Battery box for automobile
By using high-strength aluminum alloy materials and anti-collision components in the battery box, the problem of insufficient anti-collision performance of the battery box is solved, achieving low-cost and efficient battery protection, adapting to the needs of different vehicle models, and improving the safety and range of new energy vehicles.
Patent Information
- Application Number
- CN202423065567.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-12
AI Technical Summary
In existing technologies, the battery boxes of low-cost new energy vehicles rely on the body-in-white for protection, resulting in insufficient collision protection performance of the battery boxes, high costs that are difficult to improve, and a lack of effective independent collision protection solutions.
A battery box for automobiles has been designed, which uses high-strength aluminum alloy material and combines anti-collision components such as anti-collision beams, energy-absorbing boxes and hollow structures to enhance the battery box's anti-collision capability. It includes a streamlined head, an L-shaped anti-collision beam and a double-layer energy-absorbing box, and optimizes the structure to disperse and absorb collision energy.
It significantly improves the impact resistance of the battery pack, reduces the risk of battery damage, lowers production costs, adapts to the needs of different vehicle models, and enhances the safety and range of new energy vehicles.
Smart Images
Figure CN223680251U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of automobile parts, in particular to a battery box for automobiles. BACKGROUND
[0002] In the field of new energy vehicles, the low-cost battery box for automobiles currently has insufficient crashworthiness. In the prior art, the battery box of low-cost new energy vehicles usually relies on the body-in-white structure of the vehicle to achieve crash protection. The body-in-white, as the main load-bearing structure of the vehicle, can provide some protection for the battery box to some extent. However, this approach has many problems.
[0003] Firstly, the development and adjustment of the body-in-white is extremely costly. The design and manufacture of the body-in-white need to go through a complex engineering process, involving material selection, structural design, mold development, and many other aspects, each of which requires a large amount of investment and time. Moreover, once the body-in-white needs to be adjusted, it often needs to be redesigned and tested, which further increases the cost.
[0004] Secondly, relying solely on the body-in-white to protect the battery box limits the improvement of the battery box's own crashworthiness. The main function of the body-in-white is to carry the various components of the vehicle and provide overall structural strength, and the specialized protection of the battery box is relatively limited. In some collision situations, the body-in-white may not be able to fully and effectively protect the battery box, thereby increasing the risk of battery damage.
[0005] The reasons for these deficiencies are mainly as follows: first, the new energy vehicle market is highly competitive, and cost control is a key factor, so enterprises often prioritize reducing overall costs in the development process, and invest relatively less in the independent crashworthiness of the battery box; second, the design of the body-in-white mainly focuses on the overall performance and safety of the vehicle, and does not fully consider the special needs of the battery box; third, there is a lack of technical innovation, and there is a lack of effective independent crash solution for the battery box, resulting in reliance on the body-in-white.
[0006] Developing new technologies for battery boxes for automobiles is of great significance and value. CONTENT OF THE INVENTION
[0007] The purpose of the present application is to at least overcome one deficiency in the prior art, to provide a battery box for automobiles, which improves the crashworthiness of the battery box through a simplified structure, and can significantly improve the safety of the vehicle without relying on high-cost body-in-white adjustments. In daily driving and possible collision accidents, the battery can be better protected, reducing the safety risks caused by battery damage. On the other hand, this innovative battery box structure can effectively control costs while ensuring structural strength. It provides a more economical and reliable battery protection solution for the development of new energy vehicles, and helps to promote the sustainable and healthy development of the new energy vehicle industry.
[0008] To achieve the above object, the application discloses a battery box for a vehicle, which comprises a box body and anti-collision assemblies installed on both sides of the box body, wherein, to realize the installation of electrical appliances and the front-end anti-collision, a head part is formed on the front end of the box body, and the head part is hollow to form an installation compartment for accommodating battery control panel circuits and accessory electrical devices;
[0009] To realize the tail-end anti-collision of the battery box, a hollow structure is formed on the tail end of the box body to form an anti-collision part;
[0010] To realize the anti-collision of the two side surfaces of the battery box, the anti-collision assembly comprises an anti-collision beam and an energy absorption box connected between the anti-collision beam and the side surface of the box body.
[0011] In some embodiments, the side surface of the box body is a bevel surface, and the cross section of the anti-collision beam is L-shaped.
[0012] In some embodiments, the box body is provided with a plurality of hole positions for installation.
[0013] In some embodiments, the two side surfaces of the box body have a double-layer structure, and an energy absorption position is formed between the two layers. Preferably, EVA foam is arranged in the energy absorption position.
[0014] Compared with the prior art, the application has at least one of the following beneficial effects:
[0015] 1. Improved anti-collision performance: By arranging the anti-collision assembly on the front end, tail end and side surface of the battery box, the independent anti-collision ability of the battery box is significantly improved, which can more effectively protect the battery in a collision event and reduce the risk of battery damage, thereby improving the safety of the vehicle.
[0016] 2. Reduced cost: The battery box structure simplifies the design, reduces the dependence on traditional body-in-white, and does not require expensive body-in-white adjustment and high-cost research and development investment, thereby achieving a low production cost and effectively improving the anti-collision performance of the battery box.
[0017] 3. Structural innovation: The battery box adopts a hollow structure and a double-layer structure design, which not only maintains a high structural strength, but also effectively absorbs energy, reduces the impact of collision on the battery, and improves the anti-collision effect and service life.
[0018] 4. Strong adaptability: The design of the battery box can be adjusted according to the needs of different vehicle models, especially the side anti-collision assembly which can be flexibly adapted to the shape of the vehicle body, thereby enhancing the universality of the battery box and adapting to the design requirements of different new energy vehicles.
[0019] The above-listed benefits are not all-inclusive. Other potential benefits and detailed technical implementations will be further disclosed in the Examples or other description sections of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0020] Aspects of the present disclosure will become more fully understood from the detailed description and embodiments provided hereinafter and the accompanying drawings. The drawings shown in the accompanying drawings are sometimes shown not to scale for the sake of clarity. In the drawings:
[0021] Fig. 1 is a structural schematic diagram of an embodiment of the present disclosure.
[0022] Fig. 2 is a structural schematic diagram of an embodiment of the present disclosure from another perspective.
[0023] Fig. 3 is a structural schematic diagram of an embodiment of the present disclosure from yet another perspective.
[0024] Fig. 4 is a cross-sectional structural schematic diagram of an embodiment of the present disclosure. DETAILED DESCRIPTION
[0025] The present disclosure will be described with respect to the drawings in which the various embodiments of the present disclosure are shown. It is noted that the present disclosure can be presented in a multitude of different ways and that the application is not limited to the presentation described herein; indeed, the present disclosure can be practiced in a variety of ways. Additionally, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes and can not have been selected to delineate or circumscribe the inventive subject matter, resorting as it can to a breadth of terms and phrases. It is therefore intended that the present disclosure not be limited to the embodiments described herein, but that the embodiments described herein are merely intended to illustrate aspects of the present disclosure. It is also intended that the present disclosure encompass all such alternatives, modifications and variations as falling within the scope of the present disclosure, along with their equivalents.
[0026] It is to be understood that the same can be employed in various ways, and that it can not be necessary, appropriate or logical in each and every instance to employ the same. It is further noted that the drawings illustrate the principles of the present disclosure and in some instances, related structures and / or methods can be omitted or simplified for purposes of illustration and description. It will be apparent to those skilled in the art that numerous modifications, variations, and alternatives can be employed without parting from the scope of the present disclosure as set forth in the claims.
[0027] It is to be understood that the terminology employed in the specification is for the purpose of describing the particular embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the present disclosure have the same meaning as commonly understood by one of ordinary skill in the art. For the purposes of the present disclosure, the terms “including”, “containing”, “having” and the like are to be understood as being open terms that mean “including but not limited to”. Only the transitional phrases “consisting of’ and “consisting essentially of’ are closed or semi-closed phrases, respectively, with the transition phrases “consisting of’ and “consisting essentially of’ requiring the recitation of only the members of the group so that any other claimed members of the group cannot be present. Only the transitional phrases “comprising”, “including”, and “having” are open-ended, the same as the term “comprising” as specified below.
[0028] As used in the specification, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The terms "comprises," "comprising," "includes," "including," and "contains," as used in the specification, are intended to be open-ended terms i.e., to mean that the listed item includes at least the recited item and that additional items can also be present. The terms "consisting of" and "consisting essentially of" as used herein, mean that the composition, method or process claimed excludes any element other than those recited in the claim. Embodiments
[0029] Referring to the drawings Figs. 1 to 4 In the present embodiment, the battery box for automobile comprises a box body 1 and a crash component 2 installed on both sides of the box body 1. The box body 1 is made of high-strength aluminum alloy material, and steel plate is selected to provide sufficient structural strength at low cost. The selection of aluminum alloy not only reduces the overall weight of the battery box, which helps to improve the endurance of new energy vehicles, but also facilitates the design of complex structures due to its good processing performance.
[0030] The front end of the box body 1 is designed with a protruding head 3, which is streamlined to optimize the aerodynamic performance of the vehicle and reduce air resistance during driving. The streamlined design not only helps to improve the energy efficiency of the vehicle, but also effectively guides and disperses the impact force through the geometric shape of the head 3 when a frontal collision occurs, reducing the direct impact on the battery box. The inside of the head 3 is hollow, forming an installation compartment for accommodating battery control board circuits and accessory electrical devices. A shock-absorbing cushion layer is laid in the installation compartment, which is made of polyurethane material. This material has excellent elasticity and buffering performance, which can absorb part of the impact energy during a collision, reduce the vibration and displacement of electrical devices, and ensure their normal operation during a collision, thereby improving the reliability of the overall system.
[0031] The tail end of the box body 1 forms a crash portion 4 through a hollow structure 5.
[0032] The crash component 2 comprises a crash beam 6 and an energy-absorbing box 7 connecting the crash beam 6 and the side surface 8 of the box body 1. The crash beam 6 adopts an L-shaped cross-section design, which is compatible with the inclined surface structure of the side surface 8 of the box body 1, enhancing the bending resistance of the crash beam 6 and ensuring its close combination with the side surface 8 of the box body 1. The L-shaped cross-section not only provides greater lateral strength and longitudinal protection area, but also optimizes the energy dispersion path through its geometric shape, so that the impact force can be gradually transmitted along the length direction of the crash beam 6 during a collision, reducing the stress concentration points. The crash beam 6 is fixed to the side surface 8 of the box body 1 by high-strength bolts and rivets, ensuring that the crash beam 6 can effectively transmit and disperse the impact force during a collision, avoiding structural failure due to loose connection.
[0033] The energy absorption box 7 is installed between the crash beam 6 and the side 8 of the box 1, and adopts a double-layer structure design. The middle partition layer forms an energy absorption site 9, and the inside is filled with EVA foam 10. The double-layer structure design enables the energy absorption box 7 to provide double buffering during a collision. First, the outer layer structure disperses the primary impact force through its geometry. Second, the air bubble cotton in the inner layer rapidly compresses when subjected to force, absorbing a large amount of impact energy and reducing the direct impact of the collision force on the battery box 1. The EVA foam 10 has high energy absorption capacity and can instantly convert mechanical energy into heat energy, significantly reducing the energy transmitted to the battery box 1, thereby improving the overall crashworthiness.
[0034] The side 8 of the box 1 is designed as an inclined surface, which not only optimizes the overall aerodynamic performance, but also effectively disperses the impact force through geometric changes during a collision. The inclined angle of the inclined surface 8 is optimized so that, during a side collision, the impact force can gradually transfer along the inclined surface direction to the crash beam 6 and the energy absorption box 7, avoiding the concentration of impact force in a local area and reducing the risk of stress on local structures. In addition, the design of the inclined surface 8 can also reduce wind resistance during daily driving, improving the fuel efficiency and range of the vehicle.
[0035] The box 1 has several pre-drilled holes for mounting, which are evenly distributed on different parts of the box 1, facilitating the subsequent installation of temperature control systems, monitoring sensors, and other auxiliary equipment, further improving the functionality and safety of the battery box 1. The design of these holes takes into account the wiring and maintenance convenience of electrical equipment, ensuring that related equipment can be installed and replaced flexibly in actual applications without affecting the structural integrity and crashworthiness of the battery box 1.
[0036] In actual applications, for example, in the event of a side collision in an electric vehicle, the aforementioned battery box structure can respond quickly. First, the design of the inclined surface 8 disperses the impact force along the side direction, reducing concentrated stress and preventing local stress on the battery box 1 from being too large to cause damage. Subsequently, the crash beam 6 and the energy absorption box 7 work together, with the L-shaped cross-section of the crash beam 6 effectively transferring the impact force to the energy absorption box 7. The air bubble cotton inside the energy absorption box 7 rapidly compresses, absorbing and dispersing most of the impact energy, preventing the impact force from being directly transmitted to the battery pack. During this process, the box 1 is further buffered by the internal EVA foam 10, further reducing the impact of side collisions on the battery box 1, ensuring that the battery pack is effectively protected during a side collision.
[0037] The coordinated action of the entire structure ensures the safety of the battery in various collision situations, significantly reducing the risk of battery damage and potential safety risks.
[0038] Through the above design, the battery box for the automobile described in the embodiment not only effectively improves the crashworthiness, but also realizes cost control in material selection and structure optimization. The battery box structure is suitable for various existing new energy automobile models, has good adaptability, can be flexibly adjusted according to the needs of different models, and promotes the sustainable and healthy development of the new energy automobile industry.
[0039] In summary, through reasonable structure design and material selection, the battery box 1 realizes efficient crashworthiness in all directions, while keeping the manufacturing cost low. The close cooperation and synergistic effect of each component not only improve the safety and reliability of the overall system, but also provide solid technical support for the sustainable development of new energy vehicles.
[0040] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the additional claims, and the equivalents of these claims are also included.
Claims
1. A battery case for an automobile, characterized by: The battery box comprises a box body, and anti-collision assemblies installed on both sides of the box body, wherein a head part is formed at the front end of the box body, the head part is hollow to form an installation compartment for accommodating a battery control panel circuit and accessory electrical devices; an anti-collision part is formed at the tail end of the box body through a hollow structure; the anti-collision assembly comprises an anti-collision beam and an energy absorption box connected between the anti-collision beam and the side surface of the box body.
2. A battery case for an automobile as defined in claim 1, characterized by: The side surface of the box body is a slope surface, and the cross section of the anti-collision beam is L-shaped.
3. A battery case for an automobile as defined in claim 1, characterized by: The box body is provided with a plurality of hole positions for installation.
4. A battery case for an automobile as defined in claim 1, characterized by: The two sides of the box body have a double-layer structure, and an energy absorption position is formed in the middle of the two-layer structure.
5. A battery box for an automobile as defined in claim 4, characterized in that: EVA foam is arranged in the energy absorption position.