Battery cell group module and battery pack

Abstract

The utility model provides a battery cell group module and a battery pack, the battery cell group module comprises a plurality of battery cell stacking bodies, the plurality of battery cell stacking bodies are arranged along a first direction, and each battery cell stacking body comprises a plurality of battery cells stacked along a second direction; the connecting assembly comprises at least one connecting beam and at least two groups of connecting belts, the connecting beams are arranged between every two adjacent battery cell stacking bodies, and the connecting belts are arranged at the two ends, distributed in the first direction, of a whole formed by the multiple battery cell stacking bodies; and the two side plate groups are positioned on the two sides, distributed in the second direction, of the battery cell stacking body, and the two side plate groups are connected through a connecting assembly and clamp and fix the battery cell stacking body. According to the battery cell group module and the battery pack provided by the invention, the connecting beams located at the two ends of the plurality of battery cell stacking bodies in the first direction are replaced by the connecting belts, so that the number of the connecting beams in the battery cell group module is reduced, and the material cost, the weight and the occupied space of the battery cell group module can be effectively reduced.

Description

Technical Field

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

[0002] A battery pack can contain multiple battery modules, each battery module including at least one cell stack, and each cell stack including multiple stacked cells.

[0003] In order to keep multiple cells stacked, battery modules usually need to be equipped with a housing or frame structure to accommodate the cells, which leads to higher material costs and more complex assembly processes for battery packs. Utility Model Content

[0004] In view of this, the purpose of this application is to propose a cell assembly module and a battery pack to at least partially solve the problem of high material costs of battery packs.

[0005] Based on the above objectives, a first aspect of this application provides a battery cell assembly module, comprising: a plurality of battery cell stacks arranged along a first direction, each battery cell stack including a plurality of battery cells stacked along a second direction; a connecting assembly including at least one connecting beam and at least two sets of connecting straps, wherein the connecting beam is arranged between adjacent battery cell stacks, and the connecting straps are arranged at both ends of the assembly formed by the plurality of battery cell stacks along the first direction; and two side plate assemblies located on both sides of the battery cell stacks distributed along the second direction, the two side plate assemblies being connected and clamped to fix the battery cell stacks by the connecting assembly.

[0006] Optionally, the connecting strip includes a strip body extending along a second direction, with both ends of the strip body connected to the two side plate assemblies in a one-to-one correspondence.

[0007] Optionally, the end of the belt body is formed with one of a hook and a positioning groove, and the side plate assembly is formed with the other, wherein the hook is hooked to the positioning groove.

[0008] Optionally, the connecting strip includes a first connecting portion and the hook, the first connecting portion being connected to the strip body, and the hook being connected to the side of the first connecting portion near the side plate assembly; the positioning groove is formed on the wall surface of the side plate assembly.

[0009] Optionally, the connecting strap includes a first connecting portion, a second connecting portion, and the hook. The strap body is at least connected to the first connecting portion. One end of the second connecting portion is connected to the side of the first connecting portion near the side plate assembly, and the other end is connected to the hook. An angle is formed between the first connecting portion and the second connecting portion. The side plate assembly includes a first surface near the cell stack and a second surface adjacent to the first surface. The second surface forms a receiving groove. The groove wall near the cell stack forms the positioning groove. At least a portion of the second connecting portion is inserted into the receiving groove so that the hook is hooked into the positioning groove.

[0010] Optionally, at least two receiving grooves are formed on the same second surface along the second direction, and the positioning groove is formed on the groove wall of each receiving groove near the cell stack.

[0011] Optionally, the strip is connected to the first connecting portion and the second connecting portion respectively; and / or, the strip is connected to the side of the first connecting portion near the cell stack.

[0012] Optionally, the first connecting portion is provided with a force-applying hole.

[0013] Optionally, the force-applying hole is located on the side of the first connection portion away from the cell stack.

[0014] Optionally, the end of the belt is formed with a hook, and the connecting belt is hooked to the side plate assembly through the hook.

[0015] Optionally, each of the side plate groups includes a plurality of side plate segments distributed along a first direction and detachably connected. The side plate segments located on both sides of the same cell stack are detachably connected to the connecting beam located at at least one end of the corresponding cell stack along the first direction, and clamp and fix the cell stack when connected.

[0016] Optionally, the cell assembly module further includes a battery management system, which includes multiple slave control boards. Each side panel segment is equipped with a slave control board, and the slave control board is electrically connected to the cell stack corresponding to the side panel segment.

[0017] Optionally, the battery cell includes a pouch cell.

[0018] Optionally, each set of connecting strips includes at least two connecting strips, and the two ends of the two side plate sets are connected one-to-one with the two sets of connecting strips along the first direction.

[0019] Based on the same inventive concept, a second aspect of this application also provides a battery pack, including: a housing, and a cell assembly module as described in the first aspect connected to the housing.

[0020] Optionally, the housing includes a plate-shaped lower housing, and the side panel assembly is connected to the lower housing by fasteners.

[0021] As can be seen from the above, the cell module and battery pack provided in this application provide tension to the two side plate groups through connecting straps and connecting beams. This allows the two side plate groups to clamp and fix the cell stack located between the two side plate groups, ensuring that the multiple cells in the cell stack can remain stacked. This application replaces the connecting beams located at both ends of the multiple cell stacks along the first direction with connecting straps to reduce the number of connecting beams in the cell module. Since the material cost, weight, and volume of connecting straps are all less than those of connecting beams, reducing the number of connecting beams can effectively reduce the material cost, weight, and space occupied by the cell module, contributing to a higher energy density in the battery pack using the cell module of this application. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a partial schematic diagram of the battery pack module according to an embodiment of this application;

[0024] Figure 2 This is a side view of a battery cell module according to an embodiment of this application.

[0025] Figure 3 for Figure 2 Schematic diagram of the cross-section BB in the middle;

[0026] Figure 4 for Figure 3 An enlarged schematic diagram of the first structure in section C;

[0027] Figure 5 for Figure 3 An enlarged schematic diagram of the second structure in section C;

[0028] Figure 6 for Figure 3 An enlarged schematic diagram of the third structure in section C;

[0029] Figure 7 for Figure 1An enlarged schematic diagram of part A in the middle;

[0030] Figure 8 This is a schematic diagram of the connection strip of the battery pack module according to an embodiment of this application;

[0031] Figure 9 for Figure 8 An enlarged schematic diagram of section D in the middle;

[0032] Figure 10 for Figure 3 Enlarged schematic diagram of the fourth structure in section C;

[0033] Figure 11 This is a partial structural diagram of the battery pack according to an embodiment of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1000, Cell assembly module; 100, Cell stack; 110, Cell; 200, Side plate assembly; 210, Receiving slot; 220, First surface; 230, Second surface; 240, Side plate segment; 300, Connecting assembly; 310, Connecting belt; 311, Belt body; 312, First connecting part; 313, Second connecting part; 314, Force application hole; 320, Connecting beam; 330, Positioning slot; 340, Hook;

[0036] 2000, enclosure; 2100, lower enclosure;

[0037] 3000, Fasteners. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0039] It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components described in these embodiments do not limit the scope of this application.

[0040] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0041] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.

[0042] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] Figure 1 This shows a partial schematic diagram of the battery cell module 1000. Figure 2 A side view of the battery cell module 1000 is shown.

[0044] like Figure 1 and Figure 2 This application provides a battery cell assembly module 1000, including: a plurality of battery cell stacks 100, the plurality of battery cell stacks 100 being arranged along a first direction (e.g., Figure 1 The cells are arranged in the X direction, and each cell stack 100 includes multiple cells arranged along the second direction (e.g., the X direction). Figure 1 The battery cells 110 are stacked in the Y direction; the connecting assembly 300 includes at least one connecting beam 320 and at least two sets of connecting straps 310, with connecting beams 320 arranged between each two adjacent battery cell stacks 100, and connecting straps 310 arranged at both ends of the overall structure formed by the multiple battery cell stacks 100 distributed along the first direction; two side plate groups 200 are located on both sides of the battery cell stacks 100 distributed along the second direction, and the two side plate groups 200 are connected and clamped to fix the battery cell stacks 100 by the connecting assembly 300.

[0045] For example, the connecting beam 300 can be connected to the side plate assembly 200 by means of plug-in, snap-fit, adhesive connection, bolt connection or welding.

[0046] For example, the connecting strip 310 can be connected to the side panel assembly 200 by means of binding, welding, hooking or bolting.

[0047] For example, each set of connecting strips 310 includes at least two connecting strips 310, and the two ends of the two side plate groups 200 are connected one-to-one with the two sets of connecting strips 310 along the first direction. That is, multiple connecting strips 310 can be provided at the same end of the cell stack 100, and the multiple connecting strips 310 can be along the height direction of the cell 110 (e.g., ...). Figure 1 (Z-direction) interval settings.

[0048] Combination Figure 1 It can be understood that the connecting beam 320 in the connecting assembly 300 is connected to the middle of the side plate assembly 200 (i.e., between the two ends of the side plate assembly 200 along the length direction), and the connecting strap 310 is connected to the end of the side plate assembly 200. Both the connecting beam 320 and the connecting strap 310 can provide tension to the two side plate assemblies 200. Under the combined action of the connecting beam 320 and the connecting strap 310, the two side plate assemblies 200 can generate compressive force on the battery cell stack 100 from the opposite sides of the battery cell stack 100, clamping the battery cell stack 100 and ensuring that the multiple battery cells 110 in the battery cell stack 100 can maintain a stacked state.

[0049] The cell assembly module 1000 provided in this embodiment provides tension to two side plate assemblies 200 through connecting straps 310 and connecting beams 320, thereby allowing the two side plate assemblies 200 to clamp the cell stack 100 located between the two side plate assemblies 200, ensuring that the multiple cells 110 in the cell stack 100 can remain stacked. In this embodiment, the connecting beams 320 located at both ends of the multiple cell stacks 100 along the first direction are replaced with connecting straps 310, reducing the number of connecting beams 320 in the cell assembly module 1000. Since the material cost, weight, and volume of the connecting straps 310 are all less than those of the connecting beams 320, reducing the number of connecting beams 320 can effectively reduce the material cost, weight, and space occupied by the cell assembly module 1000, contributing to a higher energy density in the battery pack using the cell assembly module 1000 of this embodiment.

[0050] Figure 3 Showing Figure 2 Schematic diagram of the cross section BB in the middle.

[0051] like Figure 3 In some embodiments, the connecting strap 310 includes a strap body 311 extending in a second direction, with both ends of the strap body 311 corresponding to two side plate assemblies 200.

[0052] For example, the strap 311 may include a metal strap or a plastic strap.

[0053] For example, the belt body 311 can be connected to the side plate assembly 200 by welding, bolting or hooking.

[0054] For example, each connecting strip 310 may include one strip body 311 or at least two strip bodies 311. When the same connecting strip 310 includes at least two strip bodies 311, the at least two strip bodies 311 may be distributed along the height direction of the cell 110 or along the length direction of the side plate assembly 200.

[0055] Since the cell stack 100 includes multiple cells 110 and has a large volume, if a binding method is used to connect the strap 311 to the side plate assembly 200, the length of the strap 311 will be too long, resulting in a higher material cost for the connecting strap 310. At the same time, due to the large weight of the cell stack 100, flipping the cell stack 100 is inconvenient, which will also cause inconvenience to the binding strap 311.

[0056] To avoid the aforementioned problems, this embodiment connects the end of the tape body 311 to the side plate assembly 200. This makes the length of the tape body 311 of the connecting tape 310 approximately equal to the distance between the two side plate assemblies 200, which helps to shorten the length of the tape body 311 and reduce material costs. Simultaneously, in this embodiment, the tape body 311 of the connecting tape 310 is connected to the side plate assembly 200 at its end. Compared to winding the tape body 311 around the side plate assembly 200, this effectively reduces the number of times the cell stack 100 is flipped, lowers the assembly difficulty of the cell assembly module 1000, and helps improve assembly efficiency.

[0057] In some embodiments, the end of the belt body 311 is formed with one of a hook 340 and a positioning groove 330, and the side plate assembly 200 is formed with the other, wherein the hook 340 is hooked into the positioning groove 330.

[0058] Specifically, Figure 4 Showing Figure 3 An enlarged schematic diagram of the first structure in section C. (See diagram below.) Figure 4 The end of the belt body 311 has a protruding hook 340, and the side plate assembly 200 has a recessed positioning groove 330. During connection, the hook 340 at the end of the belt body 311 can be inserted into the positioning groove 330. When the hook 340 hooks the groove wall of the positioning groove 330 near the battery cell 110, the connection between the belt body 310 and the side plate assembly 200 can be achieved.

[0059] Figure 5 Showing Figure 3 An enlarged schematic diagram of the second structure in section C.

[0060] In addition to the connection methods described above, the connecting strip 310 and the side panel assembly 200 can also be connected in other ways, such as... Figure 5Furthermore, a positioning groove 330 can be formed at the end of the belt body 311, and a hook 340 can be formed on the side plate assembly 200. During connection, the end of the belt body 311 can be hooked onto the hook 340 of the side plate assembly 200 through the positioning groove 330. When the hook 340 extends into the positioning groove 330 and hooks onto the groove wall of the positioning groove 330 away from the battery cell 110, the connection between the belt body 310 and the side plate assembly 200 can be achieved.

[0061] By using hooks 340 and positioning grooves 330 to connect the connecting strip 310 to the side plate assembly 200, the assembly process of the connecting strip 310 and the side plate assembly 200 can be effectively simplified, the assembly difficulty can be reduced, and the production efficiency of the battery cell module 1000 can be improved.

[0062] like Figure 4 In some embodiments, the connecting strap 310 includes a first connecting portion 312 and a hook 340. The first connecting portion 312 is connected to the strap body 311, and the hook 340 is connected to the side of the first connecting portion 312 near the side plate assembly 200. The positioning groove 330 is formed on the wall surface of the side plate assembly 200.

[0063] For example, each end of the same belt body 311 is connected to a first connecting part 312.

[0064] For example, the first connecting part 312 can be connected to the belt body 311 by means of welding, bolting, snap-fitting or integral molding.

[0065] For example, the hook 340 can be connected to the first connecting part 312 by means of welding, bolting, snap-fitting or integral molding.

[0066] By providing a first connecting portion 312 between the hook 340 and the belt body 311, a larger connection area can be achieved between the belt body 311 and the first connecting portion 312, thereby improving the connection reliability between the hook 340 and the belt body 311. Simultaneously, the selection of materials and the design of the width of the belt body 311 can be more flexible, which is more conducive to reducing the material cost of the connecting belt 310.

[0067] Figure 6 Showing Figure 3 An enlarged schematic diagram of the third structure in section C.

[0068] like Figure 6In some embodiments, the connecting strap 310 includes a first connecting portion 312, a second connecting portion 313, and a hook 340. The strap body 311 is at least connected to the first connecting portion 312. One end of the second connecting portion 313 is connected to the side of the first connecting portion 312 near the side plate assembly 200, and the other end is connected to the hook 340. An angle is formed between the first connecting portion 312 and the second connecting portion 313. The side plate assembly 200 includes a first surface 220 near the cell stack 100 and a second surface 230 adjacent to the first surface 220. The second surface 230 forms a receiving groove 210. The groove wall of the receiving groove 210 near the cell stack 100 forms a positioning groove 330. At least a portion of the second connecting portion 313 is inserted into the receiving groove 210 so that the hook 340 is hooked into the positioning groove 330.

[0069] For example, the first connecting portion 312 and the second connecting portion 313 are perpendicular to each other and are configured into an L-shaped structure.

[0070] For example, the second connecting part 313 and the first connecting part 312 can be connected by welding, bolting, snap-fitting or integral molding.

[0071] For example, the hook 340 can be connected to the second connecting part 313 by means of welding, bolting, snap-fitting or integral molding.

[0072] Figure 7 Showing Figure 1 An enlarged diagram of part A in the middle, with Figure 7 Taking the structure and orientation shown as an example, the second surface 230 of the side panel assembly 200 can be the top surface of the side panel assembly 200, or along the length direction of the side panel assembly 200 (e.g., Figure 7 The end surface or bottom surface in the X direction.

[0073] For example, the side panel assembly 200 can be a hollow profile, the cavity of which can extend to the second surface 230 to form a receiving groove 210.

[0074] In this embodiment, since the second connecting part 313 forms an angle with the first connecting part 312, and the second connecting part 313 is inserted into the receiving groove 210 when the connecting strip 310 is connected to the side plate assembly 200, the cooperation between the second connecting part 313 and the receiving groove 210 can further ensure the reliability of the connection between the connecting part and the side plate assembly 200, in addition to the hook 340 hooking with the positioning groove 330. At the same time, both the hook 340 and the positioning groove 330 are located inside the side plate assembly 200, and the hook 340 can be protected by the side plate assembly 200 to prevent the hook 340 from being damaged or from coming out of the positioning groove 330 during the handling, assembly and use of the battery cell module 1000.

[0075] like Figure 6 In some embodiments, at least two receiving grooves 210 are formed on the same second surface 230 along the second direction, and each receiving groove 210 has a positioning groove 330 formed on the groove wall near the cell stack 100.

[0076] After the cell stack 100 is assembled, its actual dimensions along the second direction may differ from the design dimensions. Correspondingly, the actual distance between the two side plate assemblies 200 will also differ from the design distance. If the positions of the receiving slots 210 and positioning slots 330 on the side plate assembly 200 are determined solely according to the design dimensions, there may be difficulties in the actual hooking of the hook 340 of the connecting strap 310 with the positioning slot 330.

[0077] To avoid the aforementioned problems, this embodiment forms at least two receiving grooves 210 along the second direction on the side plate assembly 200. When the connecting strip 310 is connected to the side plate assembly 200, the second connecting part 313 can be inserted into a suitable receiving groove 210 according to the actual situation. This can reduce the connection difficulty between the connecting strip 310 and the side plate assembly 200, and ensure that the connecting strip 310 exerts a pulling force on the two side plate assemblies 200 that meets the process requirements, thereby ensuring that the battery cells 110 can maintain a stacked state.

[0078] Figure 8 A schematic diagram of the connecting strip 310 is shown. Figure 9 Showing Figure 8 An enlarged schematic diagram of part D in the middle.

[0079] like Figure 8 and Figure 9 In some embodiments, the belt 311 is connected to the first connecting portion 312 and the second connecting portion 313 respectively.

[0080] As can be seen from the foregoing, the first connecting part 312 and the second connecting part 313 are at a certain angle. When the belt body 311 is connected to the first connecting part 312 and the second connecting part 313 respectively, the first connecting part 312 and the second connecting part 313 can provide force to the belt body 311 from two different directions, thereby further ensuring the reliability of the connection between the belt body 311 and the hook 340, and ensuring that the connecting belt 310 can provide a stable and reliable tension to the two side plate assemblies 200.

[0081] like Figure 6 In some embodiments, the strip 311 is connected to the side of the first connection portion 312 near the cell stack 100.

[0082] For example, when the connecting strip 310 includes the second connecting portion 313, the strip body 311 can also be connected to the side of the second connecting portion 313 near the cell stack 100.

[0083] Connecting the strip 311 to the side of the first connecting portion 312 near the cell stack 100 makes the exposed surface of the first connecting portion 312 cleaner, which helps improve the appearance of the cell assembly module 1000. At the same time, since the first connecting portion 312 is located on the outside of the end of the strip 311, the first connecting portion 312 can also provide cover protection for the end of the strip 311, further ensuring the reliability of the connection between the strip 311 and the first connecting portion 312, and ensuring that the connecting strip 310 can provide stable and reliable tension to the two side plate assemblies 200.

[0084] like Figure 6 and Figure 7 In some embodiments, the first connecting portion 312 is provided with a force-applying hole 314.

[0085] For example, with Figure 7 Taking the structure and orientation shown as an example, the force application hole 314 can be set on the side of the first connecting part 312 away from the battery cell stack 100, or it can be set on the top of the first connecting part 312, or it can be set on the bottom of the first connecting part 312.

[0086] When connecting the connecting strap 310 and the side plate assembly 200, a tool can be inserted into the force application hole 314, and then force can be applied to the first connecting part 312 with the tool to insert the hook 340 into the positioning groove 330, thus completing the hooking of the hook 340 with the positioning groove 330. After the connecting strap 310 and the side plate assembly 200 are connected, the tool can be pulled out from the force application hole 314.

[0087] Compared to manually pulling the first connecting part 312, applying force to the first connecting part 312 with a tool is more labor-saving and easier to position, and can prevent the first connecting part 312 from slipping out of the hand during the application of force.

[0088] like Figure 7 In some embodiments, the force application hole 314 is disposed on the side of the first connection portion 312 away from the cell stack 100.

[0089] In this embodiment, the force-applying hole 314 can penetrate the first connecting part 312 to facilitate the insertion of the tool into the force-applying hole 314, and to facilitate the operator or equipment to apply force to the first connecting part 312 through the tool, which can effectively reduce the assembly difficulty between the connecting strip 310 and the side plate assembly 200.

[0090] Figure 10 Showing Figure 3 An enlarged schematic diagram of the fourth structure in section C.

[0091] like Figure 10In some embodiments, the end of the belt body 311 is formed with a hook 340, and the connecting belt 310 is hooked to the side plate assembly 200 through the hook 340.

[0092] In this embodiment, the side plate assembly 200 may not have the positioning groove 330. Instead, the hook 340 can be hooked onto the surface of the side plate assembly 200 that is away from the cell stack 100. The two side plate assemblies 200 can still be pulled by the connecting strap 310. This helps to reduce the processing difficulty of the side plate assembly 200, thereby reducing the manufacturing cost of the cell assembly module 1000.

[0093] like Figure 1 In some embodiments, each side plate group 200 includes a plurality of side plate segments 240 distributed along a first direction and detachably connected. The side plate segments 240 located on both sides of the same cell stack 100 are detachably connected to a connecting beam 300 located at at least one end of the corresponding cell stack 100 along the first direction, and clamp and fix the cell stack 100 when connected.

[0094] For example, two adjacent side plate segments 240 can be detachably connected end to end by means of bolts or snap-fit. The side plate segments 240 and the connecting beam 300 can also be detachably connected end to end by means of bolts or snap-fit.

[0095] For example, in two adjacent side plate segments 240, the beginning end of one is stacked with the end end of the other, and the connecting beam 300 corresponds to the stacked portion of the side plate segment 240. Bolts pass through the stacked portion of the side plate segment 240 and connect to the corresponding connecting beam 300. By using the same bolt, the two adjacent side plate segments 240 and the connecting beam 300 can be fixed together, reducing the number of bolts in the battery cell module 1000. This not only helps reduce the material cost of the battery cell module 1000 but also simplifies the assembly process and improves assembly efficiency.

[0096] Each cell stack 100 is provided with a pair of side plate segments 240. The pair of side plate segments 240 can reliably clamp the cell stack 100 under the action of the connecting beam 300 connected to them.

[0097] The side plate assembly 200 in this embodiment adopts a modular design. The length of the side plate assembly 200 can be adjusted by increasing or decreasing the number of side plate segments 240, so that the side plate assembly 200 can provide a stable clamping force for different numbers of battery cell stacks 100. At the same time, the modular design can also effectively reduce the number of specifications of the side plate assembly 200 and reduce material management costs.

[0098] Meanwhile, the adjacent side plate sections 240 and the side plate section 240 and the connecting beam 300 are detachable, which makes the battery cell module 1000 have good maintainability.

[0099] like Figure 6 In some embodiments, the cell pack module 1000 further includes a battery management system, which includes multiple slave control boards. Each side plate segment 240 is equipped with a slave control board, and the slave control board is electrically connected to the cell stack 100 corresponding to the side plate segment 240.

[0100] For example, the control panel and side panel segment 240 can be connected by adhesive, snap-fit, or bolt.

[0101] It should be noted that for the same side panel group 200, the side panel segments 240 included therein correspond one-to-one with the cell stack 100, and the slave control board connected to the side panel segment 240 can also correspond one-to-one with the cell stack 100.

[0102] The slave control board is electrically connected to multiple cells 110 in the corresponding cell stack 100, enabling it to collect voltage and temperature data of each connected cell 110 and perform real-time monitoring. The slave control board can also communicate with the main control board in the battery management system, allowing it to send data to or receive control commands from the main control board.

[0103] The slave control board is connected to the side plate segment 240, which can fix the slave control board in a preset position and form a reliable connection with the battery cell 110 and / or other devices. In this embodiment, it eliminates the need for a separate fixing bracket for the slave control board in the battery cell module 1000, which helps improve the internal space utilization of the battery cell module 1000 and increase its energy density.

[0104] In some embodiments, cell 110 includes pouch cell.

[0105] The two side plate assemblies 200 can clamp the multiple cells 110 stacked in the cell stack 100. Even if the cell 110 is a soft-pack cell, the multiple soft-pack cells in the cell stack 100 can be kept in a stacked state, which is convenient for assembly and transportation.

[0106] Based on the same inventive concept and in conjunction with the description of the cell assembly module 1000 in the above embodiments, this embodiment provides a battery pack that has the corresponding technical effects of the cell assembly module 1000 in the above embodiments, which will not be repeated here.

[0107] Figure 11 A partial structural diagram of the battery pack is shown.

[0108] like Figure 11 This embodiment provides a battery pack, including: a housing 2000, and a cell assembly module 1000 as described in the above embodiments connected to the housing 2000.

[0109] For example, the battery cell module 1000 can be connected to the housing 2000 by means of plug-in, snap-in, adhesive connection, welding or bolt connection.

[0110] In this embodiment, the cell assembly module 1000 can be directly connected to the housing 2000, eliminating the need to assemble the cell assembly module 1000 into a battery module. This not only reduces the number of battery pack components and material costs, simplifies the assembly process, and improves assembly efficiency, but also helps to increase the energy density of the battery pack.

[0111] like Figure 11 In some embodiments, the housing 2000 includes a plate-shaped lower housing 2100, and the side panel assembly 200 is connected to the lower housing 2100 by fasteners 3000.

[0112] For example, the housing 2000 may also include a cover, and the lower housing 2100 may also include a flange surrounding the battery cell module 1000, the lower housing 2100 being connected to the cover via the flange.

[0113] For example, fastener 3000 can be a bolt, screw, or threaded post.

[0114] After the fastener 3000 passes through the side plate assembly 200, one end of the fastener 3000 extending out of the side plate assembly 200 can be connected to the lower housing 2100 (for example, when the fastener 3000 is a bolt, and the lower end extends out of the side plate assembly 200, it can be threadedly connected to the lower housing 2100), and the other end (for example, the nut of the bolt) can abut against the side plate assembly 200 so that the side plate assembly 200 and the lower housing 2100 are fitted and fixed, thereby realizing the connection between the battery cell module 1000 and the housing 2000.

[0115] It should be noted that some embodiments of this application have been described above. Other embodiments are within the scope of the appended claims.

[0116] The various embodiments in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0117] The description in this application is given for illustrative purposes and is not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of this application and to enable those skilled in the art to understand this application and design various embodiments with various modifications suitable for a particular purpose.

[0118] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0119] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0120] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A battery cell assembly module, characterized in that, include: Multiple battery cell stacks are arranged along a first direction, and each battery cell stack includes multiple battery cells stacked along a second direction. The connecting assembly includes at least one connecting beam and at least two sets of connecting strips. The connecting beam is arranged between each of two adjacent cell stacks, and the connecting strips are arranged at both ends of the whole formed by the plurality of cell stacks distributed along the first direction. Two side plate assemblies are located on both sides of the cell stack along the second direction, and the two side plate assemblies are connected and clamped to fix the cell stack by the connecting assembly.

2. The cell assembly module according to claim 1, characterized in that, The connecting belt includes a belt body extending along a second direction, and the two ends of the belt body are connected to the two side plate assemblies one-to-one.

3. The battery cell module according to claim 2, characterized in that, The end of the belt body is formed with one of a hook and a positioning groove, and the side plate assembly is formed with the other, wherein the hook is hooked to the positioning groove.

4. The cell assembly module according to claim 3, characterized in that, The connecting strap includes a first connecting portion and the hook, the first connecting portion being connected to the strap body, and the hook being connected to the side of the first connecting portion near the side plate assembly; The positioning groove is formed on the wall surface of the side plate assembly.

5. The cell assembly module according to claim 3, characterized in that, The connecting strap includes a first connecting part, a second connecting part, and the hook. The strap body is at least connected to the first connecting part. One end of the second connecting part is connected to the side of the first connecting part near the side plate assembly, and the other end is connected to the hook. An angle is formed between the first connecting part and the second connecting part. The side plate assembly includes a first surface near the cell stack and a second surface adjacent to the first surface. The second surface has a receiving groove, and the groove wall near the cell stack has a positioning groove. At least a portion of the second connecting part is inserted into the receiving groove so that the hook is hooked into the positioning groove.

6. The cell assembly module according to claim 5, characterized in that, At least two receiving grooves are formed on the same second surface along the second direction, and the positioning groove is formed on the groove wall of each receiving groove near the cell stack.

7. The cell assembly module according to claim 5, characterized in that, The belt is connected to the first connecting portion and the second connecting portion respectively; and / or, The strip is connected to the side of the first connection portion near the cell stack.

8. The cell assembly module according to claim 4 or 5, characterized in that, The first connecting part is provided with a force application hole.

9. The cell assembly module according to claim 8, characterized in that, The force-applying hole is located on the side of the first connection portion away from the cell stack.

10. The cell assembly module according to claim 2, characterized in that, The end of the belt is formed with a hook, and the connecting belt is hooked to the side plate assembly through the hook.

11. The cell assembly module according to claim 1, characterized in that, Each of the side plate groups includes a plurality of side plate segments distributed along a first direction and detachably connected. The side plate segments located on both sides of the same cell stack are detachably connected to the connecting beam located at at least one end of the corresponding cell stack along the first direction, and clamp and fix the cell stack when connected.

12. The cell assembly module according to claim 11, characterized in that, The cell assembly module also includes a battery management system, which includes multiple slave control boards. Each side panel segment is equipped with a slave control board, and the slave control board is electrically connected to the cell stack corresponding to the side panel segment.

13. The cell assembly module according to claim 1, characterized in that, The battery cells include pouch cells.

14. The cell assembly module according to claim 1, characterized in that, Each set of connecting strips includes at least two connecting strips, and the two ends of the two side plate sets are connected one-to-one with the two sets of connecting strips along the first direction.

15. A battery pack, characterized in that, include: The housing, and the cell assembly module as described in any one of claims 1 to 14 connected to the housing.

16. The battery pack according to claim 15, characterized in that, The enclosure includes a plate-shaped lower enclosure, and the side panel assembly is connected to the lower enclosure by fasteners.

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