Battery assembling equipment

Abstract

The utility model provides battery assembly equipment and relates to the technical field of secondary batteries. The battery assembly equipment comprises a stacking device and a protection tool, the stacking device comprises a stacking platform and an extrusion mechanism, the stacking platform comprises a supporting part and a side blocking part which are perpendicular to each other, the supporting part is provided with a supporting face, the side blocking part is connected to one side of the supporting part, the extrusion mechanism comprises a first driving part and an extrusion platform, and the first driving part is arranged at the end, away from the supporting part, of the side blocking part; the driving end of the first driving piece is connected with the extrusion platform so as to drive the extrusion platform to move towards the supporting face. And sequentially stacking the components forming the battery inner core on the supporting surface to form the battery inner core. The first driving part drives the extrusion platform to move towards the supporting face, and the battery inner core is extruded to reach the thickness required by the technology. And then placing the battery inner core into the protection tool. When the battery is assembled, all parts forming the inner core of the battery only need to be stacked together in order, so that the lamination difficulty is reduced, and the assembly process is simpler.

Description

Technical Field

[0001] This utility model relates to the field of secondary battery technology, and in particular to a battery assembly device. Background Technology

[0002] High-capacity batteries have high volumetric energy density and require fewer structural and PACK components, significantly reducing system integration costs. However, existing high-capacity batteries have large electrode sizes and a large number of electrodes, making stacking and assembly difficult. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a battery assembly device.

[0004] This utility model provides the following technical solution:

[0005] A battery assembly apparatus is used to assemble single-cell batteries. The single-cell battery includes a casing, a battery core, a busbar assembly, and a cover plate assembly. The battery core is disposed inside the casing. The cover plate assembly is connected to the casing and connected to the battery core through the busbar assembly. The battery assembly apparatus includes a stacking device and protective tooling.

[0006] The stacking device is used to stack and form a battery core, and includes a stacking platform and an extrusion mechanism. The stacking platform includes a support portion and a side baffle portion that are perpendicular to each other. The support portion has a support surface, and the side baffle portion is connected to one side of the support portion. The extrusion mechanism includes a first driving member and an extrusion platform. The first driving member is disposed at the end of the side baffle portion away from the support portion, and the driving end of the first driving member is connected to the extrusion platform to drive the extrusion platform to move toward the support surface.

[0007] The protective fixture is used to protect the battery core during the installation of the bus assembly and the cover assembly.

[0008] As a further optional feature of the battery assembly equipment, the stacking platform is provided with tape clearance grooves.

[0009] As a further optional feature of the battery assembly equipment, positioning bosses are provided at both ends of the stacking platform.

[0010] As a further optional embodiment of the battery assembly equipment, the stacking device also includes a base and a tilting mechanism;

[0011] The stacking platform is rotatably mounted on the base;

[0012] The tilting mechanism is disposed on the base and connected to the stacking platform. The tilting mechanism is used to drive the stacking platform to tilt when stacking the battery cores, so that the side of the support near the side block tilts downward.

[0013] As a further optional embodiment of the battery assembly equipment, the protective fixture includes a first fixture and a second fixture, the first fixture and the second fixture surrounding the battery core circumferentially.

[0014] As a further optional solution for the battery assembly equipment, the inner wall of the first tooling is provided with a robotic gripper clearance groove.

[0015] As a further optional solution for the battery assembly equipment, the inner walls of the first tooling are respectively provided with first positioning protrusions at both ends, and the inner walls of the second tooling are respectively provided with second positioning protrusions at both ends.

[0016] As a further optional solution for the battery assembly equipment, at least one end of the second tooling is provided with a tab combing clearance groove.

[0017] As a further optional solution for the battery assembly equipment, at least one end of the first tooling is provided with a first welding clearance groove, and the second tooling is provided with a second welding clearance groove corresponding to the first welding clearance groove.

[0018] As a further optional solution for the battery assembly equipment, the first tooling is provided with a positioning female buckle, and the second tooling is provided with a positioning male buckle that engages with the positioning female buckle.

[0019] The embodiments of this utility model have the following beneficial effects:

[0020] When assembling individual cells using the aforementioned battery assembly equipment, the components constituting the battery core are first stacked sequentially on a support surface to form the battery core. After stacking, a first drive unit moves the extrusion platform toward the support surface, extruding the battery core to the required thickness. The battery core is then placed into a protective fixture. During this process, workers only need to neatly and orderly stack the components constituting the battery core, reducing the difficulty of stacking and simplifying the assembly process. Furthermore, the protective fixture protects the battery core during the installation of busbar assemblies and cover assemblies.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the internal structure of a single-cell battery is shown.

[0024] Figure 2 A schematic diagram of an explosion of a single cell battery is shown;

[0025] Figure 3 A schematic diagram of the structure of the battery core in a single-cell battery is shown;

[0026] Figure 4 This diagram illustrates the structure of a stacking device in a battery assembly apparatus according to an embodiment of the present invention.

[0027] Figure 5 This diagram illustrates the structure of a protective tooling in a battery assembly device according to an embodiment of the present invention.

[0028] Figure 6 A schematic diagram of a busbar assembly in a single-cell battery is shown.

[0029] Explanation of key component symbols:

[0030] 100-Stacking device; 110-Stacking platform; 111-Support part; 1111-Support surface; 112-Side baffle; 1121-Cylinder fixing seat; 113-Tape clearance groove; 114-Positioning boss; 120-Extrusion mechanism; 121-First driving component; 122-Extrusion platform; 130-Base; 131-Support; 140-Tilting mechanism; 141-Fixing rod; 142-Second driving component; 143-Connecting rod; 200-Protective fixture; 210-First fixture; 211-Positioning female buckle; 212-Robot arm claw clearance groove; 213-First positioning protrusion; 214-First welding clearance groove; 220-Second fixture; 221-Positioning male buckle; 222-Second positioning protrusion; 223-Electrode combing clearance groove; 224-Second welding clearance groove;

[0031] 10-Outer shell; 11-First shell; 12-Second shell; 20-Battery core; 21-Battery electrode assembly; 21a-Electrical tab; 22-Flexible porous component; 22a-First flexible porous component; 22b-Second flexible porous component; 23-Insulating and heat-conducting component; 24-Fixed support plate; 30-Bus assembly; 31-Positioning groove; 40-Cover plate assembly; 50-Mylar membrane; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0037] Example

[0038] This embodiment provides a battery assembly device for assembling individual battery cells.

[0039] Please refer to the following: Figure 1 and Figure 2 The single cell has a first direction X, a second direction Y and a third direction Z that are perpendicular to each other, and the single cell includes a casing 10, a battery core 20, a bus assembly 30, a cover assembly 40 and a Mylar membrane 50.

[0040] The outer casing 10 has a receiving cavity with openings at both ends along the first direction X. Correspondingly, the battery core 20 is disposed within the receiving cavity.

[0041] Busbar assembly 30 is disposed at the opening and is connected to battery core 20. At the same time, cover plate assembly 40 is disposed at the opening and is connected to housing 10 and busbar assembly 30 respectively, and is connected to battery core 20 through busbar assembly 30.

[0042] In addition, the Mylar membrane 50 extends along the first direction X, has a main body portion perpendicular to the third direction Z and a flange perpendicular to the second direction Y, and there are two Mylar membranes 50.

[0043] During assembly, the main body of the Mylar membrane 50 is heat-fused to the busbar assembly 30 at its end along the first direction X, and the flange of the Mylar membrane 50 is heat-fused to the battery core 20 and the busbar assembly 30.

[0044] Please see Figure 3 The battery core 20 is formed by stacking battery electrode group 21, flexible porous component 22, insulating and heat-conducting component 23 and fixed support plate 24 along the second direction Y.

[0045] The battery electrode group 21 is provided in multiple ways, and the battery electrode groups 21 are arranged in pairs, with the two battery electrode groups 21 of the same pair stacked together. The end of the battery electrode group 21 facing the opening along the first direction X is provided with a tab 21a. The tabs 21a of the two battery electrode groups 21 of the same pair are combined and connected to the busbar assembly 30.

[0046] Meanwhile, the fixed support plates 24 are arranged in pairs, with the two fixed support plates 24 located at the ends of the battery core 20 along the second direction Y.

[0047] Accordingly, the flexible porous component 22 includes a first flexible porous component 22a and a second flexible porous component 22b. The thickness of the first flexible porous component 22a is less than the thickness of the second flexible porous component 22b, and the first flexible porous component 22a is disposed between the fixed support plate 24 and the battery electrode group 21, while the second flexible porous component 22b is disposed between two adjacent battery electrode groups 21.

[0048] In addition, the insulating heat-conducting element 23 is disposed between the flexible porous element 22 and the battery electrode assembly 21.

[0049] Please refer to the following: Figure 4 and Figure 5 The battery assembly equipment includes a stacking device 100 and a protective fixture 200. The stacking device 100 is used to stack and form the battery core 20, and the protective fixture 200 is used to protect the battery core 20 when installing the busbar assembly 30 and the cover assembly 40.

[0050] Please see Figure 4 The stacking device 100 includes a stacking platform 110 and a pressing mechanism 120.

[0051] The stacking platform 110 includes a support portion 111 and a side stop portion 112 that are perpendicular to each other. The support portion 111 has a support surface 1111 perpendicular to the second direction Y, and the side stop portion 112 is connected to one side of the support portion 111.

[0052] In addition, the extrusion mechanism 120 includes a first drive member 121 and an extrusion platform 122. The first drive member 121 is disposed at one end of the side stop 112 away from the support 111, and the drive end of the first drive member 121 is connected to the extrusion platform 122 to drive the extrusion platform 122 to move toward the support surface 1111 along the second direction Y.

[0053] When assembling a single battery cell using the aforementioned battery assembly equipment, the battery electrode assembly 21, flexible porous component 22, insulating and heat-conducting component 23, and fixed support plate 24 are first stacked sequentially on the support surface 1111 to form the battery core 20. During the stacking process, the sides of the battery electrode assembly 21, flexible porous component 22, insulating and heat-conducting component 23, and fixed support plate 24 are all in contact with and aligned with the side baffle 112. After stacking is completed, the first driving component 121 drives the extrusion platform 122 to move along the second direction Y toward the support surface 1111, extruding the battery core 20 to the required thickness, and then placing the battery core 20 into the protective fixture 200. In this process, the operator only needs to stack the various components constituting the battery core 20 neatly and orderly, reducing the difficulty of stacking and simplifying the assembly process.

[0054] In addition, welding operations are performed during the installation of the busbar assembly 30 and the cover plate assembly 40. The protective fixture 200 wraps the battery core 20, which can prevent the battery core 20 from being contaminated during the production process, protect the battery core 20, and facilitate the transfer of the battery core 20 during the production process.

[0055] Optionally, the first driving component 121 is a cylinder. A cylinder mounting base 1121 is provided at the end of the side stop 112 away from the support 111, the cylinder body is mounted on the cylinder mounting base 1121, and the piston rod of the cylinder is connected to the extrusion platform 122.

[0056] Furthermore, the stacking platform 110 is provided with a tape clearance groove 113.

[0057] After the battery core 20 is compressed to the required thickness, the assembly personnel can use tape to bind the battery core 20 at the tape clearance groove 113 to keep the battery core 20 in a compressed state so that the battery core 20 can be transferred to the next process.

[0058] For example, three tape clearance slots 113 are provided, and the three tape clearance slots 113 are arranged along the first direction X, dividing the stacking platform 110 into four parts. Each part includes a support portion 111 and a side stop portion 112 that are perpendicular to each other and are arranged in an L-shape.

[0059] Furthermore, the stacking platform 110 is provided with positioning bosses 114 at both ends along the first direction X.

[0060] When the battery electrode group 21 and the flexible porous component 22 are stacked on the support surface 1111, the positioning boss 114 can position the battery electrode group 21 and the flexible porous component 22 along the first direction X, so that each battery electrode group 21 and each flexible porous component 22 are aligned along the first direction X.

[0061] Optionally, the positioning boss 114 is provided with a certain draft angle, which can guide the battery electrode assembly 21 and the flexible porous component 22 during the stacking process.

[0062] In some embodiments, the stacking device 100 further includes a base 130 and a tilting mechanism 140.

[0063] The stacking platform 110 is rotatably mounted on the base 130 around the first direction X.

[0064] A tilting mechanism 140 is disposed on the base 130 and is connected to the stacking platform 110. The tilting mechanism 140 is used to drive the stacking platform 110 to tilt when stacking the battery cores 20, so that the side of the support 111 near the side stop 112 tilts downward.

[0065] When stacking the battery cores 20, the tilting mechanism 140 drives the stacking platform 110 to tilt, causing the side of the support 111 near the side baffle 112 to tilt downwards. This allows the battery electrode assembly 21 and the flexible porous component 22 stacked on the support 111 to adhere to the side baffle 112 under their own gravity, thus better aligning the battery electrode assembly 21 and the flexible porous component 22 using the side baffle 112. After stacking is complete, the tilting mechanism 140 drives the stacking platform 110 back to its normal position so that the battery cores 20 can be removed.

[0066] For example, a support 131 is provided on the base 130, and the stacking platform 110 is hinged to the support 131 via a hinge. Since the stacking platform 110 is divided into four parts by three tape clearance grooves 113, four sets of supports 131 and hinges are provided accordingly.

[0067] In this embodiment, the tilting mechanism 140 consists of a fixed rod 141, a second driving member 142, and a connecting rod 143.

[0068] The fixing rod 141 is disposed on the base 130 along the first direction X. The second driving member 142 is hinged to the fixing rod 141, and the driving end of the second driving member 142 is hinged to the connecting rod 143, which is connected to the stacking platform 110.

[0069] In use, the drive end of the second drive unit 142 drives the stacking platform 110 to rotate around the support 131.

[0070] Optionally, the second driving component 142 is a hydraulic cylinder, with its cylinder body hinged to the fixed rod 141 and its piston rod as the driving end hinged to the connecting rod 143.

[0071] Optionally, two sets of second drive members 142 and connecting rods 143 are provided, with each second drive member 142 driving two components of the stacking platform 110 via the connecting rods 143.

[0072] Please see Figure 5 Specifically, the protective fixture 200 includes a first fixture 210 and a second fixture 220, both of which extend along the first direction X.

[0073] During assembly, the bundled battery core 20 is transferred to the first fixture 210, and then the second fixture 220 is fastened on, so that the battery core 20 can be conveniently and quickly placed into the protective fixture 200. Then the entire protective fixture 200 together with the battery core 20 is transferred to the next process.

[0074] Please refer to the following: Figure 2Specifically, the outer casing 10 includes a first casing 11 and a second casing 12 that are interconnected. Both the first casing 11 and the second casing 12 extend along a first direction X, and the first casing 11 and the second casing 12 together form a receiving cavity.

[0075] The outer casing 10 is split into a first casing 11 and a second casing 12, which not only facilitates the insertion of the stacked battery core 20 into the casing, but also allows for the application of pre-tightening force to the battery electrode assembly 21 by extrusion before welding the busbar assembly 30 and the cover assembly 40, thereby improving battery performance.

[0076] Furthermore, both the first housing 11 and the second housing 12 are L-shaped and each has a large surface perpendicular to the third direction Z and a small surface perpendicular to the second direction Y.

[0077] Understandably, the protective fixture 200 is divided into a first fixture 210 and a second fixture 220, with the shape of the first fixture 210 adapted to the shape of the second housing 12, and the shape of the second fixture 220 adapted to the shape of the first housing 11. Both fixtures have a large surface perpendicular to the third direction Z and a small surface perpendicular to the second direction Y. After the busbar assembly 30 and the cover assembly 40 are installed, the second fixture 220 is positioned upwards, and then the second fixture 220 is removed, allowing the first housing 11 to be installed in the original position of the second fixture 220. Subsequently, the battery core 20, along with the first fixture 210 and the first housing 11, is rotated by 10°, and the first fixture 210 is removed, allowing the second housing 12 to be installed in the original position of the first fixture 210.

[0078] Therefore, the protective fixture 200 can match the design of the outer casing 10, which is beneficial for the insertion of the battery core 20 into the casing.

[0079] In this embodiment, the first tooling 210 is provided with a positioning female buckle 211, and the second tooling 220 is provided with a positioning male buckle 221 that engages with the positioning female buckle 211.

[0080] The positioning buckle 211 engages with the positioning female buckle 211, enabling the first tooling 210 and the second tooling 220 to precisely cooperate and protect the battery core 20 inside.

[0081] Furthermore, the inner wall of the first tooling 210 is provided with a robotic arm gripper clearance groove 212.

[0082] In use, the robotic gripper transfers the bundled battery core 20 to the first fixture 210. The robotic gripper moves into the robotic gripper clearance groove 212, without contacting the inner wall of the first fixture 210, and places the battery core 20 on the inner wall of the first fixture 210.

[0083] For example, the large surface of the first tooling 210 is placed horizontally, and the robotic gripper clearance groove 212 is provided on the large surface of the first tooling 210. In addition, the width of the robotic gripper clearance groove 212 is greater than the width of the robotic gripper, and the depth of the robotic gripper clearance groove 212 is greater than the thickness of the robotic gripper.

[0084] Furthermore, the inner wall of the first tooling 210 is provided with a first positioning protrusion 213 at both ends along the first direction X, and the inner wall of the second tooling 220 is provided with a second positioning protrusion 222 at both ends along the first direction X.

[0085] When the first tooling 210 and the second tooling 220 are fastened together to wrap the battery core 20, the first positioning protrusion 213 and the second positioning protrusion 222 can position the battery core 20 along the first direction X.

[0086] Optionally, the distance between the first positioning protrusions 213 at both ends of the first tooling 210 along the first direction X is slightly greater than the length of the battery core 20 along the first direction X, and the distance between the second positioning protrusions 222 at both ends of the second tooling 220 along the first direction X is also slightly greater than the length of the battery core 20 along the first direction X.

[0087] In this embodiment, the first tooling 210 has a plurality of first positioning protrusions 213 at both ends, and the plurality of first positioning protrusions 213 are distributed along the second direction Y. The second tooling 220 has a plurality of second positioning protrusions 222 at both ends, and the plurality of second positioning protrusions 222 are distributed along the second direction Y.

[0088] Meanwhile, a positioning groove 31 is provided on the side of the bus assembly 30 facing the battery core 20 along the first direction X (see reference). Figure 6 The positioning grooves 31 are provided in two sets, and the two sets of positioning grooves 31 are respectively located on the two sides of the surface along the third direction Z. The positioning grooves 31 in the same set are distributed along the second direction Y, and the distance between two adjacent positioning grooves 31 is equal to the distance between two adjacent first positioning protrusions 213 along the second direction Y, and also equal to the distance between two adjacent second positioning protrusions 222 along the second direction Y.

[0089] When the busbar assembly 30 is installed from the openings at both ends of the protective fixture 200 along the first direction X, the positioning grooves 31 on the busbar assembly 30 abut against the corresponding first positioning protrusions 213 and second positioning protrusions 222, indicating that the busbar assembly 30 is installed in place. The tabs 21a on the battery core 20 can be bent towards each other and welded to the busbar assembly 30.

[0090] Thus, the first positioning protrusion 213 and the second positioning protrusion 222 can also position the bus assembly 30 so as to accurately connect the tab 21a to the bus assembly 30.

[0091] Furthermore, the second tooling 220 is provided with a tab combing clearance groove 223 at at least one end along the first direction X.

[0092] Understandably, the second tooling 220 is positioned upwards, and the tab combing clearance groove 223 located at the end of the second tooling 220 allows the operator to comb the tabs 21a passing through the busbar assembly 30 using the tab 21a combing device, thereby facilitating the connection of the tabs 21a to the busbar assembly 30.

[0093] In this embodiment, the second tooling 220 is provided with tab combing avoidance grooves 223 at both ends along the first direction X, and the tab combing avoidance grooves 223 are provided on the large surface of the second tooling 220.

[0094] Furthermore, the first tooling 210 is provided with a first welding clearance groove 214 at at least one end along the first direction X, and the second tooling 220 is provided with a second welding clearance groove 224 corresponding to the first welding clearance groove 214.

[0095] Understandably, the first welding clearance groove 214 and the second welding clearance groove 224 are used to avoid the welding device so that the operator can use the welding device to weld the busbar assembly 30 to the cover plate assembly 40.

[0096] Specifically, the steps for assembling a single battery cell using the aforementioned battery assembly equipment are as follows:

[0097] The first step is to manufacture the battery electrode assembly 21.

[0098] The second step is to connect the two battery electrode groups 21 in parallel.

[0099] Specifically, the tabs 21a of the two battery electrode groups 21 are brought together towards the center and fixed together by ultrasonic pre-welding and adhesive bonding.

[0100] The third step is to manufacture flexible, insulating, and heat-conducting components.

[0101] Specifically, insulating and heat-conducting components 23 are attached to both sides of the first flexible porous component 22a to form a first elastic insulating and heat-conducting component. An insulating and heat-conducting component 23 is attached to one side of the second flexible porous component 22b, and a fixing support plate 24 is attached to the other side to form a second elastic insulating and heat-conducting component.

[0102] Fourth, place the second elastic insulating thermally conductive component on the stacking device 100, with one side of the fixing support plate 24 facing down. Then, alternately stack the parallel battery electrode group 21 and the first elastic insulating thermally conductive component, with the number of stacks determined according to the capacity requirements. Finally, stack the second elastic insulating thermally conductive component onto the battery electrode group 21, with one side of the insulating thermally conductive component close to the battery electrode group 21 and the other side of the fixing support plate 24 away from the battery electrode group 21. Finally, compress the stacked battery core 20 and bind the battery core 20 together using tape.

[0103] The fifth step is to transfer the bundled battery core 20 to the first fixture 210, fasten the second fixture 220, and then transfer the entire protective fixture 200 to the next process.

[0104] Step 6: Install bus assembly 30. Pass the tabs 21a through bus assembly 30, and then solder the tabs 21a to the bus assembly 30 in pairs. Clean and apply adhesive.

[0105] Step 7: Install the cover plate assembly 40 and weld the cover plate assembly 40 to the busbar assembly 30.

[0106] Step 8: After welding is completed, clean the area, lift away the second fixture 220, wrap the upper part of the battery core 20 with Mylar film 50 and heat-melt it to the fixed support plate 24 and busbar assembly 30.

[0107] In the ninth step, the first housing 11 is installed in the original position of the second tooling 220, and then the battery core 20 is sent into the flipping mechanism to be flipped 180°. The first tooling 210 is lifted away, and the lower half of the battery core 20 is wrapped with Mylar film 50 and heat-fused to the fixed support plate 24 and busbar assembly 30.

[0108] Step 10: Install the second housing 12, squeeze the first housing 11 and the second housing 12, and tack weld the first housing 11 and the second housing 12, the entire outer shell 10 and the cover plate assembly 40 into place, and finally weld and seal them with helium.

[0109] In summary, the battery assembly equipment described above can be used to assemble individual batteries simply and efficiently. It has low requirements for equipment, low defect rate, and only requires welding the tab 21a to the busbar assembly 30 and welding the busbar assembly 30 to the cover plate assembly 40 to achieve the connection between the battery electrode group 21 and the cover plate assembly 40. The operation is simple.

[0110] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0111] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0112] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A battery assembly device, characterized in that, For assembling single-cell batteries, the single-cell battery includes a casing, a battery core, a busbar assembly, and a cover plate assembly. The battery core is disposed inside the casing, the cover plate assembly is connected to the casing, and is connected to the battery core through the busbar assembly. The battery assembly equipment includes a stacking device and protective tooling. The stacking device is used to stack and form a battery core, and includes a stacking platform and an extrusion mechanism. The stacking platform includes a support portion and a side baffle portion that are perpendicular to each other. The support portion has a support surface, and the side baffle portion is connected to one side of the support portion. The extrusion mechanism includes a first driving member and an extrusion platform. The first driving member is disposed at the end of the side baffle portion away from the support portion, and the driving end of the first driving member is connected to the extrusion platform to drive the extrusion platform to move toward the support surface. The protective fixture is used to protect the battery core during the installation of the bus assembly and the cover assembly.

2. The battery assembly equipment according to claim 1, characterized in that, The stacking platform is provided with tape clearance grooves.

3. The battery assembly equipment according to claim 1, characterized in that, Positioning bosses are provided at both ends of the stacking platform.

4. The battery assembly equipment according to any one of claims 1-3, characterized in that, The stacking device also includes a base and a tilting mechanism; The stacking platform is rotatably mounted on the base; The tilting mechanism is disposed on the base and connected to the stacking platform. The tilting mechanism is used to drive the stacking platform to tilt when stacking the battery cores, so that the side of the support near the side block tilts downward.

5. The battery assembly equipment according to claim 1, characterized in that, The protective fixture includes a first fixture and a second fixture, which surround the battery core circumferentially.

6. The battery assembly equipment according to claim 5, characterized in that, The inner wall of the first tooling is provided with a robotic arm gripper clearance groove.

7. The battery assembly equipment according to claim 5, characterized in that, The first tooling has a first positioning protrusion at each end of its inner wall, and the second tooling has a second positioning protrusion at each end of its inner wall.

8. The battery assembly equipment according to claim 5, characterized in that, At least one end of the second tooling is provided with a tab combing clearance groove.

9. The battery assembly equipment according to claim 5, characterized in that, The first tooling has a first welding clearance groove at at least one end, and the second tooling has a second welding clearance groove corresponding to the first welding clearance groove.

10. The battery assembly equipment according to claim 5, characterized in that, The first fixture is provided with a positioning female buckle, and the second fixture is provided with a positioning male buckle that engages with the positioning female buckle.

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