Battery cell module fixing structure of battery pack

Abstract

The utility model discloses a battery pack cell module fixing structure which comprises a lower box body and a module pulling plate, one end of the module pulling plate is bent downwards to form a pulling plate stop plate, and the inner side face of the pulling plate stop plate is connected with a pulling plate mousing hook; the top of the end, corresponding to the pull plate stop plate, of the lower box body is inwards connected with a static clamping plate, a vertically-arranged elastic clamping plate is connected into the lower box body, the top of the clamping plate and the static clamping plate form a notch matched with the pull plate stop plate, and the other end in the lower box body is connected with a module end plate for fixing the other end of the module pull plate. According to the utility model, the use number of fasteners can be reduced, the cost is reduced, the production efficiency is improved, the failure risk can be avoided, and the product reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of battery pack testing equipment, specifically relating to the fixing structure of battery pack cell modules. Background Technology

[0002] The module pull plate inside the battery pack is a component that directly fixes the cell modules. In existing technologies, such as... Figure 5 As shown, both ends of the module pull plate are fastened together with fasteners, which are generally bolts or rivet nuts. In order to achieve a good fastening effect, a large number of fasteners are usually required, which results in high cost and low production efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a battery pack cell module fixing structure that can reduce the number of fasteners used, reduce costs, improve production efficiency, avoid failure risks, and improve product reliability.

[0004] To achieve the above objectives, the present invention provides a battery pack cell module fixing structure, including a lower housing and a module pull plate. One end of the module pull plate is bent downward to form a pull plate stop plate, and the inner side of the pull plate stop plate is connected to a pull plate anti-disengagement hook.

[0005] The lower housing has a stationary clamping plate connected inward to one end of the pull plate stop plate. A vertically arranged elastic clamping plate is connected inside the lower housing. The top of the clamping plate and the stationary clamping plate form a notch that cooperates with the pull plate stop plate. The other end of the lower housing is connected to a module end plate that fixes the other end of the module pull plate.

[0006] As a further embodiment of this utility model: the static clamping plate has an inclined surface on the end face near the notch.

[0007] As a further embodiment of this utility model: the top of the lower box is connected to the top cover, and the inner side of the top of the lower box is recessed to form a sealing surface for placing the sealing ring.

[0008] As a further embodiment of this utility model: the length of the pull plate stop plate is 3-20 times the thickness of the module pull plate.

[0009] As a further embodiment of this utility model: the width of the notch is the thickness t ± 0.5t of the pull plate stop plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. By utilizing the design of the pull plate stop plate and the notch that matches it, the number of fasteners used can be reduced, costs can be reduced, and production efficiency can be improved.

[0012] 2. When the battery cell is charging, the expansion force of the battery cell presses against the elastic clamping plate, which can further reduce the gap and further increase the clamping force of the module pull plate, thereby avoiding module pull plate failure and improving product reliability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the battery pack cell module fixing structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the main structure of the battery pack cell module fixing structure of this utility model.

[0015] Figure 3 This is the assembly drawing of the battery pack of this utility model.

[0016] Figure 4 This is an exploded view of the battery pack of this utility model.

[0017] Figure 5 This is a schematic diagram of the existing technology structure.

[0018] In the diagram: 1. Lower housing, 2. Module pull plate, 3. Static clamping plate, 4. Inclined surface, 5. Pull plate stop plate, 6. Pull plate anti-disengagement hook, 7. Elastic clamping plate, 8. Notch, 9. Sealing surface, 10. Top cover, 11. Battery cell module, 12. Sealing ring, 13. Buffer foam, 14. Module end plate. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, the battery pack cell module fixing structure includes a lower housing 1 and a module pull plate 2. One end of the module pull plate 2 is bent downward to form a pull plate stop plate 5. The inner side of the pull plate stop plate 5 is connected to a pull plate anti-disengagement hook 6.

[0021] The lower housing 1 has a stationary clamping plate 3 connected inward to one end of the pull plate stop plate 5. The lower housing 1 has a vertically set elastic clamping plate 7 connected inside. The top of the clamping plate and the stationary clamping plate 3 form a notch 8 that cooperates with the pull plate stop plate 5. The other end of the lower housing 1 is connected to a module end plate 14 that fixes the other end of the module pull plate 2.

[0022] By using the pull plate stop plate 5 and the notch 8 to fix one end of the lower housing 1 and the module pull plate 2, the number of traditional fasteners used can be effectively reduced, costs can be reduced, and production efficiency can be improved. At the same time, due to the reduction of fasteners, the failure of traditional fasteners can also be avoided, thereby improving product reliability.

[0023] To facilitate the installation of the module pull plate 2, a bevel 4 is provided on the end face of the stationary clamping plate 3 near the notch 8. The pull plate stop plate 5 and its connected pull plate anti-disengagement hook 6 can be inserted into the notch 8 by directly pressing the module pull plate 2 using the bevel 4 to form a fixation.

[0024] Furthermore, such as Figure 3 and Figure 4 As shown, the top of the lower housing 1 is connected to the top cover 10. The inner side of the top of the lower housing 1 is recessed to form a sealing surface 9 for placing the sealing ring 12. The upper surface of the module pull plate 2 is provided with buffer foam 13. After the module pull plate 2 is installed in place and the sealing ring 12 is fixed, the top cover 10 is connected and fixed to the lower housing 1. The buffer foam 13 can promote the downward pressure and fixing effect of the top cover 10 on the module pull plate 2.

[0025] To ensure the connection and fixation effect of the module pull plate 2, the length of the pull plate stop plate 5 is further 3-20 times the thickness of the module pull plate 2.

[0026] Furthermore, the width of notch 8 is t ± 0.5t of the thickness of the pull plate stop plate 5.

[0027] When using this utility model: During installation, the deformation capability of the elastic clamping plate 7 is utilized. First, the pull plate stop plate 5 of the module pull plate 2 and its connected pull plate anti-disengagement hook 6 are forcefully inserted into the notch 8. Then, the other end of the module pull plate 2 is connected to the module end plate 14 at the other end through fasteners, thus fixing the module pull plate 2. When the battery cell module 11 is charging, the expansion force of the battery cell presses against the elastic clamping plate 7, thus further reducing the notch 8 and further increasing the clamping force, thereby further fixing the module pull plate 2.

Claims

1. A battery pack cell module fixing structure, comprising a lower box body (1) and a module pull plate (2), characterized in that, One end of the module pull plate (2) is bent downward to form a pull plate stop plate (5), and the inner side of the pull plate stop plate (5) is connected with a pull plate anti-unhooking hook (6); The lower box body (1) is connected with a static clamping plate (3) on the top of one end corresponding to the pull plate stop plate (5), and the lower box body (1) is connected with an elastic clamping plate (7) arranged vertically, the top of the clamping plate and the static clamping plate (3) form a gap (8) matched with the pull plate stop plate (5), and the other end in the lower box body (1) is connected with a module end plate (14) fixing the other end of the module pull plate (2).

2. The battery pack cell module fixation structure according to claim 1, characterized by, The end face of the static clamping plate (3) close to the gap (8) is provided with an inclined surface (4).

3. The battery pack cell module fixing structure according to claim 1 or 2, characterized by, The lower box body (1) is connected with an upper cover (10) at the top end, and the top end of the lower box body (1) is sunken inward to form a sealing surface (9) for placing a sealing ring (12).

4. The battery pack cell module fixation structure according to claim 3, characterized by, The length of the pull plate stop plate (5) is 3-20 times the thickness of the module pull plate (2).

5. The battery pack cell module fixation structure according to claim 3, characterized by, The width of the gap (8) is t±0.5t of the thickness of the pull plate stop plate (5).

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