Battery module and battery pack

Abstract

The application discloses a battery module and a battery pack. The battery module comprises a battery cell assembly and a first lead-out pole assembly. The battery cell assembly comprises a battery cell. The first lead-out pole assembly comprises a first insulating support, a first busbar and a first lead-out terminal. The first insulating support is arranged at an end of the battery cell assembly. The first busbar is arranged at a first side of the first insulating support. The first lead-out terminal is arranged at a second side of the first insulating support, which is opposite to the first side. One end of the first busbar is electrically connected with a tab of the battery cell. The other end of the first busbar is in abutment with the first lead-out terminal. The battery module and the battery pack can at least solve the problem that the tab of the battery cell and the busbar of the soft package battery module need to be welded twice in the prior art.

Description

Technical Field

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

[0002] In related technologies, when assembling pouch battery modules, due to structural defects in existing busbars, the busbar and cell tabs cannot be directly welded together. Instead, aluminum strips are used for transfer welding (i.e., transfer welding between the busbar and cell tabs) to enlarge the welding surface of the cell tabs, making it easier to weld the busbar. However, this method requires a secondary welding of the aluminum strip to the busbar after the initial welding to the cell tabs. Utility Model Content

[0003] The main objective of this application is to provide a battery module and battery pack to solve the problem that secondary welding is required between the cell tabs and the busbars in existing soft-pack battery modules.

[0004] According to one aspect of this application, a battery module is provided, comprising: Battery cell assembly, the battery cell assembly including battery cells; The first lead-out assembly includes a first insulating support, a first busbar, and a first lead-out terminal. The first insulating support is disposed at the end of the cell assembly. The first busbar is disposed on a first side of the first insulating support. The first lead-out terminal is disposed on a second side of the first insulating support opposite to the first side. One end of the first busbar is electrically connected to the tab of the cell, and the other end of the first busbar abuts against the first lead-out terminal.

[0005] Furthermore, the first lead assembly also includes a first conductive connector, which connects the first busbar and the first lead terminal to the first insulating support and electrically connects the first busbar and the first lead terminal.

[0006] Furthermore, the first insulating support extends along the length direction of the cell assembly; and / or, Along the thickness direction of the battery cell assembly, the first side and the second side are respectively located on opposite sides of the first insulating bracket, and one of the first side and the second side is provided with a mounting surface, and the other side is provided with a mounting groove.

[0007] Furthermore, the first side is provided with the mounting surface, and the second side is provided with the mounting groove. Along the width direction of the cell assembly, one end of the mounting groove is provided with a clearance opening. The first lead-out terminal is located in the mounting groove and extends at least partially from the clearance opening to the outside of the first insulating bracket. The end of the first busbar near the clearance opening is provided with a bent portion. The bent portion bends towards the first lead-out terminal and abuts against the first lead-out terminal.

[0008] Furthermore, the first lead-out terminal also includes a lead-out stud, and the first busbar also includes a clearance notch; The lead-out stud is disposed on the first lead-out terminal at one end near the clearance notch, and the clearance notch is disposed on the bend to at least avoid the lead-out stud.

[0009] Furthermore, the battery cell assembly also includes a tray, and a fixing part is provided on the first insulating bracket; The tray has a mounting cavity, the battery cell is located in the mounting cavity, and the first insulating bracket is at least partially located in the mounting cavity and connected to the tray through the fixing part.

[0010] Furthermore, the fixing part includes a first support protrusion and a second support protrusion, the first support protrusion and the second support protrusion are spaced apart along the width direction of the cell assembly, and the first support protrusion is provided with a first connecting hole, the second support protrusion is provided with a second connecting hole, and the first insulating bracket is detachably connected to the tray through the first connecting hole and the second connecting hole.

[0011] Furthermore, there is a clearance space between the first support protrusion and the second support protrusion, and the first busbar also includes a connecting portion. The electrode tab and the connecting portion are at least partially located within the clearance space, and the electrode tab is electrically connected to the connecting portion by at least one of welding, screwing, and snap-fitting.

[0012] Furthermore, the battery cell assembly includes multiple cells, and the battery module further includes a second lead electrode assembly; Along the thickness direction of the cell assembly, multiple cell assemblies are stacked sequentially, and the cell assemblies located at opposite ends of the battery module are respectively the first cell assembly and the second cell assembly. Adjacent cell assemblies are connected in series. The first lead electrode assembly is disposed on the first cell assembly and electrically connected to the first cell assembly, and the second lead electrode assembly is disposed on the second cell assembly and electrically connected to the second cell assembly.

[0013] On the other hand, this application also provides a battery pack, which includes the battery module described above.

[0014] In this application, one end of the first busbar is electrically connected to the tab of the battery cell, and the other end of the first busbar abuts against the first lead terminal. This allows the battery cell to conduct electricity to an external circuit through the first busbar and the first lead terminal, ensuring efficient power transmission within the battery module. During actual assembly, firstly, the operator can install the first insulating bracket at the end of the battery cell assembly, providing a reliable mounting position for the first busbar and the first lead terminal. Secondly, the operator can install the first busbar on the first side of the first insulating bracket and electrically connect one end of the first busbar to the tab of the battery cell (i.e., by welding or other electrical connection methods), so that components such as the first lead terminal can be electrically connected to the battery cell through the first busbar. Then, the operator can install the first lead terminal on the second side of the first insulating bracket and abut against the first busbar, thereby allowing the first lead terminal to be electrically connected to the battery cell within the battery module. Since one end of the first busbar is directly electrically connected to the tab, and the other end of the first busbar abuts against the first lead terminal, the electrical connection between the first lead terminal and the tab can be completed without secondary soldering between the tab and the first busbar. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, are illustrative and descriptive, serving to explain this application and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a structural diagram of the battery module disclosed in an embodiment of this application; Figure 2 A structural diagram of the first battery assembly disclosed in an embodiment of this application from a first-view perspective; Figure 3 A structural diagram of the first battery assembly disclosed in an embodiment of this application from a second perspective; Figure 4 An exploded view of the first battery assembly disclosed in an embodiment of this application.

[0016] The above figures include the following reference numerals: 100. Battery module; 10. Cell assembly; 11. First cell assembly; 111. Cell; 1111. Tab; 112. Tray; 1121. Mounting cavity; 12. Second cell assembly; 20. First lead assembly; 21. First insulating bracket; 2101. First side; 211. Mounting surface; 2102. Second side; 212. Mounting groove; 2121. Clearance opening; 213. Fixing part; 2131. First support protrusion; 2132. 2133, Second support protrusion; 2134, Second connection hole; 214, Clearance space; 22, First busbar; 221, Bending portion; 222, Clearance notch; 223, Connecting portion; 23, First lead-out terminal; 231, Lead-out stud; 24, First conductive connector; 30, Second lead-out electrode assembly; 31, Second insulating bracket; 32, Second busbar; 33, Second lead-out terminal; 34, Second conductive connector; 40, Stud. Detailed Implementation

[0017] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] As described in the background section, in related technologies, when assembling pouch battery modules, due to structural defects in existing busbars, the busbar and cell tabs cannot be directly welded. Instead, aluminum strips are used for transfer welding (i.e., transfer welding between the busbar and cell tabs) to enlarge the welding surface of the cell tabs, facilitating welding of the busbar. However, this method requires a secondary welding of the aluminum strip to the busbar after the initial welding to the cell tabs. Therefore, this application provides a new battery module and a battery pack including this module. This battery module solves the problem of requiring secondary welding between the cell tabs and the busbar in existing pouch battery modules. The battery module of this application will be described below with reference to the accompanying drawings.

[0021] See Figures 1 to 4 As shown, this application embodiment provides a battery module 100, which includes a cell assembly 10 and a first lead electrode assembly 20.

[0022] The battery cell assembly 10 includes a battery cell 111; the first lead-out assembly 20 includes a first insulating support 21, a first busbar 22, and a first lead-out terminal 23. The first insulating support 21 is disposed at the end of the battery cell assembly 10, the first busbar 22 is disposed on the first side 2101 of the first insulating support 21, and the first lead-out terminal 23 is disposed on the second side 2102 of the first insulating support 21 opposite to the first side 2101. One end of the first busbar 22 is electrically connected to the tab 1111 of the battery cell 111, and the other end of the first busbar 22 abuts against the first lead-out terminal 23.

[0023] In this application, one end of the first busbar 22 is electrically connected to the tab 1111 of the battery cell 111, and the other end of the first busbar 22 abuts against the first lead-out terminal 23. This allows the battery cell 111 to conduct electricity to an external circuit (not shown in the figure) through the first busbar 22 and the first lead-out terminal 23, ensuring that the battery module 100 can efficiently transmit electrical energy. During actual assembly, firstly, the operator can install the first insulating bracket 21 at the end of the battery cell assembly 10 to provide a reliable mounting position for the first busbar 22 and the first lead-out terminal 23. Secondly, the operator can install the first busbar 22 on the first side 2101 of the first insulating bracket 21 and electrically connect one end of the first busbar 22 to the tab 1111 of the battery cell 111 (i.e., by welding or other electrical connection methods), so that components such as the first lead-out terminal 23 can be electrically connected to the battery cell 111 through the first busbar 22. Then, the operator can install the first lead terminal 23 on the second side 2102 of the first insulating bracket 21 and make the first lead terminal 23 abut against the first busbar 22, thereby enabling the first lead terminal 23 to be electrically connected to the cell 111 in the battery module 100. Since one end of the first busbar 22 is directly electrically connected to the tab 1111 and the other end of the first busbar 22 abuts against the first lead terminal 23, the electrical connection between the first lead terminal 23 and the tab 1111 can be completed without secondary soldering between the tab 1111 and the first busbar 22.

[0024] In other words, compared with existing soft-pack battery modules, the battery module 100 of this application can complete the electrical connection between the first lead terminal 23 and the tab 1111 without secondary welding between the tab 1111 and the first busbar 22, and also does not require aluminum strips for transfer welding between the tab 1111 and the first busbar 22. This simplifies the manufacturing process of the battery module 100 and reduces costs.

[0025] Further, see Figures 1 to 4 As shown, the first lead-out electrode assembly 20 also includes a first conductive connector 24, which connects the first busbar 22 and the first lead-out terminal 23 to the first insulating support 21 and electrically connects the first busbar 22 and the first lead-out terminal 23.

[0026] Specifically, the first conductive connector 24 can simultaneously connect the first busbar 22 and the first lead-out terminal 23 to the first insulating bracket 21, achieving electrical connection between the first busbar 22 and the first lead-out terminal 23. This ensures stable current transmission, reduces resistance increases and heat generation caused by poor contact, and guarantees efficient operation of the battery module 100. During operation, the battery module 100 may be subjected to external forces such as vibration. The first conductive connector 24 enhances the firmness of the connection between the first busbar 22 and the first lead-out terminal 23, preventing loosening of the connection due to vibration or other factors, thereby maintaining the reliability of the electrical connection between the first busbar 22 and the first lead-out terminal 23. Simultaneously, the first conductive connector 24 connects the first busbar 22 and the first lead-out terminal 23 to the first insulating bracket 21, providing precise positioning for the first busbar 22 and the first lead-out terminal 23 on the first insulating bracket 21. This facilitates quick and accurate installation during production assembly, improving production efficiency. In addition, the first conductive connector 24 can enable the components of the first lead electrode assembly 20 to fit together more closely and form a compact structure, which is beneficial to improving the space utilization of the battery module 100 and improving the structural reliability of the first lead electrode assembly 20.

[0027] It is understood that in some embodiments, the first busbar 22 and the first lead-out terminal 23 can be fixedly connected to the first insulating bracket 21 via the first conductive connector 24 (it is emphasized here that the first busbar 22 and the first lead-out terminal 23 cannot be detached from the first insulating bracket 21). In other embodiments, the first busbar 22 and the first lead-out terminal 23 can be detachably connected to the first insulating bracket 21 via the first conductive connector 24. In this way, if any component among the first conductive connector 24, the first busbar 22, the first lead-out terminal 23, and the first insulating bracket 21 is damaged, the operator can quickly replace it, improving maintenance efficiency.

[0028] Further, see Figures 1 to 4 As shown, the first insulating support 21 extends along the length of the cell assembly 10. Specifically, the first insulating support 21 extends along the length of the cell assembly 10 (i.e., ... Figures 1 to 4Extending along the length direction shown in the figure, the first insulating support 21 can fully utilize the end space of the cell assembly 10, making the structure of the battery module 100 more compact and reasonable. Whether the cell assembly 10 is composed of a single cell 111 or multiple cells, this extension method allows the first insulating support 21 to be adapted to the cell assembly 10, thereby improving the versatility of the battery module 100 for different cell specifications. Simultaneously, the first insulating support 21 extending along the length direction of the cell assembly 10 provides a larger support area for the first busbar 22, the first lead-out terminal 23, and the first conductive connector 24, ensuring the stability of these components during operation and preventing loosening of connections between these components due to shaking or displacement. Compared to the existing first insulating support 21 extending along the thickness direction of the cell assembly 10 (i.e., the length direction shown in the figure), this extension method allows for full utilization of the end space of the cell assembly 10, making the structure of the battery module 100 more compact and reasonable. Figures 1 to 4 In terms of the structure extending in the thickness direction shown, when the first conductive connector 24 is a screw or similar structure, the arrangement of the first insulating bracket 21 extending along the length direction of the cell assembly 10 facilitates the application of torque to the screw. Because the existing arrangement of the first insulating bracket 21 extending along the thickness direction of the cell assembly 10 is prone to narrow space, and in such a situation, it is difficult for the operator to apply torque to loosen or tighten the screw. Therefore, the arrangement of the first insulating bracket 21 extending along the length direction of the cell assembly 10 facilitates the operator to apply torque to the screw.

[0029] Optionally, along the thickness direction of the cell assembly 10, the first side 2101 and the second side 2102 are respectively located on opposite sides of the first insulating bracket 21, and one of the first side 2101 and the second side 2102 is provided with a mounting surface 211, and the other of the two is provided with a mounting groove 212.

[0030] Specifically, the mounting surface 211 and the mounting groove 212 are respectively located on opposite sides of the first insulating bracket 21, providing precise mounting positions for the first busbar 22 and the first lead-out terminal 23. This facilitates quick and accurate installation of the first busbar 22 and the first lead-out terminal 23 by operators, improving assembly efficiency. Furthermore, the layout of the mounting surface 211 and the mounting groove 212 on opposite sides of the first insulating bracket 21 makes full use of the space on both sides of the first insulating bracket 21. This allows for a more compact overall structure of the battery module 100 and a more rational layout of its various components, saving space to some extent. In addition, in this application, the mounting surface 211 can be located on the first side 2101 and the mounting groove 212 on the second side 2102, or vice versa. This can be reasonably adjusted according to actual conditions and needs, and this application does not impose specific limitations.

[0031] It is understood that in this application, the first insulating bracket 21 can be bent to form a mounting groove 212 on one side (i.e., the first side 2101 or the second side 2102), while the other side (i.e., the second side 2102 or the first side 2101) of the first insulating bracket 21 can naturally form a mounting surface 211. This not only ensures the structural strength of the first insulating bracket 21, but also ensures that the overall thickness of the first insulating bracket 21, the first busbar 22 and the first lead terminal 23 after assembly is not too thick (i.e., not exceeding the thickness of the cell assembly 10), thereby facilitating the assembly of the battery module 100.

[0032] Further, see Figures 1 to 4 As shown, the first side 2101 is provided with a mounting surface 211, and the second side 2102 is provided with a mounting groove 212, along the width direction of the cell assembly 10 (i.e., Figures 1 to 4 (shown in the width direction) One end of the mounting groove 212 is provided with a clearance opening 2121. The first lead-out terminal 23 is located in the mounting groove 212 and extends at least partially from the clearance opening 2121 to the outside of the first insulating bracket 21. The end of the first busbar 22 near the clearance opening 2121 is provided with a bent portion 221. The bent portion 221 bends toward the first lead-out terminal 23 and abuts against the first lead-out terminal 23.

[0033] Specifically, one end of the mounting slot 212 is provided with a clearance opening 2121, and the first lead-out terminal 23 extends at least partially from the clearance opening 2121. This not only facilitates the contact between the first lead-out terminal 23 and the first busbar 22, but also facilitates the connection between the first lead-out terminal 23 and the external circuit. This simplifies the connection operations between the first lead-out terminal 23 and the first busbar 22, and between the first lead-out terminal 23 and the external circuit, thereby improving the convenience of connecting the battery module 100 to external devices (not shown in the figure). The end of the first busbar 22 near the clearance opening 2121 is provided with a bent portion 221, and the bent portion 221 bends towards the first lead-out terminal 23 and contacts the portion of the first lead-out terminal 23 extending from the clearance opening 2121. This cleverly enables the first busbar 22 and the first lead-out terminal 23 to be electrically connected, ensuring the stability of the electrical connection between the first busbar 22 and the first lead-out terminal 23, reducing resistance, and ensuring the power transmission efficiency of the battery module 100. The bent portion 221 abuts against the first lead-out terminal 23, which not only realizes the electrical connection between the first busbar 22 and the first lead-out terminal 23, but also enhances the stability of the mechanical connection, preventing the connection between the first busbar 22 and the first lead-out terminal 23 from loosening due to vibration or other factors during the operation of the battery module 100, thereby improving the reliability of the connection. The first lead-out terminal 23 is located in the mounting groove 212, which is composed of a first insulating bracket 21. This bracket not only supports the first lead-out terminal 23, but also provides insulation and isolation for the first lead-out terminal 23, preventing short circuits between the first lead-out terminal 23 and other components, and ensuring the electrical safety of the battery module 100.

[0034] Further, see Figures 1 to 4 As shown, the first lead-out terminal 23 further includes a lead-out stud 231, and the first busbar 22 further includes a clearance notch 222; the lead-out stud 231 is disposed on the first lead-out terminal 23 at one end near the clearance notch 222, and the clearance notch 222 is disposed on the bend 221 to at least clear the lead-out stud 231.

[0035] Specifically, the lead-out stud 231 is located at the end of the first lead-out terminal 23 near the clearance notch 222, providing a precise positioning point for the connection between the first busbar 22 and the first lead-out terminal 23. This ensures accurate connection, facilitates stable electrical connection, and improves the stability of the electrical performance of the battery module 100. The lead-out stud 231, in conjunction with the clearance notch 222, can prevent relative movement between the first lead-out terminal 23 and the first busbar 22 to a certain extent, ensuring the connection stability between them. Simultaneously, the lead-out stud 231 facilitates connection between the first lead-out terminal 23 and external circuits, allowing the battery module 100 to connect to external circuits and thus input or output electrical energy. In some embodiments, the lead-out stud 231 is provided with an external thread (not shown in the figure), which can engage with the internal thread on a matching nut (not shown in the figure). This can improve the reliability of the connection between the first lead-out terminal 23 and the external circuit. Furthermore, through the fixing action of the nut, the bent portion 221 can be pressed against the first lead-out terminal 23, so that the bent portion 221 can better abut against the first lead-out terminal 23, ensuring the reliability of the abutment connection between the first busbar 22 and the first lead-out terminal 23.

[0036] Further, see Figures 1 to 4 As shown, the battery cell assembly 10 also includes a tray 112, and a fixing part 213 is provided on the first insulating support 21; the tray 112 has a mounting cavity 1121, the battery cell 111 is located in the mounting cavity 1121, and the first insulating support 21 is at least partially located in the mounting cavity 1121 and connected to the tray 112 through the fixing part 213.

[0037] Specifically, the mounting cavity 1121 of the tray 112 provides space for the battery cell 111, allowing it to be properly placed and secured within the tray 112. This prevents the battery cell 111 from shaking during use, ensuring the structural stability of the battery module 100 and improving safety. Furthermore, in actual manufacturing, the tray 112 is generally made of a high-strength metal plate, providing good protection for the battery cell 111 and preventing damage from external impacts. Simultaneously, metal plates typically have good heat dissipation properties; the tray 112, made of metal plate, effectively dissipates the heat generated by the battery cell 111 during operation into the air, ensuring the battery module 100 can operate continuously and stably. The first insulating bracket 21 is located in the mounting cavity 1121 and connected to the tray 112 via the fixing part 213, tightly combining the battery cell 111, the tray 112, and the first insulating bracket 21. This enhances the overall structural strength of the battery cell assembly 10, enabling it to withstand certain external impacts. During actual assembly, the first insulating bracket 21, positioned between the tab 1111 of the battery cell 111 and the tray 112, provides excellent insulation, preventing potential electrical short circuits between the battery cell 111 and the tray 112, thus ensuring the electrical safety of the battery module 100. Furthermore, the tray 112 and the first insulating bracket 21 work together to protect the battery cell 111, reducing damage from external factors and extending its lifespan, thereby improving the overall performance of the battery module 100.

[0038] Further, see Figures 1 to 4 As shown, the fixing part 213 includes a first support protrusion 2131 and a second support protrusion 2133. The first support protrusion 2131 and the second support protrusion 2133 are spaced apart along the width direction of the cell assembly 10. The first support protrusion 2131 is provided with a first connection hole 2132, and the second support protrusion 2133 is provided with a second connection hole 2134. The first insulating bracket 21 is detachably connected to the tray 112 through the first connection hole 2132 and the second connection hole 2134.

[0039] Specifically, the first support protrusion 2131 and the second support protrusion 2133 are spaced apart along the width direction of the cell assembly 10, providing multi-point support for the first insulating bracket 21 and the tray 112. This makes the connection between the first insulating bracket 21 and the tray 112 more evenly stressed, thus effectively dispersing external forces and enhancing the structural stability of the entire cell assembly 10. This ensures that the connection between the components of the battery module 100 remains reliable and is not easily loosened during operation. The connection is achieved through the first connecting hole 2132 and the second connecting hole 2134. In actual assembly, studs 40 can be passed through the first connecting hole 2132 and the second connecting hole 2134 respectively, thereby detachably connecting the first insulating bracket 21 to the tray 112. Compared with the single-point connection method, this double-hole connection method can further strengthen the connection between the first insulating bracket 21 and the tray 112, improve the overall structural stability and reliability of the cell assembly 10, and better withstand vibrations and impacts during transportation and use. Meanwhile, the spaced-apart first support protrusion 2131 and second support protrusion 2133, along with their first connecting holes 2132 and second connecting holes 2134, provide clear positioning markers for installation. Operators can quickly and accurately align and connect the first insulating bracket 21 to the tray 112, effectively reducing installation difficulty and improving installation efficiency. Furthermore, the detachable connection method facilitates the removal of the first insulating bracket 21 from the tray 112 during maintenance or repair, enabling inspection, repair, or replacement of the battery cell 111, tray 112, and the first insulating bracket 21 itself. This reduces maintenance costs and difficulty to some extent, improving the maintainability of the battery module 100.

[0040] It is understandable that when the battery module 100 is composed of multiple cell components 10, the arrangement of the first connection hole 2132 and the second connection hole 2134 not only allows the operator to use studs 40 to pass through the first connection hole 2132 and the second connection hole 2134 respectively to detachably connect the first insulating bracket 21 to the tray 112, but also allows the operator to use studs 40 to pass through the first connection hole 2132 and the second connection hole 2134 respectively to fix the multiple cell components 10, thereby preventing relative movement between the cell components 10 and improving the structural stability of the battery module 100.

[0041] Further, see Figures 1 to 4 As shown, there is a clearance space 214 between the first support protrusion 2131 and the second support protrusion 2133. The first busbar 22 also includes a connecting portion 223. The tab 1111 and the connecting portion 223 are at least partially located within the clearance space 214, and the tab 1111 is electrically connected to the connecting portion 223 by at least one of welding, screwing, and snap-fitting.

[0042] Specifically, the clearance space 214 between the first support protrusion 2131 and the second support protrusion 2133 provides a dedicated area for the connection portion 223 of the tab 1111 and the first busbar 22, allowing the internal structure of the battery module 100 to be more compact and rational, effectively utilizing the limited space. Simultaneously, by placing the tab 1111 and the connection portion 223 within the clearance space 214, this application avoids spatial interference or electrical interference between the tab 1111 and the connection portion 223 and other components, ensuring the orderly arrangement and electrical isolation of each component within the battery module 100, which helps improve the overall stability and reliability of the battery module 100. The tab 1111 is electrically connected to the connection portion 223 through at least one of welding, screwing, or snap-fitting, ensuring a reliable electrical connection between the cell 111 and the first busbar 22, effectively reducing resistance, ensuring efficient power transmission, and improving the electrical performance of the battery module 100. This application provides multiple connection methods such as welding, screwing, and snap-fitting, allowing for flexible selection of the most suitable connection method based on actual production processes, costs, and the usage environment of the battery module 100, thus improving the design and production flexibility of the battery module 100. Furthermore, the clearance space 214 is composed of a first support protrusion 2131 and a second support protrusion 2133, which, as part of the first insulating bracket 21, provide a certain degree of insulation and isolation for the tab 1111 and the connecting portion 223, preventing short circuits between the tab 1111 and the connecting portion 223 and other components, thereby ensuring the electrical safety of the battery module 100.

[0043] Further, see Figures 1 to 4 As shown, the battery cell assembly 10 includes multiple cells, and the battery module 100 also includes a second lead electrode assembly 30. Along the thickness direction of the battery cell assembly 10, multiple battery cell assemblies 10 are stacked sequentially, and the battery cell assemblies 10 located at opposite ends of the battery module 100 are respectively the first battery cell assembly 11 and the second battery cell assembly 12. Adjacent battery cell assemblies 10 are connected in series. The first lead electrode assembly 20 is disposed on the first battery cell assembly 11 and electrically connected to the first battery cell assembly 11, and the second lead electrode assembly 30 is disposed on the second battery cell assembly 12 and electrically connected to the second battery cell assembly 12.

[0044] Specifically, multiple cell components 10 are stacked sequentially along the thickness direction of the cell components 10, and adjacent cell components 10 are electrically connected in series, so that the output voltage of the battery module 100 is the sum of the voltages of each cell component 10. Operators can flexibly adjust the output voltage of the battery module 100 by increasing or decreasing the number of cell components 10 to meet the diverse voltage requirements of different devices. This design makes the battery module 100 applicable to various electronic devices, such as electric vehicles and energy storage systems, broadening its application areas and effectively enhancing its market competitiveness. Simultaneously, the series connection ensures stable current transmission between the cell components 10. The first lead-out component 20 is electrically connected to the first cell component 11, and the second lead-out component 30 is electrically connected to the second cell component 12, ensuring the overall electrical connection reliability of the battery module 100, effectively reducing resistance, energy loss, and improving the charging and discharging efficiency of the battery module 100. Similar to the structure of the first lead assembly 20, the second lead assembly 30 includes a second insulating support 31, a second busbar 32, a second lead terminal 33, and a second conductive connector 34. The second busbar 32 and the second lead terminal 33 are located on opposite sides of the second insulating support 31 and are electrically connected by the second conductive connector 34. When actually installing the first lead-out assembly 20 and the second lead-out assembly 30, if the first lead-out assembly 20 is connected to the positive terminal of the battery module 100, then the second lead-out assembly 30 is connected to the negative terminal of the battery module 100. In this case, the positive terminal of the first cell assembly 11 serves as the positive terminal of the battery module 100, and the negative terminal of the second cell assembly 12 serves as the negative terminal of the battery module 100. If the first lead-out assembly 20 is connected to the negative terminal of the battery module 100, then the second lead-out assembly 30 is connected to the positive terminal of the battery module 100. In this case, the negative terminal of the first cell assembly 11 serves as the negative terminal of the battery module 100, and the positive terminal of the second cell assembly 12 serves as the positive terminal of the battery module 100.

[0045] It is understood that when the battery module 100 includes multiple cell components 10, adjacent cell components 10 can also be electrically connected in parallel. The series connection method for adjacent cell components 10 mentioned above is for better introduction of the battery module 100 of this application and does not exclude the parallel connection method for adjacent cell components 10.

[0046] On the other hand, see Figures 1 to 4 As shown, this application also provides a battery pack (not shown in the figure), which includes the battery module 100 described above. Therefore, the battery pack includes all the technical effects of the battery module 100 described above. Since the technical effects of the battery module 100 have been described in detail above, they will not be repeated here.

[0047] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects: (1) It can solve the problem that the cell tabs and busbars of the soft-pack battery module need to be welded twice, and can simplify the process and reduce costs.

[0048] (2) The first conductive connector can ensure stable current transmission, enhance the connection between the first busbar and the first lead-out terminal, and facilitate installation and maintenance.

[0049] (3) The first insulating support extends along the length of the cell assembly, making the battery module compact, versatile and easy to operate.

[0050] (4) The mounting surface and mounting slot can provide precise mounting positions for the first busbar and the first lead-out terminal, respectively, optimize the layout between components, save space, and facilitate assembly.

[0051] (5) The clearance opening allows the bent part to be easily connected to the first lead-out terminal, ensuring the stability of the electrical connection and enhancing mechanical stability and safety.

[0052] (6) The lead-out stud can accurately position the connection between the first bus and the first lead-out terminal, making the electrical connection between the first bus and the first lead-out terminal stable, facilitating connection with external circuits and enhancing reliability.

[0053] (7) The tray can fix the battery cell, enhance the structural strength of the battery cell assembly and improve the heat dissipation effect of the battery cell, and effectively extend the life of the battery cell and battery module.

[0054] (8) The double-hole multi-point support connection between the first insulating bracket and the tray can effectively enhance the stability of the connection and facilitate the installation and maintenance of the first insulating bracket and the tray, thereby improving the stability of the battery module.

[0055] (9) The clearance space can optimize the layout of the connection part and the electrode, avoid electrical interference, and provide multiple connection methods for the connection part and the electrode, which can effectively improve the flexibility of the design.

[0056] (10) Multiple battery cell components are stacked and connected in series, which allows operators to flexibly adjust the output voltage of the battery module as needed, meet diverse requirements, and enhance the market competitiveness of the battery module.

[0057] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0058] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0059] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery module, characterized in that, include: A battery cell assembly (10), the battery cell assembly (10) comprising a battery cell (111); The first lead-out electrode assembly (20) includes a first insulating support (21), a first busbar (22), and a first lead-out terminal (23). The first insulating support (21) is disposed at the end of the cell assembly (10). The first busbar (22) is disposed on the first side (2101) of the first insulating support (21). The first lead-out terminal (23) is disposed on the second side (2102) of the first insulating support (21) opposite to the first side (2101). One end of the first busbar (22) is electrically connected to the tab (1111) of the cell (111), and the other end of the first busbar (22) abuts against the first lead-out terminal (23).

2. The battery module according to claim 1, characterized in that, The first lead-out electrode assembly (20) further includes a first conductive connector (24), and the first conductive connector (24) connects the first busbar (22) and the first lead-out terminal (23) to the first insulating support (21) and electrically connects the first busbar (22) and the first lead-out terminal (23).

3. The battery module according to claim 1, characterized in that, The first insulating support (21) extends along the length of the cell assembly (10); and / or, Along the thickness direction of the battery cell assembly (10), the first side (2101) and the second side (2102) are located on opposite sides of the first insulating bracket (21), and one of the first side (2101) and the second side (2102) is provided with a mounting surface (211), and the other side is provided with a mounting groove (212).

4. The battery module according to claim 3, characterized in that, The first side (2101) is provided with the mounting surface (211), and the second side (2102) is provided with the mounting groove (212). Along the width direction of the battery cell assembly (10), one end of the mounting groove (212) is provided with a clearance opening (2121). The first lead-out terminal (23) is located in the mounting groove (212) and extends at least partially from the clearance opening (2121) to the outside of the first insulating bracket (21). The first busbar (22) is provided with a bent portion (221) at one end near the clearance opening (2121). The bent portion (221) bends toward the first lead-out terminal (23) and abuts against the first lead-out terminal (23).

5. The battery module according to claim 4, characterized in that, The first lead-out terminal (23) also includes a lead-out stud (231), and the first busbar (22) also includes a clearance notch (222). The lead-out stud (231) is disposed on the first lead-out terminal (23) at one end near the avoidance notch (222), and the avoidance notch (222) is disposed on the bend (221) to at least avoid the lead-out stud (231).

6. The battery module according to claim 1, characterized in that, The battery cell assembly (10) also includes a tray (112), and a fixing part (213) is also provided on the first insulating bracket (21). The tray (112) has a mounting cavity (1121), the battery cell (111) is located in the mounting cavity (1121), and the first insulating bracket (21) is at least partially located in the mounting cavity (1121) and connected to the tray (112) via the fixing part (213).

7. The battery module according to claim 6, characterized in that, The fixing part (213) includes a first support protrusion (2131) and a second support protrusion (2133). The first support protrusion (2131) and the second support protrusion (2133) are spaced apart along the width direction of the cell assembly (10). The first support protrusion (2131) is provided with a first connecting hole (2132), and the second support protrusion (2133) is provided with a second connecting hole (2134). The first insulating bracket (21) is detachably connected to the tray (112) through the first connecting hole (2132) and the second connecting hole (2134).

8. The battery module according to claim 7, characterized in that, There is a clearance space (214) between the first support protrusion (2131) and the second support protrusion (2133). The first busbar (22) also includes a connecting part (223). The tab (1111) and the connecting part (223) are at least partially located within the clearance space (214). The tab (1111) is electrically connected to the connecting part (223) by at least one of welding, screwing, and snap-fitting.

9. The battery module according to any one of claims 1 to 8, characterized in that, The cell assembly (10) includes multiple cells, and the battery module (100) also includes a second lead electrode assembly (30). Along the thickness direction of the cell assembly (10), multiple cell assemblies (10) are stacked sequentially, and the cell assemblies (10) located at opposite ends of the battery module (100) are respectively the first cell assembly (11) and the second cell assembly (12). Two adjacent cell assemblies (10) are connected in series. The first lead electrode assembly (20) is disposed on the first cell assembly (11) and electrically connected to the first cell assembly (11). The second lead electrode assembly (30) is disposed on the second cell assembly (12) and electrically connected to the second cell assembly (12).

10. A battery pack, characterized in that, The battery pack includes the battery module (100) according to any one of claims 1 to 9.

Images