Battery module, battery pack and electric device

Abstract

The application provides a battery module, a battery pack and a power utilization equipment, and relates to the technical field of batteries. The battery module comprises a connecting support and a plurality of battery cells; the battery cells have first tabs and second tabs; the first tabs of the plurality of battery cells are arranged in sequence at intervals, and the second tabs of the plurality of battery cells are arranged in sequence at intervals; the connecting support comprises a first support frame and a second support frame, the first support frame and the second support frame are movably connected, the first support frame fixes the plurality of first tabs, and the second support frame fixes the plurality of second tabs. The battery module, the battery pack and the power utilization equipment provided by the application can improve the convenience of threading the tabs during the assembly of the battery module, avoid the contact between the tabs during the operation, and thus avoid the short circuit problem.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery module, battery pack and electrical equipment. Background Technology

[0002] A battery module typically consists of multiple cells arranged in sequence. Each cell has tabs, and the cells can be connected in series or parallel to meet the specific voltage and capacity requirements of the battery module.

[0003] In related technologies, the end of the battery cell with tabs is often fixed by a connecting plate. The connecting plate has multiple mounting holes, and the tabs need to be inserted into the mounting holes to facilitate electrical connection and mechanical fixation between the battery cells.

[0004] However, battery modules have a large number of tabs, which are easily deformed. During assembly, it is inconvenient to insert the tabs, and the tabs are prone to contact during operation, which can cause safety problems such as short circuits. Utility Model Content

[0005] This application provides a battery module, battery pack, and electrical equipment to solve the problem that it is inconvenient to insert the tabs during the battery module assembly process, and that the tabs are prone to contact during operation, which can cause short circuits.

[0006] In a first aspect, this application provides a battery module, including:

[0007] Multiple battery cells, each battery cell having a first tab and a second tab; the first tabs of the multiple battery cells are arranged in a sequentially spaced manner, and the second tabs of the multiple battery cells are arranged in a sequentially spaced manner.

[0008] The connecting bracket includes a first support frame and a second support frame, which are movably connected. The first support frame fixes a plurality of first electrode tabs, and the second support frame fixes a plurality of second electrode tabs.

[0009] As an optional implementation, the connecting bracket is provided with a rotating component, and the first support frame and the second support frame are rotatably connected through the rotating component.

[0010] As an optional implementation, the rotating member is located on the surfaces of the first support frame and the second support frame away from the battery cell.

[0011] As an optional implementation, the surface of the first support frame facing the battery cell is flush with the surface of the second support frame facing the battery cell.

[0012] As an optional implementation, the connecting bracket is provided with a connecting part, and the first support frame, the second support frame and the connecting part are integrally formed.

[0013] As an optional implementation, the connecting part is provided with a groove, the first inner wall of the groove is connected to the first support frame, and the second inner wall of the groove is connected to the second support frame;

[0014] When the first support frame and the second support frame rotate through the connecting part, the first inner wall and the second inner wall of the groove move closer to each other or move further away from each other.

[0015] As an alternative implementation, the groove is positioned away from the battery cell, and the groove can be reused to accommodate a wire.

[0016] As an optional implementation, the first support frame is provided with a plurality of first mounting ports, the first mounting ports being provided corresponding to the first electrode tabs, and the first electrode tabs being inserted into the first mounting ports;

[0017] The second support frame is provided with multiple second mounting ports, and the second mounting ports are provided corresponding to the second electrode tabs, with the second electrode tabs passing through the second mounting ports.

[0018] As an optional implementation, the first support frame is provided with a plurality of first abutting parts arranged at intervals in sequence, the first abutting parts protruding toward the battery cell and abutting against the plurality of battery cells;

[0019] The second support frame is provided with a plurality of second abutment portions arranged at intervals in sequence. The second abutment portions protrude toward the battery cells and abut against the plurality of battery cells.

[0020] As an optional implementation, the width of the first abutting portion toward the end of the battery cell is smaller than the width of the first abutting portion away from the end of the battery cell;

[0021] And / or, the width of the second abutment portion toward the end of the battery cell is less than the width of the first abutment portion away from the end of the battery cell.

[0022] As an optional implementation, a first gap is formed between two adjacent first abutting portions, and the first gap accommodates the first electrode tab;

[0023] A second gap is formed between two adjacent second abutment portions, and the second gap accommodates the second electrode tab.

[0024] As an optional implementation, the surface of the connecting bracket away from the battery cell is provided with a mounting groove;

[0025] The battery module includes a connecting piece, which is disposed within the mounting slot.

[0026] As an optional implementation, a limiting element is provided on the surface of the connecting bracket away from the battery cell;

[0027] At least a portion of the connecting piece extends out of the mounting groove, and the portion of the connecting piece extending out of the mounting groove abuts against the limiting member.

[0028] As an optional implementation, the connecting bracket is provided with a connecting hole;

[0029] The connecting piece includes an end connecting piece, and the end connecting piece is provided with a mounting hole;

[0030] The battery module includes a connector. When the end connecting piece is disposed in the mounting groove, the mounting hole and the connecting hole are connected accordingly. The connector is inserted into the connecting hole through the mounting hole.

[0031] Secondly, this application provides a battery pack, including any of the above-mentioned battery modules.

[0032] Thirdly, this application provides an electrical device including any of the above-mentioned battery modules or battery packs.

[0033] The battery module, battery pack, and electrical equipment provided in this application include a battery module comprising a connecting bracket and multiple battery cells. Each battery cell has a first tab and a second tab. The first tabs of the multiple battery cells are arranged at intervals, and the second tabs of the multiple battery cells are arranged at intervals. The connecting bracket includes a first support frame and a second support frame, which are movably connected. The first support frame fixes multiple first tabs, and the second support frame fixes multiple second tabs. By setting the connecting bracket as a movably connected first and second support frame, the assembly of the tabs and the connecting bracket can be performed in two steps, processing a smaller number of tabs each time, which facilitates alignment and fixation. This reduces the risk of tab deformation and contact between battery cells, effectively avoiding short circuits and improving operational safety. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0035] Figure 1 This is a schematic diagram of the battery module provided in an embodiment of this application;

[0036] Figure 2 for Figure 1 A structural schematic diagram of the battery module from another perspective;

[0037] Figure 3 for Figure 1 Exploded view of the battery module;

[0038] Figure 4 for Figure 1 Schematic diagram of the connection structure between the middle connecting bracket and the battery cell;

[0039] Figure 5 for Figure 1 Schematic diagram of the middle connecting bracket;

[0040] Figure 6 for Figure 5 A structural schematic diagram of the connecting bracket from another perspective;

[0041] Figure 7 for Figure 1 Another structural diagram of the connecting bracket;

[0042] Figure 8 for Figure 7 Enlarged view of section A;

[0043] Figure 9 for Figure 7 A schematic diagram of the middle connecting bracket from another perspective.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100-cell;

[0046] 110 - First pole ear;

[0047] 120 - Second pole ear;

[0048] 200 - Connecting bracket; 201 - Mounting slot; 202 - Limiting component; 203 - Connecting hole;

[0049] 210 - First support frame; 211 - First mounting port; 212 - First abutment part; 213 - First gap; 214 - First mounting base;

[0050] 220 - Second support frame; 221 - Second mounting port; 222 - Second abutment part; 223 - Second gap; 224 - Second mounting base;

[0051] 230 - Rotating component;

[0052] 240 - Connecting part; 241 - Groove; 2411 - First inner wall; 2412 - Second inner wall;

[0053] 300-Connecting piece;

[0054] 310 - End connecting piece; 311 - Mounting hole;

[0055] 400-Fixing Strap;

[0056] 500-Fixed Plate;

[0057] 600-heat shrink film;

[0058] 700-buffered foam.

[0059] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0061] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing the embodiments of this application and their implementations, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in the embodiments of this application can be understood according to the specific circumstances.

[0062] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0063] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0064] In this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0065] As described in the background section, in related technologies, the end of the battery cell with tabs is often fixed by a connecting plate. The connecting plate has multiple mounting holes, and the tabs need to be inserted into the mounting holes to facilitate electrical connection and mechanical fixation between the battery cells.

[0066] However, in actual assembly, the large number of tabs in the battery module, each requiring precise insertion into the mounting opening of the connecting plate, leads to significant assembly difficulty and workload. Furthermore, the tabs themselves are relatively soft and easily deformed under external force. During assembly, operators must carefully thread the tabs through the mounting opening, but the sheer number and susceptibility of the tabs make the process extremely inconvenient.

[0067] Furthermore, during operation, the tabs are prone to coming into contact with each other due to shaking or squeezing. Once the tabs come into contact, it may cause safety issues such as short circuits, which will not only damage the battery module but also endanger the personal safety of the operators.

[0068] In view of this, embodiments of this application provide a battery module, a battery pack, and an electrical device. The battery module includes a connecting bracket and multiple battery cells. Each battery cell has a first tab and a second tab. The first tabs of the multiple battery cells are arranged at intervals, and the second tabs of the multiple battery cells are arranged at intervals. The connecting bracket includes a first support frame and a second support frame, which are movably connected. The first support frame fixes multiple first tabs, and the second support frame fixes multiple second tabs. By setting the connecting bracket as a movably connected first and second support frame, the assembly of the tabs with the connecting bracket can be performed in two steps. Each step involves processing a smaller number of tabs, facilitating alignment and fixation. This reduces the risk of tab deformation and contact between battery cells, effectively avoiding short circuits and improving operational safety.

[0069] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0070] Combination Figures 1 to 3 As shown, the first aspect of this application provides a battery module including a plurality of battery cells 100.

[0071] In a battery module, multiple cells 100 are typically arranged in a compact array to achieve miniaturization and weight reduction of electrical equipment, thereby improving the portability and integration of the equipment.

[0072] For example, the battery module may have a top and bottom that are relatively arranged, a left and right side that are relatively arranged, and a front and rear side that are relatively arranged.

[0073] It should be noted that the battery module faces... Figure 1 The top is on the Z-axis side, with the battery module facing away from it. Figure 1 The bottom is on the Z-axis side; the battery module faces... Figure 1 The left side is on the X-axis, and the battery module faces away from it. Figure 1 The side facing the X direction is the right side; the battery module faces... Figure 1 The side facing the Y direction is the front side, and the battery module faces away from it. Figure 1 The side in the middle Y direction is the rear side.

[0074] The arrangement direction of multiple battery cells 100 can be the same as Figure 1 The X-axis is parallel, and the tabs of multiple cells 100 are all located in the direction of the cell 100. Figure 1 The direction of the X-axis is such that the tabs are located at the top of the battery module and extend upwards.

[0075] In some embodiments, the battery cell 100 has a first tab 110 and a second tab 120; the first tabs 110 of a plurality of battery cells 100 are arranged in sequence at intervals, and the second tabs 120 of a plurality of battery cells 100 are arranged in sequence at intervals.

[0076] Among them, one of the first electrode 110 and the second electrode 120 is a positive electrode, and the other is a negative electrode.

[0077] After multiple battery cells 100 are arranged, the side with the tabs all face the same direction, so that each tab of the battery cell 100 extends in the same direction, so as to realize the electrical connection between the battery cells 100.

[0078] It should be noted that, in the embodiments of this application, the first tab 110 and the second tab 120 of the battery cell 100 are along Figure 1 The Y-axis arrangement in the middle, wherein the first electrode 110 is closer to the second electrode 120.Figure 1 The Y-axis setting in the middle.

[0079] Taking the soft-pack battery cell 100 as an example, the outer shell of the battery cell 100 is made of aluminum-plastic film. Compared with the hard-shell battery cell 100, its mechanical strength is lower, and it needs to be effectively fixed when assembled in groups.

[0080] After the battery cells 100 are arranged to form a battery cell assembly, fixing straps 400 can be wrapped around the sides of the battery cell assembly to initially secure it. Multiple fixing straps 400 can be provided, and these straps 400 can extend along the height direction of the battery cells 100. Figure 1 The Z-axis spacing is used to enhance the fixing effect.

[0081] For example, the fixing strap 400 can be fiberglass tape, which is attached to the surface of the battery cell 100.

[0082] The battery module may also include a fixing plate 500. The fixing plate 500 may be distributed on both sides of the cell 100 arrangement direction and be attached and fixed to each cell 100.

[0083] By setting the fixing plate 500, the position of each cell 100 in the cell group can be further stabilized, so as to prevent the cell 100 from having a relatively small position between them during the movement, handling and use, which would cause the shape of the entire cell group to be skewed and become more diamond-shaped.

[0084] Furthermore, a heat-shrink film 600 can be fitted onto the outer surface of the battery cell assembly. The heat-shrink film 600 covers the side of the battery cell assembly and can be positioned on the outside of the fixing plate 500. The shrinkage of the heat-shrink film 600 further secures the battery cell assembly and the fixing plate 500, thereby further improving the arrangement stability of the battery cell assembly.

[0085] Furthermore, cushioning foam 700 can be installed on the outer surface of the battery cell assembly. The cushioning foam 700 is distributed on the sides and bottom of the battery cell assembly and is adhered and fixed to it. Since the casing of the pouch battery is made of aluminum-plastic film, which has relatively low strength, attaching the cushioning foam 700 to the outside can effectively protect the battery cell 100 from damage by external foreign objects.

[0086] Understandably, the fixing strap 400, fixing plate 500, heat shrink film 600, and cushioning foam 700 constitute the insulation and protection fixing assembly of the battery module. This assembly effectively fixes and protects multiple battery cells 100, improving the stability of the battery module.

[0087] The outermost part of the battery module can also be provided with a shell (not shown in the figure), which can provide effective protection for the internal structure.

[0088] It should be noted that the insulating protective fixing components and housing can be flexibly selected according to the design style of the battery module and the actual use scenario.

[0089] In some embodiments, the battery module may further include a connecting piece 300, which serves as a key component for connecting the positive and negative electrodes of the battery cell 100 and enables the battery cells 100 to be connected in series or in parallel, thereby meeting the specific voltage and capacity requirements of the battery module.

[0090] It should be noted that the connecting piece 300 is typically made of a material with good electrical conductivity, such as copper, nickel, or nickel-plated steel strip. These materials have good conductivity, fatigue resistance, and oxidation and corrosion resistance, ensuring stable current transmission.

[0091] Specifically, during the connection process between the connecting piece 300 and the tab, a welding process can be used to ensure the reliability and stability of the connection.

[0092] Combination Figure 4 As shown, in some embodiments, the battery module further includes a connecting bracket 200, which is disposed on top of the battery cell assembly to support and fix the tabs.

[0093] The connecting bracket 200 includes a first support frame 210 and a second support frame 220. The first support frame 210 fixes a plurality of first tabs 110, and the second support frame 220 fixes a plurality of second tabs 120.

[0094] By setting a first support frame 210 specifically for fixing the first electrode tab 110 and a second support frame 220 specifically for fixing the second electrode, the two parts are used to fix different electrode tabs respectively, which facilitates better management of the arrangement and connection of the electrode tabs.

[0095] Specifically, the first support frame 210 and the second support frame 220 are movably connected, so that the first support frame 210 and the second support frame 220 can be adjusted within a certain range to avoid interfering with the second electrode 120 when fixing the first electrode 110, or interfering with the first electrode 110 when fixing the second electrode 120. This allows for flexible adaptation to the arrangement of the battery cells 100 and improves the flexibility of assembly.

[0096] When assembling the connecting bracket 200 and the electrode tab of the battery cell 100, the second support bracket 220 can be moved to a position away from the second electrode tab 120 to avoid interfering with the second electrode tab 120, so that the first electrode tab 110 can be fixed with the first support bracket 210 first; after the first support bracket 210 fixes the first electrode tab 110, the second support bracket 220 can be moved closer to the battery cell 100 so that the second electrode tab 120 can be fixed with the second support bracket 220.

[0097] Therefore, by setting the connecting bracket 200 as the first support bracket 210 and the second support bracket 220 for movable connection, the assembly of the electrode tab and the connecting bracket 200 can be carried out in two stages. The number of electrode tabs processed each time is small, which is convenient for alignment and fixing. This reduces the deformation of the electrode tab and the risk of mutual contact between the cells 100, effectively avoids short circuit problems, and improves operational safety.

[0098] Combination Figure 5 As shown, in some embodiments, the connecting bracket 200 is provided with a rotating member 230, and the first support frame 210 and the second support frame 220 are rotatably connected through the rotating member 230.

[0099] By setting the rotating component 230, the angles of the first support frame 210 and the second support frame 220 can be adjusted as needed during the assembly process to better align the tabs of the battery cell 100.

[0100] Combination Figure 4 and Figure 5 As shown, in specific implementation, the first support frame 210 and the first electrode tab 110 can be installed first.

[0101] Before installation, the second support frame 220 is rotated at a certain angle relative to the first support frame 210 away from the battery cell 100 so that the second support frame 220 will not come into contact with the second battery cell 100 during the installation of the first support frame 210.

[0102] Then, the first support frame 210 is aligned with the first tabs 110 of the plurality of battery cells 100, so that the first support frame 210 fixes the first battery cell 100.

[0103] Finally, the second support frame 220 is rotated relative to the first support frame 210 closer to the battery cell 100. Since the position of the first support frame 210 is determined, the second support frame 220 can automatically align with the second tabs 120 of the multiple battery cells 100 after rotation, which can conveniently fix the second support frame 220 to the second battery cell 100.

[0104] By installing the first tab 110 and the second tab 120 onto the connecting bracket 200 in two separate steps, it helps to avoid the risk of the tabs being misaligned and coming into contact with each other during a single insertion, forming a circuit and causing a short circuit, thus creating a safety hazard.

[0105] In some embodiments, the rotating member 230 is located on the surfaces of the first support frame 210 and the second support frame 220 away from the battery cell 100. The rotating member 230 is not close to the battery cell 100, which reduces the direct impact of the rotating member 230 on the battery cell 100 or the tab, and reduces physical interference and potential damage to the battery cell 100 or the tab.

[0106] For example, the rotating component 230 can be a rotating shaft. A first mounting base 214 is provided on the surface of the first support frame 210 away from the battery cell 100, and a second mounting base 224 is provided on the surface of the second support frame 220 away from the battery cell 100. Both the first mounting base 214 and the second mounting base 224 have through holes, the axial direction of which is parallel to the arrangement direction of the battery cells 100. Figure 1 The X-axis is parallel to the shaft, which is inserted into the through hole.

[0107] Combination Figure 5 and Figure 6 As shown, in some embodiments, the surface of the first support frame 210 facing the battery cell 100 is flush with the surface of the second support frame 220 facing the battery cell 100.

[0108] Understandably, the first support frame 210 and the second support frame 220 are flush with the surface of the battery cell 100, which allows the connecting bracket 200 to be placed stably on the battery cell 100, ensuring that the battery cell 100 is subjected to uniform force, thereby helping to reduce the shaking and displacement between the battery cell 100 and the connecting bracket 200 during assembly and use.

[0109] When the first support frame 210 and the second support frame 220 are located on the same horizontal plane, this is the final state of the connecting bracket 200. After installation, the first support frame 210 and the second support frame 220 can maintain a flat state and abut against the top surface of the battery cell 100, so that the battery cells 100 are neatly arranged.

[0110] Furthermore, when the first support frame 210 is placed horizontally to connect with the first battery cell 100, the second support frame 220 can only swing on the side of the first support frame 210 away from the battery cell 100, and will not move to the side of the first support frame 210 closer to the battery cell 100. Therefore, the rotation and adjustment of the connecting bracket 200 will not directly affect the battery cell 100 and its tabs, allowing operators to assemble more conveniently and improving overall assembly efficiency and safety.

[0111] Combination Figure 5 As shown, in some embodiments, the first support frame 210 is provided with a plurality of first mounting ports 211, the first mounting ports 211 being correspondingly provided with the first electrode tabs 110, and the first electrode tabs 110 passing through the first mounting ports 211; the second support frame 220 is provided with a plurality of second mounting ports 221, the second mounting ports 221 being correspondingly provided with the second electrode tabs 120, and the second electrode tabs 120 passing through the second mounting ports 221.

[0112] The positions of the first mounting opening 211 and the first tab 110 are one-to-one, so each first tab 110 can be inserted into its corresponding first mounting opening 211. This provides effective support and protection for the first tab 110, reducing the risk of deformation and damage to the first tab 110 during assembly and use.

[0113] The second mounting opening 221 corresponds one-to-one with the position of the second tab 120, so each second tab 120 can be inserted into its corresponding second mounting opening 221. This provides effective support and protection for the second tab 120, reducing the risk of deformation and damage to the second tab 120 during assembly and use.

[0114] Combination Figure 2 and Figure 6 As shown, in some embodiments, the first support frame 210 is provided with a plurality of first abutting portions 212 arranged at intervals in sequence, the first abutting portions 212 protruding toward the battery cell 100 and abutting with the plurality of battery cells 100; the second support frame 220 is provided with a plurality of second abutting portions 222 arranged at intervals in sequence, the second abutting portions 222 protruding toward the battery cell 100 and abutting with the plurality of battery cells 100.

[0115] The protruding first abutment portion 212 provides support and positioning between the first support frame 210 and the battery cell 100, ensuring the stable placement of the first support frame 210 on the battery cell 100 and reducing possible shaking and displacement during assembly and use. Similarly, the protruding second abutment portion 222 provides support and positioning between the second support frame 220 and the battery cell 100, ensuring the stable placement of the second support frame 220 on the battery cell 100 and reducing possible shaking and displacement during assembly and use.

[0116] The first contact portion 212 directly contacts the battery cell 100, providing support and fixation, reducing the movement or damage to the first support frame 210 caused by external forces. The second contact portion 222 directly contacts the battery cell 100, providing support and fixation, reducing the movement or damage to the second support frame 220 caused by external forces.

[0117] During specific installation, the first abutment 212 can be inserted into the gap between two adjacent first electrodes 110 to separate the adjacent first electrodes 110 and prevent the first electrodes 110 from tilting and contacting each other; the second abutment 222 can be inserted into the gap between two adjacent second electrodes 120 to separate the adjacent second electrodes 120 and prevent the second electrodes 120 from tilting and contacting each other.

[0118] By providing a first abutting part 212 on the first support frame 210 and a second abutting part 222 on the second support frame 220, it can abut against the battery cell 100, thereby providing a stable and reliable support for the connecting bracket 200. This integrated design saves the use of other components (such as rubber and foam) used to elevate the connecting bracket 200.

[0119] In some embodiments, the width of the first abutment portion 212 toward the end of the battery cell 100 is smaller than the width of the first abutment portion 212 away from the end of the battery cell 100; the width of the second abutment portion 222 toward the end of the battery cell 100 is smaller than the width of the first abutment portion 212 away from the end of the battery cell 100.

[0120] Understandably, the first contact portion 212 and the second contact portion 222 have a conical or trapezoidal structure, wherein the end closer to the battery cell 100 is narrower, while the end farther away from the battery cell 100 is wider.

[0121] The design of this conical or trapezoidal structure allows the connecting bracket 200 to naturally guide the tab to the correct position during placement, reducing the difficulty and time of alignment during the assembly process.

[0122] In some embodiments, a first gap 213 is formed between two adjacent first abutting portions 212, and the first gap 213 accommodates the first electrode tab 110; a second gap 223 is formed between two adjacent second abutting portions 222, and the second gap 223 accommodates the second electrode tab 120.

[0123] Specifically, on the first support frame 210, the first gap 213 between two adjacent first abutting parts 212 communicates with the first mounting port 211; on the second support frame 220, the second gap 223 between two adjacent second abutting parts 222 communicates with the second mounting port 221.

[0124] In practice, the first tab 110 can be inserted into the first mounting port 211 through the first gap 213, and the second tab 120 can be inserted into the second mounting port 221 through the second gap 223. The first tab 110 and the second tab 120 extend a certain length outward from the connecting bracket 200 so as to be connected to the connecting piece 300 after bending.

[0125] By setting a gap between the contact parts, the electrode tabs can be smoothly inserted into the installation port through the gap, and the side wall of the contact part can form the inner wall of the gap. The side wall of the contact part can isolate the electrode tabs and prevent adjacent electrode tabs from bending or tilting and coming into contact with each other.

[0126] Since the width of the first abutment portion 212 and the second abutment portion 222 at the end facing the battery cell 100 is smaller than the width of the first abutment portion 212 and the second abutment portion 222 at the end away from the battery cell 100, the first gap 213 formed between two adjacent first abutment portions 212 is wider at the end near the first tab 110, which makes it easier for the first tab 110 to enter the first gap 213, reducing alignment difficulty and the risk of deformation of the first tab 110. Similarly, the second gap 223 formed between two adjacent second abutment portions 222 is wider at the end near the second tab 120, which makes it easier for the second tab 120 to enter the second gap 223, reducing alignment difficulty and the risk of deformation of the second tab 120.

[0127] Combination Figure 1 , Figure 3 and Figure 5 As shown, in some embodiments, the surface of the connecting bracket 200 away from the battery cell 100 is provided with a mounting groove 201; the connecting piece 300 is disposed in the mounting groove 201.

[0128] Understandably, the mounting slot 201 provides a dedicated space for accommodating and securing the connecting piece 300, reducing the possible movement and misalignment of the connecting piece 300 during assembly, helping to ensure the secure installation of the connecting piece 300 and the reliability of its electrical connection with the electrode tab, and improving assembly efficiency.

[0129] It should be noted that the number and arrangement of the connecting pieces 300 can be flexibly set according to the series and parallel connection of the cells 100 and the arrangement of the cells 100.

[0130] Specifically, the connecting piece 300 has a clearance opening at the position corresponding to the first mounting port 211 and the second mounting port 221. After the electrode tab passes through the mounting port, it passes through the clearance opening and extends to the outside of the connecting bracket 200.

[0131] In practice, the first tab 110 and the second tab 120 passing through the connecting bracket 200 can be bent in a preset direction so that the first tab 110 and the second tab 120 contact the connecting piece 300 respectively. Then, the first tab 110 and the second tab 120 are welded to the connecting piece 300 to form an electrical connection, thereby realizing the series and parallel connection between the battery cells 100.

[0132] In some embodiments, the battery module may also be provided with a sampling structure, which may be a sampling harness or a flexible circuit board. The sampling structure is connected to the connecting bracket 200 by riveting or welding to obtain information such as the current, voltage and temperature of the module.

[0133] In some embodiments, a limiting member 202 is provided on the surface of the connecting bracket 200 away from the battery cell 100; at least a portion of the connecting piece 300 extends out of the mounting groove 201, and the portion of the connecting piece 300 extending out of the mounting groove 201 abuts against the limiting member 202.

[0134] The limiting member 202 can provide additional support and fixation for the connecting piece 300, preventing the connecting piece 300 from moving or falling off within the mounting groove 201.

[0135] The number of limiting members 202 is multiple, and the multiple limiting members 202 are distributed on at least one pair of sides of the mounting groove 201.

[0136] For example, the limiting member 202 is a snap-fit, at least a portion of which extends above the mounting groove 201. When installing the connecting piece 300, the connecting piece 300 is aligned with the mounting groove 201 and pressed down. The connecting piece 300 will compress the limiting member 202, causing the limiting member 202 to undergo elastic deformation. When the connecting piece 300 is embedded in the mounting groove 201, the limiting member 202 returns to its original shape and abuts against the surface of the connecting piece 300 away from the battery cell 100, thereby fixing the connecting piece 300.

[0137] The thickness of the connecting piece 300 can be slightly greater than the depth of the mounting groove 201. When the connecting piece 300 is embedded in the mounting groove 201, at least a portion of the connecting piece 300 extends out of the mounting groove 201, and the portion of the connecting piece 300 extending out of the mounting groove 201 abuts against the limiting member 202.

[0138] By integrating the connecting piece 300 onto the connecting bracket 200, the assembly process is simplified, and the structural stability and reliability of the battery module are enhanced, making it suitable for the needs of efficient assembly and high-performance use.

[0139] In some embodiments, the connecting bracket 200 is provided with a connecting hole 203; the connecting piece 300 includes an end connecting piece 310, and the end connecting piece 310 is provided with a mounting hole 311; the battery module includes a connector, and when the end connecting piece 310 is disposed in the mounting groove 201, the mounting hole 311 and the connecting hole 203 are correspondingly connected, and the connector is inserted into the connecting hole 203 through the mounting hole 311.

[0140] It should be noted that at both ends of the battery cell 100 arrangement direction, there are end connecting pieces 310 respectively. The end connecting pieces 310 are used to lead out positive and negative output terminals for external connection.

[0141] For example, each end of the connecting bracket 200 is provided with an embedded nut, and the connecting hole 203 can be a threaded hole for the embedded nut. The connector is a bolt, which passes through the mounting hole 311 of the end connecting piece 310 and is threadedly connected to the connecting hole 203 to fix the output terminal to the end of the connector.

[0142] In addition, the connector is inserted into the connection hole 203 through the mounting hole 311, which helps to further improve the stability of the end connector 310 on the connection bracket 200.

[0143] Combination Figures 7 to 9 As shown, in some embodiments, the connecting bracket 200 is provided with a connecting portion 240, and the first support frame 210, the second support frame 220 and the connecting portion 240 are integrally formed.

[0144] The first support frame 210, the second support frame 220 and the connecting part 240 are integrated into one piece, which can save the assembly steps of the first support frame 210 and the second support frame 220.

[0145] For example, the connecting bracket 200 can be integrally molded by injection molding, which improves the convenience of manufacturing and processing the connecting bracket 200.

[0146] Combination Figure 8 As shown, in some embodiments, the connecting part 240 is provided with a groove 241, the first inner wall 2411 of the groove 241 is connected to the first support frame 210, and the second inner wall 2412 of the groove 241 is connected to the second support frame 220; when the first support frame 210 and the second support frame 220 rotate through the connecting part 240, the first inner wall 2411 and the second inner wall 2412 of the groove 241 move closer to each other or further away from each other.

[0147] The opening of the groove 241 faces the side of the connecting bracket 200 away from the battery cell 100.

[0148] By providing a groove 241 in the connecting part 240, the first support frame 210 and the second support frame 220 of the connecting bracket 200 can rotate within a certain range to adapt to different installation requirements and operating conditions.

[0149] For example, both the first inner wall 2411 and the second inner wall 2412 are arc-shaped inner walls, and the concave arc surfaces of the first inner wall 2411 and the second inner wall 2412 are arranged opposite to each other.

[0150] When the second support frame 220 rotates away from the battery cell 100 relative to the first support frame 210, the first inner wall 2411 or the second inner wall 2412 of the groove 241 moves closer to each other; when the second support frame 220 rotates away from the battery cell 100 relative to the first support frame 210, the first inner wall 2411 or the second inner wall 2412 of the groove 241 moves further away from each other.

[0151] In practice, the first support frame 210 and the first electrode tab 110 can be installed first.

[0152] Before installation, the operator can manually bend the second support frame 220 to rotate it away from the battery cell 100 by a certain angle relative to the first support frame 210, so that the second support frame 220 will not come into contact with the second battery cell 100 during the installation of the first support frame 210.

[0153] Then align the first support frame 210 with the first tabs 110 of the multiple battery cells 100 so that the first support frame 210 fixes the first battery cell 100.

[0154] Finally, the second support frame 220 is rotated relative to the first support frame 210 closer to the battery cell 100. Since the position of the first support frame 210 is determined, the second support frame 220 can automatically align with the second tabs 120 of the multiple battery cells 100 after rotation, thus fixing the second support frame 220 to the second battery cell 100.

[0155] In some embodiments, the groove 241 is away from the cell 100, and the groove 241 can be reused to accommodate wires.

[0156] Specifically, after the connecting bracket 200 is connected to the tab, the groove 241 can also be used as a wire channel. For example, the groove 241 can be used to accommodate the wires in the sampling harness, making the internal wiring of the battery module neater and more aesthetically pleasing.

[0157] Specifically, the recess 241 significantly improves the space utilization efficiency and wiring management level of the battery module, and helps to improve the safety and reliability of electrical connections.

[0158] A second aspect of this application provides a battery pack, including the battery module provided in any of the above embodiments.

[0159] The battery module has been described in detail in the above embodiments and will not be repeated here.

[0160] For example, a battery pack may include one or more battery modules.

[0161] The battery pack can also be equipped with a battery management system to monitor and regulate the battery modules in order to achieve a more stable energy output.

[0162] A third aspect of this application provides an electrical device, including a battery pack or a battery module provided in any of the above embodiments.

[0163] The battery module and battery pack have been described in detail in the above embodiments and will not be repeated here.

[0164] For example, the electrical device could be an electric vehicle. A battery pack or battery module can power the main body of the electric vehicle.

[0165] Finally, it should be noted that those skilled in the art, upon considering the specification and practicing the application disclosed herein, will readily conceive of other embodiments of the present application. The embodiments of this application are intended to cover any variations, uses, or adaptations of the embodiments of this application that follow the general principles of the embodiments of this application and include common knowledge or customary technical means in the art not disclosed in the embodiments of this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments of this application are indicated by the following claims.

[0166] It should be understood that the embodiments of this application are not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments of this application is limited only by the appended claims.

Claims

1. A battery module, characterized in that, include: Multiple battery cells (100), each battery cell (100) having a first tab (110) and a second tab (120); the first tabs (110) of the multiple battery cells (100) are arranged in sequence at intervals, and the second tabs (120) of the multiple battery cells (100) are arranged in sequence at intervals; The connecting bracket (200) includes a first support frame (210) and a second support frame (220), the first support frame (210) and the second support frame (220) are movably connected, the first support frame (210) fixes a plurality of first tabs (110), and the second support frame (220) fixes a plurality of second tabs (120).

2. The battery module according to claim 1, characterized in that, The connecting bracket (200) is provided with a rotating component (230), and the first support frame (210) and the second support frame (220) are rotatably connected through the rotating component (230).

3. The battery module according to claim 2, characterized in that, The rotating component (230) is located on the surfaces of the first support frame (210) and the second support frame (220) away from the battery cell (100).

4. The battery module according to claim 2, characterized in that, The surface of the first support frame (210) facing the battery cell (100) is flush with the surface of the second support frame (220) facing the battery cell (100).

5. The battery module according to claim 1, characterized in that, The connecting bracket (200) is provided with a connecting part (240), and the first support frame (210), the second support frame (220) and the connecting part (240) are integrally formed.

6. The battery module according to claim 5, characterized in that, The connecting part (240) is provided with a groove (241), the first inner wall (2411) of the groove (241) is connected to the first support frame (210), and the second inner wall (2412) of the groove (241) is connected to the second support frame (220); When the first support frame (210) and the second support frame (220) rotate through the connecting part (240), the first inner wall (2411) and the second inner wall (2412) of the groove (241) move closer to each other or further away from each other.

7. The battery module according to claim 6, characterized in that, The groove (241) is away from the battery cell (100), and the groove (241) can be reused to accommodate wires.

8. The battery module according to claim 1, characterized in that, The first support frame (210) is provided with a plurality of first mounting ports (211), the first mounting ports (211) are correspondingly provided with the first electrode tabs (110), and the first electrode tabs (110) are inserted into the first mounting ports (211); The second support frame (220) is provided with a plurality of second mounting ports (221), the second mounting ports (221) are correspondingly provided with the second electrode tabs (120), and the second electrode tabs (120) are inserted into the second mounting ports (221).

9. The battery module according to claim 1, characterized in that, The first support frame (210) is provided with a plurality of first abutting parts (212) arranged at intervals in sequence. The first abutting parts (212) protrude toward the battery cell (100) and abut against the plurality of battery cells (100). The second support frame (220) is provided with a plurality of second abutment portions (222) arranged at intervals in sequence. The second abutment portions (222) protrude toward the battery cell (100) and abut against the plurality of battery cells (100).

10. The battery module according to claim 9, characterized in that, The width of the first abutting portion (212) facing the end of the battery cell (100) is smaller than the width of the first abutting portion (212) away from the end of the battery cell (100); And / or, the width of the second abutment (222) toward the end of the cell (100) is less than the width of the first abutment (212) away from the end of the cell (100).

11. The battery module according to claim 10, characterized in that, A first gap (213) is formed between two adjacent first abutment portions (212), and the first gap (213) accommodates the first electrode tab (110); A second gap (223) is formed between two adjacent second abutment portions (222), and the second gap (223) accommodates the second electrode tab (120).

12. The battery module according to any one of claims 1-11, characterized in that, The connecting bracket (200) has a mounting groove (201) on its surface away from the battery cell (100); The battery module includes a connecting piece (300) disposed within the mounting groove (201).

13. The battery module according to claim 12, characterized in that, A limiting element (202) is provided on the surface of the connecting bracket (200) away from the battery cell (100); At least a portion of the connecting piece (300) extends out of the mounting groove (201), and the portion of the connecting piece (300) extending out of the mounting groove (201) abuts against the limiting member (202).

14. The battery module according to claim 13, characterized in that, The connecting bracket (200) is provided with a connecting hole (203); The connecting piece (300) includes an end connecting piece (310), and the end connecting piece (310) is provided with a mounting hole (311); The battery module includes a connector. When the end connector (310) is disposed in the mounting groove (201), the mounting hole (311) and the connecting hole (203) are connected in a corresponding manner. The connector is inserted into the connecting hole (203) through the mounting hole (311).

15. A battery pack, characterized in that, Includes the battery module as described in any one of claims 1-14.

16. An electrical appliance, characterized in that, This includes the battery module as described in any one of claims 1-14, or the battery pack as described in claim 15.

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