A tray jig and a bonding apparatus

Abstract

The utility model belongs to the production and manufacturing technical field of battery belongs to the production and manufacturing technical field of battery, disclose a kind of tray fixture and bonding device. The tray fixture includes base, first clamping piece, first positioning assembly and second positioning assembly. Base is used to accommodate heat exchange plate extending along the first direction;Two first clamping pieces are oppositely arranged and the space for clamping battery cell is formed between two first clamping pieces, and two first clamping pieces can be relatively close or relatively far away;First positioning assembly is arranged in base, and one end of first positioning assembly is connected with heat exchange plate;Second positioning assembly is arranged in base, and the other end of second positioning assembly is connected with heat exchange plate, and second positioning assembly is used to make heat exchange plate receive tension along the first direction. By the utility model, when cylindrical battery cell is bonded, the consistency of the gap between battery cell can be guaranteed, so that subsequent welding procedure is smoothly completed, welding quality is improved, and the performance of battery pack is ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery production and manufacturing technology, and in particular to a tray fixture and bonding device. Background Technology

[0002] Cylindrical battery packs, as the core energy source for new energy vehicles and energy storage systems, typically consist of numerous cylindrical cells connected in series and parallel to form modules integrated within a housing. In cylindrical battery packs, the thermal management performance of the cells is a key factor determining the overall safety, lifespan, and energy efficiency of the pack. Because cylindrical battery packs generate a significant amount of heat during charging and discharging, if this heat cannot be dissipated evenly and promptly, a temperature gradient will appear inside the pack, leading to performance degradation, shortened lifespan, and even thermal runaway, among other safety issues.

[0003] Currently, liquid cooling technology has become the mainstream heat dissipation solution for cylindrical battery packs due to its high thermal conductivity and temperature uniformity. The core component of this system is the heat exchange plate, which is typically designed as a metal plate structure with internal flow channels. The coolant circulates within the channels, carrying away heat through the walls in contact with the battery cells. In a typical cylindrical battery pack design, multiple cylindrical cells are usually arranged in a specific pattern and bonded to the surface of the heat exchange plate using thermally conductive adhesive, thus achieving both mechanical fixation and thermal conduction.

[0004] Currently, in existing bonding processes, the gaps between cylindrical cells are inconsistent, which brings great difficulties to the subsequent welding of battery modules (welding of busbars or connecting pieces), directly affecting the welding quality and efficiency, and further impacting the performance of cylindrical battery packs. Utility Model Content

[0005] The purpose of this invention is to provide a tray fixture and bonding device to ensure the consistency of gaps during the bonding of cylindrical battery cells, thereby smoothly completing subsequent welding processes, improving welding quality, and ensuring the performance of the battery pack.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In the first aspect, a pallet fixture includes:

[0008] A base for accommodating heat exchange plates extending in a first direction;

[0009] The first clamping member, two first clamping members are arranged opposite to each other, and a space for clamping the battery cell is formed between the two first clamping members, and the two first clamping members can be relatively close to each other or relatively far apart;

[0010] A first positioning component is disposed on the base, and the first positioning component is connected to one end of the heat exchange plate;

[0011] A second positioning component is disposed on the base, the second positioning component is connected to the other end of the heat exchange plate, and the second positioning component is used to subject the heat exchange plate to a tension force along the first direction.

[0012] In a second aspect, an adhesive bonding apparatus includes the aforementioned tray fixture and a material handling assembly, the material handling assembly being used to clamp the battery cell and press the battery cell against the adhesive surface of the heat exchange plate.

[0013] Beneficial effects:

[0014] In the first aspect of this application, a base provides stable support for a heat exchange plate to accommodate the heat exchange plate extending along a first direction. Two clamping members are arranged opposite each other to form an adjustable clamping space, thereby accommodating the clamping and release of the battery cells. A first positioning component is connected to one end of the heat exchange plate to prevent the heat exchange plate from moving. A second positioning component is connected to the other end of the heat exchange plate and applies tension to the heat exchange plate by moving along the first direction, eliminating the slack state of the heat exchange plate caused by various factors (such as thermal expansion and contraction or warping), thereby maintaining stable tension and making the portions of the heat exchange plate used for placing the battery cells tend to be consistent. While ensuring accurate installation of the battery cells, the gaps between the battery cells can be kept consistent, thereby improving welding quality and ensuring the performance of the battery pack.

[0015] In the second aspect of this application, the bonding device based on the tray fixture can ensure bonding quality by guaranteeing the consistency of cell gaps, thereby improving the performance of the battery pack. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the bonding between the heat exchange plate and the battery cell provided in this embodiment of the utility model;

[0017] Figure 2 This is a first structural schematic diagram of the pallet fixture provided in this embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the second structure of the tray fixture provided in this embodiment of the utility model;

[0019] Figure 4 This is a partial top view of the tray fixture provided in this embodiment of the utility model;

[0020] Figure 5 This is a cross-sectional view of the tray fixture and heat exchange plate provided in this embodiment of the utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the cam and transmission block cooperation provided in an embodiment of the present invention;

[0022] Figure 7This is a first structural schematic diagram of a partial bonding device provided in an embodiment of this utility model;

[0023] Figure 8 This is a second structural schematic diagram of a partial bonding device provided in an embodiment of this utility model.

[0024] In the picture:

[0025] X, first direction;

[0026] 10. Battery cell; 20. Heat exchange plate; 201. Positioning hole;

[0027] 100. Base plate; 30. Material handling assembly; 301. Second clamping component; 302. Adsorption component;

[0028] 1. Base; 11. Wave structure; 2. First clamping component; 21. Compensating component; 22. Limiting part; 3. First positioning component; 31. First mounting seat; 311. Limiting groove; 32. Positioning pin; 4. Second positioning component; 41. Second mounting seat; 42. Elastic component; 43. Cam; 44. Transmission block. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] Please see the appendix Figure 1 It should be noted that the heat exchange plate 20, due to its wavy structure, is also known as the serpentine plate. The heat exchange plate 20 plays a crucial role in the battery system, primarily in thermal management and structural reinforcement. During charging and discharging, the battery continuously generates heat. Excessive temperature or large temperature differences within the module can lead to performance degradation, shortened lifespan, and even serious safety issues such as thermal runaway. The thermal management system comprised of the heat exchange plate 20 efficiently removes the heat generated by the battery cells 10 by circulating coolant (commonly a mixture of ethylene glycol and water) within the flow channels. Compared to air-cooled systems, liquid-cooled systems (with the heat exchange plate 20 as a key component) have higher heat exchange efficiency, more effectively control the battery operating temperature, and significantly reduce the temperature difference between the battery cells 10, ensuring the battery pack operates within its optimal temperature range (e.g., 25℃~40℃), thereby guaranteeing its performance, safety, and lifespan. Besides thermal management, the heat exchange plate 20 also serves as an important structural component. By firmly bonding the battery cells 10 to the heat exchange plate 20 using structural adhesive, all the battery cells 10 can be "bundled" into a whole. This design makes full use of the strength of the battery casing itself, working together with the heat exchange plate 20 to significantly improve the mechanical strength and vibration and shock resistance of the entire battery module. At the same time, this integrated design reduces additional structural components, which helps to improve the energy density and space utilization of the battery pack.

[0034] During the bonding process between the battery cell 10 and the heat exchange plate 20, inconsistent gaps between the battery cells 10 can lead to numerous problems. For example, inconsistent gaps directly result in differences in the contact thermal resistance between the battery cell 10 and the heat exchange plate 20. Even if the adhesive layer thickness remains consistent, the inconsistent gaps between the battery cells 10 lead to different heat dissipation conditions under the same heat exchange plate 20 conditions, causing differences in the operating temperature of the battery cells 10. This, in turn, results in an uneven temperature field within the battery pack, leading to differences in the internal resistance, capacity decay rate, and aging rate of the battery cells 10. During long-term cycling, these differences gradually amplify, accelerating the inconsistency of the battery pack and ultimately causing a decrease in the usable capacity and a shortened lifespan of the entire battery pack. Furthermore, inconsistent gaps also cause differences in subsequent welding quality, directly leading to inconsistent connection resistances between the battery cells 10. During charging and discharging, the battery cell 10 circuit with higher connection resistance generates more heat, further exacerbating the temperature rise in that area of ​​the battery, creating a vicious cycle of heat and electricity. Simultaneously, this also affects the dynamic balancing effect of the battery pack, making it difficult for the battery management system to accurately manage the energy of the cells 10, thereby affecting the output power and energy efficiency of the battery pack. Furthermore, the uneven gaps also mean that the expansion and contraction of the battery during charging and discharging will be subject to uneven constraints from the surrounding structure, resulting in localized mechanical stress concentration. Under long-term effects, this stress may lead to microcracks in the battery pack casing or connectors, and even affect the stability of the battery pack structure.

[0035] Therefore, ensuring the consistency of the gap between the battery cells 10 is of great significance during the bonding process between the battery cells 10 and the heat exchange plate 20.

[0036] Please see the appendix Figure 2 and attached Figure 3 The first aspect of this embodiment relates to a tray fixture. This fixture is used to ensure the consistency of the gaps between the battery cells 10, thereby guaranteeing the performance and stability of the battery pack.

[0037] The tray fixture includes a base 1, a first clamping member 2, a first positioning component 3, and a second positioning component 4. The base 1 is used to accommodate a heat exchange plate 20 extending along a first direction X; the two first clamping members 2 are arranged opposite each other, and a space for clamping the battery cell 10 is formed between the two first clamping members 2, and the two first clamping members 2 can be relatively close or relatively far apart; the first positioning component 3 is disposed on the base 1 and near one end of the first clamping member 2 in the first direction X, and the first positioning component 3 is connected to one end of the heat exchange plate 20; the second positioning component 4 is disposed on the base 1 and near the other end of the first clamping member 2, the second positioning component 4 is connected to the other end of the heat exchange plate 20, and the second positioning component 4 causes the heat exchange plate 20 to be subjected to a tension force in the first direction X.

[0038] It should be noted that the first direction X refers to the length direction of the heat exchange plate 20, which is also the direction in which the battery cells 10 are arranged and extended on the heat exchange plate 20.

[0039] Specifically, this pallet fixture includes a base plate 100, and a base 1 can be fixed to the base plate 100 by screws. In addition, a first positioning component 3 and a second positioning component 4 are also respectively disposed on the base plate 100. The base plate 100 is a rectangular flat plate used to provide support and positioning for other structural components.

[0040] The base 1 provides stable support for the heat exchange plate 20 to accommodate the heat exchange plate 20 extending along the first direction X. The base 1 is a one-piece structure. To balance strength and weight, the base 1 can be made of aluminum alloy or stainless steel to reduce its own weight while providing sufficient supporting rigidity. The top wall of the base 1 is used to support the heat exchange plate 20, therefore the top wall of the base 1 needs to be kept clean at all times to avoid impurities affecting the adhesive coating quality of the heat exchange plate 20.

[0041] The first clamping member 2 is a long, strip-shaped plate. Two first clamping members 2 are arranged opposite each other, forming an adjustable clamping space to accommodate the clamping and releasing of the battery cell 10. The first clamping members 2 can achieve synchronous opposite movement through a bidirectional lead screw mechanism. Specifically, a lead screw with opposite left and right threads is set below the base 1, and a corresponding slider nut is connected to the bottom of each first clamping member 2. When the lead screw is driven to rotate by a servo motor, the two first clamping members 2 can move closer or further apart synchronously. To precisely control the displacement, a grating ruler feedback system can be used to control the position accuracy within ±0.05mm.

[0042] The first positioning component 3 is connected to one end of the heat exchange plate 20 to prevent the heat exchange plate 20 from moving. Specifically, a plug-in and / or snap-fit ​​connection method can be used. Of course, if the heat exchange plate 20 is made of ferromagnetic material (such as low carbon steel), the first positioning component 3 can be embedded with a permanent magnet array. The magnets are isolated by a magnetic shielding layer to form a concentrated magnetic field, which attracts the end of the heat exchange plate 20 to be pressed tightly against the reference surface, thereby realizing the rapid installation of the heat exchange plate 20.

[0043] The second positioning component 4 is connected to the other end of the heat exchange plate 20. By moving along the first direction X, it applies tension to the heat exchange plate 20, eliminating any slack caused by various factors (such as thermal expansion and contraction or warping), thereby maintaining stable tension and ensuring that the portions of the heat exchange plate 20 used for placing the battery cells 10 are consistent. This ensures that the gaps between the battery cells 10 remain consistent while guaranteeing accurate installation. There are many ways to apply tension to the heat exchange plate 20. For example, a servo motor can drive a lead screw, elastic tensioning can be used, or even hydraulic synchronous tensioning can be employed. Therefore, there are correspondingly various structures for the second positioning component 4. This embodiment will use elastic tensioning as an example and will discuss the composition, structure, and movement principle of the second positioning component 4 in detail.

[0044] Furthermore, the base 1 has a wave structure 11 that matches the shape of the heat exchange plate 20.

[0045] In this embodiment, when the heat exchange plate 20 is placed on the base 1, the wavy profile of its bottom matches the shape of the wavy structure 11 on the base 1. This ensures that the supporting force is evenly distributed along the extension direction (first direction X) of the heat exchange plate 20, effectively avoiding local stress concentration caused by insufficient support. At the same time, the matching shapes of the two achieve surface contact support, avoiding the limitations of line contact or point contact.

[0046] Please see the appendix Figure 4 In one embodiment of this invention, a limiting part 22 is provided on the opposite surface of the first clamping member 2. The limiting part 22 abuts against the battery cell 10 and is a protrusion.

[0047] In this embodiment, the end of the battery cell 10 is provided with a terminal post, and the first clamping member 2 is provided with a limiting part 22 corresponding to the terminal post. The limiting part 22 is a protrusion, which applies a constraint force to the terminal post from the side, offsetting the external force that may cause the terminal post to tilt or translate, and ensuring the stability of the terminal post's axial position. During the process of placing the battery cell 10 into the fixture, the protrusion can play a guiding role, guiding the terminal post to reach the preset position quickly and accurately, improving assembly efficiency. Compared with large-area rigid clamping, a reasonably designed protrusion can disperse stress through local contact, avoiding excessive clamping force that may cause indentations or damage to the surface of the terminal post (especially aluminum or copper-plated nickel terminal posts), thus ensuring the overall quality of the battery cell 10.

[0048] Furthermore, the limiting part 22 is elastic or the limiting part 22 is elastically connected to the first clamping member 2.

[0049] Specifically, the limiting part 22 can be made of elastic material, and achieve elastic clamping of the terminal of the battery cell 10 through its own elasticity. Of course, the limiting part 22 can also be connected to the first clamping member 2 through a spring, thereby achieving elastic clamping of the terminal of the battery cell 10.

[0050] In this embodiment, even among cells 10 from the same batch, there are micron-level tolerances in their diameter, height, and electrode protrusion height. The rigid limiting part 22 directly translates these tolerances into uneven clamping stress. Through the elastic limiting part 22 or the elastic connection between the limiting part 22 and the first clamping member 2, these deviations can be absorbed and compensated through its own deformation, ensuring that the clamping force on each cell 10 is uniform.

[0051] In another embodiment of this invention, a compensation member 21 is provided on the opposing surfaces of the two first clamping members 2. The compensation member 21 clamps all the battery cells 10 located on the heat exchange plate 20 by elastic deformation. The compensation member 21 is an elastic pad.

[0052] Specifically, the compensation component 21 can be fixed to the surface of the first clamping component 2 by means of bonding, embedding, or adsorption. The compensation component 21 can be a silicone rubber pad, a foamed polymer pad, a fiber-reinforced elastic pad, etc. When the two first clamping components 2 approach each other under the action of the driving mechanism, the compensation component 21 will contact the battery cell 10 first. As the first clamping components 2 continue to move, the compensation component 21 is compressed, generating an elastic counterforce, which is the clamping force applied to the battery cell 10. Since the compensation component 21 is an elastic pad, it has continuous stress-strain response characteristics. Even if there are micron-level tolerances in the height or width directions of a row of battery cells 10, the compensation component 21 can adapt and adjust itself through different compression amounts to ensure that each battery cell 10 can be subjected to the clamping force, thereby avoiding damage to the casing of a single battery cell 10 due to excessive force, or displacement in subsequent processes due to insufficient force.

[0053] In this embodiment, by adding the compensation component 21, adaptive compensation tolerance can be used to greatly reduce the damage defects of the battery cell 10 caused by uneven clamping force, thereby improving the consistency and yield of battery production. In addition, it can also compensate for the problem that the sequentially arranged battery cells 10 cannot fully contact the fixture due to the processing error of the long pressing fixture, thereby ensuring that each battery cell 10 can be pressed. The elastic buffering effect of the compensation component 21 also reduces the impact and wear caused by hard contact, protects the first clamping component 2 and the battery cell 10, and reduces the maintenance frequency and cost of the fixture.

[0054] Please see the appendix Figure 5 Furthermore, the first positioning component 3 includes a positioning pin 32, which is used to be inserted into the positioning hole 201 at one end of the heat exchange plate 20, and at least two positioning pins 32 are provided.

[0055] Both ends of the heat exchange plate 20 have circular positioning holes 201, which are used for subsequent installation and fixing of the heat exchange plate 20. In this tray fixture, the first positioning component 3 can utilize the positioning holes 201 and provide positioning pins 32 that cooperate with them, so that the heat exchange plate 20 is limited in the first direction X by the first positioning component 3. In addition, by providing at least two positioning pins 32, the heat exchange plate 20 is further limited in the rotation direction.

[0056] Furthermore, the first positioning component 3 includes a first mounting base 31, and a positioning pin 32 is erected on the first mounting base 31. The first mounting base 31 is provided with a limiting groove 311, and a portion of the heat exchange plate 20 is disposed within the limiting groove 311. The limiting groove 311 is used to limit the heat exchange plate 20 in the width direction. The length of the positioning pin 32 ranges from 10mm to 15mm, wherein the length of the positioning pin 32 can be 10mm, 10.5mm, 11mm, 12mm, 12.5mm, 13mm, 13.4mm, 14mm, 14.6mm, or 15mm, and can specifically be one of the aforementioned values, or any value between 20mm and 30mm. The length of the positioning pin 32 should ensure smooth passage through the positioning hole 201 without excessive protrusion after passing through the positioning hole 201.

[0057] Specifically, the first mounting base 31 is an integral structure in the shape of an L. The first mounting base 31 has a U-shaped limiting groove 311. Part of the heat exchange plate 20 is disposed in the limiting groove 311, and the heat exchange plate 20 is limited in the width direction.

[0058] In this embodiment, the limiting groove 311 ensures the stability of the heat exchange plate 20 and also achieves the initial positioning of the heat exchange plate 20 before installation, providing a positioning basis for the subsequent installation of the heat exchange plate 20.

[0059] In this embodiment, the thickness d of the heat exchange plate 20 is 1.5mm to 2.5mm. The length of the positioning pin 32 can be 1.5mm, 1.6mm, 1.71mm, 1.82mm, 1.9mm, 2mm, 2.2mm, 2.3mm, 2.4mm, or 2.4mm. The value can be one of the aforementioned values ​​or any value between 1.5mm and 2.5mm.

[0060] Please continue to refer to the appendix. Figure 5 Optionally, the second positioning component 4 includes a second mounting base 41, which is connected to the other end of the heat exchange plate 20, and the second mounting base 41 can be close to or away from the base 1.

[0061] Specifically, the second mounting base 41 is also L-shaped, and the second mounting base 41 can slide on the base plate 100, thereby moving closer to and further away from the base 1. The second mounting base 41 can be connected to the other end of the heat exchange plate 20 by bolts, and the second mounting base 41 and the base plate 100 can be slidably connected by a slide rail. At the same time, an elastic element 42 is connected between the second mounting base 41 and the base 1.

[0062] In this embodiment, after the heat exchange plate 20 is installed on the base 1, the second mounting seat 41 first moves towards the base 1, so that the other end of the heat exchange plate 20 is smoothly connected to the heat exchange plate 20. At this time, the elastic element 42 is compressed. After the heat exchange plate 20 is installed, the elastic element 42 recovers part of its deformation, thereby squeezing the second mounting seat 41 to move away from the base 1, so that the heat exchange plate 20 is subjected to tension and is tensioned. The second positioning component 4 has a simple overall structure and is easy to install, ensuring the compactness of the overall fixture.

[0063] Optionally, the second positioning component 4 further includes a cam 43 and a transmission block 44. The transmission block 44 is connected to the side of the second mounting base 41 away from the elastic member 42. The cam 43 is connected to the transmission block 44 in a driving connection. The cam 43 presses the transmission block 44 to compress the elastic member 42.

[0064] Specifically, by manually or electrically driving the cam 43, the rotation of the cam 43 is achieved, thereby squeezing the transmission block 44. First, the second mounting seat 41 moves closer to the base 1. After the heat exchange plate 20 is installed, as the cam 43 continues to rotate, the squeezing effect on the transmission block 44 gradually decreases based on the displacement adjustment. At this time, part of the elastic element 42 recovers its elasticity, causing the second mounting seat 41 to move away from the base 1, thereby tensioning the heat exchange plate 20.

[0065] Please see the appendix Figure 6 Furthermore, the surfaces of the cam 43 and the transmission block 44 that contact each other are inclined relative to the first direction X, so that the transmission block 44 forms a wedge shape, which can improve the adjustment efficiency of the displacement of the second mounting seat 41.

[0066] Please see the appendix Figure 7 and attached Figure 8 The second aspect of this embodiment also relates to an adhesive device, which includes a tray fixture and a material handling assembly 30, the material handling assembly 30 being used to clamp the battery cell 10 and press the battery cell 10 against the adhesive surface of the heat exchange plate 20.

[0067] The material handling component 30 clamps the battery cell 10 and places it on the heat exchange plate 20, which is pre-coated with adhesive. At the same time, the material handling component 30 causes the battery cell 10 to press against the bonding surface of the heat exchange plate 20, thereby achieving bonding between the two.

[0068] In this embodiment, the bonding device based on the tray fixture can ensure bonding quality by ensuring the gap between the battery cells 10 is consistent, thereby improving the performance of the battery pack.

[0069] Furthermore, the material handling assembly 30 includes a main body and a second clamping member 301 disposed on the main body, the second clamping member 301 being used to clamp the battery cell 10.

[0070] In this embodiment, the second clamping member 301 is disposed on the main body. The second clamping member 301 can be a gripper mounted on a feeding robot, and the opening and closing action of the gripper is used to clamp and release the battery cell 10. The feeding assembly 30 also includes an adsorption member 302 disposed on the main body, which is used to adsorb the outer wall of the battery cell 10. When the clamping member of the feeding assembly 30 clamps the battery cell 10 and places it on the heat exchange plate 20, the second clamping member 301 releases the battery cell 10, and the adsorption member 302 remains adsorbed on the outer wall of the battery cell 10. The feeding robot drives the adsorption member 302 to press down on the battery cell 10. In this embodiment, the adsorption member 302 is elastically connected to the main body by means of a spring, and the elasticity of the spring is used to buffer and compensate for the battery cell 10.

[0071] In the manufacturing process of cylindrical battery packs, the typical process flow for bonding cylindrical batteries to the heat exchange plate 20 includes the following steps: First, the heat exchange plate 20 is clamped by the second clamping member 301 of the material handling assembly 30, and then the two first clamping members 2 are opened relatively far apart. The material handling assembly 30 accurately places the heat exchange plate 20 on the base 1 of the tray fixture. The cells are precisely placed in the corresponding areas of the heat exchange plate 20 coated with adhesive according to the predetermined layout. Then, the material handling assembly 30 continues to clamp the battery cells 10 in sequence and place them on the adhesive surface of the heat exchange plate 20. The battery cells 10 are pressed down by the adsorption member 302 to ensure reliable bonding. After the battery cells 10 are arranged on the heat exchange plate 20, the first clamping members 2 are relatively close to clamp all the battery cells 10.

[0072] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A tray fixture, characterized in that, include: A base (1) is used to accommodate a heat exchange plate (20) extending in a first direction. The first clamping member (2) is arranged opposite to the first clamping member (2), and a space for clamping the battery cell (10) is formed between the two first clamping members (2). The two first clamping members (2) can be relatively close or relatively far apart. A first positioning component (3) is disposed on the base (1), and the first positioning component (3) is connected to one end of the heat exchange plate (20); The second positioning component (4) is disposed on the base (1). The second positioning component (4) is connected to the other end of the heat exchange plate (20), and the second positioning component (4) is used to subject the heat exchange plate (20) to a tension force along the first direction.

2. The pallet fixture according to claim 1, characterized in that, The base (1) has a wave structure (11) that matches the shape of the heat exchange plate (20).

3. The pallet fixture according to claim 1, characterized in that, The first clamping member (2) has a limiting part (22) on its opposite surface, and the limiting part (22) abuts against the battery cell (10).

4. The pallet fixture according to claim 3, characterized in that, The limiting part (22) is a protrusion.

5. The pallet fixture according to claim 3, characterized in that, The limiting part (22) is elastic or the limiting part (22) is elastically connected to the first clamping member (2).

6. The pallet fixture according to claim 1, characterized in that, Compensating members (21) are provided on the opposing surfaces of the two first clamping members (2), the compensating members (21) clamping all the cells (10) located on the heat exchange plate (20) by elastic deformation.

7. The pallet fixture according to claim 6, characterized in that, The compensation component (21) is an elastic pad.

8. The pallet fixture according to claim 1, characterized in that, The first positioning component (3) includes at least two positioning pins (32), which are used to be inserted into the positioning hole (201) at one end of the heat exchange plate (20); the length of the positioning pin (32) is 10mm~15mm.

9. The pallet fixture according to claim 8, characterized in that, The first positioning component (3) includes a first mounting base (31), and the positioning pin (32) is erected on the first mounting base (31).

10. The pallet fixture according to claim 9, characterized in that, The first mounting base (31) is provided with a limiting groove (311), and the heat exchange plate (20) is partially disposed in the limiting groove (311). The limiting groove (311) is used to limit the heat exchange plate (20) in the width direction.

11. The pallet fixture according to claim 1, characterized in that, The second positioning component (4) includes a second mounting base (41) and an elastic element (42). The second mounting base (41) is connected to the other end of the heat exchange plate (20). The second mounting base (41) can be close to or away from the base (1). The two ends of the elastic element (42) are respectively connected to the second mounting base (41) and the base (1).

12. The pallet fixture according to claim 11, characterized in that, The second positioning component (4) further includes a cam (43) and a transmission block (44), the transmission block (44) being connected to the side of the second mounting base (41) away from the elastic member (42), the cam (43) being drivenly connected to the transmission block (44), wherein the cam (43) presses the transmission block (44) to compress the elastic member (42); the surfaces of the cam (43) and the transmission block (44) in contact are inclined relative to the first direction.

13. An adhesive bonding device, characterized in that, Includes a tray fixture and a material handling assembly (30) as described in any one of claims 1-12, the material handling assembly (30) being used to clamp the battery cell (10) and cause the battery cell (10) to press against the adhesive surface of the heat exchange plate (20).

14. The bonding device according to claim 13, characterized in that, The material handling assembly (30) includes a main body, a second clamping member (301) disposed on the main body, and an adsorption member (302) disposed on the main body. The second clamping member (301) is used to clamp the battery cell (10); the adsorption member (302) is used to adsorb the battery cell (10), and the adsorption member (302) is elastically connected to the main body.

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