Frame, frame components and battery pack

Abstract

This application relates to the field of battery technology and discloses a frame, frame assembly, and battery pack. The frame includes a pair of symmetrically arranged mounting plates, with space between the mounting plates for mounting single cells. Mounting structures are provided on the mounting plates corresponding to the positions of the single cells. The mounting structures are used to connect busbars so that part or all of the busbars are positioned above the single cells. As a result, the busbars can be arranged on the frame, eliminating the need for electrical isolation plates. This simplifies the internal structure of the battery pack, thereby simplifying assembly. Furthermore, the reduction in structural components can provide more internal mounting space for the box, helping to improve internal space utilization and thereby increasing the battery volume energy density. A battery pack with the above-mentioned frame also has the above-mentioned advantages.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a frame, a frame assembly and a battery pack. Background Art

[0002] As the primary power source for electric vehicles, power batteries require efficient utilization of limited space and increased energy density, crucial for meeting the long-range demands of new energy vehicles. Currently, most power batteries are assembled from multiple single cells into modules, which are then placed into a battery pack. This assembly method, with its numerous internal components, is not only complex but also occupies a significant amount of space within the battery pack. Within this established structure, optimizing the battery's volumetric energy density is challenging and limited. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a frame that can effectively improve the internal space utilization of the battery box, thereby increasing the volume energy density of the battery pack.

[0004] The present application also provides a surrounding frame assembly comprising the above-mentioned surrounding frame.

[0005] The present application also proposes a battery pack including the above-mentioned frame assembly.

[0006] According to the embodiment of the first aspect of the present application, the frame is used to position multiple single cells arranged in rows in a battery pack. The frame includes a pair of symmetrically arranged mounting plates, and there is a space for arranging single cells between the mounting plates. Multiple single cells can be arranged in rows between the mounting plates. Mounting structures are provided on the mounting plates corresponding to the positions of each single cell. The mounting structures are used to connect a bus bar so that part or all of the bus bar is located above the single cell.

[0007] The frame of the embodiment of the first aspect of the present application has at least the following beneficial effects: the space between the mounting plates is used to place single cells, and a mounting structure for connecting the bus is provided on the mounting plates. Therefore, during assembly, the mounting plates can realize the connection of the bus, so that part or the whole of the bus is located above the single cell, thereby facilitating electrical connection with the poles of the single cell, eliminating the need for an electrical isolation plate, thereby simplifying the internal structure of the battery pack and simplifying assembly. In addition, the reduction of structural parts can provide more internal installation space of the box, which helps to improve the utilization rate of the internal space and thus improve the volume energy density of the battery.

[0008] According to some embodiments of the present application, the mounting structure includes a first mounting platform, which is arranged at a position on the mounting plate corresponding to the top of the single cell. The first mounting platform protrudes inward from the inner wall of the mounting plate and is used to connect the busbar.

[0009] According to some embodiments of the present application, the mounting structure further includes a plurality of positioning pins, each of the positioning pins being arranged on the first mounting platform at a position corresponding to each of the single cells, the positioning pin being used to connect one end of the bus, and the other end of the bus connected to the positioning pin being able to be located above the single cell.

[0010] According to some embodiments of the present application, the mounting structure further includes a plurality of fixing positions, each of the fixing positions corresponding to the position of each of the single cells being arranged on a side of the first mounting platform away from the single cell, for accommodating the bus; the fixing positions are formed by a recess in the surface of the first mounting platform, and part or all of the bus accommodated in the fixing positions can be located above the single cell, and a through hole connected to the fixing position is provided on the side of the first mounting platform facing the single cell.

[0011] According to some embodiments of the present application, the mounting structure includes a second mounting platform, which is arranged at a position on the mounting plate corresponding to the top of the single cell. The second mounting platform protrudes outward from the inner wall of the mounting plate and is used to connect the bus.

[0012] According to some embodiments of the present application, the mounting structure further includes a plurality of positioning pins, each of the positioning pins being arranged on the second mounting platform at a position corresponding to each of the single cells, the positioning pin being used to connect one end of the bus, and the other end of the bus connected to the positioning pin being able to be located above the single cell.

[0013] According to some embodiments of the present application, a plurality of slots are provided between the mounting plates along the arrangement direction of the single battery cells, and each of the slots is used to place the single battery cells.

[0014] According to some embodiments of the present application, the mounting plate includes a plate body and a plurality of spacers, wherein the spacers are spaced apart on the mutually facing sides of the plate body along the arrangement direction of the single cells, grooves are defined between the spacers, and the grooves of the two mounting plates constitute the slots.

[0015] According to the second embodiment of the present application, the frame assembly includes:

[0016] The frame of the embodiment of the first aspect above;

[0017] A plurality of busbars are connected to the mounting structure and part or the whole of the busbars are located above the single cells, and each busbar is used to be electrically connected to the corresponding single cell.

[0018] The frame assembly of the second embodiment of the present application has at least the following beneficial effects: a bus is connected to the mounting plate, so that after assembly, the mounting plate can realize the connection between the bus and the single battery, eliminating the electrical isolation plate, thereby simplifying the internal structure of the battery pack and thus simplifying the assembly. In addition, the reduction of structural parts can provide more internal installation space of the box, which helps to improve the utilization of the internal space and thus improve the volume energy density of the battery.

[0019] A battery pack according to an embodiment of the third aspect of the present application includes:

[0020] Single battery;

[0021] In the frame assembly of the second embodiment of the present application, the single cells are arranged in rows between the mounting plates, and each busbar is electrically connected to a corresponding single cell;

[0022] The box body comprises a lower box body and a box cover, wherein the lower box body has an installation cavity, the surrounding frame and the single battery are placed in the installation cavity, and the box cover is arranged on the upper part of the installation cavity.

[0023] The battery pack of the third aspect embodiment of the present application has at least the following beneficial effects: the single cells are arranged between the mounting plates of the frame, the frame is arranged in the mounting cavity of the box body, and the single cells are fixed and the force is transmitted by the connection between the frame and the box body, thereby eliminating the end plates and side box plates of the traditional battery pack, simplifying the internal structure of the battery pack, and the arrangement of the frame assembly can eliminate the electrical isolation plate, thereby further simplifying the structure of the battery pack, thereby improving the internal space utilization and thus improving the battery volume energy density.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of a battery pack according to one embodiment of the present application;

[0027] Figure 2 for Figure 1 A schematic diagram of a partial structural explosion of the battery pack of the illustrated embodiment;

[0028] Figure 3 for Figure 1 An exploded schematic diagram of a single battery cell and a surrounding frame in a battery pack of the illustrated embodiment;

[0029] Figure 4 A structural diagram of the frame of an embodiment of the present application;

[0030] Figure 5 for Figure 4 A local enlarged view of location I in FIG;

[0031] Figure 6 for Figure 5 AA section view in;

[0032] Figure 7 For Figure 6 Schematic diagram of a structure of different enclosures;

[0033] Figure 8 For Figure 6 Schematic diagram of a structure of different enclosures;

[0034] Figure 9 For Figure 5 Another structural diagram of a frame having a different frame than that shown;

[0035] Figure 10 A schematic structural diagram of a frame and an insulating plug board according to another embodiment;

[0036] Figure 11 for Figure 9 Cross-sectional view at BB in the figure;

[0037] Figure 12 is a schematic structural diagram of a frame in a battery pack according to another embodiment;

[0038] Figure 13 is a schematic structural diagram of a frame in a battery pack according to another embodiment;

[0039] Figure 14 This is a schematic cross-sectional view of the battery pack according to an embodiment of the present application, taken along a direction perpendicular to the arrangement of the single cells.

[0040] Reference numerals:

[0041] Single cell 100, top portion 120 of the single cell, bottom portion 130 of the single cell, side portion 140 of the single cell;

[0042] Frame 200, slot 210, busbar 220, mounting plate 230, plate body 231, spacer 232, bottom bracket 233, first mounting platform 234, positioning pin 235, second mounting platform 236, groove 237, fixing position 238, through hole 239, plug-in slot 240, connecting plate 250, insulating plug-in plate 260, shoulder 270;

[0043] Box body 300, box cover 310, lower box body 320, bottom plate 321, side box plate 322, flow channel 323, installation cavity 330, sealing member 340, positioning platform 350;

[0044] Data acquisition system 400 , battery control unit 500 , power distribution box 600 , connector 700 . DETAILED DESCRIPTION

[0045] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0046] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0047] In the description of this application, "several" means more than one, and "above," "below," and "within" are understood to include the number itself. The use of terms such as "first," "second," and so on is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0048] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0049] In the description of this application, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0050] Currently, the structure of most power batteries is primarily: a cell frame supports individual cells, multiple cells form a cell pack, and multiple cell packs are combined into a cell module. End plates are connected at both ends of the cell module, and side panels are provided on both sides to support the load. An electrical isolation plate is installed above the cell module, and a busbar is installed on the electrical isolation plate and connected to the wiring harness. A top cover is installed above the electrical isolation plate and connected to the end plates and side panels, thereby forming a battery pack. This assembly method has numerous internal components, which is not only complex to assemble, but also occupies a large amount of internal space in the battery box, resulting in low volume space utilization, small space optimization, and great difficulty. In contrast, the battery pack of the embodiment of the present application adopts a structure in which the individual cells directly form a battery pack (CTP) and provide a frame for positioning the individual cells. Compared with the above method, some structural components can be eliminated, thereby freeing up more internal installation space for the installation of the individual cells, helping to improve internal space utilization or reduce battery size, simplify assembly, and can reduce costs to a certain extent.

[0051] Figure 1 This is a schematic diagram of the three-dimensional structure of a battery pack according to an embodiment of the present application. Figure 2 for Figure 1 A schematic diagram of a partial structural breakdown of the battery pack of the embodiment shown, Figure 3 This is a schematic diagram of the exploded frame and single battery of the embodiment of the present application, refer to Figures 1 to 3 The battery pack of the embodiment of the present application includes a box body 300, a frame 200 and a plurality of single cells 100. Busbars 220 are further provided on the frame 200 at positions corresponding to the single cells 100. The busbars 220 are used to electrically connect to the single cells 100.

[0052] The box body 300 includes a lower box body 320 and a box cover 310. The lower box body 320 includes side box plates 322 and a bottom plate 321. The side box plates 322 and the bottom plate 321 enclose an installation cavity 330. The frame 200 and the single cells 100 are placed in the installation cavity 330, and each single cell 100 is connected to the bottom plate 321. The box cover 310 is covered on the upper part of the installation cavity 330 and is detachably connected to the side box plates 322.

[0053] Thus, the single cell 100 is fixed and the force is transmitted by connecting the frame 200 and the box body 300, eliminating the end plates and side plates of the traditional battery pack, and the bus 220 is arranged on the frame 200, eliminating the electrical isolation plate. Therefore, the structure of the battery pack is simplified, thereby simplifying the assembly. In addition, the reduction of structural parts can provide more installation space inside the box body, which helps to improve the utilization of the internal space and thus improve the battery volume energy density.

[0054] refer to Figure 3The present invention provides an enclosure for positioning multiple single cells arranged in a row within a battery pack. The enclosure 200 includes a pair of symmetrically arranged mounting plates 230, spaced apart from each other. This creates a space between the mounting plates 230 for positioning the single cells. The single cells 100 can be arranged in a row within the space between the mounting plates 230, achieving positioning on both sides of the single cells 100. Mounting structures are provided on the mounting plates 230 corresponding to the positions of the single cells 100. These mounting structures are used to connect to busbars 220, positioning the busbars 220 partially or entirely above the single cells 100. Therefore, during assembly, the mounting plates 230 both position the multiple single cells 100 and connect the busbars 220, positioning the busbars 220 partially or entirely above the single cells 100. This facilitates electrical connection to the terminals of the single cells 100, eliminating the need for electrical isolation plates. This simplifies the internal structure of the battery pack and improves internal space utilization.

[0055] Figure 4 This is a structural diagram of the frame of an embodiment of the present application. Figure 5 for Figure 4 The local enlarged view of point I in the figure, Figure 6 for Figure 5 AA section view in, refer to Figures 4 to 6 In some embodiments of the enclosure, the mounting structure includes a first mounting platform 234 , which is disposed on the mounting plate 230 at a position corresponding to the top of the single cell 100 . The first mounting platform 234 protrudes inward from the inner wall of the mounting plate 230 and is used to connect the bus 220 .

[0056] Based on the above embodiments, Figures 6 to 9 Several embodiments of the enclosure and busbar are shown: Figure 6 , the mounting structure for connecting the busbar 220 may further include a positioning pin 235 for positioning the busbar 220, the positioning pin 235 may be provided on the first mounting platform 234 of the frame 200; or, referring to Figure 7 Alternatively, the positioning pins 235 can be positioned on the top of the mounting plate 230 at positions corresponding to the individual cells 100. In this case, the first mounting platform 234 can be removed from the mounting plate, and corresponding positioning holes can be provided on the busbar 220 for mating with the positioning pins 235. This pin-hole arrangement allows for the busbar 220 to be positioned, facilitating rapid assembly and positioning of the busbar 220. The positioning pins 235 facilitate mechanized assembly of the busbar 220, thereby improving assembly efficiency. The busbar 220 can be positioned and assembled after the two mounting plates 230 of the frame 200 are clamped onto the sides of the individual cells 100.

[0057] In some other embodiments, reference Figure 8 The first mounting platform 234 can extend toward and above the single cell 100. A fixing portion 238 for securing the busbar 220 is provided on the first mounting platform 234. The fixing portion 238 can be a groove recessed downward from the surface of the first mounting platform 234 facing away from the single cell 100, thereby accommodating the busbar 220. The edge of the groove wall of the fixing portion 238 can position the busbar 220, thereby ensuring the consistency of the assembly of the busbar 220. A through hole 239 is provided on the side of the first mounting platform 234 facing the single cell 100, which is connected to the fixing portion 238. As a result, after the busbar 220 is secured to the first mounting platform 234 of the frame 200, it can be positioned above the single cell 100 and connected to the terminal of the single cell 100 through the through hole 239. During assembly, the frame 200 and the single battery 100 can be assembled first, and then the busbar 220 can be connected to the corresponding fixing position 238 on the frame 200. Alternatively, the busbar 220 can be fixedly connected to the fixing position 238 on the frame 200 first, and then the frame 200 with the busbar 220 can be clamped on both sides of the single battery 100, with the busbar 220 corresponding to the pole of the single battery 100. In this way, the busbar 220 can be pre-installed on the frame 200 and assembled together with the frame 200 before the single battery 100, the frame 200 and the box 300 are finally assembled, which helps to optimize the assembly process.

[0058] In some embodiments, reference Figure 11 The mounting structure includes a second mounting platform 236, which is arranged at a position on the mounting plate 230 corresponding to the top 120 of the single cell 100. Unlike the above embodiment, the second mounting platform 236 protrudes outward from the inner wall of the mounting plate 230 and is used to connect the bus 220, and the second mounting platform 236 does not form a limit on the top of the single cell 100. Therefore, the single cell 100 can be inserted between the mounting plates 230 from the upper part of the mounting plate 230.

[0059] In some embodiments, positioning pins 235 may be provided on the second mounting platform 236 at positions corresponding to the individual cells 100. Positioning holes may be provided at corresponding positions on the busbar 220, and the pins and holes cooperate to position the busbar 220. This facilitates rapid positioning and assembly of the busbar 220. The positioning pins 235 facilitate mechanized assembly of the busbar 220, thereby improving assembly efficiency. Positioning and assembly of the busbar 220 can be performed after the individual cells 100 are installed in the enclosure 200.

[0060] As can be seen from the above embodiment, the enclosure 200 of the present application embodiment is provided with a mounting structure for connecting the busbar 220. Thus, the busbar 220 can be mounted on the enclosure 200, facilitating the connection between the busbar and the individual cells during battery pack assembly. This eliminates the need for an electrical isolation plate, thereby simplifying the internal structure of the battery pack, thereby simplifying assembly and reducing costs. Furthermore, the reduction in structural components provides more internal installation space for the box, helping to improve internal space utilization and thereby increasing the battery's volumetric energy density.

[0061] refer to Figures 4 to 8 In some embodiments, the mounting plate 230 of the enclosure has multiple slots 210 along the arrangement direction of the single cells 100. Each slot 210 is used to accommodate a single cell 100, thereby positioning and installing the single cells 100 without the need for a separate fixing frame for each single cell. Mounting structures are provided on the mounting plate 230 corresponding to each slot 210. These mounting structures are used to connect to the busbar 220, so that part or all of the busbar 220 is suspended above the slot 210. This allows the busbar 220 to be positioned above the single cell 100, thereby facilitating electrical connection with the corresponding terminal of the single cell 100.

[0062] In this embodiment, the mounting plates 230 have multiple grooves 237 disposed on the facing sides thereof, along the arrangement direction of the cells 100. The grooves 237 on the two mounting plates 230 correspond to each other, and the corresponding grooves 237 form slots 210 for accommodating the cells 100 and securing the sides of the cells 100. The frame 200 formed by the two mounting plates 230 is open on both sides relative to the top 120 and bottom of the cells. Therefore, the top 120 of the cells can be exposed through the slots 210 of the frame 200 for electrical connection, and the bottom 130 of the cells can be connected to the bottom plate 321 of the housing 300. In specific implementations, the slots 210 can also be formed using other methods, for example, by disposing multiple partitions between the mounting plates 230 along the arrangement direction of the cells, with the partitions connected to the mounting plates 230 on either side, thereby forming a slot between adjacent partitions.

[0063] The frame 200 can be a monolithic structure or a split structure consisting of multiple structural components. During assembly, the individual cells 100 can be first installed in the frame 200, and then the frame 200 with the individual cells 100 can be installed in the box 300. Alternatively, the frame 200 can be first installed in the battery box, and then the individual cells 100 can be installed in the slots 210 of the frame 200. During actual assembly, the assembly method can be adjusted appropriately based on the specific structure of the frame 200 and the method of fixing the individual cells 100 to the frame 200.

[0064] In some embodiments, each mounting plate 230 includes a plate body 231 and spacers 232. The spacers 232 are spaced apart on the mutually facing sides of the plate body 231 along the arrangement direction of the single cells 100. The mounting plate 230 is provided with a bottom support 233 corresponding to the bottom of the single cell 100. The bottom support 233 extends toward the inner side of the plate body 231 to below the spacers 232, thereby supporting the bottom 130 of the single cell from below the side 140 of the single cell. A first mounting platform 234 is provided on the mounting plate 230 at a position corresponding to the top 120 of the single cell. The first mounting platform 234 extends inward from the plate 231 to above the spacer 232, thereby securing the top 120 of the single cell from above the side 140 of the single cell. Thus, the spaces between adjacent spacers 232, the first mounting platforms 234, and the base 233 together form the aforementioned grooves 237 for securing the side 140, top 120, and bottom 130 of the single cell. The two corresponding grooves 237 on the mounting plates 230 form the slots 210 for positioning the single cell 100. Furthermore, after the busbar 220 is connected to the first mounting platform 234, it can be suspended above the slot 210, thereby facilitating connection with the single cell 100 in the corresponding slot 210.

[0065] During assembly, simply align the grooves 237 on the two mounting plates 230 with the sides of the individual cells 100. Then, clamp the mounting plates 230 between the two sides of the individual cells 100. This positions the individual cells 100 on the two mounting plates 230 to form a battery assembly, which can then be placed into the battery box. In this embodiment, the two mounting plates 230 that comprise the frame 200 are separate structures, allowing installation from either side of the individual cells 100. The top and bottom of the individual cells 100 are restrained by the grooves 237.

[0066] Figure 9 For Figure 5 Another structural diagram of a frame having a different frame is shown. Figure 10 This is a structural diagram of the surrounding frame and the insulating plug board in another embodiment. Figure 11 for Figure 9 The BB section view in the figure also refers to Figures 9 to 11In one embodiment of a battery pack, the frame 200 includes two symmetrically arranged mounting plates 230. Each mounting plate 230 of the frame 200 includes a plate body 231 and spacers 232. The spacers 232 are spaced apart on opposite sides of the plate body 231 along the arrangement direction of the cells 100. Bottom brackets 233 are provided on the bottom of the frame 200 on either side of the cells 100. The bottom brackets 233 extend inward from the plate body 231 to below the spacers 232, thereby supporting the bottoms 130 of the cells from below the sides 140 of the cells. Adjacent spacers 232 and bottom brackets 233 together form the aforementioned grooves 237 for retaining the sides 140 and bottoms of the cells. The opposing grooves 237 on the two mounting plates 230 form slots 210 for positioning the cells 100. The frame 200 has openings corresponding to the tops 120 of the cells for inserting the cells 100. During assembly, the individual cells 100 can be first inserted into the slots 210 from above the frame 200. The frame 200 and individual cells 100 form a battery assembly, which can then be placed in the housing 300 for subsequent assembly. Alternatively, the frame 200 and housing 300 can be assembled first, followed by the individual cells 100 being inserted into the slots 210 from above the frame 200. Connecting plates 250 can also be provided at the ends of the two mounting plates 230. The connecting plates 250 can be connected to the mounting plates 230 by snapping, or removably connected to the mounting plates 230 via connectors, or integrally connected to the mounting plates 230 by welding, riveting, or the like. Alternatively, the connecting plates 250 and the mounting plates 230 can be integrally formed through an integral molding process.

[0067] Figure 12 For another structural diagram of the mounting plate, refer to Figure 12Unlike the above-mentioned embodiments, this embodiment does not include a bottom bracket. The frame 200 includes two symmetrically arranged mounting plates 230. Each mounting plate 230 includes a plate body 231 and spacers 232. The spacers 232 are spaced apart and arranged on mutually facing sides of the plate body 231 along the arrangement direction of the single cells 100. First mounting platforms 234 are provided at the top of the frame 200 corresponding to both sides of the single cells 100. The first mounting platforms 234 extend inward from the plate body 231 to above the spacers 232, thereby securing the top 120 of the single cells from above the side 140 of the single cells. Thus, adjacent spacers 232 and the first mounting platforms 234 together form the aforementioned grooves 237 for securing the side 140 and top of the single cells. The frame 200 has openings corresponding to the bottom 130 of the single cells for inserting the single cells 100. During assembly, the frame 200 can be inverted, and the single battery 100 can be installed in the slot 210 of the frame 200 in a manner such that the top 120 of the single battery is inserted into the opening at the bottom of the frame 200. The top and bottom of the two sides of the single battery 100 are restrained in the groove 237. The subsequent assembly of the box 300 can also be done in an inverted manner. The single battery 100 can be first inserted into the slot 210 from the bottom of the frame 200. The frame 200 and the single battery 100 form a battery assembly. The lower box 320 of the box 300 is then partially covered outside the battery assembly for subsequent assembly.

[0068] In this embodiment, the mounting plate 230 may be provided with positioning pins 235 for positioning the busbar 220. Figures 12 to 13 Several embodiments are shown, for example: the positioning pin 235 can be set on the top of the mounting plate 230 corresponding to the position of the single battery 100 (refer to Figure 12 Alternatively, the positioning pin 235 may also be provided on the first mounting platform 234 of the frame 200 (see Figure 13 ), the busbar 220 can be provided with corresponding positioning holes for cooperating with the positioning pins 235 for installation. The pin-hole cooperation realizes the positioning of the busbar 220, facilitating the rapid positioning and assembly of the busbar 220. During assembly, the busbar 220 can be first positioned and fixed on the frame 200, and then the frame 200 is inverted and the single cells 100 are loaded. The frame 200, busbar 220 and single cells 100 form a battery assembly, and then the lower case 320 of the box 300 is partially covered outside the battery assembly. Alternatively, the single cells 100 can be loaded into the frame 200 to form a battery assembly, and then the lower case 320 of the box 300 is partially covered outside the battery assembly, and then the busbar 220 is fixed and assembled.

[0069] In this embodiment, reference Figure 9 and Figure 10The ends of the two mounting plates 230 can also be connected to a connecting plate 250. The connecting plate 250 can be connected to the mounting plate 230 by snapping, or detachably connected to the mounting plate 230 via a connector, or integrally connected to the mounting plate 230 by welding, riveting, etc., or the connecting plate 250 and the mounting plate 230 can be integrally formed through an integral molding process. The connecting plate 250 can be provided at one end of the mounting plate 230, and an insulating plug 260 can be provided at the other end. The two sides of the insulating plug 260 can be abutted between the single cells 100 located at the end and the housing 300. As a result, the expansion force of the single cell pack composed of multiple single cells 100 along the arrangement direction of the single cells 100 can be directly transmitted to the housing 300 through the insulating plug 260, thus achieving a method of directly transmitting force from the single cells 100 to the housing 300.

[0070] In some embodiments, the frame 200 is provided with a plurality of insulating plates 260 along the arrangement direction of the cells 100. The insulating plates 260 are used to support the cells 100 in the arrangement direction. Therefore, when the frame 200 of the present invention is used in a battery pack structure, the frame 200 and the cells 100 can be directly assembled into the battery pack case. The insulating plates 260 can resist the expansion force of the cells 100, eliminating the need for structural components to assemble the cells 100 into a module, thereby simplifying the structure and assembly. Furthermore, the reduction in structural components can provide more internal installation space within the case, helping to improve internal space utilization and thus increase the volumetric energy density of the battery pack. Specifically, the positions on the frame 200 where the insulating plates 260 are required can be provided with plate slots 240, thereby allowing the insulating plates 260 to be connected to the frame 200 by plugging. This simple connection method facilitates quick assembly. Specifically, taking the solution of setting an insulating plug plate 260 at the end of the frame 200 as an example, the two mounting plates 230 of the frame 200 have grooves with openings facing each other at opposite positions. The two grooves are respectively used to accommodate the corresponding side edges of the insulating plug plate 260, forming the plug plate slot 240. Therefore, the insulating plug plate 260 can be inserted into the grooves corresponding to the edges of the two side grooves to achieve plug-in installation.

[0071] As can be seen from the above embodiment, the frame 200 of the present application is provided with multiple slots 210 for receiving the individual cells 100, thereby positioning and securing the individual cells 100. Furthermore, the busbars 220 are provided on the frame 200, eliminating the need for electrical isolation plates. This simplifies the internal structure of the battery pack and thus simplifies assembly. Furthermore, the reduction in structural components provides more internal installation space for the box, helping to improve internal space utilization and thereby increase the battery's volumetric energy density.

[0072] refer to Figure 2The present embodiment provides a frame assembly comprising the frame 200 of the above embodiment and a plurality of busbars 220. The busbars 220 are connected to mounting structures provided on a mounting plate 230 and are positioned above corresponding cells 100. Each busbar 220 is configured to electrically connect to a corresponding cell 100. Thus, after the frame of this embodiment is assembled with the cells 100, the mounting plate 230 connects the busbars 220 to the cells 100, eliminating the need for an electrical isolation plate. This simplifies the internal structure of the battery pack, thereby simplifying assembly, improving internal space utilization, and thereby increasing the volumetric energy density of the battery.

[0073] As can be seen from the above embodiments, in the frame 200 of some embodiments, slots 210 are further provided between the mounting plates 230, and the single cells 100 are positioned through the slots 210. Thus, after the busbar 220 is connected to the mounting structure provided on the mounting plate 230, it can correspond to the upper part of the single cells 100 located in each slot 210. The mounting plate 230 can not only position multiple single cells 100, but also realize the connection between the busbar 220 and the single cells 100.

[0074] The present application also provides a battery pack having the aforementioned enclosure assembly, further comprising a plurality of single cells 100 and a housing 300. The housing 300 comprises a lower housing 320 and a housing cover 310. The lower housing 320 is provided with a mounting cavity 330. The single cells 100 are positioned between the mounting plates 230 of the enclosure 200, and the enclosure 200 is positioned within the mounting cavity 330 of the lower housing 320. The connection between the enclosure 200 and the housing 300 secures the single cells 100 and transmits force. This eliminates the need for end plates and side plates in conventional battery packs, simplifying the internal structure of the battery pack. Furthermore, the provision of the enclosure assembly eliminates the need for electrical isolation plates, further simplifying the battery pack structure. The battery pack of this embodiment improves internal space utilization, thereby increasing the battery volumetric energy density.

[0075] refer to Figure 2 and Figure 14 In the battery pack provided in one embodiment of the present application, the outer wall of the mounting plate 230 is provided with an outwardly protruding shoulder 270. The shoulder 270 can be a single, long strip extending along the arrangement direction of the cells 100, or a plurality of protrusions arranged along the arrangement direction of the cells 100. Positioning platforms 350 are provided on the side panels 322 of the box body 300. After the frame 200 is placed in the box body 300, the shoulder 270 is placed on the positioning platforms 350, and the outer edge of the shoulder 270 abuts against the inner wall of the side panel 322. As a result, the acceleration force of the cells 100 is transferred to the box body 300 through the outer wall of the mounting plate 230 and the shoulder 270, thereby achieving a method of directly transmitting force from the cells 100 to the box body 300.

[0076] In addition, after the bottom 130 of the single cell 100 is connected to the bottom of the box 300, the bending and torsion of the single cell group formed by multiple single cells 100 along the length direction are restricted by the bottom plate 321 of the box 300, thereby increasing the section moment of inertia of the single cell group in the length direction and effectively solving the problem of small mode of the single cell group in the length direction.

[0077] In the battery pack of some embodiments, the lower box body 320 includes side box plates 322 and a bottom plate 321. A flow channel 323 for introducing coolant is provided on or inside the bottom plate 321. Therefore, the bottom plate 321 is cooled by the coolant, and the single battery 100 connected to the bottom plate 321 can also be cooled. This realizes a method of directly transferring heat from the single battery 100 to the box body 300, eliminating the intermediate heat transfer component, achieving efficient heat transfer, and releasing more internal space, thereby helping to improve the space utilization inside the battery.

[0078] The battery pack of the above-described embodiment also includes a data acquisition system 400, a battery control unit 500, and a distribution box 600. The data acquisition system 400 is electrically connected to the individual cells 100 to collect relevant data from the individual cells 100. The battery control unit 500 is electrically connected to the data acquisition system 400 and the distribution box 600 to achieve overall battery control. The distribution box 600 is also connected to connectors for external connections (including high-voltage connectors, low-voltage connectors, etc.). A cavity for accommodating the distribution box 600 is also provided on one end of the housing 300, located in the direction in which the individual cells 100 are arranged. This cavity is separated from the mounting cavity 330 for mounting the enclosure 200 by a side panel. The battery pack of the present embodiment can employ the data acquisition system 400, battery control unit 500, and distribution box 600 conventionally used in battery packs in the known art, and their control principles are not detailed here.

[0079] In some battery pack embodiments, the lower case 320 is provided with two mounting cavities 330. Each mounting cavity 330 is assembled with a frame 200 and a single battery cell 100 using the assembly method described above, forming a battery pack comprising two battery assemblies. The lower case 320 can be constructed by connecting multiple side panels 322, or can be formed integrally through an integrated molding process. Furthermore, a seal 340 can be provided between the cover 310 and the lower case 320 to effectively isolate the battery from external moisture.

[0080] As can be seen from the above, the frame, frame assembly, and battery pack of the embodiments of the present application achieve direct assembly of single cells and the casing. Compared with the solution of forming a battery pack through assembly of battery cell modules, the internal structural parts of the battery pack are reduced, thereby simplifying the assembly process and helping to reduce costs. In addition, the reduction of structural parts can free up more internal space, so more single cells can be arranged, increasing the energy density of the battery pack, or reducing the overall volume of the battery pack while keeping the number of single cells unchanged, thereby meeting the envelope requirements during actual use. By changing the force transmission method of the single cell, the mechanical properties are effectively improved, and assembly is easy, while meeting functional and safety requirements while also reducing costs.

[0081] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Various modifications can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features of the embodiments can be combined with each other unless there is a conflict.

Claims

1. A frame assembly, characterized in that: include: A frame, the frame being used to position a plurality of single cells arranged in a row in a battery pack, the frame comprising a pair of symmetrically arranged mounting plates, a space being provided between the mounting plates for arranging the single cells, the multiple single cells being capable of being arranged in a row between the mounting plates, the mounting plates being provided with a bottom bracket corresponding to the bottom of the single cells, the bottom bracket being used to support the bottom of the single cells, a mounting structure being provided on the mounting plates at a position corresponding to each of the single cells, the mounting structure being used to connect a busbar so that part or all of the busbar is located above the single cells, the mounting structure comprising a first mounting platform and a plurality of positioning pins, the first mounting platform being provided at a position on the mounting plate corresponding to the top of the single cells, the first mounting platform protruding inwardly from an inner wall of the mounting plate, and each of the positioning pins being provided at a position on the first mounting platform corresponding to each of the single cells; A plurality of busbars are provided, wherein the positioning pin is used to connect one end of the busbar, and the other end of the busbar connected to the positioning pin can be located above the single battery. Each busbar is used to be electrically connected to the corresponding single battery.

2. The frame assembly according to claim 1, wherein: The mounting structure also includes a plurality of fixing positions, each of which corresponds to the position of each single cell and is arranged on a side of the first mounting platform away from the single cell, for accommodating the bus; the fixing positions are formed by recesses in the surface of the first mounting platform, and part or all of the bus accommodated in the fixing positions can be located above the single cell, and a through hole connected to the fixing position is opened on the side of the first mounting platform facing the single cell.

3. The frame assembly is characterized in that: include: A frame, the frame being used to position a plurality of single cells arranged in a row in a battery pack, the frame comprising a pair of symmetrically arranged mounting plates, a space being provided between the mounting plates for arranging the single cells, the multiple single cells being capable of being arranged in a row between the mounting plates, the mounting plates being provided with a bottom bracket corresponding to the bottom of the single cells, the bottom bracket being used to support the bottom of the single cells, a mounting structure being provided on the mounting plates at a position corresponding to each of the single cells, the mounting structure comprising a second mounting platform and a plurality of positioning pins, the second mounting platform being provided on the mounting plates at a position corresponding to the top of the single cells, the second mounting platform protruding outwardly from the inner wall of the mounting plates, and each of the positioning pins being provided on the second mounting platform at a position corresponding to each of the single cells; A plurality of busbars are provided, wherein the positioning pin is used to connect one end of the busbar, and the other end of the busbar connected to the positioning pin can be located above the single battery. Each busbar is used to be electrically connected to the corresponding single battery.

4. The frame assembly according to any one of claims 1 to 3, characterized in that: A plurality of slots are provided between the mounting plates along the arrangement direction of the single cells, and each of the slots is used to place the single cells.

5. The frame assembly according to claim 4, wherein: The mounting plate includes a plate body and a plurality of spacers, wherein the spacers are spaced apart and arranged on mutually facing sides of the plate body along the arrangement direction of the single cells. Grooves are defined between the spacers, and the grooves of the two mounting plates form the slots.

6. A battery pack, characterized in that: include: Single battery; The frame assembly according to any one of claims 1 to 5, wherein the single cells are arranged in rows between the mounting plates, and each of the busbars is electrically connected to a corresponding single cell; The box body comprises a lower box body and a box cover, wherein the lower box body has an installation cavity, the surrounding frame and the single battery are placed in the installation cavity, and the box cover is sealed on the upper part of the installation cavity.

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