Stacking tool and side pressing tool

Abstract

The utility model provides a stacking tool and a side pressing tool, which are suitable for a battery pack and comprise at least two snakelike cold plates and a plurality of single batteries, the stacking tool comprises a supporting plate; the assembling plate and the supporting plate are arranged in a stacked mode, and the assembling plate is provided with a containing part matched with the arrangement mode of the single batteries; the two positioning assemblies are located on the two opposite sides of the assembling plate in the length direction correspondingly. The two positioning assemblies are both in sliding connection with the supporting plate so as to slide to the end of the snake-shaped cold plate and are in positioning connection with the snake-shaped cold plate. The accommodating parts matched with the arrangement form of the single batteries are arranged on the assembly plate, so that the single batteries can be uniformly distributed between the adjacent snake-shaped cold plates, and the arrangement compactness and stability of the single batteries are improved; besides, the positioning assembly is used for positioning and connecting the snake-shaped cold plate, so that accurate positioning between the snake-shaped cold plate and the single battery is realized, the cooling effect of the formed battery pack is guaranteed, and the product quality is improved.

Description

Technical Field

[0001] This application relates to the field of battery assembly, and more particularly to a stacking tool and a side-pressing fixture. Background Technology

[0002] Cylindrical cells are a type of single-cell battery with high energy density and long lifespan. Currently, battery packs containing cylindrical cells also have serpentine cooling plates to control the temperature of the battery pack during electrical cycling, thereby ensuring the battery pack's operating efficiency.

[0003] However, due to the lack of effective positioning measures between individual cells and the serpentine cold plate, the compactness between individual cells is poor during the battery pack assembly process, which affects the product quality of the assembled battery pack. Utility Model Content

[0004] In view of this, the present application aims to provide a stacking tool and a side-pressing fixture to solve some or all of the above-mentioned technical problems.

[0005] To achieve the above objectives, a first aspect of this application provides a stacking tool suitable for battery packs, comprising at least two serpentine cold plates extending in the same direction, and a plurality of individual battery cells arranged between two adjacent serpentine cold plates along the extension direction of the serpentine cold plates; the stacking tool includes:

[0006] pallet;

[0007] An assembly plate, which is stacked on top of the tray, is provided with a receiving portion adapted to the arrangement of the plurality of individual battery cells; and

[0008] Two positioning components are located on opposite sides of the assembly plate along its length. Both positioning components are slidably connected to the pallet to slide to the end of the serpentine cold plate and are positioned and connected to the serpentine cold plate.

[0009] Based on the same inventive concept, a second aspect of this application also provides a side-pressure tooling, comprising:

[0010] At least one stacking tool as described in the first aspect;

[0011] Base plate;

[0012] Two support bases are provided on the same side of the base plate as the stacking tool; the two support bases are located on opposite sides of the stacking tool and have gaps between them.

[0013] A driving component, the driving component being disposed on the support base; and

[0014] A side pressure plate is connected to the drive end of the drive component and is located between the two support seats; the drive component squeezes and releases the stacking tool by driving the side pressure plate to move.

[0015] As can be seen from the above, the stacking tool and side-pressing fixture provided in this application can ensure that the individual cells are evenly distributed between adjacent serpentine cold plates by setting multiple receiving parts on the assembly plate that are adapted to the arrangement of individual cells, thereby improving the compactness and stability of the arrangement of individual cells. In addition, the positioning component is used to position and connect the serpentine cold plates so that the serpentine cold plates and individual cells can be accurately positioned, which is beneficial to ensuring the cooling effect of the battery pack and improving product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the stacking tool in this application;

[0018] Figure 2 This is a top view of the stacking tool in this application;

[0019] Figure 3 This is a top view of a single cell being installed in a stacking tool according to this application;

[0020] Figure 4 This is a schematic diagram of the structure of the first type of side-pressure tooling in this application;

[0021] Figure 5 This is a schematic diagram of assembling a battery pack using the first type of side-pressure tooling in this application;

[0022] Figure 6 This is a schematic diagram of the structure of the second type of side-pressure tooling in this application;

[0023] Figure 7 This is a schematic diagram of assembling a battery pack using the second type of side-pressure tooling in this application;

[0024] Figure 8 This is a schematic diagram illustrating the assembly of the battery pack using the second type of side-pressure tooling in this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 110. Serpentine cold-rolled steel plate;

[0027] 120. Single cell battery;

[0028] 210. Pallet; 211. First guide rail;

[0029] 220. Assembly plate; 221. Receiving part;

[0030] 230, Positioning component; 231, Sliding part; 232, Positioning part; 2322, Fitting part; 2401, First fastener; 2402, First locking hole;

[0031] 240. Top pressure plate; 241. Positioning hole; 242. Positioning pin;

[0032] 250. Second fastener; 2511. Grip part; 2512. Threaded part; 2513. Second locking hole;

[0033] 260. First hoisting unit;

[0034] 310. Base plate; 3111. Second guide rail; 3112. Third fastener; 3113. Third locking hole; 3114. Support pad; 3115. First fixing part; 3116. Limiting block; 3121. Fixing pad; 3122. Movable pad; 3123. Third guide rail; 3124. Second fixing part; 3125. Limiting pin; 3126. Insert plate; 3127. Limiting hole;

[0035] 320. Support base;

[0036] 330. Drive components;

[0037] 340. Side pressure plate; 341. Guide post;

[0038] 350. Second hoisting section. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0040] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] Cylindrical batteries are favored by users due to their high energy density and long lifespan. Currently, battery packs composed of cylindrical batteries and other individual cells are widely used in portable electronic devices, new energy vehicles, and energy storage systems, becoming an important component in driving the clean energy transition. To ensure that the battery pack maintains optimal operating efficiency during electrical cycling, a serpentine cooling plate adapted to the individual cells is typically introduced into the battery pack for thermal management. This effectively controls the operating temperature of the battery pack, preventing performance degradation due to excessive temperature and ensuring stable operation in various environments.

[0042] In practical applications, to ensure the cooling effect of the serpentine cold plate on the individual cells, the structure of the serpentine cold plate is usually adapted to the individual cells. However, the applicant found that during the battery pack assembly process, due to the lack of effective positioning measures for the individual cells, it is difficult to achieve a compact arrangement of the individual cells and the serpentine cold plate during assembly. This leads to unstable gaps between the individual cells, which not only affects the overall structural strength of the battery pack, but may also reduce the thermal management effect of the serpentine cold plate on the individual cells, thereby affecting the product quality of the battery pack.

[0043] In view of this, the first aspect of this application provides a stacking tool suitable for battery packs. The battery pack includes at least two serpentine cold plates 110 extending in the same direction, and a plurality of individual cells 120 arranged between two adjacent serpentine cold plates 110 along the extension direction of the serpentine cold plates 110. The plurality of serpentine cold plates 110 can constitute a thermal management assembly. When an individual cell 120 is located inside the thermal management assembly, the opposite sides of each individual cell 120 respectively contact the arcuate side surface of a serpentine cold plate 110 to cool the individual cell 120. The stacking tool provided in this application includes a tray 210, a mounting plate 220, and a positioning assembly 230. The following is in conjunction with... Figures 1-3The stacking tool is described in detail.

[0044] like Figures 1-3 As shown, the stacking tool according to this application includes a tray 210, an assembly plate 220, and a positioning component 230. The assembly plate 220 is stacked on top of the tray 210, and the assembly plate 220 has a receiving portion 221 adapted to the arrangement of multiple individual batteries 120. Two positioning components 230 are provided, and the two positioning components 230 are respectively located on opposite sides of the length direction of the assembly plate 220. Both positioning components 230 are slidably connected to the tray 210 so as to slide to the end of the serpentine cold plate 110 and be positioned and connected to the serpentine cold plate 110.

[0045] Specifically, Figure 1 This is a three-dimensional structural diagram of the stacking tool in this application. Figure 2 This is a top view of the stacking tool in this application. Figure 3 This is a top view of the single cell 120 in this application installed in the stacking tool.

[0046] For pallet 210, such as Figures 1-3 As shown, the assembly plate 220 and the two positioning components 230 are both located on the top of the support plate 210. The support plate 210 supports the two and provides corresponding installation positions to ensure that the assembly plate 220 and the positioning components 230 can be reasonably configured on the surface of the support plate 210.

[0047] For assembly plate 220, such as Figures 1-3 As shown, the assembly plate 220 has a receiving portion 221 adapted to the arrangement of multiple individual cells 120. That is, the receiving portions 221 are distributed on the assembly plate 220 according to a preset arrangement, and each receiving portion 221 can accommodate one individual cell 120. During the battery pack assembly process, a thermal management assembly composed of multiple serpentine cold plates 110 can be placed on the assembly plate 220, and multiple individual cells 120 can be placed in the receiving portions 221 respectively. This allows the arrangement of multiple individual cells 120 to conform to the arrangement of the receiving portions 221, so that the arrangement of multiple individual cells 120 is the same as the preset arrangement, thus meeting the battery pack assembly requirements. At the same time, by using the receiving portions 221 on the assembly plate 220, the individual cells 120 can also be evenly distributed between adjacent serpentine cold plates 110, effectively avoiding the problem of excessive distance differences between adjacent individual cells 120, which helps to improve the compactness and stability of the arrangement of individual cells 120.

[0048] For example, the receiving portion 221 may be formed to fit the bottom of the single cell 120. For example, if the single cell 120 is a cylindrical cell, the receiving portion 221 may be configured as a circular groove that fits its outer diameter, which will not be described in detail here.

[0049] For positioning component 230, such as Figures 1-3 As shown, two positioning components 230 are provided, and the two positioning components 230 are respectively located on opposite sides of the length direction of the assembly plate 220, and are used to position and connect with the opposite ends of the serpentine cold plate 110. In specific implementation, after the serpentine cold plate 110 is placed on the assembly plate 220 and corresponds to the multiple receiving parts 221, since both positioning components 230 are slidably connected to the support plate 210, the position of the positioning components 230 can be changed, and the two positioning components 230 can be slid towards the center area of ​​the assembly plate 220. When the 230 slides to the end of the serpentine cold plate 110, the positioning component 230 can be positioned and connected to the end of the serpentine cold plate 110. The positioning component 230 restricts the current position of the serpentine cold plate 110, ensuring that after the single cell 120 is installed in the receiving part 221, it can still correspond to the arc-shaped part of the serpentine cold plate 110, so that the serpentine cold plate 110 and the single cell 120 are accurately positioned, ensuring that there is sufficient contact area between the serpentine cold plate 110 and the single cell 120, so as to ensure the cooling effect of the serpentine cold plate 110.

[0050] Since the serpentine cold plate 110 and the support plate 210 are slidably connected, the serpentine cold plate 110 can be quickly installed before the battery pack is assembled, and the restriction on the serpentine cold plate 110 can be removed after the battery pack is assembled, thereby realizing the quick disassembly of the battery pack.

[0051] Since the two positioning components 230 are located on opposite sides of the assembly plate 220 and slide along the extension direction of the assembly plate 220, when the positioning component 230 slides and abuts the end of the assembly plate 220, the end of the assembly plate 220 restricts the positioning component 230 from continuing to move, so as to prevent the distance between the two positioning components 230 from being less than the distance of the assembly plate 220 and causing the serpentine cold plate 110 to deform, and to ensure that the arc-shaped side of the serpentine cold plate 110 can make full contact with the single cell 120.

[0052] The assembly process of the battery pack will be further explained in conjunction with the above embodiments. In order to improve the firmness of the single cell 120 between two adjacent serpentine cold plates 110, after the connection between the serpentine cold plate 110 and the positioning component 230 is achieved, an adhesive (such as thermally conductive adhesive) needs to be applied to the side of the serpentine cold plate 110 that contacts the single cell 120, so as to enhance the heat exchange performance between the two.

[0053] In some embodiments, each positioning component 230 includes a sliding portion 231 and a positioning portion 232; specifically, a first guide rail 211 is provided on the pallet 210, and the sliding portion 231 is slidably connected to the pallet 210 through the first guide rail 211; the positioning portion 232 is connected to the sliding portion 231; the positioning portion 232 is provided with a fitting portion 2322 for positioning and connecting with the end of the serpentine cold plate 110, and the fitting portion 2322 is adapted to the end of the serpentine cold plate 110.

[0054] For the sliding part 231, the positioning component 230 can achieve positioning, connection, separation, and disassembly of the serpentine cold plate 110 through reciprocating sliding; such as Figures 1-3 As shown, the length direction of the first guide rail 211 on the pallet 210 is the same as the length direction of the assembly plate 220. Therefore, when the sliding part 231 slides along the first guide rail 211 above the pallet 210, the sliding part 231 can gradually move closer to or away from the center area of ​​the assembly plate 220, thereby driving the positioning part 232 to move closer to or away from the end of the serpentine cold plate 110 to achieve positioning connection and separation disassembly of the serpentine cold plate 110.

[0055] The positioning part 232 is provided with a fitting part 2322 that is adapted to the serpentine cold plate 110. When the sliding block drives the positioning block to move to the end of the serpentine cold plate 110, the fitting part 2322 on the positioning part 232 can be positioned and connected to the end of the serpentine cold plate 110 to limit the current position of the serpentine cold plate 110, thereby achieving precise positioning of the serpentine cold plate 110 and the receiving part 221 of the assembly plate 220, ensuring the tightness and precision of the subsequent assembly between the single cell 120 and the serpentine cold plate 110.

[0056] For example, the fitting part 2322 can be a positioning groove opened along the thickness direction of the assembly plate 220, or a positioning hole 241 opened on the positioning part 232 along the length direction of the assembly plate 220. Both can realize the positioning connection between the end of the serpentine cold plate 110 and the positioning part 232, which will not be described in detail here.

[0057] In some embodiments, the sliding part 231 is rotatably provided with a first fastener 2401, and the support plate 210 is provided with a plurality of first locking holes 2402 adapted to the first fastener 2401 along the sliding direction of the sliding part 231.

[0058] When the end of the serpentine cold plate 110 is embedded in the fitting portion 2322 of the positioning portion 232, the position of the serpentine cold plate 110 can be restricted by the positioning portion 232 and the fitting portion 2322; since the positioning component 230 is slidably connected to the support plate 210 through the first guide rail 211, the positioning component 230 may retract or loosen during the battery pack assembly process, which may affect the positioning effect of the positioning component 230 on the serpentine cold plate 110; such as Figures 1-3 As shown, the first fastener 2401 is rotatably connected to the sliding part 231, and the support plate 210 has a first locking hole 2402 that matches the first fastener 2401. When the sliding part 231 approaches the end of the mounting plate 220 and is positioned and connected to the end of the serpentine cold plate 110 through the positioning part 232, the first fastener 2401 can be screwed into the first locking hole 2402 to lock the sliding part 231, so as to prevent the positioning component 230 from retracting or loosening and affecting its positioning effect on the serpentine cold plate 110.

[0059] For the first locking hole 2402, multiple first locking holes 2402 can be opened on the tray 210. The multiple first locking holes 2402 are arranged sequentially along the sliding direction of the sliding part 231. Therefore, the positioning component 230 can be used to position battery packs with different lengths of serpentine cold plates 110 to improve the application range and flexibility of the stacking tool. In addition, the more first locking holes 2402 there are and the smaller the distance between adjacent first locking holes 2402, the better the adaptability to the serpentine cold plate 110. This will not be elaborated further here.

[0060] In some embodiments, the stacking tool further includes a top pressure plate 240 and second fasteners 250. The top pressure plate 240 is located on the side of the mounting plate 220 away from the tray 210; the orthographic projection of the top pressure plate 240 onto the tray 210 covers the orthographic projection of the receiving portion 221 onto the tray 210; at least two second fasteners 250 are provided, and the at least two second fasteners 250 are rotatably connected to the top pressure plate 240 and detachably connected to the tray 210; wherein, in the sliding direction of the sliding portion 231, the at least two second fasteners 250 are located on opposite sides of the mounting plate 220.

[0061] During battery pack assembly, pressure holding measures need to be implemented in the vertical direction to apply pressure to the individual cells 120 between the two serpentine cold plates 110, so that the ends of any two individual cells 120 are aligned, ensuring that the upper and lower surfaces of the battery pack are relatively flat; such as Figure 1 As shown, the top pressure plate 240 is located above the single cell 120. When the top pressure plate 240 moves downward toward the support plate 210 and contacts the top of the single cell 120, it can apply pressure to the top of the single cell 120, pushing the single cell 120 to be fully embedded in the receiving part 221, so as to ensure that the upper and lower surfaces of the battery pack are relatively flat after assembly, improve its aesthetics, and ensure the mechanical and electrical connection effect of the battery pack.

[0062] For the second fastener 250, such as Figure 1As shown, each stacking tool has at least two second fasteners 250. After the top pressure plate 240 is placed on top of multiple individual cells 120, the second fasteners 250 located on opposite sides of the mounting plate 220 can be tightened to the support plate 210. By rotating the second fasteners 250, the position of the top pressure plate 240 in the vertical direction can be changed so that the top pressure plate 240 applies pressure to the individual cells 120. More specifically, since the two second fasteners 250 are located on opposite sides of the mounting plate 220, the pressure applied by the top pressure plate 240 can be made more uniform, avoiding uneven force on the battery pack and causing local unevenness on the surface of the battery pack.

[0063] For example, two second fasteners 250 may be used, and the two second fasteners 250 are distributed at opposite ends of the diagonal of the top pressure plate 240, which can avoid the problem of uneven force on the battery pack and also reduce the number of second fasteners 250 used.

[0064] In some embodiments, each second fastener 250 has a gripping portion 2511 at one end for providing a gripping position, and a threaded portion 2512 at the other end, and the support plate 210 has a second locking hole 2513 corresponding to the threaded portion 2512.

[0065] Specifically, such as Figure 1 As shown, for each second fastener 250, a gripping part 2511 can be provided at the end away from the tray 210, for example, the end of the second fastener 250 can be bent to make it easier for the user to grip, thereby reducing the difficulty of rotating the second fastener 250.

[0066] Furthermore, such as Figure 1 As shown, a threaded portion 2512 can be provided at the other end of the second connection portion. When the second fastener 250 is connected to the support plate 210, the threaded portion 2512 can be screwed into the second locking hole 2513. By rotating the second fastener 250, the degree of screwing of the threaded portion 2512 in the locking hole can be changed. That is, the greater the degree of screwing, the greater the pressure applied by the top pressure plate 240 to the individual battery 120, thereby adjusting the height of each individual battery 120 in the battery pack.

[0067] In some embodiments, one of the pallet 210 and the top pressure plate 240 is provided with a positioning hole 241, and the other is provided with a positioning pin 242 adapted to the positioning hole 241. The positioning pin 242 extends in the same direction as the thickness direction of the pallet 210.

[0068] like Figure 1As shown, when adjusting the flatness of the upper and lower surfaces of the battery pack using the top pressure plate 240, in order to reduce the installation difficulty of the top pressure plate 240 and improve its installation accuracy, a positioning hole 241 can be provided in one of the support plate 210 and the top pressure plate 240, and a positioning pin 242 adapted to the positioning hole 241 can be provided in the other. When assembling the top pressure plate 240, the end of the positioning pin 242 can be embedded in the positioning hole 241 to achieve quick installation of the top pressure plate 240 and ensure that the top pressure plate 240 fully covers the upper surface of the battery pack, thereby ensuring the squeezing effect of the top pressure plate 240 on the individual battery 120. During the pressure application process of the top pressure plate 240, the positioning pin 242 can slide along the extension direction of the positioning hole 241 to match the movement state of the top pressure plate 240, so as to prevent interference with the pressurization process of the top pressure plate 240.

[0069] For example, two positioning pins 242 and two positioning holes 241 can be provided. The two positioning pins 242 and the positioning holes 241 are distributed at opposite ends of the diagonal of the top pressure plate 240. The diagonal is symmetrical to the line connecting the two second fasteners 250, which can reduce the number of positioning pins 242 and positioning holes 241 used.

[0070] In some embodiments, the stacking tool further includes at least two first lifting parts 260, which are disposed on the same side of the pallet 210 as the assembly plate 220; wherein, in the sliding direction of the sliding part 231, the at least two first lifting parts 260 are symmetrically distributed on opposite sides of the assembly plate 220.

[0071] After the battery pack assembly is completed using stacking tools, both the stacking tools and the battery pack need to be transferred to other production lines for further processing; such as Figures 1-3 As shown, since the stacking tool is large in size and heavy in weight, at least two first lifting parts 260 can be applied in the stacking tool to provide lifting positions so that the stacking tool and battery pack can be transferred by auxiliary equipment such as lifting equipment.

[0072] For example, four first lifting parts 260 may be used, and the four first lifting parts 260 are evenly distributed in a rectangular shape on the surface of the pallet 210, which will not be described in detail here.

[0073] Furthermore, in the sliding direction of the sliding part 231, at least two first lifting parts 260 are symmetrically distributed on opposite sides of the assembly plate 220, which can ensure that the stacking tool can maintain a balanced state during the transfer process, avoid the stacking tool from tilting during lifting, and prevent local collisions caused by poor balance during lifting or falling.

[0074] In some cases, especially during battery pack assembly, multiple individual cells 120 are installed between two adjacent serpentine cold plates 110 and fixedly connected by adhesive. To ensure that the individual cell 120 is smoothly inserted between the two serpentine cold plates 110 and embedded in the receiving part 221, the distance between the corresponding arc-shaped sides of the two adjacent serpentine cold plates 110 is greater than the outer diameter of the individual cell 120. However, the applicant has found that because the serpentine cold plates 110 are prone to deformation, after the battery assembly is completed, the presence of adhesive can cause problems such as bulging of the serpentine cold plates 110, resulting in insufficient contact between the two. This not only affects the overall quality of the battery pack but also hinders the subsequent processing of the battery pack.

[0075] Based on the same inventive concept, a second aspect of this application provides a side-pressing fixture, including at least one stacking tool as disclosed in the first aspect, as well as a base plate 310, a support 320, a driving component 330, and a side-pressing plate 340, for pressing the serpentine cold plate 110 during battery pack assembly to ensure that the serpentine cold plate 110 is fully bonded to the individual battery cell 120. Figures 4-8 The exhibit provides a detailed description of the side-pressure tooling.

[0076] A side-pressure tooling includes a stacking tool, a base plate 310, two support seats 320, a drive component 330, and a side-pressure plate 340. The two support seats 320 and the stacking tool are disposed on the same side of the base plate 310. The two support seats 320 are located on opposite sides of the stacking tool and have gaps between them. The drive component 330 is disposed on the support seats 320. The side-pressure plate 340 is connected to the drive end of the drive component 330 and is located between the two support seats 320. The drive component 330 compresses and releases the stacking tool by driving the side-pressure plate 340 to move.

[0077] Specifically, Figure 4 This is a schematic diagram of the structure of the first type of side-pressure tooling in this application. Figure 5 This is a schematic diagram illustrating the assembly of the battery pack using the first type of side-pressure tooling in this application. Figure 6 This is a schematic diagram of the structure of the second type of side-pressure tooling in this application. Figure 7 This is a schematic diagram illustrating the assembly of the battery pack using the second type of side-pressure tooling in this application. Figure 8 This is a schematic diagram illustrating the assembly of the battery pack using the second type of side-pressure tooling in this application.

[0078] For the base plate 310 and the support 320, such as Figures 4-8As shown, components such as the support base 320 and the stacking tool are disposed on the surface of the base plate 310. The base plate 310 can support the support base 320 and other components and provide corresponding installation positions. Two support bases 320 are disposed on the base plate 310 and are located on opposite sides of the stacking tool. The support bases 320 can provide installation positions for the drive component 330 and the side pressure plate 340. Furthermore, there is a gap between each support base 320 and the corresponding stacking tool, which can reduce the difficulty of installing the stacking tool on the base plate 310 and prevent the stacking tool from shaking during assembly.

[0079] For drive component 330 and side pressure plate 340, such as Figures 4-8 As shown, the drive component 330 is fixedly connected to the support base 320 and the side pressure plate 340. The drive component 330 can drive the side pressure plate 340 to move so that the side pressure plate 340 can press the serpentine cold plate 110 on the side of the battery pack. Specifically, when at least one stacking tool with a battery pack is installed between two support bases 320, the drive component 330 on the two support bases 320 can apply a driving force to the side pressure plate 340, driving the side pressure plate 340 to move toward the direction closer to the battery pack.

[0080] More specifically, under the driving action of the driving component 330, when the opposite sides of the battery pack abut against the side pressure plate 340, the extrusion plate can apply pressure to the side of the serpentine cold plate 110. Under the pressure of the side pressure plate 340, the adhesive between the serpentine cold plate 110 and the single cell 120 can be spread evenly, increasing the connection area between the serpentine cold plate 110 and the single cell 120, and improving the connection effect between the serpentine cold plate 110 and the battery pack. At the same time, the side pressure plate 340 can correct the serpentine cold plate 110, reduce its deformation, so that the surface of the serpentine cold plate 110 is relatively regular, avoiding problems such as bulging, improving the overall quality of the battery pack, and ensuring the subsequent processing effect of the battery pack.

[0081] For example, the drive component 330 may be a device with linear drive, such as an elbow clamp or a telescopic rod, which can drive the side pressure plate 340 to move in a straight line and apply pressure to the side of the serpentine cold plate 110.

[0082] For example, multiple drive components 330 and side pressure plates 340 can be provided, and each drive component 330 corresponds to a side pressure plate 340, so as to apply pressure to a local side of the serpentine cold plate 110 according to the actual situation.

[0083] It should be noted that, in order to avoid the first fastener 2401 and the positioning pin 242 obstructing the side pressure plate 340, the top pressure plate 240, the first fastener 2401 and the positioning pin 242 can be removed when applying pressure to the serpentine cold plate 110 of the battery pack. This will not be elaborated further here.

[0084] In some embodiments, a guide post 341 extending in the same direction as the moving direction of the side pressure plate 340 is connected to one side of the side pressure plate 340, and the guide post 341 is slidably connected to the support base 320.

[0085] For guide post 341, etc. Figures 4-8 As shown, the end of the guide post 341 is fixedly connected to the side pressure plate 340 and slidably connected to the support base 320. When the side pressure plate 340 is driven to move by the drive component 330, the presence of the guide post 341 can guide the side pressure plate 340 and limit the movement trajectory of the side pressure plate 340, thus avoiding the problem of the side pressure plate 340 falling or the uneven application of pressure causing its movement trajectory to deviate.

[0086] In some embodiments, when a stacking tool is disposed between the two supports 320, the base plate 310 includes at least one of the following features: [connection / coupling] Figure 4 and Figure 5 Please provide a detailed explanation.

[0087] As a feasible embodiment, the base plate 310 is provided with a second guide rail 3111, and at least one of the two support seats 320 is slidably connected to the base plate 310 through the second guide rail 3111; the support seat 320 is provided with a third fastener 3112 through it, and the base plate 310 is provided with a plurality of third locking holes 3113 adapted to the third fastener 3112 along the sliding direction of the support seat 320.

[0088] When a stacking tool is provided between two support bases 320, since the stacking tool and the battery pack formed by the stacking tool are of different sizes, it is necessary to ensure that there is sufficient space between the two support bases 320 to accommodate the stacking device. Specifically, at least one of the two support bases 320 is slidably connected to the second guide rail 3111, and the extension direction of the second guide rail 3111 is the same as the movement direction of the side pressure plate 340. When adjusting the space between the two support bases 320, the support bases 320 can be controlled to slide along the extension direction of the second guide rail 3111 so that the two support bases 320 move closer to each other or further away from each other, thereby gradually increasing or decreasing the space formed between them, so that the side pressure tool can be used for battery packs of different sizes, improving its adaptability and application flexibility.

[0089] More specifically, a third fastener 3112 is provided through the support base 320, and a third locking hole 3113 adapted to it is provided on the base plate 310, so that the third fastener 3112 and the base plate 310 can be detachably connected. When adjusting the support base 320, the third fastener 3112 can be removed from the corresponding third locking hole 3113 to release the locking effect on the support base 320, so that the position of the support base 320 can be adjusted by sliding. After the adjustment is completed, the third fastener 3112 can be inserted into another third locking hole 3113 to lock the support base 320 in the current position and fix the support base 320, thus completing the adjustment of the space between the two support bases 320.

[0090] For the third locking hole 3113, multiple third locking holes 3113 can be opened in the base plate 310. Multiple third locking holes 3113 are arranged sequentially along the moving direction of the side pressure plate 340. Therefore, spaces of different sizes can be formed between the two support seats 320, improving the application range and flexibility of the side pressure tool. In addition, the more third locking holes 3113 there are and the smaller the distance between adjacent third locking holes 3113, the higher the adjustment accuracy of the support seat 320. This will not be elaborated further here.

[0091] As a feasible embodiment, the base plate 310 is provided with a support pad 3114, and the support pad 3114 is provided with a first fixing part 3115 for fixing the stacking tool.

[0092] When a stacking tool is placed between the two support bases 320, such as Figure 4 As shown, to ensure that the side pressure plate 340 can stably apply pressure to the side of the serpentine cold plate 110 in the battery pack, the side pressure plate 340 needs to correspond to the side of the serpentine cold plate 110, and ensure that there is sufficient contact area to apply pressure to the serpentine cold plate 110 when they are in contact. Due to the presence of the second guide rail 3111 and the support base 320, there may be a significant height difference between the side pressure plate 340 and the serpentine cold plate 110. By setting the support pad 3114 on the base plate 310, the height difference between the side pressure plate 340 and the serpentine cold plate 110 can be appropriately compensated, ensuring that the side pressure plate 340 fully acts on the side of the serpentine cold plate 110, so as to ensure the side pressure effect on the serpentine cold plate 110.

[0093] For example, the base plate 310 and the support pad 3114 are detachably connected, which allows for the replacement of support pads 3114 of different thicknesses, so that the side pressure fixture can be used for battery packs of different specifications.

[0094] In addition, the support pad 3114 is also provided with a first fixing part 3115 for fixing the stacking tool. When the stacking tool is placed on the support pad 3114, the first fixing part 3115 can be used to fix the stacking tool to prevent the battery pack from tilting or flipping when the side pressure tool applies unidirectional pressure, so as to ensure the squeezing effect of the side pressure plate 340 on the serpentine cold plate 110.

[0095] For example, the first fixing part 3115 can be a positioning protrusion, and the stacking tool can be provided with a corresponding positioning groove to ensure the firm connection between the stacking tool and the support pad 3114. The structure is simple and the cost is low.

[0096] For example, the first fixing part 3115 may be an electromagnetic device. When the stacking tool is placed on the surface of the support pad 3114, the electromagnetic device can be energized and the strong magnetism of the electromagnetic device can be used to attract and fix the stacking tool to ensure the firmness of the connection between the stacking tool and the surface of the support pad 3114.

[0097] As one possible embodiment, the base plate 310 is provided with at least two limiting blocks 3116, which are located on opposite sides of the stacking tool in the moving direction of the side pressure plate 340.

[0098] When a stacking tool is positioned between the two support bases 320, to further enhance the restraining effect on the stacking tool, such as Figure 4 and Figure 5 As shown, at least two limiting blocks 3116 can be provided on the base plate 310. The at least two limiting blocks 3116 can be located on opposite sides of the stacking tool. That is, when the side pressure plate 340 applies pressure to the side of the serpentine cold plate 110 of the battery pack, the limiting effect of the limiting blocks 3116 can prevent the stacking tool from shifting or misaligning in the horizontal position, so as to ensure the pressure effect on the surface of the serpentine cold plate 110.

[0099] For example, along the moving direction of the side pressure plate 340, the minimum distance between the two limiting blocks 3116 is greater than or equal to the width of the stacking tool, so as to accurately install the stacking tool on the support pad block 3114, which will not be described in detail here.

[0100] For example, the base plate 310 and the limiting block 3116 are detachably connected, which can be used to adjust the distance between the two oppositely arranged limiting blocks 3116 so that the side pressing fixture can be adapted to battery packs of different specifications.

[0101] In some embodiments, when the pallet 210 is provided with at least two stacking tools, the base plate 310 includes at least one of the following features, combined with Figures 6-8 Please provide a detailed explanation.

[0102] As a feasible embodiment, the support base 320 is fixedly connected to the base plate 310.

[0103] When at least two stacking tools are provided between two support bases 320, there are at least two battery packs arranged side by side between the two support bases 320. Therefore, the force acting on the side of the serpentine cold plate 110 in the battery pack is relatively large; such as Figures 6-8 As shown, the support base 320 can be fixedly connected to the base plate 310, which improves the connection strength between the two and creates a larger space between them, so that at least two stacking tools can be placed between them.

[0104] As a feasible embodiment, the base plate 310 is provided with a fixed pad 3121 and at least two movable pads 3122. The fixed pad 3121 is fixedly connected to the base plate 310 and located between the two support seats 320. The tray 210 is also provided with a third guide rail 3123. The movable pads 3122 are slidably connected to the base plate 310 through the third guide rail 3123 and are located between the fixed pad 3121 and the support seat 320. The fixed pad 3121 and the at least two movable pads 3122 are each provided with a second fixing part 3124 for fixing the stacking tool.

[0105] When at least two stacking tools are arranged between the two support bases 320, the side-pressure tooling contains at least two battery packs. Besides applying pressure to the serpentine cold plate 110 of the battery packs, it can also splice the at least two battery packs into a larger battery module; specifically, as... Figures 6-8 As shown, in order to compensate for the height difference between the side pressure plate 340 and the serpentine cold plate 110 and to ensure that the side pressure plate 340 fully acts on the side of the serpentine cold plate 110 of the battery pack, a fixed pad 3121 and a movable pad 3122 can be set on the base plate 310 to ensure that the side pressure plate 340 fully acts on the side of the serpentine cold plate 110, so as to ensure the splicing effect between adjacent battery packs.

[0106] More specifically, since the fixed pad 3121 is fixedly connected to the base plate 310 and located between the two support seats 320; the movable pad 3122 is slidably connected to the base plate 310 via the third guide rail 3123 and located between the fixed pad 3121 and the support seat 320, when assembling battery packs in at least two stacking tools, one stacking tool can be installed on the fixed pad 3121 and the remaining stacking tools can be installed on the movable pad 3122 to reduce the installation difficulty of the stacking tools. When the drive component 330 drives the side pressure plate 340 to apply pressure to the stacking tool, the stacking tool connected to the movable pad 3122 can be moved closer to the stacking tool fixed to the fixed pad 3121 to ensure the molding effect of the battery module.

[0107] For example, the base plate 310 is detachably connected to the fixed pad 3121, and the movable pad 3122 is detachably connected to the third guide rail 3123, so that the fixed pad 3121 and / or the movable pad 3122 of different thicknesses can be replaced, so that the side pressure fixture can be used for multiple battery packs of different specifications.

[0108] In addition, the fixed pad 3121 and the movable pad 3122 are also provided with a first fixing part 3115 for fixing the stacking tool. When the stacking tool is placed on the fixed pad 3121 or the movable pad 3122, the first fixing part 3115 can be used to fix the stacking tool to prevent the battery pack from tilting or flipping when the side pressure tool applies unidirectional pressure, so as to ensure the squeezing effect of the side pressure plate 340 on the serpentine cold plate 110.

[0109] For example, the second fixing part 3124 can be a positioning protrusion, and the stacking tool can be provided with a corresponding positioning groove to ensure the firmness of the connection between the stacking tool and the fixing pad 3121, and between the stacking tool and the movable pad 3122. The structure is simple and the cost is low.

[0110] For example, the second fixing part 3124 can be an electromagnetic device. When the stacking tool is placed on the surface of the support pad 3114, the electromagnetic device can be energized and the strong magnetism of the electromagnetic device can be used to attract and fix the stacking tool to ensure the firmness of the connection between the stacking tool and the fixed pad 3121, and between the stacking tool and the movable pad 3122.

[0111] As a feasible embodiment, the base plate 310 is provided with at least two limiting pins 3125, and in the moving direction of the side pressure plate 340, the at least two limiting pins 3125 are respectively located on opposite sides of the stacking tool; the base plate 310 is provided with an insert plate 3126, and the insert plate 3126 has a plurality of limiting holes 3127 adapted to the limiting pins 3125 along the moving direction of the side pressure plate 340.

[0112] When at least two stacking tools are positioned between the two support bases 320, to further enhance the restraining effect on the at least two stacking tools, such as Figures 6-8 As shown, when limiting the sliding range of the movable pad 3122, a pin can be inserted into the socket on the insert plate 3126 to limit the installation range of at least two stacking tools between the two support plates, so as to prevent the movable pad 3122 from detaching from the third guide rail 3123 during the sliding process and affecting the splicing effect of adjacent battery packs.

[0113] Furthermore, multiple limiting holes 3127 can be opened in the insert plate 3126. The multiple limiting holes 3127 are arranged sequentially along the moving direction of the side pressure plate 340. Therefore, the side pressure tooling can be adapted to stacking tools of different sizes or numbers in order to form battery packs of different sizes. In addition, the more limiting holes 3127 there are and the smaller the distance between adjacent limiting holes 3127, the better the limiting effect on the movable pad 3122. This will not be elaborated further here.

[0114] Furthermore, such as Figure 7 At least two battery packs are spliced ​​together using a side-pressing tool. Two adjacent and side-by-side stacking tools can approach and abut against each other. At this time, a new receiving portion 221 can be formed between the two assembly plates 220. Then, an adhesive is applied to the serpentine cold plates 110 adjacent to the two battery packs, and then the individual battery cells 120 are inserted into the new receiving portion 221 so that the individual battery cells 120 are respectively connected to the serpentine cold plates 110 of the two battery packs, thereby forming a larger battery module.

[0115] In some embodiments, the side-pressure fixture further includes a plurality of second lifting parts 350, which are disposed on the same side of the base plate 310 as the support base 320, and the plurality of second lifting parts 350 are rectangularly distributed on the base plate 310.

[0116] When using side-pressure fixtures to move at least one battery pack, auxiliary tools such as lifting equipment are also required; for example Figures 4-8 As shown, since the side-pressure fixture with at least one stacking tool and at least one battery pack is larger and heavier, multiple second lifting parts 350 can be applied in the stacking tool to provide lifting positions so that the side-pressure fixture with the stacking tool and battery pack can be transferred by auxiliary equipment such as lifting equipment.

[0117] Furthermore, multiple second lifting sections 350 can be provided, and these multiple second lifting sections 350 can be distributed in a rectangular shape on the surface of the base plate 310. This ensures good balance during the transfer of the side-pressure fixture, prevents the side-pressure fixture from tilting during lifting, and prevents local collisions due to poor balance during lifting or lowering.

[0118] Four second hoisting parts 350 can be used, and the four second hoisting parts 350 are evenly distributed in a rectangular shape on the surface of the base plate 310, which will not be described in detail here.

[0119] It should be noted that some embodiments of this application have been described above. Other embodiments are within the scope of the appended claims.

[0120] The various embodiments in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0121] The description in this application is given for illustrative purposes and is not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of this application and to enable those skilled in the art to understand this application and design various embodiments with various modifications suitable for a particular purpose.

[0122] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0123] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0124] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A stacked tool suitable for a battery pack, the battery pack comprising at least two serpentine cold plates extending in the same direction, and a plurality of single cells arranged between two adjacent serpentine cold plates in the direction of extension of the serpentine cold plates; characterized in that, The stacking tool includes: pallet; An assembly plate, stacked on top of the tray, wherein the assembly plate has a receiving portion adapted to the arrangement of the plurality of individual battery cells; and Two positioning components are located on opposite sides of the assembly plate along its length. Both positioning components are slidably connected to the pallet to slide to the end of the serpentine cold plate and are positioned and connected to the serpentine cold plate.

2. The stacked tool of claim 1, wherein, Each of the positioning components includes: The sliding part, wherein a first guide rail is provided on the pallet, and the sliding part is slidably connected to the pallet via the first guide rail; and The positioning part is connected to the sliding part; the positioning part is provided with a fitting part for positioning and connecting with the end of the serpentine cold plate, the fitting part being adapted to the end of the serpentine cold plate.

3. The stacked tool of claim 2, wherein, The sliding part is rotatably provided with a first fastener, and the support plate has a plurality of first locking holes adapted to the first fastener along the sliding direction of the sliding part.

4. The stacking tool according to claim 2, characterized in that, Also includes: A top pressure plate, the top pressure plate being located on the side of the assembly plate away from the support plate; The projection of the top pressure plate onto the tray covers the projection of the receiving part onto the tray; as well as At least two second fasteners are provided, each of which is rotatably connected to the top pressure plate and detachably connected to the support plate; wherein... In the sliding direction of the sliding portion, at least two of the second fasteners are located on opposite sides of the assembly plate.

5. The stacking tool according to claim 4, characterized in that, Each of the second fasteners has a gripping part at one end and a threaded part at the other end, and the support plate has a second locking hole corresponding to the threaded part.

6. The stacking tool according to claim 4, characterized in that, One of the pallet and the top plate is provided with a positioning hole, and the other is provided with a positioning pin that matches the positioning hole. The positioning pin extends in the same direction as the thickness direction of the pallet.

7. The stacking tool according to claim 3, characterized in that, Also includes: At least two first lifting parts, and at least two first lifting parts are disposed on the same side of the pallet as the assembly plate; wherein, In the sliding direction of the sliding part, at least two of the first lifting parts are symmetrically distributed on opposite sides of the assembly plate.

8. A side-pressure tooling, characterized in that, The side-pressure fixture includes: At least one stacking tool as described in any one of claims 1-7; Base plate; Two support bases are provided on the same side of the base plate as the stacking tool; the two support bases are located on opposite sides of the stacking tool and have gaps between them. A driving component, the driving component being disposed on the support base; and A side pressure plate is connected to the drive end of the drive component and is located between the two support seats; the drive component squeezes and releases the stacking tool by driving the side pressure plate to move.

9. The side-pressure tooling according to claim 8, characterized in that, One side of the side pressure plate is connected to a guide post whose extension direction is the same as the moving direction of the side pressure plate, and the guide post is slidably connected to the support base.

10. The side-pressure tooling according to claim 8, characterized in that, When a stacking tool is positioned between the two support bases, The base plate is provided with a second guide rail, and at least one of the two support seats is slidably connected to the base plate through the second guide rail; a third fastener is provided through the support seat, and the base plate has a plurality of third locking holes adapted to the third fastener along the sliding direction of the support seat; or The base plate is provided with a support pad, and the support pad is provided with a first fixing part for fixing the stacking tool; or The base plate is provided with at least two limiting blocks, and in the sliding direction of the side pressure plate, the at least two limiting blocks are respectively located on opposite sides of the stacking tool.

11. The side-pressure tooling according to claim 8, characterized in that, When the base plate is provided with at least two of the stacking tools The support base is fixedly connected to the base plate; or The base plate is provided with a fixed pad and at least two movable pads. The fixed pad is fixedly connected to the base plate and located between the two support seats. The tray is also provided with a third guide rail. The movable pad is slidably connected to the base plate through the third guide rail and is located between the fixed pad and the support seat. Furthermore, the fixed pad and at least two movable pads are each provided with a second fixing part for fixing the stacking tool. The base plate is provided with at least two limiting pins, and in the sliding direction of the side pressure plate, the at least two limiting pins are respectively located on opposite sides of the stacking tool; the base plate is provided with an insert plate, and the insert plate has a plurality of limiting holes adapted to the limiting pins along the moving direction of the side pressure plate.

12. The side-pressure tooling according to claim 8, characterized in that, Also includes: Multiple second lifting parts are provided, which are located on the same side of the base plate as the support base, and are arranged in a rectangular pattern on the base plate.

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