Tray, bottom protection plate, power battery and vehicle

Abstract

The utility model discloses a tray, a bottom protection plate, a power battery and a vehicle, and relates to the field of power batteries. The tray comprises a frame, a tray bottom plate and a first damage warning layer. The tray bottom plate is connected with the bottom of the frame, and the tray bottom plate and the frame define a containing cavity used for installing a battery cell of the power battery; the first damage warning layer is arranged on at least one of the frame and the tray bottom plate, a marker which can be scattered after being damaged is arranged in the first damage warning layer, and the marker is at least one of liquid and particles. According to the power battery tray provided by the embodiment of the utility model, the warning capability when the tray is accidentally impacted is enhanced, and a user can judge the damage degree of the tray according to the scattered markers so as to judge how to maintain the power battery, so that more secure and reliable use experience is provided for the user.

Description

Technical Field

[0001] The utility model relates to the field of power batteries, and particularly relates to a tray for a power battery, a power battery, a bottom guard plate and a vehicle. Background Art

[0002] During the daily driving of new energy vehicles, the bottom is the most vulnerable part to impact and has extremely high concealment. Once a bottom collision occurs, since the damaged position is difficult to directly observe, users often find it difficult to detect in time, which may cause the battery cells to continue working in a damaged state, greatly increasing the risk of safety accidents such as fires and explosions. Traditionally, the method of detecting such damage relies on disassembling the battery pack. This process not only takes a long time and is costly, but also cannot remind users that the battery pack has been damaged after an accident, affecting the driving safety of users.

[0003] Therefore, there is still room for improvement in how to remind users of the degree of damage to the battery pack during use. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, in the first aspect of the utility model, a tray for a power battery is proposed, which can remind users whether the power battery is damaged without disassembling the power battery.

[0005] In the second aspect of the utility model, a power battery is proposed.

[0006] In the third aspect of the utility model, a bottom guard plate for a power battery is proposed.

[0007] In the fourth aspect of the utility model, a vehicle is proposed.

[0008] The tray for a power battery according to the embodiment of the first aspect of the utility model includes: a frame, a tray bottom plate and a first damage warning layer. The tray bottom plate is connected to the bottom of the frame, and the tray bottom plate and the frame enclose a receiving cavity for installing the battery cells of the power battery; the first damage warning layer is provided on at least one of the frame and the tray bottom plate, and the first damage warning layer contains markers that can be scattered after damage, and the markers are at least one of liquid and particles.

[0009] According to the embodiment of the utility model, the frame and the tray bottom plate are part of the outer shell of the power battery. The frame is equivalent to the side wall of the outer shell of the power battery, and the tray bottom plate is equivalent to the bottom wall of the outer shell of the power battery, and is used to install, fix and protect the battery cells of the power battery. By providing the first damage warning layer, when the power battery is damaged and the damage reaches the first damage warning layer, the markers in the first damage warning layer are scattered on the ground, and users can judge the damage position of the tray through the markers, so as to judge the subsequent treatment method for the power battery.

[0010] That is to say, after the first damage warning layer is set, it can remind the user whether the power battery is damaged without disassembling the power battery. This immediate and intuitive warning mechanism greatly shortens the time from the occurrence of damage to its discovery, enabling the user or maintenance personnel to quickly take necessary measures, such as stopping using the vehicle and seeking professional maintenance, thereby effectively avoiding more serious safety problems that may be caused by the damage of the power battery.

[0011] For the tray of the power battery according to some embodiments of the present invention, at least two of the first damage warning layers are provided at different positions on the tray, and the color and / or form of the markers in each of the first damage warning layers are different.

[0012] For the tray of the power battery according to some embodiments of the present invention, the first damage warning layer includes a packaging film for encapsulating the markers; alternatively, a first sandwich cavity is formed in at least one of the frame and the tray bottom plate, and the markers are injected into the first sandwich cavity.

[0013] For the tray of the power battery according to some embodiments of the present invention, the first damage warning layer is provided on the lower surface of the tray bottom plate; one or more of the first damage warning layers are provided on the lower surface of the tray bottom plate. When there are multiple first damage warning layers, the color and / or form of the markers in each of the first damage warning layers are different.

[0014] The power battery according to the second aspect embodiment of the present invention includes the tray of the power battery according to the first aspect embodiment of the present invention.

[0015] The bottom guard plate of the power battery according to the third aspect embodiment of the present invention is used to be arranged below the power battery to protect the power battery, and includes: a guard plate body; a second damage warning layer, the second damage warning layer is provided on the guard plate body, and markers that can be scattered after damage are contained in the second damage warning layer, and the markers are at least one of liquid and particles.

[0016] For the bottom guard plate of the power battery according to some embodiments of the present invention, at least two of the second damage warning layers are provided at different positions on the bottom guard plate, and the color and / or form of the markers in each of the second damage warning layers are different.

[0017] In some embodiments, the second damage warning layer includes a packaging film for encapsulating the markers; alternatively, a second sandwich cavity is formed in the guard plate body, and the markers are injected into the second sandwich cavity.

[0018] In some embodiments, the guard plate body is a single plate, and the second damage warning layer is provided on the upper surface of the guard plate body; alternatively, the guard plate body is a composite plate and includes at least two composite layers stacked up and down, and the second damage warning layer is sandwiched between at least two of the composite layers.

[0019] The vehicle according to the fourth aspect embodiment of the present invention includes the power battery according to the second aspect embodiment of the present invention, and / or the bottom guard plate of the power battery according to the third aspect embodiment of the present invention.

[0020] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0022] Figure 1 It is a schematic structural diagram of a tray in some embodiments of the present invention;

[0023] Figure 2 It is another schematic structural diagram of a tray in some embodiments of the present invention;

[0024] Figure 3 It is a side view of a tray in some embodiments of the present invention;

[0025] Figure 4 It is a side view of a tray in some other embodiments of the present invention;

[0026] Figure 5 It is a schematic structural diagram of a bottom guard plate in some embodiments of the present invention;

[0027] Figure 6 It is another schematic structural diagram of a bottom guard plate in some embodiments of the present invention;

[0028] Figure 7 It is a side view of a bottom guard plate in some embodiments of the present invention.

[0029] Reference Signs:

[0030] Tray 100, Frame 110, Accommodation Cavity 111, Tray Bottom Plate 120, First Damage Warning Layer 130, Encapsulation Film 131, Bottom Guard Plate 200, Guard Plate Body 210, Composite Layer 211, Second Interlayer Cavity 212, Second Damage Warning Layer 220. Detailed Description of the Embodiments

[0031] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] Reference will be made below to Figure 1 - Figure 4 describe the tray 100 of the power battery according to the embodiment of the first aspect of the present utility model. The tray 100 of the present application is used to mount and fix the power battery.

[0035] As Figure 1 shown, the tray 100 according to the embodiment of the present utility model includes: a frame 110 and a tray bottom plate 120.

[0036] The tray bottom plate 120 is connected to the bottom of the frame 110, and the tray bottom plate 120 and the frame 110 enclose a receiving cavity 111 for mounting the battery cells of the power battery.

[0037] The frame 110 and the tray bottom plate 120 are closely connected to jointly construct a stable and reliable mounting platform for mounting the battery cells of the power battery. That is to say, the frame 110 and the tray bottom plate 120 are part of the housing of the power battery. The frame 110 is equivalent to the side wall of the housing of the power battery, and the tray bottom plate 120 is equivalent to the bottom wall of the housing of the power battery, and is used to mount, fix and protect the battery cells of the power battery.

[0038] Among them, the tray bottom plate 120, as a key component for carrying the battery cells of the power battery, has a certain strength to bear the weight of the battery cells. At the same time, the tray bottom plate 120 also has a certain strength to reduce the impact force from the bottom of the vehicle to ensure the safety and reliability of the battery cells of the power battery. Optionally, the tray bottom plate 120 is connected to the bottom of the frame 110 by welding, screwing, riveting or other connection methods.

[0039] The frame 110, as the support structure of the power battery, has a certain strength to cope with the impacts and vibrations under various complex road conditions. Optionally, the frame 110 is made of high-strength materials, such as aluminum alloy parts or steel parts. At the same time, the shape and size of the frame 110 are designed to ensure that it can closely fit the installation space at the bottom of the vehicle and provide a sufficient protection range to prevent direct impacts on the side of the battery cells from external objects.

[0040] The accommodation cavity 111 formed by enclosing the tray bottom plate 120 and the frame 110 is used to fix and install the battery cells of the power battery. This accommodation cavity 111 can provide a stable installation environment for the battery cells.

[0041] In view of the pain points that it is difficult to immediately detect the damage at the bottom of new energy vehicles in the prior art, and the deficiencies of the traditional inspection methods being cumbersome and time-consuming, the tray 100 in the embodiment of the present utility model further includes: a first damage warning layer 130. The safety inspection process of the power battery is simplified through the first damage warning layer 130, and the warning ability for the damage of the power battery is improved.

[0042] The first damage warning layer 130 is provided on at least one of the frame 110 and the tray bottom plate 120. The first damage warning layer 130 contains markers (not shown in the figure) that can be scattered after damage, and the markers are at least one of liquid and particles.

[0043] For the particles adopted in this article, there is no limitation on the particle size, and they can be powders or coarse particles, etc.

[0044] Combined Figure 2 , specifically, when the first damage warning layer 130 is provided on the frame 110, it is preferably set in the vulnerable areas of the frame 110, such as the bottom or edge part of the frame 110. These areas may directly contact the obstacles on the road surface or suffer the impact force from the bottom during the vehicle driving. Once the frame 110 is deformed or damaged due to an external force exceeding its bearing capacity, the first damage warning layer 130 will be damaged, broken or penetrated accordingly, resulting in the rapid scattering of the markers loaded inside to the bottom of the vehicle or the surrounding ground.

[0045] Combined Figure 1, when the first damage warning layer 130 is provided on the pallet bottom plate 120, the warning effect for damage to the bottom of the power battery can be improved. The pallet bottom plate 120, as the direct supporting surface of the battery cells, bears most of the impact force from the road surface. In this case, if the bottom of the vehicle encounters potholes, bumps or other obstacles, causing the pallet bottom plate 120 to be strongly impacted, the first damage warning layer 130 provided on the bottom plate will respond quickly, and the markers inside it will be released in a preset manner. Whether it is the flow of liquid or the splash of particles, an obvious warning signal can be formed in the shortest time to remind users or maintenance personnel of the possible damage to the bottom of the power battery.

[0046] Optionally, the first damage warning layer 130 is provided between the bottom of the frame 110 and the upper surface of the bottom plate 120, which can not only realize the warning function of the first damage warning layer 130, but also prevent the first damage warning layer 130 from being accidentally damaged.

[0047] To achieve multi-faceted loss warning for the power battery, the first damage warning layer 130 is provided on both the frame 110 and the pallet bottom plate 120. This multi-directional warning mechanism can more comprehensively and accurately capture the losses that the power battery may suffer in multiple directions and multiple parts, providing more timely and effective warning information for users and operators, thereby further enhancing the safety and reliability of the power battery.

[0048] Optionally, the marker is a liquid, such as a fluorescent liquid with a special formula or a colored water-based liquid, etc. After the marker scatters from the first damage warning layer 130, it will immediately form a prominent color mark on the road surface to attract attention. Or, the marker is a particle, such as a colored particle or a micro plastic sheet, and they will be widely scattered to form a scattered area that is easy to identify.

[0049] In some alternative embodiments, the first damage warning layer 130 is configured to contain one or more enclosed spaces, and at least one enclosed space is pre-filled with nitrogen or other inert gases to maintain a positive pressure environment in the enclosed space.

[0050] With this setting, when the bottom of the pallet 100 is subjected to sufficient external force impact, causing the first damage warning layer 130 to be damaged, the positive pressure gas in the enclosed space will be instantly released, forming an impact force. This impact force not only accelerates the scattering process of the markers (such as liquids, particles or other forms of visible objects), but also pushes them to a farther distance, thereby expanding the visible scattered area. In this way, even when the vehicle is in motion or parked in a complex environment, users or operators can more easily observe the warning signal and timely identify the damage to the bottom of the power battery pallet 100.

[0051] In addition, filling the enclosed space with an inert gas helps prevent the internal markers from failing due to oxidation, corrosion, etc., further improving the reliability and durability of the first break warning layer 130.

[0052] In some alternative embodiments, the first break warning layer 130 further includes a gas with an odor. The selection of this gas meets the conditions of being safe, non-toxic, easy to identify, and not causing any adverse effects on the vehicle interior environment or passenger health.

[0053] When an external force impacts the bottom of the frame 110 and / or the tray 100, causing the first break warning layer 130 to break, the gas with an odor in the enclosed space will be quickly released. This unique odor can quickly attract the attention of people around. Even in poor visual conditions (such as at night or in fog) or when attention is distracted, the possible breakage of the tray 100 of the power battery can be sensed by smell, prompting the user or operator to immediately take corresponding measures for inspection and handling, thereby further improving the safety and reliability of the power battery.

[0054] The tray 100 of the present application is not limited to the application of power batteries, but can also be applied in other scenarios that require stable support and break warning, such as: in the aerospace field, the tray 100 can be used to stably support key parts of the aircraft and realize break warning for key parts. Another example: in the logistics and transportation industry, customizing the tray 100 on goods can respond to the breakage of goods in a timely manner.

[0055] When the tray 100 is applied in the power battery scenario, considering the complexity and safety requirements of the power battery, some embodiments of the tray 100 of the power battery of the present utility model add a customized break warning system. This is because different damaged positions of the power battery will directly affect the risk assessment and the urgency of subsequent processing methods. Therefore, in some embodiments of the tray 100 of the power battery of the present utility model, at least two first break warning layers 130 with different positions are provided, and the colors and / or forms of the markers in each first break warning layer 130 are different.

[0056] Combined Figure 1 - Figure 2 First, multiple first break warning layers 130 for different loss positions of the power battery are provided on the tray 100.

[0057] These first break warning layers 130 cover multiple key and potential risk areas of the power battery, achieving multiple coverage of potential break points of the power battery. Markers in the first break warning layers 130 of different risk areas adopt different colors and / or forms, which can intuitively reflect the level of risk at the break position after the first break warning layer 130 is damaged. For example, in the first break warning layer 130 configured in a high-risk area, eye-catching red liquid and / or particles are used as markers. Once the area is damaged, the rapid diffusion of the red liquid and / or particles attracts attention, prompting maintenance personnel that the break here needs to be dealt with immediately to prevent the situation from expanding.

[0058] On the contrary, for areas with relatively low risk levels, another first break warning layer 130 on the tray 100 selects relatively soft colors such as blue or green as markers. These colors not only help to visually distinguish the risk levels, but also provide a certain buffer time for users, allowing them to drive safely to a repair center for professional treatment after discovering the break, rather than having to stop immediately.

[0059] Thus, through the differential design of colors and / or forms of the markers in the first break warning layer 130 of this tray 100, not only the recognition efficiency of the break situation of the power battery is improved, but also the accurate classification of the break risk level is achieved, providing clear guidance and basis for emergency treatment in different situations, and further ensuring the safety of the power battery and the whole vehicle.

[0060] According to the tray 100 of the power battery according to some embodiments of the present invention, the first break warning layer 130 includes a packaging film 131 for encapsulating markers; alternatively, a first sandwich cavity is formed in at least one of the frame 110 and the tray bottom plate 120, and the markers are injected into the first sandwich cavity.

[0061] The implementation methods of the first break warning layer 130 are diverse.

[0062] In some embodiments, the first break warning layer 130 can use a packaging film 131 to encapsulate markers. This packaging film 131 is usually made of high-strength and puncture-resistant material parts to ensure that it will not accidentally break under normal use conditions. When the tray 100 is subjected to an external force and the force reaches the threshold value sufficient to break the packaging film 131, the packaging film 131 will break, releasing the internal markers. These markers can be liquids, gases or solid particles, which will quickly spread or appear to indicate the break position in a prominent manner. Optionally, the packaging film 131 can be fixed by adhesive, glue or other methods; optionally, the packaging film 131 is an aluminum-plastic film or other material parts that can encapsulate liquids, gases or solid particles.

[0063] In some other embodiments, a first sandwich cavity is formed inside at least one of the frame 110 and the tray bottom plate 120. This sandwich cavity is configured to accommodate and fix the marker. Through specific processes such as injection and filling, the marker is safely injected into the sandwich cavity. When the tray 100 or the frame 110 is damaged due to external force, resulting in the destruction of the integrity of the sandwich cavity, the marker inside the sandwich cavity will leak or appear accordingly. Such a setting not only effectively protects the marker from the external environment but also ensures the accuracy and timeliness of the damage warning.

[0064] Regardless of whether the encapsulation film 131 or the sandwich cavity design is adopted, the first damage warning layer 130 can quickly and intuitively provide warning information when the tray 100 is subjected to an external force exceeding the threshold. This not only helps the maintenance personnel quickly locate the damaged position but also enables them to preliminarily evaluate the severity and risk level of the damage based on the characteristics such as the color and form of the marker, so as to take more accurate and effective countermeasures.

[0065] In some other embodiments, a first sandwich cavity is formed inside at least one of the frame 110 and the tray bottom plate 120. The first damage warning layer 130 uses the encapsulation film 131 to encapsulate the marker, and the first damage warning layer 130 is placed inside the first sandwich cavity. Such an assembly is relatively easy.

[0066] As Figure 4 shown, for the tray 100 of the power battery according to some embodiments of the present invention, the first damage warning layer 130 is provided on the lower surface of the tray bottom plate 120; one or more first damage warning layers 130 are provided on the lower surface of the tray bottom plate 120. When there are multiple first damage warning layers 130, the colors and / or forms of the markers in each first damage warning layer 130 are different.

[0067] In the above technical solution, the first damage warning layer 130 is provided on the lower surface of the tray bottom plate 120. Selecting this position for setting is not only convenient for installation and maintenance but also can provide an intuitive and clear warning signal when damage occurs.

[0068] On the lower surface of the tray bottom plate 120, one or more first damage warning layers 130 can be provided to meet different risk assessment and monitoring requirements. When multiple first damage warning layers 130 are adopted, the markers in each first damage warning layer 130 are designed differently in terms of color and / or form. This difference is not only reflected in the color, by selecting markers of different hues to distinguish different risk levels or damage types; but also in the form, such as markers in different forms like liquid, solid particles or gas, which each have unique diffusion or appearance characteristics, can further enrich the information volume of the damage warning, provide multi-sensory stimulation to users, and improve the efficiency of users' damage recognition.

[0069] When the power battery or the tray 100 is damaged due to external force, the first damage warning layer 130 at the corresponding position will be triggered. The markers will be released and diffused according to a preset manner to form a prominent warning pattern or color change. Maintenance personnel only need to observe the status of the warning layer on the lower surface of the tray bottom plate 120 to quickly determine the damage position and risk level, and then take corresponding emergency treatment measures.

[0070] In addition, the setting of multiple first damage warning layers 130 also allows for more area division and risk assessment of the power battery. Different areas can be configured with markers of different colors and forms according to factors such as their importance and vulnerability to achieve more accurate damage monitoring and warning.

[0071] The power battery according to the second aspect embodiment of the present utility model includes the tray 100 of the power battery according to the first aspect embodiment of the present utility model.

[0072] The power battery according to the embodiment of the present utility model realizes firm support for the battery cells and real-time damage monitoring by integrating the tray 100 of the power battery in the first aspect embodiment, improving the overall performance and safety of the power battery.

[0073] As Figure 5 - Figure 7 As shown, the bottom guard plate 200 of the power battery according to the third aspect embodiment of the present utility model is used to be arranged under the power battery to protect the power battery. The bottom guard plate 200 includes: a guard plate body 210 and a second damage warning layer 220. The second damage warning layer 220 is arranged on the guard plate body 210. The second damage warning layer 220 is filled with markers that can be scattered after damage, and the markers are at least one of liquid and particles.

[0074] Due to being supported and fixed by the tray 100, the power battery ensures its stable installation in the vehicle. Also, through the first damage warning layer 130 arranged on the tray 100, when the power battery suffers potential damage, it can emit a warning signal, thereby improving the safety monitoring and warning ability of the power battery.

[0075] Setting the bottom guard plate 200 under the power battery can further enhance the protection effect. Combining Figure 5 , the bottom guard plate 200 includes: a guard plate body 210. The guard plate body 210 is made of a high-strength and corrosion-resistant material part to ensure that it can withstand the impact force from the bottom and reduce the damage to the power battery caused by external force.

[0076] To enhance the warning ability of the power battery, the bottom guard plate 200 further includes: a second damage warning layer 220 provided on the guard plate body 210. The second damage warning layer 220 contains markers that can be scattered after damage, and these markers include at least one of liquids and particles. When the bottom guard plate 200 is damaged due to external force, the markers will be quickly released and scattered, forming an obvious warning signal. The liquid markers may quickly spread and leave clear traces, while the particle markers may be scattered around the damaged area, enabling maintenance personnel to quickly identify and locate the damaged position.

[0077] In addition, the markers in the second damage warning layer 220 can also be adjusted in terms of color, shape or composition as needed to meet different monitoring and warning requirements. For example, markers of different colors or shapes can represent different damage types or risk levels, thus providing multiple warning messages.

[0078] According to the bottom guard plate 200 of the power battery according to some embodiments of the present invention, at least two second damage warning layers 220 with different positions are provided on the bottom guard plate 200, and the colors and / or forms of the markers in each second damage warning layer 220 are different.

[0079] Specifically, at least two second damage warning layers 220 provided on the bottom guard plate 200 are distributed at different key positions, which are usually areas where the bottom guard plate 200 is easily damaged when subjected to external force impacts, such as corners, central load-bearing areas or important interfaces near the power battery. Such a layout can ensure that when different parts of the bottom guard plate 200 are damaged, different warning signals can be provided in a timely manner through different markers.

[0080] In some embodiments, the second damage warning layer 220 includes a packaging film 131 for encapsulating the markers; alternatively, a second sandwich cavity 212 is formed in the guard plate body 210, and the markers are injected into the second sandwich cavity 212.

[0081] For example: The second damage warning layer 220 can use the packaging film 131 to encapsulate the markers. This packaging film 131 is usually made of high-strength and puncture-resistant material parts to ensure that it will not accidentally rupture under normal use conditions. When the tray 100 is subjected to external force, and the force reaches a threshold sufficient to damage the packaging film 131, the packaging film 131 will rupture, releasing the internal markers. These markers can be liquids, gases or solid particles, and they will quickly spread or appear to indicate the damaged position in a prominent manner.

[0082] In some embodiments, the packaging film 131 can be fixed by means of adhesive, glue or other methods.

[0083] Optionally, the packaging film 131 is an aluminum-plastic film or other material parts that can encapsulate liquids, gases or solid particles.

[0084] For another example: A second sandwich cavity 212 is formed inside at least one of the frame 110 and the tray bottom plate 120. This sandwich cavity is configured to accommodate and fix a marker. Through specific processes such as injection and filling, the marker is safely injected into the sandwich cavity. When the tray 100 or the frame 110 is damaged due to external forces, resulting in the destruction of the integrity of the sandwich cavity, the marker inside the sandwich cavity will leak or become visible accordingly. Such an arrangement not only effectively protects the marker from the external environment but also ensures the accuracy and timeliness of the breakage warning.

[0085] Regardless of whether the encapsulation film 131 or the sandwich cavity design is adopted, the second breakage warning layer 220 can quickly and intuitively provide warning information when the tray 100 is subjected to external forces exceeding the threshold. This not only helps maintenance personnel quickly locate the breakage position but also enables a preliminary assessment of the severity and risk level of the breakage based on characteristics such as the color and shape of the marker, so as to take more precise and effective countermeasures.

[0086] In some other embodiments, a second sandwich cavity is formed inside the encapsulation film 131. The second breakage warning layer 220 uses the encapsulation film to encapsulate the marker, and the second breakage warning layer 220 is placed inside the second sandwich cavity. Such an assembly is relatively easy.

[0087] In some embodiments, the guard plate body 210 is a single plate, and the second breakage warning layer 220 is provided on the upper surface of the guard plate body 210; alternatively, the guard plate body 210 is a composite plate and includes at least two composite layers 211 stacked up and down, and the second breakage warning layer 220 is sandwiched between at least two composite layers 211.

[0088] When the guard plate body 210 is a single plate, by setting the second breakage warning layer 220 on the upper surface of the guard plate body 210, the manufacturing difficulty can be reduced because it avoids processing inside the guard plate. At the same time, the position of the upper surface makes the breakage warning more intuitive because once the guard plate is damaged, the second breakage warning layer 220 on the upper surface will be affected first and display the breakage warning signal.

[0089] When the guard plate body 210 is a composite plate, its composite structure provides higher strength and better protection performance. The composite plate is formed by laminating multiple composite layers 211, and these composite layers 211 can adopt the same or different material layers to meet the required performance requirements. For example, the outer layer may adopt a wear-resistant and corrosion-resistant material layer, while the inner layer may adopt a high-strength and energy-absorbing material layer. Between these composite layers 211, the second breakage warning layer 220 is sandwiched to provide a warning when the guard plate is damaged. Optionally, the composite layer 211 includes one or any combination of a continuous fiber-reinforced fiberglass composite layer, a steel plate layer, and an energy-absorbing honeycomb panel layer.

[0090] Optionally, the second damage warning layer 220 can be firmly clamped between the composite layers 211 by means of adhesives, hot pressing or other methods. This clamping method ensures that the second damage warning layer 220 can deform or break together with the composite layer 211 when the guard plate is impacted, so as to issue a warning signal in a timely manner.

[0091] In the structural design of the composite board, multiple second damage warning layers 220 can also be provided as needed, respectively located between different composite layers 211. In this way, even if the guard plate is impacted multiple times or damaged at different positions, the depth of the loss can be prompted to the user through the warning layers of different layers.

[0092] In some alternative embodiments, the multiple composite layers 211 form a single piece, and the second damage warning layer 220 is provided on one side of the single piece.

[0093] A vehicle according to an embodiment of the fourth aspect of the present invention includes a power battery according to an embodiment of the second aspect of the present invention, and / or a bottom guard plate 200 of a power battery according to an embodiment of the third aspect of the present invention.

[0094] By adopting the power battery according to the embodiment of the second aspect of the present invention, while ensuring the stable installation of the power battery inside the vehicle body, the vehicle also adds a damage warning function. This function enables the power battery to quickly issue a warning signal when suffering potential damage or actual breakage, thereby improving the overall safety and reliability of the vehicle.

[0095] Alternatively, by adopting the bottom guard plate 200 of a power battery according to an embodiment of the third aspect of the present invention, the damage warning function can also be correspondingly increased. The second damage warning layer 220 on the bottom guard plate 200 can quickly issue a warning signal when the guard plate is damaged, helping the user or operator to discover and handle potential safety hazards in a timely manner.

[0096] It should be noted that since the bottom structure of the vehicle may face various challenges from the road surface during driving, such as potholes, bumps, collisions, etc. These external factors often cause damage to the bottom of the vehicle, but due to the hidden location, it is difficult for the user to detect, which may lead to more serious safety problems. In order to effectively enhance the immediate warning ability of potential losses at the bottom of the vehicle, the vehicle of the present application can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The present invention effectively improves the damaged warning effect of the vehicle bottom when suffering external impact by integrating the damage warning layer.

[0097] The following references Figure 1 - Figure 4A tray 100 according to an embodiment of the present invention is described in detail with a specific embodiment. It should be understood that the following description is only an exemplary illustration and not a specific limitation of the invention.

[0098] The tray 100 includes: a frame 110, a tray bottom plate 120, and a first damage warning layer 130.

[0099] The tray bottom plate 120 is connected to the bottom of the frame 110. The tray bottom plate 120 and the frame 110 enclose a receiving cavity 111 for installing the battery cells of the power battery.

[0100] A plurality of first damage warning layers 130 with different positions are provided on the tray 100, and each first damage warning layer 130 is adhered to the lower surface of the tray bottom plate 120 by an adhesive.

[0101] Each first damage warning layer 130 includes: a packaging film 131 and a marker.

[0102] The packaging of each first damage warning layer 130 contains markers that can be scattered after damage, and the colors of the markers in each first damage warning layer 130 are different.

[0103] The following refers to Figure 5 - Figure 7 A bottom guard plate 200 according to an embodiment of the present invention is described in detail with a specific embodiment. It should be understood that the following description is only an exemplary illustration and not a specific limitation of the invention.

[0104] The bottom guard plate 200 includes: a guard plate body 210 and a second damage warning layer 220.

[0105] The guard plate body 210 includes: composite layers 211 stacked up and down, and a second sandwich cavity 212 is formed between two adjacent composite layers 211. The second damage warning layer 220 is arranged in the second sandwich cavity 212.

[0106] The second damage warning layer 220 includes markers.

[0107] Other components of the tray 100 or the bottom guard plate 200 according to the embodiments of the present invention, such as power batteries and vehicles, etc., and operations are known to those of ordinary skill in the art, and will not be described in detail here.

[0108] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0109] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A tray for a power battery, characterized in that: include: frame; A tray bottom plate, the tray bottom plate is connected to the bottom of the frame, and the tray bottom plate and the frame together form a receiving cavity for installing the battery cells of the power battery; The first damage warning layer is arranged on at least one of the frame and the bottom plate of the tray. The first damage warning layer contains a marker that can be scattered after being damaged. The marker is at least one of a liquid and particles.

2. The power battery tray according to claim 1, characterized in that: At least two first damage warning layers at different positions are arranged on the tray, and the color and / or shape of the marker in each first damage warning layer is different.

3. The power battery tray according to claim 1, characterized in that: The first damage warning layer includes a packaging film for packaging the marker; Alternatively, a first interlayer cavity is formed in at least one of the frame and the tray bottom plate, and the marker is injected into the first interlayer cavity.

4. The power battery tray according to any one of claims 1 to 3, characterized in that: The first damage warning layer is arranged on the lower surface of the bottom plate of the tray; One or more first damage warning layers are provided on the lower surface of the tray bottom plate. When multiple first damage warning layers are provided, the color and / or shape of the marker in each first damage warning layer is different.

5. A power battery, characterized in that: A tray comprising a power battery according to any one of claims 1 to 4.

6. A bottom guard plate of a power battery, used to be arranged under the power battery to protect the power battery, characterized in that: include: Guard plate body; The second damage warning layer is arranged on the guard plate body, and the second damage warning layer contains a marker that can be scattered after being damaged, and the marker is at least one of a liquid and a particle.

7. The bottom guard plate of the power battery according to claim 6, characterized in that: At least two second damage warning layers at different positions are arranged on the bottom guard plate, and the color and / or shape of the marker in each second damage warning layer is different.

8. The bottom guard plate of the power battery according to claim 6, characterized in that: The second damage warning layer includes a packaging film for packaging the marker; Alternatively, a second interlayer cavity is formed in the guard plate body, and the marker is injected into the second interlayer cavity.

9. The bottom guard plate of the power battery according to any one of claims 6 to 8, characterized in that: The guard plate body is a single plate, and the second damage warning layer is arranged on the upper surface of the guard plate body; Alternatively, the guard plate body is a composite plate and includes at least two composite layers stacked up and down, and the second damage warning layer is sandwiched between at least two of the composite layers.

10. A vehicle, characterized in that: It comprises the power battery according to claim 5, and / or the bottom guard plate of the power battery according to any one of claims 6-9.

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