Battery box protection plate for new energy automobile

Abstract

The utility model discloses a battery box protection plate for a new energy automobile, and relates to the field of new energy automobiles, the protection plate is of a composite structure, the protection plate comprises an outer rubber layer, a metal bottom plate, a module container and a metal top plate from bottom to top, the outer rubber layer is locked on the metal bottom plate, and the metal bottom plate and the metal top plate are locked to form a hollow interlayer; and a plurality of module containers filled with non-Newtonian fluid are fixedly arranged in the hollow interlayer. The battery box protection plate is not integrated with the battery, can be disassembled and assembled in the later period, has relatively high mechanical strength and impact suction capacity, and can better ensure the safety of the new energy automobile battery box.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicles, in particular to a battery box protection plate for new energy vehicles. BACKGROUND

[0002] In new energy vehicles, the battery box as a key component bears the safety protection function of the battery. With the popularity of new energy vehicles, the safety of the battery system has become the core problem of the industry. The design of the battery box on the chassis makes it the most vulnerable part in a collision accident. The damage to the battery box caused by the collision or damage to the battery box has become a major hidden danger of electric vehicle safety problems. Therefore, how to improve the protection capability of the battery box, which can effectively protect the battery and avoid high manufacturing and maintenance costs, is a technical problem to be solved at present.

[0003] In the prior art, the protection of the battery box is mainly through increasing the thickness of the material or strengthening its strength to improve the impact resistance. For example, a common method is to use higher strength metal alloys or composite materials to reinforce the shell of the battery box. This design can reduce the direct damage of external impact to the battery to a certain extent, however, with the improvement of the protection capability of the battery box, the corresponding cost will increase substantially. The thickening or strengthening of the battery box not only increases the procurement cost of raw materials, but also may lead to the increase of manufacturing process complexity, further increasing the overall production cost.

[0004] More importantly, simply increasing the thickness or strength of the battery box cannot completely solve all safety hazards. Even if the battery box can withstand a certain degree of impact, once a serious collision occurs, the replacement cost of the entire battery system will be very high if the battery box is damaged. Since the battery box is usually part of the battery pack, the disassembly and replacement process is very complex and expensive, which will undoubtedly increase the maintenance cost of the vehicle owner and reduce the economy of new energy vehicles. For consumers, such high-cost repair and replacement obviously does not meet the actual application requirements, and will also affect the market competitiveness of new energy vehicles.

[0005] Therefore, it is particularly important to develop a new battery box protection technology that can effectively prevent external collisions and achieve a reasonable balance between cost and safety. CONTENT OF THE INVENTION

[0006] The purpose of the present application is to at least overcome one deficiency of the prior art, and to provide a battery box protection plate for new energy vehicles, which is not integrated with the battery and can be disassembled later, and has high mechanical strength and impact absorption capacity, so as to better ensure the safety of the battery box of new energy vehicles.

[0007] To achieve the above object, the battery box protection plate for new energy vehicles is disclosed, which is a composite structure from bottom to top, including an outer rubber layer, a metal bottom plate, a module container and a metal top plate.

[0008] In some embodiments, the module container is a flat plastic box with a sealed cavity filled with non-Newtonian fluid.

[0009] In some embodiments, the sandwich layer is provided with a limiting plate for fixing each module container, which connects the metal plate and the metal bottom plate, thereby improving the structural strength of the protection plate.

[0010] In some embodiments, the upper surface of the metal top plate is provided with a plurality of rubber spacer blocks, which form a ventilation and heat dissipation space between the protection plate and the battery box for absorbing impact.

[0011] Compared with the prior art, the present application has at least one of the following beneficial effects:

[0012] 1. Effectively improve the protection ability of the battery box: the protection plate adopts a composite structure composed of an outer rubber layer, a metal bottom plate, a module container and a metal top plate, which can effectively absorb external impact force, reduce the risk of damage to the battery box and improve the overall safety of the battery.

[0013] 2. Reduce maintenance and replacement cost: the protection plate is designed as a detachable structure, and the non-integrated design allows the protection plate to be replaced individually when the battery box is damaged, without the need to replace the entire battery box, thereby significantly reducing the cost of maintenance and replacement.

[0014] 3. Improve the anti-impact and thermal management ability: the protection plate is filled with non-Newtonian fluid module containers, which can effectively absorb impact energy, and the characteristics of non-Newtonian fluid enable it to have good energy absorption capacity when subjected to external force, thereby enhancing the anti-impact performance of the battery box and improving the thermal management effect.

[0015] 4. Improve the structural strength and stability: the limiting plate is arranged in the sandwich layer to fix the module container, which further improves the structural strength of the protection plate, ensures that the protection plate can maintain stable performance in various environments, increases the service life and reliability of the protection plate.

[0016] The above listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Aspects of the present disclosure will become more fully understood from the detailed description and accompanying drawings. The drawings are intended for illustrative purposes only and the dimensions, positions, and / or relative sizes of the structures shown therein are not intended to be limiting. In the drawings:

[0018] Figure 1 is a structural schematic diagram of an embodiment of the present disclosure.

[0019] Figure 2 is a partial cross-sectional structural schematic diagram of an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] The present disclosure will be described with respect to the drawings in which only a few embodiments of the present disclosure are shown. These embodiments are described in sufficient detail to enable those skilled in the art to make and use the present disclosure, and it is understood that the disclosure is not limited to the embodiments described hereinafter. The embodiments described hereinbefore and hereinafter are meant to be exemplary only and are not meant to be limiting in any way. Furthermore, to those skilled in the art, it will be apparent that various modifications and changes can be made to the embodiments described without departing from the scope of the present disclosure. It is to be understood that the following description is merely exemplary of the principles of the present disclosure, and that numerous and various embodiments can be made by those skilled in the art without departing from the scope of the present disclosure.

[0021] It is to be understood that like numerals in the drawings represent like elements throughout the several embodiments. In the drawings:

[0022] It is to be understood that the phraseology and terminology used herein is for the purpose of description and not of limitation. Any terminology can be used that conveys the same or similar meaning to that which is intended to be described in connection with the present disclosure. Any terminology that is introduced and / or used herein relative to the present disclosure is intended to be interpreted in the ordinary sense and not in an overly literal sense.

[0023] As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly indicates otherwise. As used herein, the terms "includes", "including", "has", "having" and the like are not intended to be exclusive or otherwise limiting. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. EMBODIMENTS

[0024] Referring to the drawings, wherein like reference numerals refer to like elements throughout the several embodiments, FIG. 1 shows a schematic diagram of a battery pack 100 according to an embodiment of the present disclosure. Figure 1 and 2 The present embodiment provides a battery pack protection plate of a composite structure, which can effectively absorb impact energy and protect the battery pack.

[0025] In terms of structure, the protective plate is composed of multiple layers, from bottom to top, an outer rubber layer 1, a metal bottom plate 2, a module container 3, and a metal top plate 4. The outer rubber layer 1 is fixed on the metal bottom plate 2 by locking, and a hollow interlayer 5 is formed between the metal bottom plate 2 and the metal top plate 4. The module container 3 filled with non-Newtonian fluid is fixed in the hollow interlayer 5.

[0026] The outer rubber layer 1 is made of high-elasticity material, which mainly provides cushioning between the protective plate and the external environment, and prevents moisture and impurities from entering the interior of the protective plate. The metal bottom plate 2 serves as the basic structure of the protective plate, and its strength and rigidity ensure the stability and durability of the entire protective plate. The module container 3 is a flat plastic box with a sealed cavity filled with non-Newtonian fluid. The non-Newtonian fluid has the characteristics of providing additional protection when impacted, while maintaining fluidity under normal use conditions, reducing long-term pressure on the battery box.

[0027] In the hollow interlayer 5 formed between the metal bottom plate 2 and the metal top plate 4, a plurality of module containers 3 are arranged. These module containers 3 are fixed in the hollow interlayer 5 by limiting plates 6, which connect the metal bottom plate 2 and the metal top plate 4, thereby improving the structural strength of the protective plate. The design of the limiting plate 6 not only ensures that the module container 3 does not displace when impacted, but also enhances the structural stability of the entire protective plate.

[0028] The upper surface of the metal top plate 4 is provided with a plurality of rubber spacing pieces 7, which form a spacing between the protective plate and the battery box for ventilation, heat dissipation, and impact absorption. The design of the rubber spacing piece 7 takes into account the needs of heat conduction and air flow, allowing the heat generated by the battery box during operation to be effectively dissipated. At the same time, when impacted, the rubber spacing piece 7 can absorb part of the impact force, reducing direct damage to the battery box.

[0029] Under light impact, the viscoelastic properties of the non-Newtonian fluid allow the droplets to slow down after impact and effectively suppress the splashing phenomenon, thereby protecting the battery box from damage. Under severe impact, the blocking body of the non-Newtonian fluid will continuously propagate and expand, it will propagate downward and radially along the impact point. The blocking body is formed by compression between particles, on the one hand it can store the impact energy as elastic potential energy, on the other hand the expansion of the blocking body can take away the momentum and energy of the impact, thus showing strong stress effect on the impacting object.

[0030] In particular, the design of the module container 3 allows the remaining positions to still guarantee the protection effect even if one position is pierced and the non-Newtonian fluid flows out. This is because the fluidity and viscoelastic properties of the non-Newtonian fluid enable the remaining fluid to quickly redistribute and fill the gap, continuing to maintain the protection of the battery box even if part of the fluid is lost.

[0031] In summary, the battery box protection plate of the present structure achieves efficient protection and heat dissipation of the battery box through composite structure design. The cooperation of the outer rubber layer 1, the metal bottom plate 2, the module container 3, and the metal top plate 4, as well as the ingenious setting of the limiting plate 6 and the rubber spacing piece 7, not only improves the structural strength and protection performance of the protection plate, but also ensures the safety and stability of the battery box in various use environments. Through this design, the battery box protection plate of the present structure can effectively prolong the service life of the battery box and reduce maintenance costs, providing a more reliable battery protection solution for new energy vehicles.

[0032] 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 within the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A battery box protection plate for a new energy vehicle, characterized in that: The protective plate is a composite structure, from bottom to top, is outer rubber layer, metal bottom plate, module container, metal top plate, the outer rubber layer is locked on the metal bottom plate, the metal bottom plate and the metal top plate are locked to form a hollow sandwich, a plurality of module containers filled with non-Newtonian fluid are fixed in the hollow sandwich. ​ 2. The battery box protection plate for a new energy vehicle of claim 1, characterized in that: The module container is a flat plastic box with a sealed cavity inside, which is filled with non-Newtonian fluid.

3. The battery box protection plate for a new energy vehicle of claim 1, characterized in that: The sandwich is provided with a limiting plate for fixing each module container, the limiting plate connects the metal plate and the metal bottom plate, thereby improving the structural strength of the protective plate.

4. The battery box protection plate for a new energy vehicle of claim 1, characterized in that: The upper surface of the metal top plate is provided with a plurality of rubber spacing blocks, which form a spacing between the protective plate and the battery box for ventilation, heat dissipation and impact absorption.

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