Stackable battery pack shell and battery pack

Abstract

The utility model relates to the technical field of batteries, and discloses a stackable battery pack shell and a battery pack, the stackable battery pack shell comprises a shell; the stacking structure comprises a matching groove and a clamping part which are arranged on the two sides of the shell respectively; when the two shells are stacked, the matching groove of one of the shells can be matched with the clamping part of the other shell in an inserting manner; the handle structure is arranged on the shell, the handle structure and the matching groove are located on the same horizontal line, and the projection, in the direction perpendicular to the horizontal line, of the matching groove can cover the projection, in the direction perpendicular to the horizontal line, of the handle structure. The utility model has the advantages that not only can the stacking and carrying requirements of a plurality of battery packs be met, but also the utilization rate of the internal space of the battery packs can be improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a stackable battery pack shell and battery pack. Background Technology

[0002] When a single battery pack cannot meet the voltage, current, or capacity requirements of a target device or system, multiple battery packs are typically combined in series or parallel. Therefore, in scenarios requiring the combined use of multiple battery packs, each battery pack's outer casing is designed with a specialized stacking structure. To balance ease of handling and structural compatibility, stackable battery pack casings feature recessed handles beneath the stacking structure. While this design satisfies the stacking and handling needs of the battery packs, the handles occupy valuable internal space, leading to an increase in the overall size of the battery pack. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a stackable battery pack shell and battery pack that can meet the needs of stacking and handling multiple battery packs and improve the utilization rate of the internal space of the battery pack.

[0004] The technical solution adopted by this utility model to solve its technical problem is a stackable battery pack shell, comprising:

[0005] case;

[0006] A stacking structure, the stacking structure including mating grooves and snap-fit ​​portions respectively provided on both sides of the housing; when two housings are stacked, the mating groove of one housing can form an insertion engagement with the snap-fit ​​portion of the other housing;

[0007] A handle structure is provided on the housing and is on the same horizontal line as the mating groove, and the projection of the mating groove in the direction perpendicular to the horizontal line can cover the projection of the handle structure in the direction perpendicular to the horizontal line.

[0008] Furthermore, the mating groove is recessed longitudinally along the housing and has at least one inclined sidewall, and the handle structure horizontally penetrates the sidewall and communicates with the mating groove.

[0009] Furthermore, the housing includes a box body and a cover. The box body has an opening, and the cover is detachably fitted into the opening and closes the opening. The mating groove is located on the side of the cover away from the box body, and the snap-fit ​​part is located on the side of the box body away from the cover. The shape and size of the snap-fit ​​part are adapted to the mating groove.

[0010] Furthermore, the housing is provided with an isolation section, which divides the internal space of the housing into a first accommodating area and a second accommodating area. The first accommodating area is used to place the mating groove and the handle structure, and the second accommodating area is used to place the battery unit.

[0011] Furthermore, the isolation part is parallel to the shell cover, and the isolation part is provided with a positioning groove, and the shell cover is provided with a positioning block on the side facing the isolation part; when the shell cover is installed at the opening, the positioning block engages with the positioning groove.

[0012] Furthermore, the isolation section also includes a limiting rib extending vertically along the side wall of the housing; when the cover is installed at the opening, the limiting rib abuts against the cover.

[0013] Furthermore, the box body is provided with a limiting groove on the side opposite to the limiting rib, and the cover is provided with a limiting part on the side facing the inside of the box body; when the cover is installed at the opening, the limiting part is engaged with the limiting groove.

[0014] Furthermore, the handle structure is provided in two sets, symmetrically arranged on both sides of the housing, and each set of the handle structure includes a hand-held channel and a through hole. The hand-held channel is horizontally arranged on the housing cover and passes through the side wall to communicate with the mating groove. The through hole is arranged on the box body and passes through the box body. When the housing cover is embedded in the opening, the through hole is aligned with and communicates with the hand-held channel.

[0015] Furthermore, the housing is provided with a reinforcing rib located above the through hole, and the cover also includes a snap-fit ​​groove located above the handheld channel; when the cover is installed at the opening, the reinforcing rib snaps into the snap-fit ​​groove.

[0016] The technical solution adopted by this utility model to solve its technical problem is to provide a battery pack, which includes a battery unit and the aforementioned stackable battery pack shell, wherein the battery unit is detachably built into the stackable battery pack shell.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. In this utility model, by setting a mating groove, a snap-fit ​​part, and a handle structure on the same horizontal line as the mating groove, and ensuring that the projection of the mating groove in the direction perpendicular to the horizontal line covers the projection of the handle structure, the battery pack shell can simultaneously meet the needs of stacking and handling. Furthermore, through the integration and cooperation between the handle structure and the mating groove, interference between the handle structure and the mating groove during stacking is avoided, and the space occupied by the handle structure for battery cell placement is reduced, thus maximizing the utilization rate of the internal space of the battery pack.

[0019] 2. In this utility model, the mating groove is recessed longitudinally along the shell and has at least one inclined sidewall. The handle structure horizontally penetrates the sidewall and communicates with the mating groove, realizing a tight connection between the handle structure and the mating groove. This allows the handle structure and the sidewall of the mating groove to be used as a gripping part during handling, improving the convenience and comfort of the user's grip. When stacked, the handle structure is hidden in the space below the sidewall, which avoids interference with the mating groove and maximizes the space utilization, ensuring the compactness of the overall structure of the battery pack shell.

[0020] 3. In this utility model, the housing is provided with an isolation section parallel to the cover, and the isolation section is provided with a positioning groove. The cover is provided with a positioning block on the side facing the isolation section. When the cover is installed to the opening, the positioning block engages with the positioning groove. This design ensures precise alignment and tight closure between the cover and the housing, ensuring the installation accuracy of the cover. On the other hand, it effectively prevents the cover from shifting or loosening during use, enhancing the stability of the overall structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a stackable battery pack shell according to the present invention.

[0022] Figure 2 This is a structural schematic diagram of a stackable battery pack casing according to this utility model from another perspective.

[0023] Figure 3 for Figure 2 Cross-sectional view at point AA.

[0024] Figure 4 for Figure 2 Cross-sectional view at point BB.

[0025] Figure 5 This is an exploded view of a stackable battery pack casing according to the present invention.

[0026] Figure 6 This is a schematic diagram of the structure of a battery pack according to the present invention.

[0027] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0028] 100. Housing; 101. Top cover; 102. Base; 110. Opening; 120. Isolation part; 121. Positioning groove; 122. Limiting rib; 130. Limiting groove; 140. Reinforcing rib; 200. Shell cover; 210. Positioning block; 220. Limiting part; 230. Snap-fit ​​groove; 300. Stacking structure; 310. Mating groove; 311. Side wall; 320. Snap-fit ​​part; 400. Handle structure; 410. Handheld channel; 420. Through hole; 500. Battery unit. Detailed Implementation

[0029] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] like Figures 1 to 5 As shown, in this embodiment, a stackable battery pack housing includes:

[0035] case;

[0036] The stacked structure 300 includes mating grooves 310 and snap-fit ​​portions 320 respectively provided on both sides of the housing; when the two housings are stacked, the mating groove 310 of one housing can form an insertion engagement with the snap-fit ​​portion 320 of the other housing.

[0037] The handle structure 400 is mounted on the housing and is on the same horizontal line as the mating groove 310. The projection of the mating groove 310 in the direction perpendicular to the horizontal line can cover the projection of the handle structure 400 in the direction perpendicular to the horizontal line. This design allows the battery pack housing to meet the needs of stacking and handling simultaneously. Through the integration and mating of the handle structure 400 and the mating groove 310, interference between the handle structure 400 and the mating groove 310 during stacking is avoided, and the space occupied by the handle structure 400 for placing the battery cells 500 is reduced, thereby maximizing the utilization of the internal space of the battery pack.

[0038] Specifically, such as Figures 1 to 5 As shown, in this embodiment, the battery pack outer shell mainly includes a shell, a stacking structure 300, and a handle structure 400, which can simultaneously meet the stacking and handling requirements of the battery pack.

[0039] In this embodiment, the housing includes a casing 100 and a cover 200. The casing 100 is a hollow structure used to house the battery unit 500, and its top has an opening 110 for communicating between the inside and outside of the casing 100. This design, through the separate design of the casing 100 and the cover 200, improves the convenience of casing production and maintenance.

[0040] Preferably, in this embodiment, the cover 200 is detachably fitted into the opening 110 by fasteners, thus closing the opening 110. This design improves the ease of installation and removal of the cover 200, while simplifying the process of replacing the battery unit 500 or inspecting internal components, reducing maintenance costs and difficulty.

[0041] In this embodiment, an isolation section 120 is provided at the upper end of the housing 100, which divides the internal space of the housing 100 into a first accommodating area and a second accommodating area that are layered and independent. The first accommodating area is used to house the mating groove 310 and the handle structure 400, while the second accommodating area is used to house the battery unit 500. This design achieves modular functional partitioning. On the one hand, it centrally arranges stacking and handling-related components such as the mating groove 310 and the handle structure 400 in one area, optimizing space utilization and facilitating maintenance and upgrades. On the other hand, it separates the battery unit 500 from other components, ensuring that the battery unit 500 is not interfered with by other components, thus improving the overall stability and safety of the battery pack. Furthermore, through reasonable functional partitioning and compact layout, it minimizes space waste between components, improving the energy density and efficiency of the battery pack. In addition, this separation design also helps with heat dissipation management and extends battery life.

[0042] In this embodiment, the isolation part 120 is vertically connected to the upper part of the housing 100 and extends horizontally, parallel to the cover 200. The isolation part 120 is provided with a positioning groove 121. When the cover 200 is installed at the opening 110, the positioning groove 121 engages with the positioning block 210 on the cover 200. This design ensures precise alignment and tight closure between the cover 200 and the housing 100, guaranteeing the installation accuracy of the cover 200. Furthermore, it effectively prevents displacement or loosening of the cover 200 during use, enhancing the overall structural stability.

[0043] Preferably, in this embodiment, the positioning groove 121 is arranged horizontally and located on the extension end of the isolation part 120. By engaging with the positioning block 210, it not only supports the middle part of the shell cover 200, preventing the middle part of the shell cover 200 from sinking or deforming during stacking, but also transmits the external force borne by the shell cover 200 to the side wall 311 of the box body 100, thereby dispersing the pressure and effectively enhancing the stability and rigidity of the overall structure.

[0044] In this embodiment, the isolation part 120 further includes a limiting rib 122 extending vertically along the side wall 311 of the housing 100. Preferably, multiple limiting ribs 122 are provided and arranged laterally along the side wall 311 of the housing 100. When the cover 200 is installed at the opening 110, the limiting rib 122 abuts against the cover 200. This design uses the limiting rib 122 to support one side of the cover 200, preventing the side of the cover 200 from sinking or deforming during stacking, further improving the strength of the housing, and also avoiding excessive gaps between the cover 200 and the housing 100.

[0045] In this embodiment, a limiting groove 130 is also provided on the side of the housing 100 opposite to the limiting rib 122, with the opening 110 of the limiting groove 130 facing upwards. When the cover 200 is installed at the opening 110, the limiting part 220 of the cover 200 can be engaged into the limiting groove 130. This design, through the engaging cooperation between the limiting part 220 and the limiting groove 130, supports the other side of the cover 200, preventing the other side of the cover 200 from sinking or deforming during stacking, further improving the strength of the housing, and also avoiding excessive gaps between the cover 200 and the housing 100.

[0046] In this embodiment, the positioning groove 121 and the positioning block 210 are engaged, the limiting rib 122 and the shell cover 200 are abutted, and the limiting groove 130 and the limiting part 220 are engaged, so that the box body 100 can achieve multi-point support for the shell cover 200, which significantly improves the overall strength of the shell and the stability of use.

[0047] In this embodiment, the size and shape of the cover 200 are adapted to the size and shape of the opening 110. The cover 200 has a positioning block 210 on the side facing the isolation portion 120. This positioning block 210 is C-shaped, extending vertically downwards along the inner wall of the cover 200 before bending towards the positioning groove 121. When the cover 200 is installed at the opening 110, the bent portion of the positioning block 210 engages with the positioning groove 121, achieving a snap-fit ​​connection between the cover 200 and the isolation portion 120.

[0048] In this embodiment, a limiting part 220 is provided on one side of the cover 200 facing the inside of the box 100. The limiting part 220 extends in the vertical direction. When the cover 200 is installed at the opening 110, the limiting part 220 is inserted into the limiting groove 130 and abuts against the side wall 311 of the box 100.

[0049] To improve the ease of installation of the cover 200, in this embodiment, the housing 100 includes a base 102 and a top cover 101 that are detachably connected by fasteners. When assembling the battery pack housing, the cover 200 is first horizontally inserted into the opening 110 of the base 102 and secured with fasteners. Then, the top cover 101 is placed on top of the base 102 and secured with fasteners. This design effectively improves the ease of disassembly, assembly, and maintenance of the battery pack housing.

[0050] To meet the stacking requirements of battery packs, in this embodiment, the stacking structure 300 includes mating grooves 310 and snap-fit ​​portions 320 respectively disposed on the upper and lower sides of the housing. When the housings of two battery packs are stacked, the mating groove 310 of one housing can form a plug-in engagement with the snap-fit ​​portion 320 of the other housing. This design ensures a stable connection of multiple battery packs when stacked, preventing the battery packs from sliding or falling off due to vibration or external forces.

[0051] In this embodiment, the mating groove 310 is located on the side of the cover 200 away from the housing 100, and the snap-fit ​​part 320 is located on the side of the housing 100 away from the cover 200, and the shape and size of the snap-fit ​​part 320 are adapted to the mating groove 310. This adaptive design ensures that quick and accurate docking can be achieved during stacking, reducing installation time and errors.

[0052] In this embodiment, the length of the mating groove 310 is adapted to the length of the cover 200, and it is recessed longitudinally along the cover 200 and has at least one inclined sidewall 311. This design can meet the snap-fit ​​requirements when stacking battery packs, and also provides additional space for the installation of the handle structure 400, so that the handle structure 400 can horizontally penetrate the sidewall 311 and communicate with the mating groove 310, avoiding interference with the mating groove 310 and achieving a compact integrated design.

[0053] It is worth noting that the recessed design of the mating groove 310 allows it to be embedded in the first receiving area of ​​the housing 100 with the handle structure 400, thereby maximizing the utilization of the internal space of the housing 100.

[0054] Preferably, in this embodiment, there are two sidewalls 311, arranged symmetrically on the left and right, and the top of the sidewalls 311 slopes from the inside to the outside. This design can accommodate two sets of handle structures 400, which not only improves the stability when the battery pack is stacked, but also improves the convenience of handling the battery pack.

[0055] To facilitate the handling of the battery pack, in this embodiment, a handle structure 400 is provided on the housing. The handle structure 400 and the mating groove 310 are on the same horizontal line, and the projection of the mating groove 310 in the direction perpendicular to the horizontal line covers the projections of the handle structure 400 in both the vertical and horizontal directions. Because the handle structure 400 and the mating groove 310 are on the same horizontal line, the handle structure 400 avoids occupying space for the battery unit 500. Furthermore, the covering design of the mating groove 310's projection allows the handle structure 400 and the mating groove 310 to share a space, saving the handle structure 400 from occupying external lateral space and avoiding interference with the mating groove 310.

[0056] In this embodiment, the handle structure 400 horizontally penetrates the side wall 311 and communicates with the mating groove 310, realizing a tight connection between the handle structure 400 and the mating groove 310. This allows the side wall 311 of the handle structure 400 and the mating groove 310 to be used as a gripping part during handling, improving the convenience and comfort of the user's grip. When stacked, the handle structure 400 is hidden in the space below the side wall 311, which avoids interference with the mating groove 310 and maximizes the space utilization, ensuring the compactness of the overall structure of the battery pack casing.

[0057] In this embodiment, the handle structure 400 is provided in two sets, symmetrically arranged on the left and right sides of the housing. This design ensures the balance and stability of the battery pack during transportation, reducing the risk of tilting or falling due to uneven force on one side.

[0058] In this embodiment, each handle structure 400 includes a hand-held channel 410 and a through hole 420. The hand-held channel 410 is horizontally disposed below the inclined end of the side wall 311 and penetrates the side wall 311 to communicate with the mating groove 310. The through hole 420 is disposed on the side wall 311 of the housing 100 and penetrates the side wall 311 of the housing 100. When the cover 200 is fitted into the opening 110, the through hole 420 is aligned with and communicates with the hand-held channel 410. This design allows the user's hand to naturally reach into the hand-held channel 410 from below the inclined side wall 311 when carrying the battery pack. This design is likely more ergonomic and improves grip comfort. At the same time, the hand-held channel 410 penetrates the side wall 311 and communicates with the mating groove 310, allowing the hand-held channel 410 to be hidden on the side of the mating groove 310 when stacked, avoiding interference.

[0059] Preferably, the handheld channel 410 is in the shape of a rectangular pipe, and the through hole 420 is rectangular, with its inner diameter matching the inner diameter of the handheld channel 410.

[0060] To improve the connection strength between the handle structure 400 and the cover 200 and the housing 100, in this embodiment, the housing 100 is further provided with a reinforcing rib 140 located above the through hole 420, and the cover 200 also includes a snap-fit ​​groove 230 located above the hand-held channel 410; when the cover 200 is installed at the opening 110, the reinforcing rib 140 snaps into the snap-fit ​​groove 230. This design, through the cooperation of the reinforcing rib 140 and the snap-fit ​​groove 230, can transfer the gripping load along the side wall 311 of the housing 100 to the bottom support surface, avoiding stress concentration at the edges of the through hole 420 and the hand-held channel 410; furthermore, the reinforcing rib 140, after snapping into the snap-fit ​​groove 230, can form a longitudinal constraint, significantly improving the strength of the connection between the cover 200 and the housing 100.

[0061] like Figures 1 to 6 As shown, this embodiment of the invention also provides a battery pack, which includes a battery unit 500 and the aforementioned stackable battery pack housing, wherein the battery unit 500 is detachably housed within the stackable battery pack housing. This design effectively maximizes the utilization of the internal space of the battery pack and improves the convenience of disassembling, assembling, and maintaining the battery unit 500.

Claims

1. A stackable battery pack enclosure, characterized by, The utility model relates to a battery pack, including: a shell; a stacking structure (300) including a matching groove (310) and a clamping part (320) respectively arranged on both sides of the shell; when two shells are stacked, the matching groove (310) of one of the shells can be inserted into the clamping part (320) of the other shell; a handle structure (400) arranged on the shell and in the same horizontal line as the matching groove (310), and the projection of the matching groove (310) in the vertical direction of the horizontal line can cover the projection of the handle structure (400) in the vertical direction of the horizontal line.

2. The stackable battery pack enclosure of claim 1, wherein, The matching groove (310) is longitudinally recessed along the shell and has at least one obliquely arranged side wall (311), and the handle structure (400) horizontally penetrates the side wall (311) and communicates with the matching groove (310).

3. The stackable battery pack enclosure of claim 2, wherein, The shell includes a box body (100) having an opening (110) and a shell cover (200) detachably embedded at the opening (110) and forming a seal for the opening (110), the matching groove (310) is arranged on the side of the shell cover (200) away from the box body (100), the clamping part (320) is arranged on the side of the box body (100) away from the shell cover (200), and the shape and size of the clamping part (320) are adapted to those of the matching groove (310).

4. The stackable battery pack enclosure of claim 3, wherein, The box body (100) is provided with a partition (120) that divides the internal space of the box body (100) into a first accommodation area and a second accommodation area, the first accommodation area is used for placing the matching groove (310) and the handle structure (400), and the second accommodation area is used for placing a battery unit (500).

5. The stackable battery pack enclosure of claim 4, wherein, The partition (120) is parallel to the shell cover (200), and the partition (120) is provided with a positioning groove (121), and the side of the shell cover (200) facing the partition (120) is provided with a positioning block (210); when the shell cover (200) is installed at the opening (110), the positioning block (210) is clamped with the positioning groove (121).

6. The stackable battery pack enclosure of claim 4, wherein, The partition (120) further includes a limiting rib (122) vertically extending along the side wall (311) of the box body (100); when the shell cover (200) is installed at the opening (110), the limiting rib (122) abuts against the shell cover (200).

7. The stackable battery pack enclosure of claim 6, wherein, The side of the box body (100) opposite to the limiting rib (122) is further provided with a limiting groove (130), and the side of the shell cover (200) facing the inside of the box body (100) is further provided with a limiting part (220); when the shell cover (200) is installed at the opening (110), the limiting part (220) is clamped into the limiting groove (130).

8. The stackable battery pack enclosure of claim 4, wherein, The handle structure (400) is provided with two groups, which are symmetrically arranged on two sides of the shell, and each group of the handle structure (400) comprises a hand holding channel (410) and a through hole (420), the hand holding channel (410) is horizontally arranged on the shell cover (200) and communicates with the matching groove (310) through the side wall (311), and the through hole (420) is arranged on the box body (100) and penetrates the box body (100); when the shell cover (200) is embedded at the opening (110), the through hole (420) is aligned and communicated with the hand holding channel (410).

9. The stackable battery pack enclosure of claim 8, wherein, The box body (100) is further provided with a reinforcing rib (140) above the through hole (420), and the shell cover (200) further comprises a clamping groove (230) above the hand holding channel (410); when the shell cover (200) is installed at the opening (110), the reinforcing rib (140) is clamped into the clamping groove (230).

10. A battery pack, characterized by, A battery cell (500) and the stackable battery pack shell of any one of claims 1 to 9, the battery cell (500) is detachably built into the stackable battery pack shell.

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