Full-sealed non-road vehicle power battery box

Abstract

The utility model discloses a fully-sealed power battery box for a non-road vehicle. The fully-sealed power battery box comprises a battery cell, a lower box body and an upper cover assembly, and the battery cell is fixed in the lower box body. The upper cover assembly is fixed to the top of the lower box body. The upper cover assembly comprises an upper cover body and an access cover. The top edge and the bottom edge of the upper cover body extend outwards to form a top installation edge and a bottom installation edge. According to the utility model, the first limiting block and the second limiting block are respectively fixed on the top mounting edge in the upper cover main body and the top of the lower box body, so that the access cover can be fixed with the top mounting edge at intervals through the first limiting block, and the bottom mounting edge in the upper cover main body can be fixed with the top of the lower box body at intervals through the second limiting block; and the structural adhesive is filled in the interval regions, so that the gap spaces among the components are closed while the components are fixed, and dust is further prevented from entering from the gaps to influence the battery cell.

Description

Technical Field

[0001] This utility model belongs to the field of power battery box technology, specifically relating to a fully sealed power battery box for off-road vehicles. Background Technology

[0002] In current technologies, with increasing environmental protection requirements and the trend towards electrification of non-road vehicles, the application of power batteries in non-road vehicles is becoming increasingly widespread. However, the operating environment of non-road vehicles is complex, often facing various adverse factors such as dust, moisture, and bumps. Existing power battery boxes have insufficient sealing performance, making it easy for dust and moisture to enter the box, affecting battery performance and lifespan, and potentially even causing safety issues. In addition, the structural design of traditional battery boxes needs improvement in terms of bump resistance and protection performance. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a fully sealed off-road vehicle power battery box to solve the technical problems of existing power battery boxes, such as poor sealing and weak resistance to bumps.

[0004] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0005] A fully sealed off-road vehicle power battery box includes battery cells, a lower housing, and a top cover assembly. The battery cells are fixed inside the lower housing. The top cover assembly is fixed to the top of the lower housing.

[0006] The upper cover assembly includes an upper cover body and an inspection cover. The top and bottom edges of the upper cover body extend outward to form a top mounting edge and a bottom mounting edge. A first limiting block and a second limiting block are respectively fixed to the top mounting edge and the top of the lower housing.

[0007] The inspection cover is fixed to the top mounting edge at a distance by a first limiting block, with a first structural adhesive layer filling the gap. The bottom mounting edge of the upper cover body is fixed to the top of the lower housing at a distance by a second limiting block, with a second structural adhesive layer filling the gap.

[0008] Furthermore, the top edge of the lower housing is bent inward to form a support edge that mates with the bottom mounting edge of the upper cover body. The second limiting block is fixed to the support edge.

[0009] Furthermore, the lower housing's inner cavity is equipped with multiple buffer pads. These buffer pads are formed by bending sheet metal, and are divided into side pad sections and a top bent section. The pad sections are spaced apart from the inner wall of the lower housing through the top bent section, forming a buffer area.

[0010] Furthermore, the pad portion is provided with reinforcing ribs.

[0011] Furthermore, the device also includes multiple fixing blocks. Multiple mounting plates that mate with the fixing blocks are located on the support edges on both sides of the lower housing. The fixing blocks are fixed to the mounting plates, thus limiting and fixing the upper cover body.

[0012] Furthermore, the fixing block has an L-shaped structure.

[0013] Furthermore, each of the aforementioned fixing blocks has a lifting hole on its top.

[0014] Furthermore, the upper cover body is provided with a waterproof and breathable valve, as well as multiple plug-in mounting holes. Each plug-in mounting hole is equipped with an electrical plug. The outer ring of each electrical plug is provided with a sealing ring.

[0015] Furthermore, the inner ring of the plug-in mounting hole is coated with sealant.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. This utility model fixes a first limiting block and a second limiting block to the top mounting edge of the upper cover body and the top of the lower box body, respectively. This allows the inspection cover to be fixed to the top mounting edge at a distance via the first limiting block, and the bottom mounting edge of the upper cover body to be fixed to the top of the lower box body at a distance via the second limiting block. By filling the gap area with structural adhesive, the gap space between the components is sealed while fixing the components, further preventing dust from entering from the gap and affecting the battery cell.

[0018] 2. This utility model provides multiple buffer pads formed by bending plates in the inner cavity of the lower box, which provides a buffering effect when the battery cells are subjected to vibration or impact, thereby improving the battery box's resistance to bumps.

[0019] 3. This utility model achieves double sealing protection for the battery box by setting a sealing ring on the outer ring of the electrical plug and applying sealant to the inner ring of the plug mounting hole, thereby improving the waterproof, dustproof and sealing performance of the battery box. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the upper cover assembly in this utility model;

[0022] Figure 3 This is an exploded view of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the lower box and the buffer pad in this utility model.

[0024] Reference numerals: 1. Lower housing; 2. Upper cover assembly; 3. Fixing block; 4. Upper cover body; 4-1. Top mounting edge; 4-2. Bottom mounting edge; 5. Inspection cover; 6. First limiting block; 7. First structural adhesive layer; 8. Second limiting block; 9. Mounting plate; 10. Buffer pad; 11. Reinforcing rib; 12. Second structural adhesive layer. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper side", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, a fully sealed off-road vehicle power battery box includes battery cells, a lower housing 1, an upper cover assembly 2, and multiple fixing blocks 3. The lower housing 1 is an open-top shell structure. The battery cells are embedded and fixed within the lower housing 1. The upper cover assembly 2 is fixed to the top of the lower housing 1 by the fixing blocks 3.

[0028] like Figure 2 As shown, the top cover assembly 2 includes a top cover body 4 and an inspection cover 5. The top and bottom edges of the top cover body 4 extend outwards, forming a top mounting edge 4-1 and a bottom mounting edge 4-2. Multiple first limiting blocks 6 are fixed on the top mounting edge 4-1. The inspection cover 5 is mounted on the top of the top cover body 4. The inspection cover 5 and the top mounting edge 4-1 of the top cover body 4 are spaced apart by the first limiting blocks 6, forming a first adhesive storage space. The first adhesive storage space is filled with a first structural adhesive layer 7, which, while fixing the inspection cover 5 to the top of the top cover body 4, seals the gap between the inspection cover 5 and the top cover body 4, preventing dust from entering through the gap and affecting the battery cell.

[0029] like Figure 3As shown, the top edge of the lower housing 1 is bent inward to form a supporting edge that matches the bottom mounting edge 4-2 on the upper housing body 4. The bottom mounting edge 4-2 on the upper housing body 4 is fixed to the supporting edge. In this embodiment, a plurality of second limiting blocks 8 are fixed on the supporting edge. The bottom mounting edge on the upper housing body 4 and the supporting edge are spaced apart by the second limiting blocks 8, forming a second adhesive storage space. The second adhesive storage space is filled with a second structural adhesive layer 12, which can fix the upper housing body 4 to the top of the lower housing 1 while sealing the gap between the upper housing body 4 and the lower housing 1, further preventing dust from entering from the gap and affecting the battery cell.

[0030] Furthermore, multiple mounting plates 9 are provided on the supporting edges on both sides of the lower housing 1, which cooperate with the fixing blocks 3. When the upper cover body 4 is fixed to the top of the lower housing 1, the fixing blocks 3 are inserted between the outer wall of the upper cover body 4 and the mounting plates 9, and the fixing blocks 3 and the mounting plates 9 are fixed by screws. This completes the limiting and fixing of the bottom mounting edge 4-2 on the upper cover body 4, which further ensures the firmness of the fixing between the upper cover body 4 and the lower housing 1, while avoiding the need for the supporting edges to be widened inward due to the installation and fixing of the upper cover body 4, thus compressing the installation space of the battery cells.

[0031] In this embodiment, the fixing block 3 has an L-shaped structure. When the inner end of the fixing block 3 is inserted into the gap between the outer wall of the upper cover body 4 and the mounting plate 9, the outer end can limit and fix the position of the upper cover body 4 in the horizontal direction.

[0032] Furthermore, each fixing block 3 has a lifting hole on its top. The lower housing 1 can be fixed to the corresponding frame by bolts fitting into the lifting holes.

[0033] like Figure 4 As shown, the lower housing 1 has multiple buffer pads 10 inside its cavity. The buffer pads 10 are formed by bending sheet metal and are divided into side pads and a top bent portion. The pads are spaced apart from the inner wall of the lower housing 1 by the top bent portion, forming a buffer area that can provide cushioning when the battery cell is subjected to vibration or impact.

[0034] Furthermore, the pad is provided with reinforcing ribs 11, which can ensure the rigidity and strength requirements of the lower box 1.

[0035] In addition, in this embodiment, the upper cover body 4 is equipped with a waterproof and breathable valve, as well as multiple plug-in mounting holes. The waterproof and breathable valve is used to ensure the balance of air pressure inside and outside the chamber while effectively preventing moisture and dust from entering the lower chamber 1. Each plug-in mounting hole is equipped with an electrical plug. The outer ring of the electrical plug is equipped with a sealing ring to effectively prevent moisture and dust from entering.

[0036] Furthermore, the inner ring of the plug-in mounting hole is coated with sealant, which, together with the sealing ring on the outer ring of the electrical plug-in, achieves a double seal.

[0037] In some embodiments, countersunk threaded blind holes are provided on three of the sides of the lower housing, so that the lower housing can be fixed to the corresponding frame with bolts.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fully-sealed non-road vehicle power battery box, comprising a battery cell, a lower box body (1) and an upper cover assembly (2); the battery cell is fixed in the lower box body (1); the upper cover assembly (2) is fixed on the top of the lower box body (1), characterized in that: the upper cover assembly (2) comprises an upper cover main body (4) and an inspection cover (5); the top and bottom edges of the upper cover main body (4) extend outward to form a top mounting edge (4-1) and a bottom mounting edge (4-2); the top mounting edge (4-1) and the top of the lower box body (1) are respectively fixed with a first limiting block (6) and a second limiting block (8); the inspection cover (5) is fixed at intervals with the top mounting edge (4-1) through the first limiting block (6), and a first structural adhesive layer (7) is filled therebetween; the bottom mounting edge (4-2) in the upper cover main body (4) is fixed at intervals with the top of the lower box body (1) through the second limiting block (8), and a second structural adhesive layer (12) is filled therebetween.

2. A fully sealed power battery pack for non-road vehicle according to claim 1, characterized in that: The top edge of the lower box body (1) is bent inward to form a supporting edge matched with the bottom mounting edge (4-2) on the upper cover main body (4); the second limiting block (8) is fixed on the supporting edge.

3. A fully sealed power battery pack for non-road vehicle according to claim 1, characterized in that: A plurality of buffer pads (10) are arranged in the inner cavity of the lower box body (1); the buffer pads (10) are formed by bending a plate member and divided into a pad portion on the side and a bent portion on the top; the pad portion is arranged at intervals with the inner wall of the lower box body (1) through the bent portion on the top to form a buffer area therebetween.

4. A fully sealed power battery pack for non-road vehicle according to claim 3, characterized in that: The pad portion is provided with a reinforcing rib (11).

5. A fully sealed power battery pack for non-road vehicle according to claim 1, characterized in that: Further comprising a plurality of fixed pressing blocks (3); a plurality of mounting plates (9) matched with the fixed pressing blocks (3) are arranged on the supporting edges on both sides of the lower box body (1); the fixed pressing blocks (3) are fixed with the mounting plates (9) to limit and fix the upper cover main body (4).

6. A fully sealed power battery pack for non-road vehicle according to claim 5, characterized in that: The fixed pressing blocks (3) have an L-shaped structure.

7. A fully sealed power battery pack for non-road vehicle according to claim 5, characterized in that: A lifting hole is formed in the top of each fixed pressing block (3).

8. A fully sealed power battery pack for non-road vehicle according to claim 1, characterized in that: A waterproof breather valve and a plurality of plug-in mounting holes are arranged on the upper cover main body (4); each plug-in mounting hole is provided with an electrical plug; a sealing ring is arranged on the outer circle of the electrical plug.

9. A fully sealed power battery pack for non-road vehicle according to claim 8, characterized in that: The inner circle of the plug-in mounting hole is coated with sealant.

Images