Support and battery pack

Abstract

The present application provides a support and a battery pack. The support comprises a base portion. The base portion is provided with at least one mounting hole and at least one communication port. Each mounting hole is adapted to mount a corresponding battery cell, and each communication port runs through the inner side wall of the corresponding mounting hole. The base portion is further provided with at least one glue injection hole. Each glue injection hole is communicated with the corresponding mounting hole by means of the corresponding communication port.

Description

A bracket and battery pack

[0001] This application claims priority to Chinese Patent Application No. 202423239795.X, filed with the Chinese Patent Office on December 26, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, specifically to a bracket and a battery pack. Background Technology

[0003] In related technologies, the installation steps for battery cells are usually as follows: first, fix one end of the battery cell assembly to a bracket, and then fix the other end of the battery cell assembly to another bracket. Invention Overview

[0004] In practical applications, the above structural design often has the following defects: (1) The bracket is not strong enough to fix the battery cell in the environment of vibration or impact, which makes the battery cell easy to shift in the environment, which may lead to poor contact between the battery cell group and other components; (2) The installation steps include fixing the two brackets to the two ends of the battery cell group in sequence, and each bracket needs to be positioned, adjusted and fixed separately, which makes the installation process more complicated and the installation efficiency of the battery cell group is low.

[0005] This application provides a bracket for mounting at least one battery cell, comprising: a base having at least one mounting hole and at least one connecting port, each mounting hole being adapted to mount a corresponding battery cell, and each connecting port penetrating the inner sidewall of the corresponding mounting hole; wherein the base also has at least one injection hole, each injection hole being connected to the corresponding mounting hole through the corresponding connecting port.

[0006] This application also provides a battery pack, including at least one battery cell and the bracket described above. Beneficial effects

[0007] The bracket provided in this application embodiment includes a base, which has at least one mounting hole and at least one connecting port. Each mounting hole is suitable for mounting a corresponding battery cell, and each connecting port penetrates the inner wall of the corresponding mounting hole. The base also has at least one injection hole, and each injection hole connects to the corresponding mounting hole through the corresponding connecting port. The bracket provided in this application embodiment avoids the need for positioning and alignment of the bracket during battery cell installation in related technologies, thereby reducing the complexity of manual operation during battery cell installation. Furthermore, injecting adhesive material into the gap between the battery cell and the mounting hole through the injection hole effectively enhances the connection stability between the battery cell and the mounting hole, effectively reducing the impact of external impact and vibration on the connection stability between the bracket and the battery cell, thereby reducing the risk of battery cell displacement or loosening of connections with other components.

[0008] The battery pack provided in this application embodiment, by applying the bracket described above, can reduce assembly difficulty and ensure structural stability. Attached Figure Description

[0009] Figure 1 is a schematic diagram of the structure of the bracket provided in an embodiment of this application;

[0010] Figure 2 is a schematic diagram of the structure of the bracket and battery cell provided in an embodiment of this application;

[0011] Figure 3 is a top view of the bracket in Figure 1;

[0012] Figure 4 is a cross-sectional view at point AA in Figure 3;

[0013] Figure 5 is a side view of the bracket in Figure 1.

[0014] Explanation of reference numerals in the attached figures:

[0015] 100, bracket; 110, base; 120, mounting hole; 130, connecting port; 131, first connecting port; 132, second connecting port; 140, glue injection hole; 150, weight reduction hole; 160, fixing part; 200, battery cell. Embodiments of the present invention

[0016] In the first aspect, as shown in FIG1, an embodiment of this application provides a bracket 100. Please refer to FIG1 and FIG2. FIG1 is a structural schematic diagram of the bracket 100 provided in the embodiment of this application, and FIG2 is a structural schematic diagram of the bracket 100 and the battery cell 200 provided in the embodiment of this application. The bracket 100 includes a base 110. The base 110 is provided with at least one mounting hole 120, at least one communication port 130, and at least one glue injection hole 140. Each mounting hole 120 is used to mount the corresponding battery cell 200, and each communication port 130 penetrates the inner sidewall of the corresponding mounting hole 120. Each glue injection hole 140 is connected to the corresponding mounting hole 120 through the corresponding communication port 130.

[0017] For example, the step of fixing the battery cell 200 with the bracket 100 provided in this embodiment includes:

[0018] (1) Install each cell 200 into the corresponding mounting hole 120, and ensure that the cell 200 is aligned;

[0019] (2) After all the cells 200 are installed into the mounting holes 120 of the bracket 100, adjust the position of the bracket 100 so that the side of the bracket 100 with the glue injection hole 140 faces upward, so as to facilitate the injection of glue.

[0020] (3) Apply glue to the glue injection hole 140 on the bracket 100 by means of a glue injection device or by manual injection. During the injection process, the glue will flow along the direction and fill the gap between the battery cell 200 and the mounting hole 120 under the influence of inertia and gravity. The glue will gradually cover the inner wall of the battery cell 200 and the mounting hole 120 and begin to bond the two. Through its curing effect, the glue will bond between the inner wall of the battery cell 200 and the mounting hole 120, and finally form a strong bonding structure.

[0021] Compared to the fixing method in related technologies where the two ends of the battery cell 200 are sequentially installed onto two brackets 100, this embodiment provides a bracket 100 with multiple mounting holes 120 provided at its base 110. The installation of the battery cell 200 only requires installing the entire battery cell 200 into the corresponding mounting holes 120, without requiring additional positioning and adjustment of the bracket 100. This structural design avoids the positioning and alignment operations of the bracket 100 during the installation of the battery cell 200 in related technologies, thereby reducing the difficulty of manual operation during battery cell installation. The simplified installation process reduces human error and potential damage risks, thus improving overall production efficiency.

[0022] Furthermore, the battery cell 200 is bonded to the mounting hole 120 using an adhesive material, which effectively enhances the connection stability between the battery cell 200 and the mounting hole 120. The application of the adhesive material also fills any tiny gaps that may exist between the battery cell 200 and the mounting hole 120 during flow, further improving the fixation effect of the battery cell 200. Compared to related technologies that use two supports 100 to fix the two ends of the battery cell 200 respectively, this structural design has a larger relative area between the inner wall of the mounting hole 120 and the side of the battery cell 200, allowing the battery cell 200 to adhere tightly to the mounting hole 120 using the adhesive material, thus ensuring the stability of the battery cell 200 within the mounting hole 120. This structural design effectively reduces the impact of external shocks and vibrations, thereby reducing the risk of displacement of the battery cell 200 or loosening of connections with other components.

[0023] In some embodiments, referring to Figures 1 and 2, the base 110 is provided with a plurality of mounting holes 120 arranged along a first direction. Each communication port 130 penetrates the inner sidewall of two adjacent mounting holes 120 in the first direction, so that each injection hole 140 communicates with two adjacent mounting holes 120 in the first direction through the corresponding communication port 130. The first direction can be referred to as the X direction in Figures 1 and 2.

[0024] To ensure sufficient adhesive material is injected into each mounting hole 120, a dedicated injection hole 140 is typically designed for each mounting hole 120. While this method ensures effective adhesive injection in each mounting hole 120, when the bracket 100 has a large number of mounting holes 120, the number of injection holes 140 also increases accordingly. This may lead to an increase in pores in the bracket 100 structure, thereby weakening the overall strength of the bracket 100 and ultimately affecting its stability and durability. Furthermore, setting multiple injection holes 140 may increase production costs and the complexity of the adhesive injection process.

[0025] To address the aforementioned issues, in this embodiment, the connecting port 130 is designed to penetrate the inner wall between two adjacent mounting holes 120, allowing one injection hole 140 to simultaneously inject adhesive material into two adjacent mounting holes 120 through the flow channel. This "one-hole reuse" structural design not only reduces the number of injection holes 140, preventing a decrease in the structural strength of the bracket 100 due to an excessive number of injection holes 140, but also simplifies the manufacturing process and injection operation of the bracket 100.

[0026] In some embodiments, referring to Figures 1 and 2, the base 110 is provided with a plurality of mounting holes 120 arranged along a second direction, and each injection hole 140 is connected to two adjacent mounting holes 120 in the second direction through two corresponding connecting ports 130. The second direction can be referred to as the Y direction in Figures 1 and 2.

[0027] In this embodiment, each injection hole 140 is connected to two adjacent mounting holes 120 in the second direction via two corresponding connecting ports 130, allowing adhesive material to flow through the injection hole 140 and fill the two adjacent mounting holes 120 in the second direction. In conventional designs, a separate injection hole 140 is usually required for each mounting hole 120. While this ensures that each mounting hole 120 receives sufficient adhesive material, it also increases the complexity of the overall structure of the support 100 and may negatively impact the strength and stability of the support 100. In this embodiment, each injection hole 140 is connected to two adjacent mounting holes 120 via two connecting ports 130. This effectively reduces the number of injection holes 140 in the support structure while still allowing liquid injection into multiple mounting holes 120, thus avoiding the problem of reduced overall strength of the base 110 due to an excessive number of injection holes 140.

[0028] In some embodiments, referring to FIG2, each injection hole 140 is connected to two adjacent mounting holes 120 in a second direction through two corresponding connecting ports 130. The two connecting ports 130 include a first connecting port 131 and a second connecting port 132. The second connecting port 132 is located on the side of the first connecting port 131 away from the injection hole 140, and the size of the second connecting port 132 in the circumferential direction of the corresponding mounting hole 120 is smaller than the size of the first connecting port 131 in the circumferential direction of the corresponding mounting hole 120.

[0029] Each connecting opening 130 penetrates the inner wall of the corresponding mounting hole 120, meaning that the size of the connecting opening 130 directly affects the structural strength of the inner wall of the mounting hole 120. To ensure that the design and manufacturing process does not excessively weaken the strength of the inner wall of the mounting hole 120, this embodiment sets the circumferential dimension of the second connecting opening 132 in the corresponding mounting hole 120 to be smaller than the circumferential dimension of the first connecting opening 131. This ensures that the inner wall of the mounting hole 120 can maintain sufficient structural strength, reducing the risk of structural breakage or deformation of the bracket 100.

[0030] In some embodiments, please refer to Figures 1, 3 and 4. Figure 3 is a top view of the bracket in Figure 1 and Figure 4 is a cross-sectional view of Figure 3. The dimension d of the second communication port 132 in the second direction and the radius r of the mounting hole 120 satisfy: r-0.2mm≤d≤r+0.2mm.

[0031] Experiments have shown that when the dimension d of the second connecting port 132 in the second direction is greater than r + 0.2 mm, the inner wall of the second connecting port 132 may have insufficient structural strength due to the excessively large d. In this case, the load-bearing capacity and stability of the base 110 will be affected, especially when subjected to external pressure or load. The inner wall of the corresponding mounting hole 120 may be at risk of cracking or deformation, thereby reducing the service life and reliability of the bracket 100. In addition, when the dimension d of the second connecting port 132 in the second direction is less than r - 0.2 mm, the flow efficiency of the adhesive material may be low, thus affecting the efficiency of the adhesive material in bonding the battery cell 200 to the inner wall of the mounting hole 120.

[0032] Therefore, in this embodiment, the dimension d of the second connecting port 132 in the second direction is set between r−0.2mm and r+0.2mm, which can effectively ensure the structural strength of the inner sidewall of the support 100, and at the same time ensure high liquid injection efficiency.

[0033] In some embodiments, please refer to FIG5, which is a side view of the bracket in FIG1. ​​The base 110 is provided with a plurality of mounting holes 120, and the plurality of mounting holes 120 are evenly spaced along a first direction and a second direction. The wall thickness L1 between two adjacent mounting holes 120 is 2 mm to 2.5 mm.

[0034] Experimental verification shows that to ensure the structural strength of the base 110, the wall thickness between adjacent mounting holes 120 must be no less than 2mm. When the wall thickness between adjacent mounting holes 120 is less than 2mm, the structural strength of the base 110 may be insufficient. Especially when the bracket 100 is subjected to external pressure or vibration, the walls of the mounting holes 120 are prone to cracking or deformation, thus affecting the load-bearing capacity and service life of the bracket 100. Therefore, a minimum wall thickness of 2mm effectively ensures the stability and compressive strength of the base 110 of the bracket 100, preventing cell 200 failure or damage due to structural instability of the base 110. Furthermore, to avoid excessive weight of the base 110 leading to an overly heavy overall weight of the bracket 100, the wall thickness between adjacent mounting holes 120 must be no greater than 2.5mm. Excessive wall thickness between adjacent mounting holes 120 not only increases material usage and production costs but may also make the overall weight of the bracket 100 heavier, thus affecting its ease of operation.

[0035] When the wall thickness between adjacent mounting holes 120 is between 2mm and 2.5mm, the base 110 has good structural strength under normal working conditions, and this wall thickness range can effectively avoid the inconvenience caused by the overall excessive weight of the bracket 100 due to excessive wall thickness.

[0036] In some embodiments, the base 110 is provided with a plurality of mounting holes 120, and the plurality of mounting holes 120 are arranged along a first direction and a second direction. In addition, the base 110 is also provided with a plurality of weight-reducing holes 150, each weight-reducing hole 150 being located between a plurality of adjacent mounting holes 120 along the first direction and the second direction.

[0037] The weight-reducing hole 150 provided in the base 110 in this embodiment has the following significant advantages:

[0038] (1) Reduce the weight of the base 110: The design of the weight reduction hole 150 effectively reduces the weight of the base 110. By adding the weight reduction hole 150 between the mounting holes 120, not only can unnecessary material usage be reduced, but the overall weight can also be reduced without affecting the load-bearing capacity of the base 110, thereby reducing the production and transportation costs of the bracket 100.

[0039] (2) Enhancing the structural strength of the base 110: The setting of the weight-reducing hole 150 can effectively control the wall thickness of the inner wall of the base 110. By designing the size and position of the weight-reducing hole 150, the wall thickness between the inner wall of the weight-reducing hole 150 and the inner wall of the adjacent mounting hole 120 can be controlled to be approximately equal to the wall thickness between the two adjacent mounting holes 120. This ensures that the wall thickness of each part of the base 110 is consistent, avoiding the uneven strength caused by the local wall thickness of the base 110 being too thin or too thick, thereby ensuring the consistency of the wall thickness. This allows the base 110 to effectively distribute the external load, reduce stress concentration, and enhance the overall stability and load-bearing capacity of the base 110.

[0040] In some embodiments, the diameter of the injection hole 140 is 8mm to 10mm. The diameter of the injection hole 140 has a significant impact on the injection efficiency. Experiments have shown that when the diameter of the injection hole 140 is less than 8mm, the flow of adhesive material is restricted during the injection process, resulting in a smaller amount of adhesive material injected per unit time, leading to lower injection efficiency and ultimately affecting the installation efficiency of the battery cell 200. When the diameter of the injection hole 140 is greater than 10mm, excessive injection of adhesive may result in redundant adhesive material during the injection process.

[0041] Therefore, in this embodiment, the diameter of the injection hole 140 is designed to be within the range of 8mm to 10mm, which can effectively balance the injection efficiency and the amount of redundant adhesive material. Within this range, on the one hand, excessive redundant adhesive material can be avoided during the injection process, and on the other hand, the injection efficiency can be guaranteed.

[0042] In some embodiments, referring to Figures 1 and 2, the bracket 100 further includes a plurality of fixing portions 160, each fixing portion 160 being connected to the base 110. The fixing portions 160 are configured to fix the base 110 to other components. Each fixing portion 160 is provided with a screw hole, which is configured to allow fasteners such as bolts to pass through and engage with the screw holes of the housing, thereby fixing the base 110. The spacing between adjacent fixing portions 160 is equal. This design effectively and evenly distributes the stress borne by the base 110 during fixing, avoiding stress concentration at a certain location and reducing the risk of damage to the bracket 100. The uniform spacing design ensures the stability of the bracket 100 under different load conditions, preventing the base structure from cracking due to excessive local stress, thereby improving the overall durability and service life of the bracket 100.

[0043] Furthermore, a gap is provided between part of the fixing portion 160 and the base 110. This gap is designed to allow the separator assembly (not shown in the figure) to snap into place between the fixing portion 160 and the base 110. This allows the separator assembly to fix and protect the battery cell 200. By snapping into place between the fixing portion 160 and the base 110, the separator assembly prevents the battery cell 200 from shifting in the third direction, thereby ensuring the safety of the battery cell 200.

[0044] This application provides a bracket 100, which includes a base 110. The base 110 has at least one mounting hole 120 and at least one connecting port 130. Each mounting hole 120 is suitable for mounting a corresponding battery cell 200, and each connecting port 130 penetrates the inner sidewall of the corresponding mounting hole 120. The base 110 also has at least one injection hole 140, and each injection hole 140 is connected to the corresponding mounting hole 120 through the corresponding connecting port 130. The bracket 100 provided by this application can, on the one hand, avoid the positioning and alignment operation of the bracket 100 during the installation of the battery cell 200 in related technologies, thereby reducing the complexity of manual operation during the installation of the battery cell 200. On the other hand, by injecting adhesive material into the gap between the battery cell 200 and the mounting hole 120 through the injection hole 140, the connection stability between the battery cell 200 and the mounting hole 120 can be effectively enhanced, effectively reducing the impact of external impact and vibration on the connection stability between the bracket 100 and the battery cell 200, thereby reducing the risk of displacement of the battery cell 200 or loosening of the connection with other components.

[0045] This application also provides a battery pack that includes the aforementioned bracket 100 and has all the advantages of the aforementioned bracket 100, which will not be repeated here.

Claims

1. A bracket configured to mount at least one battery cell, comprising: The base is provided with at least one mounting hole and at least one communication port, each mounting hole is adapted to install the corresponding battery cell, and each communication port penetrates the inner sidewall of the corresponding mounting hole; The base is further provided with at least one injection hole, and each injection hole is connected to the corresponding mounting hole through the corresponding connecting port.

2. The stent according to claim 1, wherein, The battery cell is bonded to the mounting hole.

3. The stent according to claim 1 or 2, wherein, The base is provided with a plurality of mounting holes, which are arranged along a first direction; each of the communication ports penetrates the inner sidewalls of two adjacent mounting holes in the first direction; wherein each of the glue injection holes is connected to two adjacent mounting holes in the first direction through the corresponding communication port.

4. The stent according to any one of claims 1-3, wherein, The base is provided with a plurality of mounting holes, which are arranged along a second direction; wherein each of the glue injection holes is connected to two adjacent mounting holes in the second direction through corresponding two communication ports.

5. The stent according to claim 4, wherein, The two connecting ports include a first connecting port and a second connecting port, the second connecting port being located on the side of the first connecting port away from the injection hole; wherein, the dimension of the second connecting port in the circumferential direction of the corresponding mounting hole is smaller than the dimension of the first connecting port in the circumferential direction of the corresponding mounting hole.

6. The stent according to claim 5, wherein, r-0.2mm≤d≤r+0.2mm; where d is the dimension of the second connecting port in the second direction, and r is the radius of the mounting hole.

7. The stent according to any one of claims 1-6, wherein, The base is provided with a plurality of mounting holes, which are arranged along a first direction and a second direction; wherein the wall thickness between two adjacent mounting holes is 2 mm to 2.5 mm.

8. The stent according to any one of claims 1-7, wherein, The base is provided with a plurality of mounting holes, which are arranged along a first direction and a second direction; wherein, the base is also provided with a plurality of weight-reducing holes, each of which is located between a plurality of mounting holes adjacent to each other along the first direction and the second direction.

9. The stent according to claim 8, wherein, The wall thickness between each of the weight-reducing holes and the corresponding plurality of mounting holes is equal.

10. The stent according to any one of claims 1-9, wherein, The diameter of the injection hole is 8mm to 10mm.

11. A battery pack comprising the support as described in any one of claims 1-10.

12. The battery pack according to claim 11, further comprising a housing and at least one battery cell; The battery cell is mounted on the bracket, and the bracket is fixed to the housing.

13. The battery pack according to claim 12, wherein, The bracket also includes at least one fixing part, and the bracket is fixed to the box body by the fixing part.

14. The battery pack according to claim 13, wherein, All the fixing parts are connected to the base, and some of the fixing parts are provided with gaps between the fixing parts and the base; The battery pack also includes a separator assembly that is snapped between the fixing part and the base.

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