Packaging assembly of battery cell module and battery pack

Abstract

The utility model discloses a packaging assembly of a battery cell module and a battery pack, the packaging assembly comprises a pressing plate assembly connected to the first side of the battery cell module, the pressing plate assembly comprises a flat plate layer, a connecting group and a functional part, the flat plate layer corresponds to the mutually spaced part breadth in the battery cell module, and the connecting group is connected with the functional part. The flat plate layer is provided with a first through notch and a second through notch in a first position and a second position in the thickness direction of the flat plate layer so as to provide an arrangement space for mutual connection of at least part of the high-voltage copper bars and at least part of the integrated busbars. According to the packaging assembly, on the premise that the weight of the battery pack is prevented from being greatly increased, the positioning precision and the fixing strength of the battery cell module are improved, and a reasonable space is provided for an electric connection area of the integrated busbar and the high-voltage copper bar for positioning and fixing by arranging the first notch and the second notch; according to the packaging assembly, the stability of the battery cell module can be improved from two dimensions of external connection and internal key wire harness connection of the battery cell module, and the reliability of a battery pack is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of electric vehicles, and in particular, relates to a packaging assembly of a battery cell module and a battery pack. Background Art

[0002] The power battery pack is an important component of new energy vehicles such as electric vehicles and hybrid vehicles, and the battery module is the core component of the power battery pack. At present, in the packaging process of the battery module, structural adhesive is usually used to fix the battery module on the water cooling plate. The side of the water cooling plate adjacent to the battery module is not a flat surface. The surface of the water cooling plate has a protruding water cooling groove, which is indirectly in contact with the battery module through the structural adhesive. The circulating water in the water cooling groove can cool the battery to maintain the normal working temperature of the battery.

[0003] In the related art, since the upper cover of the battery pack cannot conflict with the battery module, the fixing method of the battery module is limited, the battery module and the water-cooling plate are bonded by structural adhesive alone, and the bonding surface is not flat and the bonding strength will gradually decrease over time, which will cause the connection between the battery module and the water-cooling plate to be unstable. Under the influence of the loosening or displacement of the battery module, the connection of the integrated busbars, poles and high-voltage copper bars inside the battery module is unstable. When the battery pack is subjected to external impact or vibration, it is difficult for the battery pack to absorb and disperse the impact force due to the limitations of the battery module packaging method, which in turn affects the normal operation of the battery pack, and the safety and reliability of the battery pack are poor. Utility Model Content

[0004] The embodiments of the present application provide a packaging assembly of a battery cell module and a battery pack, which can position and fix various widths of the battery cell module and fully match the wiring method and wiring harness connection requirements of the battery cell module, thereby improving the reliability of the battery pack.

[0005] In a first aspect, an embodiment of the present application provides a packaging assembly of a battery cell module, the packaging assembly is used to package multiple battery cell modules in the battery cell module, the packaging assembly includes a pressure plate assembly connected to a first side of the battery cell module, the pressure plate assembly includes a flat layer, a connection group and a functional part, the flat layer can be stacked on the first side of the battery cell module and is limitedly connected to a thermal management device, the flat layer corresponds to the partial widths of the battery cell module spaced apart from each other, and the flat layer is provided with a first incision and a second incision respectively at a first position and a second position along its own thickness direction, so as to Arrangement space is provided for the mutual connection of at least part of the high-voltage copper busbar and at least part of the integrated busbar, the first position is set at the end of the flat layer, and the second position corresponds to a part of the gap in the battery cell module; the connection group is recessed along the first direction on the flat layer, and corresponds to the preset grid points in the flat layer to mark and fix the battery cell module, and the flat layer and the thermal management device are mutually limited by at least part of the connection group; the functional part is recessed along the first direction by the middle area of ​​the flat layer to provide wiring space for the high-voltage copper busbar.

[0006] According to a first aspect of an embodiment of the present application, the packaging assembly also includes a frame assembly, which has a plurality of limiting beams, and the plurality of limiting beams are located at least partially on the outer circumference of the battery cell module and are adjacent to a first side of the battery cell module connected to the integrated busbar, and the flat plate layer is connected to the thermal management device by the limiting beams.

[0007] According to a first aspect of an embodiment of the present application, the frame assembly further includes a cross beam and a longitudinal beam, the cross beam being constructed to be consistent with the extension direction of the limiting beam, the longitudinal beam corresponding to the functional part, the cross beam and the longitudinal beam respectively extending crosswise along the second direction and the third direction, and embedded in the gap of the battery cell module, the longitudinal beam, the cross beam and the limiting beam cooperate with each other to limit the spatial freedom of the battery cell module.

[0008] According to the first aspect of the embodiment of the present application, the flat plate layer includes a first pressure plate and a second pressure plate spaced along the second direction, and the second pressure plate corresponds to the middle part of the battery cell module; the first pressure plate and the second pressure plate are both provided with the connection group, and the second pressure plate includes the functional part and the first support plate and the second support plate located on both sides of the functional part.

[0009] According to a first aspect of the embodiment of the present application, the number of the first pressing plates is two, and the two first pressing plates are arranged on both sides of the second pressing plate along the second direction.

[0010] According to a first aspect of the embodiment of the present application, the connection group includes a first stamping portion, and the first pressing plate, the first supporting plate and the second supporting plate are all constructed so that at least one end along the third direction is provided with the first stamping portion.

[0011] According to a first aspect of the embodiment of the present application, the connection group further includes a second stamping portion, and at least one of the first pressing plate, the first supporting plate and the second supporting plate is provided with the second stamping portion in the middle portion thereof along the third direction.

[0012] According to a first aspect of the embodiment of the present application, both the first stamping portion and the second stamping portion are provided with connecting holes, and are detachably connected to the limiting beam and the cross beam through the connecting holes, respectively.

[0013] According to a first aspect of an embodiment of the present application, the first incision and the second incision are both arranged on at least one of the first pressure plate, the first support plate and the second support plate, and there is a corresponding protective member, the protective member is provided with an opening along its circumference, and is formed with a chamber connected to the outside through the opening, and the chamber can provide a overlapping space for the high-voltage copper busbar and the integrated busbar at the first position or the second position.

[0014] According to a first aspect of the embodiment of the present application, the first incision is provided in the first support plate and is adjacent to the first stamping portion in the second pressing plate, and the second incision is provided in the middle of the second support plate and is adjacent to the functional portion.

[0015] According to a first aspect of an embodiment of the present application, the protective member includes an end plate and a protective cover, the end plate is connected to the limiting beam, the first stamping portion adjacent to the first incision, and one of the cross beams, the protective cover is constructed so that it can be mutually limitedly connected with the end plate and enclose the chamber, and the opening is provided in at least one of the end plate and the protective cover to provide an insertion channel for a portion of the electrical connection section of the integrated busbar.

[0016] According to a first aspect of an embodiment of the present application, in the first position, the end plate is limitedly connected to the limiting beam or the first stamping portion adjacent to the first incision, and the opening can be inserted with a portion of the high-voltage copper busbar connected to the battery on-off unit; in the second position, the end plate is limitedly connected to the cross beam, and the opening can be inserted with another portion of the high-voltage copper busbar, wherein the other portion of the high-voltage copper busbar is used to connect the integrated busbars in two adjacent battery cell modules.

[0017] In the second aspect, an embodiment of the present application provides a battery pack, which includes a battery cell module, an upper cover, a structural adhesive layer and a thermal management device, wherein the battery cell module is positioned and fixed using the packaging assembly described in any of the preceding items, and the battery cell module is used to provide electrical energy to an electrical device; the upper cover is covered on a first side of the battery cell module, and the inner peripheral surface of the cavity of the upper cover is arranged at a preset gap interval from the first side of the battery cell module; the structural adhesive layer is bonded to the second side of the battery cell module in a continuous layered form; and the thermal management device is limitedly connected to the second side of the battery cell module through the structural adhesive layer.

[0018] The packaging assembly and battery pack of the battery cell module provided in the embodiments of the present application, wherein the packaging assembly is arranged at intervals with a portion of the width of the first side of the battery cell module through a flat plate layer, and the flat plate layer is provided with a stamping group at a preset point, and can be indirectly fixed to the thermal management device through the stamping group, thereby forming a grid-like rigid connection between some points of the battery cell module and the thermal management device. The packaging assembly improves the positioning accuracy and fixing strength of the battery cell module without significantly increasing the weight of the battery pack; and the present application can provide a reasonable wiring space for some high-voltage copper busbars by setting a functional part, and also provides a reasonable space for positioning and fixing the electrical connection area of ​​the integrated busbar and the high-voltage copper busbar by setting a first incision and a second incision. The packaging assembly provided by the present application can improve the stability of the battery cell module from two dimensions, namely, the external connection of the battery cell module and the internal key wiring harness connection, to ensure the reliability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the assembly of the battery cell module and the packaging assembly provided in the embodiment of the present application;

[0021] Figure 2 is a schematic structural diagram of a packaging assembly provided in an embodiment of the present application;

[0022] Figure 3 It is a schematic diagram of the structure of the framework assembly provided in the embodiment of the present application;

[0023] Figure 4 is a schematic structural diagram of a first pressing plate provided in an embodiment of the present application;

[0024] Figure 5 is a top view of the first pressing plate provided in an embodiment of the present application;

[0025] Figure 6 is a detailed schematic diagram of the first stamping portion in the first pressing plate provided in an embodiment of the present application;

[0026] Figure 7is a detailed schematic diagram of the second stamping portion in the first pressing plate provided in an embodiment of the present application;

[0027] Figure 8 is a schematic structural diagram of a second pressing plate provided in an embodiment of the present application;

[0028] Fig. 9 is a front view of a second pressing plate provided in an embodiment of the present application;

[0029] Fig.10 is a top view of the second pressing plate provided in an embodiment of the present application;

[0030] Fig.11 is a detailed schematic diagram of one end of the second pressing plate provided in an embodiment of the present application;

[0031] Fig.12 is a schematic diagram of structural details at the first incision provided in an embodiment of the present application;

[0032] Fig.13 It is a schematic diagram of the structural details of the second incision provided in an embodiment of the present application.

[0033] In the drawings, the drawings are not necessarily drawn to scale.

[0034] Reference numerals: cell module 1; pressure plate assembly 2; flat plate layer 21; first pressure plate 211; second pressure plate 212; first support plate 2121; second support plate 2122; connection group 22; first stamping part 221; second stamping part 222; functional part 23; high-voltage copper bus 3; integrated busbar 4; frame assembly 5; limiting beam 51; cross beam 52; longitudinal beam 53; protective member 6; end plate 61; protective cover 62; first incision A;

[0035] Second incision B; connecting hole C; opening D; first direction X1; second direction X2; third direction X3. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0038] This application is based on the inventor's discovery and understanding of the following facts and problems:

[0039] In the cell module packaging process of the new energy vehicle battery pack, structural adhesive is usually used to fix the cell module on the water cooling plate to adjust the temperature of the cell module, so as to maintain the normal working temperature of the cell module. The cell module is also covered with an upper cover, but a certain gap must be left between the upper cover of the battery pack and the cell module to prevent the upper cover from being damaged under the load due to the contact and fit between the deformed position and the cell module when it is subjected to impact load and undergoes local deformation.

[0040] In the related art, since the upper cover of the battery pack cannot contact the battery cell module, the upper cover cannot directly provide pressure to the battery cell module to fix the battery cell module, and the fixing method of the battery cell module is limited. The battery cell module and the water-cooling plate are bonded solely by structural adhesive. As the structural adhesive ages, the bonding strength will gradually decrease over time, which will lead to an unstable connection between the battery cell module and the water-cooling plate. Under the influence of loosening or displacement of the battery cell module, the connection of each integrated busbar, pole and high-voltage copper busbar inside the battery cell module is unstable. When the battery pack is subjected to external impact or vibration, the battery cell module is prone to loosening or displacement, and the battery pack is difficult to absorb and disperse the impact force, and the safety and reliability of the battery pack are poor.

[0041] In order to solve the above problems, the present application embodiment provides a packaging assembly of a battery cell module and a battery pack. Figure 1-Figure 13 The packaging assembly of the battery cell module and the battery pack of the embodiment of the present application are described in detail.

[0042] like Figure 1 As shown, the embodiment of the present application provides a packaging assembly of a battery cell module, and the packaging assembly is used to package multiple battery cell modules 1 in the battery cell module. Please refer to Figure 1 and Figure 2The packaging assembly includes a pressure plate assembly 2 connected to the first side of the battery cell module, the pressure plate assembly 2 includes a flat layer 21, a connection group 22 and a functional part 23, the connection group 22 is formed on the width corresponding to the flat layer 21, and the connection group 22 can rigidly connect the flat layer 21 with the thermal management device at the bottom of the battery cell module. It can be understood that the thermal management device can be set as needed to adjust the temperature of the battery cell module, and the thermal management device can be set as a liquid cooling plate or a heating device.

[0043] Specifically, the flat layer 21 can be stacked on the first side of the battery module and connected to the thermal management device. The flat layer 21 corresponds to the spaced-apart portions of the battery module. It can be understood that the flat layer 21 can provide uniform pressure to the battery module to maintain the relative fixation between the battery module and the thermal management device. In addition, in order to control the influence of the flat layer 21 on the weight of the battery pack as much as possible, the flat layer 21 does not have to be set to correspond to the entire width of the battery module. However, in order to improve the effect of the flat layer 21 applying a load to the battery module, the flat layer 21 can also be set to correspond to the entire width of the battery module. Please refer to Figure 8 The flat plate layer 21 is provided with a first cutout A and a second cutout B at a first position and a second position along its thickness direction, respectively, to provide arrangement space for interconnection of at least part of the high-voltage copper busbar 3 and at least part of the integrated busbar 4. Please refer to Figure 2 and Figure 7 The first position is set at the end of the flat layer 21, and the second position corresponds to a partial gap in the battery module.

[0044] Please refer to Figure 2 The connection group 22 is recessed in the flat layer 21 along the first direction X1, and corresponds to the preset grid points in the flat layer 21 to mark and fix the position of the battery cell module. The flat layer 21 and the thermal management device are mutually limited by at least part of the connection group 22; the functional part 23 is recessed in the middle area of ​​the flat layer 21 along the first direction X1 to provide wiring space for the high-voltage copper bus 3. The functional part 23 can also provide arrangement space for other wiring harnesses in the battery cell module.

[0045] In some embodiments, please refer to Figure 1 and Figure 3 The packaging assembly also includes a frame component 5, which has a plurality of limiting beams 51. The plurality of limiting beams 51 are located on at least a portion of the outer peripheral surface of the battery cell module. The limiting beams 51 are adjacent to the first side of the battery cell module 1 connected to the integrated busbar 4, and the flat plate layer 21 is connected to the thermal management device through the limiting beams 51.

[0046] Understandably, please refer to Figure 1The battery module includes four battery modules 1, each battery module 1 includes a plurality of battery cells arranged in parallel along the third direction X3, and each battery cell is provided with poles on both sides along the second direction X2, so that each battery module 1 can be fed as a whole. Figure 1 As shown, each battery cell module 1 is provided with a strip-shaped integrated busbar 4 on both sides along the second direction X2, and the entire battery cell module is provided with an integrated busbar 4 on both sides along the second direction X2. There are no battery cell poles or integrated busbars 4 on both sides of the battery cell module along the third direction X3.

[0047] The limiting beam 51 is fixed to the thermal management device at the bottom of the battery cell module. In order to fix the battery cell module, the limiting beam 51 can be set on the opposite sides of the battery cell module along the third direction X3 to avoid interference between the limiting beam 51 and the integrated busbar 4. After the limiting beam 51 clamps the battery cell module along the third direction X3, the flat layer 21 can be relatively connected to the thermal management device through the limiting beam 51.

[0048] In some embodiments, please refer to Figure 3 The frame assembly 5 further includes a crossbeam 52 and a longitudinal beam 53. The crossbeam 52 is constructed to be consistent with the extension direction of the limiting beam 51. The longitudinal beam 53 corresponds to the functional part 23. The crossbeam 52 and the longitudinal beam 53 extend crosswise along the second direction X2 and the third direction X3, respectively, and are embedded in the gap of the battery module. The longitudinal beam 53, the crossbeam 52 and the limiting beam 51 cooperate with each other to limit the spatial freedom of the battery module 1. It can be understood that since the battery module is arranged in a grid-like manner by a plurality of battery modules 1, there are gaps between adjacent battery modules 1 to avoid each other. The crossbeam 52 can be arranged corresponding to the gap. The longitudinal beam 53 and the crossbeam 52 can constitute an inner frame supporting the battery module. The longitudinal beam 53 can be arranged at the bottom of the functional part 23 to support the wiring harness arranged in the functional part 23.

[0049] In some embodiments, please refer to Figure 2 The flat plate layer 21 includes a first pressing plate 211 and a second pressing plate 212 spaced apart along the second direction X2, and the second pressing plate 212 corresponds to the middle of the battery cell module; the first pressing plate 211 and the second pressing plate 212 are both provided with a connection group 22, and the second pressing plate 212 includes a functional part 23 and a first support plate 2121 and a second support plate 2122 located on both sides of the functional part 23. The number of the first pressing plates 211 is two, and the two first pressing plates 211 are arranged on both sides of the second pressing plate 212 along the second direction X2.

[0050] It can be understood that in order to avoid excessive increase in the weight of the battery pack due to the setting of the pressure plate assembly, a first strip-shaped pressure plate 211 can be set on both sides of the battery module along the second direction X2, and a second pressure plate 212 is placed in the middle area of ​​the battery module along the second direction X2, wherein the first pressure plate 211 and the second pressure plate 212 are arranged at a preset interval, and the first support plate 2121 and the second support plate 2122 in the second pressure plate 212 can be respectively arranged on both sides of the functional part 23 to ensure that the pressure plate assembly 2 can provide the battery module with a uniformly distributed load along the first direction X1 as evenly as possible, thereby improving the fixing strength between the battery module and the thermal management device at its bottom.

[0051] In some embodiments, please refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 The connection group 22 includes a first stamping portion 221, and the first pressing plate 211, the first supporting plate 2121 and the second supporting plate 2122 are all constructed so that at least one end along the third direction X3 is provided with the first stamping portion 221.

[0052] It can be understood that the flat layer 21 in the pressure plate assembly 2 is stacked on the top surface of the battery cell module, and the flat layer 21 can be provided with a first stamping portion 221 at its end extending along the third direction X3. The first stamping portion 221 is formed by a downward depression of at least one of the first pressure plate 211, the first support plate 2121 and the second support plate 2122 connected thereto. The first stamping portion 221 can be correspondingly connected to the limiting beam 51, thereby indirectly limiting the connection of the pressure plate assembly 2 to the thermal management device.

[0053] In one example, the thermal management device may be a liquid cooling plate, and the liquid cooling plate and the battery cell module are connected and fixed by structural adhesive.

[0054] In another example, the thermal management device may be a heating device, which may be connected to the battery cell module via structural adhesive.

[0055] In some embodiments, please refer to Figure 2 , Figure 4 , Figure 5 and Figure 7 The connection group 22 further includes a second stamping portion 222 , and at least one of the first pressing plate 211 , the first supporting plate 2121 , and the second supporting plate 2122 is provided with a second stamping portion 222 in the middle thereof along the third direction X3 .

[0056] It can be understood that, on the basis of the first stamping portion 221 cooperating with the limiting beam 51 to limit and fix the circumference of the battery cell module, in order to grid the battery cell module and further improve the positioning accuracy and fixing strength of the battery cell module, a second stamping portion 222 can be provided on at least one of the first pressure plate 211, the first support plate 2121 and the second support plate 2122, and the second stamping portion 222 is recessed in the width corresponding to the flat layer 21 along the third direction X3.

[0057] Based on this, the second stamping portion 222 corresponds to and is limitedly connected to the crossbeam 52 set in the gap between each battery cell module 1 along the third direction X3. The second stamping portion 222 can form an indirect rigid connection between the middle part of the battery cell module and the thermal management device, thereby improving the strength of the connection between the battery cell module and the thermal management device and avoiding displacement of the battery cell module under normal use.

[0058] In an example, see Figure 6 The first stamping part 221 and the second stamping part 222 are both provided with a connecting hole C, and are detachably connected to the limiting beam 51 and the cross beam 52 through the connecting holes C, respectively.

[0059] It is understandable that the first stamping portion 221 and the limiting beam 51 can be connected by riveting, and the second stamping portion 222 and the cross beam 52 can also be connected by riveting. Based on this, the position and number of the connecting holes C can be designed according to the actual layout of the riveting connection.

[0060] In some embodiments, Figure 8 As shown, the first incision A and the second incision B are both arranged on at least one of the first pressure plate 211, the first support plate 2121 and the second support plate 2122, and a corresponding protective member 6 is provided. The protective member 6 is provided with an opening D along its circumference, and is formed with a chamber connected to the outside through the opening D. The chamber can provide a lap space for the high-voltage copper busbar 3 and the integrated busbar 4 at the first position or the second position.

[0061] It is understandable that during the actual assembly process of the battery cell module, the operator can connect the high-voltage copper bus 3 with the corresponding integrated busbar 4 based on actual needs. Specifically, the electrical connection sections of the high-voltage copper bus 3 and the integrated busbar 4 can overlap each other.

[0062] Based on this, in order to fully consider the wiring method and wiring harness connection requirements in the battery cell module, space can be reserved at the overlapping position of the high-voltage copper busbar 3 and the integrated busbar 4 and a corresponding protective member 6 can be provided. The high-voltage copper busbar 3 and the integrated busbar 4 can be passed through the opening D and overlapped in the cavity. By providing the protective member 6, the high-voltage copper busbar 3 can be prevented from being exposed in the precise battery pack box structure.

[0063] In some embodiments, please refer to Figure 8 , Fig. 9 and Fig.10 The first cutout A is provided in the first support plate 2121 and is adjacent to the first punching portion 221 in the second pressing plate 212 , and the second cutout B is provided in the middle of the second support plate 2122 and is adjacent to the functional portion 23 .

[0064] Understandably, please refer to Figure 1 The battery cell module includes a plurality of battery cell modules 1, each battery cell module 1 includes a plurality of battery cells arranged in parallel, and each battery cell is provided with an integrated bus bar 4 on both sides along the second direction X2, so as to ensure that the battery cell module 1 can be fed as a whole. At the same time, the battery cell modules 1 are connected by shorter copper bars (not shown in the figure), so that the entire battery cell module is fed as a whole.

[0065] In the embodiment of the present application, on the one hand, the battery cell module can lead a high-voltage copper busbar 3 from the integrated busbar 4 to connect with the battery on-off unit, and the high-voltage copper busbar 3 connected to the battery on-off unit can be overlapped with the corresponding integrated busbar 4, and the first incision A can be opened in the overlap area. On the other hand, each battery cell module 1 is overlapped and connected with the corresponding short copper busbar through the integrated busbar 4 set on its side. Since part of the short copper busbar can be set adjacent to the functional part 23 when two adjacent battery cell modules 1 are connected, in order to provide a corresponding overlap space, the embodiment of the present application opens a second incision B at the corresponding position.

[0066] In some embodiments, please refer to Fig.11 , Fig.12 and Fig.13 The protective member 6 includes an end plate 61 and a protective cover 62. The end plate 61 is connected to the limiting beam 51, the first stamping portion 221 adjacent to the first incision A, and one of the cross beams 52. The protective cover 62 is constructed so that it can be mutually limitedly connected with the end plate 61, and the protective cover 62 and the end plate 61 can enclose a chamber. The opening D is provided in at least one of the end plate 61 and the protective cover 62 to provide an insertion channel for the electrical connection section of the partially integrated busbar 4.

[0067] It can be understood that, at the first incision A, the end plate 61 in the protective member 6 can be directly fixed on the first stamping portion 221 adjacent thereto, and the end plate 61 can also be fixed on the corresponding limiting beam 51, and the protective cover 62 is limitedly installed on the end plate 61, and the chamber enclosed by the protective cover 62 and the end plate 61 can accommodate the overlapping section between the high-voltage copper bus 3 and the integrated busbar 4.

[0068] In one example, the protection cover 62 may be threadedly connected to the end plate 61 .

[0069] In another example, the protection cover 62 may be snap-connected to the end plate 61 .

[0070] In some embodiments, in the first position, the end plate 61 is limitedly connected to the limiting beam 51 or the first stamping portion 221 adjacent to the first incision A, and the opening D can be inserted with a portion of the high-voltage copper busbar 3 connected to the battery switching unit; in the second position, the end plate 61 is limitedly connected to the crossbeam 52, and the opening D can be inserted with another portion of the high-voltage copper busbar 3, wherein the other portion of the high-voltage copper busbar 3 is used to connect the integrated busbar 4 in two adjacent battery cell modules 1; wherein the first position is the position where the first incision A is located, and the second position is the position corresponding to the second incision B.

[0071] It can be understood that the high-voltage copper bar 3 may include a first copper bar and a second copper bar, the first copper bar is a part of the aforementioned high-voltage copper bar 3, and the second copper bar is the aforementioned short copper bar or another part of the high-voltage copper bar 3. The embodiment of the present application provides corresponding first incisions A and second incisions B for the connection and wiring requirements between the first copper bar and the second copper bar and the integrated busbar 4, respectively.

[0072] It should be emphasized that the sizes of the opening positions of the first incision A and the second incision B can be set according to the requirements of the actual battery cell module and are not limited to the positions shown in the drawings of the present application specification.

[0073] In some embodiments, the present application also provides a battery pack, which includes a battery cell module, an upper cover, a structural adhesive layer and a thermal management device. The battery cell module is positioned and fixed using any of the aforementioned packaging assemblies, and the battery cell module is used to provide electrical energy to an electrical device; the upper cover is covered on a first side of the battery cell module, and the inner peripheral surface of the cavity of the upper cover is arranged at a preset gap interval from the first side of the battery cell module; the structural adhesive layer is bonded to the second side of the battery cell module in a continuous layered form; and the thermal management device is limitedly connected to the second side of the battery cell module through the structural adhesive layer.

[0074] It is understandable that the battery cell module in the battery pack is provided with the aforementioned packaging assembly, the top of the battery cell module is provided with an upper cover, and the bottom of the battery cell module is bonded to the thermal management device through a structural adhesive layer. Under the premise of avoiding a significant increase in the weight of the battery pack, the positioning accuracy and fixing strength of the battery cell module in the battery pack can be effectively enhanced. The packaging assembly can improve the stability of the battery cell module from two dimensions, namely the external connection of the battery cell module and the internal key wiring harness connection, to ensure the reliability of the battery pack.

[0075] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0076] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0078] The term "plurality" used in the present application refers to more than two, including two.

[0079] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A packaging assembly of a battery cell module, used for packaging a plurality of battery cell modules (1) in the battery cell module, characterized in that: The packaging assembly comprises a pressure plate assembly (2) connected to the first side of the battery cell module, and the pressure plate assembly (2) comprises: A flat plate layer (21) can be stacked on a first side of the battery module and is limitedly connected to the thermal management device, the flat plate layer (21) corresponds to a portion of the width of the battery module that is spaced apart from each other, and the flat plate layer (21) is provided with a first cutout (A) and a second cutout (B) penetrating the flat plate layer (21) at a first position and a second position respectively along its thickness direction, so as to provide an arrangement space for interconnecting at least a portion of the high-voltage copper busbar (3) and at least a portion of the integrated busbar (4), the first position being provided at an end of the flat plate layer (21), and the second position corresponding to a portion of the gap in the battery module; A connection group (22) is formed concavely on the flat layer (21) along a first direction and corresponds to a preset grid point in the flat layer (21) so as to mark and fix the position of the battery core module, and the flat layer (21) and the thermal management device are mutually limited by at least a part of the connection group (22); and The functional portion (23) is formed by being recessed in the middle area of ​​the flat plate layer (21) along the first direction to provide wiring space for the high-voltage copper busbar (3).

2. The packaging assembly of the battery module according to claim 1, characterized in that: The invention also comprises a frame assembly (5), wherein the frame assembly (5) has a plurality of limiting beams (51), wherein the plurality of limiting beams (51) are located on at least a portion of the outer peripheral surface of the battery cell module and are adjacent to a first side of the battery cell module (1) connected to the integrated busbar (4), and the flat plate layer (21) is connected to the thermal management device in a limiting manner via the limiting beams (51).

3. The packaging assembly of the battery module according to claim 2, characterized in that: The frame assembly (5) further comprises: A cross beam (52) configured to extend in the same direction as the limiting beam (51); and The longitudinal beam (53) corresponds to the functional part (23); the transverse beam (52) and the longitudinal beam (53) extend crosswise along the second direction and the third direction respectively, and are embedded in the gap of the battery module; the longitudinal beam (53), the transverse beam (52) and the limiting beam (51) cooperate with each other to limit the spatial freedom of the battery module (1).

4. The packaging assembly of the battery module according to claim 3, characterized in that: The flat plate layer (21) comprises a first pressing plate (211) and a second pressing plate (212) spaced apart along the second direction, and the second pressing plate (212) corresponds to the middle part of the battery core module; The first pressing plate (211) and the second pressing plate (212) are both provided with the connection group (22); the second pressing plate (212) comprises the functional portion (23) and a first supporting plate (2121) and a second supporting plate (2122) located on both sides of the functional portion (23).

5. The packaging assembly of the battery module according to claim 4, characterized in that: The number of the first pressing plates (211) is two, and the two first pressing plates (211) are arranged on both sides of the second pressing plate (212) along the second direction; and / or, The connection group (22) comprises a first stamping portion (221), and the first pressing plate (211), the first supporting plate (2121) and the second supporting plate (2122) are all constructed so that at least one end thereof along a third direction is provided with the first stamping portion (221).

6. The packaging assembly of the battery module according to claim 5, characterized in that: The connection group (22) further comprises a second stamping portion (222), and at least one of the first pressing plate (211), the first supporting plate (2121) and the second supporting plate (2122) is provided with the second stamping portion (222) in the middle thereof along the third direction; and / or The first stamping part (221) and the second stamping part (222) are both provided with a connection hole (C), and are detachably connected to the limiting beam (51) and the cross beam (52) respectively through the connection hole (C).

7. The packaging assembly of the battery module according to claim 6, characterized in that: The first cutout (A) and the second cutout (B) are both provided on at least one of the first pressure plate (211), the first support plate (2121) and the second support plate (2122), and a protective member (6) is provided correspondingly thereto. The protective member (6) is provided with an opening (D) along its circumference, and is formed with a chamber connected to the outside through the opening (D). The chamber can provide a lap space for the high-voltage copper busbar (3) and the integrated busbar (4) at the first position or the second position.

8. The packaging assembly of the battery module according to claim 7, characterized in that: The first cutout (A) is provided on the first support plate (2121) and is adjacent to the first punching portion (221) in the second pressing plate (212); the second cutout (B) is provided in the middle of the second support plate (2122) and is adjacent to the functional portion (23); and / or, The protective element (6) comprises: an end plate (61) connected to the limiting beam (51), the first stamping portion (221) adjacent to the first cutout (A), and one of the crossbeam (52); and The protective cover (62) is constructed so that it can be mutually limitedly connected with the end plate (61) and enclose the chamber, and the opening (D) is provided in at least one of the end plate (61) and the protective cover (62) to provide an insertion channel for the electrical connection section of a part of the integrated busbar (4).

9. The packaging assembly of the battery module according to claim 8, characterized in that: In the first position, the end plate (61) is limitedly connected to the limit beam (51) or the first stamping portion (221) adjacent to the first incision (A), and the opening (D) can be inserted with a portion of the high-voltage copper busbar (3) connected to the battery on-off unit; in the second position, the end plate (61) is limitedly connected to the cross beam (52), and the opening (D) can be inserted with another portion of the high-voltage copper busbar (3), wherein the other portion of the high-voltage copper busbar (3) is used to connect the integrated busbars (4) in two adjacent battery cell modules (1).

10. A battery pack, characterized in that: include: A battery cell module, wherein the battery cell module is positioned and fixed by using the packaging assembly according to any one of claims 1 to 9, and the battery cell module is used to provide electric energy to an electric device; An upper cover, covering the first side of the battery cell module, wherein the inner peripheral surface of the cavity of the upper cover and the first side of the battery cell module are arranged at a preset gap; A structural adhesive layer is bonded to the second side of the battery module in a continuous layered form; and The thermal management device is connected to the second side limit of the battery module through the structural adhesive layer.

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