Soft package battery module for two-wheeled vehicle and battery pack

Abstract

The utility model belongs to the field of batteries, and discloses a soft package battery module and a battery pack for a two-wheeled vehicle, which comprise a battery core stacking body, a support frame, a sampling plate and a tab welding support piece, the supporting frame is arranged at one end, provided with the battery cell tabs, of the battery cell stacking body; the tab welding supporting piece is arranged at one end, far away from the battery cell stacking body, of the supporting frame; and at least one positioning column is arranged on the support frame and is used for clamping the tab welding support piece. According to the utility model, the positioning column is arranged on the supporting piece, so that the tab welding supporting piece can be placed at a preset position, thereby being beneficial to avoiding the deviation or dislocation of the battery cell tab in the process of welding the battery cell tab to the tab welding supporting piece, ensuring that the battery cell tab is welded at a correct position, and improving the stability and the accuracy of welding.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and in particular to a soft-pack battery module and a battery pack for a two-wheeled vehicle. Background Art

[0002] In recent years, lithium batteries have been widely used in new energy vehicles, energy storage and other fields. In the field of two-wheeled vehicles, due to the small size of the battery compartment and the requirement for the battery pack to have as much power as possible, under the same conditions, due to the characteristics of the soft-pack battery structure and process, the soft-pack lithium battery has a higher energy density than the square and cylindrical batteries, making it widely used in the field of two-wheeled vehicle batteries.

[0003] In the prior art, the bare battery cells formed after lamination or winding are generally directly transported to the next workstation on the assembly line, and then workers are required to manually press down the welding parts before welding the tabs to the welding parts. This method is not only inefficient, but also manual pressing of the welding parts can easily lead to excessive deviation of the welding position during the welding of the tabs, resulting in unstable welding structure. Utility Model Content

[0004] The main purpose of the present application is to provide a soft-pack battery module and battery pack for a two-wheeled vehicle, aiming to solve the technical problem that existing welded parts need to be manually pressed.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a soft-pack battery module for a two-wheeled vehicle, including a battery cell stack, a support frame, a sampling plate and a tab welding support;

[0006] The support frame is arranged at one end of the battery cell stack body where the battery cell tab is arranged;

[0007] The tab welding support is arranged at one end of the support frame away from the battery cell stack;

[0008] The support frame is provided with at least one positioning column for clamping the tab welding support.

[0009] Furthermore, the support frame is provided with a first through slot for the power supply core tab to pass through, the upper surface of the side wall of the first through slot serves as a support platform for the tab welding support, positioning columns are provided at both ends of the support platform, and the tab welding support is provided with a hole or a slot to be clamped with the positioning column;

[0010] The battery cell tab passes through the first through slot of the support frame and is connected to the tab welding support by laser welding.

[0011] Furthermore, the tab welding support is provided with a first through hole, and an end away from the first through hole is provided with a first groove and a second groove;

[0012] The positioning column includes a first positioning column passing through the first through hole, a second positioning column clamped in the first groove, and a third positioning column clamped in the second groove.

[0013] Furthermore, the end of the support frame is also provided with a current-passing member parallel to the tab welding support member, and the current-passing member is connected to the cell tab by laser welding;

[0014] One end of the flow member close to the second positioning column and the third positioning column extends to form a flow sheet, and a second through hole is provided on the flow sheet. The flow sheet is connected to the support frame by screws through the second through hole and the threaded hole provided on the support frame.

[0015] Furthermore, the battery module also includes a sampling plate, which is fixedly connected to the support frame through a first fixing column, and the sampling plate is also connected to the flow-through member through laser welding.

[0016] Furthermore, the sampling plate comprises a sampling plate body, and a notch is formed at the ends of the sampling plate body and the tab welding support that are parallel to each other, and the flow sheet of the flow member is placed in the notch of the sampling plate body.

[0017] Furthermore, the sampling plate also includes a sampling welding piece welded by optical fiber at the ends of the sampling plate body and the pole tab welding support that are perpendicular to each other, and the sampling welding piece is connected to the battery cell pole tab connected to the pole tab welding support by laser welding.

[0018] Furthermore, a first fixing hole is provided at one end of the sampling plate body close to the notch, and a second fixing hole corresponding to the first fixing hole is provided on the first fixing column of the support frame, and the sampling plate body is connected to the support frame by screws through the first fixing hole and the second fixing hole.

[0019] Furthermore, a fixing bracket connected to the supporting frame is provided at one end of the sampling plate body away from the supporting frame, a side connection of the fixing bracket is concave toward the supporting frame to form a fixing sheet, and a side connection of the supporting frame is convex toward the fixing bracket to form a second fixing column.

[0020] Furthermore, the fixing plate is provided with a third fixing hole extending therethrough, and the second fixing column is provided with a fourth fixing hole corresponding to the third fixing hole, and the fixing bracket is connected to the support frame with screws through the third fixing hole and the fourth fixing hole.

[0021] Furthermore, the fixed bracket is provided with a second through groove corresponding to the sampling plate, the edge of the second through groove extends away from the support frame to form an inclined block, and the end of the inclined block away from the fixed bracket is rounded to form an arc surface.

[0022] Furthermore, a hanging block is provided on the fixing bracket, and a third through slot is provided on the hanging block.

[0023] The utility model also proposes a battery pack, comprising the soft-pack battery module for a two-wheeled vehicle as described in any of the above items, and also comprising a battery management system and a battery pack shell, the sampling plate of the soft-pack battery module for a two-wheeled vehicle is connected to the battery management system through a second through groove, and the battery module is installed in the battery pack shell through the lifting block.

[0024] Beneficial effects:

[0025] The utility model provides a positioning column on the support member so that the pole ear welding support member can be placed in a predetermined position, thereby helping to avoid the battery cell pole ear from being offset or misaligned during the process of welding to the pole ear welding support member, ensuring that the battery cell pole ear is welded in the correct position, and improving the stability and accuracy of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an overall schematic diagram of a battery module according to an embodiment of the present utility model;

[0027] Figure 2 This is an overall schematic diagram of a support frame according to an embodiment of the utility model;

[0028] Figure 3 This is a partial enlarged view of the battery module A of an embodiment of the present utility model;

[0029] Figure 4 This is an overall schematic diagram of a sampling plate according to an embodiment of the utility model;

[0030] Figure 5 This is an overall schematic diagram of a fixing bracket according to an embodiment of the utility model;

[0031] Figure 6 It is a partial enlarged view of the support frame as a whole at B in one embodiment of the utility model.

[0032] in:

[0033] 1-battery cell stack; 2-support frame; 3-sampling plate; 4-ear welding support; 5-battery cell ear; 10-first through slot; 11-support platform; 12-first through hole; 20-first positioning column; 21-second positioning column; 22-third positioning column; 30-first groove; 31-second groove; 32-first fixing column; 41-flow member; 42-flow sheet; 42-second through hole; 50-sampling plate body; 51-notch; 52-sampling welding sheet; 53-first fixing hole; 54-second fixing hole; 60-fixing bracket; 61-fixing sheet; 62-second fixing column; 70-third fixing hole; 71-fourth fixing hole; 72-second through slot; 73-tilting block; 74-arc surface; 80-lifting block; 81-third through slot; 13-third groove; 14-foam.

[0034] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] Reference Figure 1 A soft-pack battery module for a two-wheeled vehicle comprises a battery cell stack 1, a support frame 2, a sampling plate 3 and a tab welding support 4; the support frame 2 is arranged at one end of the battery cell stack 1 where a battery cell tab 5 is arranged; the tab welding support 4 is connected to the end of the support frame 2 away from the battery cell stack 1; at least one positioning column is arranged on the support frame 2 for clamping the tab welding support 4.

[0040] In the above embodiment, the battery module includes a battery cell stack 1, a support frame 2, a sampling plate 3 and a tab welding support 4, and the support frame 2 is arranged at one end of the battery cell stack 1 where the battery cell tab 5 is arranged. On the one hand, the battery module is more firm and reliable during use, the structural stability of the battery cell stack 1 is improved, and the battery cell stack 1 is effectively prevented from loosening or being damaged during vibration or transportation. On the other hand, the battery cell tab 5 is prevented from being deformed or damaged by external impact or pressure, thereby extending the service life of the battery cell stack 1. Further, the tab welding support 4 is connected to the end of the support frame 2 away from the battery cell stack 1, which effectively improves the stability of the battery cell tab 5 during welding. The sampling plate 3 is arranged at the end of the tab welding support 4 away from the support frame 2, and at least one positioning column is arranged on the support frame 2 for clamping the tab welding support 4, which can ensure the precise positioning of the tab welding support 4 and make the installation process simpler. The battery tab 5 is welded to the tab welding support frame 4, and the battery tab 5 is welded to the tab welding support frame 4. The battery tab 5 is welded to the tab welding support frame 4, and the battery tab 5 is welded to the tab welding support frame 4. The battery tab 5 is welded to the tab welding support frame 4, and the battery tab 5 is welded to the tab welding support frame 4. The battery tab 5 is welded to the tab welding support frame 4, and the battery tab 5 is welded to the tab welding support frame 4. The tab welding support frame 4 ...

[0041] Reference Figure 1 , Figure 2 and Figure 6 The support frame 2 is provided with a first through slot 10 through which the power supply core tab 5 passes, and the upper surface of the side wall of the first through slot 10 serves as a support platform 11 for the tab welding support 4. Positioning columns are provided at both ends of the support platform 11, and a hole or a groove is provided on the tab welding support 4 to engage with the positioning column;

[0042] The cell tab 5 passes through the first through slot 10 of the support frame 2 and is connected to the tab welding support 4 by laser welding.

[0043] In the above embodiment, the support frame 2 is provided with a first through groove 10 for the power cell pole ear 5 to pass through. By providing the first through groove 10, electrical isolation is effectively achieved between the multiple battery cell pole ears 5 to avoid short circuit or other problems. In addition, the upper surface of the side wall of the first through groove 10 is used as the support platform 11 of the pole ear welding support 4 to ensure that a stable supporting foundation is provided when the pole ear welding support 4 is installed in the first through groove 10, so that the pole ear welding support 4 maintains a stable position during use. Further, positioning columns are provided at both ends of the support platform 11, so that the pole ear welding support 4 can be more firmly and stably located in the first through groove 10, and holes or grooves are provided on the pole ear welding support 4 to communicate with the The positioning column is clamped, which can achieve a more secure connection between the pole lug welding support 4 and the positioning column, thus ensuring that the pole lug welding support 4 will not loosen or lose stability during use, and ensuring that when the pole lug welding support 4 is placed on the support platform 11, the top surface of the pole lug welding support 4 is basically parallel to the top surface of the support frame 2, effectively improving the stability of the overall structure of the battery module and the space utilization rate, and then when the battery cell pole lug 5 passes through the first through groove 10 of the support frame 2, the battery cell pole lug 5 is laser welded to the pole lug welding support 4 on the support platform 11, so that the connection between the battery cell stack 1 and the support frame 2 is more secure, achieving electrical isolation between the battery cell pole lugs 5, and ensuring the safety performance of the battery cell stack 1.

[0044] Reference Figure 1-Figure 3 In one embodiment, the tab welding support 4 is provided with a first through hole 12 therethrough, and an end away from the first through hole 12 is provided with a first groove 30 and a second groove 31;

[0045] The positioning column includes a first positioning column 20 passing through the first through hole 12 , a second positioning column 21 clamped in the first groove 30 , and a third positioning column 22 clamped in the second groove 31 .

[0046] In the above embodiment, the tab welding support 4 is provided with a first through hole 12, and the end away from the first through hole 12 is provided with a first groove 30 and a second groove 31, so that the end of the tab welding support 4 away from the first through hole 12 forms an I-shaped structure, so that the load is evenly distributed in the tab welding support 4, reducing local stress and improving the stability of the tab welding support 4, and the positioning column includes a first positioning column 20 passing through the first through hole 12, and the diameter of the first through hole 12 is slightly larger than the diameter of the first positioning column 20, so that the first positioning column 20 is installed During the assembly process, it is convenient to pass through the first through hole 12, and the pole lug welding support 4 can be accurately positioned on the supporting platform 11, ensuring that the assembly process is more accurate and convenient. In addition, the positioning column also includes a second positioning column 21 clamped in the first groove 30 and a third positioning column 22 clamped in the second groove 31. The second positioning column 21 and the third positioning column 22 are respectively clamped in the first groove 30 and the second groove 31, so that the pole lug welding support 4 is accurate during installation and positioning, and the pole lug welding support 4 is easier and faster to assemble, which is beneficial to improving production efficiency and saving assembly time.

[0047] Therefore, when installing the pole lug welding support 4, align the first through hole 12 on the pole lug welding support 4 with the first positioning column 20 on the support platform 11, and at the same time align the first groove 30 and the second groove 31 with the second positioning column 21 and the third positioning column 22, and then slightly apply downward force to accurately position and install the pole lug welding support 4 on the support platform 11, so that the pole lug welding support 4 is installed more firmly on the support frame 2, thereby improving the assembly efficiency.

[0048] Reference Figure 1-Figure 3 In one embodiment, the end of the support frame 2 is further provided with a current-passing member 41 which is parallel to the tab welding support member 4, and the current-passing member 41 is connected to the cell tab 5 by laser welding;

[0049] The flow member 41 extends from one end close to the second positioning column 21 and the third positioning column 22 to form a flow sheet 42, and a second through hole 43 is provided on the flow sheet 42. The flow sheet 42 is connected to the support frame 2 by screws through the second through hole 43 and the threaded hole provided on the support frame 2.

[0050] In the above embodiment, the end of the support frame 2 is also provided with a current-passing piece 41 which is parallel to the pole ear welding support 4, and the current-passing piece 41 is respectively connected to the battery cell pole ear 5 and the sampling plate 3, so as to effectively detect the change of current in the circuit, and ensure that once the current-passing piece 41 detects an abnormal excessive current, it can quickly cut off the circuit, thereby effectively preventing the battery module from being damaged or malfunctioning due to excessive current, and the current-passing piece 41 is connected to the battery cell pole ear 5 by laser welding, thereby ensuring a firm connection between the current-passing piece 41 and the battery cell pole ear 5, and being able to withstand stresses such as high current and vibration. Further, the overcurrent piece 41 is extended from one end close to the second positioning column 21 and the third positioning column 22 to form an overcurrent sheet 42, so that the contact area of ​​the overcurrent sheet 42 on the support frame 2 is larger, thereby improving the firmness of the overcurrent sheet 42 connected to the support frame 2, and a second through hole 43 is provided on the overcurrent sheet 42, so that the overcurrent sheet 42 is connected to the support frame 2 with screws through the second through hole 43 and the threaded hole set in the support frame 2. Therefore, when connecting the overcurrent sheet 42 and the support frame 2, the screw connection method can make the overcurrent sheet 42 tightly connected to the support frame 2, thereby enhancing the stability and rigidity of the overall structure, reducing the risk of failure caused by the looseness of the overcurrent sheet 42 when the sampling plate 3 and the battery cell pole ear 5 are connected to the overcurrent piece 41. Further, the screw connection can not only fix the overcurrent sheet 42, but also serve as a current conduction channel, ensuring that the current can smoothly pass through the overcurrent sheet 42 and the sampling plate 3, thereby ensuring the normal operation of the battery module.

[0051] Reference Figure 1-Figure 4 In one embodiment, the battery module further includes a sampling plate 3, the sampling plate 3 is fixedly connected to the support frame 2 via a first fixing column 32, and the sampling plate 3 is also connected to the flow-through member 41 via laser welding.

[0052] In the above embodiment, the battery module also includes a sampling plate 3, and the sampling plate 3 is preferably arranged in the middle position of the support frame 2, so that the sampling plate 3 can be conveniently welded to the battery cell ear 5 passing through the support frame 2, effectively reducing the welding difficulty, and also facilitating the sampling plate 3 to collect various data of the battery cell stack 1, and further, the sampling plate 3 is fixedly connected to the support frame 2 through the first fixing column 32, and the first fixing column 32 is arranged in the middle of the support frame 2 and close to one end of the second positioning column 21 and the third positioning column 22, the support frame 2 is divided into two symmetrical parts with the first fixing column 32 as the symmetry axis, and the setting point of the first fixing column 32 corresponds to the installation position of the sampling plate 3, so that additional support and fixing points can be provided on the support frame 2, which helps to reduce the looseness and swing of the connection part, so the sampling plate 3 is connected to the support frame 2 through the first fixing column 32, which ensures the stability and reliability of the connection between the sampling plate 3 and the support frame 2, and on the other hand, due to the first fixing column 3 2 is relatively fixed, which can realize accurate positioning of the support frame 2 and the sampling plate 3, ensure the correct position and direction of the sampling plate 3 during assembly, and improve the accuracy and efficiency of assembly, and the first fixing column 32 is configured corresponding to the sampling plate 3, wherein the connection method adopts the thread set in the first fixing column 32, and the sampling plate 3 is fixed on the first fixing column 32 of the support frame 2 by using screws, thereby ensuring the stability and reliability of the connection between the sampling plate 3 and the support frame 2, on the other hand, due to the relatively fixed position of the first fixing column 32, the support frame 2 and the sampling plate 3 can be accurately positioned, ensuring the correct position and direction of the sampling plate 3 during assembly, and improving the accuracy and efficiency of assembly, further, the sampling plate 3 is also connected to the overcurrent component 41 by laser welding, so that the positive and negative poles of the sampling plate 3 are respectively welded with the overcurrent component 41, thereby ensuring the normal operation of the battery module, reducing the instability of the battery module caused by sudden overload current of the circuit, and effectively improving the reliability of the battery module.

[0053] Further, the end of the first through groove 10 near the second positioning column 21 and the third positioning column 22 is concave in the direction of the battery cell stack 1 to form a third groove 13, and the temperature-sensitive chip resistor arranged on the sampling plate 3 is installed in the third groove 13. The installation height of the sampling plate 3 is reduced by the third groove 13, which further saves the use space of the entire battery module and improves the space utilization efficiency. Therefore, when the sampling plate 3 is accurately connected to the first fixing column 32, the temperature-sensitive chip resistor arranged at one end of the sampling plate 3 near the battery cell stack 1 can just fall into the third groove 13, so that the height difference between the sampling plate 3 and the support frame 2 is small, which improves the space utilization of the battery module. The small height difference can reduce the internal stress concentration of the sampling plate 3, which is conducive to improving the stability and bearing capacity of the sampling plate 3, and makes the sampling plate 3 and the support frame 2 more flat and symmetrical, and improves the aesthetics of the assembly of the sampling plate 3.

[0054] Reference Figure 1-Figure 4 In one embodiment, the sampling plate 3 includes a sampling plate body 50 , and the sampling plate body 50 and the ends of the pole ear welding support 4 that are parallel to each other form a notch 51 , and the flow sheet 42 of the flow member 41 is placed in the notch 51 of the sampling plate body 50 .

[0055] In the above embodiment, the sampling plate 3 includes a sampling plate body 50, and a notch 51 is formed at the ends of the sampling plate body 50 and the pole ear welding support 4 that are parallel to each other. Since the sampling plate body 50 may include sensors, connectors, data acquisition chips, etc., the sampling plate body 50 can ensure that these accessories or components can be firmly installed in suitable positions through its own structural strength and stability, so that the sampling plate body 50 becomes a complete sampling system to ensure the accuracy and reliability of sampling or testing. Further, by forming a notch 51 on the sampling plate body 50, a larger operating space can be provided for the installer, which is convenient for the operator to perform related operations more easily, and the notch 51 makes the overall structural size and weight of the battery module smaller, effectively improving the space utilization efficiency.

[0056] Reference Figure 1-Figure 4 In one embodiment, the sampling plate 3 also includes a sampling welding piece 52 welded by optical fiber at the ends of the sampling plate body 50 and the pole tab welding support 4 that are perpendicular to each other, and the sampling welding piece 52 is connected to the battery cell pole tab 5 connected to the pole tab welding support 4 by laser welding.

[0057] In the above embodiment, the sampling plate 3 also includes a sampling welding piece 52 welded by optical fiber at the ends of the sampling plate body 50 and the pole ear welding support 4 that are perpendicular to each other. By performing sampling tests on multiple sampling welding pieces 52, quality problems that may exist in the welding process can be discovered in time to ensure that the welding quality meets the standard requirements. The size of the sampling welding piece 52 is substantially the same as the size of the pole ear welding support 4, so that the sampling welding piece 52 can maintain a larger contact area during the welding process, thereby improving the welding firmness. In addition, the sampling welding piece 52 is welded to the sampling plate body 50 by optical fiber welding, which can achieve very fine welding and meet the requirements of the sampling plate body. 50 The welding of fine parts has a smaller heat-affected zone during further optical fiber welding, which can reduce the deformation and thermal impact of the sampling welding piece 52 and avoid damage to the fine parts of the sampling plate body 50. Therefore, the sampling welding piece 52 is connected to the battery cell pole ear 5 connected to the pole ear welding support 4 by laser welding, so that after the battery cell pole ear 5 is contacted and welded with the sampling welding piece 52, the laser beam can generate very small welding heat after focusing, which can achieve high-precision control of the welding area and meet the high requirements for the welding quality of the battery cell pole ear 5. In addition, laser welding can be combined with automated equipment such as robots to further achieve high-efficiency production line welding and improve production efficiency.

[0058] Reference Figure 1-Figure 4 In one embodiment, a first fixing hole 53 is provided at one end of the sampling plate body 50 close to the notch 51, and a second fixing hole 54 corresponding to the first fixing hole 53 is provided on the first fixing column 32 of the support frame 2. The sampling plate body 50 is connected to the support frame 2 by screws through the first fixing hole 53 and the second fixing hole 54.

[0059] In the above embodiment, a first fixing hole 53 is provided at one end of the sampling plate body 50 close to the notch 51, and the plurality of first fixing holes 53 are preferably arranged on the center line of the sampling plate body 50 and the sampling welding piece 52 which are perpendicular to each other, so that the sampling plate body 50 is subjected to more uniform force during installation, which helps to improve the structural stability of the sampling plate body 50, and also facilitates the arrangement of the signal path of the sampling plate body 50, thereby reducing the unevenness that may occur in signal transmission. Further, a second fixing hole 54 corresponding to the first fixing hole 53 is provided on the first fixing column 32 of the support frame 2, so that the diameter of the first fixing hole 53 is the same as the diameter of the second fixing hole 54, so that the assembly of the sampling plate body 50 and the support frame 2 can be completed more accurately, effectively improving the installation The sampling plate body 50 is connected to the support frame 2 by screws through the first fixing hole 53 and the second fixing hole 54, so that when the sampling plate body 50 is installed on the support frame 2, the first fixing hole 53 and the second fixing hole 54 are aligned to be located on the same center line, and then the screw is placed in the first fixing hole 53 by threaded connection, and a downward screwing force is applied to the screw so that the screw passes through the first fixing hole 53 and enters the second fixing hole 54. Finally, after the threaded shaft part of the screw completely enters the first fixing hole 53 and the second fixing hole 54, the fixed connection between the sampling plate body 50 and the support frame 2 is completed. The screw connection makes it easier to assemble the sampling plate body 50 and the installation is completed more quickly, thereby improving production efficiency.

[0060] Reference Figure 1-Figure 5 In one embodiment, the end of the sampling plate body 50 away from the support frame 2 is provided with a fixed bracket 60 connected to the support frame 2, and the side connection of the fixed bracket 60 is concave toward the support frame 2 to form a fixed sheet 61, and the side connection of the support frame 2 is convex toward the fixed bracket 60 to form a second fixed column 62.

[0061] In the above embodiment, the end of the sampling plate body 50 away from the support frame 2 is provided with a fixing bracket 60 connected to the support frame 2. The size of the fixing bracket 60 is substantially the same as that of the support frame 2, so that the fixing bracket 60 can be better matched with the support frame 2, ensuring that the connection between the two is tighter and more stable, thereby improving the structural integrity and stability of the entire battery module, and the similar size can make the installation of the fixing bracket 60 easier, which is conducive to completing the installation work quickly and accurately. Further, the side connection of the fixing bracket 60 is concave toward the direction of the support frame 2 to form a fixing plate 61, and the thickness of the fixing plate 61 is reduced by the concave. degree, effectively reducing its own weight, thereby reducing the load of the entire system, and the thinner fixing sheet 61 requires less material, thereby reducing production costs and resource consumption in the production process, and further, the side connection of the support frame 2 protrudes toward the direction of the fixed bracket 60 to form a second fixing column 62, so that additional support and fixing points can be provided on the support frame 2, which helps to reduce the looseness and swing of the connection parts, thereby enhancing the stability and bearing capacity of the entire structure, and the raised second fixing column 62 can provide a better connection method without taking up additional space, thereby maximizing the space utilization.

[0062] Reference Figure 1-Figure 5 In one embodiment, the fixing plate 61 is provided with a third fixing hole 70 extending therethrough, and the second fixing column 62 is provided with a fourth fixing hole 71 corresponding to the third fixing hole 70 , and the fixing bracket 60 is connected to the support frame 2 by screws through the third fixing hole 70 and the fourth fixing hole 71 .

[0063] In the above embodiment, the fixing plate 61 is provided with a third fixing hole 70 that penetrates therethrough, and the second fixing column 62 is provided with a fourth fixing hole 71 corresponding to the third fixing hole 70. The diameter of the third fixing hole 70 is the same as the diameter of the fourth fixing hole 71, so that the fixing plate 61 and the support frame 2 can be assembled more accurately, effectively improving the assembly efficiency, and the fixing bracket 60 is connected to the support frame 2 by screws through the third fixing hole 70 and the fourth fixing hole 71, so that when the fixing plate 61 is installed on the support frame 2, the third fixing hole 70 and the fourth fixing hole 71 are aligned so that they are located on the same center line, and then the screw is placed in the third fixing hole 70 by threaded connection, and a downward screwing force is applied to the screw so that the screw passes through the third fixing hole 70 and enters the fourth fixing hole 71. Finally, after the threaded shaft part of the screw completely enters the third fixing hole 70 and the fourth fixing hole 71, the fixing plate 61 and the support frame 2 are fixedly connected. The screw connection makes the assembly of the fixing plate 61 easier and faster, thereby improving the production efficiency.

[0064] Reference Figure 1-Figure 5 In one embodiment, the fixed bracket 60 is further provided with a second through groove 72 corresponding to the sampling plate 3, and the edge of the second through groove 72 extends in a direction away from the support frame 2 to form an inclined block 73, and the end of the inclined block 73 away from the fixed bracket 60 is rounded to form an arc surface 74.

[0065] In the above embodiment, the fixing bracket 60 is further provided with a second through slot 72 corresponding to the sampling plate 3, and the remaining part of the sampling plate body 50 except the notches 51 on both sides is substantially the same size as the second through slot 72, so that the fixing bracket 60 can protect the sampling plate body 50 from damage while not affecting the connection between the wire harness passing through the second through slot 72 and the plate body 50, making it more convenient to connect the plate body 50 with external components, while ensuring the structural strength of the sampling plate body 50, and further extending the edge of the second through slot 72 in a direction away from the support frame 2 to form an inclined block 73, by providing the inclined block 73, the thickness at the edge of the second through slot 72 can be increased to a certain extent, thereby improving the structural strength and durability of the area, while ensuring the safety performance of the sampling plate body 50 corresponding to the second through slot 72, and the end of the inclined block 73 away from the fixing bracket 60 is rounded to form an arc surface 74, so that when the wire harness contacts the inclined block 73 when connecting the sampling plate body 50, it is effectively avoided that the sharp part of the wire harness at this position cuts the wire harness to cause battery module failure, thereby ensuring the safety performance of the battery module.

[0066] Reference Figure 1-Figure 5 In one embodiment, a hanging block 80 is further provided on the fixing bracket 60 , and a third through slot 81 is provided on the hanging block 80 .

[0067] In the above embodiment, a lifting block 80 is also provided on the fixed bracket 60, and a third through groove 81 is provided on the lifting block 80, so that multiple lifting blocks 80 are distributed at the edge of the fixed bracket 60, so that when the fixed bracket 60 is subjected to force, the stress concentration caused by the force on the middle part is effectively reduced, thereby ensuring that the sampling plate 3 is not damaged, and a third through groove 81 is provided on the lifting block 80, so that when the lifting block 80 is used to pull up the entire battery module, the third through groove 81 can provide an additional connection point for the lifting block 80, so that it can flexibly adapt to various connectors such as bolts and pins, thereby improving the diversity and scope of use, and further a foam 14 is provided around the battery cell stack 1, which effectively prevents the battery cell stack 1 from direct contact with the external metal shell or other components, reduces the risk of short circuit caused by vibration or collision, and can help fix the position of the battery cell stack 1 to prevent loosening or displacement during transportation, thereby improving the stability and reliability of the battery module.

[0068] The utility model also proposes a battery pack, comprising the soft-pack battery module for a two-wheeled vehicle as described in any of the above embodiments, and also comprising a battery management system and a battery pack shell, the sampling plate 3 of the soft-pack battery module for a two-wheeled vehicle is connected to the battery management system through a second through groove 72, and the battery module is installed in the battery pack shell through the lifting block 80.

[0069] In the above embodiment, the battery pack includes a soft-pack battery module for a two-wheeled vehicle, a battery management system and a battery pack shell, and the sampling plate 3 of the soft-pack battery module for a two-wheeled vehicle is connected to the battery management system through the second through slot 72, so that the sampling plate 3 can transmit data with the battery management system, which is helpful to monitor the status of the battery module in real time, find problems in time and make adjustments, and further install the battery module in the battery pack shell through the lifting block 80. Therefore, after the battery module is assembled, the battery module is lifted up by using a connecting piece through the third through slot 81 of the lifting block 80, and then the battery module is aligned with the opening of the battery pack shell, and the connecting piece is slowly released to allow the battery module to enter the battery pack shell, thereby completing the installation of the entire battery pack, so that the battery module can be accurately and firmly installed inside the battery pack shell, ensuring the stability and safety of the installation, further improving the installation process of the battery module into the battery pack shell can be simplified through the lifting block 80, and can reduce the impact of human factors on the installation to ensure the installation quality and consistency, and improve the automation level of battery pack production.

[0070] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A soft pack battery module for a two-wheeled vehicle, characterized in that: It includes a battery cell stack, a support frame and a tab welding support; The support frame is arranged at one end of the battery cell stack body where the battery cell tab is arranged; The tab welding support is arranged at one end of the support frame away from the battery cell stack; The support frame is provided with at least one positioning column for clamping the tab welding support.

2. The soft pack battery module for two-wheeled vehicles according to claim 1, characterized in that: The support frame is provided with a first through slot for the power supply core tab to pass through, the upper surface of the side wall of the first through slot serves as a support platform for the tab welding support, positioning columns are provided at both ends of the support platform, and the tab welding support is provided with a hole or a slot to be clamped with the positioning column; The battery cell tab passes through the first through slot of the support frame and is connected to the tab welding support by laser welding.

3. The soft pack battery module for two-wheeled vehicles according to claim 2, characterized in that: The tab welding support is provided with a first through hole extending therethrough, and an end away from the first through hole is provided with a first groove and a second groove; The positioning column includes a first positioning column passing through the first through hole, a second positioning column clamped in the first groove, and a third positioning column clamped in the second groove.

4. The soft pack battery module for two-wheeled vehicles according to claim 3, characterized in that: The end of the support frame is also provided with a current-passing member parallel to the tab welding support member, and the current-passing member is connected to the cell tab by laser welding; One end of the flow member close to the second positioning column and the third positioning column extends to form a flow sheet, and a second through hole is provided on the flow sheet. The flow sheet is connected to the support frame by screws through the second through hole and the threaded hole provided on the support frame.

5. The soft pack battery module for two-wheeled vehicles according to claim 4, characterized in that: The battery module also includes a sampling plate, which is fixedly connected to the support frame via a first fixing column, and the sampling plate is also connected to the flow-through member via laser welding.

6. The soft pack battery module for two-wheeled vehicles according to claim 5, characterized in that: The sampling plate comprises a sampling plate body, and ends of the sampling plate body and the electrode tab welding support that are parallel to each other form a notch, and the flow sheet of the flow component is located at the notch of the sampling plate body.

7. The soft pack battery module for two-wheeled vehicles according to claim 6, characterized in that: The sampling plate also includes a sampling welding piece welded by optical fiber at the ends of the sampling plate body and the tab welding support that are perpendicular to each other, and the sampling welding piece is connected to the cell tab connected to the tab welding support by laser welding.

8. The soft pack battery module for two-wheeled vehicles according to claim 7, characterized in that: A first fixing hole is provided at one end of the sampling plate body close to the notch, and a second fixing hole corresponding to the first fixing hole is provided on the first fixing column of the support frame. The sampling plate body is connected to the support frame by screws through the first fixing hole and the second fixing hole.

9. The soft pack battery module for two-wheeled vehicles according to claim 8, characterized in that: A fixing bracket connected to the supporting frame is provided at one end of the sampling plate body away from the supporting frame, the side connection of the fixing bracket is concave toward the supporting frame to form a fixing sheet, and the side connection of the supporting frame is convex toward the fixing bracket to form a second fixing column.

10. The soft pack battery module for two-wheeled vehicles according to claim 9, characterized in that: The fixing plate is provided with a third fixing hole extending therethrough, and the second fixing column is provided with a fourth fixing hole corresponding to the third fixing hole, and the fixing bracket is connected to the support frame by screws through the third fixing hole and the fourth fixing hole.

11. The soft pack battery module for two-wheeled vehicles according to claim 10, characterized in that: The fixed bracket is also provided with a second through slot corresponding to the sampling plate, the edge of the second through slot extends in a direction away from the support frame to form an inclined block, and the end of the inclined block away from the fixed bracket is rounded to form an arc surface.

12. The soft pack battery module for two-wheeled vehicles according to claim 11, characterized in that: The fixing bracket is also provided with a hanging block, and the hanging block is provided with a third through slot extending therethrough.

13. A battery pack, characterized in that: It comprises the soft-pack battery module for a two-wheeled vehicle as described in any one of claims 1 to 12, and also comprises a battery management system and a battery pack shell, the sampling plate of the soft-pack battery module for a two-wheeled vehicle is connected to the battery management system via a second through slot, and the battery module is installed in the battery pack shell via the lifting block.

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