New energy automobile battery pack bottom protection structure

Abstract

The utility model relates to battery package technical field discloses a new energy automobile battery package bottom protection structure, including automobile chassis mounting bracket, fixed hole, the fixed hole sets up in the top inner wall of automobile chassis mounting bracket, be provided with adjusting mechanism on the automobile chassis mounting bracket, be provided with auxiliary mechanism on the automobile chassis mounting bracket, the adjusting mechanism includes battery package frame main part, battery package frame main part is attached to connect the bottom outer wall of automobile chassis mounting bracket, the bottom outer wall fixed connection of automobile chassis mounting bracket has T type frame, the bottom inner wall sliding connection of T type frame has adjusting plate, the front side outer wall fixed connection of adjusting plate has the locating column, in the utility model, through the cooperation design of each component in adjusting mechanism, has realized the flexible dismounting of protection component, need not to dismantle a large number of fixed screw, can dismantle the component of corresponding area according to the maintenance demand pertinence, has reduced the time and operating procedure of overall dismounting greatly.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a bottom protective structure for a new energy vehicle battery pack. Background Technology

[0002] Protective plates are installed at the forward connectors and cooling pipe joints of the battery pack to further protect the battery from damage caused by obstacles. Geely Galaxy series models use this method, along with the protective beams and the high-strength steel plates of the battery body, to form a triple-protection structure at the bottom.

[0003] With the increasing global demand for environmentally friendly travel, the new energy vehicle industry is booming. Leveraging the advantages of electric drive, it is environmentally friendly, sustainable, and has low-cost, readily available energy, gradually becoming the mainstream development direction of the automotive industry. In new energy vehicles, the battery pack, as the core energy supply component, is mostly located at the bottom of the vehicle. While this layout is beneficial for space utilization and vehicle center of gravity stability, it also exposes the battery pack to many potential risks. During actual driving, when the vehicle goes up and down bumps, travels on complex road conditions (such as potholes or unpaved roads), or passes through curved surfaces with specific curvatures, the bottom of the battery pack is easily subjected to impacts or struck by foreign objects (such as stones or protrusions). Minor impacts may only cause surface damage to the protective structure at the bottom of the battery pack, but in severe cases, foreign objects can penetrate the protection and reach deep into the battery cells, causing a series of serious safety problems such as thermal runaway, insulation failure, and leakage. Therefore, a protective structure for the battery pack is necessary.

[0004] The bottom protection structure of the battery pack has the following defects: the integrated protection structure requires the protective plate to be rigidly connected to the battery shell and chassis frame. If the bottom is damaged (such as by scraping or impact), a large number of related parts need to be disassembled for repair, which is a complicated process. Therefore, a bottom protection structure for new energy vehicle battery packs is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a bottom protection structure for a new energy vehicle battery pack, which aims to improve the problem in the prior art where the chassis frame is rigidly connected and if the bottom is damaged (such as by scraping or impact), a large number of related parts need to be disassembled for repair, which is a complicated process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bottom protective structure for a new energy vehicle battery pack, comprising a vehicle chassis mounting bracket and fixing holes. The fixing holes are formed on the top inner wall of the vehicle chassis mounting bracket. An adjustment mechanism is provided on the vehicle chassis mounting bracket, and an auxiliary mechanism is provided on the vehicle chassis mounting bracket. The adjustment mechanism includes a battery pack frame body, which is attached to the bottom outer wall of the vehicle chassis mounting bracket. A T-shaped frame is fixedly connected to the bottom outer wall of the vehicle chassis mounting bracket. An adjustment plate is slidably connected to the bottom inner wall of the T-shaped frame. A positioning post is fixedly connected to the front outer wall of the adjustment plate, and a compression spring is fixedly connected to the rear outer wall of the adjustment plate. Concave frames are slidably connected to the front and rear outer walls of the T-shaped frame, and a through hole is formed on the front inner wall of the concave frame.

[0007] As a further description of the above technical solution: the auxiliary mechanism includes a weight reduction port, which is opened on the top inner wall of the vehicle chassis mounting bracket, and a dividing groove is opened on the bottom outer wall of the vehicle chassis mounting bracket. A desiccant granule plate is fixedly connected to the bottom inner wall of the protective cover.

[0008] As a further description of the above technical solution: a steel sleeve is fixedly connected to the outer side wall of the adjusting plate, and the end of the compression spring away from the adjusting plate is fixedly connected to the inner rear wall of the T-shaped frame.

[0009] As a further description of the above technical solution: the bottom outer wall of the concave frame is slidably connected to a protective cover, and there are a number of through holes, which are respectively opened on the front inner wall of the concave frame and the protective cover.

[0010] As a further description of the above technical solution: the positioning post penetrates the inner wall of the through hole, and there are two protective covers, the total length and width of the two protective covers are adapted to the length and width of the battery pack frame body.

[0011] As a further description of the above technical solution: there are a number of weight reduction ports, which are opened on the top inner wall of the vehicle chassis mounting bracket, and the desiccant granule plate is fixedly connected to the inner walls of the front and rear sides of the protective cover.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, the flexible disassembly and assembly of the protective components is achieved through the coordinated design of the various components in the adjustment mechanism. There is no need to remove a large number of fixing screws. The components in the corresponding areas can be disassembled according to maintenance needs, which greatly reduces the overall disassembly and assembly time and operation steps, reduces the maintenance difficulty, and effectively improves the convenience and efficiency of battery pack maintenance. At the same time, the limiting installation method of the buckle and slide rail avoids the time-consuming and laborious disassembly and assembly problem caused by relying on multiple fixing screws, and optimizes the maintenance process.

[0014] 2. In this utility model, the weight reduction port can reduce the overall structural weight, reduce the vehicle's load, help reduce vehicle energy consumption, and improve range. In addition, the desiccant granule plate can absorb moisture entering the protective cover, keep the environment around the battery pack dry, effectively prevent the battery from being affected by moisture, thus reducing its performance or shortening its service life and enhancing the protection of the battery pack. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall front view of a bottom protective structure for a new energy vehicle battery pack proposed in this utility model;

[0016] Figure 2 This is a split diagram of the bottom protective structure of a new energy vehicle battery pack proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the adjustment mechanism of the bottom protective structure of a new energy vehicle battery pack proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the auxiliary mechanism of the bottom protection structure of a new energy vehicle battery pack proposed in this utility model.

[0019] Legend:

[0020] 1. Car chassis mounting bracket; 2. Fixing hole; 3. Adjustment mechanism; 31. Battery pack frame body; 32. T-shaped bracket; 33. Adjustment plate; 34. Positioning post; 35. Compression spring; 36. Concave bracket; 37. Through hole; 38. Protective cover; 4. Auxiliary mechanism; 41. Weight reduction port; 42. Differentiating groove; 43. Desiccant granule plate. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1-3This utility model provides an embodiment of a bottom protective structure for a new energy vehicle battery pack, including a vehicle chassis mounting bracket 1 and fixing holes 2. The fixing holes 2 are formed on the top inner wall of the vehicle chassis mounting bracket 1. The vehicle chassis mounting bracket 1 provides a basic load-bearing frame for the entire protective structure. The fixing holes 2 are used to stably connect the protective structure to the vehicle chassis to ensure a firm overall installation. An adjustment mechanism 3 and an auxiliary mechanism 4 are provided on the vehicle chassis mounting bracket 1. The adjustment mechanism 3 includes a battery pack frame body 31, which is attached to the bottom outer wall of the vehicle chassis mounting bracket 1. The battery pack frame body 31 is the core that directly supports the battery pack. The components provide installation space and support for the battery pack. A T-shaped frame 32 is fixedly connected to the bottom outer wall of the vehicle chassis mounting bracket 1. An adjusting plate 33 is slidably connected to the bottom inner wall of the T-shaped frame 32. A positioning post 34 is fixedly connected to the front outer wall of the adjusting plate 33. The positioning post 34 is used to insert through the through hole 37 to fix the concave frame 36 and the protective cover 38. A compression spring 35 is fixedly connected to the rear outer wall of the adjusting plate 33. Concave frames 36 are slidably connected to the front and rear outer walls of the T-shaped frame 32. The slidable connection facilitates the quick installation and removal of the concave frame 36. Protective covers 38 are set on the front and rear sides respectively to achieve zoned protection. Through holes 37 are opened on the front inner wall of the concave frame 36.

[0023] Reference Figures 2-4 A steel sleeve is fixedly connected to the outer side wall of the adjusting plate 33. The steel sleeve can enhance the structural strength of the side of the adjusting plate 33 and prevent the adjusting plate 33 from being damaged due to friction or force during sliding. The end of the compression spring 35 away from the adjusting plate 33 is fixedly connected to the inner rear wall of the T-shaped frame 32. A protective cover 38 is slidably connected to the outer bottom wall of the concave frame 36. There are several through holes 37. Several through holes 37 are respectively opened on the inner front wall of the concave frame 36 and the protective cover 38. Multiple through holes 37 can adapt to the positioning requirements of different installation positions. At the same time, through holes 37 are opened on the concave frame 36 and the protective cover 38 to achieve dual positioning of the two and enhance the connection stability. The positioning post 34 penetrates the inner wall of the inner ring of the through hole 37. There are two protective covers 38. The total length and width of the two protective covers 38 are adapted to the length and width of the battery pack frame body 31.

[0024] Reference Figures 3-4The auxiliary mechanism 4 includes a weight reduction port 41, which is located on the top inner wall of the vehicle chassis mounting bracket 1. The weight reduction port 41 is used to reduce the weight of the vehicle chassis mounting bracket 1 and reduce the load on the vehicle. The bottom outer wall of the vehicle chassis mounting bracket 1 is provided with a distinguishing groove 42, which can clearly identify the installation areas of the adjustment mechanism 3 and the auxiliary mechanism 4, making it convenient to quickly identify the position of the components during assembly and maintenance. The bottom inner wall of the protective cover 38 is fixedly connected with a desiccant granular plate 43. The desiccant granular plate 43 can absorb the moisture entering the protective cover 38, keep the environment around the battery pack dry, and prevent the battery from getting damp. There are several weight reduction ports 41, which are located on the top inner wall of the vehicle chassis mounting bracket 1. Multiple weight reduction ports 41 can further improve the weight reduction effect and at the same time disperse stress, avoiding the excessive impact of a single weight reduction port 41 on the strength of the mounting bracket. The desiccant granular plate 43 is fixedly connected to the inner walls of the front and rear sides of the protective cover 38.

[0025] Working principle: When maintenance is required, the existing pointed tool is inserted into the through hole 37 to push the positioning post 34 out of the through hole 37. The positioning post 34 moves inward, driving the adjusting plate 33 to move. The adjusting plate 33 moves and compresses the spring 35. Then, the concave frame 36 is pulled out from the outer wall of the T-shaped frame 32. Depending on the left or right position that needs maintenance, either concave frame 36 and the protective cover 38 can be disassembled, reducing the overall disassembly and maintenance time. The installation is limited by the buckle and slide rail, reducing the need for multiple fixing screws, which makes the assembly and disassembly of fixing screws time-consuming and laborious. At the same time, during the rainy season, the desiccant granule plate 43 absorbs the moisture in the air entering the bottom inner wall of the battery pack frame body 31, keeping the inner wall around the battery pack frame body relatively dry. At the same time, the weight reduction port 41 reduces the weight of the overall protective structure, reducing the load on the car and thus making the car more energy-efficient when driving.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bottom protective structure for a new energy vehicle battery pack, comprising a vehicle chassis mounting bracket (1) and fixing holes (2), characterized in that: The fixing hole (2) is opened on the top inner wall of the car chassis mounting bracket (1). The car chassis mounting bracket (1) is provided with an adjustment mechanism (3) and an auxiliary mechanism (4). The adjustment mechanism (3) includes a battery pack frame body (31). The battery pack frame body (31) is attached to the bottom outer wall of the car chassis mounting bracket (1). A T-shaped frame (32) is fixedly connected to the bottom outer wall of the car chassis mounting bracket (1). An adjustment plate (33) is slidably connected to the bottom inner wall of the T-shaped frame (32). A positioning post (34) is fixedly connected to the front outer wall of the adjustment plate (33). A compression spring (35) is fixedly connected to the rear outer wall of the adjustment plate (33). A concave frame (36) is slidably connected to the front and rear outer walls of the T-shaped frame (32). A through hole (37) is opened on the front inner wall of the concave frame (36).

2. The bottom protective structure of a new energy vehicle battery pack according to claim 1, characterized in that: The auxiliary mechanism (4) includes a weight reduction port (41), which is located on the top inner wall of the vehicle chassis mounting bracket (1). The bottom outer wall of the vehicle chassis mounting bracket (1) is provided with a dividing groove (42), and a desiccant particle plate (43) is fixedly connected to the bottom inner wall of the protective cover (38).

3. The bottom protective structure of a new energy vehicle battery pack according to claim 1, characterized in that: A steel sleeve is fixedly connected to the outer side wall of the adjusting plate (33), and the end of the compression spring (35) away from the adjusting plate (33) is fixedly connected to the inner rear wall of the T-shaped frame (32).

4. The bottom protective structure of a new energy vehicle battery pack according to claim 1, characterized in that: The bottom outer wall of the concave frame (36) is slidably connected to a protective cover (38), and there are several through holes (37), which are respectively opened on the front inner wall of the concave frame (36) and the protective cover (38).

5. The bottom protective structure of a new energy vehicle battery pack according to claim 4, characterized in that: The positioning post (34) penetrates the inner wall of the through hole (37). There are two protective covers (38), and the total length and width of the two protective covers (38) are adapted to the length and width of the battery pack frame body (31).

6. The bottom protective structure of a new energy vehicle battery pack according to claim 2, characterized in that: There are several weight reduction ports (41), and several weight reduction ports (41) are opened on the top inner wall of the vehicle chassis mounting bracket (1). The desiccant granule plate (43) is fixedly connected to the inner walls of the front and rear sides of the protective cover (38).

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