Battery assembly structure and battery module

Abstract

To provide a battery assembly structure and a battery module in which a combination of a series connection and a parallel connection is adapted to use of a high-output device, and a process of replacement and assembly is simplified.SOLUTION: A battery assembly structure may include a holder 100 provided with a first through hole group. An electrical connection plate is provided on a holder, a first connection terminal group 202 is provided on a first plate surface of the electrical connection plate, a second connection terminal group is provided on a second plate surface of the electrical connection plate, the first connection terminal group is connected to the second connection terminal group, the second connection terminal group is provided corresponding to a first through hole group, and the first connection terminal group is connected to a pouch cell group, and a pouch cell included in the pouch cell group is connected to the first connection terminal group. According to use of a high-power device, the second connection terminal group of the electrical connection plate is provided corresponding to the first through hole group of the holder, and an electrical load or an external power source may be directly connected to the second connection terminal group via the first through hole group, and the electrical load or the external power source is electrically connected to the pouch cell group.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present application relates to the technical field of batteries, and in particular to battery assembly structures and battery modules. [Background technology]

[0002] Pouch batteries are formed by encasing liquid lithium-ion batteries in a polymer outer casing, and have the advantages of excellent safety performance, light weight, and flexible design. Pouch cells can be used as replaceable batteries and are widely used in portable appliances, power tools, and other application scenarios. To meet the requirements of device use, pouch cell assembly design allows pouch cells to be used in devices with external or built-in replaceable batteries.

[0003] In the prior art, pouch cells used in external batteries and battery-powered devices cannot be combined in series or parallel connections to suit the use of high-power devices, and are expensive and require complicated replacement and assembly processes. Summary of the Invention

[0004] Based on this, in order to address the problems of replaceable pouch cells in the prior art, it is necessary to provide a battery assembly structure and a battery module that can be combined in series or parallel connections to suit the use of high-power devices and that can simplify the replacement and assembly processes.

[0005] According to a first aspect, the present application provides a battery assembly structure, which includes: a holder provided with a first group of through holes;

[0006] and an electrical connection plate provided on the holder, wherein a first group of connection terminals is provided on a first plate surface of the electrical connection plate, a second group of connection terminals is provided on a second plate surface of the electrical connection plate, the first group of connection terminals is connected to the second group of connection terminals, the second group of connection terminals is provided corresponding to the first group of through holes, and the first group of connection terminals is used to connect the group of pouch cells.

[0007] In one embodiment, the holder is provided with a first positioning group, and the electrical connection plate is provided with a second positioning group;

[0008] A second positioning group is provided corresponding to the first positioning group.

[0009] In one embodiment, the first positioning group includes a plurality of first positioning portions, and the second positioning group includes a plurality of second positioning portions, and the second positioning portions are distributed along the first side edge of the electrical connection plate;

[0010] The second positioning portions are provided in one-to-one correspondence with the first positioning portions.

[0011] In one embodiment, the first positioning group further includes a plurality of third positioning portions, and the second positioning group further includes a plurality of fourth positioning portions, the fourth positioning portions being distributed along the second side edge of the electrical connection plate;

[0012] The fourth positioning portions are provided in one-to-one correspondence with the third positioning portions.

[0013] In one embodiment, the holder is further provided with a first limiting group,

[0014] The first limiting group is the electrical connection plate. Location Restrictions Used to:

[0015] In one embodiment, the holder further includes a guide member, the pouch cell group includes a plurality of pouch cells, and each pouch cell is connected to the first connection terminal group;

[0016] The guide member is Rotate It is used to induce people to do something.

[0017] In one embodiment, the guide member is provided with a guide surface, the guide surface being adapted to guide each pouch cell. Rotate Induce them to do so.

[0018] In one embodiment, the battery assembly structure further includes an outer casing, and the holder further includes an attachment portion;

[0019] The outer casing is used to encase the pouch cells, and a first end of the outer casing is provided to the attachment portion of the holder.

[0020] According to a second aspect, the present application provides a battery module including a group of pouch cells and the battery assembly structure according to any one of the above claims, wherein the group of pouch cells is connected to the battery assembly structure.

[0021] In one embodiment, the pouch cell group includes a plurality of pouch cells, an extension plate is provided on a first end surface of the pouch cell, an electrode connection piece is provided on the extension plate, and the electrode connection piece of each pouch cell is respectively connected to the first connection terminal group.

[0022] In one embodiment, the pouch cell group further includes a spacer, and the spacer is provided between the first end surface of the pouch cell and the electrode connection piece.

[0023] One of the above technical solutions has the following advantages and beneficial effects:

[0024] The battery assembly structure includes a holder and an electrical connection plate, wherein the holder is provided with a first group of through holes, the electrical connection plate is provided with a first group of connection terminals on a first plate surface of the electrical connection plate, and a second group of connection terminals on a second plate surface of the electrical connection plate, the first group of connection terminals being connected to the second group of connection terminals, and the second group of connection terminals being provided corresponding to the first group of through holes, the first group of connection terminals being used to connect the pouch cell group, and further, the pouch cells included in the pouch cell group can be connected to the first group of connection terminals by means of series connection and parallel connection, thereby realizing assembly and replacement of the pouch cells. In this application, an electrical connection plate is fixed and supported by a holder, and a pouch cell group is connected by a first connection terminal group of the electrical connection plate, so that each pouch cell included in the pouch cell group can be connected in series or in parallel. In order to accommodate the use of high-power equipment, a second connection terminal group of the electrical connection plate is provided corresponding to the first through-hole group of the holder, and further, an electrical load or an external power source can be directly connected to the second connection terminal group through the first through-hole group, thereby realizing an electrical connection between the electrical load or external power source and the pouch cell group, thereby simplifying the process of replacing and assembling the pouch cells. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a schematic diagram of a three-dimensional structure of a battery assembly structure according to an embodiment of the present application; [Figure 2] 1 is an exploded structural schematic view of a battery assembly structure according to an embodiment of the present application from a first perspective; [Figure 3] 2 is a schematic exploded view of a battery assembly structure according to an embodiment of the present application from a second perspective; FIG. [Figure 4] 1 is a partial cross-sectional structural schematic diagram of a battery assembly structure according to an embodiment of the present application; [Figure 5] FIG. 5 is an enlarged view of a portion A in FIG. [Figure 6] 1 is a schematic diagram of a three-dimensional structure of a battery module according to an embodiment of the present application; [Figure 7] 1 is an exploded structural schematic diagram of a battery module according to an embodiment of the present application, viewed from a first perspective; [Figure 8]2 is a schematic exploded structural view of a battery module according to an embodiment of the present application, viewed from a second perspective; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0026] In order to help those skilled in the art to better understand the solutions of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application, and obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present application.

[0027] As an explanation, terms such as "first," "second," and the like in the specification, claims, and brief description of the drawings of this application are used to distinguish between similar objects and are not necessarily used to describe a particular sequence or chronological order. It is understood that such terms used are interchangeable under appropriate circumstances for the embodiments of this application described herein. Also, the terms "comprise," "have," and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to the explicitly listed steps or units, but may include other steps or units not explicitly listed or inherent to the process, method, product, or apparatus.

[0028] In this application, the orientations or positional relationships indicated by the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," "longitudinal," etc. are based on the orientations or positional relationships shown in the drawings. These terms are primarily used to better explain this application and its examples, and are not intended to limit the fact that the devices, elements, or components shown must have a particular orientation or must be constructed and operated in a particular orientation.

[0029] Furthermore, some of the above terms may express meanings other than orientation or positional relationships, for example, the term "on" may also be used to express a dependency or connection relationship. Those skilled in the art will be able to understand the specific meanings of these terms in this application in specific situations.

[0030] Also, the term "plurality" shall mean two or more.

[0031] It should be noted that, provided there is no conflict, the embodiments and features of the embodiments in the present application may be combined with each other. The present application will now be described in detail with reference to the drawings and examples.

[0032] In one embodiment, as shown in Figures 1, 2, 3 and 8, a battery assembly structure is provided, which includes a holder 100 and an electrical connection base 200, wherein a first group of through holes 102 is provided in the holder 100, an electrical connection plate 200 is provided in the holder 100, a first group of connection terminals 202 is provided on a first plate surface of the electrical connection plate 200, a second group of connection terminals 204 is provided on a second plate surface of the electrical connection plate 200, the first group of connection terminals 202 are connected to the second group of connection terminals 204, the second group of connection terminals 204 are provided corresponding to the first group of through holes 102, and the first group of connection terminals 202 are used to connect a pouch cell group 400.

[0033] The holder 100 is used to secure the electrical connection plate 200 and may be an insulating holder 100 structure made of a metal or non-metal material. Illustratively, an insulating layer is coated on the outer surface of the holder 100, thereby preventing short-circuiting between the holder 100 and the electrical connections. The holder 100 is provided with a first through-hole group 102, which may be composed of a plurality of first through-holes. The number of first through-holes is determined by the number of second connection terminals included in the second connection terminal group 204. For example, the second connection terminal group 204 may include three second connection terminals, and the first through-hole group 102 may include three corresponding first through-holes. Alternatively, the second connection terminal group 204 may include a total positive electrode connection terminal and a total negative electrode connection terminal, and the first through-hole group 102 may include two first through-holes.

[0034] The electrical connection plate 200 is attached to the holder 100 by means of adhesion, engagement, or screw connection, thereby realizing the electrical connection plate 200 being fixedly attached to the holder 100. The electrical connection plate 200 may be a circuit board, for example, the electrical connection plate 200 may include a substrate on which wiring layers are provided, and the wiring layers are connected to the first connection terminal group 202 and the second connection terminal group 204, respectively, thereby establishing an electrical connection between the first connection terminal group 202 and the second connection terminal group 204.

[0035] The electrical connection plate 200 may have a rectangular structure, with a first plate surface and a second plate surface thereof facing each other. The electrical connection plate 200 is provided with a first connection terminal group 202, which is composed of a plurality of first connection terminals, the number of which is determined by the number of pouch cells 402 included in the pouch cell group 400. The first connection terminals may be metal connection pieces or copper terminals of an FPC (Flexible Printed Circuit). For example, the pouch cell group 400 includes two pouch cells 402, and the first connection terminal group 202 includes four first connection terminals. Furthermore, the first connection terminal group 202 includes two sets of first connection terminals, each set including one first positive electrode connection terminal and one first negative electrode connection terminal.

[0036] For example, the pouch cell group 400 includes two pouch cells 402. In the pouch cell group 400 applied to a combination of serial connections, the first positive electrode connection terminal of the first set is connected to the first negative electrode connection terminal of the second set, the first positive electrode connection terminal of the second set is connected to the collective positive electrode connection terminal of the second connection terminal group 204, and the first negative electrode connection terminal of the first set is connected to the collective negative electrode connection terminal of the second connection terminal group 204. By connecting the positive electrode terminal of the first pouch cell 402 to the first negative electrode connection terminal of the first set, the negative electrode terminal of the first pouch cell 402 is connected to the first negative electrode connection terminal of the first set. Furthermore, by connecting the positive electrode terminal of the second pouch cell 402 to the first negative electrode connection terminal of the second set, the negative electrode terminal of the second pouch cell 402 is connected to the first negative electrode connection terminal of the second set. Furthermore, an assembly of two pouch cells 402 connected in series is realized.

[0037] In another example, for example, the pouch cell group 400 includes two pouch cells 402, and for the pouch cell group 400 applied to the parallel connection combination, the first positive electrode connection terminal of the first set is connected to the first positive electrode connection terminal of the second set, the first negative electrode connection terminal of the first set is connected to the first negative electrode connection terminal of the second set, the first positive electrode connection terminal of the first set and the first positive electrode connection terminal of the second set are respectively connected to the overall positive electrode connection terminal of the second connection terminal group 204, and the first negative electrode connection terminal of the first set and the first negative electrode connection terminal of the second set are respectively connected to the overall positive electrode connection terminal of the second connection terminal group 204. Each pouch cell 402 is connected to the total negative electrode connection terminal of the second connection terminal group 204, and by connecting the positive electrode terminal of the first pouch cell 402 to the first negative electrode connection terminal of the first set, the negative electrode terminal of the first pouch cell 402 is connected to the first negative electrode connection terminal of the first set, and by connecting the positive electrode terminal of the second pouch cell 402 to the first negative electrode connection terminal of the second set, the negative electrode terminal of the second pouch cell 402 is connected to the first negative electrode connection terminal of the second set, and further, an assembly of two pouch cells 402 connected in parallel is realized.

[0038] In the above embodiment, a first group of through holes 102 is provided on the holder 100, an electrical connection plate 200 is provided on the holder 100, a first group of connection terminals 202 is provided on a first plate surface of the electrical connection plate 200, a second group of connection terminals 204 is provided on a second plate surface of the electrical connection plate 200, the first group of connection terminals 202 is connected to the second group of connection terminals 204, the second group of connection terminals 204 is provided corresponding to the first group of through holes 102, the first group of connection terminals 202 is used to connect the pouch cell group 400, and further, the pouch cells 402 included in the pouch cell group 400 can be connected to the first group of connection terminals 202 by means of series connection and parallel connection, thereby realizing assembly and replacement of the pouch cells 402. In the present application, the electrical connection plate 200 is fixed and supported by the holder 100, and the pouch cell group 400 is connected by the first connection terminal group 202 of the electrical connection plate 200, so that each pouch cell 402 included in the pouch cell group 400 can be connected in series or in parallel. In order to accommodate the use of high-power equipment, the second connection terminal group 204 of the electrical connection plate 200 is provided corresponding to the first through-hole group 102 of the holder 100, and further, an electrical load or an external power source can be directly connected to the second connection terminal group 204 through the first through-hole group 102, thereby realizing an electrical connection between the electrical load or the external power source and the pouch cell group 400, thereby simplifying the process of replacing and assembling the pouch cells 402.

[0039] In one embodiment, the holder 100 is provided with a first positioning group, the electrical connection plate 200 is provided with a second positioning group, and the second positioning group and the first positioning group are provided corresponding to each other.

[0040] The first positioning group and the holder 100 may be an integrally molded structure, for example, the first positioning group may be composed of a plurality of bumps. The second positioning group and the electrical connection plate 200 may be an integrally molded structure, for example, the second positioning group may be composed of a plurality of grooves, the grooves of the electrical connection plate 200 receiving corresponding bumps on the holder 100 and positioning the electrical connection plate 200 on the holder 100.

[0041] Since the holder 100 is provided with a first positioning group and the electrical connection plate 200 is provided with a second positioning group, when assembling the electrical connection plate 200, it can be assembled by aligning the second positioning group on the electrical connection plate 200 with the first positioning group on the holder 100, thereby realizing the electrical connection plate 200 to be attached to the holder 100 according to a predetermined direction and preventing incorrect assembly of the electrical connection plate 200 from leading to incorrect connection between the pouch cell group 400 and the electrical connection plate 200.

[0042] For example, as shown in FIG. 2, the first positioning group includes a plurality of first positioning portions 106, and the second positioning group includes a plurality of second positioning portions 208, each of which is distributed along the first side edge of the electrical connection plate 200, and each of which corresponds one-to-one to each of the first positioning portions 106.

[0043] The first positioning portions 106 may be bump-like structures, and the second positioning portions 208 may be groove-like structures. The first positioning portions 106 may be distributed along the same side of the holder 100, and the first side of the electrical connection plate 200 may be the long side of the electrical connection plate 200. For example, the first positioning group includes two first positioning portions 106, one of which is located close to a first end of the same side of the holder 100, and another of which is located close to a second end of the same side of the holder 100; the second positioning group includes two second positioning portions 208, one of which is located close to a first end of the first side of the electrical connecting plate 200, and another of which is located close to a second end of the first side of the electrical connecting plate 200; and when assembling the electrical connecting plate 200, the two second positioning portions 208 on the electrical connecting plate 200 can be assembled by corresponding one-to-one to the two first positioning portions 106 on the holder 100, thereby enabling the electrical connecting plate 200 to be positioned and attached to the holder 100 according to a predetermined direction, and improving the convenience of assembling the electrical connecting plate 200 and the holder 100.

[0044] For example, as shown in Figures 2 and 3, the first positioning group further includes a plurality of third positioning portions 108, and the second positioning group further includes a plurality of fourth positioning portions 212, each of which is distributed along the second side edge of the electrical connection plate 200, and each of the fourth positioning portions 212 and each of the third positioning portions 108 are arranged in one-to-one correspondence.

[0045] The third positioning portion 108 may have a bump-like structure, and the fourth positioning portion 212 may have a groove-like structure. Illustratively, the size of the third positioning portion 108 may be larger or smaller than the size of the first positioning portion 106, and the size of the third positioning portion 108 may be larger or smaller than the size of the fourth positioning portion 212, and the fourth positioning portion 212 and the corresponding third positioning portion 108 are provided in a compatible manner.

[0046] The third positioning portions 108 are provided distributed along different sides of the holder 100, with the second side of the electrical connection plate 200 facing the first side, i.e., the second side of the electrical connection plate 200 being the other long side of the electrical connection plate 200. For example, the third positioning group includes two third positioning portions 108, with one third positioning portion 108 provided close to a first end of the other side of the holder 100 and another third positioning portion 108 provided close to a second end of the other side of the holder 100, and the fourth positioning group includes two fourth positioning portions 212, with one fourth positioning portion 212 provided close to a first end of the second side of the electrical connection plate 200 and another fourth positioning portion 212 provided close to a The fourth positioning portions 212 are provided close to the second end of the second side edge of the plate 200. Furthermore, when assembling the electrical connection plate 200, the two fourth positioning portions 212 on the electrical connection plate 200 can be assembled by matching them one-to-one with the two third positioning portions 108 on the holder 100, thereby enabling the electrical connection plate 200 to be positioned and attached to the holder 100 according to a specified direction, and further improving the accuracy of the positioning and assembly of the electrical connection plate 200 and the holder 100.

[0047] In one embodiment, as shown in FIGS. 2 and 4, the holder 100 is further provided with a first limiting group 112, which is configured to hold the electrical connection plate 200. Location Restrictions Used to:

[0048] The first limiting group 112 may include two limiting members, which are disposed opposite the holder 100, and the limiting members and the holder 100 may have an integrally molded structure. Illustratively, the limiting members may have a buckle-like structure, one limiting member may be used to fasten the third side edge of the electrical connection plate 200, and another limiting member may be used to fasten the fourth side edge of the electrical connection plate 200, thereby fixing and limiting the electrical connection plate 200 to the holder 100 and ensuring a secure assembly of the electrical connection plate 200. It should be noted that the third side edge and the fourth side edge of the electrical connection plate 200 face each other.

[0049] In one embodiment, as shown in FIGS. 2 and 4, the holder 100 is further provided with a guide member 114, the pouch cell group 400 includes a plurality of pouch cells 402, each of which is connected to a first connection terminal group 202, and the guide member 114 guides each of the pouch cells 402. Rotate It is used to induce people to do something.

[0050] The guide member 114 and the holder 100 may be an integrally molded structure. For example, the holder 100 may be provided with two guide members 114, with one guide member 114 provided adjacent to one limiting member and another guide member 114 provided adjacent to another limiting member.

[0051] 7 and 8, the pouch cell group 400 includes two pouch cells 402, and the positive and negative terminals of the two pouch cells 402 are connected to the first connection terminal group 202 (for example, by laser welding), thereby connecting the positive and negative terminals of the two pouch cells 402 to the first connection terminal group 202. Furthermore, by applying an external force to the pouch cell 402, the pouch cell 402 can rotate along the guide member 114, thereby realizing assembly by rotating the pouch cell 402.

[0052] In one example, as shown in FIGS. 1 and 2, the guide member 114 is provided with a guide surface 116, and the guide surface 116 is configured to guide each pouch cell 402. Rotate Induce them to do so.

[0053] For example, electrode connection pieces 404 are provided corresponding to the positive and negative ends of the pouch cell 402, and the positive and negative ends of the pouch cell 402 can be elastic metal pieces, for example, the positive and negative ends of the pouch cell 402 can be nickel pieces.

[0054] An extension plate 406 is provided on a first end surface of the pouch cell 402, and the corresponding positive electrode end electrode connection piece 404 and the corresponding negative electrode end electrode connection piece 404 of the pouch cell 402 are respectively provided on the extension plate 406, and the extension plate 406 is perpendicular to the first end surface, and a guide plate 407 is further provided on the first end surface of the pouch cell 402, and the guide plate 407 is perpendicular to the first end surface and the guide plate 407 is perpendicular to the extension plate 406, and for example, the guide plate 407 and the extension plate 406 are integrally molded structure. When the electrode connection pieces 404 of the corresponding positive and negative ends of the pouch cell 402 are connected to the first connection terminal group 202, the guide surface 116 of the guide member 114 is parallel to the guide plate 407 of the pouch cell 402, and the guide surface 116 of the guide member 114 approaches the guide plate 407. Furthermore, by applying an external force to the pouch cell 402, the pouch cell 402 can rotate along the guide surface 116 of the guide member 114, which enables the pouch cell 402 to be rotated and assembled, improving the convenience of assembling multiple pouch cell groups 400.

[0055] In one embodiment, as shown in Figures 6 and 7, the battery assembly structure further includes an outer casing 300, and the holder 100 is further provided with an attachment portion 302, the outer casing 300 is used to wrap the pouch cell group 400, and a first end of the outer casing 300 is provided to the attachment portion 302 of the holder 100.

[0056] The outer casing 300 may have a plastic appearance, but is not limited thereto, and may be, for example, a heat shrink sleeve. The mounting portion 302 may be an annular rib structure.

[0057] The outer casing 300 encases the pouch cell group 400, and the mounting portion 302 of the holder 100 is inserted into the first end of the outer casing 300, so that the first end of the exterior can cover and encase the mounting portion 302 of the holder 100, thereby further realizing packaging of the pouch cell group 400, strengthening protection for the pouch cell group 400, improving the reliability of the pouch cell group 400, and preventing safety hazards to the pouch cells 402 caused by scratches or punctures due to external forces.

[0058] In one embodiment, as shown in Figures 6 and 7, a battery module is provided that includes a pouch cell group 400 and a battery assembly structure described in any one of the above, and the pouch cell group 400 is connected to the battery assembly structure.

[0059] The pouch cell group 400 may include a plurality of pouch cells 402, for example, the pouch cell group 400 may include two pouch cells 402. The pouch cells 402 may be lithium cells.

[0060] For a detailed description of the pouch cell group 400 and the battery assembly structure, please refer to the detailed description of the pouch cell group 400 and the battery assembly structure in the above embodiment, and they will not be described again here.

[0061] In the above embodiment, a first group of through holes 102 is provided on the holder 100, an electrical connection plate 200 is provided on the holder 100, a first group of connection terminals 202 is provided on a first plate surface of the electrical connection plate 200, a second group of connection terminals 204 is provided on a second plate surface of the electrical connection plate 200, the first group of connection terminals 202 is connected to the second group of connection terminals 204, the second group of connection terminals 204 is provided corresponding to the first group of through holes 102, the first group of connection terminals 202 is used to connect the pouch cell group 400, and further, the pouch cells 402 included in the pouch cell group 400 can be connected to the first group of connection terminals 202 by means of series connection and parallel connection, thereby realizing assembly and replacement of the pouch cells 402. In the present application, the electrical connection plate 200 is fixed and supported by the holder 100, and the pouch cell group 400 is connected by the first connection terminal group 202 of the electrical connection plate 200, so that each pouch cell 402 included in the pouch cell group 400 can be connected in series or in parallel. In order to accommodate the use of high-power equipment, the second connection terminal group 204 of the electrical connection plate 200 is provided corresponding to the first through-hole group 102 of the holder 100, and further, an electrical load or an external power source can be directly connected to the second connection terminal group 204 through the first through-hole group 102, thereby realizing an electrical connection between the electrical load or the external power source and the pouch cell group 400, thereby simplifying the process of replacing and assembling the pouch cells 402.

[0062] In one embodiment, as shown in Figures 7 and 8, the pouch cell group 400 includes a plurality of pouch cells 402, an extension plate 406 is provided on a first end surface of the pouch cell 402, an electrode connection piece 404 is provided on the extension plate 406, and the electrode connection piece 404 of each pouch cell 402 is respectively connected to the first connection terminal group 202.

[0063] An electrode connection piece 404 is provided at each of the positive and negative ends of the pouch cell 402, and the electrode connection piece 404 may be an elastic metal piece.

[0064] An extension plate 406 is provided on the first end surface of the pouch cell 402, and the corresponding positive electrode end electrode connection piece 404 and the corresponding negative electrode end electrode connection piece 404 of the pouch cell 402 are respectively provided on the extension plate 406, and the extension plate 406 is perpendicular to the first end surface, so that the electrode connection piece 404 and the first end surface of the pouch cell 402 are spaced apart, and further, the electrode connection pieces 404 of the pouch cell 402 can be easily connected to the first connection terminal group 202 respectively, improving the convenience of assembling the pouch cell 402. By arranging the first connection terminal group 202 and the second connection terminal group 204 in series or parallel connection, each pouch cell 402 can be connected in series or parallel. In order to accommodate the use of high-power equipment, the second connection terminal group 204 of the electrical connection plate 200 is arranged corresponding to the first through-hole group 102 of the holder 100. Furthermore, an electrical load or an external power source can be directly connected to the second connection terminal group 204 through the first through-hole group 102, thereby realizing an electrical connection between the electrical load or external power source and the pouch cell group 400, thereby simplifying the process of replacing and assembling the pouch cells 402.

[0065] In one embodiment, as shown in FIGS. 5 and 7, the pouch cell group 400 further includes a spacer 500, which is provided between the first end surface of the pouch cell 402 and the electrode connection piece 404.

[0066] The spacer 500 may be EVA foam. The spacer 500 is used to insulate and separate the electrode connection piece 404 from the first end surface of the pouch cell 402. By providing the spacer 500 between the first end surface of the pouch cell 402 and the electrode connection piece 404, it is possible to prevent the electrode connection piece 404 from damaging the pouch cell 402, thereby further improving the reliability of the pouch cell 402 and providing stronger protection for the pouch cell 402.

[0067] For example, a guide plate 407 is further provided on the first end surface of the pouch cell 402, the guide plate 407 being perpendicular to the first end surface and perpendicular to the extension plate 406. When the electrode connection pieces 404 of the corresponding positive and negative ends of the pouch cell 402 are connected to the first connection terminal group 202, the guide surface 116 of the guide member 114 is parallel to the guide plate 407 of the pouch cell 402, and the guide surface 116 of the guide member 114 approaches the guide plate 407. Furthermore, by applying an external force to the pouch cell 402, the pouch cell 402 can rotate along the guide surface 116 of the guide member 114, which allows the pouch cell 402 to be rotated and assembled, thereby improving the convenience of assembling the plurality of pouch cell groups 400.

[0068] It should be noted that the battery module may further include components such as label components, and a particular battery module may include more components than those described in the above examples, or may combine certain components, or may have a different component arrangement.

[0069] Each technical feature of the above-mentioned embodiments can be combined arbitrarily, and for the sake of brevity, not all possible combinations of the technical features in the above-mentioned embodiments are described, but as long as there is no contradiction in the combinations of those technical features, they shall be deemed to be within the scope of protection of this specification.

[0070] The above examples only represent some embodiments of the present application, and although the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent claims of the invention. It should be noted that those skilled in the art can make some modifications and improvements without departing from the concept of the present application, which also fall within the scope of protection of the present application. Therefore, the scope of protection of the present application is based on the scope of the claims. [Explanation of symbols]

[0071] 100. Holder, 102. First through hole group, 106. First positioning portion, 108. Third positioning portion, 112. First limiting group, 114. Guide member, 116. Guide surface, 200. Electrical connection plate, 202. First connection terminal group, 204. Second connection terminal group, 208. Second positioning portion, 212. Fourth positioning portion, 300. Outer casing, 302. Mounting portion, 400. Pouch cell group, 402. Pouch cell, 404. Electrode connection piece, 406. Extension plate, Guide plate 407, 500. Spacer.

Claims

1. A battery assembly structure, a holder provided with a first group of through holes; an electrical connection plate, the electrical connection plate being provided on the holder, having a first plate surface and a second plate surface, a first connection terminal group being provided on the first plate surface, a second connection terminal group being provided on the second plate surface, the first connection terminal group being connected to the second connection terminal group, the second connection terminal group being provided corresponding to the first through-hole group, and the first connection terminal group being used to connect a pouch cell group; a first positioning group is provided on the holder, and a second positioning group is provided on the electrical connection plate; the second positioning group is provided corresponding to the first positioning group, the first positioning group includes a plurality of first positioning portions, the second positioning group includes a plurality of second positioning portions, and the second positioning portions are distributed along a first side edge of the electrical connection plate; the second positioning portions are provided in one-to-one correspondence with the first positioning portions, the first positioning group further includes a plurality of third positioning portions, the second positioning group further includes a plurality of fourth positioning portions, and the fourth positioning portions are distributed along a second side edge of the electrical connection plate; the fourth positioning portions are provided in one-to-one correspondence with the third positioning portions, the second side edge of the electrical connection plate faces the first side edge, the first side edge of the electrical connection plate is the long side edge, and the second side edge of the electrical connection plate is also the other long side edge; The battery assembly structure, wherein the size of the third positioning portion is larger or smaller than the size of the first positioning portion.

2. The holder is further provided with a first limiting group; The battery assembly structure according to claim 1 , wherein the first limiting group is used to restrict the position of the electrical connection plate.

3. a guide member is further provided on the holder, the pouch cell group includes a plurality of pouch cells, and each of the pouch cells is connected to the first connection terminal group; The battery assembly structure according to claim 1 , wherein the guide member is used to guide each of the pouch cells to rotate.

4. The battery assembly structure according to claim 3 , wherein the guide member is provided with a guide surface, and the guide surface is used to guide each of the pouch cells so as to rotate.

5. The battery assembly structure further includes an outer casing, and the holder further includes an attachment portion; The battery assembly structure according to claim 1 , wherein the outer casing is used to encase the pouch cell group, and a first end of the outer casing is provided at the mounting portion of the holder.

6. A battery module comprising: a pouch cell group; and the battery assembly structure according to any one of claims 1 to 5, wherein the pouch cell group is connected to the battery assembly structure.

7. the pouch cell group includes a plurality of pouch cells, an extension plate is provided on a first end surface of the pouch cell, an electrode connection piece is provided on the extension plate, and the electrode connection piece of each of the pouch cells is connected to a first connection terminal group; The battery module according to claim 6 , wherein the pouch cell group further includes a spacer, the spacer being provided between the first end surface of the pouch cell and the electrode connection piece.

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