Bms holder for portable battery device and portable battery device
By merging the BMS bracket with the waterproof structure to form a glued waterproof groove, the problems of numerous parts, complex structure, and high cost of portable battery devices are solved, achieving a balance between simplified assembly and improved waterproof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN CHUANGZHIMEI TECH CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-02
Smart Images
Figure CN224318636U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, and in particular to a BMS bracket for a portable battery device and a portable battery device. Background Technology
[0002] A current portable battery device includes a battery module, a BMS bracket, a BMS module, a lower cylinder, and a top cover. The BMS bracket is fixedly placed on top of the battery module, the BMS module is mounted on the BMS bracket, the lower cylinder is fitted over the battery module and the BMS bracket, and the top cover is fixed to the upper opening of the lower cylinder. Furthermore, to achieve a waterproof seal, a dedicated waterproof structure is required for applying adhesive to prevent external liquids from entering the battery device through the top cover and other components. Therefore, this type of portable battery device requires both a dedicated BMS bracket and a dedicated waterproof structure, resulting in a large number of parts, a complex structure, high cost, and cumbersome assembly. Assembly also carries risks of wire compression and safety hazards. Additionally, the waterproof structure is prone to deformation, leading to uneven application of the waterproof adhesive, poor consistency in waterproofing performance, and a high defect rate. Utility Model Content
[0003] The purpose of this utility model is to provide a BMS bracket for a portable battery device and a portable battery device, which can solve at least one technical problem in the background art.
[0004] To achieve the above objectives, this utility model provides a BMS bracket for a portable battery device. The BMS bracket is configured to be fixedly placed on the upper end of a battery module. The upper side of the BMS bracket has a BMS module mounting area. A sidewall is formed on the outer side of the BMS bracket. The sidewall protrudes outward to form a ring of outward protrusions. The upper surface of the outward protrusions is lower than the upper surface of the sidewall. The portion of the sidewall extending upward beyond the outward protrusions is defined as the upper part of the sidewall. The outward protrusions are configured to fit into the inner wall of a lower cylinder sleeved on the outside of the battery module and the BMS bracket, so that the upper part of the sidewall, the upper surface of the outward protrusions, and the portion of the inner wall of the lower cylinder facing the upper part of the sidewall define a ring of adhesive waterproof groove.
[0005] Optionally, the BMS support is an integrated structure.
[0006] Optionally, the protrusion is an external boss that is generally close to the upper surface of the sidewall.
[0007] To achieve the above objectives, this utility model also provides a portable battery device, including a battery module, a BMS bracket, a lower cylinder, and an upper cover. The BMS bracket is fixedly placed on the upper end of the battery module. The upper side of the BMS bracket forms a BMS module mounting area. A sidewall is formed on the outer side of the BMS bracket, and the sidewall protrudes outward to form a ring of outward protrusions. The upper surface of the outward protrusions is lower than the upper surface of the sidewall, and the portion of the sidewall extending upward beyond the outward protrusions is defined as the upper part of the sidewall. The BMS module is installed in the BMS module mounting area of the BMS bracket. The lower cylinder is sleeved on the outside of the battery module and the BMS bracket. The outward protrusions are adapted to the inner wall of the lower cylinder. The upper part of the sidewall, the upper surface of the outward protrusions, and the portion of the inner wall of the lower cylinder facing the upper part of the sidewall define a ring of waterproof groove, and a ring of waterproof adhesive is provided at the waterproof groove. The upper cover is fixedly placed over the upper opening of the lower cylinder.
[0008] Optionally, the upper cover includes a cover plate portion and a ring of side plates extending downward from the outer edge of the cover plate portion. The side plates extend into the inner side of the lower cylinder, and the bottom of the side plates extends into the adhesive waterproof groove and is bonded to the waterproof adhesive.
[0009] Optionally, the side plate portion is connected to the outer edge of the cover plate portion via a connecting portion, the side plate portion is offset inward relative to the connecting portion, and the bottom surface of the connecting portion is supported on the opening end face of the lower cylinder.
[0010] Optionally, the battery module includes a first module and a second module. The first module includes a first upper bracket, a first lower bracket, and a first battery array formed by a matrix arrangement of a plurality of first cylindrical batteries. The first ends of the plurality of first cylindrical batteries are mounted on the first upper bracket, and the second ends of the plurality of first cylindrical batteries are mounted on the first lower bracket. The second module includes a second upper bracket, a second lower bracket, and a second battery array formed by a matrix arrangement of a plurality of second cylindrical batteries. The first ends of the plurality of second cylindrical batteries are mounted on the second upper bracket, and the second ends of the plurality of second cylindrical batteries are mounted on the second lower bracket. The first lower bracket is fixedly mounted on the second upper bracket.
[0011] Optionally, the first upper support includes a first upper support body and a plurality of first upper side feet extending downward from the outer edge of the first upper support body; the first lower support includes a first lower support body and a plurality of first lower side feet extending upward from the outer edge of the first lower support body; the plurality of first upper side feet and the plurality of first lower side feet are correspondingly engaged; the second upper support includes a second upper support body and a plurality of second upper side feet extending downward from the outer edge of the second upper support body; the second lower support includes a second lower support body and a plurality of second lower side feet extending upward from the outer edge of the second lower support body; the plurality of second upper side feet and the plurality of second lower side feet are correspondingly engaged and are respectively vertically opposite to the plurality of first upper side feet and the plurality of first lower side feet; a cushioning pad is attached to the outer surface of each set of vertically opposite first upper side feet, first lower side feet, second upper side feet and second lower side feet.
[0012] Optionally, a plurality of screws pass through the BMS bracket, the first upper bracket, the first lower bracket, the second upper bracket, and the second lower bracket in sequence to lock the BMS bracket, the first upper bracket, the first lower bracket, the second upper bracket, and the second lower bracket together.
[0013] Optionally, the cover plate is provided with a charging interface, a discharging interface, and a handle bracket. A ring of sealant is applied around the charging interface, the discharging interface, and the handle bracket on the inner side of the cover plate to form a ring of sealant. Each ring of sealant seals the gap between the charging interface, the discharging interface, the handle bracket, and the cover plate.
[0014] In this embodiment of the invention, in addition to the BMS module mounting area, the BMS bracket also features a protruding portion extending outward from one of its sidewalls. The upper surface of the protruding portion is lower than the upper surface of the sidewall. This protruding portion is configured to fit the inner wall of the lower cylinder, which is fitted over the battery module and the BMS bracket. This creates a sealing and waterproof groove defined by the upper part of the sidewall, the upper surface of the protruding portion, and the portion of the lower cylinder's inner wall facing the upper part of the sidewall. Therefore, in this embodiment, the BMS bracket and waterproof bracket, originally designed for assembling the BMS module, are combined into one unit. The BMS bracket in this embodiment is sufficient for assembling the BMS module and forming a sealing and waterproof groove with the inner wall of the lower cylinder. This eliminates the need for separate BMS brackets and waterproof brackets, reducing the number of parts and molds, and lowering structural complexity, assembly cumbersomeness, and product cost. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the BMS bracket according to an embodiment of the present invention.
[0016] Figure 2 This is a three-dimensional structural diagram of the BMS bracket assembled onto the battery module according to an embodiment of the present invention.
[0017] Figure 3 yes Figure 2 A three-dimensional structural diagram of the assembly of the middle component into the lower cylinder.
[0018] Figure 4 yes Figure 3 Enlarged view of part A in the middle.
[0019] Figure 5 yes Figure 3 A schematic diagram of the three-dimensional structure of the assembly after it has been glued in the waterproof glue-applying tank.
[0020] Figure 6 yes Figure 5 Enlarged view of section B in the middle.
[0021] Figure 7 This is a three-dimensional structural diagram of the portable battery device according to an embodiment of the present invention.
[0022] Figure 8 This is a cross-sectional structural diagram of the portable battery device according to an embodiment of the present invention.
[0023] Figure 9 yes Figure 8 Enlarged view of section C.
[0024] Figure 10 This is a three-dimensional structural diagram of the upper cover and structural components on the upper cover according to an embodiment of the present utility model. Detailed Implementation
[0025] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0027] Example 1
[0028] Please see Figures 1 to 10This embodiment discloses a BMS bracket 1 for a portable battery device. The BMS bracket 1 is configured to be fixedly placed on the upper end of a battery module. The upper side of the BMS bracket 1 forms a BMS module mounting area 10. A sidewall 11 is formed on the outer side of the BMS bracket 1. The sidewall 11 protrudes outward to form a ring of protruding portions 12. The upper surface 120 of the protruding portions 12 is lower than the upper surface 110 of the sidewall 11. The portion of the sidewall 11 that extends upward beyond the protruding portions 12 is defined as the upper portion 111 of the sidewall. The protruding portions 12 are configured to fit with the inner wall 31 of the lower cylinder 3 sleeved on the outside of the battery module and the BMS bracket 1, so that the upper portion 111 of the sidewall, the upper surface 120 of the protruding portions 12, and the portion of the inner wall 31 of the lower cylinder 3 facing the upper portion 111 of the sidewall define a ring of adhesive waterproof groove H.
[0029] In this embodiment, in addition to the BMS module mounting area 10 for mounting the BMS module 2, the BMS bracket 1 also has an outwardly protruding portion 12 protruding from its sidewall 11. The upper surface 120 of the outwardly protruding portion 12 is lower than the upper surface 110 of the sidewall 11. The outwardly protruding portion 12 is configured to fit the inner wall 31 of the lower cylinder 3, which is sleeved on the outside of the battery module and the BMS bracket 1. This allows the upper part 111 of the sidewall, the upper surface 120 of the outwardly protruding portion 12, and the portion of the inner wall 31 of the lower cylinder 3 facing the upper part 111 of the sidewall to define a waterproof groove H. Therefore, in this embodiment, the BMS bracket and waterproof bracket, which were originally specifically used for assembling the BMS module, are combined into one. The assembly of the BMS module 2 and the formation of the waterproof groove H with the inner wall 31 of the lower cylinder 3 can be achieved using only the BMS bracket 1 in this embodiment. This eliminates the need for separate BMS brackets and waterproof brackets, reducing the number of parts and molds, lowering structural complexity, assembly cumbersomeness, and product cost. Furthermore, the simplified assembly reduces installation risks and the risk of wire damage. Additionally, the combined components help avoid uneven application of the waterproof adhesive caused by the deformation of independent waterproof brackets, thus improving the consistency of the waterproof effect and increasing the product's waterproof yield.
[0030] Specifically, the BMS support 1 is an integrated structure.
[0031] Specifically, the protrusion 12 is an external protrusion that is close to the upper surface 110 of the side wall 11. Of course, it is not limited to this, as long as the upper part 111 of the side wall, the upper surface 120 of the protrusion 12, and the portion of the inner wall 31 of the lower cylinder 3 facing the upper part 111 of the side wall can define a ring of sealant waterproof groove H.
[0032] Specifically, the BMS bracket 1 is fixedly connected to the battery module bracket by several screws L1.
[0033] Specifically, the BMS module 2 is fixed to the BMS bracket 1 by fastener L2. Fastener L2 can be a screw, etc.
[0034] Example 2
[0035] Please see Figures 1 to 10 This embodiment discloses a portable battery device, including a battery module, a BMS bracket 1, a BMS module 2, a lower cylinder 3, and an upper cover 4. The BMS bracket 1 is fixedly placed on the upper end of the battery module. A BMS module mounting area 10 is formed on the upper side of the BMS bracket 1. A sidewall 11 is formed on the outer side of the BMS bracket 1. The sidewall 11 protrudes outward to form a ring of outward protrusions 12. The upper surface 120 of the outward protrusions 12 is lower than the upper surface 110 of the sidewall 11. The sidewall 11 extends upward beyond the outward protrusions 12. The upper part of the side wall is defined as 111; the BMS module 2 is installed in the BMS module mounting area 10 of the BMS bracket 1; the lower cylinder 3 is sleeved on the outside of the battery module and the BMS bracket 1, the protrusion 12 is adapted to the inner wall 31 of the lower cylinder 3, and the upper part of the side wall 111, the upper surface 120 of the protrusion 12 and the part of the inner wall 31 of the lower cylinder 3 facing the upper part of the side wall 111 define a ring of waterproof sealant groove H, and a ring of waterproof sealant 5 is provided at the waterproof sealant groove H; the upper cover 4 is fixed to the upper opening of the lower cylinder 3.
[0036] In this embodiment, in addition to the BMS module mounting area 10 for mounting the BMS module 2, the BMS bracket 1 also has an outwardly protruding portion 12 protruding from its sidewall 11. The upper surface 120 of the outwardly protruding portion 12 is lower than the upper surface 110 of the sidewall 11. The outwardly protruding portion 12 is adapted to the inner wall 31 of the lower cylinder 3, which is sleeved on the outside of the battery module and the BMS bracket 1. This allows the upper part 111 of the sidewall, the upper surface 120 of the outwardly protruding portion 12, and the portion of the inner wall 31 of the lower cylinder 3 facing the upper part 111 of the sidewall to define a waterproof groove H. Thus, in this embodiment, the BMS bracket and waterproof bracket, which were originally used specifically for assembling the BMS module, are combined into one. Only the BMS bracket 1 in this embodiment is needed to assemble the BMS module 2 and form the waterproof groove H together with the inner wall 31 of the lower cylinder 3. There is no need to set up separate BMS brackets and waterproof brackets, which reduces the number of parts and molds, and reduces structural complexity, assembly cumbersomeness, and product cost. Furthermore, the simplified assembly reduces installation risks and the risk of wire damage. Additionally, the combined components help avoid uneven application of the waterproof adhesive caused by the deformation of independent waterproof brackets, thus improving the consistency of the waterproof effect and increasing the product's waterproof yield.
[0037] Specifically, the BMS support 1 is an integrated structure.
[0038] Specifically, the protrusion 12 is an external protrusion that is close to the upper surface of the side wall 11. Of course, it is not limited to this, as long as the upper part of the side wall 111, the upper surface 120 of the protrusion 12, and the portion of the inner wall 31 of the lower cylinder 3 facing the upper part of the side wall 111 can define a ring of sealant waterproof groove H.
[0039] Specifically, the BMS bracket 1 is fixedly connected to the battery module bracket by several screws L1.
[0040] Specifically, the BMS module 2 is fixed to the BMS bracket 1 by fastener L2. The fastener can be a screw, etc.
[0041] In some embodiments, the upper cover 4 includes a cover plate portion 41 and a ring of side plates 42 extending downward from the outer edge of the cover plate portion 41. The side plates 42 extend into the inner side of the lower cylinder 3, and the bottom of the side plates 42 extends into the waterproof sealant groove H and is bonded to the waterproof sealant 5. Because the bottom of the side plates 42 extends into the waterproof sealant groove H and is bonded to the waterproof sealant 5, a better waterproof sealing effect can be achieved.
[0042] Specifically, the side plate portion 42 is connected to the outer edge of the cover plate portion 41 via the connecting portion 43. The side plate portion 42 is offset inward relative to the connecting portion 43, and the bottom surface 431 of the connecting portion 43 is supported on the open end face 32 of the lower cylinder 3.
[0043] Specifically, the lower cylinder 3 and the side plate portion 42 of the upper cover 4 are fixedly connected by screws L3.
[0044] In some embodiments, the battery module includes a first module 6 and a second module 7. The first module 6 includes a first upper bracket 61, a first lower bracket 62, and a first battery array 63 formed by a matrix arrangement of a plurality of first cylindrical batteries 631. The first ends of the plurality of first cylindrical batteries 631 are mounted on the first upper bracket 61, and the second ends of the plurality of first cylindrical batteries 631 are mounted on the first lower bracket 62. The second module 7 includes a second upper bracket 71, a second lower bracket 72, and a second battery array 73 formed by a matrix arrangement of a plurality of second cylindrical batteries 731. The first ends of the plurality of second cylindrical batteries 731 are mounted on the second upper bracket 71, and the second ends of the plurality of second cylindrical batteries 731 are mounted on the second lower bracket 72. The first lower bracket 62 is fixedly mounted on the second upper bracket 71.
[0045] Specifically, the first upper support 61 includes a first upper support body 611 and a plurality of first upper side feet 612 extending downward from the outer edge of the first upper support body 611; the first lower support 62 includes a first lower support body 621 and a plurality of first lower side feet 622 extending upward from the outer edge of the first lower support body 621; the plurality of first upper side feet 612 and the plurality of first lower side feet 622 are correspondingly engaged; the second upper support 71 includes a second upper support body 711 and a plurality of second upper side feet 622 extending downward from the outer edge of the second upper support body 711. The upper foot 712 and the second lower support 72 include a second lower support body 721 and a plurality of second lower feet 722 extending upward from the outer edge of the second lower support body 721. The plurality of second upper feet 712 and the plurality of second lower feet 722 are correspondingly engaged and are respectively vertically opposite to the plurality of first upper feet 612 and the plurality of first lower feet 622. A cushioning pad 8 is attached to the outer surface of each set of vertically opposite first upper feet 612, first lower feet 622, second upper feet 712 and second lower feet 722.
[0046] Furthermore, the cushioning pad 8 is made of rubber, but this is not a limitation.
[0047] Specifically, a number of screws L1 pass through the BMS bracket 1, the first upper bracket 61, the first lower bracket 62, the second upper bracket 71, and the second lower bracket 72 in sequence to lock the BMS bracket 1, the first upper bracket 61, the first lower bracket 62, the second upper bracket 71, and the second lower bracket 72 together.
[0048] Specifically, the cover plate 41 is provided with a charging port 91, a discharging port 92, and a handle bracket 93. A ring of sealant 94 is applied around the charging port 91, discharging port 92, and handle bracket 93 on the inner side of the cover plate 41, sealing the gaps between the charging port 91, discharging port 92, and handle bracket 93 and the cover plate 41. Because each ring of sealant 94 seals the gaps between the charging port 91, discharging port 92, and handle bracket 93 and the cover plate 41, a strong waterproof seal is ensured.
[0049] Specifically, the lower cylinder 3 is a metal cylinder.
[0050] The above-disclosed examples are merely preferred embodiments of the present utility model, intended to facilitate understanding and implementation by those skilled in the art. They should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model are still within the scope of the present utility model.
Claims
1. A BMS holder for a portable battery device, characterized by, The BMS bracket is configured to be fixedly placed on the upper end of the battery module. The upper side of the BMS bracket has a BMS module mounting area. A sidewall is formed on the outer side of the BMS bracket. The sidewall protrudes outward to form a ring of outward protrusions. The upper surface of the outward protrusions is lower than the upper surface of the sidewall. The portion of the sidewall that extends upward beyond the outward protrusions is defined as the upper part of the sidewall. The outward protrusions are configured to fit the inner wall of the lower cylinder sleeved on the outside of the battery module and the BMS bracket, so that the upper part of the sidewall, the upper surface of the outward protrusions, and the portion of the inner wall of the lower cylinder facing the upper part of the sidewall define a ring of sealant waterproof groove.
2. The BMS holder for a portable battery device according to claim 1, characterized by, The BMS support is an integrated structure.
3. The BMS holder for a portable battery device according to claim 1, characterized by, The protrusion is an external boss that is close to the upper surface of the sidewall.
4. A portable battery device characterized by comprising: The system includes a battery module, a BMS bracket, a lower cylinder, and an upper cover. The BMS bracket is fixedly placed on top of the battery module. The upper side of the BMS bracket forms a BMS module mounting area. A sidewall is formed on the outer side of the BMS bracket, and the sidewall protrudes outward to form a ring of outward protrusions. The upper surface of the outward protrusions is lower than the upper surface of the sidewall, and the portion of the sidewall extending upward beyond the outward protrusions is defined as the upper part of the sidewall. The BMS module is installed in the BMS module mounting area of the BMS bracket. The lower cylinder is sleeved on the outside of the battery module and the BMS bracket. The outward protrusions are adapted to the inner wall of the lower cylinder. The upper part of the sidewall, the upper surface of the outward protrusions, and the portion of the inner wall of the lower cylinder facing the upper part of the sidewall define a ring of waterproof sealant groove, and a ring of waterproof sealant is provided at the waterproof sealant groove. The upper cover is fixedly placed over the upper opening of the lower cylinder.
5. The portable battery device of claim 4, wherein, The upper cover includes a cover plate portion and a ring of side plates extending downward from the outer edge of the cover plate portion. The side plates extend into the inner side of the lower cylinder, and the bottom of the side plates extends into the adhesive waterproof groove and is bonded to the waterproof adhesive.
6. The portable battery device of claim 5, wherein, The side plate is connected to the outer edge of the cover plate via a connecting part. The side plate is offset inward relative to the connecting part, and the bottom surface of the connecting part is supported by the opening end face of the lower cylinder.
7. The portable battery device of claim 4, wherein, The battery module includes a first module and a second module. The first module includes a first upper bracket, a first lower bracket, and a first battery array formed by a matrix arrangement of a plurality of first cylindrical batteries. The first ends of the plurality of first cylindrical batteries are mounted on the first upper bracket, and the second ends of the plurality of first cylindrical batteries are mounted on the first lower bracket. The second module includes a second upper bracket, a second lower bracket, and a second battery array formed by a matrix arrangement of a plurality of second cylindrical batteries. The first ends of the plurality of second cylindrical batteries are mounted on the second upper bracket, and the second ends of the plurality of second cylindrical batteries are mounted on the second lower bracket. The first lower bracket is fixedly mounted on the second upper bracket.
8. The portable battery device of claim 7, wherein, The first upper support includes a first upper support body and a plurality of first upper side feet extending downward from the outer edge of the first upper support body. The first lower support includes a first lower support body and a plurality of first lower side feet extending upward from the outer edge of the first lower support body. The plurality of first upper side feet and the plurality of first lower side feet are correspondingly engaged. The second upper support includes a second upper support body and a plurality of second upper side feet extending downward from the outer edge of the second upper support body. The second lower support includes a second lower support body and a plurality of second lower side feet extending upward from the outer edge of the second lower support body. The plurality of second upper side feet and the plurality of second lower side feet are correspondingly engaged and are respectively vertically opposite to the plurality of first upper side feet and the plurality of first lower side feet. A cushioning pad is attached to the outer surface of each set of vertically opposite first upper side feet, first lower side feet, second upper side feet and second lower side feet.
9. The portable battery device of claim 7, wherein, Several screws pass through the BMS bracket, the first upper bracket, the first lower bracket, the second upper bracket, and the second lower bracket in sequence to lock the BMS bracket, the first upper bracket, the first lower bracket, the second upper bracket, and the second lower bracket together.
10. The portable battery device of claim 5, wherein, The cover plate is provided with a charging interface, a discharging interface, and a handle bracket. On the inner side of the cover plate, a ring of sealant is applied around the charging interface, the discharging interface, and the handle bracket to form a sealant ring. Each ring of sealant seals the gap between the charging interface, the discharging interface, the handle bracket, and the cover plate.