Battery pack and electric device

Abstract

This application relates to a battery pack and an electrical device, belonging to the field of battery technology. It includes a first frame, a second frame, and multiple battery packs. The first frame encloses a first receiving cavity; the second frame encloses a second receiving cavity, and the second frame is disposed on one side of the first frame along a first direction and connected to the first frame. Along a second direction, the size of the second frame is larger than the size of the first frame, and the first and second directions intersect. At least one battery pack is disposed within the first receiving cavity, and at least one battery pack is disposed within the second receiving cavity. By setting the size of the second frame in the second direction to be smaller than the size of the first frame in the second direction, and designing different sizes for the first and second frames according to the space inside the vehicle and the size of the battery packs, it is possible to avoid obstacles from working tools, adapt to the space constraints of special vehicles, achieve integrated battery pack design, and improve space utilization.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Technology

[0002] The new energy vehicle industry has experienced rapid development in recent years, and the battery pack, as a crucial component, directly impacts vehicle performance and safety. Currently, most battery packs for special vehicles on the market are standard packs, which suffer from structural redundancy and low space utilization. Utility Model Content

[0003] This application provides a battery pack and an electrical device to at least partially solve the technical problems of redundant battery pack structure and low space utilization.

[0004] To achieve the above objectives, according to a first aspect of this application, this application provides a battery pack, comprising:

[0005] The first frame, the first frame enclosing the first receiving cavity;

[0006] The second frame surrounds the second receiving cavity. The second frame is disposed on one side of the first frame along the first direction and is connected to the first frame. Along the second direction, the size of the second frame is smaller than the size of the first frame, and the first direction intersects the second direction.

[0007] Multiple battery packs, at least one battery pack is disposed in a first receiving cavity, and at least one battery pack is disposed in a second receiving cavity.

[0008] In some embodiments, the battery pack includes a plurality of second frames, which are respectively disposed on both sides of the first frame along a first direction.

[0009] In some embodiments, the battery pack includes:

[0010] The support frame includes a plurality of first connecting parts and a plurality of second connecting parts, wherein the first connecting parts extend along a first direction and the second connecting parts extend along a second direction;

[0011] Multiple third connecting parts are provided, and the multiple third connecting parts extend along a third direction;

[0012] At least a portion of the support frame and at least a portion of the third connecting portion form a first frame, and at least a portion of the support frame and at least a portion of the third connecting portion form a second frame.

[0013] In some embodiments, the battery pack includes a base plate and a side plate, the base plate being connected to the side of the support frame away from the third connection portion, and the side plate being connected to the side of the third connection portion away from the first and second receiving cavities.

[0014] In some embodiments, the battery pack includes a cover plate disposed on the side of the third connection portion away from the support frame;

[0015] The battery pack includes a sealing beam disposed between the third connecting part and the cover plate, and connected to the third connecting part and the cover plate respectively.

[0016] In some embodiments, the battery pack includes a plurality of support portions and a plurality of fourth connecting portions, the support portions being disposed on the side of the third connecting portion away from the support frame, and each fourth connecting portion being fixed to two oppositely disposed support portions.

[0017] In some embodiments, the cover plate and the third connecting portion enclose a plurality of receiving spaces, each of which is provided with a battery pack, and the battery pack is connected to the fourth connecting portion.

[0018] In some embodiments, the battery pack includes fasteners that pass through the sealing beam.

[0019] In some embodiments, the battery pack includes a coating applied to the side of the base plate away from the third connection portion.

[0020] According to a second aspect of this application, this application provides an electrical device including the aforementioned battery pack.

[0021] This application provides a battery pack including a first frame, a second frame, and multiple battery packs. The first frame encloses a first receiving cavity; the second frame encloses a second receiving cavity, and the second frame is disposed on one side of the first frame along a first direction and connected to the first frame. Along a second direction, the size of the second frame is larger than the size of the first frame, and the first direction intersects the second direction. At least one battery pack is disposed within the first receiving cavity, and at least one battery pack is disposed within the second receiving cavity. By setting the size of the second frame in the second direction to be smaller than the size of the first frame in the second direction, and designing different sizes of the first and second frames according to the space inside the vehicle and the size of the battery packs, it is possible to avoid obstacles from working tools, adapt to the space constraints of special vehicles, achieve integrated battery pack design, and improve space utilization.

[0022] The electrical device in this application includes the battery pack described above. Therefore, the electrical device can have all the technical features and beneficial effects of the battery pack described above, which will not be repeated here.

[0023] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0026] Figure 1 This is a schematic diagram of the structure of the first frame and the second frame provided in an exemplary embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of the first frame and the second frame provided in yet another exemplary embodiment of this application;

[0028] Figure 3 This is a partial structural diagram of the battery pack provided in an exemplary embodiment of this application;

[0029] Figure 4 This is a partial structural schematic diagram of a battery pack provided in another exemplary embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the structure of the battery pack provided in an exemplary embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the structure of a battery pack provided in yet another exemplary embodiment of this application;

[0032] Figure 7 This is a partial structural diagram of a battery pack provided in another exemplary embodiment of this application;

[0033] Figure 8 This is a cross-sectional view of the battery pack provided in an exemplary embodiment of this application;

[0034] Figure 9 yes Figure 8 Enlarged view of part A;

[0035] Figure 10 This is a cross-sectional view of a battery pack provided in yet another exemplary embodiment of this application;

[0036] Figure 11 yes Figure 10 Enlarged view of part B.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. First frame; 2. Second frame; 3. Battery pack; 4. Support frame; 5. Third connecting part; 6. Base plate; 7. Side plate; 8. Cover plate; 9. Sealing beam; 10. Support part; 11. Fourth connecting part; 12. Accommodating space; 13. Fastener; 40. First connecting part; 41. Second connecting part; 100. First accommodating cavity; 200. Second accommodating cavity; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0040] The applicant notes that the new energy vehicle industry has experienced rapid development in recent years, and the battery pack, as a crucial component, directly impacts vehicle performance and safety. Currently, most battery packs for special vehicles on the market are standard packs, meaning they are disassembled into multiple smaller battery packs for suspension installation. This method is costly, inefficient, and slow. Furthermore, the standard pack housings are typically made of sheet metal or aluminum profiles, which often result in insufficient strength when carrying large amounts of electricity, posing safety hazards. In addition, installing multiple housings within a limited space leads to complex and redundant structural components, and standard packs are mostly single-layered, resulting in low space utilization.

[0041] In view of this, embodiments of this application provide a battery pack, including a first frame, a second frame, and multiple battery packs. The first frame encloses a first receiving cavity; the second frame encloses a second receiving cavity, and the second frame is disposed on one side of the first frame along a first direction and connected to the first frame; along a second direction, the size of the second frame is larger than the size of the first frame, and the first direction intersects the second direction; at least one battery pack is disposed within the first receiving cavity, and at least one battery pack is disposed within the second receiving cavity. By setting the size of the second frame in the second direction to be smaller than the size of the first frame in the second direction, and designing different sizes of the first and second frames according to the space inside the vehicle and the size of the battery packs, it is possible to avoid obstacles for working tools, adapt to the space constraints of special vehicles, achieve integrated battery pack design, and improve space utilization.

[0042] The battery pack and power supply device of this application will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.

[0043] This application provides a battery pack including a first frame 1, a second frame 2, and multiple battery packs 3. The first frame 1 encloses a first receiving cavity 100; the second frame 2 encloses a second receiving cavity 200. The second frame 2 is disposed on one side of the first frame 1 along a first direction X and connected to the first frame 1. Along a second direction Y, the size of the second frame 2 is smaller than the size of the first frame 1, and the first direction X intersects the second direction Y. At least one battery pack 3 is disposed within the first receiving cavity 100, and at least one battery pack 3 is disposed within the second receiving cavity 200. The first frame 1 and the second frame 2 can be connected by welding to ensure the strength and installation efficiency of the battery pack. Furthermore, the first frame 1 and the second frame 2 can be designed with different sizes according to the space inside the vehicle and the size of the battery packs 3, achieving integrated battery pack design while improving space utilization.

[0044] In some embodiments, Figure 1 This is a schematic diagram of the structure of the first frame 1 and the second frame 2 provided in an exemplary embodiment of this application, with reference to... Figure 1 The first frame 1 and the second frame 2 enclose each other to form an L-shaped structure. The size of the second frame 2 in the second direction Y is smaller than that of the first frame 1 in the second direction Y, so that it can avoid the work tools and adapt to the space constraints of special vehicles, thus solving the problems of low space utilization and structural redundancy in the current standard package.

[0045] In some embodiments, the battery pack includes a plurality of second frames 2, which are respectively disposed on both sides of the first frame 1 along the first direction X. By disposing of the second frames 2 on both sides of the first frame 1, the accommodating space 12 of the battery pack is further expanded, which can accommodate more battery packs 3. The symmetrically distributed second frames 2 make the overall structure more evenly stressed, which can avoid local stress concentration and enhance structural stability. Figure 2 This is a schematic diagram of the structure of the first frame 1 and the second frame 2 provided in another exemplary embodiment of this application, with reference to... Figure 2 The first frame 1 and the second frame 2 enclose each other to form a T-shaped structure, which can avoid the work tools and adapt to the space constraints of special vehicles, solving the problems of low space utilization and structural redundancy in the current standard package. The size and relative position of the second frame 2 and the first frame 1 can be designed according to the layout of the work tools in the vehicle, thereby improving flexibility and space utilization, and solving the problem that the current standard package is difficult to adapt to the complex space of special vehicles due to its fixed size.

[0046] In some embodiments, the battery pack includes a support frame 4 for supporting the battery pack 3. The support frame 4 includes a plurality of first connecting portions 40 and a plurality of second connecting portions 41. The first connecting portions 40 extend along a first direction X, and the second connecting portions 41 extend along a second direction Y. The battery pack also includes a plurality of third connecting portions 5, which extend along a third direction Z. The first connecting portions 40 and the second connecting portions 41 are welded together using square tubing, which can enhance the overall strength of the battery pack and overcome the shortcomings of insufficient strength of conventional sheet metal or aluminum profile enclosures. At least a portion of the support frame 4 and at least a portion of the third connecting portions 5 form a first frame 1, and at least a portion of the support frame 4 and at least a portion of the third connecting portions 5 form a second frame 2. The connection between the first frame 1 and the second frame 2 is fully welded to ensure the load-bearing capacity of the overall structure.

[0047] In some embodiments, Figure 3 This is a partial structural diagram of the battery pack provided in an exemplary embodiment of this application, with reference to... Figure 3 The battery pack includes a base plate 6 and side plates 7. The base plate 6 is connected to the side of the support frame 4 away from the third connecting part 5, and the side plates 7 are connected to the side of the third connecting part 5 away from the first receiving cavity 100 and the second receiving cavity 200. The base plate 6 and side plates 7 can be covered with sheet metal skin to cover the support frame 4 and the third connecting part 5, and welded to the support frame 4 and the third connecting part 5, thereby further improving the strength and sealing of the battery pack.

[0048] In some embodiments, Figure 5 This is a schematic diagram of the battery pack structure provided in an exemplary embodiment of this application, with reference to... Figure 5 The battery pack includes a cover plate 8, which is located on the side of the third connecting part 5 away from the support frame 4, forming a closed top structure of the battery pack. The battery pack also includes a sealing beam 9, which is located between the third connecting part 5 and the cover plate 8 and connected to both the third connecting part 5 and the cover plate 8. It is understood that by providing a sealing beam 9 between the cover plate 8 and the third connecting part 5, the risk of welding deformation can be reduced, and dust, moisture, etc. can be prevented from entering the first receiving cavity 100 and the second receiving cavity 200 and thus affecting the battery pack 3, thereby improving the safety and reliability of the battery pack.

[0049] In some embodiments, Figure 4 This is a partial structural diagram of a battery pack provided in another exemplary embodiment of this application, with reference to... Figure 4 The battery pack includes multiple support portions 10 and multiple fourth connecting portions 11. The support portions 10 are located on the side of the third connecting portion 5 away from the support frame 4, and each fourth connecting portion 11 is fixed to two oppositely arranged support portions 10. Figure 10 This is a cross-sectional view of a battery pack provided in another exemplary embodiment of this application. Figure 11 yes Figure 10 Enlarged view of part B, refer to Figure 10 and Figure 11 The support portion 10 is welded to the third connecting portion 5, and the fourth connecting portion 11 overlaps the two opposing support portions 10 and is connected by bolts. The fourth connecting portion 11 can be used to support the battery pack 3, thus solving the problem of low space utilization in the standard single-layer structure. By setting the support portion 10, the structural stability of the fourth connecting portion 11 can be enhanced, ensuring the load-bearing capacity of the fourth connecting portion 11.

[0050] In some embodiments, Figure 6 This is a schematic diagram of the structure of a battery pack provided in another exemplary embodiment of this application, referred to... Figure 6 The cover plate 8 and the third connecting part 5 form multiple receiving spaces 12. Figure 7 This is a partial structural diagram of a battery pack provided in another exemplary embodiment of this application, with reference to... Figure 7 Each of the multiple accommodating spaces 12 is equipped with a battery pack 3, and the battery pack 3 is connected to the fourth connecting part 11. The cover plate 8 protrudes towards the side away from the bottom plate 6 and forms multiple accommodating spaces 12. The accommodating spaces 12 correspond one-to-one with the first accommodating cavity 100 and the second accommodating cavity 200 in the third direction Z. The fourth connecting part 11 can accommodate the double-layer battery pack 3 without encroaching on the storage space of the lower battery pack 3.

[0051] In some embodiments, Figure 9 yes Figure 8 Enlarged view of part A, Figure 10 This is a cross-sectional view of a battery pack provided in another exemplary embodiment of this application, with reference to... Figure 9 and Figure 10 The battery pack includes fasteners 13, which pass through the sealing beam 9. Fasteners 13 are internally tapped for subsequent connection to the vehicle. The battery pack can be connected to the vehicle body via mounting points on all four sides. The tapped fasteners 13 can directly serve as the connection carrier for these mounting points, engaging with the threaded components on the side of the vehicle body to achieve rapid fixation of the battery pack to the vehicle body. This eliminates the need for additional connection structures, reduces redundant components, further optimizes space utilization, and makes installation simple, straightforward, and quick.

[0052] In some embodiments, the battery pack includes a coating (not shown) applied to the side of the base plate 6 away from the third connection portion 5. Exemplarily, the coating may be a PVC (Polyvinyl chloride) coating or other wear-resistant and corrosion-resistant coating, applied to the base plate 6 using a spraying process to improve resistance to bottom impacts and ball strikes.

[0053] According to a second aspect of this application, an electrical device is provided, including the aforementioned battery pack. The battery pack includes a first frame 1, a second frame 2, and multiple battery packs 3. The first frame 1 encloses a first receiving cavity 100; the second frame 2 encloses a second receiving cavity 200. The second frame 2 is disposed on one side of the first frame 1 along a first direction X and connected to the first frame 1. Along a second direction Y, the size of the second frame 2 is smaller than the size of the first frame 1, and the first direction X intersects the second direction Y. At least one battery pack 3 is disposed within the first receiving cavity 100, and at least one battery pack 3 is disposed within the second receiving cavity 200. The first frame 1 and the second frame 2 can be connected by welding to ensure the strength and installation efficiency of the battery pack. Furthermore, the first frame 1 and the second frame 2 can be designed with different sizes according to the space inside the vehicle and the size of the battery packs 3, achieving integrated battery pack design while improving space utilization. The electrical device includes the aforementioned battery pack, therefore, the electrical device can possess all the technical features and beneficial effects of the aforementioned battery pack, which will not be elaborated further here.

[0054] The electrical devices described in this application include, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Taking a vehicle as an example, one embodiment of this application provides an electrical device with a battery pack installed inside the vehicle. The battery pack can be located at the bottom, front, or rear of the vehicle. The battery pack can be used to power the vehicle; for example, it can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller controls the battery pack to supply power to the motor, for example, to meet the vehicle's power needs during starting, navigation, and driving. The battery pack can not only serve as the vehicle's operating power source but also as its driving power source, replacing or partially replacing fuel or natural gas to provide driving force for the vehicle.

[0055] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0057] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A battery pack, characterized in that, include: A first frame, the first frame enclosing a first receiving cavity; A second frame surrounds a second receiving cavity. The second frame is disposed on one side of the first frame along a first direction and is connected to the first frame. Along a second direction, the size of the second frame is smaller than the size of the first frame. The first direction intersects the second direction. Multiple battery packs, at least one of the battery packs is disposed in the first receiving cavity, and at least one of the battery packs is disposed in the second receiving cavity.

2. The battery pack according to claim 1, characterized in that, The battery pack includes a plurality of second frames, which are respectively disposed on both sides of the first frame along the first direction.

3. The battery pack according to claim 1 or 2, characterized in that, The battery pack includes: A support frame, the support frame including a plurality of first connecting portions and a plurality of second connecting portions, the first connecting portions extending along a first direction, and the second connecting portions extending along a second direction; A plurality of third connecting portions, wherein the plurality of third connecting portions are provided to extend along a third direction; At least a portion of the support frame and at least a portion of the third connecting portion form the first frame, and at least a portion of the support frame and at least a portion of the third connecting portion form the second frame.

4. The battery pack according to claim 3, characterized in that, The battery pack includes a base plate and a side plate. The base plate is connected to the side of the support frame away from the third connecting portion, and the side plate is connected to the side of the third connecting portion away from the first receiving cavity and the second receiving cavity.

5. The battery pack according to claim 4, characterized in that, The battery pack includes a cover plate disposed on the side of the third connection portion away from the support frame; The battery pack includes a sealing beam disposed between the third connecting portion and the cover plate, and connected to the third connecting portion and the cover plate respectively.

6. The battery pack according to claim 5, characterized in that, The battery pack includes multiple support portions and multiple fourth connecting portions. The support portions are located on the side of the third connecting portion away from the support frame, and each fourth connecting portion is fixed to two oppositely arranged support portions.

7. The battery pack according to claim 6, characterized in that, The cover plate and the third connecting part enclose a plurality of receiving spaces, each of which is provided with the battery pack, and the battery pack is connected to the fourth connecting part.

8. The battery pack according to claim 5, characterized in that, The battery pack includes fasteners that pass through the sealing beam.

9. The battery pack according to claim 4, characterized in that, The battery pack includes a coating applied to the side of the base plate away from the third connection portion.

10. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 9.

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