Battery pack

Abstract

The utility model provides a battery pack, which comprises a frame, a battery pack body and a battery pack cover, the mounting beams are arranged between two adjacent battery accommodating cavities; the plurality of battery modules are correspondingly arranged in the plurality of battery accommodating cavities, and the height of the mounting beam is lower than that of the battery modules; the mounting structure is provided with a bearing part and a connecting part which are distributed up and down, the bearing part is used for placing the electronic device, the connecting part is connected with the mounting beam, the bearing part is positioned above the battery modules, and at least part of the connecting part is positioned between two adjacent battery modules. According to the technical scheme provided by the utility model, the problems that the mounting structure is complicated and occupies a relatively large space in a battery pack in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and in particular to a battery pack. Background Art

[0002] With society's increasing emphasis on sustainable development and environmental protection, the use of lithium batteries not only reduces dependence on fossil fuels but also reduces greenhouse gas emissions. These advantages have led to their widespread application in various fields. However, the demand for high-capacity batteries severely limits the mounting requirements within power battery packs. Consequently, the installation of mounting brackets for the BMS (Battery Management System) within power battery packs has become a challenge. This is especially true when multiple BMSs are required within a power battery pack, making the placement and installation of each BMS even more challenging.

[0003] In the prior art, the BMS mounting bracket has a complex structure. When the arrangement inside the battery pack is very limited, the BMS is usually set on the side wall inside the battery pack, and the bracket is installed on the inner wall of the side wall. This will cause the horizontal size of the battery pack to increase, thereby resulting in a larger overall size of the battery pack and a decrease in the energy density of the battery pack. Utility Model Content

[0004] The utility model provides a battery pack to solve the problem in the prior art that the BMS installation structure is complex and occupies a large space in the battery pack.

[0005] The utility model provides a battery pack, which includes: a frame having multiple battery accommodating cavities; a mounting beam, which is arranged between two adjacent battery accommodating cavities; multiple battery modules, which are correspondingly arranged in the multiple battery accommodating cavities, and the height of the mounting beam is lower than the height of the battery modules; and a mounting structure, which has a bearing part and a connecting part distributed up and down, the bearing part is used to place electronic devices, and the connecting part is connected to the mounting beam, the bearing part is located above the battery module, and at least part of the connecting part is located between two adjacent battery modules.

[0006] Furthermore, the mounting beam includes cross-arranged transverse beams and longitudinal beams, and there are multiple transverse beams, which are spaced apart along the stacking direction of the battery cells in the battery module. The mounting structure extends along the extension direction of the transverse beams, and the connecting portion of the mounting structure is connected to the longitudinal beams.

[0007] Furthermore, the mounting beam includes a plurality of longitudinal beams, the plurality of longitudinal beams are spaced apart and distributed along the extension direction of the transverse beam, and the plurality of connecting portions are connected to the plurality of longitudinal beams in a one-to-one correspondence.

[0008] Furthermore, the connecting portion is formed with an accommodation space, and the accommodation space is used to place the wire harness.

[0009] Furthermore, the mounting structure is bent to form a concave portion and a convex portion that are arranged opposite to each other, the top of the convex portion forms the bearing portion, the bottom of the concave portion forms the connecting portion, and the hollow portion of the concave portion forms the accommodating space.

[0010] Furthermore, at least a portion of the bearing portion is provided with a reinforcement structure, and / or at least a portion of the connecting portion is provided with a reinforcement structure.

[0011] Furthermore, a pit is provided on the end surface of the bearing portion facing the electronic device, and an extension direction of the pit is the same as an extension direction of the mounting structure, and the pit forms a reinforcement structure.

[0012] Furthermore, a wire harness fixing portion is provided on the edge of the load-bearing portion, and the wire harness fixing portion is used to fix the wire harness.

[0013] Furthermore, the wire harness fixing portion has a connecting section and a supporting section arranged in sequence, one end of the connecting section is connected to the load-bearing portion, the extension direction of the connecting section and the extension direction of the supporting section have an angle, the supporting section is located above the load-bearing portion, and a wire harness is provided on the supporting section to fix the wire harness.

[0014] Furthermore, an insulating layer is provided on each crossbeam.

[0015] Furthermore, the battery module also includes a CCS component, which is located above the battery cell. The CCS component includes a tab and a flexible circuit board. Pole posts are provided at both ends of the battery module. The tab covers the pole post and is electrically connected to the pole post. The flexible circuit board is located in the middle of the battery module and is electrically connected to the tab. The battery pack also includes an insulating pad, which is located at both ends of the battery module and is laid above the tab.

[0016] Furthermore, an anti-error column is provided on the edge of the installation structure, and a through hole is correspondingly provided on the longitudinal beam. The anti-error column can be passed through the through hole, and the anti-error column and the through hole cooperate to form an anti-error structure.

[0017] By applying the technical solution of the present invention, the frame has multiple battery accommodating cavities, and multiple battery modules are correspondingly arranged in the multiple battery accommodating cavities. The mounting structure has a bearing portion and a connecting portion distributed up and down. The mounting structure is arranged on a mounting beam through the connecting portion, and the height of the mounting beam is lower than the height of the battery module, so that at least part of the connecting portion is located between two adjacent battery modules. In this way, the mounting structure will not occupy the horizontal space where the battery module is placed in the battery pack, and can also reduce the longitudinal space occupied by the mounting structure in the battery pack, thereby improving the space utilization inside the battery pack, and achieving the miniaturization of the battery pack while ensuring the energy density of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 Shows an assembly diagram of the mounting structure and frame provided by the utility model;

[0020] Figure 2 Shows a schematic structural diagram of part of the battery pack provided by the utility model;

[0021] Figure 3 Shows a structural schematic diagram of the installation structure provided by the utility model;

[0022] Figure 4 Shows a top view of the installation structure provided by the utility model;

[0023] Figure 5 Shows a side view of the installation structure provided by the utility model;

[0024] Figure 6 A partial structural diagram of a battery module provided by the present invention is shown;

[0025] Figure 7 A schematic diagram showing an insulating pad covered on a bar provided by the present invention is shown;

[0026] Figure 8 A partial structural diagram of the connecting bar provided by the present invention is shown;

[0027] Figure 9 The figure shows a schematic structural diagram of the battery pack provided by the present invention.

[0028] The above drawings include the following reference numerals:

[0029] 10. Installation structure;

[0030] 101. Accommodate space;

[0031] 11. bearing portion; 110. recess;

[0032] 111. Wire harness fixing portion;

[0033] 12. Connecting part;

[0034] 121. Reinforcement ribs; 122. Anti-misalignment columns;

[0035] 20. Battery pack box;

[0036] 21. Framework;

[0037] 210, battery accommodating cavity;

[0038] 211, installation beam; 212, cross beam; 213, longitudinal beam;

[0039] 30. Battery pack;

[0040] 31. Battery module;

[0041] 32. CCS assembly; 321. Piece; 322. Flexible circuit board;

[0042] 33. Battery cells;

[0043] 40. Insulation pad;

[0044] 50. Connecting row;

[0045] 60. Cable tie; 70. Foam;

[0046] 80. Box cover;

[0047] 100. Electronic devices. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a battery pack, which includes: a frame 21, a mounting beam 211, a plurality of battery modules 31 and a mounting structure 10. The frame 21 has a plurality of battery accommodating cavities 210. The mounting beam 211 is arranged between two adjacent battery accommodating cavities 210. The plurality of battery modules 31 are correspondingly arranged in the plurality of battery accommodating cavities 210, and the height of the mounting beam 211 is lower than the height of the battery module 31. The mounting structure 10 has a bearing portion 11 and a connecting portion 12 distributed up and down, the bearing portion 11 places the electronic device 100, and the connecting portion 12 is connected to the mounting beam 211. The bearing portion 11 is located above the battery module 31, and at least part of the connecting portion 12 is located between two adjacent battery modules 31.

[0050] Applying the technical solution of the present invention, the frame 21 has multiple battery accommodating cavities 210, and multiple battery modules 31 are correspondingly arranged in the multiple battery accommodating cavities 210. The mounting structure 10 has a load-bearing portion 11 and a connecting portion 12 distributed up and down. The mounting structure 10 is set on the mounting beam 211 through the connecting portion 12. The height of the mounting beam 211 is lower than the height of the battery module 31, so that at least part of the connecting portion 12 is located between two adjacent battery modules 31. In this way, the mounting structure 10 will not occupy the horizontal space where the battery module 31 is placed in the battery pack 30, and can also reduce the longitudinal space occupied by the mounting structure 10 in the battery pack 30, thereby improving the space utilization inside the battery pack 30, and achieving the miniaturization of the battery pack 30 while ensuring the energy density of the battery pack 30.

[0051] In the present application, the electronic device 100 is a BMS. In other embodiments, the electronic device 100 may also be other electrical components such as a BDU (Battery Drive Unit).

[0052] The battery pack 30 further includes a battery pack case 20, which is used to house the battery modules 31 and support the components within the battery pack 30. The battery pack case 20 is formed by a frame 21 and mounting beams 211.

[0053] like Figure 1 and Figure 2 As shown, the mounting beam 211 includes a cross-arranged cross beam 212 and a longitudinal beam 213. There are multiple cross beams 212, and the multiple cross beams 212 are spaced apart along the stacking direction of the battery cells 33 in the battery module 31. A battery module 31 is composed of multiple battery cells 33. Through the above arrangement, the cross beam 212 can resist the expansion force at the end of the battery module 31, thereby reducing the possibility of the expansion force of the battery cell 33 after damage causing squeezing of the adjacent battery cells 33. In this way, there is no need to set an end plate at the end of the battery module 31 to ensure the structural stability of the battery module 31. The multiple battery cells 33 can be directly assembled into the battery pack case 20, realizing a module-free design. In this way, the space utilization rate of the battery pack case 20 is improved, more battery modules 31 can be installed in the same volume, and the energy density of the battery pack case 20 is improved.

[0054] Specifically, the mounting structure 10 extends along the direction of the crossbeam 212, and the connecting portion 12 of the mounting structure 10 is connected to the longitudinal beam 213. This arrangement prevents interference between the mounting structure 10 and the battery module 31 or other components, improving the rationality of the mounting structure 10 layout. This design also reduces the lateral space occupied by the mounting structure 10 within the battery pack housing 20, thereby miniaturizing the battery pack housing 20.

[0055] like Figure 1 and Figure 2 As shown, the mounting beam 211 includes multiple longitudinal beams 213, which are spaced apart along the extension direction of the cross beam 212. The connecting portions 12 are connected to the longitudinal beams 213 in a one-to-one correspondence. This not only increases the contact area between the connecting portions 12 and the longitudinal beams 213, improving the stability of the mounting structure 10 in supporting the electronic device 100, but also allows the battery modules 31 to be placed between two adjacent connecting portions 12, further improving the rationality of the layout of the mounting structure 10.

[0056] like Figures 3 to 5 As shown, the connection portion 12 is formed with a receiving space 101 for placing the wiring harness. By providing the receiving space 101 between the connection portion 12 and the supporting portion 11 to place the wiring harness, it is possible to facilitate wiring and improve the space utilization of the mounting structure 10.

[0057] The mounting structure 10 is bent to form a concave portion and a convex portion facing each other. The top of the convex portion forms a load-bearing portion 11, the bottom of the concave portion forms a connecting portion 12, and the hollow portion of the concave portion forms a receiving space 101. This arrangement reduces the weight of the mounting structure 10, increases the proportion of the receiving space 101, and further optimizes the space utilization of the mounting structure 10.

[0058] The mounting structure comprises multiple supporting portions 11 and multiple connecting portions 12. The supporting portions 11 are spaced apart along the length of the electronic device 100, and the supporting portions 11 collectively support the electronic device 100. A connecting portion 12 is located between two adjacent supporting portions 11. This arrangement increases the contact area between the supporting portions 11 and the electronic device 100, and also increases the contact area between the connecting portion 12 and the battery pack case 20. This in turn enhances the mounting structure's ability to support the electronic device 100 and improves the stability of its connection to the battery pack case 20. In this application, the number of supporting portions 11 and connecting portions 12 is not limited; they can be selected based on the actual size and internal space of the battery pack.

[0059] In this embodiment, there are three supporting parts 11 and two connecting parts 12. This arrangement can not only ensure the bearing strength of the installation structure for the electronic device 100, but also meet the stability of the connection with the battery pack case 20, and at the same time will not occupy too much space inside the battery pack case 20.

[0060] Furthermore, the bearing portion 11 and the connecting portion 12 are stamped. Through the above arrangement, the overall strength of the mounting structure can be ensured, and the situation of poor structural strength of the connection caused by processing errors or low connection accuracy at the bend can be avoided, and the processing technology is simple.

[0061] In one embodiment of the present application, a reinforcement structure is provided on at least part of the bearing portion 11. Through the above-mentioned arrangement, the structural strength and load performance of the bearing portion 11 can be strengthened, thereby improving the strength of the connection between the bearing portion 11 and the electronic device 100, so that the bearing effect of the bearing portion 11 on the electronic device 100 is more stable. Specifically, a reinforcement structure can be provided on each bearing portion 11 to ensure the supporting effect on the electronic device 100. In this embodiment, a reinforcement structure is provided on the bearing portions 11 located at both ends, and the bearing portions 11 at both ends are cantilever structures. By providing a reinforcement structure on the bearing portions 11 at both ends, the processing technology can be simplified while ensuring the overall structural strength.

[0062] In another embodiment of the present application, a reinforcement structure is provided on at least a portion of the connection portion 12. This configuration can enhance the structural strength and load performance of the connection portion 12, thereby making the connection between the connection portion 12 and the battery pack case 20 more stable.

[0063] Furthermore, the edges of the load-bearing portion 11 and the connecting portion 12 are provided with relief notches for circumventing the wiring harness. A reinforcement structure is also provided on the edge of the connecting portion 12 where the relief notches are machined to enhance the structural strength of the edge. Specifically, a groove structure is machined on the portion of the connecting portion 12 corresponding to the relief notches.

[0064] In this embodiment, reinforcement structures are provided on both the load-bearing portion 11 and the connecting portion 12. This configuration improves the structural strength and load-bearing performance of the load-bearing portion 11 and the connecting portion 12, thereby enhancing the load-bearing effect of the load-bearing portion 11 on the electronic device 100 and improving the stability of the connection between the connecting portion 12 and the battery pack case 20. This greatly enhances the overall structural strength of the mounting structure and prevents deformation and damage to the mounting structure when the battery pack case 20 is subjected to external impact.

[0065] In this application, the specific form of the reinforcement structure is not limited, as long as it can improve the structural strength of the mounting structure 10. Optionally, a reinforcement structure or a rib structure can be formed at the bend of the bearing portion 11 and the connecting portion 12 to prevent deformation of the mounting structure 10, or the bearing portion 11 and the connecting portion 12 can be configured as a stacked structure to enhance the structural strength of the mounting structure 10.

[0066] Specifically, a recess 110 is punched in the middle of the end face of the supporting portion 11 facing the electronic device 100. The extension direction of the recess 110 is the same as the extension direction of the mounting structure 10, and the recess 110 forms a reinforcement structure. The provision of the recess 110 makes the height of the middle of the end face of the supporting portion 11 lower than the heights of the two ends of the end face of the supporting portion 11. This can strengthen the structural strength of the supporting portion 11, reduce the risk of deformation or breakage of the supporting portion 11 when supporting the electronic device 100, and improve the supporting effect of the supporting portion 11. Reinforcing ribs 121 are provided at the bend of the connecting portion 12 to strengthen the structural strength of the bend of the connecting portion 12, prevent deformation of the connecting portion 12, and thereby improve the connection strength between the connecting portion 12 and the battery pack case 20.

[0067] The edge of the load-bearing portion 11 is provided with a wire harness fixing portion 111 for fixing the wire harness. This arrangement allows the wire harnesses on the electronic device 100 and nearby wire harnesses to be stored and organized, preventing the wire harnesses from becoming cluttered and tangled within the battery pack case 20. This improves the rationalization of the wire harness distribution within the battery pack case 20 and increases the internal space utilization of the battery pack case 20.

[0068] Furthermore, the wire harness securing portion 111 comprises a connecting section and a supporting section arranged in sequence. One end of the connecting section is connected to the load-bearing portion 11, and the connecting section extends in an angle with the supporting section. The supporting section is located above the load-bearing portion 11 and is provided with a wiring harness to secure the wire harness. This arrangement allows the supporting section to organize and secure the wire harness within the battery pack case 20, preventing interference with the electronic device 100 and further improving the rationality of wiring within the battery pack case 20.

[0069] In this embodiment, the cable tie is a cable tie. In other embodiments, the cable tie can also be configured as a buckle or other structure.

[0070] In this application, the harness fixing portion 111 can be provided as a single or multiple portions. In this embodiment, multiple harness fixing portions 111 are provided, one of which is provided on the load-bearing portion 11 and another on the connecting portion 12. The connecting section of the harness fixing portion 111 provided on the connecting portion 12 is connected to the connecting portion 12, and the supporting section is located above the connecting portion 12. This allows the harness to be fixed at different heights, avoiding the need for a centralized arrangement of the harnesses, which would take up too much space and easily become tangled.

[0071] Specifically, an insulating layer is provided on each crossbeam 212. This arrangement enhances the insulation performance of the crossbeam 212, thereby preventing leakage of the battery modules 31 or short circuits between adjacent battery modules 31. This improves insulation protection between the battery modules 31 and enhances the safety of the components within the battery pack housing 20.

[0072] In this embodiment, the insulation layer on the crossbeam 212 in the middle of the battery pack case 20 is made of ceramic silicone rubber insulation cloth. The insulation layer on the crossbeams 212 at both ends of the battery pack case 20 is made of PC film (polycarbonate film). Compared with PC film, ceramic silicone rubber material has better insulation performance, fire resistance, and flame retardancy. Battery modules 31 are placed on both sides of the crossbeam 212 in the middle of the battery pack case 20, so the insulation layer on the crossbeam 212 is made of ceramic silicone rubber insulation cloth to ensure the insulation performance of the crossbeam 212.

[0073] like Figures 3 to 5 As shown, an error-proofing structure is further provided between the mounting structure 10 and the longitudinal beam 213. This prevents the mounting structure 10 from being installed in the wrong position or direction on the longitudinal beam 213 when the connecting portion 12 and the longitudinal beam 213 are assembled, thereby improving the installation accuracy and efficiency of the mounting structure 10 and the longitudinal beam 213.

[0074] In the present application, there is no limitation on the specific form and setting position of the anti-error structure. Key slots can be processed, and keys can be processed on the longitudinal beam 213 to cooperate with each other. It can also be snap-fitted with the longitudinal beam 213 through structures such as snaps or screws.

[0075] In this embodiment, an anti-error column 122 is provided on the side of the bottom of the connecting portion 12 away from the wire harness fixing portion 111, and a corresponding through hole is provided on the longitudinal beam 213. The anti-error column 122 cooperates with the through hole to form an anti-error structure. Such a structure is simple and easy to process.

[0076] In another embodiment of the present application, the error-proofing column 122 may also be provided at the edge of the bearing portion 11 .

[0077] like Figure 6 As shown, the battery module 31 is provided with poles at both ends, and tabs 321 cover the poles and are electrically connected to the poles. The battery module 31 also includes a CCS assembly 32, which is located above the battery cells 33. The CCS assembly 32 includes tabs 321 and flexible circuit boards 322, thereby achieving electrical connection between adjacent battery cells 33 in the battery module 31. The flexible circuit board 322 is located in the middle of the battery module 31 and is electrically connected to the tabs 321. In this way, the flexible circuit board 322 can be electrically connected to the tabs 321 on the poles on both sides of the battery module 31, improving space utilization.

[0078] In this application, the specific structure of tab 321 is not limited, as long as it can achieve electrical connection between the poles. In this embodiment, tab 321 is configured as an aluminum tab, which has low resistance, good conductivity, and low cost. In other embodiments, tab 321 can also be made of copper or other metal materials.

[0079] like Figure 7 As shown, the battery pack 30 also includes an insulating pad 40, which is located at both ends of the battery module 31, and the insulating pad 40 is laid above the bar 321. Compared with the prior art, a whole insulating plate is set above the battery module 31. Through the setting of the present application, the flexible circuit board 322 itself has insulating properties. Only setting the insulating pad 40 above the bar 321 can reduce the structural volume of the insulating pad 40, further improve the lightweight of the battery pack 30, and at the same time reduce the amount of material used and save processing costs. Among them, the insulating pad 40 is made of ceramic silicone rubber, which is the same material as the insulating layer on the beam 212, further reducing the manufacturing cost.

[0080] Among them, such as Figure 2 and Figure 8 As shown, the battery pack 30 also includes a connecting row 50, which collects the currents of multiple battery modules 31 to provide the required total current output. There is a certain distance between the connecting row 50 and the fixed point on the battery pack case 20. In this application, the cable tie 60 is installed on the fixed point, and the cable tie 60 is used to fix the foam 70 between the fixed point and the connecting row 50 to fill the distance between the connecting row 50 and the fixed point on the battery pack case 20, thereby achieving the fixation of the position of the connecting row 50 and ensuring the stability of the current output.

[0081] like Figure 9 As shown, the battery pack 30 also includes a box cover 80, and the box cover 80 is made of composite materials, so that the comprehensive performance of the box cover 80 is better than that of a single material. Preferably, the material selected for the box cover 80 is MCC composite material (Multi-fiber Compress Compound). Compared with the PCM series materials (Prepreg Compression Molding) commonly used in the prior art, although the structural strength of MCC composite materials is not as high as that of PCM series materials, it can meet the strength requirements of the battery pack box cover, and the cost of MCC composite materials is lower than that of PCM series materials. Compared with the SMC series materials (Sheet Molding Compound) commonly used in the prior art, although the cost of MCC composite materials is not as low as that of SMC series materials, its strength is higher than the structural strength of MCC composite materials. Therefore, the box cover 80 of the present application is made of MCC composite materials, which can not only meet the requirements of structural strength, but also save costs.

[0082] The battery pack provided in this application has the following advantages:

[0083] 1. The installation structure is arranged in the longitudinal space of the battery pack box, the horizontal space structure is compact, the installation structure is simple, and the battery pack is miniaturized;

[0084] 2. An insulating pad is set above the bar, and there is no module cover design, which is low cost;

[0085] 3. The battery pack box is a combination of a frame and horizontal and vertical beams to achieve a module-free design;

[0086] 4. The box cover is made of composite materials with low cost.

[0087] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0088] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0089] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0090] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0091] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0092] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that: The battery pack includes: A frame (21) having a plurality of battery accommodating cavities (210); a mounting beam (211), the mounting beam (211) being arranged between two adjacent battery accommodating cavities (210); A plurality of battery modules (31) are correspondingly arranged in the plurality of battery accommodating cavities (210), and the height of the mounting beam (211) is lower than the height of the battery modules (31); The mounting structure (10) comprises a carrying portion (11) and a connecting portion (12) distributed vertically, wherein the carrying portion (11) places an electronic device (100), and the connecting portion (12) is connected to the mounting beam (211). The carrying portion (11) is located above the battery module (31), and at least a portion of the connecting portion (12) is located between two adjacent battery modules (31).

2. The battery pack according to claim 1, wherein: The mounting beam (211) includes a cross-beam (212) and a longitudinal beam (213) arranged in a cross-arrangement. The cross-beam (212) is provided in plurality, and the plurality of cross-beams (212) are spaced apart and distributed along the stacking direction of the battery cells (33) in the battery module (31). The mounting structure (10) extends along the extension direction of the cross-beam (212), and the connecting portion (12) of the mounting structure (10) is connected to the longitudinal beam (213).

3. The battery pack according to claim 2, wherein: The mounting beam (211) includes a plurality of longitudinal beams (213), the plurality of longitudinal beams (213) are spaced apart along the extension direction of the transverse beam (212), and the plurality of connecting portions (12) are connected to the plurality of longitudinal beams (213) in a one-to-one correspondence.

4. The battery pack according to claim 1, wherein: The connecting portion (12) is formed with an accommodating space (101), and the accommodating space (101) is used for placing a wire harness.

5. The battery pack according to claim 4, characterized in that: The mounting structure (10) is bent to form a concave portion and a convex portion that are arranged opposite to each other, the top of the convex portion forms the bearing portion (11), the bottom of the concave portion forms the connecting portion (12), and the hollow portion of the concave portion forms the accommodating space (101).

6. The battery pack according to claim 1, wherein: At least a portion of the bearing portion (11) is provided with a reinforcement structure, and / or at least a portion of the connecting portion (12) is provided with a reinforcement structure.

7. The battery pack according to claim 6, characterized in that: The end surface of the bearing portion (11) facing the electronic device (100) is provided with a recess (110), the extension direction of the recess (110) being the same as the extension direction of the mounting structure (10), and the recess (110) forming the reinforcement structure.

8. The battery pack according to claim 1, wherein: A wire harness fixing portion (111) is provided at the edge of the load-bearing portion (11), and the wire harness fixing portion (111) is used to fix the wire harness.

9. The battery pack according to claim 8, characterized in that: The wire harness fixing portion (111) comprises a connecting section and a supporting section arranged in sequence, one end of the connecting section is connected to the bearing portion (11), an extension direction of the connecting section and an extension direction of the supporting section form an included angle, the supporting section is located above the bearing portion (11), and a wire harness is provided on the supporting section to fix the wire harness.

10. The battery pack according to claim 2, wherein: An insulating layer is provided on each of the crossbeams (212).

11. The battery pack according to claim 2, wherein: The battery module (31) further includes a CCS assembly (32), the CCS assembly (32) being located above the battery cell (33), the CCS assembly (32) including a tab (321) and a flexible circuit board (322), poles being provided at both ends of the battery module (31), the tab (321) covering the poles and being electrically connected to the poles, the flexible circuit board (322) being located in the middle of the battery module (31) and being electrically connected to the tab (321), the battery pack further including an insulating pad (40), the insulating pad (40) being located at both ends of the battery module (31), and the insulating pad (40) being laid above the tab (321).

12. The battery pack according to claim 2, wherein: An anti-error column (122) is provided at the edge of the mounting structure (10), and a through hole is correspondingly provided on the longitudinal beam (213). The anti-error column (122) can be inserted into the through hole, and the anti-error column (122) cooperates with the through hole to form an anti-error structure.

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