A multifunctional battery pack case

Abstract

The utility model relates to a kind of multifunctional battery package box, including battery package lower box and the battery package assembly upper cover of being installed in the top of battery package lower box, the beam assembly for reinforcing battery package lower box is equipped in battery package lower box, battery package assembly upper cover is used as car body front floor, and integrated seat crossbeam, reduce the number of parts, reduce manufacturing cost while reducing the weight of whole vehicle, improve endurance capability, there are the mounting hole position of starting battery on first seat crossbeam and second seat crossbeam, release front compartment space, adapt to the compact electric vehicle design of front compartment, can improve space utilization, precast mounting lifting lug can be realized with car body chassis fast alignment, make assembly time shorten, while silica gel foam sealing component cooperates bolt fixation, sealing is reliable and low in cost, adapt to complex vehicle use environment, make power supply system bottom guard plate and lower box flush, effectively block dust and silt invasion, protect internal power supply component.

Description

Technical Field

[0001] This utility model relates to the field of new energy electric vehicle technology, specifically a multifunctional battery pack housing. Background Technology

[0002] The structural designs of new energy vehicle battery packs include common chassis-integrated and under-floor mounting. In the former, the cells are directly integrated into the battery pack, and the mechanical strength of the pack relies entirely on the casing design and cell support structure. This makes it more prone to deformation in severe collisions, affecting safety, and replacing the entire pack is costly. In the latter, the battery pack is installed at the lowest point of the chassis. Traditional under-floor battery pack designs are limited by the vehicle's structure, making it difficult to maximize space utilization. Areas such as under the rear seats and in the front compartment are not fully utilized. Furthermore, the lack of integration between the vehicle body and the battery pack increases its weight, affecting the vehicle's range. Therefore, we need a multi-functional battery pack housing. Utility Model Content

[0003] The purpose of this utility model is to provide a multifunctional battery pack housing, in which the battery pack assembly cover also serves as the front floor of the vehicle body and integrates a seat crossbeam, thereby reducing the number of parts, lowering manufacturing costs, and reducing the overall vehicle weight, thus solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional battery pack housing, comprising: The battery pack lower housing and the battery pack assembly cover installed on the top of the battery pack lower housing are provided. The battery pack lower housing is provided with a crossbeam assembly to reinforce the battery pack lower housing. The bottom of the battery pack lower housing is provided with a lower housing bottom plate. A bottom guard plate mechanism to protect the bottom of the battery pack lower housing is provided on one side of the lower housing bottom plate.

[0005] Preferably, the crossbeam assembly includes a first seat crossbeam and a second seat crossbeam, both ends of which are fixedly installed on the inner wall of the lower battery pack housing, and both the first seat crossbeam and the second seat crossbeam are provided with a starting battery mounting and fixing point.

[0006] Preferably, the bottom protective plate mechanism includes a power system bottom protective plate and bolts. The power system bottom protective plate is fixed to the rectangular groove at the bottom of the lower battery pack housing by bolts. After installation, the bottom of the power system bottom protective plate is flush with the bottom of the lower housing bottom plate. The power system bottom protective plate is used to protect the internal power system, and the power system is equipped with an air duct cooling system.

[0007] Preferably, it also includes battery pack assembly mounting lugs, which are pre-cast on the outer perimeter of the lower housing base plate and are used for quick alignment and connection with a preset fixed position on the vehicle chassis.

[0008] Preferably, it also includes a sealing member, which is distributed in a frame shape on the top of the lower casing of the battery pack.

[0009] Preferably, the sealing component is a silicone foam piece, which is glued to the area around the top cover of the battery pack assembly, and the battery pack assembly is sealed to the vehicle body by bolts at the mounting lugs of the battery pack assembly.

[0010] Preferably, the upper cover of the battery pack assembly is fixedly connected to the bottom plate of the lower housing to form a closed cavity for accommodating the battery module and other accessories.

[0011] Preferably, the battery pack assembly cover serves as the front floor of the vehicle body.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model's battery pack assembly cover also serves as the front floor of the vehicle and integrates a seat crossbeam, reducing the number of parts, lowering manufacturing costs, reducing overall vehicle weight, and improving range. Both the first and second seat crossbeams have mounting holes for the starter battery, freeing up front compartment space and adapting to the compact design of electric vehicles, thus improving space utilization. Pre-cast mounting lugs enable quick alignment with the vehicle chassis, shortening assembly time. Meanwhile, silicone foam sealing components, combined with bolts for secure sealing, provide reliable and low-cost sealing, adapting to complex vehicle operating environments. The power system underbody protection plate is flush with the lower housing, effectively preventing dust and mud intrusion and protecting the internal power components. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a rear view schematic diagram of the structure of this utility model.

[0014] In the diagram: 1. Lower battery pack housing; 2. Upper battery pack assembly cover; 3. Crossbeam assembly; 31. First seat crossbeam; 32. Second seat crossbeam; 4. Lower housing bottom plate; 5. Bottom guard plate mechanism; 51. Power system bottom guard plate; 52. Bolt; 6. Battery pack assembly mounting lug; 7. Sealing component. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-2This utility model provides a technical solution: a multifunctional battery pack housing, comprising: The battery pack lower housing 1 and the battery pack assembly cover 2 installed on the top of the battery pack lower housing 1 are provided. The battery pack lower housing 1 is provided with a crossbeam assembly 3 to reinforce the battery pack lower housing 1. The bottom of the battery pack lower housing 1 is provided with a lower housing bottom plate 4. The bottom plate 4 is provided with a bottom guard plate mechanism 5 to protect the bottom of the battery pack lower housing 1 on one side. Specifically, the battery pack assembly cover 2 also serves as the front floor of the vehicle and integrates the seat crossbeam, reducing the number of parts, lowering manufacturing costs, reducing the overall vehicle weight, and improving range. At the same time, the first seat crossbeam 31 has a starting battery mounting position, freeing up front compartment space and adapting to the compact design of electric vehicles, which can improve space utilization. The pre-cast mounting lugs can achieve quick alignment with the vehicle chassis, shortening assembly time. Meanwhile, the silicone foam sealing component 7 is fixed with bolts 52, which is reliable and low-cost, adapting to the complex use environment of the vehicle. The power system bottom guard plate 51 is flush with the lower box, effectively blocking dust and mud intrusion and protecting the internal power components.

[0017] The crossbeam assembly 3 includes a first seat crossbeam 31 and a second seat crossbeam 32. Both ends of the first seat crossbeam 31 and the second seat crossbeam 32 are fixedly installed on the inner wall of the lower battery pack housing 1. Both the first seat crossbeam 31 and the second seat crossbeam 32 are provided with starting battery mounting points. Furthermore, the first seat crossbeam 31 and the second seat crossbeam 32 are arranged parallel to each other along the width direction of the lower battery pack housing 1. The crossbeam 31 is welded to the upper surface of the upper cover 2 of the battery pack assembly. The first seat crossbeam 31 is made of high-strength steel plate and is stamped. Its top has a pre-set recessed starting battery mounting point, which is compatible with the bottom mounting feet of the starting battery. The starting battery is detachably fixed by a combination of bolts 52 and spring washers. The crossbeam assembly 3 and the lower battery pack housing 1 form an integrated load-bearing structure, which can enhance the housing's resistance to deformation.

[0018] The bottom protective plate mechanism 5 includes a power system bottom protective plate 51 and bolts 52. The power system bottom protective plate 51 is fixed to the rectangular groove at the bottom of the battery pack lower box 1 by bolts 52. After the power system bottom protective plate 51 is installed, its bottom is flush with the bottom of the lower box bottom plate 4. The power system bottom protective plate 51 is used to protect the internal power system, and the power system is equipped with an air duct cooling system. Specifically, bolt 52 is a corrosion-resistant fastening bolt 52, and the bottom guard plate 51 of the power system is made of wear-resistant aluminum alloy sheet bent into shape. The edge is provided with a rectangular groove that matches the bottom of the battery pack lower box 1. The bottom guard plate 51 of the power system is screwed and fixed to the bottom threaded hole of the battery pack lower box 1 through the through hole of the corrosion-resistant fastening bolt 52. After installation, its bottom is flush with the bottom of the lower box bottom plate 4. The guard plate and the lower box bottom plate 4 form a continuous protective surface. Through the synergistic effect of the strength of the sheet itself and the flange structure, it blocks the intrusion of road dust and mud.

[0019] The multi-functional battery pack housing in this embodiment also includes battery pack assembly mounting lugs 6. The battery pack assembly mounting lugs 6 are pre-cast on the outer sides of the lower housing bottom plate 4. The battery pack assembly mounting lugs 6 are used for quick alignment and connection with the vehicle chassis at a preset fixed position. It is worth noting that the top of the lifting lug is integrally formed with the four side walls of the lower box plate, and the bottom is provided with bolt 52 through holes that are compatible with the pre-set mounting seats of the vehicle chassis. During assembly, the positioning slot first quickly engages with the mounting seats of the vehicle chassis, and then the bolt 52 passes through the through holes to achieve a fast connection. The integrated structure of the lifting lug and the lower box avoids welding deformation in the later stage.

[0020] It also includes a sealing component 7, which is arranged in a frame shape on the top of the lower casing 1 of the battery pack; The sealing component 7 is frame-shaped and glued to the top end face of the lower battery box 1. Its inner side is attached to the edge of the upper cover 2 of the battery pack assembly, and its outer side is flush with the top outline of the lower battery box 1. The sealing component 7, the upper cover 2 of the battery pack assembly, and the lower battery box 1 form a closed-loop sealing structure. It fills the gaps in the component assembly through its own compression deformation, thus achieving multiple seals.

[0021] The sealing component 7 is a silicone foam piece, which is glued to the area around the top cover 2 of the battery pack assembly. The battery pack assembly is sealed to the vehicle body by bolts 52 at the mounting lugs 6 of the battery pack assembly. It should be noted that when the bolts 52 at the mounting lugs 6 of the battery pack assembly are tightened, the upper cover 2 of the battery pack assembly presses down on the sealing component 7, causing the silicone foam to undergo elastic deformation and tightly fill the gap between the upper cover and the housing. Through the combination of the weather resistance of the silicone foam and the adhesive fixing method, the sealing effect can be ensured to be stable for a long time.

[0022] The upper cover 2 of the battery pack assembly is fixedly connected to the lower box base plate 4 to form a closed cavity for accommodating the battery module and other accessories. Furthermore, when bolt 52 is tightened, it causes the upper cover and the lower box to close precisely, forming a sealed cavity. At the same time, the cavity is equipped with a limiting boss that is compatible with the power supply component. The limiting boss and the cavity wall work together to support the power supply component and prevent it from shaking while the vehicle is in motion.

[0023] The battery pack assembly cover 2 serves as the front floor of the vehicle. Among them, the battery pack assembly cover 2 is made of high-strength steel stamping. Its upper surface serves as the load-bearing surface of the front floor of the vehicle. The cover simultaneously undertakes the dual functions of the front floor of the vehicle and the battery pack cover. There is no need to set up a separate front floor component. The integrated design with the seat crossbeam reduces the number of parts and reduces the complexity of vehicle assembly.

[0024] The battery pack assembly cover 2 serves as the front floor of the vehicle, supporting the entire vehicle. It also incorporates the welded first seat crossbeam 31 and second seat crossbeam 32 to support and securely connect the seats. The battery pack assembly cover 2 integrates the seat crossbeams into a single structure. The seat crossbeam structure includes mounting points for the starter battery, freeing up front compartment space and preventing competition with the motor and compressor for space. This is particularly suitable for electric vehicles with compact front compartments. The battery pack assembly cover 2 is multifunctional, exhibits high flatness and good vibration modes, and optimizes the vehicle's topology. The high utilization rate of passenger compartment space reduces the overall vehicle weight. The battery pack assembly is equipped with mounting lugs 6, which are pre-cast around the lower battery box. They can be quickly aligned with the pre-set fixed position on the chassis, shortening the assembly time. The sealing component 7 can be made of silicone foam or other materials and glued to the area around the battery pack assembly cover 2. The battery pack assembly is effectively sealed to the vehicle body by bolts 52 at the lugs. This sealing design is low-cost and highly reliable. In addition, the power system bottom protection plate 51 is flush with the lower box bottom plate 4, which can protect the internal power system from road dust and mud.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional battery pack housing, characterized in that, include: The battery pack lower housing (1) and the battery pack assembly cover (2) installed on the top of the battery pack lower housing (1) are provided. The battery pack lower housing (1) is provided with a crossbeam assembly (3) to reinforce the battery pack lower housing (1). The bottom of the battery pack lower housing (1) is provided with a lower housing bottom plate (4). The bottom of the lower housing bottom plate (4) is provided with a bottom guard plate mechanism (5) to protect the bottom of the battery pack lower housing (1) on one side.

2. The multifunctional battery pack housing according to claim 1, characterized in that: The crossbeam assembly (3) includes a first seat crossbeam (31) and a second seat crossbeam (32). Both ends of the first seat crossbeam (31) and the second seat crossbeam (32) are fixedly installed on the inner wall of the lower battery pack housing (1). The first seat crossbeam (31) and the second seat crossbeam (32) are provided with starting battery mounting points.

3. The multifunctional battery pack housing according to claim 1, characterized in that: The bottom protective plate mechanism (5) includes a power system bottom protective plate (51) and bolts (52). The power system bottom protective plate (51) is fixed to the bottom rectangular groove of the battery pack lower box (1) by bolts (52). After the power system bottom protective plate (51) is installed, its bottom is flush with the bottom of the lower box bottom plate (4). The power system bottom protective plate (51) is used to protect the internal power system, and the power system is equipped with an air duct cooling system.

4. The multifunctional battery pack housing according to claim 1, characterized in that: It also includes battery pack assembly mounting lugs (6), which are pre-cast on the outer sides of the lower housing bottom plate (4) and are used for quick alignment and connection with the vehicle chassis at a preset fixed position.

5. A multifunctional battery pack housing according to claim 1, characterized in that: It also includes a sealing member (7), which is arranged in a frame shape on the top of the lower casing (1) of the battery pack.

6. A multifunctional battery pack housing according to claim 5, characterized in that: The sealing component (7) is a silicone foam piece, which is glued to the area around the top cover (2) of the battery pack assembly. The battery pack assembly is sealed to the vehicle body by bolts (52) at the mounting lugs (6) of the battery pack assembly.

7. A multifunctional battery pack housing according to claim 1, characterized in that: The upper cover (2) of the battery pack assembly is fixedly connected to the lower box bottom plate (4) to form a closed cavity for accommodating the battery module and other accessories.

8. A multifunctional battery pack housing according to claim 1, characterized in that: The battery pack assembly cover (2) serves as the front floor of the vehicle body.

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