Battery module and battery pack

Abstract

The utility model discloses a battery module and a battery pack, the battery module comprises a module main body, a cover plate and a glue blocking assembly, the module main body comprises a plurality of single batteries, the plurality of single batteries are arranged at intervals along a first direction, and a gap is formed between two adjacent single batteries; the cover plates are arranged on two opposite sides of the module main body in the second direction and are connected with the module main body; the glue blocking assemblies are arranged on the two opposite sides of the module body in the third direction and connected with the module body. The glue blocking assembly comprises a first glue blocking strip, and the first glue blocking strip covers the gap and is connected with the single battery; by arranging the first glue blocking strip, glue can be effectively prevented from overflowing, the risk of short circuit is reduced, and the safety of the battery module is improved.

Description

Technical Field

[0001] This application belongs to the field of power battery technology, specifically relating to a battery module and battery pack. Background Technology

[0002] Currently, with the iterative updates of technology, modules are trending towards larger sizes, and correspondingly, the busbar support assembly, which serves as the sampling / series / parallel connection cell for the module, is also undergoing a size-up trend. As the module structure continues to evolve, problems are also emerging.

[0003] First, due to the increasing size of modules, the crossbeams of the casing generally need to extend through the lower half of the module to meet the structural strength requirements of the entire package. This means that the FPC (Flexible Printed Circuit) cannot be fully placed on the lower half of the module. Second, to reduce costs, unassembled force modules have emerged. Unassembled force modules have less filler between the cells, making excess adhesive unavoidable. Utility Model Content

[0004] This application provides a battery module designed to overcome the technical problem of easy glue overflow caused by gaps between cells in current non-assembled power modules; another objective of this application is to provide a battery pack.

[0005] Embodiments of this application provide a battery module having intersecting first, second, and third directions, the battery module comprising:

[0006] The module body includes multiple individual battery cells, which are spaced apart along the first direction, with a gap between adjacent two individual battery cells.

[0007] A cover plate is disposed on both opposite sides of the module body in the second direction and is connected to the module body;

[0008] A sealant assembly is disposed on two opposing sides of the module body on the third-party side and connected to the module body; the sealant assembly includes a first sealant strip, which covers the gap and is connected to the individual battery cell.

[0009] In some embodiments, the battery module further includes:

[0010] End plate heat insulation pads are disposed at opposite ends of the module body in the first direction and are connected to the module body;

[0011] The busbar bracket assembly is disposed on both sides of the module body in the second direction, and is located between the cover plate and the module body, and is connected to the module body.

[0012] In some embodiments, the adhesive blocking assembly further includes a second adhesive blocking strip, which is disposed along the first direction on the side of the first adhesive blocking strip opposite to the module body, connected to all the first adhesive blocking strips, and connected to the module body;

[0013] The first baffle strip includes a baffle portion and a guide portion connected together. The two ends of the baffle portion overlap one of the single cells and are connected to two adjacent single cells. The guide portion extends into the gap in a direction away from the baffle portion.

[0014] The side of the adhesive-blocking part opposite to the guide part is connected to the second adhesive-blocking strip.

[0015] In some embodiments, the battery module further includes an explosion-proof valve disposed at the bottom of the module body.

[0016] In some embodiments, the busbar support assembly includes:

[0017] A vacuum forming bracket is disposed on the side of the module body facing the cover plate and is connected to the module body;

[0018] A busbar is located on the side of the blister pack that is away from the main body of the module and is connected to the blister pack;

[0019] A flexible circuit board is disposed on the side of the busbar away from the vacuum forming bracket and is connected to the busbar;

[0020] Temperature-sensitive brackets are spaced apart on the busbar, and the busbar presses the temperature-sensitive brackets onto the blister pack. The temperature-sensitive brackets are connected to the busbar and the blister pack respectively, and a temperature sensor is installed on the temperature-sensitive bracket.

[0021] In some embodiments, the blister bracket has a clearance groove, the clearance groove being positioned corresponding to the temperature sensing bracket, and the temperature sensor passing through the clearance groove and abutting against the module body.

[0022] In some embodiments, the busbar support assembly further includes a rib, which is disposed on the blister bracket to separate the busbar from the temperature-sensing bracket.

[0023] In some embodiments, the bus support assembly further includes a bridging bus that is connected to two of the buses;

[0024] The bridging bus includes two copper busbars and an aluminum busbar, the two copper busbars are connected through the aluminum busbar, and each of the two copper busbars is connected to one of the busbars.

[0025] In some embodiments, the aluminum busbar includes:

[0026] The bent portion is located between the two copper busbars;

[0027] The connecting part is located on both sides of the bent part and is connected to the copper busbar.

[0028] The battery module of this application embodiment includes a module body, a cover plate, and a sealant assembly. The module body includes multiple individual cells, which are spaced apart along a first direction, with gaps between adjacent individual cells. The cover plate is disposed on opposite sides of the module body in a second direction and connected to the module body. The sealant assembly is disposed on opposite sides of the module body in a third direction and connected to the module body. The sealant assembly includes a first sealant strip that seals the gaps and is connected to the individual cells. In this embodiment, the first sealant strip improves safety. Adhesive overflow between adjacent individual cells may cause short circuits, leading to overheating, combustion, or even explosion of the individual cells. By setting the first sealant strip, adhesive overflow can be effectively prevented, reducing the risk of short circuits and improving the safety of the battery module. In this embodiment, the first sealant strip protects battery performance. Adhesive overflow between adjacent individual cells may affect the normal operation and performance of the individual cells. The presence of adhesive may cause uneven current distribution between individual cells, affecting the charge / discharge performance and cycle life of the individual cells. The first adhesive strip effectively isolates adjacent individual cells, preventing interference from the adhesive and protecting the battery's performance and lifespan.

[0029] The battery pack of this application embodiment includes the battery module as described in the above embodiments. Therefore, it can have all the technical features and effects of the above-described battery module, which will not be repeated here. Attached Figure Description

[0030] 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.

[0031] Figure 1 This is an exploded structural diagram of the battery module provided in an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the overall structure of the battery module provided in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the overall structure of the adhesive barrier assembly provided in the embodiments of this application;

[0034] Figure 4Provided for the embodiments of this application Figure 3 Enlarged view of a portion of point A in the middle;

[0035] Figure 5 Provided for the embodiments of this application Figure 3 Enlarged view of a section at point B in the middle;

[0036] Figure 6 A cross-sectional structural diagram of one embodiment of the first sealing strip provided in this application;

[0037] Figure 7 This is a schematic diagram of the installation position of the explosion-proof valve provided in an embodiment of this application;

[0038] Figure 8 An exploded view of the busbar support assembly provided in the embodiments of this application;

[0039] Figure 9 Provided for the embodiments of this application Figure 8 Enlarged view of a section at point C;

[0040] Figure 10 This is a diagram showing the installation state of the temperature sensing bracket provided in an embodiment of this application;

[0041] Figure 11 This is an exploded view of the bridging bus provided in an embodiment of this application;

[0042] Figure 12 The diagram shows the output bus connection status of the dual-battery module solution provided in this application embodiment.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1-First battery module; 2-Second battery module; 3-First output bus; 4-Second output bus; 5-Bus base;

[0045] 10-Module body; 11-Single battery cell; 12-Gap;

[0046] 20-Cover plate;

[0047] 30 - Adhesive blocking assembly; 31 - First adhesive blocking strip; 311 - Adhesive blocking part; 312 - Guide part; 313 - Clearance part; 32 - Second adhesive blocking strip;

[0048] 40-Endplate heat insulation pad;

[0049] 50-Busbar bracket assembly; 51-Blister bracket; 511-Allowing groove; 52-Busbar; 53-Flexible circuit board; 54-Temperature sensor bracket; 55-Rib; 56-Bridging busbar; 561-Copper busbar; 5611-Mounting hole; 562-Aluminum busbar; 5621-Bending part; 5622-Connecting part; 56221-Allowing hole; 57-Hot riveting post; 58-Blister bracket snap-fit ​​structure;

[0050] 60 - Explosion-proof valve. Detailed Implementation

[0051] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. In the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0053] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of exemplary embodiments and may not be to scale. The modules or processes shown in the drawings are not necessarily essential for implementing this application and therefore should not be used to limit the scope of protection of this application.

[0054] As a preamble to the embodiments of this application, with the increasing number of new energy vehicles on the market, various consumer groups are paying more and more attention to the overall performance of electric vehicles, especially the driving range. As the main carrier of battery energy and energy density, a single battery cell can theoretically improve the driving range of an electric vehicle if there are enough cells. However, the design of power batteries is subject to limitations. Therefore, determining the technology to ensure relatively high energy capacity and energy density within the limited space for battery placement is crucial for improving the driving range of electric vehicles.

[0055] To address these issues, battery cell integration methods have undergone innovations from CTM (cell-to-module) to CTP (cell-to-pack), CTC (cell-to-frame), and CTB (cell-to-body), reducing intermediate structural components between individual cells and the battery pack, thereby improving pack assembly efficiency, space utilization, and energy density. However, with the iterative updates of CTP, CTC, and CTB technologies, modules are trending towards larger sizes, and correspondingly, the busbar support assembly, which serves as the sampling / series / parallel connection point for the modules, is also undergoing a size-up trend. As module structures continue to evolve, problems are also emerging.

[0056] First, due to the increasing size of modules, the crossbeams of the casing generally need to extend through the lower half of the module to meet the structural strength requirements of the entire package, preventing the FPC from being fully placed on the lower half of the module. Second, to reduce costs, unassembled force modules have emerged. In unassembled force modules, the filler between cells is reduced, making excess adhesive unavoidable.

[0057] In view of this, embodiments of this application provide a battery module aimed at solving at least some of the above-mentioned technical problems.

[0058] Please see Figure 1 and Figure 2 , Figure 1 This is an exploded view of the battery module provided in an embodiment of this application. Figure 2This is a schematic diagram of the overall structure of the battery module provided in an embodiment of this application. One battery module in this embodiment can be a non-packing force module. Non-packing force modules directly install the cells into the PACK using stacking fixtures, resulting in lower costs and better module consistency. The battery module has intersecting first direction X, second direction Y, and third direction Z. The battery module includes a module body 10, a cover plate 20, and a sealant assembly 30. Specifically: the module body 10 includes multiple individual cells 11, which are spaced apart along the first direction X, with a gap 12 between adjacent individual cells 11; the cover plate 20 is disposed on opposite sides of the module body 10 in the second direction Y and connected to the module body 10; the sealant assembly 30 is disposed on opposite sides of the module body 10 in the third direction Z and connected to the module body 10; the sealant assembly 30 includes a first sealant strip 31, which seals the gap 12 and is connected to the individual cell 11.

[0059] It should be noted that in the accompanying drawings of the embodiments of this application, the arrow marked X represents the first direction X, the arrow marked Y represents the second direction Y, and the arrow marked Z represents the third direction Z. The description of this application introduces the first direction X, the second direction Y, and the third direction Z to more clearly illustrate the structure and relative positional relationship of each component in the battery module. In practical applications, the first direction X, the second direction Y, and the third direction Z can point to any direction in space. In some embodiments, in the battery module, the first direction X corresponds to the length direction of the battery module, the second direction Y and the third direction Z intersect, and the second direction Y is the width direction of the battery module, and the third direction Z is the height direction of the battery module. Optionally, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other. The battery module needs to be filled with adhesive on its top and bottom surfaces. Due to the existence of the gap 12, the adhesive can enter between adjacent individual cells 11 through the gap 12. This may lead to waste of adhesive, short circuits between individual cells 11, and a decrease in the performance of individual cells 11. The function of the first adhesive strip 31 is to seal the gap 12 and effectively prevent adhesive from overflowing between adjacent individual cells 11.

[0060] It should be noted that the module body 10 consists of individual battery cells 11 and filler material (aerogel, etc.) between the individual battery cells 11, and is divided into two parts. The crossbeam of the lower casing of the battery pack runs through the middle of the module body 10. The terminals on the individual battery cells 11 are located in the lower half of the individual battery cells 11, and the temperature sensing position is located at the opening in the middle of the individual battery cells 11. The specific structure of the module body 10 is a feature of existing technology and will not be described in detail in this embodiment. The overall structure of the battery module is simple, and it can simultaneously meet multiple functional requirements such as cycle life, insulation, and thermal runaway protection, while reducing manufacturing costs and simplifying the process.

[0061] In view of this, the first adhesive strip 31 in this embodiment improves safety. Adhesive overflow between adjacent individual cells 11 may cause a short circuit between the cells 11, leading to safety issues such as overheating, combustion, or even explosion. By setting the first adhesive strip 31, adhesive overflow can be effectively prevented, reducing the risk of short circuits and improving the safety of the battery module. In this embodiment, the first adhesive strip 31 protects battery performance. Adhesive overflow between adjacent individual cells 11 may affect the normal operation and performance of the individual cells 11. The presence of adhesive may cause uneven current distribution between individual cells 11, affecting the charge / discharge performance and cycle life of the individual cells 11. The first adhesive strip 31 can effectively isolate adjacent individual cells 11, preventing adhesive interference and protecting battery performance and lifespan.

[0062] In some embodiments, the battery module further includes end plate heat insulation pads 40 and busbar bracket assembly 50, wherein: the end plate heat insulation pads 40 are disposed at opposite ends of the module body 10 in a first direction X and connected to the module body 10; the busbar bracket assembly 50 is disposed on opposite sides of the module body 10 in a second direction Y, and is located between the cover plate 20 and the module body 10, and connected to the module body 10. The busbar bracket assembly 50 and the module body 10 can be connected by welding.

[0063] It should be noted that the end plate heat insulation pad 40 is located at the end of the battery module and serves as heat insulation. The battery generates heat during charging and discharging, and the end plate heat insulation pad 40 reduces heat conduction within the battery module, preventing heat loss to the external environment. This helps improve the thermal management of the battery module, maintains a stable operating temperature range, and reduces the impact of heat on battery performance and lifespan. The busbar bracket assembly 50 is used to distribute the current in the battery module. The busbar bracket assembly 50 connects the positive and negative terminals in the battery module, guiding current from individual battery cells to external circuits or other components. Through the busbar bracket assembly 50, the current in the battery module can be effectively distributed and transmitted, ensuring the normal operation of the battery module.

[0064] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 , Figure 3 This is a schematic diagram of the overall structure of the adhesive-blocking assembly provided in an embodiment of this application. The adhesive-blocking assembly 30 also includes a second adhesive-blocking strip 32, which is disposed along the first direction X on the side of the first adhesive-blocking strip 31 opposite to the module body 10, connected to all the first adhesive-blocking strips 31, and connected to the module body 10. Please refer to... Figure 4 , Figure 4 Provided for the embodiments of this application Figure 3A partial enlarged view at point A. The first sealing strip 31 includes a sealing portion 311 and a guide portion 312 connected together. The two ends of the sealing portion 311 overlap with a single cell 11 and are connected to two adjacent single cells 11. The guide portion 312 extends away from the sealing portion 311 into the gap 12. The side of the sealing portion 311 away from the guide portion 312 is connected to the second sealing strip 32. Please refer to [link / reference]. Figure 5 and Figure 6 , Figure 5 Provided for the embodiments of this application Figure 3 Enlarged view of a section at point B in the middle. Figure 6 This is a cross-sectional structural view of one embodiment of the first retaining strip provided in this application. The first retaining strip 31 also includes an avoidance portion 313, such as... Figure 6 As shown, there may be other structures in the gap 12. In order to avoid these structures, a clearance part 313 can be provided at the connection between the adhesive blocking part 311 and the guide part 312 to avoid other structures in the gap 12.

[0065] It should be noted that while the first adhesive strip 31 can prevent adhesive from overflowing into the gap 12, it cannot prevent adhesive from overflowing from both sides of the module body 10 in the second direction Y. Therefore, a second adhesive strip 32 is provided to effectively block the adhesive on the top or bottom surface of the module body 10. The adhesive-blocking part 311 can cover the gap 12 to prevent adhesive from overflowing into the gap 12. To facilitate the installation of the adhesive-blocking part 311, a guide part 312 is provided. The guide part 312 can extend into the gap 12. When installing the adhesive-blocking assembly 30, it is only necessary to align the guide part 312 with the gap 12, without needing to calibrate the position of the adhesive-blocking part 311.

[0066] It should be noted that the second strip 32 can be made of EPDM or silicone rubber, which are easy to extrude and have a certain degree of elasticity. The second strip 32 has a PC strip (polycarbonate) with double-sided adhesive on the back. The PC strip has a certain structural strength, and the double-sided adhesive ensures reliable bonding with the second strip 32. After extrusion, the second strip 32 is cut into sections and then positioned using tooling to achieve bonding with the PC strip while ensuring assembly accuracy.

[0067] Specifically, the adhesive blocking assembly 30 located below the module body 10 is placed at the bottom of the tooling before the battery modules are stacked. During the stacking of the battery modules, the double-sided adhesive on the PC strip and the individual battery 11 are bonded together to fix the first adhesive blocking strip 31. The adhesive blocking assembly 30 located above the module body 10 is installed after the battery modules are put into the box. The first adhesive blocking strip 31 corresponds one-to-one with the gap 12, and the whole assembly can be completed.

[0068] In some embodiments, please refer to Figure 7 , Figure 7This is a schematic diagram showing the installation position of the explosion-proof valve provided in this embodiment. The battery module also includes an explosion-proof valve 60, which is disposed at the bottom of the module body 10. In existing systems, the explosion-proof valve 60 and the terminal post are located on the same side, requiring heat-resistant materials such as mica to be bonded between the cover plate 20 and the module body 10. In this embodiment, the explosion-proof valve 60 is disposed at the bottom of the module body 10, and the gas released by the explosion-proof valve 60 can be directly discharged along the battery pack casing. Therefore, it is not necessary to use heat-resistant materials such as mica for bonding, thereby reducing the manufacturing cost of the battery module.

[0069] In some embodiments, please refer to Figure 8 , Figure 8 This is an exploded view of the busbar bracket assembly provided in an embodiment of this application. The busbar bracket assembly 50 includes a vacuum forming bracket 51, a busbar 52, a flexible circuit board 53, and a temperature sensing bracket 54, wherein: the vacuum forming bracket 51 is disposed on the side of the module body 10 facing the cover plate 20 and is connected to the module body 10; the busbar 52 is disposed on the side of the vacuum forming bracket 51 away from the module body 10 and is connected to the vacuum forming bracket 51; the flexible circuit board 53 is disposed on the side of the busbar 52 away from the vacuum forming bracket 51 and is connected to the busbar 52; the temperature sensing brackets 54 are spaced apart on the busbar 52, and the busbar 52 presses the temperature sensing brackets 54 onto the vacuum forming bracket 51. The temperature sensing brackets 54 are connected to the busbar 52 and the vacuum forming bracket 51 respectively, and a temperature sensor is installed on the temperature sensing bracket 54.

[0070] It should be noted that the temperature sensing bracket 54 is connected to the busbar 52 and the blister pack bracket 51 via hot-riveting posts 57, which connect the blister pack bracket 51, the temperature sensing bracket 54, and the busbar 52. The busbar 52 presses down on the temperature sensing bracket 54, effectively fixing the temperature sensor. The flexible circuit board 53 is located on the side of the busbar 52 away from the blister pack bracket 51, eliminating the need to avoid the crossbeams of the battery pack housing. This results in a smaller overall width of the flexible circuit board 53, higher panel utilization, and the ability to implement FDC (Fast Discharge Capability) solutions, thereby reducing the cost of the battery module.

[0071] In some embodiments, please refer to Figure 9 and Figure 10 , Figure 9 Provided for the embodiments of this application Figure 8 Enlarged view of a section at point C. Figure 10This is a diagram showing the installation state of the temperature-sensing bracket provided in this embodiment. The blister bracket 51 has a clearance groove 511, which corresponds to the placement position of the temperature-sensing bracket 54. The temperature sensor passes through the clearance groove 511 and abuts against the module body 10. This embodiment ensures that the temperature sensor can accurately monitor the temperature changes of the battery module, while avoiding interference between the temperature-sensing bracket 54 and the blister bracket 51. Through this structural design, the temperature sensor can be effectively fixed in the battery module and maintain close contact with the module body, thereby improving the accuracy and response speed of temperature monitoring. In addition, the presence of the clearance groove 511 makes the installation of the entire component more flexible, ensuring the stability and functionality of the temperature-sensing bracket 54 and the temperature sensor. This design not only optimizes the internal layout of the battery module but also improves its overall performance and safety.

[0072] In some embodiments, such as Figure 9 and Figure 10 As shown, the busbar bracket assembly 50 also includes a rib 55, which is disposed on the blister bracket 51 to isolate the busbar 52 and the temperature sensing bracket 54. The rib 55 isolates the busbar 52 and the temperature sensing bracket 54, preventing direct contact and avoiding heat transfer from the busbar to the temperature sensor location via the temperature sensing bracket 54, thus preventing impact on measurement accuracy. Specifically, this embodiment, through this isolation design, effectively prevents heat generated by the busbar 52 from being transferred to the temperature sensor location via the temperature sensing bracket 54. This design is crucial for maintaining the measurement accuracy of the temperature sensor, as it avoids temperature measurement errors caused by heat transfer. By ensuring that the temperature sensor is not affected by the heat from the busbar 52, the rib 55 helps maintain the accuracy and reliability of the battery module's temperature monitoring system. This structural design not only improves the performance of the battery module but also enhances its safety and stability.

[0073] In some embodiments, please refer to Figure 8 and Figure 11The busbar bracket assembly 50 also includes a bridging busbar 56, which connects to two busbars 52. The bridging busbar 56 comprises two copper busbars 561 and an aluminum busbar 562. The two copper busbars 561 are connected via the aluminum busbars 562, and each copper busbar 561 is connected to one busbar 52. Because there is a channel in the middle of the battery module through which the battery pack's housing beam passes, the busbar bracket assembly 50 also needs to avoid the battery pack's housing beam at the corresponding location. The design of the bridging busbar 56 is precisely to solve this problem. Through the bridging busbar 56, the battery pack's housing beam can be avoided, while multiple busbars 52 are connected together. This design not only ensures the flexibility and adaptability of the battery module's internal structure but also guarantees the integrity and reliability of the electrical connections. Through a reasonable combination of materials and structural design, the bridging busbar 56 effectively supports the overall function and performance of the battery module.

[0074] Specifically, the aluminum busbar 562 includes a bent portion 5621 and a connecting portion 5622. The bent portion 5621 is located between the two copper busbars 561; the connecting portion 5622 is located on both sides of the bent portion 5621 and connects to the copper busbars 561. It should be noted that the bent portion 5621 can increase the expansion and contraction of the bridging busbar 56, absorbing the dimensional changes caused by the expansion of the individual battery 11. The connecting portion 5622 is thinned to reduce the overall thickness of the bridging busbar 56, and it is also the welding area for the copper busbars 561 and the aluminum busbar 562. The connecting portion 5622 has a clearance hole 56221 to facilitate the insertion of the hot riveting post 57 and to ensure that the head of the hot riveting post 57 does not extend beyond the clearance hole 56221. The clearance hole 56221 can accommodate the head of the hot-riveting post 57, reducing the overall size of the busbar bracket assembly 50. It also cooperates with the mounting hole 5611 on the copper busbar 561 to achieve the connection between the bridging busbar 56 and the blister bracket 51. This composite structure of the bridging busbar 56 can increase the current carrying capacity of the busbar bracket assembly 50, reduce the overall internal resistance of the busbar bracket assembly 50, and thus reduce the heat generation and temperature rise of the busbar bracket assembly 50, effectively protecting the connected individual battery cells 11.

[0075] In some embodiments, the busbar bracket assembly 50 further includes a blister bracket snap-fit ​​structure 58, which is disposed at the bottom of the blister bracket 51 and snaps into the busbar 52. This effectively fixes and prevents rotation of the busbar 52, while also providing a certain degree of insulation protection. The blister bracket snap-fit ​​structure 58 can also snap into the jumper busbar 56, effectively fixing and preventing rotation of the jumper busbar 56, while also providing a certain degree of insulation protection.

[0076] In some embodiments, please refer to Figure 12 , Figure 12This diagram illustrates the output busbar connection status of a dual-battery module solution provided in this application. In the dual-battery module solution, one battery module is a first battery module 1, and the other is a second battery module 2. The first battery module 1 has a first output busbar 3, and the second battery module 2 has a second output busbar 4. The first output busbar 3 is connected to a busbar support assembly 50 on the first battery module 1, and the second battery module 2 is connected to the busbar support assembly 50 on the second battery module 2. The second output busbar 4 is connected to a busbar base 5, which is located on an end plate heat insulation pad 40. Two busbar bases 5 are located on the end plate heat insulation pad 40, each connecting to its adjacent first battery module 1 and second battery module 2. The first output busbar 3 and the second output busbar 4 are riveted together. This connection method reduces the number of bases and copper busbars at the battery module output positions, thus lowering costs and saving space in the battery pack layout.

[0077] This application also discloses a battery pack, including the single battery cells as described in the above embodiments. Therefore, it can possess all the technical features and effects of the aforementioned single battery cells, which will not be repeated here.

[0078] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0079] The battery module and battery pack provided in the embodiments of this application have been described in detail above, and 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 technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery module, characterized by, The battery module has a first direction (X), a second direction (Y) and a third direction (Z) intersecting with each other, and comprises: a module body comprising a plurality of single batteries, the plurality of single batteries being arranged at intervals along the first direction (X) and having a gap between adjacent two single batteries; a cover plate arranged on opposite sides of the module body in the second direction (Y) and connected with the module body; a glue blocking assembly arranged on opposite sides of the module body in the third direction (Z) and connected with the module body; the glue blocking assembly comprises a first glue blocking strip, the first glue blocking strip covers the gap and is connected with the single battery.

2. The battery module of claim 1, wherein, The battery module further comprises: an end plate heat insulation pad arranged at opposite ends of the module body in the first direction (X) and connected with the module body; a busbar support assembly arranged on opposite sides of the module body in the second direction (Y) and located between the cover plate and the module body, and connected with the module body.

3. The battery module of claim 1 or 2, wherein The glue blocking assembly further comprises a second glue blocking strip, the second glue blocking strip is arranged on a side of the first glue blocking strip away from the module body along the first direction (X), connected with all the first glue blocking strips, and connected with the module body; The first glue blocking strip comprises a glue blocking part and a guide part connected with each other, the glue blocking part is overlapped on one single battery at both ends and connected with adjacent two single batteries, and the guide part extends into the gap away from the glue blocking part; The side of the glue blocking part away from the guide part is connected with the second glue blocking strip.

4. The battery module of claim 1 or 2, wherein The battery module further comprises an explosion-proof valve arranged at the bottom of the module body.

5. The battery module of claim 2, wherein, The busbar support assembly comprises: a plastic suction support arranged on a side of the module body facing the cover plate and connected with the module body; a busbar arranged on a side of the plastic suction support away from the module body and connected with the plastic suction support; a flexible circuit board arranged on a side of the busbar away from the plastic suction support and connected with the busbar; a temperature sensing support arranged at intervals on the busbar, the busbar presses the temperature sensing support on the plastic suction support, the temperature sensing support is connected with the busbar and the plastic suction support respectively, and a temperature sensor is installed on the temperature sensing support.

6. The battery module of claim 5, wherein, The plastic suction support has a avoiding groove corresponding to the arrangement position of the temperature sensing support, and the temperature sensor penetrates the avoiding groove and abuts against the module body.

7. The battery module of claim 6, wherein, The busbar support assembly further comprises a protruding rib arranged on the plastic suction support to separate the busbar and the temperature sensing support.

8. The battery module of any one of claims 5 to 7, wherein, The busbar support assembly further comprises a cross busbar, the cross busbar is connected with two busbars; The cross busbar comprises two copper bars and an aluminum bar, the two copper bars are connected through the aluminum bar, and the two copper bars are respectively connected with one busbar.

9. The battery module of claim 8, wherein, The aluminum bar comprises: a bending part between the two copper bars; a connecting part located on both sides of the bending part and connected with the copper bars.

10. A battery pack, characterized by, A battery module including any one of the above claims 1 to 9. A battery module including any one of the above claims 1 to 9.

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