Glue injection assembly for battery pack, battery pack and electric device

Abstract

The application relates to the technical field of batteries, and relates to a glue injection assembly for a battery pack, the battery pack and a power utilization equipment. The battery pack comprises a tray and a battery cell module. The tray comprises a placing cavity enclosed by a bottom plate part and a side wall part. The battery cell module is arranged in the placing cavity. Specifically, the glue injection assembly comprises a support part. The support part is arranged between the battery cell module and the side wall part. A glue injection space is formed between one side of the support part facing the side wall part and the side wall part. The glue injection space is used for filling an adhesive part to bond the support part and the side wall part. The glue injection assembly of the embodiment forms the glue injection space for filling the adhesive part between the side wall of the battery cell module and the side wall part of the tray through the support part. The performance decline problem of the battery pack caused by insufficient support capacity in the later stage of the service life is effectively solved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a glue injection assembly for a battery pack, a battery pack, and an electrical device. Background Technology

[0002] In current battery pack designs, the common solution for filling side gaps is a combination of plastic components and vacuum-compressed foam. This solution fills the gaps and provides support between the cells and the tray by placing vacuum foam between the plastic support and the battery cells.

[0003] However, although this technical solution can effectively solve the side gap problem in the initial stage of the battery pack, some significant problems have emerged in the middle and later stages of the battery pack's lifespan. First, as the battery gradually expands during repeated charging and discharging, the supporting capacity of the vacuum foam gradually weakens and cannot effectively withstand the increasing expansion stress. This will lead to a decline in the cycle performance of the battery pack, seriously affecting its safety and reliability. Utility Model Content

[0004] This application provides a glue injection assembly for a battery pack, a battery pack, and an electrical device, which solves the problem that in the prior art, the use of vacuum foam to support the battery cells and plastic parts can easily lead to a decrease in support capacity and a decline in battery pack performance in the later stages of battery pack use.

[0005] A first aspect of this application provides a glue injection assembly for a battery pack, the battery pack including a tray and a cell module, the tray including a placement cavity formed by a bottom plate portion and a side wall portion, the cell module being disposed within the placement cavity, and the glue injection assembly including:

[0006] A support member is provided between the battery cell module and the side wall portion. An injection space is formed between the side of the support member facing the side wall portion and the side wall portion. The injection space is used to fill the adhesive member to bond the support member and the side wall portion.

[0007] In one possible implementation, the adhesive injection assembly further includes a seal adapted to be disposed between the support and the sidewall portion, wherein the support, the seal, and the sidewall portion enclose an adhesive injection space.

[0008] In one possible implementation, the seal is a flexible structure and is adapted to be pressed between the support and the sidewall portion.

[0009] In one possible implementation, the seal comprises vacuum foam.

[0010] In one possible implementation, the support member has a mounting groove on the side facing the seal, and / or the inner wall of the side wall portion has a mounting groove; the seal is accommodated in the mounting groove and is positioned away from the battery cell module.

[0011] In one possible implementation, the seal includes a connected ring body and an extension, the ring body being at least partially accommodated within the mounting groove, and the ring body forming the injection space with the inner walls of the support and the sidewall portion, respectively, and the extension being located outside the injection space.

[0012] In one possible implementation, the support member is provided with a connecting channel for injecting the adhesive into the injection space and / or venting; the support member includes an injection surface, the mounting groove is located between the injection surface and the side wall portion, and the sealing member is respectively enclosed with the inner walls of the injection surface and the side wall portion to form the injection space, and the first port of the connecting channel is located on the injection surface and communicates with the injection space.

[0013] In one possible implementation, the injection surface is recessed toward the side away from the center of the injection space.

[0014] In one possible implementation, the mounting groove is positioned such that its orthographic projection on the support surrounds the adhesive inlet surface.

[0015] In one possible implementation, the seal includes a ring body and an extension, the ring body forming the injection space with the support and the inner wall of the placement cavity, respectively, and the extension being connected to the side of the ring body opposite to the injection space.

[0016] In one possible implementation, the other side of the support is adapted to be bonded to the battery cell module.

[0017] In one possible implementation, the adhesive comprises at least one of foam, structural adhesive, and thermally conductive adhesive.

[0018] In one possible implementation, the support includes a peripheral sidewall and an adhesive inlet surface, the peripheral sidewall being connected to the adhesive inlet surface, and a second port of the connecting channel being located on the peripheral sidewall.

[0019] In one possible implementation, the connection channel includes an adhesive inlet channel and an outlet channel, and the first port of the adhesive inlet channel and the first port of the outlet channel are spaced apart along the length or width direction of the support member.

[0020] In one possible implementation, the number of the glue injection components is multiple sets, with two sets of the glue injection components located on opposite sides of the cell module.

[0021] In one possible implementation, the support member has a cable groove for accommodating the cables of the battery cell module.

[0022] A second aspect of this application provides a battery pack, comprising:

[0023] Tray, with a placement cavity;

[0024] A battery cell module is disposed within the placement cavity, and the battery cell module is spaced apart from the inner wall of the placement cavity in the width direction and / or length direction.

[0025] As described in any of the above, the glue injection assembly is disposed between the battery cell module and the tray in the width direction and / or length direction of the battery cell module.

[0026] In one possible implementation, one side of the injection assembly is bonded to the cell module and / or the other side of the injection assembly is bonded to the tray.

[0027] In one possible implementation, the tray includes a connected base plate and a side wall portion, the base plate and the side wall portion enclosing the placement cavity, the battery cell module being spaced apart from the side wall portion, and the glue injection assembly being disposed between the battery cell module and the side wall portion.

[0028] In one possible implementation, the tray further includes a partition connected to the base plate and the side wall, and the partition divides the internal space of the tray into a plurality of placement cavities. The glue injection assembly is disposed between the partition and the battery module and / or between the battery module and the side wall.

[0029] A third aspect of this application provides an electrical device, including a glue injection assembly as described in any of the preceding claims or a battery pack as described in any of the preceding claims.

[0030] Implementing the embodiments of this application has the following beneficial effects:

[0031] The adhesive injection assembly of this embodiment creates an adhesive injection space between the sidewall of the cell module and the sidewall of the tray by setting a support member, which is used to fill the adhesive component. This effectively solves the problem of performance degradation caused by insufficient support capacity in the later stages of battery pack life. Compared with the traditional vacuum compression foam solution, the adhesive injection assembly of this embodiment adds an adhesive component within the adhesive injection space, providing more durable and reliable support after bonding. This improves the cycle performance degradation caused by material decay of vacuum foam, significantly enhancing the safety and reliability of the battery pack. Attached Figure Description

[0032] 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A perspective view of the battery pack in an embodiment of the present invention is shown;

[0034] Figure 2 A partial cross-sectional schematic diagram of the battery pack in an embodiment of the present invention is shown;

[0035] Figure 3 An exploded view of the dispensing assembly in an embodiment of this utility model is shown;

[0036] Figure label:

[0037] 1-Battery pack; 10-Injection molding assembly;

[0038] 100 - Support component; 110 - Mounting groove; 120 - Peripheral sidewall; 121 - Inlet; 122 - Outlet; 130 - Inlet surface; 131 - Inlet hole; 132 - Outlet hole; 140 - Wire groove;

[0039] 200 - Seal; 210 - Ring body; 220 - Extension;

[0040] 300-Injection space;

[0041] 20-Cell module;

[0042] 30-Tray; 31-Placement cavity; 32-Bottom plate; 33-Side wall; 34-Divider. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In current battery pack designs, the common solution for filling side gaps is a combination of plastic components and vacuum-compressed foam. This solution fills the gaps and provides support between the cells and the tray by placing vacuum foam between the plastic support and the battery cells.

[0045] However, while this technical solution effectively addresses the side gap issue in the initial stages of battery pack development, it reveals several significant problems in the later stages of battery pack lifespan. First, as the battery gradually expands during repeated charge and discharge cycles, the supporting capacity of the vacuum foam weakens, becoming unable to effectively withstand the increasing expansion stress. This leads to a decline in the battery pack's cycle performance, severely impacting its safety and reliability. Second, the high cost of vacuum-compressed foam increases the overall manufacturing cost of the battery pack.

[0046] To solve these problems, see Figures 1 to 3 As shown, this utility model embodiment provides a glue injection assembly 10 for a battery pack. The battery pack 1 includes a tray 30 and a cell module 20. The tray 30 includes a placement cavity 31 formed by a bottom plate portion 32 and a side wall portion 33. The cell module 20 is disposed in the placement cavity 31. Specifically, the glue injection assembly 10 includes a support member 100, which is disposed between the cell module 20 and the side wall portion 33. A glue injection space 300 is formed between the side of the support member 100 facing the side wall portion 33 and the side wall portion 33. The glue injection space 300 is used to fill adhesive to bond the support member 100 and the side wall portion 33.

[0047] The glue injection assembly 10 of this embodiment forms a glue injection space for filling the adhesive component between the side wall of the cell module 20 and the side wall 33 of the tray 30 by setting the support member 100. This effectively solves the problem of performance degradation caused by insufficient support capacity in the later stages of the battery pack 1's service life. Compared with the traditional vacuum compression foam solution, the glue injection assembly 10 of this embodiment adds an adhesive component within the glue injection space 300, providing more durable and reliable support after bonding. This improves the cycle performance degradation caused by material decay of vacuum foam and significantly enhances the safety and reliability of the battery pack 1.

[0048] The adhesive injection assembly of this embodiment forms a sealed adhesive injection space 300 by setting a sealant 200 between the support 100 and the tray 30. This design greatly improves the injection efficiency of the adhesive, ensuring that the adhesive can be injected evenly and effectively within the adhesive injection space 300, thereby achieving a stable connection between the cell module 20 and the tray 30 after curing. This not only provides more stable support for the battery pack 1, but also enhances the structural integrity and safety of the entire battery pack 1.

[0049] Specifically, the design of the injection assembly 10 relies on a one-time injection of the adhesive, making the filling process simple and efficient. After curing, the adhesive provides continuous and reliable support, effectively maintaining the connection strength between the cell module 20 and the tray 30 throughout the entire lifespan of the battery pack 1. Compared to traditional vacuum compression foam solutions, this avoids the problem of decreased support capacity due to material degradation over time. Therefore, the injection assembly 10 not only significantly improves the safety and reliability of the battery pack but also helps reduce overall manufacturing costs, which is particularly important for enhancing the battery pack's market competitiveness.

[0050] It should be noted that, for reference Figure 2 As shown in the figure, the X direction can be the thickness direction of the cell module 20, the Y direction can be the length direction of the cell module 20, and the Z direction can be the width direction of the cell module 20. When the cell module 20 has a rectangular structure, the X, Y, and Z directions are mutually perpendicular. Of course, in other embodiments, the X, Y, and Z directions can also be adjusted according to the actual structure of the cell module 20, such as any two directions forming a certain angle, which is not limited here. In addition, in this embodiment, since the bottom plate portion 32 and the side wall portion 33 enclose and form the placement cavity 31, the inner wall of the side wall portion 33 can be the side wall surface of the side wall portion 33 facing the placement cavity 31.

[0051] Specifically, the glue injection assembly 10 also includes a seal 200, which is adapted to be disposed between the support 100 and the side wall portion 33, and the support 100, the seal 200 and the side wall portion 33 enclose a glue injection space 300.

[0052] By using the seal 200, overflow of the adhesive during the injection process can be effectively prevented, solving the problem of glue overflow that easily occurs in the glue injection process in the prior art. This is particularly important because glue overflow is often one of the main reasons why glue injection supports for the battery cell module 20 and tray 30 were not used in the past. At the same time, the design of the sealing structure also ensures that the adhesive can be accurately injected into the predetermined glue injection space 300, avoiding resource waste caused by glue leakage, improving production efficiency and reducing actual material costs.

[0053] It should be noted that in the adhesive injection assembly 10 of this embodiment, the injection method of the adhesive is flexible and can be selected according to specific process requirements and the characteristics of the adhesive. The adhesive can be injected from the outside of the adhesive injection space 300. This method is easy to implement before initial installation and also helps to ensure that the adhesive is evenly filled into the adhesive injection space to form a strong connection.

[0054] Furthermore, when installing the adhesive injection assembly 10 between the cell module 20 and the tray 30, the adhesive can be directly injected into the adhesive injection space 300 and self-cured after the assembly is installed. This design can reduce the number of operation steps during installation, improve assembly efficiency, and ensure that the adhesive forms a high-strength bond between the adhesive and the cell module 20 and the tray 30 after curing.

[0055] The method for injecting the adhesive can be selected based on its flowability and viscosity. When using an adhesive with low flowability, it is recommended to pre-inject the adhesive into the injection space 300 to ensure that the adhesive can effectively fill the injection space 300. This method ensures that the adhesive adheres to the surfaces of the cell module 20 and the tray 30 before curing, thereby improving the subsequent bonding strength.

[0056] In contrast, when choosing adhesives with higher fluidity, it is more suitable to inject the adhesive into the injection space 300 after the injection assembly 10 is assembled with the cell module 20 and the tray 30. This method allows the adhesive to self-level and adapt to the shape of the injection space, ensuring a perfect fit, while reducing the problems of voids or uneven distribution of the adhesive during the curing process.

[0057] By flexibly adjusting the injection method and characteristics of the adhesive components, various environmental and pressure changes that may be encountered during the use of the battery pack can be effectively addressed, further improving the performance of the injection assembly 10 and ensuring a stable connection between the cell module 20 and the tray 30, thereby providing lasting support throughout the entire life cycle of the battery pack 1.

[0058] In one embodiment, the seal 200 is a flexible structure and is adapted to be pressed between the support 100 and the sidewall portion 33. Through this design, the elastic properties of the seal 200 can effectively accommodate minor differences between the support 100 and the tray 30, thereby achieving effective sealing of gaps when assembling the adhesive injection assembly 10. This characteristic ensures the sealing of the adhesive injection space 300, preventing overflow of the adhesive during injection, thus improving the overall process stability and reliability.

[0059] The flexible seal 200 is designed with multiple adaptability considerations. First, the material and shape of the seal 200 allow it to undergo appropriate elastic deformation during compression, thereby filling all gaps between the support 100 and the tray 30. This elastic sealing characteristic is crucial for ensuring the sealing of the adhesive injection space 300. Specifically, when the seal 200 is compressed, its shape changes, effectively sealing any gaps that may appear and preventing any adhesive from leaking out of the adhesive injection space 300.

[0060] Furthermore, this flexible seal 200 provides greater adaptability when the injection assembly 10 is applied to battery packs 1 of different specifications. Specifically, the seal 200 can deform appropriately according to the gap between the cell module 20 and the tray 30 to maintain a good sealing effect. This means that in practical applications, even if the size or design of the battery pack changes, the seal 200 can still ensure that the injection space 300 remains sealed, thereby improving the versatility and applicability of the assembly.

[0061] It is worth noting that the material selection and structural design of the seal 200 directly affect its flexibility. Common flexible materials such as silicone and rubber can be used as manufacturing materials for the seal 200. These materials not only possess good elasticity and toughness but are also resistant to chemical corrosion, making them suitable for contact with various adhesive components. The selection and design of the materials enable the seal 200 to maintain good sealing performance and stability even when faced with dynamic changes in the adhesive components and fluctuations in the working environment.

[0062] In one embodiment, the seal 200 is vacuum foam.

[0063] Using vacuum foam as the main material for the sealing element 200 has several advantages. First, vacuum foam has excellent sealing performance. Because it contains gas, this gas can be compressed and restored under external force, thus forming an effective seal between the support 100 and the tray 30. This ensures the sealing of the adhesive injection space 300, preventing the adhesive from overflowing and also preventing the external environment from affecting the internal structure due to the opening.

[0064] Meanwhile, the lightweight design of the vacuum foam improves the sealing effect without significantly affecting the overall weight of the battery pack 1, which has a positive effect on improving the performance and energy density of the battery pack 1. Furthermore, the flexibility of the vacuum foam allows it to adapt to minor differences between the support 100 and the tray 30 during the pressing process, thereby further optimizing the sealing effect.

[0065] In this embodiment, the actual assembly sequence is as follows: First, the seal 200 is bonded to the support 100. Then, the support 100 with the seal 200 bonded to it is bonded to the side wall of the battery module 20. At this time, the support 100 not only provides necessary mechanical support for the battery module 20, but also forms a preliminary sealed environment through the seal 200 to prevent external substances from entering the battery pack.

[0066] Next, as the battery module 20 is inverted, the entire assembly is placed into the tray 30. At this time, the seal 200 is in a compressed state. Under pressure, the seal 200 retains a slight elasticity to accommodate the gap between the support 100 and the tray 30.

[0067] Once the support 100 and tray 30 are installed, the installer will use a tool to cut an opening in the seal 200, thus breaking its compressed state. This crucial step allows the vacuum foam to rapidly expand from its compressed state, filling the gap between the support 100 and tray 30 and creating an effective seal. Through this series of assembly steps, the seal 200 can be efficiently connected, and the sealing performance of the expanded vacuum foam ensures the sealing effect of the seal 200.

[0068] In one embodiment, the support member 100 has a mounting groove 110 on the side facing the seal member 200, and / or the inner wall of the side wall portion 33 has a mounting groove 110; the seal member 200 is accommodated in the mounting groove 110 and is positioned in a direction away from the battery cell module 20.

[0069] By providing a mounting groove 110 on the support 100, the seal 200 can be precisely positioned easily. Specifically, the presence of the mounting groove 110 allows the seal 200 to be more securely embedded, preventing its position from shifting due to external forces during assembly and operation. The advantage of this design is that when pressure is applied to the seal 200 during the curing process of the adhesive, the mounting groove 110 effectively fixes the seal 200 in the predetermined position, minimizing adhesive overflow that may occur due to improper seal positioning, thereby ensuring the sealing and cleanliness of the adhesive injection space 300. In embodiments using vacuum foam, it also facilitates limiting the expansion of the seal 200, preventing the seal 200 from detaching.

[0070] Furthermore, the mounting groove 110 recessed on one side surface of the support 100 further reduces the overall thickness of the injection assembly 10. This design not only effectively saves space but also optimizes the overall structure of the assembly, making it easier to install and integrate. The smaller thickness allows the entire injection assembly 10 to have better compatibility when used in different battery packs, especially in space-constrained environments, improving the overall adaptability and flexibility of the device.

[0071] It should be noted that the shape, size, and depth of the mounting groove 110 can be adjusted and optimized according to actual design requirements to ensure that the seal 200 can be installed while meeting the need for a tight fit without causing unnecessary expansion or deformation. In specific implementations, different edge designs, such as circular, square, or other polygonal designs, can be selected to facilitate the flexible embedding and fixing of the seal 200. Such a design not only improves the assembly efficiency between components but also helps to enhance the overall effect of adhesive application. In some embodiments, the mounting groove 110 can also be located on the inner wall of the side wall portion 33, thereby also positioning the seal 200; details will not be elaborated here.

[0072] Furthermore, the seal 200 includes a ring body 210 and an extension 220 connected to each other. The ring body 210 is at least partially housed in the mounting groove 110, and the ring body 210 forms an injection space 300 by enclosing the inner walls of the support 100 and the side wall portion 33, respectively. The extension 220 is located outside the injection space 300.

[0073] Because the extension 220 extends away from the injection space 300, it makes it easier for operators to install and remove the seal 200. Specifically, operators can use tools to clamp the extension 220 for positioning and placement, thereby accurately placing the seal 200 into the mounting groove 110. This avoids potential damage or deformation to the clamping ring body 210, ensuring the integrity and sealing performance of the seal 200, thus significantly improving the yield rate of the assembly. This design not only improves work efficiency but also optimizes the operator's user experience.

[0074] Furthermore, when the seal 200 needs to be removed, the positioning of the extension 220 on the outside of the ring body 210 helps the operator easily clamp and remove it from the mounting slot 110. This design also takes into account the ease of operation, reducing the trouble and risks that may occur during disassembly, making subsequent maintenance and replacement processes more efficient and smooth.

[0075] When vacuum foam is used as the sealant 200, after the sealant 200 is installed between the battery module 20 and the side wall portion 33 along with the support member 100, the vacuum foam can also be expanded by cutting the extension portion 220.

[0076] Furthermore, the shape and material of the extension 220 can be diversified according to actual needs. For example, the shape of the extension 220 can be flat, curved, or other shapes to adapt to different assembly scenarios, and its surface can be treated as needed, such as adding anti-slip textures or coatings to enhance friction during clamping, thereby improving stability and safety during use. Through these design optimizations, the extension 220 not only improves the ease of assembly of the seal 200, but also enhances the reliability and service life of the product to a certain extent.

[0077] In another embodiment, the seal 200 includes a ring body 210 and an extension 220. The ring body 210 surrounds the inner walls of the support 100 and the placement cavity 31 to form an injection space 300. The extension 220 is connected to the side of the ring body 210 away from the injection space 300.

[0078] Compared to the previous embodiment, where the seal 200 relied on the mounting groove 110 for positioning, this embodiment eliminates the mounting groove 110 and instead relies on compression and / or bonding between the support 100 and the inner wall of the placement cavity 31 to achieve the positioning of the seal. This structure simplifies the design process, reduces the number of components, and makes the overall structure simpler. Through optimized design, the processing technology of the support 100 is also simplified, thereby reducing manufacturing costs.

[0079] In one embodiment, the other side of the support 100 is adapted to be bonded to the cell module 20. This design not only improves the connection strength between the cell module 20 and the injection assembly 10, but also reduces the difficulty of the assembly process, providing convenience for subsequent assembly and maintenance.

[0080] By bonding the support member 100 to the cell module 20, a stable and reliable connection structure is formed. The support member 100 creates a strong connection interface with the cell module 20. This high-strength bond effectively withstands mechanical vibrations and temperature changes during operation, helping to ensure the overall performance and safety of the cell module 20. Furthermore, the bonding method is simple and easy to operate, avoiding the complex installation steps associated with screws and other fasteners, reducing assembly difficulty, and improving production efficiency.

[0081] In the specific assembly process, the operator can first attach the adhesive injection component 10 to the outer surface of the cell module 20 using the support 100. This step is simple and effective, allowing the adhesive injection component 10 to be quickly fixed to the cell module 20. In this process, the bonding method not only reduces the gap between components, thereby improving the sealing of the connection, but also avoids potential loosening problems caused by traditional mechanical connections.

[0082] Subsequently, the battery cell module 20 and the glue injection assembly 10 can be installed together within the tray 30. At this point, the importance of the sealant 200 during the connection process becomes apparent; it effectively supports the support member 100 and the tray 30, forming the glue injection space 300. Through this structural design, the glue injection space 300 is formed stably and safely, thus providing a reliable environment for subsequent glue injection operations.

[0083] It should be noted that the bonding material between the support component 100 and the battery module 20 can be selected according to actual needs. For example, common adhesives include epoxy resin, polyurethane, and acrylic. These materials can maintain good bonding strength under different temperatures and environments and have strong environmental resistance.

[0084] In one embodiment, the injection assembly 10 is disposed between the cell module 20 and the tray 30 along the thickness direction of the cell module 20. This design takes into account the expansion phenomenon faced by the cell module 20 during operation. When the cell module 20 is in operation, its internal chemical reactions and environmental factors (such as temperature changes) will cause dimensional changes in its thickness direction. If this expansion phenomenon is not effectively supported and controlled, it may affect the overall structural stability and performance of the battery pack.

[0085] By arranging the glue injection assembly 10 between the cell module 20 and the tray 30, the necessary support force can be provided in the expansion direction of the cell module 20. This support can not only effectively resist the expansion pressure of the cell module 20 under working conditions, but also balance the stress that may be generated inside the module, thereby extending the service life of the cell module 20 and improving the safety of the overall battery pack.

[0086] In addition, the presence of the injection assembly 10 can effectively prevent the cell module 20 from directly contacting the tray 30 due to expansion, thereby providing support for the cell module 20 and ensuring the performance consistency of the cell module 20.

[0087] In some alternative embodiments, the injection assembly 10 can also be located between the bottom of the cell module 20 and the tray 30, providing the necessary support. For example, for modules with strong bottom load-bearing capacity, a bottom support design can effectively distribute the load and reduce additional stress concentration caused by gravity. Regardless of the arrangement, the injection assembly 10 ensures the stability of the battery pack during operation and prevents structural failure due to expansion.

[0088] Specifically, the adhesives include at least one of foam adhesive, structural adhesive, and thermally conductive adhesive. Each of these three adhesives possesses unique properties and advantages, capable of meeting different application scenarios and requirements. The selection of adhesives is crucial for improving the overall performance, structural stability, and thermal management effectiveness of the battery pack 1.

[0089] As a type of adhesive, expanded polystyrene foam has the main advantages of being lightweight and having good cushioning properties. The foam structure can effectively absorb impacts and vibrations, reducing stress concentration at the connection between the cell module 20 and the tray 30, thereby improving the overall system's shock resistance. Furthermore, the low thermal conductivity of expanded polystyrene foam allows it to provide good insulation in certain situations, preventing overheating of the battery module due to heat conduction during operation.

[0090] Structural adhesives provide a high-strength bond, suitable for applications requiring heavy loads or operating in high-temperature environments. In addition to excellent adhesion, structural adhesives also offer some resistance to external stresses, making the interfaces between connected components more robust and durable. When the battery module 20 deforms under high loads or other external conditions during use, the structural adhesive effectively maintains the stability of the connection, thereby ensuring the safety and reliability of the system.

[0091] The application of thermally conductive adhesive is mainly concentrated in thermal management systems, where its primary function is to effectively dissipate the heat generated by the battery module 20 during operation. By using thermally conductive adhesive, the heat from the battery module 20 can be rapidly conducted to the tray 30 or other cooling devices, thereby preventing the module from experiencing performance degradation due to overheating. While providing efficient heat dissipation, the thermally conductive adhesive also functions as an adhesive, making the connection between the battery module 20 and the tray 30 more secure. Furthermore, the fluidity and filling capacity of the thermally conductive adhesive allow it to better cover and fill the contact surfaces, forming a more complete thermal contact interface.

[0092] It should be noted that in practical applications, the selection and combination of adhesives can be adjusted according to specific design requirements. For example, if the battery pack 1 operates under significant dynamic loads, a structural adhesive might be preferred for bonding. Conversely, when lightweighting and cushioning are emphasized, expanding foam might be more suitable. In such cases, the combination of the three adhesives can be configured according to actual needs, such as using both expanding foam and thermally conductive adhesive simultaneously to achieve the dual benefits of vibration damping and thermal management.

[0093] By properly selecting and matching adhesive components, not only can the strength and stability of the bonded parts be improved, but the thermal management performance of battery pack 1 can also be effectively improved, ensuring that it can maintain a good working condition under different working conditions, thereby improving the overall performance and safety of battery pack 1.

[0094] Specifically, the support member 100 is provided with a connecting channel for injecting adhesive and / or venting into the glue injection space 300; the support member 100 includes a glue inlet surface 130, a mounting groove 110 is located between the glue inlet surface 130 and the side wall portion 33, and the sealing member 200 is respectively enclosed with the inner walls of the glue inlet surface 130 and the side wall portion 33 to form the glue injection space 300, and the first port of the connecting channel is located on the glue inlet surface 130 and communicates with the glue injection space 300.

[0095] By providing a connecting channel on the support member 100, liquid adhesive can be easily injected into the injection space 300. Specifically, when the adhesive is injected into the injection space 300 through the connecting channel, the design of the connecting channel ensures that the adhesive fills the entire space evenly and quickly. This design avoids the air pocket phenomenon that may occur during conventional adhesive injection, ensuring that the adhesive can fill the injection space 300, thereby maximizing the curing effect and support strength of the adhesive. After the adhesive has cured, the resulting support structure can significantly improve the overall stability of the cell module 20. At the same time, the adhesive injected into the injection space 300 can smoothly enter through the first port of the connecting channel, thereby improving the overall efficiency of adhesive injection. The advantage of this structural design is its simplicity and efficiency. Through integrated design, the support member 100 can functionally support the injection of adhesive while maintaining a good sealing effect, thus strengthening the overall sealing performance of the entire battery pack 1.

[0096] Furthermore, the connecting channel allows for gas venting simultaneously with the injection of the adhesive. During rapid injection, air at the top of the injection space 300 is forced out and expelled through the connecting channel. This bidirectional channel design not only improves the injection efficiency of the adhesive but also helps prevent the formation of air bubbles, thereby ensuring that the adhesive achieves the required physical properties after curing.

[0097] Furthermore, when a low-flow adhesive is used for the bonding component, the adhesive injection assembly 10 can be assembled by first placing the adhesive within the space formed by the sealant 200 and the support 100, and then installing the adhesive injection assembly 10 and the adhesive together between the cell module 20 and the tray 30. In this embodiment, the process of installing the adhesive injection assembly 10 and the adhesive together between the cell module 20 and the tray 30 simplifies the operation steps and reduces the risk of adhesive leakage. It is worth noting that the high viscosity of the adhesive may cause significant resistance during conventional injection, reducing injection efficiency. Therefore, placing the adhesive within the space enclosed by the sealant 200 and the support 100 beforehand effectively alleviates this problem, ensuring that the adhesive is not squeezed out of the assembly during filling. This also provides favorable conditions for the subsequent curing process, allowing the adhesive to perform its proper bonding and support effects within the sealed space.

[0098] At this stage, the connecting channel can be used solely for venting, helping to promptly remove air from the injection space. This design further expands the function of the connecting channel, ensuring effective air removal before injection even when the adhesive has low flowability, thereby reducing uneven stress application during curing caused by air pockets. When the air is expelled, the adhesive can make fuller contact with the contact surface, forming a stronger bond.

[0099] In this embodiment, the seal 200 is provided to ensure the sealing performance of the injection space 300, and the seal 200 is preferably an annular closed structure. This design can effectively prevent leakage of the adhesive during the injection process, ensuring that the liquid adhesive is completely injected into the injection space 300. The material and structural design of the seal 200 also need to consider its temperature resistance and pressure resistance to adapt to the special operating environment of the battery pack.

[0100] In some alternative embodiments, the connecting channel can also be located on the seal 200, in which case its structure is non-closed. In this arrangement control, it is preferable that the opening of the seal 200 faces outward so that, during the injection of the adhesive, gravity allows the adhesive to quickly and evenly fill the injection space 300. Simultaneously, the location of the connecting channel on the seal 200 also makes the venting process more efficient, providing a favorable environment for the smooth flow of the adhesive.

[0101] The advantage of this design lies in the fact that by setting connection channels on the sealant 200, it simplifies the overall structure, reduces the number of components, and decreases the complexity of the assembly process and the risk of potential adhesive leakage while maintaining good sealing performance. The presence of connection channels not only improves the injection efficiency of the adhesive but also effectively controls air bubbles that may form during the injection process, thereby further ensuring the curing effect and final support performance of the adhesive.

[0102] Furthermore, the glue inlet surface 130 is recessed towards the side away from the center of the glue injection space 300.

[0103] This design makes the combined structure between the support member 100 and the side wall portion 33 more compact and effectively reduces the overall space occupied by the battery pack 1. In the thickness direction of the cell module 20, the support member 100 can be as close as possible to the side wall portion 33, optimizing the structural layout of the battery pack 1.

[0104] Specifically, the stepped structure formed between the glue inlet surface 130 and the mounting groove 110 not only improves the overall compactness of the assembly but also allows for precise positioning of the seal 200 via the mounting groove 110. This stepped design plays a positive role in several aspects. First, it ensures that the seal 200 is not easily displaced during installation, thereby improving the stability of the seal and enhancing the sealing performance of the glue injection space 300. Second, this structure also simplifies the manufacturing and assembly process.

[0105] Furthermore, through a well-designed recessed surface, the injection surface 130 can guide the filling adhesive during injection, ensuring that the filler adhesive flows smoothly into the injection space 300. This flowability optimization further improves the distribution of the filler adhesive within the injection space, avoids the formation of air bubbles, and allows the filler adhesive to form a more uniform and stable bond after curing, thereby improving the overall performance and service life of the battery pack 1.

[0106] In one embodiment, the mounting groove 110 is positioned such that its orthographic projection on the support member 100 surrounds the adhesive surface 130.

[0107] This design layout allows the seal 200 to be accurately accommodated within the mounting groove 110 during installation, effectively ensuring its uniform distribution around the adhesive injection surface 130. This design not only optimizes the positioning and fixation of the seal 200, but also improves the sealing performance and reliability of the adhesive injection space 300 throughout the application of the battery pack 1.

[0108] When the seal 200 is placed within the mounting groove 110, its circumferential design ensures an effective sealing contact between the sealing surface and the injection surface 130. This tight fit effectively prevents leakage of the filler during injection and also prevents external environmental interference with the injection space 300. The excellent sealing performance of the seal 200 is crucial for ensuring reliable bonding of the filler after curing, thus improving the overall stability and safety of the battery pack 1.

[0109] Specifically, the support member 100 includes a peripheral sidewall 120 and an adhesive inlet surface 130, the peripheral sidewall 120 is connected to the adhesive inlet surface 130, and the second port of the connecting channel is located on the peripheral sidewall 120.

[0110] In this embodiment, the peripheral sidewall 120 avoids the glue-dispensing space 300, thus providing a convenient connection method for external glue-dispensing equipment. Specifically, the connection design between the structure of the peripheral sidewall 120 and the support member 100 provides flexibility for the access of external glue-dispensing equipment. This design allows the glue-dispensing equipment to be directly connected to the peripheral sidewall 120, facilitating operation and adjustment of the equipment during the glue-dispensing process and improving the efficiency of equipment use.

[0111] Furthermore, the positioning of the peripheral sidewall 120 relative to the adhesive injection space 300 effectively avoids interference from external materials that may occur during the injection of the bonded parts. Simultaneously, it ensures the stability and compatibility of external adhesive injection equipment, enabling efficient adhesive injection processes in production lines or assembly stages. The overall design of the support component 100 also takes into account the ease of operation for personnel during work, reducing the complexity of installation and use.

[0112] Furthermore, the design of the injection surface 130 provides a direct channel for the injection of the adhesive, allowing it to flow smoothly through the injection surface 130 into the injection space 300 during injection. This design ensures smooth flow of the adhesive at the injection surface 130, reducing injection difficulties that may arise due to adhesive resistance. During the flow of the adhesive, the sealed environment formed by the injection surface 130 and the sealing element 200 ensures that gas can be effectively discharged during injection, preventing the formation of air bubbles, thereby improving the strength and stability of the final cured structure.

[0113] Specifically, the connecting channel includes an inlet channel and an outlet channel, and the first port of the inlet channel and the first port of the outlet channel are spaced apart along the length or width direction of the support member 100.

[0114] The advantage of this design is that by increasing the distance between the first port of the glue inlet channel and the first port of the glue outlet channel, the filler glue can fill the glue injection space 300 with higher quality during the injection process. Due to the selected design scheme, the uniform distribution of the filler glue is more significant while ensuring that the glue injection amount is not excessive, thus effectively avoiding the hollow phenomenon that may occur in conventional glue injection processes.

[0115] By separating the glue inlet and outlet channels, turbulence and cross-flow of the glue-filled adhesive components can be avoided during the glue injection process. This effectively reduces the encapsulation of gas, thereby lowering the risk of air bubbles in the glue injection space 300. Improved glue injection quality enhances the bond strength between the glue-filled adhesive components and the battery cell module 20, ensuring the stability and safety of the battery cell module in subsequent operations. Furthermore, maintaining good venting during filling facilitates the rapid and safe removal of excess glue, reducing residue problems caused by overfilling.

[0116] In this design, the spacing between the first port of the glue inlet channel and the first port of the discharge channel not only technically ensures a smooth glue injection process but also improves venting efficiency from a process perspective. When the glue-filled adhesive flows into the glue injection space 300 through the glue inlet channel, air and excess glue are forced out through the discharge channel, ensuring the controllability of the entire filling process. This dual-channel design allows the glue-filled adhesive to flow separately from the gas, reducing the sources of air bubble generation and further improving the filling effect and support performance. For example, in some embodiments, the first port of the glue inlet channel and the first port of the discharge channel are spaced apart along the length of the support member 100 to create a larger distance between the two ports, thereby improving the uniformity of glue injection and the venting effect. In another embodiment, the first port of the glue inlet channel and the first port of the discharge channel are spaced apart along the width of the support member 100. Preferably, the first port of the glue inlet channel is located below the first port of the discharge channel. This arrangement allows the adhesive to be closer to the first port of the glue inlet channel under gravity during glue injection, facilitating venting and glue discharge.

[0117] Specifically, the first port of the glue inlet channel is a glue inlet hole 131 provided on the glue inlet surface 130, which is used to inject glue into the glue injection space 300; the second port of the glue inlet channel is a glue inlet 121 provided on the peripheral sidewall 120, which is used to input the adhesive into the glue inlet channel from the outside; the first port of the discharge channel is a discharge hole 132 provided on the glue inlet surface 130, which is used to discharge excess glue and / or air out of the glue injection space 300; the second port of the discharge channel is a discharge outlet 122 provided on the peripheral sidewall 120.

[0118] By providing the inlet 121, users can easily feed the adhesive into the adhesive channel, which aims to improve the convenience and efficiency of the adhesive injection process. After the adhesive is injected into the adhesive channel through the inlet 121, it will flow naturally under certain pressure or gravity, eventually entering the pre-enclosed injection space 300 through the inlet hole 131. This design achieves efficient delivery of the adhesive from the injection port to the injection space 300, ensuring that the adhesive reaches the designated position accurately and quickly.

[0119] With this structural design, the glue inlet channel effectively reduces the injection resistance of the bonded parts, avoiding potential problems such as air bubble formation and uneven filling, thereby helping to improve the adhesion and stability between the adhesive and structural components. This optimization of fluid dynamics not only ensures the smooth flow of the bonded parts but also improves the efficiency of the overall glue injection process, reducing time delays caused by insufficient glue flowability in traditional glue injection processes.

[0120] Furthermore, the placement of the glue inlet 131 and glue outlet 121 in the support member 100 provides greater flexibility in the glue injection process. In actual operation, the positions of the glue inlet 131 and glue outlet 121 allow for adjustments and optimizations to suit different types of adhesives and varying process requirements, thus adapting to the different flow characteristics and injection conditions of various adhesives. This enables compatibility with multiple adhesive materials and helps meet the specific requirements of different processes.

[0121] Specifically, the connecting channel includes a discharge channel for venting air outward toward the glue injection space 300. The support member 100 has a discharge hole 132 and a discharge outlet 122 respectively connected to the discharge channel. The discharge hole 132 is located on the glue injection surface 130, and the discharge outlet 122 is located on the peripheral sidewall 120.

[0122] By setting up a discharge channel, the problem of gas emission during the adhesive injection process can be effectively solved. After the adhesive is injected into the injection space 300, the volume of this space will change as the adhesive is continuously added, resulting in a decrease in the volume of gas inside. At this time, the gas in the injection space 300 will flow into the discharge channel through the discharge hole 132 and finally be discharged from the outside of the support 100 through the discharge outlet 122, thereby ensuring that the adhesive can fully fill the injection space 300 without uneven filling or the generation of local voids due to the presence of gas.

[0123] The configuration of the discharge hole 132 and the discharge outlet 122 effectively improves gas discharge efficiency, especially in the initial stage of adhesive injection. Since there is relatively more gas in the space at this time, selectively guiding the gas outward through the discharge hole 132 shortens the adhesive injection time and thus improves the overall efficiency of the adhesive injection operation. Furthermore, this venting structure design reduces the formation of air bubbles that may result from the mixing of adhesive and gas, ensuring the overall sealing performance and strength of the adhesive injection space 300 during the injection process.

[0124] It is worth mentioning that the arrangement of the discharge holes 132 and discharge outlets 122 prioritizes a channel layout that facilitates gas flow, reducing potential resistance during gas discharge. Furthermore, the number and distribution of the discharge holes 132 can be flexibly designed; for example, multiple discharge holes 132 can be provided to improve exhaust speed and efficiency. Specifically, the multiple discharge holes 132 can be two, three, or more; this design does not impose a single limitation. By providing multiple discharge holes, not only can the gas discharge rate be increased, but localized gas accumulation can also be avoided during the dispensing process, improving the flowability of the bonded parts within the entire dispensing space, thereby enhancing the overall dispensing effect.

[0125] In a preferred embodiment, the placement of the inlet hole 131 and the outlet hole 132 is of significant technical importance. Specifically, they are located at opposite ends of the support member 100 along its length. This design aims to optimize the injection and venting of the adhesive, ensuring sufficient flow and uniform distribution of the adhesive within the injection space 300.

[0126] First, the injection port 131 is located at one end of the support member 100, ensuring that the adhesive can quickly enter the injection space 300 during injection. Due to the fluidity of the adhesive, the injection port 131, located near the injection port 121, effectively propels the adhesive to areas away from the injection port 121, thereby achieving rapid and uniform filling of the entire injection space 300. This arrangement minimizes the risk of air bubble formation during injection and avoids unevenness caused by adhesive stagnation in certain areas. This design improves the overall injection efficiency of the adhesive, ensuring rapid filling of the injection space in a short time.

[0127] Meanwhile, the discharge hole 132 is located at the other end of the support 100, directly opposite the glue inlet hole 131, forming a highly efficient channel for adhesive injection and gas venting. During adhesive injection, the open state of the discharge hole 132 allows excess gas in the injection space to be quickly discharged, thus preventing the formation of air bubbles or voids on the adhesive surface. This positioning effectively enhances the gas venting pathway, ensuring that gas during the injection process does not obstruct the flow of the adhesive, allowing the adhesive to more fully fill the injection space 300. This design significantly improves the quality of the glue injection, ensuring the structural strength and sealing effect of the glued component.

[0128] Furthermore, the relative arrangement of the inlet hole 131 and the outlet hole 132 provides a more ideal fluid flow line for the entire adhesive injection process, resulting in excellent hydrodynamic characteristics. When the adhesive flows in through the inlet hole 131, its flow velocity and trajectory help to effectively convert applied external forces (such as pressure) into internal flow, making the delivery process of the adhesive smoother. At the same time, the presence of the outlet hole 132 allows gas to be discharged with higher efficiency, further improving the filling quality of the adhesive.

[0129] Furthermore, this design approach is applicable to various types of adhesives, enabling effective implementation under diverse operating conditions. For instance, for both low-viscosity and high-viscosity adhesives, the dispensing experience can be optimized by varying the injection speed and gas emission rate, providing significant flexibility for practical operation.

[0130] Of course, in some embodiments, the arrangement direction of the glue inlet 131 and the outlet 132 can be selected to be vertical. Specifically, the glue inlet 131 can be located near the lower side of the support member 100, while the outlet 132 is located near the upper side of the support member 100. This design makes full use of the effect of gravity, allowing the adhesive to flow more smoothly into the glue injection space 300 during the injection process.

[0131] In particular, gravity helps reduce the injection resistance of the adhesive. The lower position of the injection port 131 allows the adhesive to flow naturally along the direction of gravity during injection, ensuring that the adhesive can quickly and evenly fill the entire injection space 300, reducing the problem of uneven filling caused by air bubbles obstructing injection. In addition, with the assistance of gravity, low-viscosity adhesives can achieve higher fluidity during flow, thereby enhancing injection efficiency and further improving filling quality.

[0132] Meanwhile, the vent hole 132 is located on the upper side of the support member 100. This arrangement facilitates the effective discharge of gas from the injection space 300. Its upper position allows gas to rise smoothly during the injection of the adhesive and escape through the vent hole 132 in a timely manner, avoiding gas stagnation. This venting design minimizes gas interference in the adhesive, maintains efficient flow of the adhesive, and ensures a smooth and high-quality completion of the injection process.

[0133] Regarding the orifice design, the diameter of the discharge orifice 132 can be set larger than the diameter of the injection orifice 131 to allow gas to escape quickly and effectively. This design logic is based on fluid dynamics principles. When gas encounters less resistance during the injection of the adhesive, the venting process is accelerated. Furthermore, during high-flow-rate injection, the relatively small diameter of the injection orifice 131 prevents blockage. This design ensures that the adhesive can smoothly fill the injection space 300, significantly reducing the risk of air bubble formation and the possibility of uneven filling.

[0134] Specifically, there are multiple sets of glue injection assemblies 10, with two sets of glue injection assemblies 10 located on opposite sides of the cell module 20. This design effectively improves the stability and strength of the cell module 20, ensuring that the force it bears during operation is evenly distributed, preventing structural deformation or damage caused by uneven stress. By symmetrically arranging two sets of glue injection assemblies 10, not only can stable support force be provided to the cell module 20 in the linear direction, but it can also effectively overcome externally applied lateral pressure, thereby ensuring the performance of the cell module 20.

[0135] Specifically, the design of the injection assembly 10 allows it to form a balanced support structure on both symmetrical sides of the cell module 20. This structural configuration greatly enhances the overall rigidity of the cell module 20, especially when facing external impacts, the uniformity of the supporting force significantly reduces the deformation of the module. Therefore, this design achieves efficient support for the cell module 20 during use, enabling it to maintain good structural stability during long-term operation.

[0136] In some embodiments, the number and arrangement of the injection assemblies 10 can be further varied; for example, multiple sets of injection assemblies 10 can be arranged around the cell module 20. Through this surrounding arrangement, the injection assemblies 10 can provide uniform support in all directions of the cell module 20. This design is particularly suitable for the multi-directional expansion or contraction that may occur during use of the cell module 20. When the module deforms under thermal cycling or current changes, the surrounding injection assemblies 10 can effectively disperse and buffer the stress caused by these deformations, thereby further improving the safety and reliability of the cell module 20. The advantages of the surrounding arrangement are not only reflected in the structural stability but also in enhancing the overall durability and applicability of the cell module 20. Unlike unidirectional support, surrounding support can better cope with the effects of dynamic loads and multi-dimensional stresses. In practical applications, this ensures that the battery module does not suffer fatigue damage during high-power or high-frequency use, improving overall operating efficiency.

[0137] Furthermore, depending on the required support force and the specific structural requirements of the cell module 20, the number of injection components 10 can be two, three, or more, without any specific limitation. Specifically, setting multiple injection components 10 can significantly improve the uniformity of support force and form an all-around protective array when subjected to external forces, enhancing the overall stability of the cell module 20. Whether using a symmetrical arrangement or a surrounding configuration, this flexible design can effectively cope with different working environments and application requirements, ensuring the safety and reliability of the battery module during long-term use.

[0138] In one embodiment, the support member 100 has a cable groove 140 for accommodating the cables of the battery cell module 20. By arranging the cables in the cable groove 140, the clutter around the battery cell module 20 can be effectively reduced, the cleanliness of the battery pack 1 can be improved, and the crossing or tangling of cables can be avoided, thereby improving the reliability of the electrical connection.

[0139] The cable tray 140 effectively protects cables during operation, preventing wear or breakage caused by environmental factors or mechanical vibration. Traditionally, cables may be placed haphazardly, easily leading to signal interference or short circuits. The cable tray 140 design effectively avoids these potential problems.

[0140] In a preferred embodiment, the cable channel 140 is arranged on the peripheral sidewall 120 of the support member 100. This layout not only optimizes space utilization but also makes the overall structure of the injection assembly 10 more compact. This design not only improves the ease of operation of the product but also simplifies the maintenance and replacement process of cables to a certain extent. Since the cable channel 140 is located on the peripheral sidewall 120, it reduces the occupation of internal space, allowing the cell module 20 and the injection assembly 10 to cooperate and support each other more effectively, further enhancing the structural stability of the battery pack.

[0141] This utility model also provides a battery pack 1, which includes a tray 30, a cell module 20, and an injection assembly 10 as described in any of the above embodiments; the tray 30 is provided with a placement cavity 31; the cell module 20 is disposed in the placement cavity 31, and the cell module 20 and the inner wall of the placement cavity 31 are spaced apart in the width direction and / or length direction of the cell module 20; the injection assembly 10 is disposed between the cell module 20 and the tray 30 in the width direction and / or length direction of the cell module 20.

[0142] It is understood that in the battery pack 1 of this embodiment, by setting the glue injection assembly 10 as in any of the above embodiments, the glue injection assembly 10 of this embodiment forms a glue injection space for filling the adhesive between the side wall of the cell module 20 and the inner wall of the side wall portion 33 of the tray 30 by setting the support member 100, which effectively solves the problem of performance degradation caused by insufficient support capacity in the later stage of the battery pack 1's service life. Compared with the traditional vacuum compression foam solution, the glue injection assembly 10 of this embodiment adds an adhesive in the glue injection space 300 to provide a more durable and reliable support force after bonding, thereby improving the cycle performance degradation caused by material degradation of vacuum foam and significantly improving the safety and reliability of the battery pack 1.

[0143] The adhesive injection assembly of this embodiment forms a sealed adhesive injection space 300 by setting a sealant 200 between the support member 100 and the tray 30. This design greatly improves the injection efficiency of the adhesive, ensuring that the adhesive can be injected evenly and effectively within the adhesive injection space 300, thereby achieving a stable connection between the cell module 20 and the tray 30 after curing. This not only provides more stable support for the battery pack 1, but also enhances the structural integrity and safety of the entire battery pack 1. In one embodiment, the cell module 20 includes multiple cells, which are formed by stacking the multiple cells.

[0144] In one embodiment, one side of the glue injection assembly 10 is bonded to the battery cell module 20 and / or the other side of the glue injection assembly 10 is bonded to the tray 30. This bonding method enables the glue injection assembly 10 to achieve efficient positioning and stable installation during assembly.

[0145] Specifically, when either side of the adhesive-filled assembly 10 is bonded to the cell module 20 or the sidewall 33, the use of adhesive increases the contact area between the components, thereby improving the bonding strength. This bonding method simplifies the installation process, reduces assembly time, and improves work efficiency. Furthermore, the bonding structure itself allows for a certain degree of displacement and adjustment, enabling accurate positioning during assembly through simple pressure or adjustment, further enhancing the convenience of overall assembly.

[0146] Specifically, the tray 30 includes a bottom plate portion 32 and a side wall portion 33 connected to each other. The bottom plate portion 32 and the side wall portion 33 enclose a placement cavity 31. The battery cell module 20 is spaced apart from the side wall portion 33, and the glue injection assembly 10 is disposed between the battery cell module 20 and the side wall portion 33. This structural design not only optimizes the use of space but also provides stable support for the battery cell module 20.

[0147] By providing an injection assembly 10 between the cell module 20 and the side wall 33 of the tray 30, this embodiment effectively addresses the expansion and contraction phenomena that may occur in the cell module 20 during use. Since the cell module 20 is affected by temperature and current during operation, it typically experiences thermal expansion. In this case, the injection assembly 10 can provide necessary support for the cell module 20 in the expansion direction, thereby preventing deformation or damage to the cell module 20 due to excessive expansion. This design provides a more balanced stress state for the cell module 20, reduces the occurrence of local stress concentration, and thus improves the safety and reliability of the battery pack 1.

[0148] Furthermore, the glue-filling assembly 10, through its mechanical interaction with the cell module 20, effectively absorbs externally applied impact forces, further enhancing the shock resistance of the battery pack 1. This vibration-absorbing function is particularly important in working environments with shaking or vibration, preventing unnecessary damage to the cell module 20 while ensuring its stable performance during high-power or high-frequency use.

[0149] It should be noted that the number of injection components 10 can also be flexibly adjusted, typically set to one or more, to further enhance the support of the cell module 20. When multiple injection components 10 are provided, they can be placed at different locations on the cell module 20 to achieve more uniform stress and support. This arrangement helps to better cope with the multi-dimensional stresses on the cell module 20 during use, effectively preventing damage caused by uneven stress.

[0150] In one embodiment, the tray 30 further includes a partition 34, which is connected to the base plate 32 and the side wall 33 respectively. The partition 34 divides the internal space of the tray 30 into multiple placement cavities 31. An adhesive injection assembly 10 is provided between the partition 34 and the battery module 20 and / or between the battery module 20 and the side wall 33. This partition design also increases the flexibility and adaptability of the tray 30, allowing for the independent and reasonable placement of battery modules 20 of different models or specifications.

[0151] In this structure, at least one set of adhesive injection components 10 is disposed between the partition 34 and the cell module 20. This arrangement ensures that when the cell module 20 expands due to operating temperature or other external factors, the adhesive injection components 10 provide effective support, preventing excessive deformation or damage during use. The presence of the adhesive injection components 10 ensures that the cell module 20 receives good support in all the placement cavities 31.

[0152] This design allows for efficient and maximized use of the internal space of the tray 30. Each compartment 31 can accommodate different types or capacities of battery cell modules 20, enabling flexible management of different cell combinations. This versatile structural design not only improves the overall performance of the power storage device but also facilitates rapid replacement during module upgrades or maintenance, reducing downtime and enhancing the overall reliability of the system.

[0153] On the other hand, the arrangement of multiple injection components 10 can further optimize the support effect of the cell module 20. Specifically, the number of these injection components 10 can be set to one, two, or more, and the specific number is not limited to one. The arrangement of multiple sets of injection components 10 can support the cell module 20 in multiple directions, which is of positive significance for improving the structural stability of the entire battery pack 1 and extending its service life.

[0154] This utility model also provides an electrical device, which includes the glue injection assembly 10 in any of the above embodiments, or the battery pack 1 in any of the above embodiments, wherein the battery pack 1 is used to supply power to the electrical device of the electrical device. Specifically, the electrical device includes, but is not limited to, electric vehicles and electronic devices.

[0155] In the implementation of the aforementioned electrical equipment, several technical effects can be achieved by applying the glue injection assembly 10 in any of the above embodiments. First, the design of the glue injection assembly 10 not only provides effective support for the battery cell module 20, but also forms excellent support characteristics through the filling material, ensuring the performance of the battery cell module 20. This is particularly important for mobile electrical equipment such as electric vehicles, as it can significantly improve their stability and safety under complex road conditions.

[0156] In summary, by integrating the glue injection component 10 from any of the above embodiments into the electrical equipment, not only is the stability and safety of the battery pack 1 improved, but the durability of the electrical equipment in complex environments is also enhanced, enabling it to achieve better application results in multiple fields such as electric vehicles and electronic devices.

[0157] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, 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 the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0158] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0159] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0160] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A potting assembly (10) for a battery pack, characterized in that, The battery pack (1) includes a tray (30) and a cell module (20). The tray (30) includes a placement cavity (31) formed by a bottom plate portion (32) and a side wall portion (33). The cell module (20) is disposed in the placement cavity (31). The glue injection assembly (10) includes: A support member (100) is disposed between the battery cell module (20) and the side wall portion (33). A glue injection space (300) is formed between the side of the support member (100) facing the side wall portion (33) and the side wall portion (33). The glue injection space (300) is used to fill the adhesive to bond the support member (100) and the side wall portion (33).

2. The potting assembly (10) for a battery pack according to claim 1, characterized in that, The glue injection assembly (10) further includes a seal (200), which is adapted to be disposed between the support (100) and the side wall portion (33), and the support (100), the seal (200) and the side wall portion (33) (30) enclose a glue injection space (300).

3. The potting assembly (10) for a battery pack according to claim 2, characterized in that, The sealing element (200) is a flexible structure and is adapted to be pressed between the support (100) and the side wall portion (33).

4. The potting assembly (10) for a battery pack according to claim 3, characterized in that, The sealing element (200) includes vacuum foam.

5. The potting assembly (10) for a battery pack according to claim 2, characterized in that, The support member (100) has an installation groove (110) on the side facing the seal (200), and / or the inner wall of the side wall portion (33) has an installation groove (110); the seal (200) is housed in the installation groove (110) and is positioned away from the battery cell module (20).

6. The potting assembly (10) for a battery pack according to claim 5, characterized in that, The sealing element (200) includes a ring body (210) and an extension (220) connected to each other. The ring body (210) is at least partially accommodated in the mounting groove (110), and the ring body (210) is enclosed with the inner wall of the support (100) and the side wall portion (33) to form the glue injection space (300). The extension (220) is located outside the glue injection space (300).

7. The potting assembly (10) for a battery pack according to claim 5, characterized in that, The support member (100) is provided with a connecting channel for injecting the adhesive into the injection space (300) and / or venting; the support member (100) includes an injection surface (130), the mounting groove (110) is located between the injection surface (130) and the side wall portion (33), and the sealing member (200) is respectively enclosed with the inner walls of the injection surface (130) and the side wall portion (33) to form the injection space (300), and the first port of the connecting channel is located on the injection surface (130) and communicates with the injection space (300).

8. The potting assembly (10) for a battery pack according to claim 7, characterized in that, The glue inlet surface (130) is recessed toward the side away from the center of the glue injection space (300).

9. The potting assembly (10) for a battery pack according to claim 7, characterized in that, The mounting groove (110) is positioned around the glue inlet surface (130) by its orthogonal projection onto the support member (100).

10. The potting assembly (10) for a battery pack according to claim 2, characterized in that, The sealing element (200) includes a ring body (210) and an extension (220). The ring body (210) is respectively enclosed by the support (100) and the inner wall of the placement cavity (31) to form the glue injection space (300). The extension (220) is connected to the side of the ring body (210) away from the glue injection space (300).

11. The potting assembly (10) for a battery pack according to claim 1, characterized in that, The other side of the support (100) is adapted to be bonded to the battery cell module (20).

12. The potting assembly (10) for a battery pack according to claim 1, characterized in that, The adhesive includes at least one of foam, structural adhesive and thermally conductive adhesive.

13. The potting assembly (10) for a battery pack according to claim 7, characterized in that, The support member (100) includes a peripheral sidewall (120) and an adhesive inlet surface (130), the peripheral sidewall (120) is connected to the adhesive inlet surface (130), and the second port of the connection channel is located on the peripheral sidewall.

14. The potting assembly (10) for a battery pack according to claim 7, characterized in that, The connection channel includes an adhesive inlet channel and an outlet channel, and the first port of the adhesive inlet channel and the first port of the outlet channel are spaced apart along the length or width direction of the support member (100).

15. The potting assembly (10) for a battery pack according to any one of claims 1-14, characterized in that, The number of the glue injection components (10) is multiple, with two sets of the glue injection components (10) located on opposite sides of the battery cell module (20).

16. The potting assembly (10) for a battery pack according to any one of claims 1-14, characterized in that, The support member (100) has a wire groove (140) for accommodating the cables of the battery cell module (20).

17. A battery pack (1), characterized in that, include: The tray (30) has a placement cavity (31); A battery cell module (20) is disposed in the placement cavity (31), and the battery cell module (20) is spaced apart from the inner wall of the placement cavity (31) in the width direction and / or length direction. The glue injection assembly (10) as described in any one of claims 1-16 is disposed between the battery cell module (20) and the tray (30) in the width direction and / or length direction of the battery cell module (20).

18. The battery pack (1) according to claim 17, characterized in that, One side of the glue injection assembly (10) is bonded to the battery cell module (20) and / or the other side of the glue injection assembly (10) is bonded to the tray (30).

19. The battery pack (1) according to claim 17, characterized in that, The tray (30) includes a bottom plate (32) and a side wall (33) connected to each other. The bottom plate (32) and the side wall (33) enclose the placement cavity (31). The battery cell module (20) is spaced apart from the side wall (33). The glue injection assembly (10) is located between the battery cell module (20) and the side wall (33).

20. The battery pack (1) according to claim 19, characterized in that, The tray (30) further includes a partition (34), which is connected to the bottom plate (32) and the side wall (33) respectively. The partition (34) divides the internal space of the tray (30) into a plurality of placement cavities (31). The glue injection assembly (10) is provided between the partition (34) and the battery cell module (20) and / or between the battery cell module (20) and the side wall (33).

21. An electrical appliance, characterized in that, Includes the injection assembly (10) as described in any one of claims 1-16 or the battery pack (1) as described in any one of claims 17-20.

Images