Power battery pack with mounting anti-loosening structure

Abstract

The utility model relates to the field of power battery pack especially relates to a power battery pack with installation anti -loose structure, the middle part of casing is equipped with power battery pack, power battery pack upper portion covers a pair of limit rod, limit rod bottom is equipped with a plurality of inserts, the middle part of each insert is equipped with wedge rubber pad and is connected in the gap between adjacent batteries, the upper part of limit rod is equipped with the pressing plate, and the both sides of pressing plate are equipped with fastening bolt, and fastening bolt passes limit rod downwards and is screwed with the upper wall of casing. In the utility model, by pressing limit rod on power battery, and cooperation fastening bolt makes that the pressing piece, insert structure can be effectively clamped in the battery gap, and cooperation the elastic compensation characteristics of wedge rubber pad effectively improves the connection compactness between batteries to prevent loosening, and the pressing strip mechanism of limit rod side wall provides transverse restraint, effectively restrains the mechanical loosening in the operation of battery pack, and the overall stability of battery pack is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of power battery pack technology, and in particular to a power battery pack with an anti-loosening installation structure. Background Technology

[0002] A power battery is a storage battery that can directly or indirectly provide power to an electric vehicle. When installing a power battery, multiple power batteries need to be combined and installed in the battery compartment of the electric vehicle.

[0003] However, traditional power battery packs have significant limitations when installed in the battery compartment. They can only ensure their own overall stability relative to the vehicle body, but cannot effectively constrain the stability between individual batteries within the battery pack. During long-term vehicle operation, these internal components will generate slight relative movements due to inherent mechanical gaps, which will intensify over time and affect the stability of the battery pack. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a power battery pack with an anti-loosening installation structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A power battery pack with an anti-loosening structure includes a housing, in which a power battery pack is disposed in the middle. A pair of limiting rods cover the upper part of the power battery pack. Multiple inserts are provided at the bottom of the limiting rods. Each insert has a wedge-shaped rubber pad in the middle and is engaged in the gap between adjacent batteries. A pressure plate is provided above the limiting rods. Fastening bolts are provided on both sides of the pressure plate. The fastening bolts pass downward through the limiting rods and are screwed to the upper wall of the housing.

[0007] The limiting rod has through holes on both sides to allow fastening bolts to pass through. A groove is formed through one side of the inner wall of the through hole. A pressure strip is installed inside the groove to limit the movement. The upper and lower parts of the pressure strip are connected to the inner wall of the groove by steel strips.

[0008] In addition, a preferred structure is that the upper wall of the housing has screw holes on both sides for screwing in fastening bolts.

[0009] In addition, a preferred structure is that the bottom of the limiting rod is provided with multiple inserts at equal intervals, and there is a gap between adjacent inserts to form a limiting groove, which fits and engages with the top of the battery.

[0010] In addition, a preferred structure is that the upper part of the insert is provided with a compression piece, which is limited and installed in a slot opened at the top of the limiting rod.

[0011] In addition, a preferred structure is that the top of the limiting rod is provided with an installation groove, the bottom wall of the installation groove is provided with multiple slots, and a pressure plate is installed in the installation groove for limiting, with the bottom wall of the pressure plate in contact with the extrusion sheet.

[0012] Furthermore, in a preferred configuration, the wide side of the wedge-shaped rubber pad faces downwards, while the pointed end faces downwards.

[0013] The beneficial effects of this utility model are as follows:

[0014] In this invention, by pressing the limiting rod onto the power battery and using fastening bolts, the pressing and inserting structures can be effectively clamped in the battery gaps. The elastic compensation characteristics of the wedge-shaped rubber pads effectively improve the tightness of the connection between the batteries to prevent loosening. At the same time, the pressure strip mechanism on the side wall of the limiting rod provides lateral restraint, effectively suppressing mechanical loosening during battery pack operation and significantly improving the overall stability of the battery pack. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of a power battery pack with an anti-loosening mounting structure proposed in this utility model.

[0016] Figure 2 This is an exploded view of the connection structure of the pressure plate and the limiting rod proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the external structure of the limiting rod proposed in this utility model;

[0018] Figure 4 This is a partial structural diagram of the limiting rod proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the insert structure proposed in this utility model;

[0020] Figure 6 This is a cross-sectional view of the internal structure of the limiting rod proposed in this utility model.

[0021] In the diagram: 1. Housing; 2. Power battery pack; 3. Limiting rod; 4. Pressure plate; 5. Fastening bolt; 6. Insert; 61. Extrusion plate; 7. Limiting groove; 8. Wedge-shaped rubber pad; 9. Mounting groove; 10. Slot; 11. Steel bar; 12. Pressure strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-6A power battery pack with an anti-loosening structure includes a housing 1, a power battery pack 2 disposed in the middle of the housing 1, a pair of limiting rods 3 covering the upper part of the power battery pack 2, a plurality of inserts 6 provided at the bottom of the limiting rods 3, a wedge-shaped rubber pad 8 provided in the middle of each insert 6 and engaged in the gap between adjacent batteries, a pressure plate 4 provided above the limiting rods 3, fastening bolts 5 passing through both sides of the pressure plate 4, the fastening bolts 5 passing downward through the limiting rods 3 and screwed to the upper wall of the housing 1;

[0024] The limiting rod 3 has through holes on both sides to pass through the fastening bolts 5. A groove is opened through one side of the inner wall of the through hole. A pressure strip 12 is installed inside the groove to limit the movement. The upper and lower parts of the pressure strip 12 are connected to the inner wall of the groove through steel strips 11.

[0025] The upper wall of the housing 1 has screw holes on both sides for screwing in and fastening bolts 5.

[0026] Multiple inserts 6 are equidistantly arranged at the bottom of the limiting rod 3, with gaps between adjacent inserts 6 to form a limiting groove 7, which fits and engages with the top of the battery.

[0027] An extrusion piece 61 is provided on the upper part of the insert 6, and the extrusion piece 61 is limited and installed in the slot 10 opened at the top of the limiting rod 3.

[0028] The top of the limiting rod 3 has an installation groove 9, the bottom wall of the installation groove 9 has multiple slots 10, and a pressure plate 4 is installed in the installation groove 9. The bottom wall of the pressure plate 4 is in contact with the extrusion sheet 61.

[0029] The wide side of the wedge-shaped rubber pad 8 faces downwards, and the pointed end faces downwards, using the wedge structure to achieve tight compression.

[0030] In this embodiment, the limiting rod 3 is placed on the upper part of the power battery pack 2, so that each insert 6 is respectively locked in the gap between adjacent batteries, and the limiting groove 7 at the bottom of the limiting rod 3 is naturally locked in the upper part of the battery. Then, the fastening bolt 5 is tightened so that it is connected to the screw hole at the top of the housing 1 and moves downward, thereby applying downward pressure to the pressure plate 4.

[0031] The pressure plate 4 transmits pressure to multiple extrusion plates 61, i.e. insert plates 6, in the middle of the limiting rod 3, pushing the insert plates 6 further into the battery gap. The wedge-shaped rubber pads 8 at the ends of the insert plates 6 are gradually compacted during the insertion process, using their wedge structure to enhance the tightness of the connection and effectively absorb the gap changes and vibrations between the batteries.

[0032] At the same time, during the screwing-in process, the fastening bolt 5 exerts lateral pressure on the pressure strip 12 inside the limiting rod 3, pushing the pressure strip 12 to adhere to the two side walls of the power battery pack 2, forming lateral constraints. The combination of the clamping of the insert 6 and the lateral limiting of the pressure strip 12 constitutes multi-directional constraints, significantly reducing the mechanical gap inside the battery pack, effectively suppressing loosening, and improving the stability and seismic performance of the overall structure.

[0033] It is worth noting that the housing 1 is a conventional configuration carrier for installing the power battery pack 2. The specific connection method between the housing 1 and the power battery pack 2, as well as the installation method between the housing 1 and the battery compartment of the electric vehicle, are common knowledge to those skilled in the art.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A power battery pack with an anti-loosening installation structure, comprising a housing (1), characterized in that, The housing (1) is equipped with a power battery pack (2) in the middle. The power battery pack (2) is covered with a pair of limiting rods (3). The bottom of the limiting rods (3) is provided with multiple inserts (6). Each insert (6) is provided with a wedge-shaped rubber pad (8) in the middle and is engaged in the gap between adjacent batteries. A pressure plate (4) is provided on the upper part of the limiting rods (3). Fastening bolts (5) are provided on both sides of the pressure plate (4). The fastening bolts (5) pass down through the limiting rods (3) and are screwed to the upper wall of the housing (1). The limiting rod (3) has through holes on both sides to pass through the fastening bolts (5). A groove is opened through one side of the inner wall of the through hole. A pressure strip (12) is installed inside the groove. The upper and lower parts of the pressure strip (12) are connected to the inner wall of the groove through steel strips (11).

2. A power battery pack with an anti-loosening installation structure according to claim 1, characterized in that, The upper wall of the housing (1) has screw holes on both sides for screwing in and fastening bolts (5).

3. A power battery pack with an anti-loosening installation structure according to claim 1, characterized in that, The bottom of the limiting rod (3) is provided with multiple inserts (6) at equal intervals, and there is a gap between adjacent inserts (6) to form a limiting groove (7), which fits and engages with the top of the battery.

4. A power battery pack with an anti-loosening installation structure according to claim 1, characterized in that, The upper part of the insert (6) is provided with a compression piece (61), which is installed in the slot (10) opened at the top of the limiting rod (3).

5. A power battery pack with an anti-loosening installation structure according to claim 4, characterized in that, The top of the limiting rod (3) is provided with an installation groove (9), the bottom wall of the installation groove (9) is provided with multiple slots (10), and a pressure plate (4) is installed in the installation groove (9) for limiting, and the bottom wall of the pressure plate (4) is in contact with the extrusion sheet (61).

6. A power battery pack with an anti-loosening installation structure according to claim 1, characterized in that, The wide side of the wedge-shaped rubber pad (8) faces downwards, while the pointed end faces downwards.

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