Battery pack and electric device

Abstract

The utility model relates to a kind of battery pack and electric equipment, battery pack includes: battery box;At least one battery module, battery module includes first support, second support and battery cell group, reinforcing rib is set on first support and second support, first support and second support are symmetrically set on battery cell group, first support and second support form contactless annular groove in the circumferential direction of battery cell group, battery module is set in battery box;Support module, including several sheet metal parts, each sheet metal part is set on the inner wall surface of battery box, and each sheet metal part is respectively resisted in first support and second support. Thus, without adding connecting piece to connect, make it suitable for compact installation field;Also make the more space in the battery box of unit volume to accommodate battery cell group, improve the energy density of product.In addition, the durability of product is also guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and more particularly to battery packs and electrical equipment. Background Technology

[0002] Modern battery packs typically consist of a housing with a mounting bracket. Multiple battery cells are connected via the cell bracket to form a battery module. The battery module is then placed inside the housing, and the cell bracket is connected to the mounting bracket to fix the battery module in a predetermined position within the housing.

[0003] However, both the mounting bracket and the cell bracket require a certain amount of space (within the battery pack), and additional space needs to be reserved for the screws (the space for the screws themselves and the space for torque tools). This makes it difficult for the battery pack to fit into small spaces, resulting in poor space adaptability. Secondly, the limited installation space for the cells within the battery pack leads to low energy density. While some existing technologies employ a bracket-free design (i.e., without mounting brackets and cell brackets), in practical applications, battery modules are prone to mutual compression and damage, affecting battery durability. Utility Model Content

[0004] This utility model provides a battery pack and electrical equipment that can solve the problems of poor space adaptability, low battery energy density and poor battery durability.

[0005] This utility model provides a battery pack, which includes: Battery box; At least one battery module, the battery module comprising a first bracket, a second bracket, and a cell assembly, wherein the first bracket and the second bracket are each provided with reinforcing ribs, the first bracket and the second bracket are symmetrically arranged on the cell assembly, and the first bracket and the second bracket together form a contactless annular groove along the circumferential direction of the cell assembly, the battery module being disposed within a battery case; and The support module includes several sheet metal parts, each of which is disposed on the inner wall surface of the battery box, and each of which abuts against the first bracket and the second bracket respectively.

[0006] Preferably, the battery pack includes a plurality of battery modules, each of which is arranged one by one in the battery box along a straight line, and two adjacent contactless annular grooves are aligned with each other; Every two adjacent first supports abut against each other, and every two adjacent second supports abut against each other.

[0007] Preferably, the first support includes a base plate, two surrounding plates, and two reinforcing plates; The two enclosure panels and the two reinforcing plates are respectively disposed on the base plate, and the enclosure panels and the reinforcing plates are disposed alternately one by one, and the enclosure panels and the reinforcing plates together define a storage groove on the base plate; Two enclosure panels are symmetrically arranged on the base plate, and two reinforcing plates are symmetrically arranged on the base plate, with each reinforcing plate having a reinforcing rib. The storage slot is for storing at least a portion of the battery cell assembly.

[0008] Preferably, the battery pack includes a plurality of battery cells; The first bracket also includes several partition plates, each of which is spaced apart in the storage groove, thereby defining several storage cavities in the storage groove, each of which corresponds to storing one battery cell.

[0009] Preferably, the second bracket includes a cover plate, four surrounding plates and several partition plates. The four surrounding plates are all disposed on the cover plate, and two of the mutually symmetrical surrounding plates are each provided with reinforcing ribs. The four surrounding plates together enclose a receiving groove on the cover plate. Each partition plate is disposed at intervals in the receiving groove, thereby defining multiple receiving cavities in the receiving groove. Each receiving cavity has a clearance hole at its bottom. Each of the accommodating cavities corresponds to and is aligned with each other, and each of the electrode posts on each of the battery cells is correspondingly inserted into each of the clearance holes.

[0010] Preferably, each of the battery modules further includes a battery cover, which is disposed on the second bracket and covers each of the electrode posts on each of the battery cells. Each battery cover has an alignment groove. Each of the sheet metal parts includes at least one alignment sheet metal strip, each of the alignment sheet metal strips is disposed inside the battery box, and each of the alignment sheet metal strips is inserted into the alignment groove one by one.

[0011] Preferably, each of the sheet metal parts includes two sheet metal frames, which are symmetrically arranged on the inner wall surface of the battery box; Each of the battery modules is clamped on two sheet metal frames, and each sheet metal frame abuts against the first bracket and the second bracket respectively.

[0012] Preferably, each of the sheet metal parts further includes a support frame and a support strip. The support frame is disposed on the inner wall surface of the battery box, and the support frame is provided with two support steps. An installation groove is provided between the two support steps, and the support strip is disposed in the installation groove. The support frame abuts against one of the battery modules, one of the support steps abuts against the first bracket, the other support step abuts against the second bracket, the support bar is inserted into the contactless annular groove, and the support bar abuts against the cell assembly.

[0013] Preferably, the support module further includes several silicone pads, and there is a mating gap between some of the sheet metal parts and the battery module, with the silicone pads disposed within the mating gap.

[0014] The second aspect of this utility model also provides an electrical device, which includes a frame, an electrical device, and a battery pack as described in any of the above technical solutions. The electrical device and the battery pack are respectively disposed on the frame, and the battery pack is electrically connected to the electrical device.

[0015] The following are the beneficial effects of implementing this utility model: This utility model relates to a battery pack and an electrical device, wherein the electrical device is equipped with a battery pack. On the battery pack, a first bracket and a second bracket are symmetrically arranged, and reinforcing ribs are respectively provided on the first bracket and the second bracket, thereby forming a frame around the battery cell assembly that only serves to enclose it; at the same time, by supporting modules abutting against each battery module from various directions, the battery modules can be fixed.

[0016] In this way, there is no need to add connectors between the first bracket and the battery box, between the second bracket and the battery box, or between the first bracket and the second bracket. This eliminates the operating space and redundant component space required by traditional locking connections, significantly improving the space adaptability of the battery pack and making it suitable for compact installation sites. It also allows more space in the battery box per unit volume to accommodate the battery cells, thus increasing the energy density of the product.

[0017] Furthermore, when multiple battery modules are configured and stacked within the battery box, the first supports of two adjacent battery modules will support each other, and the second supports of two adjacent battery modules will also support each other. Since each first and second support is equipped with reinforcing ribs, it prevents the first and second supports from being damaged due to excessive load. Simultaneously, the non-contact annular groove design ensures that even when two battery modules are stacked, their respective cell groups will not come into contact, preventing damage to the cell groups and ensuring product durability. Attached Figure Description

[0018] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally denote like parts.

[0019] Figure 1 This is a schematic diagram of the battery pack structure in some embodiments of this utility model; Figure 2 This is an exploded view of the battery pack in some embodiments of this utility model; Figure 3 From another perspective Figure 2 Exploded view of the battery pack shown; Figure 4 This is another exploded view of the battery pack in some embodiments of this utility model; Figure 5 This is an exploded view of the battery pack in some other embodiments of this utility model; Figure 6 From another perspective Figure 5 Exploded view of the battery pack shown; Figure 7 This is a partial structural schematic diagram of the battery pack in some embodiments of this utility model; Figure 8 From another perspective Figure 7 The diagram shows the structure of the battery pack. Figure 9 This is a schematic diagram of the structure of the support module in some embodiments of this utility model.

[0020] Explanation of icon numbers: 10 - Battery pack; 40 - Reinforcing rib; 50 - Round hole; 1-Battery box; 11-Box body; 12-Top cover; 13-Electrical cover; 131-Connector; 14-Mounting cavity; 2-Battery module; 21-First bracket; 211-Base plate; 212-Enclosure plate; 213-Reinforcing plate; 214-Storage slot; 2141-Storage cavity; 2241-Accommodation cavity; 2242-Allowing hole; 215-Divider plate; 22-Second bracket; 221-Cover plate; 222-Enclosure plate; 223-Isolation plate; 224-Accommodation slot; 23-Cell assembly; 231-Cell; 232-Electrode post; 24-Contactless annular groove; 25-Battery cover; 251-Alignment groove; 3-Support module; 31-Sheet metal part; 311-Alignment sheet metal strip; 312-Sheet metal frame; 313-Support frame; 3131-Support step; 3132-Mounting groove; 314-Support strip; 32-Silicone pad. Detailed Implementation

[0021] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0022] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Figure 1 The battery pack 10 in some embodiments of the present invention is shown. The battery pack 10 can be applied to various electrical devices or energy storage devices in the prior art. The specific application field or application method is not limited here.

[0026] like Figures 1 to 3As shown, the battery pack 10 includes a battery box 1, battery modules 2, and a support module 3. The number of battery modules 2 can be flexibly set, and can be configured as one, two, three, four, five, or more, depending on the application scenario and design requirements. The battery modules 2 are disposed inside the battery box 1, and the support module 3 is disposed inside the battery box 1, with the support module 3 abutting against the battery modules 2.

[0027] It should be noted that the battery box 1 serves to house the remaining components and modules. The battery module 2 is used to store and output electrical energy. The support module 3 is used to fix the position of the battery module 2 within the battery box 1.

[0028] like Figures 2 to 8 As shown, the battery module 2 includes a first bracket 21, a second bracket 22, and a cell assembly 23. Both the first bracket 21 and the second bracket 22 are provided with reinforcing ribs 40. The first bracket 21 and the second bracket 22 are symmetrically arranged on the cell assembly 23. The first bracket 21 and the second bracket 22 together form a contactless annular groove 24 in the circumferential direction of the cell assembly 23. The battery module 2 is disposed in the battery box 1.

[0029] The support module 3 includes several sheet metal parts, each of which is disposed on the inner wall surface of the battery box 1, and each sheet metal part abuts against the first bracket 21 and the second bracket 22 respectively.

[0030] Understandably, the battery box 1 provides a sealed protective space for housing the battery module 2 and the support module 3, protecting it from external environmental impacts. The battery module 2 is used for energy storage and release, and its modular design allows for flexible configuration of the battery pack 10's capacity; the number of battery modules 2 can be flexibly set according to actual application requirements.

[0031] The support module 3 applies multi-directional constraint forces and physical structural limits to the battery module 2 through various sheet metal parts, replacing the traditional connectors to fix the position of the battery module 2 in the battery box 1.

[0032] The first bracket 21 and the second bracket 22 symmetrically form an enclosing frame, correspondingly supporting and accommodating the circumferential boundary of the battery cell assembly 23, thereby transmitting the supporting force of the support module 3 to stabilize the battery cell assembly 23. The symmetrical arrangement of the second bracket 22 and the first bracket 21 can also form a symmetrical support structure for the battery cell assembly 23, dispersing external pressure and maintaining the positioning accuracy of the battery cell assembly 23.

[0033] The battery cell assembly 23 is used to store chemical energy and convert it into electrical energy output. Its periphery is surrounded and limited by the first bracket 21 and the second bracket 22 to ensure charging and discharging stability.

[0034] The contactless annular groove 24 is located between the first support 21 and the second support 22. This groove forms a physical isolation space, preventing direct contact between adjacent cell groups 23 that could lead to short circuits or mechanical damage. Especially in embodiments where the battery modules 2 are configured in pairs or more and stacked, the contactless annular groove 24 prevents contact between adjacent cell groups 23, prevents pressure generated during stacking from being transmitted between the cell groups 23, prevents damage to the cell groups 23, and improves product durability.

[0035] The reinforcing rib 40 enhances the compressive strength of the first support 21 and the second support 22, preventing structural deformation or breakage due to concentrated load during stacking.

[0036] Each sheet metal part 31 of the support module 3 directly abuts against the first bracket 21 and the second bracket 22, and the rigid support counteracts the displacement tendency of the battery module 2 in the battery box 1, simplifying the fixing structure.

[0037] In summary, eliminating traditional locking connectors reduces redundant space occupation, increases the volumetric efficiency of the cell pack 23 within the battery box 1, and achieves higher energy density. The reinforcing ribs 40 and the contactless annular grooves 24 respectively address the issues of stacking pressure and cell isolation, while the supporting mechanism of the module 3 ensures overall vibration resistance and stability. The modular battery module 2 and boltless fixing design allow the battery pack 10 to adapt to compact installation scenarios.

[0038] like Figure 2 and Figure 3 As shown, in some embodiments of the battery pack 10, the battery pack 10 includes a plurality of battery modules 2, each battery module 2 is arranged one by one in the battery box 1 along a straight line, and two adjacent contactless annular grooves 24 are aligned with each other; every two adjacent first supports 21 abut against each other, and every two adjacent second supports 22 abut against each other.

[0039] Understandably, arranging multiple battery modules 2 one by one along a straight line enables a high-density arrangement of the battery modules 2 and optimizes the internal space utilization of the battery box 1. After each battery module 2 is correspondingly placed inside the battery box 1, the contactless annular grooves 24 of any two adjacent battery modules 2 will be aligned with each other, so that no two adjacent cell groups 23 will come into contact.

[0040] By configuring each pair of adjacent first supports 21 to abut against each other, and each pair of adjacent second supports 22 to abut against each other, the pressure can be shared by each first support 21 and each second support 22, thereby enhancing the overall pressure resistance stability of the product.

[0041] It should be noted that, through the content of this embodiment, it is possible to eliminate the need to set up connecting parts between each pair of battery modules 2, thereby further reducing the assembly space.

[0042] like Figure 7 and Figure 8 As shown, in some embodiments of the battery pack 10, the first support 21 includes a base plate 211, two surrounding plates 212, and two reinforcing plates 213. The two surrounding plates 212 and the two reinforcing plates 213 are respectively disposed on the base plate 211, and each surrounding plate 212 and each reinforcing plate 213 is alternately disposed, with each surrounding plate 212 and each reinforcing plate 213 jointly defining a storage groove 214 on the base plate 211. The two surrounding plates 212 are symmetrically disposed on the base plate 211, and the two reinforcing plates 213 are symmetrically disposed on the base plate 211, with each reinforcing plate 213 having a reinforcing rib 40. The storage groove 214 corresponds to storing at least a portion of the battery cell assembly 23.

[0043] Understandably, the base plate 211 provides a supporting plane. The surrounding plate 212 and the reinforcing plate 213 together restrict the displacement of the battery cell assembly 23 on the base plate 211 and resist lateral impact forces. The storage slot 214 can accurately position the battery cell assembly 23 to avoid installation misalignment. The reinforcing ribs 40 are set on the reinforcing plate 213 to specifically enhance the bending strength of the reinforcing plate 213 and prevent deformation under load.

[0044] like Figure 7 and Figure 8 As shown, in some embodiments of the battery pack 10, the cell group 23 includes a plurality of cells 231; The first bracket 21 also includes several partition plates 215, each partition plate 215 is arranged at intervals in the storage groove 214, thereby defining several storage cavities 2141 in the storage groove 214, each storage cavity 2141 corresponding to a battery cell 231.

[0045] Understandably, the partition plates 215 are spaced apart within the storage slot 214, which can divide the storage slot 214 into multiple independent accommodating spaces to accommodate the battery cells 231, preventing collisions or friction between individual battery cells 231. The storage cavity 2141 provides a physical isolation environment for a single battery cell 231, which can block the path of thermal runaway propagation to a certain extent.

[0046] It should be noted that in this embodiment, the storage cavity 2141 divided by the partition plate 215 achieves independent protection for the battery cell 231, reducing the cascading risk caused by individual cell failure. It also improves heat dissipation uniformity, preventing localized overheating, and enhances structural seismic resistance, limiting the displacement of the battery cell 231 in a vibrating environment.

[0047] like Figure 7 and Figure 8As shown, in some embodiments of the battery pack 10, the second bracket 22 includes a cover plate 221, four surrounding plates 222 and several isolation plates 223. The four surrounding plates 222 are all disposed on the cover plate 221. Each of the two mutually symmetrical surrounding plates 222 is provided with a reinforcing rib 40. The four surrounding plates 222 together enclose a receiving groove 224 on the cover plate 221. Each isolation plate 223 is disposed at intervals in the receiving groove 224, thereby defining a plurality of receiving cavities 2241 in the receiving groove 224. Each receiving cavity 2241 has a clearance hole 2242 at its bottom. Each accommodating cavity 2241 corresponds to and is aligned with each receiving cavity 2141, and each electrode post 232 on each battery cell 231 is correspondingly inserted into each clearance hole 2242.

[0048] Understandably, the cover plate 221 covers the top of the cell assembly 23, providing sealing protection and structural support. The surrounding plate 222 vertically encloses and forms the lateral boundary of the cell assembly 23, restricting the displacement of the cell 231. The reinforcing rib 40 is located on the surrounding plate 222, which can enhance the deformation resistance of the corresponding surrounding plate 222. The receiving groove 224 and the receiving groove 214 respectively cover the cell assembly 23 from opposite sides, providing reliable layer protection. The isolation plate 223 can divide the receiving groove 224 into multiple independent receiving cavities 2241, thereby isolating adjacent cells 231 through the receiving cavities 2241. The clearance hole 2242 provides a through channel for the electrode post 232, facilitating connection with conductive components.

[0049] It should be noted that when multiple battery modules are stacked, the enclosure plate 222 with reinforcing ribs 40 on one of the two adjacent battery modules 2 will support the enclosure plate 222 with reinforcing ribs 40 on the other battery module 2, thereby ensuring that the force is transmitted on the enclosure plate 222 with higher strength.

[0050] like Figures 4 to 8 As shown, in some embodiments of the battery pack 10, each battery module 2 further includes a battery cover 25, which is disposed on the second bracket 22. The battery cover 25 covers each electrode post 232 on each cell group 23, and each battery cover 25 is provided with an alignment groove 251. Each sheet metal part includes at least one alignment sheet metal strip 311, and each alignment sheet metal strip 311 is disposed in the battery box 1. Each alignment sheet metal strip 311 is inserted into each alignment groove 251 in a corresponding manner.

[0051] Understandably, the battery cover 25 shields the electrode post 232, providing protection. The alignment groove 251 and the alignment sheet metal strip 311 are inserted into each other to achieve quick positioning and locking of the battery cover 25. The alignment sheet metal strip 311 is inserted into the alignment groove 251, and the constraint force can be transmitted to the battery cover 25 through the battery box 1 and the alignment sheet metal strip 311.

[0052] It should be noted that in this embodiment, the alignment groove 251 and the alignment sheet metal strip 311 are used to achieve boltless fixing of the battery cover 25 to the battery box 1.

[0053] like Figures 4 to 6 As shown, in some embodiments of the battery pack 10, each sheet metal part includes two sheet metal frames 312, which are symmetrically arranged on the inner wall surface of the battery box 1. Each battery module 2 is clamped on two sheet metal frames 312, and each sheet metal frame 312 abuts against the first bracket 21 and the second bracket 22 respectively.

[0054] Understandably, the two sheet metal frames 312 symmetrically apply clamping forces to the first bracket 21 and the second bracket 22 on each battery module, replacing the multi-point connectors (multiple locking bolts or other connecting elements) to fix the battery module 2.

[0055] It should be noted that, through the content of this embodiment, screwless fixing of the battery module 2 can be achieved in two opposite directions.

[0056] like Figures 3 to 6 as well as Figure 9 As shown in some embodiments of the battery pack 10, each sheet metal part also includes a support frame 313 and a support bar 314. The support frame 313 is disposed on the inner wall surface of the battery box 1. The support frame 313 is provided with two support steps 3131. An installation groove 3132 is provided between the two support steps 3131. The support bar 314 is disposed in the installation groove 3132. The support frame 313 abuts against one of the battery modules 2, one of the support steps abuts against the first bracket 21, the other support step abuts against the second bracket 22, the support bar 314 is inserted into the contactless annular groove 24, and the support bar 314 abuts against the cell assembly 23.

[0057] Understandably, the support frame 313 can form a stable and reliable limit between the battery box 1 and the battery module 2. Specifically, the two support steps 3131 on the support frame 313 independently constrain the displacement of the first bracket 21 and the second bracket 22, respectively.

[0058] The mounting groove 3132 is used to position and fix the support bar 314, ensuring its precise alignment with the contactless annular groove 24. After the support bar 314 is inserted into the contactless annular groove 24, it abuts against the periphery of the cell assembly 23, limiting the radial movement of the cell assembly 23. Furthermore, a silicone buffer pad can be added between the support bar 314 and the cell assembly 23 to limit the movement of the cell assembly 23.

[0059] like Figure 6 and Figure 9As shown, in some embodiments of the battery pack 10, the support module 3 also includes several silicone pads 32, and there is a mating gap between some sheet metal parts and the battery module 2, with the silicone pads 32 disposed within the mating gap.

[0060] Understandably, the silicone pad 32 fills the gap between the sheet metal part and the battery module 2, absorbing assembly tolerances and thermal expansion and contraction deformation. The silicone pad 32 provides a buffer space, allowing it to undergo elastic deformation to offset impact energy.

[0061] It should be noted that this embodiment utilizes the elastic properties of the silicone pad 32 to eliminate rigid contact between the sheet metal parts and the battery module 2, thereby reducing the vibration transmission rate.

[0062] This utility model also provides an electrical device, which includes a frame, an electrical device and a battery pack 10. The electrical device and the battery pack 10 are respectively disposed on the frame, and the battery pack 10 is electrically connected to the electrical device.

[0063] Understandably, electrical equipment can refer to electrical facilities, electric vehicles, electrical tools, or electrical appliances. For example, it can be applied to electric vehicles, electric forklifts, or other products. Of course, the battery pack 10 is not limited to applications in electrical equipment; it can also be used in energy storage systems.

[0064] like Figures 1 to 6 As shown, the battery box 1 includes a box body 11, a top cover 12, and an electrical cover 13. The top cover 12 and the electrical cover 13 are respectively disposed on the box body 11, so that the box body, the top cover, and the electrical cover together enclose the mounting cavity 14. The battery module 2 and the support module 3 are respectively disposed in the mounting cavity. Each sheet metal part 31 is disposed on the inner wall surface of the mounting cavity 14, and each sheet metal part 31 is respectively supported on the battery module 2.

[0065] It should be noted that the electrical cover 13 is provided with several connectors 131, which are electrically connected to the battery module and are used to connect to external electrical devices to transmit current.

[0066] It should also be noted that in some application scenarios, due to the limited installation space requirements, the electrical cover 13 can be set facing upwards, so that each first bracket 21 and each second bracket 22 will support each other.

[0067] like Figure 7 and Figure 8As shown, in some embodiments of the battery pack 10, the reinforcing plate 213 can be thickened, and a plurality of circular holes 50 can be uniformly formed on the reinforcing plate 213, thereby forming reinforcing ribs 40 on the reinforcing plate 213. Similarly, the surrounding plate 222 can be thickened, and a plurality of uniform circular holes can be formed on the surrounding plate 222, thereby forming reinforcing ribs 40 on the reinforcing plate 213.

[0068] It should be noted that the opening of round holes can improve the weight of the product, and the circular wall profile of the round holes can improve the compressive strength.

[0069] The following are the beneficial effects of implementing this utility model: This utility model relates to a battery pack and an electrical device, wherein the electrical device is equipped with a battery pack. On the battery pack, a first bracket and a second bracket are symmetrically arranged, and reinforcing ribs are respectively provided on the first bracket and the second bracket, thereby forming a frame around the battery cell assembly that only serves to enclose it; at the same time, by supporting modules abutting against each battery module from various directions, the battery modules can be fixed.

[0070] In this way, there is no need to add connectors between the first bracket and the battery box, between the second bracket and the battery box, or between the first bracket and the second bracket. This eliminates the operating space and redundant component space required by traditional locking connections, significantly improving the space adaptability of the battery pack and making it suitable for compact installation sites. It also allows more space in the battery box per unit volume to accommodate the battery cells, thus increasing the energy density of the product.

[0071] Furthermore, when multiple battery modules are configured and stacked within the battery box, the first supports of two adjacent battery modules will support each other, and the second supports of two adjacent battery modules will also support each other. Since each first and second support is equipped with reinforcing ribs, it prevents the first and second supports from being damaged due to excessive load. Simultaneously, the non-contact annular groove design ensures that even when two battery modules are stacked, their respective cell groups will not come into contact, preventing damage to the cell groups and ensuring product durability.

[0072] The present invention has been described in detail above with reference to the accompanying drawings. 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 of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the modules in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0073] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A battery pack, characterized in that, include: Battery box (1); At least one battery module (2), the battery module (2) includes a first bracket (21), a second bracket (22) and a cell assembly (23), the first bracket (21) and the second bracket (22) are both provided with reinforcing ribs (40), the first bracket (21) and the second bracket (22) are symmetrically arranged on the cell assembly (23), the first bracket (21) and the second bracket (22) together form a contactless annular groove (24) in the circumferential direction of the cell assembly (23), and the battery module (2) is disposed in the battery box (1); and The support module (3) includes several sheet metal parts (31), each of which is disposed on the inner wall surface of the battery box (1), and each of which abuts against the first bracket (21) and the second bracket (22).

2. The battery pack according to claim 1, characterized in that, The battery pack includes multiple battery modules (2), each battery module (2) is arranged one by one in the battery box (1) along a straight line, and two adjacent contactless annular grooves (24) are aligned with each other; Every two adjacent first supports (21) abut against each other, and every two adjacent second supports (22) abut against each other.

3. The battery pack according to claim 1 or 2, characterized in that, The first bracket (21) includes a base plate (211), two surrounding plates (212) and two reinforcing plates (213); Two enclosure panels (212) and two reinforcing plates (213) are respectively disposed on the base plate (211), and each enclosure panel (212) and each reinforcing plate (213) are disposed alternately, and each enclosure panel (212) and each reinforcing plate (213) together define a storage groove (214) on the base plate (211). Two enclosure plates (212) are symmetrically arranged on the base plate (211), and two reinforcing plates (213) are symmetrically arranged on the base plate (211). Each reinforcing plate (213) is provided with a reinforcing rib (40). The storage slot (214) is for storing at least a portion of the battery cell assembly (23).

4. The battery pack according to claim 3, characterized in that, The battery pack (23) includes a plurality of battery cells (231); The first bracket (21) also includes several partition plates (215), each partition plate (215) is arranged at intervals in the storage groove (214), thereby defining several storage cavities (2141) in the storage groove (214), each storage cavity (2141) corresponding to a battery cell (231).

5. The battery pack according to claim 4, characterized in that, The second bracket (22) includes a cover plate (221), four surrounding plates (222) and several isolation plates (223). The four surrounding plates (222) are all disposed on the cover plate (221). Two of the surrounding plates (222) are symmetrically arranged with reinforcing ribs (40). The four surrounding plates (222) together enclose a receiving groove (224) on the cover plate (221). Each isolation plate (223) is disposed at intervals in the receiving groove (224), thereby defining multiple receiving cavities (2241) in the receiving groove (224). Each receiving cavity (2241) has a clearance hole (2242) at its bottom. Each of the accommodating cavities (2241) corresponds to and is aligned with each of the receiving cavities (2141), and each of the electrode posts (232) on each of the battery cells (231) is correspondingly inserted into each of the clearance holes (2242).

6. The battery pack according to claim 1, characterized in that, Each of the battery modules (2) further includes a battery cover (25), which is disposed on the second bracket (22). The battery cover (25) covers each electrode post (232) on each of the battery cells (23). Each battery cover (25) has an alignment groove (251). Each of the sheet metal parts (31) includes at least one alignment sheet metal strip (311), each of the alignment sheet metal strips (311) is disposed in the battery box (1), and each of the alignment sheet metal strips (311) is inserted into the alignment groove (251) in a corresponding manner.

7. The battery pack according to claim 1, characterized in that, Each of the sheet metal parts (31) includes two sheet metal frames (312), and the two sheet metal frames (312) are symmetrically arranged on the inner wall surface of the battery box (1); Each of the battery modules (2) is clamped on two sheet metal frames (312), and each sheet metal frame (312) abuts against the first bracket (21) and the second bracket (22).

8. The battery pack according to claim 1 or 7, characterized in that, Each of the sheet metal parts (31) further includes a support frame (313) and a support strip (314). The support frame (313) is disposed on the inner wall of the battery box (1). The support frame (313) is provided with two support steps (3131). A mounting groove (3132) is provided between the two support steps (3131). The support strip (314) is disposed in the mounting groove (3132). The support frame (313) abuts against one of the battery modules (2), one of the support steps abuts against the first bracket (21), the other support step abuts against the second bracket (22), the support bar (314) is inserted into the contactless annular groove (24), and the support bar (314) abuts against the cell assembly (23).

9. The battery pack according to claim 1, characterized in that, The support module (3) also includes several silicone pads (32), and there is a fitting gap between some of the sheet metal parts (31) and the battery module (2), and the silicone pads (32) are disposed in the fitting gap.

10. An electrical appliance, characterized in that, The device includes a frame, an electrical device, and a battery pack as described in any one of claims 1 to 9, wherein the electrical device and the battery pack are respectively disposed on the frame, and the battery pack is electrically connected to the electrical device.

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