Sheet metal structure capable of fixing lithium iron phosphate battery module

Abstract

The utility model relates to the technical field of lithium iron phosphate batteries, in particular to a metal plate structure capable of fixing a lithium iron phosphate battery module, which comprises a plastic battery cell baffle plate, the lithium iron phosphate battery module is arranged in the plastic battery cell baffle plate, and a metal plate fixing belt is sleeved outside the plastic battery cell baffle plate. A metal plate inserting plate with the two ends extending to the outside is arranged in the metal plate fixing belt, the metal plate fixing belt comprises an upper layer and a lower layer, a plurality of longitudinal adjusting assemblies used for adjusting the distance are arranged between the upper layer and the lower layer of the metal plate fixing belt, each longitudinal adjusting assembly comprises an inlay plate, and the two ends of each inlay plate movably extend to the inside of the metal plate fixing belt. A sliding groove is formed in the side, away from the metal plate fixing belt, of the inlaid plate, a rail groove is formed in one side of the inner wall of the sliding groove, and a sliding block is arranged on one side of the metal plate fixing belt. The problems that a fixing structure of an existing lithium iron phosphate battery pack is poor in effect, the possibility of battery cell expansion is difficult to reduce, and therefore the performance of battery cells is better released are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium iron phosphate batteries, in particular to a sheet metal structure capable of fixing a lithium iron phosphate battery module. Background Technique

[0002] Lithium iron phosphate batteries usually need to be assembled and used in cooperation with a fixing frame. After retrieval, the patent with the application number CN202322946316.7 discloses a fixing frame for assembling lithium iron phosphate batteries. When the battery cell bulges, the induction block and the trigger plate can be pushed, so that the trigger shaft can be pushed to rotate. According to the rotation direction of the trigger shaft, the position of the bulging battery cell can be judged, and the bulging battery cell can be quickly disassembled and replaced separately, which is more convenient.

[0003] The fixing structure of the above device has a poor fixing effect. Although it can mark the bulging position when the battery cell expands, it is difficult to reduce the possibility of battery cell expansion, so the performance of the battery cell cannot be better released. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a sheet metal structure capable of fixing a lithium iron phosphate battery module, which solves the problems that the fixing structure of the existing lithium iron phosphate battery pack has a poor effect, is difficult to reduce the possibility of battery cell expansion, and thus better releases the performance of the battery cell.

[0005] To achieve the above object, the utility model provides the following technical scheme: A sheet metal structure capable of fixing a lithium iron phosphate battery module, including a plastic battery cell baffle, the lithium iron phosphate battery module is installed inside the plastic battery cell baffle, a sheet metal fixing belt is sleeved outside the plastic battery cell baffle, a sheet metal insertion plate with both ends extending to the outside thereof is arranged inside the sheet metal fixing belt, the sheet metal fixing belt includes upper and lower layers, and a plurality of longitudinal adjusting components for distance adjustment are arranged between the upper and lower layers of the sheet metal fixing belt.

[0006] Preferably, the longitudinal adjusting component includes an inlay plate, both ends of the inlay plate extend into the sheet metal fixing belt movably, a chute is opened on one side of the inlay plate away from the sheet metal fixing belt, a track groove penetrating the inlay plate is opened on one side of the inner wall of the chute, a slider movably penetrating the track groove is arranged on one side of the sheet metal fixing belt, and a sliding plate sliding along the chute is arranged at one end of the slider.

[0007] Preferably, the inlay plate includes a middle rectangular plate and triangular plates arranged at both ends of the rectangular plate, and a groove adapted to the inlay plate is opened on one side of the sheet metal fixing belt.

[0008] Preferably, two rows of limiting grooves communicated with the chute are opened on one side of the inlay plate, two limiting columns adapted to the limiting grooves are fixedly connected to one side of the sheet metal fixing belt, and the limiting columns extend into one of the limiting grooves movably.

[0009] Preferably, a plurality of ventilation holes are formed on one side of the sliding plate, and the ventilation holes are located on both sides of the sliding block.

[0010] Preferably, the length of the inlay panel is not greater than half of the height of the sheet metal fixing band.

[0011] Compared with the prior art, the utility model provides a sheet metal structure capable of fixing a lithium iron phosphate battery module, which has the following beneficial effects:

[0012] 1. By providing the sheet metal fixing band and the sheet metal plug board, using the sheet metal as the main fixing structure for the lithium iron phosphate battery pack, the fixing firmness of the lithium iron phosphate battery pack is improved, the possibility of cell swelling can be reduced, and thus the performance of the cell can be better released.

[0013] 2. By providing the longitudinal adjustment assembly, the overall height of the sheet metal fixing band can be flexibly adjusted as needed to adapt to the fixing of lithium iron phosphate battery packs of different heights.

[0014] 3. Through the structural design of the inlay panel, not only the possibility of damaging the edge of the inlay panel when adjusting the overall height of the sheet metal fixing band is reduced, but also the contact area between the inlay panel and the inner lithium iron phosphate battery pack is increased, and the possibility of the inlay panel and the sheet metal fixing band sliding relative to the lithium iron phosphate battery pack can be reduced.

[0015] 4. Through the ventilation holes provided on the inlay panel, the heat generated during the operation of the lithium iron phosphate battery pack can escape through the ventilation holes, and the chute on the side of the inlay panel close to the lithium iron phosphate battery pack also increases the area of the lithium iron phosphate battery pack that is not wrapped, which is more conducive to the heat dissipation of the lithium iron phosphate battery pack. Brief Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the whole of the utility model;

[0018] Figure 2 is a schematic structural diagram of the sheet metal fixing band and the longitudinal adjustment assembly of the utility model;

[0019] Figure 3 is a partial sectional view of the sheet metal fixing band and the longitudinal adjustment assembly of the utility model;

[0020] Figure 4 is a schematic structural diagram of the longitudinal adjustment assembly of the utility model.

[0021] In the figure: 1. Sheet metal fixing belt; 2. Sheet metal insertion plate; 3. Plastic battery cell baffle; 4. Longitudinal adjustment component; 41. Inlaid plate; 42. Slide block; 43. Slide plate; 5. Limit post. Detailed implementation mode

[0022] The following will be combined with the drawings and embodiments to detail the implementation mode of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly.

[0023] Aiming at the existing fixing method of lithium iron phosphate battery packs, this embodiment proposes a fixing method with better firmness. Refer to Figures 1-4 As an embodiment of the present invention, a sheet metal structure for fixing a lithium iron phosphate battery module is proposed. By using sheet metal as the main structure, the firmness of the lithium iron phosphate battery pack fixing is improved. It includes a plastic battery cell baffle 3, the lithium iron phosphate battery module is installed inside the plastic battery cell baffle 3, a sheet metal fixing belt 1 is sleeved outside the plastic battery cell baffle 3, and a sheet metal insertion plate 2 with both ends extending to its outside is arranged inside the sheet metal fixing belt 1. The sheet metal fixing belt 1 includes upper and lower layers, and a plurality of longitudinal adjustment components 4 for distance adjustment are arranged between the upper and lower layers of the sheet metal fixing belt 1. When in use, since the plastic battery cell baffle 3 is first wrapped outside the lithium iron phosphate battery pack, and then a layer of sheet metal fixing belt 1 is sleeved outside, and the sheet metal fixing belt 1 is fixed to the lithium iron phosphate battery pack as a whole by using the sheet metal insertion plate 2. When the height of the lithium iron phosphate battery pack is relatively high, the gap between the sheet metal fixing belts 1 can be adjusted along the longitudinal adjustment component 4, so that the sheet metal fixing belts 1 are distributed within a larger range of heights. Using sheet metal as the main fixing structure for the lithium iron phosphate battery pack improves the firmness of the lithium iron phosphate battery pack fixing, can reduce the possibility of cell expansion, and thus better releases the performance of the cells.

[0024] For lithium iron phosphate batteries of different sizes, in order to achieve good fixation, it is necessary to flexibly adjust the height of the sheet metal fixing strap 1 according to the height of the lithium iron phosphate battery pack. In this embodiment, the longitudinal adjustment assembly 4 adjusts the height of the sheet metal fixing strap 1 to match the height of the lithium iron phosphate battery pack. The longitudinal adjustment assembly 4 includes an inlay plate 41. Both ends of the inlay plate 41 extend into the interior of the sheet metal fixing strap 1 movably. A chute is provided on one side of the inlay plate 41 away from the sheet metal fixing strap 1, and a track groove penetrating the inlay plate 41 is provided on one inner wall of the chute. A slider 42 that movably penetrates the track groove is provided on one side of the sheet metal fixing strap 1, and a sliding plate 43 that slides along the chute is provided at one end of the slider 42. During use, first, the sheet metal fixing strap 1 is sleeved in the middle of the lithium iron phosphate battery pack, and then the upper and lower layers of the sheet metal fixing strap 1 are moved along the inlay plate 41 towards both ends of the lithium iron phosphate battery pack respectively. The sheet metal fixing strap 1 drives the sliding plate 43 to slide along the inlay plate 41 through the slider 42 until the overall height of the sheet metal fixing strap 1 matches the height of the lithium iron phosphate battery pack, so that the overall height of the sheet metal fixing strap 1 can be flexibly adjusted as needed to fit lithium iron phosphate battery packs of different heights for fixation.

[0025] Since the sheet metal fixing strap 1 will move along the inlay plate 41 during adjustment, there is a high possibility that the slider 42 and the sliding plate 43 will collide with the inner wall of the inlay plate 41. In order to reduce the possibility of the inlay plate 41 being deformed by the collision, the shape of the inlay plate 41 is improved in this embodiment. The inlay plate 41 includes a middle rectangular plate and triangular plates provided at both ends of the rectangular plate. A groove adapted to the inlay plate 41 is provided on one side of the sheet metal fixing strap 1. During use, the triangular plates at both ends of the inlay plate 41 increase the thickness of the edge of the inlay plate 41 on the side being impacted, which not only reduces the possibility of the edge of the inlay plate 41 being damaged by the impact when adjusting the overall height of the sheet metal fixing strap 1, but also increases the contact area between the inlay plate 41 and the inner lithium iron phosphate battery pack, and can reduce the possibility of the inlay plate 41 and the sheet metal fixing strap 1 sliding relative to the lithium iron phosphate battery pack.

[0026] In order to facilitate fixation when the overall height of the sheet metal fixing strap 1 is adjusted to an appropriate level and prevent the sheet metal fixing strap 1 from shortening or stretching after the height is adjusted, a limiting structure is provided in this embodiment. Two rows of limiting grooves communicating with the chute are provided on one side of the inlay plate 41, and two limiting posts 5 adapted to the limiting grooves are fixedly connected to one side of the sheet metal fixing strap 1. The limiting posts 5 extend into one of the limiting grooves movably. During use, the sheet metal fixing strap 1 slides along the inlay plate 41 until it slides to a suitable position, and then the limiting posts 5 on the sheet metal fixing strap 1 are inserted into the limiting grooves on the inlay plate 41. Due to the limiting effect of the limiting grooves, the sheet metal fixing strap 1 cannot continue to slide up and down along the inlay plate 41, which facilitates limiting after adjusting the overall height of the sheet metal fixing strap 1.

[0027] Since the main structure for fixing the lithium iron phosphate battery pack is sheet metal, in order to improve the heat dissipation effect of the lithium iron phosphate battery pack, in this embodiment, a plurality of ventilation holes are provided on one side of the slide plate 43. The ventilation holes are located on both sides of the slider 42. The ventilation holes can prevent the slide plate 43 from sliding on the lithium iron phosphate battery pack, and the heat generated during the operation of the lithium iron phosphate battery pack can escape to the outside through the ventilation holes. Moreover, the chute on the side of the inlay plate 41 close to the lithium iron phosphate battery pack also increases the area of the lithium iron phosphate battery pack that is not covered, which is more conducive to the heat dissipation of the lithium iron phosphate battery pack.

[0028] In order for the inlay plate 41 to be embedded inside the sheet metal fixing belt 1, corresponding grooves need to be provided on the inner side of the sheet metal fixing belt 1, which results in a reduction in the overall strength of the sheet metal fixing belt 1. To ensure the strength of the sheet metal fixing belt 1, in this embodiment, the length of the inlay plate 41 is limited. The length of the inlay plate 41 is not greater than half of the height of the sheet metal fixing belt 1, thereby ensuring the area of the region of the sheet metal fixing belt 1 where no groove is provided and reducing the possibility of deformation of the sheet metal fixing belt 1.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sheet metal structure for fixing a lithium iron phosphate battery module, including a plastic battery cell baffle (3), the lithium iron phosphate battery module is installed inside the plastic battery cell baffle (3), and it is characterized in that: The outer part of the plastic battery cell baffle (3) is sleeved with a sheet metal fixing band (1). The inside of the sheet metal fixing band (1) is provided with a sheet metal insertion plate (2) with both ends extending to its outside. The sheet metal fixing band (1) includes upper and lower layers, and a plurality of longitudinal adjusting components (4) for distance adjustment are arranged between the upper and lower layers of the sheet metal fixing band (1).

2. The sheet metal structure for fixing a lithium iron phosphate battery module according to claim 1, wherein: The longitudinal adjusting component (4) includes an inlay panel (41). Both ends of the inlay panel (41) are movably extended into the inside of the sheet metal fixing band (1). A sliding groove is formed on one side of the inner wall of the sliding groove away from the sheet metal fixing band (1), and a track groove penetrating the inlay panel (41) is formed on one side of the inner wall of the sliding groove. One side of the sheet metal fixing band (1) is provided with a slider (42) movably penetrating the track groove, and one end of the slider (42) is provided with a sliding plate (43) sliding along the sliding groove.

3. A sheet metal structure for fixing a lithium iron phosphate battery module according to claim 2, characterized in that: The inlay panel (41) includes a middle rectangular plate and triangular plates arranged at both ends of the rectangular plate. A groove adapted to the inlay panel (41) is formed on one side of the sheet metal fixing band (1).

4. A sheet metal structure capable of fixing a lithium iron phosphate battery module according to claim 2, characterized in that: Two rows of limiting grooves communicated with the sliding groove are formed on one side of the inlay panel (41). Two limiting columns (5) adapted to the limiting grooves are fixedly connected to one side of the sheet metal fixing band (1), and the limiting columns (5) are movably extended into the inside of one of the limiting grooves.

5. A sheet metal structure for fixing a lithium iron phosphate battery module according to claim 2, characterized in that: A plurality of ventilation holes are formed on one side of the sliding plate (43), and the ventilation holes are located on both sides of the slider (42).

6. A sheet metal structure capable of fixing a lithium iron phosphate battery module according to claim 2, characterized in that: The length of the inlay panel (41) is not greater than half of the height of the sheet metal fixing band (1).

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