A kind of cell pressure maintaining tray and pressure maintaining bonding processing method

Abstract

The application provides an electric core pressure maintaining tray and an electric core pressure maintaining bonding processing method, which comprises a containing assembly, the containing assembly comprising a bearing table, a bottom pressure maintaining disc, a top pressure maintaining disc and side pressure maintaining discs, the bottom pressure maintaining disc, the top pressure maintaining disc and the side pressure maintaining discs being arranged around a processing space, and the bearing table, the bottom pressure maintaining disc and the side pressure maintaining discs being provided with pressure sensors; a horizontal driving assembly 200, the horizontal driving assembly 200 comprising a pushing mechanism and moving pieces, the side pressure maintaining discs being connected to the moving pieces respectively, any moving piece being connected with a first pressure adjusting piece, the moving pieces being connected to the pushing mechanism respectively and being relatively close to or away from each other through the pushing mechanism; and a top cover assembly comprising a cover plate, the top pressure maintaining disc being connected to the cover plate, and the cover plate being provided with a second pressure adjusting piece. Compared with conventional electric core processing equipment, the application has the advantages of stable processing effect, accurate and controllable pressure maintaining control and high controllability.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a cell pressure-holding tray and a pressure-holding bonding processing method. Background Technology

[0002] With the rapid development of the new energy vehicle market, market competition is becoming increasingly fierce, and consumer demand for new energy vehicles continues to rise. To seize market share, new energy vehicle manufacturers are placing higher demands on production line output. In the battery pack production process, a crucial step is bonding the battery pack to the air-cooling plate to achieve effective heat dissipation and ensure the structural stability of the battery pack. However, existing bonding processes have numerous problems during operation, seriously affecting production efficiency and product quality.

[0003] During the bonding process between the battery pack and the air-cooling plate, pressure holding is a crucial step in ensuring bonding quality. Because the battery cells typically employ a circular design, this presents operational challenges when bonding them to the air-cooling plate. The geometric characteristics of the circular cells make precise alignment difficult during bonding and they are prone to shifting during pressure holding, leading to uneven bonding. This unevenness directly affects the overall performance of the battery pack and increases the risk of module defects.

[0004] Furthermore, due to the high operational complexity, maintaining a stable pressure level during routine operation is difficult, further exacerbating the problem of module defects. Defective modules require rework or scrapping, which not only wastes raw materials but also increases equipment operating costs, thus significantly raising overall production costs. In today's increasingly competitive market environment, these issues have become significant factors restricting new energy vehicle manufacturers from increasing output and reducing costs. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem of poor bonding quality between cylindrical batteries and air-cooled plates in the prior art, and to provide a cell pressure-holding tray and a pressure-holding bonding processing method.

[0006] To solve the above-mentioned technical problems, the present invention provides a battery cell pressure holding tray, comprising: a receiving assembly, the receiving assembly including a support platform, a bottom pressure holding plate, a top pressure holding plate, and at least two side pressure holding plates, wherein a processing space is located above the support platform, the bottom pressure holding tray is connected to the support platform, and the bottom pressure holding tray, the top pressure holding tray, and at least two side pressure holding trays are arranged around the processing space, wherein pressure sensors are provided on the support platform, the bottom pressure holding plate, and at least one side pressure holding tray; a horizontal driving assembly, the horizontal driving assembly including a pushing mechanism and at least two moving parts, the at least two moving parts being arranged along a first direction on opposite sides of the processing space, the at least two side pressure holding trays being respectively connected to the at least two moving parts, a first pressure adjusting component being connected to any one of the moving parts, the at least two moving parts being respectively connected to the pushing mechanism, and being relatively close to / away from each other through the pushing mechanism; and a top cover assembly, the top cover assembly being disposed above the horizontal driving assembly, comprising a cover plate, the top pressure holding plate being connected to the cover plate, and a second pressure adjusting component being provided on the cover plate.

[0007] In one embodiment of the present invention, the pushing mechanism includes a pushing rod and a guide block. The pushing rod is externally connected to a driving device to push the guide block to move along a second direction. The guide block has two symmetrically arranged first guide slopes on both sides in a first direction. Each of the first guide slopes extends inclinedly from the surface of the guide block inward. At least two of the moving parts move in contact with the two first guide slopes to move relatively closer to / away from each other along the first direction.

[0008] In one embodiment of the present invention, the support platform is provided with a slide rail extending in a first direction, the bottom of the moving member is provided with a slide seat, and the slide seat is provided with a first roller on the side facing the guide block, the first roller rolling along the first guide slope.

[0009] In one embodiment of the present invention, the horizontal drive assembly further includes at least two fixed plates and at least two reset members. In a first direction, at least two of the fixed plates are correspondingly disposed on the outside of at least two of the moving members and are respectively connected to the support platform. At least two of the first pressure adjusting members are respectively connected to at least two of the fixed plates, and at least two of the reset members are respectively disposed between the fixed plates and the moving members on the same side.

[0010] In one embodiment of the present invention, the fixing plate is provided with a connecting groove, and the top cover assembly further includes at least two plug-in members, which are respectively inserted into and connected to at least two connecting grooves.

[0011] In one embodiment of the present invention, the connector includes a plug portion, a latch, an unlocking wheel, and a pin. The plug portion is disposed in the connecting groove, the latch is disposed at the top of the plug portion and connected to the cover plate, the unlocking wheel is connected to the latch and is used in conjunction with an external mobile device to lock / unlock the latch, the plug portion is provided with a limiting groove, and the pin passes through the fixing plate and the limiting groove.

[0012] In one embodiment of the present invention, the top cover assembly further includes at least two centering components, the at least two centering components being respectively connected to the lower surface of the cover plate, and the at least two centering components abutting against each other in a first direction with at least two of the moving members.

[0013] In one embodiment of the present invention, the top of the movable member is provided with a second guide slope, and the centering component includes a limiting plate and a second roller. One end of the limiting plate is connected to the cover plate, and the other end is connected to the second roller. The second roller on the same side moves along the second guide slope to adjust the position of the movable member in a first direction.

[0014] This invention also provides a cell pressure-holding bonding process, which uses the aforementioned cell pressure-holding tray to perform pressure-holding bonding of cylindrical cells and air-cooling plates. Specifically, it includes: S1, placing the bottom cell on the bottom pressure-holding tray, then stacking the air-cooling plate coated with adhesive and the next bottom cell on top of the bottom cell, so that the next bottom cell is located in the side pressure-holding tray; then stacking the top cell coated with adhesive on the air-cooling plate and the next bottom cell, and placing it in the top pressure-holding tray; S2, using a pushing mechanism to bring the moving parts closer together to contact and fix the cell and air-cooling plate in the horizontal direction, while simultaneously moving the top cover towards the support platform to contact and fix the cell and air-cooling plate in the vertical direction; S3, detecting and adjusting the pressure of the bottom pressure-holding tray, the side pressure-holding tray, and the top pressure-holding tray to a preset pressure, and holding the pressure for a preset time to complete the pressure-holding connection between the cylindrical cell and the air-cooling plate; S4, after depressurizing and resetting each component, removing the finished product, and waiting for the next pressure-holding process.

[0015] In one embodiment of the present invention, in step S2, the moving part is driven by a pusher motor installed on the production line to move the pusher rod and the guide block along the second direction. The moving part gradually moves closer to / away from the guide slope of the guide block to squeeze / release the battery cell. After the moving part is positioned, the top cover is supported above the moving part by an external moving device.

[0016] In one embodiment of the present invention, in step S3, the pressure of the moving member in the horizontal direction is adjusted by the first pressure adjusting member, and the pressure of the top cover assembly in the vertical direction is adjusted by the second pressure adjusting member, thereby making the pressure of the bottom pressure plate, the side pressure plate and the top pressure plate reach the preset pressure.

[0017] The technical solution of the present invention has the following advantages over the prior art:

[0018] The cell pressure-holding tray and pressure-holding bonding processing method described in this invention perform pressure-holding processing on the battery to be processed and the air-cooling plate through a bottom pressure-holding plate, a top pressure-holding plate, and at least two side pressure-holding plates in the housing assembly. A horizontal drive assembly drives and adjusts the side pressure-holding plates to achieve pressure-holding processing in the horizontal direction, while a top cover assembly drives the top pressure-holding plate to achieve pressure-holding processing in the vertical direction. Furthermore, the internal pressure sensor provides real-time feedback, thereby ensuring that the internal pressure of the housing assembly remains stable, thus achieving a stable pressure-holding processing effect. Compared to conventional cell processing equipment, this application has advantages such as stable processing results, precise pressure-holding control, and high controllability. Attached Figure Description

[0019] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the cell pressure-holding tray in a preferred embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A three-dimensional structural diagram of the housing components and horizontal drive components in the cell pressure holding tray shown.

[0022] Figure 3 yes Figure 2 Top view of the accommodating component and the horizontal drive component shown;

[0023] Figure 4 yes Figure 1 The diagram shows a three-dimensional structure of the top cover assembly in the cell pressure holding tray.

[0024] Explanation of reference numerals in the accompanying drawings: 100, receiving assembly; 110, bottom pressure plate; 120, side pressure plate; 130, top pressure plate; 140, support platform; 141, handle; 142, slide rail; 200, horizontal drive assembly; 210, jacking mechanism; 211, jacking rod; 212, guide block; 220, fixing plate; 221, connecting groove; 222, first pressure adjusting element; 230, moving element; 231, connection. Frame; 232, Second guide ramp; 233, Slide; 234, First roller; 240, Reset component; 300, Top cover assembly; 310, Cover plate; 311, Second pressure adjusting component; 320, Connector; 321, Connecting part; 322, Lock; 323, Unlocking wheel; 324, Pin; 330, Centering component; 331, Limiting plate; 332, Second roller; X, First direction; Y, Second direction; Z, Height direction. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0026] Example 1

[0027] See Figure 1 As shown, this embodiment provides a cell pressure holding tray, which includes: a receiving assembly 100, the receiving assembly 100 including a support platform 140, a bottom pressure holding plate 110, a top pressure holding plate 130 and at least two side pressure holding plates 120, the support platform 140 having a processing space above it, the bottom pressure holding tray being connected to the support platform 140, and the bottom pressure holding tray, the top pressure holding tray and at least two side pressure holding trays being arranged around the processing space, wherein pressure sensors are provided on the support platform 140, the bottom pressure holding plate 110 and at least one side pressure holding tray; and a horizontal drive assembly 200, the horizontal drive assembly 200 including a pushing mechanism 210 and at least Two movable parts 230, at least two of the movable parts 230 are arranged on opposite sides of the processing space along the first direction X, at least two of the side pressure holding trays are respectively connected to at least two of the movable parts 230, a first pressure adjusting member 222 is connected to any one of the movable parts 230, at least two of the movable parts 230 are respectively connected to the push mechanism 210, and are relatively close to / away from each other through the push mechanism 210; a top cover assembly 300, the top cover assembly 300 is arranged above the horizontal drive assembly 200, it includes a cover plate 310, the top pressure holding plate 130 is connected to the cover plate 310, and the cover plate 310 is provided with a second pressure adjusting member 311.

[0028] It is worth noting that, for ease of description, in this embodiment, the length direction of the cell pressure holding tray is defined as the first direction X, the width direction of the cell pressure holding tray is defined as the second direction Y, and the height direction Z of the cell pressure holding tray is defined as the height direction Z. The first direction X, the second direction Y, and the height direction Z are arranged perpendicularly to each other, and the first direction X and the second direction Y are located in the same plane.

[0029] In this embodiment, the cell pressure-holding tray is transported via the production line and is used for pressure-holding and bonding processing of cylindrical batteries and air-cooling plates. Specifically, in this embodiment, multiple cylindrical batteries are arranged around the air-cooling plate, and the processing space is matched to the product shape. Specifically, in this embodiment, the product is divided into three layers in the height direction Z. The bottom layer consists of five mutually bonded cylindrical batteries. The center of the bottom layer is the air-cooling plate, with a cylindrical battery at each end. The top layer consists of five mutually bonded cylindrical batteries arranged in the same way as the bottom layer. Therefore, in this embodiment, the top pressure-holding plate 130 and the bottom pressure-holding plate 110 are each provided with five contoured grooves, and each of the two side pressure-holding plates 120 of the second bottom layer is provided with a contoured groove.

[0030] See Figure 1 and Figure 2 As shown, the processing space in this application is located at the center of the support platform 140. A handle 141 is also provided on the support platform 140 to facilitate the overall handling and movement of the pallet. Further, a pushing mechanism 210 is connected to the support platform 140 and cooperates with the pushing motor on the production line. Specifically, the pushing mechanism 210 includes a pushing rod 211 and a guide block 212. The pushing rod 211 is externally connected to a driving device to push the guide block 212 to move along the second direction Y. The guide block 212 has two symmetrically arranged first guide slopes on both sides in the first direction X. Each first guide slope extends inclinedly inward from the surface of the guide block 212. At least two moving parts 230 respectively move against the two first guide slopes to move relatively closer / away along the first direction X. Based on this, this application can be highly matched with the pushing motor of the production line, not only reducing the space required for power source layout but also enabling the simultaneous movement of two moving parts 230 with only one drive.

[0031] Furthermore, the support platform 140 is provided with a slide rail 142 extending along the first direction X, and the bottom of the moving member 230 is provided with a slide seat 233. The slide seat 233 is provided with a first roller 234 on the side facing the guide block 212. The first roller 234 rolls along the first guide slope, thereby reducing the moving friction between the guide block 212 and the moving member 230, making their adjustment process more flexible and precise. Furthermore, the horizontal drive assembly 200 also includes at least two fixed plates 220 and at least two reset members 240. In the first direction X, at least two of the fixed plates 220 are correspondingly disposed on the outside of at least two of the moving members 230 and are respectively connected to the support platform 140. At least two of the first pressure adjusting members 222 are respectively connected to at least two of the fixed plates 220, and at least two reset members 240 are respectively disposed between the fixed plates 220 and the moving members 230 on the same side. In this embodiment, when the moving parts 230 are in their normal state, their spacing is smaller than that of the element to be processed. When the element to be processed enters the processing space, the two moving parts 230 move away from each other, thereby causing the reset part 240 to be in a compressed state, so as to provide extrusion force to the corresponding side pressure plate 120. In this embodiment, the reset part 240 is preferably a spring. In other embodiments, it can also be set as an element with elastic potential energy such as elastic rubber. The present invention does not make specific limitations on this. In this embodiment, the reset part 240 can be adjusted by adjusting the first pressure adjusting part 222, thereby realizing the control of the lateral pressure.

[0032] See Figures 1 to 4 As shown, the fixing plate 220 is provided with a connecting groove 221, and the top cover assembly 300 also includes at least two plug-in members 320. The at least two plug-in members 320 are respectively inserted and connected to the at least two connecting grooves 221. Further, the plug-in member 320 includes a plug-in part 321, a latch 322, an unlocking wheel 323, and a pin 324. The plug-in part 321 is disposed in the connecting groove 221. The latch 322 is disposed at the top of the plug-in part 321 and is connected to the cover plate 310. The unlocking wheel 323 is connected to the latch 322 and is used in conjunction with an external mobile device to lock / unlock the latch 322. The plug-in part 321 is provided with a limiting groove, and the pin 324 passes through the fixing plate 220 and the limiting groove. The unlocking wheel 323 can cooperate with external devices to lock / unlock the connector 320, thereby improving the automation level of this application. However, in the event of a device failure, it can also be manually adjusted via the pin 324.

[0033] See Figure 3 and Figure 4As shown, to ensure that the two side pressure plates 120 exert the same pressure on the component to be processed and to avoid product quality deviations, this application further includes at least two centering components 330. These at least two centering components 330 are respectively connected to the lower surface of the cover plate 310, and at least two centering components 330 abut against each other in the first direction X. Specifically, the top of the moving component 230 is provided with a second guide slope 232. The centering component 330 includes a limiting plate 331 and a second roller 332. One end of the limiting plate 331 is connected to the cover plate 310, and the other end is connected to the second roller 332. The second roller 332 on the same side moves along the second guide slope 232 to adjust the position of the moving component 230 in the first direction X. Specifically, in this embodiment, the side pressure plates 120 are fixed to the moving component 230 via a connecting frame 231.

[0034] Example 2

[0035] This embodiment provides a cell pressure-holding bonding process, which uses the cell pressure-holding tray described in one embodiment to perform pressure-holding bonding of cylindrical cells to air-cooled plates, specifically including:

[0036] S1. After placing the bottom battery cell on the bottom pressure plate 110, stack the air-cooling plate coated with glue and the second bottom battery cell on the bottom battery cell, so that the second bottom battery cell is located in the side pressure plate 120. Then, stack the top battery cell coated with glue on the air-cooling plate and the second bottom battery cell, and place it in the top pressure plate 130.

[0037] S2. The moving parts 230 are brought closer together by the push mechanism 210 to contact the fixed battery cell and the air-cooling plate in the horizontal direction, while the top cover moves toward the support platform 140 to contact the fixed battery cell and the air-cooling plate in the height direction Z. Specifically, the moving parts 230 are driven by the push motor on the production line to move the push rod 211 and the guide block 212 along the second direction Y. The moving parts 230 gradually move closer to / away from the guide slope of the guide block 212 to squeeze / release the battery cell. After the moving parts 230 are positioned, the top cover is supported above the moving parts 230 by an external moving device.

[0038] S3. Detect and adjust the extrusion pressure of the bottom pressure plate 110, the side pressure plate 120 and the top pressure plate 130 to the preset pressure, and maintain the pressure for a preset time to complete the pressure-maintaining connection between the cylindrical battery cell and the air-cooling plate.

[0039] S4. After depressurizing and resetting each component, remove the finished product and wait for the next pressure holding process. Specifically, in this embodiment, the pressure of the moving part 230 in the horizontal direction is adjusted by the first pressure adjusting component 222, and the pressure of the top cover assembly 300 in the height direction Z is adjusted by the second pressure adjusting component 311, thereby making the pressure of the bottom pressure holding plate 110, the side pressure holding plate 120 and the top pressure holding plate 130 reach the preset pressure.

[0040] In summary, the cell pressure-holding tray and pressure-holding bonding processing method of the present invention perform pressure-holding processing on the battery and air-cooling plate to be processed through the bottom pressure-holding plate 110, the top pressure-holding plate 130, and at least two side pressure-holding plates 120 in the housing assembly 100. The horizontal drive assembly 200 drives and adjusts the side pressure-holding plates 120 to achieve pressure-holding processing in the horizontal direction, and the top cover assembly 300 drives the top pressure-holding plate 130 to achieve pressure-holding processing in the height direction Z. Furthermore, the internal pressure sensor of this application can provide real-time feedback, thereby ensuring that the internal pressure of the housing assembly 100 remains stable, thus achieving a stable pressure-holding processing effect. Compared with conventional cell processing equipment, this application has the advantages of stable processing effect, precise pressure-holding control, and high controllability.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A cell pressure-holding tray, characterized in that: include: A receiving assembly includes a support platform, a bottom pressure holding plate, a top pressure holding plate, and at least two side pressure holding plates. Above the support platform is a processing space. The bottom pressure holding plate is connected to the support platform and is arranged around the processing space along with the top pressure holding plate and at least two side pressure holding plates. Pressure sensors are provided on the support platform, the bottom pressure holding plate, and at least one of the side pressure holding plates. A horizontal drive assembly includes a push mechanism and at least two moving parts. The at least two moving parts are arranged on opposite sides of the processing space along a first direction. At least two side pressure holding trays are respectively connected to the at least two moving parts. A first pressure regulating element is connected to any of the moving parts. The at least two moving parts are respectively connected to the push mechanism and are relatively close to / away from each other through the push mechanism. A top cover assembly is disposed above the horizontal drive assembly, and includes a cover plate, a top pressure holding plate is connected to the cover plate, and the cover plate is provided with a second pressure regulating element.

2. The cell pressure-holding tray according to claim 1, characterized in that: The pushing mechanism includes a pushing rod and a guide block. The pushing rod is externally connected to a driving device to push the guide block to move along a second direction. The guide block has two symmetrically arranged first guide slopes on both sides in a first direction. Each of the first guide slopes extends inclinedly from the surface of the guide block inward. At least two of the moving parts move in contact with the two first guide slopes to move relatively closer to / away from each other along the first direction.

3. The cell pressure-holding tray according to claim 2, characterized in that: The support platform is provided with a slide rail extending in a first direction, the bottom of the moving part is provided with a slide seat, and the slide seat is provided with a first roller on the side facing the guide block, and the first roller rolls along the first guide slope.

4. The cell pressure-holding tray according to claim 2, characterized in that: The horizontal drive assembly further includes at least two fixed plates and at least two reset members. In the first direction, at least two of the fixed plates are correspondingly disposed on the outside of at least two of the moving members and are respectively connected to the support platform. At least two of the first pressure adjusting members are respectively connected to at least two of the fixed plates. At least two of the reset members are respectively disposed between the fixed plates and the moving members on the same side.

5. The cell pressure-holding tray according to claim 4, characterized in that: The fixing plate is provided with a connecting groove, and the top cover assembly further includes at least two plug-in members, which are respectively inserted into and connected to at least two connecting grooves.

6. The cell pressure-holding tray according to claim 5, characterized in that: The connector includes a plug part, a latch, an unlocking wheel, and a pin. The plug part is disposed in the connecting groove. The latch is disposed at the top of the plug part and connected to the cover plate. The unlocking wheel is connected to the latch and is used in conjunction with an external mobile device to lock / unlock the latch. The plug part is provided with a limiting groove, and the pin passes through the fixing plate and the limiting groove.

7. The cell pressure-holding tray according to claim 1, characterized in that: The top cover assembly further includes at least two centering components, which are respectively connected to the lower surface of the cover plate, and the at least two centering components abut against each other in a first direction with at least two of the moving members.

8. The cell pressure-holding tray according to claim 7, characterized in that: The top of the movable component is provided with a second guide slope. The centering component includes a limiting plate and a second roller. One end of the limiting plate is connected to the cover plate, and the other end is connected to the second roller. The second roller on the same side moves along the second guide slope to adjust the position of the movable component in the first direction.

9. A method for bonding and maintaining the voltage of battery cells, characterized in that: The pressure-holding bonding process between cylindrical battery cells and air-cooled plates using the battery cell pressure-holding tray described in any one of claims 1 to 8 specifically includes: S1. After placing the bottom layer battery cell on the bottom pressure plate, stack the air-cooling plate coated with glue and the second bottom layer battery cell on the bottom layer battery cell, so that the second bottom layer battery cell is located in the side pressure plate. Then, stack the top layer battery cell coated with glue on the air-cooling plate and the second bottom layer battery cell, and place it in the top pressure plate. S2. The moving parts are brought closer together by the pushing mechanism to contact the fixed battery cell and air-cooling plate in the horizontal direction, while the top cover is moved toward the support platform to contact the fixed battery cell and air-cooling plate in the vertical direction. S3. Detect and adjust the extrusion pressure of the bottom pressure plate, side pressure plate and top pressure plate to the preset pressure, and maintain the pressure for a preset time to complete the pressure-maintaining connection between the cylindrical cell and the air-cooling plate; S4. After depressurizing and resetting each component, remove the finished product and wait for the next pressure holding process.

10. The cell pressure-maintaining bonding processing method according to claim 9, characterized in that: In step S2, the moving part is driven by the pusher motor installed on the production line to move the pusher rod and guide block along the second direction. The moving part gradually moves closer to / away from the guide slope of the guide block to squeeze / release the battery cell. After the moving part is positioned, the top cover is supported above the moving part by an external moving device.

11. The cell pressure-maintaining bonding processing method according to claim 9, characterized in that: In step S3, the pressure of the moving part in the horizontal direction is adjusted by the first pressure adjusting component, and the pressure of the top cover assembly in the vertical direction is adjusted by the second pressure adjusting component, thereby making the pressure of the bottom pressure plate, the side pressure plate and the top pressure plate reach the preset pressure.

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