A fixing structure for a plurality of rectangular battery cells for an industrial electric vehicle

Abstract

The utility model provides a kind of many rectangular battery monomer fixing structures for industrial electric car, battery box contains battery pack, and battery pack includes several battery monomers, battery monomer is electrically connected by battery connecting sheet, fixing structure includes front side plate and rear side plate, the upper part of the rear side of front side plate is projected and is equipped with first pressing plate, first pressing plate is positioned with adjacent two battery monomers, the upper end of front side plate and the front side inner wall of battery box are fixed by bolt, the upper part of the front side of rear side plate is projected and is equipped with second pressing plate, second pressing plate is positioned with adjacent two battery monomers, the upper part of rear side plate is projected and is equipped with locating seat, battery connecting seat is fixed and arranged in the left and right sides of battery box rear part, battery monomer and battery connecting seat at first and last ends are electrically connected by end connecting sheet, locating seat and battery connecting seat are fixed by bolt;Compared with traditional pressing fixing structure, the utility model can be quickly disassembled and installed, and the installation position can be adjusted, saving manpower and material resources.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle battery technology, and in particular to a fixing structure for multiple rectangular battery cells used in industrial electric vehicles. Background Technology

[0002] Currently, electric industrial vehicles that use lithium battery packs as their power system use a clamping and fixing structure for battery pack installation. Therefore, there are almost no rectangular battery cell fixing structures used in the industrial electric vehicle field. However, the traditional clamping and fixing structure is prone to short circuits, has limited installation space, cannot be placed arbitrarily, has a slow battery pack installation and replacement speed, and consumes a lot of manpower and resources, which cannot meet market demands. Summary of the Invention

[0003] To address the problems existing in the prior art, this utility model provides a fixing structure for multiple rectangular battery cells used in industrial trolleys. Compared with traditional clamping fixing structures, it allows for quick assembly and disassembly, and adjustment of the installation position, saving manpower and resources.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] This utility model proposes a fixing structure for multiple rectangular battery cells used in industrial trolleys, including a battery box housing a battery pack. The battery pack includes several parallel battery cells, which are electrically connected via battery connecting pieces.

[0006] The fixing structure also includes a front side plate and a rear side plate, which are located on the front and rear sides of the battery pack, respectively. The upper part of the rear side of the front side plate has several first pressure plates protruding from it. The first pressure plates are positioned in conjunction with the upper ends of two adjacent battery cells. The upper end of the front side plate is fixedly connected to the front inner wall of the battery box by bolts. The upper part of the front side of the rear side plate has several second pressure plates protruding from it. The second pressure plates are positioned in conjunction with the upper ends of two adjacent battery cells. The upper part of the rear side of the rear side plate has two positioning seats protruding from it. The positioning seats are located on the left and right sides of the rear side plate. Two battery connecting seats are fixedly installed on the left and right sides of the rear of the battery box. The two battery cells at the beginning and end and the two battery connecting seats are electrically connected through end connecting pieces. The positioning seats and the battery connecting seats are fixedly connected by bolts.

[0007] Furthermore, a plurality of first cover plates are provided on the upper end of the rear side of the front panel, and the first cover plates are screwed into locking bolts in a vertical direction, the locking bolts pressing against the front end of the battery pack.

[0008] Furthermore, the front side panel includes a first side panel, a second side panel, and a third side panel integrally formed from front to back. The second side panel is fixed to the middle of the first side panel in a horizontal direction. The first cover plate starts from the upper end of the second side panel, protrudes upward, and then bends backward. The third side panel is fixed to the middle of the second side panel in a horizontal direction. The first pressure plate starts from the upper end of the third side panel, protrudes upward, and then bends backward.

[0009] Furthermore, the lower end of the front panel is provided with a support leg, the inner wall of the front side of the battery box is provided with a front mounting port, the support leg and the front mounting port cooperate, the upper end of one side of the support leg is provided with a locking key, the upper end of the front mounting port is provided with a locking slot, and the locking key and the locking slot cooperate for positioning.

[0010] Furthermore, the upper end of the rear panel is bent forward and provided with several second cover plates. The second cover plates are screwed into locking bolts in a vertical direction, and the locking bolts are pressed against the rear end of the battery pack.

[0011] Furthermore, the lower end of the rear side panel is bent backward to provide a lower mounting plate, which is fixedly connected to the bottom of the battery box by bolts.

[0012] Compared with the prior art, the present invention has the following technical effects:

[0013] This utility model provides front and rear side plates on both sides of the battery pack. The front and rear side plates are first locked in position by a limiting structure of pressure plate and cover plate. The front and rear side plates are then positioned and assembled with the inner wall of the battery box by bolts. The battery can be quickly disassembled and replaced. The position of the side plates can be freely adjusted according to the size of the battery box and battery pack. It can be applied to round and square battery packs and has good insulation performance. Attached Figure Description

[0014] Figure 1 This is an assembly diagram of an embodiment of this application;

[0015] Figure 2 This is an exploded view of an embodiment of this application;

[0016] Figure 3 This is a structural diagram of the front panel of an embodiment of this application;

[0017] Figure 4 This is a structural diagram of the rear side panel of an embodiment of this application.

[0018] The parts in the attached diagram are labeled as follows:

[0019] 1. Battery housing, 11. Front mounting port, 12. Bayonet mount,

[0020] 2. Front side panel, 21. First pressure plate, 22. First cover plate, 23. First side panel,

[0021] 24 Second side plate, 25 Third side plate, 26 Leg, 27 Locking key,

[0022] 3. Rear side plate, 31. Second pressure plate, 32. Positioning seat, 33. Second cover plate.

[0023] 34 Lower mounting plate,

[0024] 4. Battery cell, 5. Bolt, 6. Battery connector, 7. Locking bolt.

[0025] 8. End connector, 9. Battery connector. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This embodiment discloses a fixing structure for multiple rectangular battery cells used in industrial electric vehicles, such as... Figure 1 As shown, it includes a battery housing 1, which houses a battery pack. The battery pack includes eight parallel battery cells 4, which are electrically connected by seven battery connectors 9.

[0028] The fixing structure includes a front side plate 2 and a rear side plate 3, which are located on the front and rear sides of the battery pack, respectively.

[0029] like Figure 2 and Figure 3 As shown, four first pressure plates 21 protrude from the upper part of the rear side of the front side plate 2. The four first pressure plates 21 are respectively positioned in conjunction with the upper ends of two adjacent battery cells 4. The upper end of the front side plate 2 and the inner front wall of the battery box 1 are fixedly connected by four bolts 5. The bolts 5 are external hexagonal flange bolts.

[0030] Three first cover plates 22 protrude from the upper rear side of the front panel 2. Three locking bolts 7 are screwed into the three first cover plates 22 vertically. The locking bolts 7 are external hexagonal flange bolts, which are used to tighten the front end of the battery pack.

[0031] The front side panel 2 includes a first side panel 23, a second side panel 24, and a third side panel 25 integrally formed from front to back. The second side panel 24 is fixed in the middle of the first side panel 23 in the horizontal direction. The first cover plate 22 starts from the upper end of the second side panel 24, protrudes upward and then bends backward. The third side panel 25 is fixed in the middle of the second side panel 24 in the horizontal direction. The first pressure plate 21 starts from the upper end of the third side panel 25, protrudes upward and then bends backward.

[0032] like Figure 3 As shown, the lower end of the front panel 2 is provided with a support leg 26, the inner wall of the front side of the battery box 1 is provided with a front mounting port 11, the support leg 26 and the front mounting port 11 cooperate, the upper end of one side of the support leg 26 is provided with a locking key 27, the upper end of the front mounting port 11 is provided with a locking slot 12, the locking key 27 and the locking slot 12 cooperate for positioning.

[0033] During installation, lower the support leg 26 to the same height as the front mounting port 11, move the support leg 26 forward, and during the movement, the locking key 27 is interference-fitted with the upper end plate of the front mounting port 11 until the locking key 27 moves forward to the position of the locking slot 12. Insert the locking key 27 into the buckle 12 to fasten the front side plate 2 and the front inner wall of the battery box 1.

[0034] like Figure 2 and Figure 4 As shown, four second pressure plates 31 protrude from the upper part of the front side of the rear side plate 3. The four second pressure plates 31 are respectively positioned in conjunction with the upper ends of two adjacent battery cells 4. Two positioning seats 32 protrude from the upper part of the rear side of the rear side plate 3. The positioning seats 32 are located on the left and right sides of the rear side plate 3. The lower end of the rear side plate 3 is bent backward to provide a lower mounting plate 34. The lower mounting plate 34 is fixedly connected to the bottom end of the battery box 1 by bolts 5.

[0035] like Figure 1 As shown, two battery connectors 6 are fixedly installed on the left and right sides of the rear of the battery box 1. The battery connectors 6 are connected to external electrical components. The two battery cells 4 at the beginning and end and the two battery connectors 6 are electrically connected through end connecting pieces 8. The positioning seat 32 is pressed on the top of the battery connector 6. The positioning seat 32 and the battery connector 6 are fixedly connected by vertically screwed bolts 5.

[0036] The upper end of the rear panel 3 is bent forward and has three second cover plates 33. The three second cover plates 33 are screwed into three locking bolts 7 vertically, and the rear end of the battery pack is tightened by the locking bolts 7.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structure made using the contents of this utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fixing structure for multiple rectangular battery cells used in industrial electric vehicles, comprising a battery housing (1), the battery housing (1) accommodating a battery pack, the battery pack comprising a plurality of parallel-arranged battery cells (4), the battery cells (4) being electrically connected via battery connecting pieces (9), characterized in that, The fixing structure also includes a front side plate (2) and a rear side plate (3). The front side plate (2) and the rear side plate (3) are located on the front and rear sides of the battery pack, respectively. The upper part of the rear side of the front side plate (2) is provided with several first pressure plates (21). The first pressure plates (21) are positioned in conjunction with the upper ends of two adjacent battery cells (4). The upper end of the front side plate (2) and the inner front wall of the battery box (1) are fixedly connected by bolts (5). The upper part of the front side of the rear side plate (3) is provided with several second pressure plates (31). The two pressure plates (31) are positioned in conjunction with the upper ends of the two adjacent battery cells (4). The upper part of the rear side plate (3) is provided with two positioning seats (32). The positioning seats (32) are located on the left and right sides of the rear side plate (3). The left and right sides of the rear of the battery box (1) are fixedly provided with two battery connecting seats (6). The two battery cells (4) at the beginning and end and the two battery connecting seats (6) are electrically connected by end connecting pieces (8). The positioning seats (32) and the battery connecting seats (6) are fixedly connected by bolts (5).

2. The rectangular battery cell fixing structure according to claim 1, characterized in that, The upper end of the rear side of the front panel (2) is provided with several first cover plates (22), and the first cover plates (22) are screwed into the locking bolts (7) vertically, and the locking bolts (7) press against the front end of the battery pack.

3. The rectangular battery cell fixing structure according to claim 2, characterized in that, The front side plate (2) includes a first side plate (23), a second side plate (24) and a third side plate (25) integrally formed from front to back. The second side plate (24) is fixed in the middle of the first side plate (23) in the horizontal direction. The first cover plate (22) starts from the upper end of the second side plate (24), protrudes upward and then bends backward. The third side plate (25) is fixed in the middle of the second side plate (24) in the horizontal direction. The first pressure plate (21) starts from the upper end of the third side plate (25), protrudes upward and then bends backward.

4. The rectangular battery cell fixing structure according to claim 1, characterized in that, The lower end of the front panel (2) is provided with a support leg (26), and the inner wall of the front side of the battery box (1) is provided with a front mounting port (11). The support leg (26) and the front mounting port (11) cooperate. The upper end of one side of the support leg (26) is provided with a locking key (27), and the upper end of the front mounting port (11) is provided with a locking slot (12). The locking key (27) and the locking slot (12) cooperate for positioning.

5. The rectangular battery cell fixing structure according to claim 1, characterized in that, The upper end of the rear side plate (3) is bent forward and provided with several second cover plates (33). The second cover plates (33) are screwed into locking bolts (7) vertically, and the locking bolts (7) press against the rear end of the battery pack.

6. The rectangular battery cell fixing structure according to claim 1, characterized in that, The lower end of the rear side plate (3) is bent backward to provide a lower mounting plate (34), and the lower mounting plate (34) is fixedly connected to the bottom end of the battery box (1) by bolts (5).

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