Support assembly, battery module and battery pack

Abstract

The utility model provides a bracket assembly, a battery module and a battery pack. According to the support assembly, the first support and the second support are combined, the first sub-support of the first support is arranged on the side face of the battery pack, the second sub-support of the first support is arranged at the first electrode end of the battery pack, and at least part of the second support is arranged at the second electrode end of the battery pack. Therefore, the first support can be used for bearing an acquisition wire harness and a part of busbars in the battery module, the second support can be used for bearing an output electrode busbar of the battery module, and the second support and the first support are arranged in a split manner, namely, the second support and the first support are mutually independent; by adjusting the forming process, the material size and the like of the first bracket and the second bracket, the stable connection between the battery module and the external structure is ensured while the overall production cost and the weight of the bracket assembly are reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a bracket assembly, a battery module, and a battery pack. Background Technology

[0002] In related technologies, the CCS (Content Controller System) components of low-voltage power battery modules primarily use one-piece molded plastic brackets or vacuum-formed brackets to support the busbars and data acquisition harnesses. However, plastic brackets generally require injection molding, resulting in relatively high manufacturing costs and weight, which can reduce the energy density of the battery module. While vacuum-formed brackets can effectively reduce costs and weight, their lower structural strength leads to poorer overall structural stability of the battery module. Utility Model Content

[0003] Embodiments of this application provide a bracket assembly, a battery module, and a battery pack, which can solve the technical problem that the bracket assembly cannot ensure sufficient structural strength while reducing costs.

[0004] In a first aspect, embodiments of this application provide a support assembly for a battery module, the battery module including a battery pack, the support assembly comprising:

[0005] The first support includes a first sub-support and a second sub-support that are connected to each other. The first sub-support is used to be disposed on the side surface of the battery pack, and the second sub-support is used to be disposed on the first terminal of the battery pack.

[0006] The second bracket is connected to the first bracket and is used to at least partially occupy the second terminal of the battery pack. The second bracket is separately disposed from the first bracket.

[0007] In one embodiment, the first bracket includes a blister bracket, and the second bracket includes a plastic bracket.

[0008] In one embodiment, the first sub-bracket has a first mounting slot on the side facing the battery pack, the first mounting slot being used to mount a first temperature sensor.

[0009] In one embodiment, the first mounting groove has an arcuate surface connected to the first temperature sensor, and the diameter of the circle containing the arcuate surface is greater than or equal to 4 mm and less than or equal to 8 mm.

[0010] In one embodiment, the second bracket includes a first main body and a first adapter connected to each other. The first main body is disposed at the second terminal of the battery pack, and the first adapter is disposed on the side surface of the battery pack. The first adapter is connected to the first sub-bracket.

[0011] In one embodiment, the first connecting segment is provided with a wire guide groove, and the first main body portion has a mounting portion protruding on the side facing the battery pack. The mounting portion is provided with a second mounting groove for mounting a second temperature sensor.

[0012] In one embodiment, the first sub-bracket includes a second main body and a second adapter connected to each other. The second main body is connected to the second sub-bracket, and the second adapter is connected to the first adapter. The second main body is used to mount the adapter of the battery module.

[0013] In one embodiment, the thickness of the first support is greater than or equal to 0.5 mm and less than or equal to 0.8 mm; and / or, the thickness of the second support is greater than or equal to 1 mm and less than or equal to 2 mm.

[0014] Secondly, embodiments of this application provide a battery module including the bracket assembly described in any of the above claims.

[0015] Thirdly, embodiments of this application provide a battery pack including the aforementioned battery module.

[0016] The beneficial effects of the embodiments of this application are as follows:

[0017] In the embodiments of this application, by combining the first bracket and the second bracket, and setting the first sub-bracket of the first bracket on the side surface of the battery pack, setting the second sub-bracket of the first bracket on the first terminal of the battery pack, and setting the second bracket at least partially on the second terminal of the battery pack, the first bracket can be used to carry the acquisition harness and part of the busbar in the battery module, while the second bracket can be used to carry the output busbar of the battery module. The second bracket and the first bracket are set separately, that is, the second bracket and the first bracket are independent of each other, so that by adjusting the molding process, material and size of the first bracket and the second bracket, the overall production cost and weight of the bracket assembly can be reduced while ensuring a stable connection between the battery module and the external structure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an exploded structural diagram of a support assembly provided in an embodiment of this application;

[0020] Figure 2This is a schematic diagram of a support assembly provided in an embodiment of this application from a first-view perspective;

[0021] Figure 3 This is provided by the embodiments of this application. Figure 2 Enlarged structural diagram of region A in the middle;

[0022] Figure 4 This is a structural schematic diagram of a support assembly provided in an embodiment of this application from a second perspective;

[0023] Figure 5 This is provided by the embodiments of this application. Figure 4 A magnified structural diagram of region B in the middle;

[0024] Figure 6 This is provided by the embodiments of this application. Figure 4 A magnified structural diagram of region C in the middle;

[0025] Figure 7 This is a schematic diagram of the structure of a battery module provided in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Battery module;

[0028] 10. Bracket assembly; 11. First bracket; 111. First sub-bracket; 1111. First mounting slot; 1112. Second main body; 1113. Second adapter; 1114. Third mounting slot; 1115. Third through hole; 1116. First connecting hole; 112. Second sub-bracket; 1121. Fourth mounting slot; 1122. Second connecting post; 12. Second bracket; 121. First main body; 1211. First through hole; 1212. Second through hole; 1213. Fourth through hole; 1214. Limiting part; 1215. Mounting part; 1216. Second mounting slot; 122. First adapter; 1221. First connecting post;

[0029] 20. Battery pack;

[0030] 30. First temperature sensor;

[0031] 40. Second temperature sensor;

[0032] 50. Collect the wire harness;

[0033] 60. Adapter;

[0034] 70. Busbar; 71. Second connecting hole; 72. Waist-shaped hole. Detailed Implementation

[0035] 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, and 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.

[0036] First, this application provides a support assembly 10, please refer to... Figure 1 , Figure 2 and Figure 7 The bracket assembly 10 is used for the battery module 1. The battery module 1 includes a battery pack 20, which is composed of multiple individual cells connected in series or in parallel. Each individual cell can be a cylindrical cell. Each individual cell has two terminals. The battery pack 20 as a whole also has two terminals, namely the first terminal and the second terminal.

[0037] It should be noted that the first electrode and the second electrode can refer to the positive and negative output terminals of the battery pack 20 as a whole, or they can refer to the two electrode terminals of a single cell in the battery pack 20. That is, the positive and negative output terminals of the battery pack 20 as a whole can be located on the side where the first electrode is located or the side where the second electrode is located, or they can be located on the side where the first electrode is located and the side where the second electrode is located, respectively. No special limitation is made in the embodiments of this application.

[0038] The support assembly 10 includes a first support 11 and a second support 12. The first support 11 includes a first sub-support 111 and a second sub-support 112 connected to each other. The first sub-support 111 is disposed on the side surface of the battery pack 20, and the second sub-support 112 is disposed on the first terminal of the battery pack 20. The second support 12 is connected to the first support 11 and is at least partially disposed on the second terminal of the battery pack 20. That is, the second support 12 and the second sub-support 112 are respectively disposed on the two terminals of the battery pack 20 to facilitate the placement of the busbar 70, which is used to connect individual batteries in series or parallel to form the battery pack 20. The first sub-support 111 being disposed on the side surface of the battery pack 20 facilitates the placement of structures such as the acquisition harness 50.

[0039] It should be noted that the second bracket 12 is used to be at least partially disposed on the second terminal of the battery pack 20. This means that the second bracket 12 can be disposed only on the second terminal of the battery pack 20, or it can be partially disposed on the second terminal and partially disposed on the side surface of the battery pack 20. The specific arrangement can be adjusted according to the connection method between the second bracket 12 and the first bracket 11 and the structural requirements. No special limitation is made here.

[0040] In the embodiments of this application, by combining the first bracket 11 and the second bracket 12, and setting the first sub-bracket 111 of the first bracket 11 on the side surface of the battery pack 20, setting the second sub-bracket 112 of the first bracket 11 on the first terminal of the battery pack 20, and setting the second bracket 12 at least partially on the second terminal of the battery pack 20, the first bracket 11 can be used to support the acquisition harness 50 and part of the busbar 70 in the battery module 1, while the second bracket 12 can be used to support the output busbar 70 of the battery module 1. The second bracket 12 and the first bracket 11 are set separately, that is, the second bracket 12 and the first bracket 11 are independent of each other, so that by adjusting the molding process, material and size of the first bracket 11 and the second bracket 12, the overall production cost and weight of the bracket assembly 10 can be reduced while ensuring a stable connection between the battery module 1 and the external structure.

[0041] In some embodiments, the first support 11 includes a vacuum-formed support and the second support 12 includes a plastic support. That is, the first support 11 is made by vacuum forming and the second support 12 is made by injection molding. Due to the different principles of the molding processes, the first support 11 is thinner and lighter and has a lower cost, while the second support 12 has higher strength.

[0042] By combining the blister bracket 11 with the plastic bracket 12, and placing the blister bracket 11 on the side surface of the battery pack 20 and the first terminal of the battery pack 20, and placing the plastic bracket 12 at least partially on the second terminal of the battery pack 20, the blister bracket 11 can be used to support the acquisition harness 50 and part of the busbar 70 in the battery module 1, thereby reducing the use of the plastic bracket 12 and reducing the production cost and weight of the bracket assembly 10; at the same time, the plastic bracket 12 with high structural strength can be used to support the output busbar 70 of the battery module 1, so as to ensure a stable connection between the battery module 1 and the external structure.

[0043] In some embodiments, please refer to Figure 4 and Figure 5 The first sub-support 111 has a first mounting groove 1111 on the side facing the battery pack 20. The first mounting groove 1111 is used to mount the first temperature sensor 30. Since the first sub-support 111 is part of the first support 11, the first mounting groove 1111 can be formed simultaneously on the side of the first sub-support 111 facing the battery pack 20 during vacuum forming. This allows the first temperature sensor 30 to be located on the side surface of the battery pack 20 after being mounted in the first mounting groove 1111, so as to facilitate temperature monitoring of the battery pack 20. The position of the first mounting groove 1111 can be adjusted according to actual monitoring needs. For example, the first mounting groove 1111 can be set near the middle area of ​​the battery pack 20 to monitor the temperature at the middle position of the battery pack 20.

[0044] It should be noted that the first mounting slot 1111 provides a fixed space and protection for the first temperature sensor 30, preventing damage to the first temperature sensor 30 in complex environments, such as from impacts, compression, or wear. This design helps extend the service life of the first temperature sensor 30 and ensures its long-term stable operation. Furthermore, by fixing the first temperature sensor 30 in the first mounting slot 1111, measurement errors caused by movement or vibration of the first temperature sensor 30 can be reduced. The design of the first mounting slot 1111 also reduces the influence of the external environment on the first temperature sensor 30, such as temperature gradients and airflow, thereby improving the accuracy and stability of the measurement.

[0045] The first mounting groove 1111 has an arc-shaped surface that connects to the first temperature sensor 30. The diameter of the circle containing the arc-shaped surface is greater than or equal to 4 mm and less than or equal to 8 mm. For example, the diameter of the circle containing the arc-shaped surface can be set to 4 mm, 6 mm, or 8 mm. The arc-shaped surface design makes the contact between the first temperature sensor 30 and the first mounting groove 1111 more compact and uniform, thereby enhancing the stability of the connection. This tight connection helps reduce the risk of the first temperature sensor 30 loosening or falling off due to vibration or impact. Simultaneously, the arc-shaped surface design may help optimize the heat conduction path, enabling the first temperature sensor 30 to receive and transfer heat more efficiently. This helps improve the accuracy and response speed of temperature measurement, especially in applications requiring rapid response to temperature changes.

[0046] Furthermore, compared to flat or right-angled surfaces, curved surfaces can distribute stress more evenly at the connection point, thereby reducing the risk of stress concentration. This helps extend the service life of the first temperature sensor 30 and the first mounting groove 1111, avoiding damage caused by long-term stress concentration. The curved surface design may make it easier to align and secure the first temperature sensor 30 with the first mounting groove 1111 during installation. In addition, this design allows for fine-tuning within a certain range to ensure optimal connection between the first temperature sensor 30 and the first mounting groove 1111. The diameter of the circle containing the curved surface is between 4mm and 8mm, a range that can be suitable for various sizes of first temperature sensors 30, thus meeting the needs of different application scenarios and improving the compatibility and versatility of the device.

[0047] In some embodiments, please refer to Figure 3 and Figure 5The second bracket 12 has a first through hole 1211, which extends through the second bracket 12 along its thickness direction. The first through hole 1211 allows the data acquisition harness 50 of the first temperature sensor 30 to pass through. Since the first temperature sensor 30 is located on the side of the first sub-bracket 111 facing the battery pack 20, leading the data acquisition harness 50 directly out from the second bracket 12 avoids the need for opening a hole in the first bracket 11, thus helping to ensure the structural strength of the first bracket 11 itself. Compared to the first bracket 11, the second bracket 12 is heavier and stronger. Opening the first through hole 1211 in the second bracket 12 has minimal impact on its structural strength and also reduces the overall weight of the bracket assembly 10.

[0048] It should be noted that a wire guide groove can also be provided on the side of the first sub-support 111 facing the battery pack 20. The wire guide groove is used to accommodate the data acquisition harness 50 of the first temperature sensor 30. The wire guide groove provides a dedicated channel for the data acquisition harness 50 of the first temperature sensor 30, avoiding the risk of damage to the data acquisition harness 50 in complex environments, such as wear, tear, or compression. By fixing the data acquisition harness 50 in the wire guide groove, the possibility of the data acquisition harness 50 becoming loose or broken due to movement or vibration can be reduced. At the same time, the wire guide groove helps to keep the data acquisition harness 50 neater and more organized. This not only improves the aesthetics of the device but also reduces the operational or maintenance difficulties caused by a messy data acquisition harness 50.

[0049] Secondly, the data acquisition harness 50 of the first temperature sensor 30 may generate some heat. The wire channel guides the heat from the data acquisition harness 50, allowing it to dissipate more effectively and preventing localized overheating from affecting the performance of the first temperature sensor 30. Furthermore, the design of the wire channel can also consider heat dissipation requirements, such as adding heat dissipation holes or using heat-dissipating materials, to further improve heat dissipation efficiency. In some applications with complex electromagnetic environments, the data acquisition harness 50 of the first temperature sensor 30 may be subject to electromagnetic interference. By fixing the data acquisition harness 50 in the wire channel and taking appropriate shielding measures (such as using a shielded harness or filling the wire channel with shielding material), the impact of electromagnetic interference on the performance of the first temperature sensor 30 can be reduced.

[0050] Furthermore, the cable tray design makes it easier to align and secure the data acquisition harness 50 of the first temperature sensor 30 during installation. This not only reduces installation difficulty but also improves installation efficiency. During maintenance, the cable tray also makes the data acquisition harness 50 easier to access and inspect, facilitating timely detection and troubleshooting. As a supporting structure for the data acquisition harness 50 of the first temperature sensor 30, the cable tray enhances the stability of the overall structure. Especially under vibration or impact environments, the cable tray effectively reduces the swaying and displacement of the data acquisition harness 50, thereby protecting the integrity of the first temperature sensor 30 and the data acquisition harness 50.

[0051] In some embodiments, please refer to Figure 2 The second bracket 12 includes a first main body 121 and a first adapter 122 connected to each other. The first main body 121 is used to be disposed at the second terminal of the battery pack 20, and the first adapter 122 is used to be disposed on the side surface of the battery pack 20. The first adapter 122 is connected to the first sub-bracket 111. That is, the first main body 121 is mainly used to support the series and parallel connection of the battery module 1 and the output bus 70 to ensure the stable connection between the battery module 1 and the external structure. By disposing of the first adapter 122 on the side surface of the battery pack 20, it helps in the connection design between the second bracket 12 and the first sub-bracket 111, and also allows the first adapter 122 to provide a certain degree of support for the first sub-bracket 111, thereby improving the overall structural strength of the bracket assembly 10.

[0052] In some embodiments, please refer to Figure 4 and Figure 6 The first main body 121 has a mounting portion 1215 protruding on the side facing the battery pack 20. The mounting portion 1215 has a second mounting groove 1216 for mounting the second temperature sensor 40. Since the first main body 121 is located at the second terminal of the battery pack 20, the mounting portion 1215 protruding on the first main body 121 allows the second temperature sensor 40 to be positioned close to the end of a single battery cell in the battery pack 20 to monitor the temperature of the end of the single battery cell. Through the cooperation of the second temperature sensor 40 and the first temperature sensor 30, the temperature at different locations in the battery pack 20 can be monitored simultaneously, thereby helping to improve the safety of the battery module 1.

[0053] It should be noted that by placing the second temperature sensor 40 in the second mounting groove 1216 of the mounting part 1215, the mounting part 1215 can also provide a certain degree of protection for the second temperature sensor 40, thereby reducing the risk of damage to the second temperature sensor 40 during use.

[0054] In some embodiments, a second through hole 1212 is provided on the first main body 121, extending through the first main body 121 along its thickness direction. The second through hole 1212 is used for the data acquisition harness 50 of the second temperature sensor 40 to pass through. Since the second temperature sensor 40 is located on the side of the first sub-support 111 facing the battery pack 20, leading the data acquisition harness 50 of the second temperature sensor 40 directly out from the second support 12 avoids the need to create a hole in the first support 11, thereby helping to ensure the structural strength of the first support 11 itself. Compared to the first support 11, the second support 12 is heavier and stronger. Creating a second through hole 1212 in the second support 12 has little impact on the structural strength of the second support 12 itself and can also reduce the overall weight of the support assembly 10.

[0055] In some embodiments, please refer to Figure 2 and Figure 3 The first sub-support 111 includes a second main body 1112 and a second adapter 1113 connected to each other. The second main body 1112 is connected to the second sub-support 112, and the second adapter 1113 is connected to the first adapter 122. The second main body 1112 is used to mount the adapter 60 of the battery module 1. Since the first sub-support 111 is part of the first support 11, the first support 11 is thinner than the second support 12. The first sub-support 111 is located on the side surface of the battery pack 20. By mounting the adapter 60 of the battery module 1 on the first sub-support 111, the space utilization rate of the battery module 1 in the thickness direction of the first sub-support 111 can be improved, thereby helping to improve the energy density of the battery module 1.

[0056] In some examples, please refer to Figure 2 The second adapter 1113 is provided with one of the first connecting post 1221 or the first connecting hole 1116, and the first adapter 122 is provided with the other of the first connecting post 1221 or the first connecting hole 1116. The first connecting post 1221 and the first connecting hole 1116 are connected by thermal riveting to connect the second adapter 1113 and the first adapter 122. This connection method is simpler and faster than bolting or welding, and installation can be completed without complicated tools and steps, thus helping to reduce installation time and costs and improve work efficiency. Through precise thermal riveting, accurate alignment and tight connection between the second adapter 1113 and the first adapter 122 can be ensured. This high-precision connection also helps to reduce loosening and deformation of the connection parts, improving the stability and reliability of the entire system.

[0057] In some examples, please refer to Figure 3The second main body 1112 has a third mounting groove 1114 on the side opposite to the battery pack 20. The third mounting groove 1114 is used to install the adapter 60. That is, when the first sub-support 111 is formed, the third mounting groove 1114 can be formed simultaneously on the side of the second main body 1112 opposite to the battery pack 20. By placing the adapter 60 in the third mounting groove 1114, the increase in height of the battery module 1 in the thickness direction of the first sub-support 111 caused by the installation of the adapter 60 can be further reduced, thereby improving the space utilization rate of the battery module 1 in the thickness direction of the first sub-support 111 and thus improving the energy density of the battery module 1.

[0058] In some embodiments, please refer to Figure 5 The second main body 1112 has a third through hole 1115. The third through hole 1115 penetrates the second main body 1112 along the thickness direction of the second main body 1112. The third through hole 1115 is used for the acquisition cable 50 to pass through and connect to the adapter 60. Since the second sub-support 112 is located at the first terminal of the battery pack 20, and the second sub-support 112 is used to support the busbar 70, when the battery pack 20 is assembled into the battery module 1, the data acquisition harness 50 is connected to the busbar 70 to monitor the voltage of the battery pack 20. The second main body 1112 is used to support the corresponding data acquisition harness 50. By providing a third through hole 1115 on the second main body 1112, the data acquisition harness 50 can be routed from the busbar 70 located at the first terminal to the side of the second main body 1112 away from the battery pack 20, and then through the third through hole 1115 to the side of the second main body 1112 facing the battery pack 20, and then to connect with the adapter 60. This allows the data acquisition harness 50 to be partially hidden on the side of the second main body 1112 facing the battery pack 20, reducing the risk of interference between the data acquisition harness 50 and other external structures, and improving the monitoring stability of the data acquisition harness 50.

[0059] In some examples, a fourth through hole 1213 is provided on the first main body 121. The fourth through hole 1213 penetrates the first main body 121 along its thickness direction. The third through hole 1115 and the fourth through hole 1213 are used for the data acquisition harness 50 to pass through sequentially and connect to the adapter 60. That is, after the data acquisition harness 50 is routed from the busbar 70 located at the first terminal end to the side of the second main body 1112 away from the battery pack 20, it can be routed through the third through hole 1115 to the side of the second main body 1112 facing the battery pack 20, then through the fourth through hole 1213 to the side of the first main body 121 away from the battery pack 20, and then to the side of the second main body 1112 away from the battery pack 20 and connected to the adapter 60. The cooperation of the third through hole 1115 and the fourth through hole 1213 allows the acquisition harness 50 to be partially hidden on the side of the second main body 1112 facing the battery pack 20, reducing the risk of interference between the acquisition harness 50 and other external structures. At the same time, it also prevents the acquisition harness 50 from bending directly on the side of the second main body 1112 away from the battery pack 20, thereby improving the monitoring stability of the acquisition harness 50.

[0060] In some embodiments, please refer to Figure 3 A limiting part 1214 protrudes from the side of the first main body 121 opposite to the battery pack 20. The orthographic projection of the limiting part 1214 on the first main body 121 is at least partially located within the fourth through hole 1213. That is, after the data acquisition harness 50 passes through the third through hole 1115 and the fourth through hole 1213 in sequence, the limiting part 1214 will limit the data acquisition harness 50 to improve the orderliness of the data acquisition harness 50 on the side of the first main body 121 opposite to the battery pack 20. At the same time, the limiting part 1214 can also play a certain protective role for the data acquisition harness 50, reduce the risk of interference between the data acquisition harness 50 and the external structure, and thus improve the monitoring stability of the data acquisition harness 50.

[0061] In some embodiments, please refer to Figure 4 The second sub-support 112 has a fourth mounting groove 1121 on the side opposite to the battery pack 20. The fourth mounting groove 1121 is used to set the data acquisition harness 50. Since the second sub-support 112 is located at the first terminal of the battery pack 20, the second sub-support 112 is used to support the busbar 70. When the battery pack 20 is assembled into the battery module 1, the data acquisition harness 50 is connected to the busbar 70 to monitor the voltage of the battery pack 20. By setting the fourth mounting groove 1121 on the side of the second sub-support 112 opposite to the battery pack 20, the data acquisition harness 50 can be arranged along the fourth mounting groove 1121, which helps to improve the orderliness of the data acquisition harness 50 on the second sub-support 112, thereby improving the monitoring stability of the data acquisition harness 50.

[0062] In some embodiments, the thickness of the first bracket 11 is greater than or equal to 0.5 mm and less than or equal to 0.8 mm. If the thickness of the first bracket 11 is too large, it will result in an excessive weight of the first bracket 11, which will lead to a large overall weight of the battery module 1 and affect the energy density of the battery module 1; if the thickness of the first bracket 11 is too small, it will result in a low structural strength of the first bracket 11, which will lead to poor overall structural stability of the bracket assembly 10.

[0063] In the actual manufacturing process, the thickness of the first support 11 can be set to 0.5mm, 0.6mm, 0.7mm or 0.8mm, etc. The specific value of its thickness can be selected and adjusted according to the actual design requirements. As long as the first support 11 has sufficient structural strength while reducing the weight of the first support 11, no special limitation is made here.

[0064] In some embodiments, the thickness of the second bracket 12 is greater than or equal to 1 mm and less than or equal to 2 mm. If the thickness of the second bracket 12 is too large, it will result in an excessive weight of the second bracket 12, which will lead to a large overall weight of the battery module 1 and affect the energy density of the battery module 1; if the thickness of the second bracket 12 is too small, it will result in an insufficient structural strength of the second bracket 12, which will lead to poor overall structural stability of the bracket assembly 10.

[0065] In the actual manufacturing process, the thickness of the second support 12 can be set to 1mm, 1.2mm, 1.5mm, 1.8mm or 2mm, etc. The specific value of its thickness can be selected and adjusted according to the actual design requirements. As long as the second support 12 has sufficient structural strength while reducing the weight of the second support 12, no special limitation is made here.

[0066] Secondly, this application embodiment also provides a battery module, which includes the above-mentioned bracket assembly. The specific structure of the bracket assembly is as described in the above embodiments. Since this battery module adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0067] Please see Figure 7 The battery module 1 includes a bracket assembly 10 and a battery pack 20. The battery pack 20 is disposed within the area enclosed by the bracket assembly 10. The bracket assembly 10 includes a first bracket 11 and a second bracket 12. The first bracket 11 includes a first sub-bracket 111 and a second sub-bracket 112 that are connected to each other. The first sub-bracket 111 is disposed on the side surface of the battery pack 20. The second sub-bracket 112 is disposed on the first terminal of the battery pack 20. The second bracket 12 is connected to the first bracket 11 and is used to at least partially dispose on the second terminal of the battery pack 20. The second bracket 12 and the first bracket 11 are separately disposed.

[0068] By combining the first bracket 11 and the second bracket 12, and setting the first sub-bracket 111 of the first bracket 11 on the side surface of the battery pack 20, setting the second sub-bracket 112 of the first bracket 11 on the first terminal of the battery pack 20, and setting the second bracket 12 at least partially on the second terminal of the battery pack 20, the first bracket 11 can be used to support the acquisition harness 50 and part of the busbar 70 in the battery module 1, while the second bracket 12 can be used to support the output busbar 70 of the battery module 1. The second bracket 12 and the first bracket 11 are set separately, that is, the second bracket 12 and the first bracket 11 are independent of each other. By adjusting the molding process, material and size of the first bracket 11 and the second bracket 12, the overall production cost and weight of the bracket assembly 10 can be reduced while ensuring a stable connection between the battery module 1 and the external structure.

[0069] The battery module 1 also includes a first temperature sensor 30 and a second temperature sensor 40. Both the first temperature sensor 30 and the second temperature sensor 40 are located on the side of the first sub-support 111 facing the battery pack 20. The first temperature sensor 30 is used to monitor the temperature at the middle position of the battery pack 20, and the second temperature sensor 40 is used to monitor the temperature at the end position of the battery pack 20. Through the cooperation of the first temperature sensor 30 and the second temperature sensor 40, the reliability of temperature monitoring of the battery pack 20 can be improved, thereby ensuring the safety of the battery module 1 in use.

[0070] The specific configuration of the first temperature sensor 30 and the second temperature sensor 40 can be referred to the relevant descriptions in the above embodiments, and will not be repeated here.

[0071] The battery module 1 also includes an adapter 60 and a data acquisition harness 50. The data acquisition harness 50 is used to acquire temperature and voltage signals from the battery pack 20 to monitor the operating status of the battery module 1. The adapter 60 is located on the side of the first sub-support 111 facing away from the battery pack 20. The adapter 60 is connected to the data acquisition harness 50 and is used to connect to external devices to output the temperature and voltage signals acquired by the data acquisition harness 50, thereby realizing real-time monitoring of the operating status of the battery module 1.

[0072] The battery module 1 also includes a busbar 70, which is disposed on the second bracket 12 and the second sub-bracket 112. The busbar 70 is used to electrically connect with the individual cells in the battery pack 20 to realize the series and parallel connection between the individual cells, thereby forming the battery pack 20.

[0073] In some embodiments, the second sub-support 112 is provided with one of a second connecting post 1122 or a second connecting hole 71, and the busbar 70 is provided with the other of a second connecting post 1122 or a second connecting hole 71. The second connecting post 1122 and the second connecting hole 71 are thermally riveted together to connect the second sub-support 112 to the busbar 70. This connection method is simpler and faster than bolting or welding, and installation can be completed without complicated tools and steps, thereby helping to reduce installation time and costs and improve work efficiency. Through precise plug-in mating, accurate alignment and tight connection between the second sub-support 112 and the busbar 70 can be ensured. This high-precision connection helps to reduce loosening and deformation of the connection parts and improves the stability and reliability of the entire system.

[0074] The diameter of the second connecting post 1122 is greater than or equal to 3.5 mm and less than or equal to 5.5 mm. For example, it can be set to 3.5 mm, 4 mm, 4.5 mm, 5 mm or 5.5 mm, so that the second connecting post 1122 can provide sufficient structural strength to support and fix the connected components. This strength ensures the reliability and stability of the connection, especially under dynamic loads or vibrations. The appropriate diameter also makes the second connecting post 1122 easier to operate during installation and disassembly.

[0075] In some embodiments, the second connecting post 1122 protrudes from the second connecting hole 71 along its own axial direction by a distance between 1.5mm and 3.5mm, such as 1.5mm, 2mm, or 3.5mm. Within this range, the second connecting post 1122 can be securely inserted into the second connecting hole 71, ensuring the stability and reliability of the connection. This secure connection helps prevent loosening or failure due to vibration, impact, or load variations. An appropriate protrusion distance provides a certain gap between the second connecting post 1122 and the second connecting hole 71, which is beneficial for accommodating tolerances, avoiding interference fits, and reducing assembly stress. This gap also helps reduce thermal expansion and contraction caused by temperature changes, thereby maintaining the stability of the connection.

[0076] In some embodiments, the busbar 70 is provided with a waist-shaped hole 72, and the busbar 70 is welded to the individual battery through the waist-shaped hole 72. The waist-shaped hole 72 helps to observe the state of the individual battery terminals and prevents the individual battery terminals from deflecting during the welding process.

[0077] Finally, this application also proposes a battery pack, which includes the aforementioned battery module. The specific structure of the battery module is described in the above embodiments. Since this battery pack adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated upon here.

[0078] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A support assembly, characterized in that, For a battery module, the battery module including a battery pack, the bracket assembly including: The first support includes a first sub-support and a second sub-support that are connected to each other. The first sub-support is used to be disposed on the side surface of the battery pack, and the second sub-support is used to be disposed on the first terminal of the battery pack. The second bracket is connected to the first bracket and is used to at least partially occupy the second terminal of the battery pack. The second bracket is separate from the first bracket.

2. The support assembly according to claim 1, characterized in that, The first bracket includes a blister bracket, and the second bracket includes a plastic bracket.

3. The support assembly according to claim 1, characterized in that, The first sub-bracket has a first mounting slot on the side facing the battery pack, and the first mounting slot is used to install the first temperature sensor.

4. The support assembly according to claim 3, characterized in that, The first mounting slot has an arcuate surface connected to the first temperature sensor, and the diameter of the circle containing the arcuate surface is greater than or equal to 4 mm and less than or equal to 8 mm.

5. The support assembly according to claim 1, characterized in that, The second bracket includes a first main body and a first adapter connected to each other. The first main body is disposed at the second terminal of the battery pack, and the first adapter is disposed on the side surface of the battery pack. The first adapter is connected to the first sub-bracket.

6. The support assembly according to claim 5, characterized in that, The first main body has a mounting portion protruding on the side facing the battery pack, and the mounting portion has a second mounting groove for mounting a second temperature sensor.

7. The support assembly according to claim 5, characterized in that, The first sub-bracket includes a second main body and a second adapter that are connected to each other. The second main body is connected to the second sub-bracket, and the second adapter is connected to the first adapter. The second main body is used to set the adapter of the battery module.

8. The support assembly according to any one of claims 1-7, characterized in that, The thickness of the first bracket is greater than or equal to 0.5 mm and less than or equal to 0.8 mm; and / or, the thickness of the second bracket is greater than or equal to 1 mm and less than or equal to 2 mm.

9. A battery module, characterized in that, Includes the support assembly as described in any one of claims 1-8.

10. A battery pack, characterized in that, Includes the battery module as described in claim 9.

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