Flame-retardant heat-insulating top plate of battery box

Abstract

The utility model discloses a flame-retardant heat-insulation top plate of a battery box, the flame-retardant heat-insulation top plate comprises a flame-retardant layer, an insulating layer, a structural layer, an insulating layer and a heat dissipation layer from top to bottom, the structural layer is a structural foundation of a bottom plate, the insulating layers are sprayed on the upper surface and the lower surface of the insulating layer respectively, the flame-retardant layer is attached to the insulating layer on the upper surface of the structural layer, and the heat dissipation layer is attached to the insulating layer on the lower surface of the structural layer. The heat dissipation layer is fixedly adhered to the insulating layer on the lower surface of the structural layer; the heat dissipation layer comprises a heat dissipation silica gel layer internally provided with a flow channel. The design of the flame-retardant layer and the insulating layer of the top plate effectively improves the fireproof and insulating properties of the battery box, reduces the risk of fire, and provides higher safety guarantee for new energy vehicles.

Description

Technical Field

[0001] The present application relates to the field of new energy, and in particular to a flame retardant and heat insulating top plate for a battery box. Background Art

[0002] Battery safety is particularly important in the development of the new energy vehicle industry. With the popularity of electric vehicles, the safety performance requirements for battery boxes have also increased. Currently, many battery boxes rely on base plates made of metal materials such as aluminum alloys, which perform well in providing physical protection, such as withstanding a certain degree of impact and pressure, and protecting the battery from direct physical damage. However, when it comes to fire safety and thermal management, these traditional materials show their limitations.

[0003] The high thermal conductivity of metal materials such as aluminum alloys can become a serious problem when a battery fails, such as overheating or short circuiting. In this case, the overheated battery may quickly transfer heat to adjacent battery cells, causing a sharp rise in temperature, which can trigger a chain reaction. This chain reaction will not only damage the battery pack, but also potentially lead to thermal runaway, which is one of the main causes of battery fires and explosions. In addition, the metal base plate also has obvious deficiencies in fire resistance and cannot effectively block the spread of flames and high temperatures.

[0004] In an emergency, such as a fire in the battery box, these defects may cause the fire to spread rapidly, significantly shortening the escape time of passengers. Therefore, it is crucial to improve the flame retardant and heat insulation capabilities of the battery box floor. This not only reduces the risk of fire, but also buys more time for passengers and rescuers in an emergency, reducing the risk of casualties.

[0005] In view of this, it is necessary to develop a new type of flame retardant and heat-insulating roof panel. Utility Model Content

[0006] The purpose of the present application is to overcome at least one of the shortcomings of the prior art and to provide a flame retardant and heat-insulating top plate for a battery box, which adopts a composite structure and includes a flame retardant and heat-insulating layer, which can significantly improve the safety performance of the battery box, provide more escape time for occupants, and increase the market competitiveness of new energy vehicles.

[0007] To achieve the above-mentioned purpose, the present application discloses a flame-retardant and heat-insulating top plate of a battery box, which comprises, from top to bottom, a flame-retardant layer, an insulating layer, a structural layer, an insulating layer, and a heat dissipation layer. The structural layer is the structural basis of the bottom plate, and the upper and lower surfaces of the insulating layer are respectively sprayed with insulating layers. The flame-retardant layer is attached to the insulating layer on the upper surface of the structural layer, and the heat dissipation layer is adhered to the insulating layer on the lower surface of the structural layer. The heat dissipation layer includes a heat dissipation silicone layer with a flow channel provided therein, and the flow channel is connected to the outside to realize the heat dissipation of the bottom plate to the battery.

[0008] Furthermore, the heat dissipation silicone layer in the heat dissipation layer is formed by splicing multiple pieces.

[0009] Furthermore, the flow channel is a pipeline, and the pipeline is connected to one of the cooling air flow or the cooling liquid.

[0010] Furthermore, the structural layer is a steel plate.

[0011] Furthermore, the edge of the structural layer is preset with a mounting position for connection and cooperation with other parts of the battery box.

[0012] Furthermore, a plurality of temperature sensors are preset on the heat dissipation layer, and each temperature sensor is evenly arranged on the heat dissipation layer. Each temperature sensor is connected to a receiving end of an external device through a cable.

[0013] Furthermore, a temperature sensor is provided on the flame retardant layer, and each temperature sensor is in contact with the structural layer and is used to detect the temperature of the structural layer. The temperature sensor is connected to a receiving end of an external device through a cable.

[0014] Furthermore, the structural layer is a corrugated plate with stiffening ribs, the flame retardant layer fills the upper surface of the structural layer and is higher than the structural layer, the lower surface is filled by the heat dissipation layer, and the flow channel is located in the concave area of ​​the corrugated plate.

[0015] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0016] 1. Significantly improve safety performance: The flame retardant layer and insulation layer design of the top plate effectively improve the fire resistance and insulation performance of the battery box, reduce the risk of fire, and provide higher safety protection for new energy vehicles.

[0017] 2. Optimize heat dissipation management: The heat dissipation silicone layer with built-in flow channels and the connection with the external cooling system effectively manage and control the temperature of the battery to prevent overheating, thereby preventing thermal runaway and fire.

[0018] 3. Enhanced structural stability and durability: The structural layer is made of steel plate, and its structural stability and durability are enhanced through longitudinal and transverse reinforcement ribs, which improves the overall strength and durability of the battery box and better protects the battery cells.

[0019] Additional aspects and other advantages of the present disclosure will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] After reading the following detailed description in conjunction with the accompanying drawings, you will have a better understanding of various aspects of the present disclosure. The positions, sizes, and ranges of various structures shown in the accompanying drawings sometimes do not represent the actual positions, sizes, and ranges. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of an embodiment disclosed in this application.

[0022] Figure 2 It is a structural schematic diagram of an embodiment disclosed in the present application from another perspective.

[0023] Figure 3 yes Figure 2 Enlarged view of point A.

[0024] Figure 4 It is a structural explosion diagram of an embodiment disclosed in the present application. DETAILED DESCRIPTION

[0025] The present disclosure will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0026] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0027] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, the techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification.

[0028] The singular forms "a", "the" and "the" used in the specification include the plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. The terms "between X and Y" and "between approximately X and Y" used in the specification should be interpreted as including X and Y. The term "between approximately X and Y" used in this specification means "between approximately X and approximately Y", and the term "from approximately X to Y" used in this specification means "from approximately X to approximately Y".

[0029] In the specification, when an element is said to be "on", "attached", "connected", "coupled", or "contacting" another element, the element may be directly on, attached, connected, coupled, or contacting another element, or there may be an intermediate element. In contrast, when an element is said to be "directly" "on", "directly attached", "directly connected", "directly coupled", or "directly contacting" another element, there will be no intermediate element. In the specification, a feature is arranged "adjacent" to another feature, which may refer to a feature having a portion that overlaps with an adjacent feature or a portion that is located above or below an adjacent feature.

[0030] In the specification, spatial relational terms such as "upper", "lower", "left", "right", "front", "back", "higher", "lower", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned over, features previously described as being "below" other features may now be described as being "above" the other features. The device may also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0031] Example:

[0032] Figures 1 to 4 An exemplary structure for implementing the present application is shown. As shown in the figure, the present embodiment relates to a flame retardant and heat-insulating top plate of a battery box, which is designed to improve the safety and efficiency of the battery box of a new energy vehicle. The top plate is composed of a multi-layer structure, which is composed of a flame retardant layer 1, an insulating layer, a structural layer 2, another insulating layer and a heat dissipation layer 3 from top to bottom. Each layer has a specific function and works together to achieve optimal protection and performance.

[0033] Specifically, the structural layer 2 is the core of the entire top plate, providing the necessary physical strength and support. This layer is composed of a corrugated plate with stiffening ribs, usually made of steel plate material and stamped to increase the overall strength and durability. The edge of the structural layer 2 is pre-set with mounting positions for connecting with other parts of the battery box.

[0034] The stiffening ribs are formed by a bending structure that intersects horizontally and vertically.

[0035] As a more specific description of this embodiment, the flame retardant layer 1 is in close contact with the upper surface of the structural layer 2, and the insulating layer covers the upper and lower surfaces of the structural layer 2 respectively. The heat dissipation layer 3 is located below the structural layer 2 and adheres to the insulating layer on the lower surface. The heat dissipation layer 3 is composed of multiple heat dissipation silicone layers, and is provided with flow channels 4 formed by pipes. These flow channels 4 can be connected to external cooling airflow or coolant to achieve effective heat dissipation.

[0036] Specifically, in this embodiment, the flame retardant layer 1 plays a vital role. The flame retardant layer 1 has a flat and continuous structure, directly covering the top of the battery box, adjacent to the insulation layer. It is made of high-performance flame retardant materials, such as flame retardant polymers, specially treated fiber materials or high-performance flame retardant composite materials, to ensure that its structural stability and integrity can be maintained at high temperatures. The thickness and density of this layer need to be adjusted to provide the best flame retardant effect while avoiding excessive increase in the weight and volume of the top plate.

[0037] It is understandable that the application of the flame retardant layer 1 significantly improves the safety performance of the battery box in the event of a fire and effectively reduces the risk of fire. In the event of a fire, this layer can buy valuable escape and rescue time for passengers and rescuers. In general, the flame retardant layer 1 not only enhances the overall fire resistance of the battery box, but also improves the market competitiveness of electric vehicles and the trust of consumers.

[0038] In this embodiment, the heat dissipation layer 3 is used for efficient heat management and heat dissipation. This layer is located at the bottom of the battery box top plate, close to the insulation layer below the structural layer, and is composed of multiple heat dissipation silicone layers spliced ​​together to form a continuous heat dissipation surface. Built-in flow channels 4 are formed inside the heat dissipation silicone layer. These flow channels 4 are made of high temperature and corrosion resistant materials, such as stainless steel or special plastics, to ensure long-term reliability.

[0039] It is understandable that the main purpose of the heat dissipation layer 3 is to effectively disperse the heat inside the battery box and prevent the battery from overheating. It is connected to an external cooling system (such as airflow or coolant) so that the cooling medium in the flow channel 4 can take away excess heat, thereby controlling the temperature and preventing the formation of hot spots. This design not only improves the performance and life of the battery, keeps the battery at the optimal operating temperature through effective heat dissipation, but also reduces the risk of thermal runaway caused by excessive heat accumulation, which is one of the main causes of battery fires and explosions. Therefore, the heat dissipation layer 3 not only improves the efficiency of the battery system, but also enhances the overall safety, providing higher safety protection for electric vehicles.

[0040] For this embodiment, the design of the flame retardant and heat-insulating top plate of the battery box integrates a multi-layer structure, and each layer works together to provide comprehensive protection and high efficiency. The combination of the flame retardant layer 1 and the insulating layer ensures effective protection against fire and electrical failures, greatly improving safety. The structural layer 2 provides a solid physical support for the battery box and protects the battery from external impact and pressure. The heat dissipation layer 3 effectively controls the battery temperature and prevents overheating through the built-in flow channel 4 and the cooling system connected to the outside, thereby extending the battery life and improving its efficiency.

[0041] The above design not only increases the safety and durability of the battery box, but also provides more escape time for passengers in emergency situations, such as when the battery catches fire, and improves the safety standards of the entire vehicle. Therefore, the flame-retardant and heat-insulating top plate of the battery box is of great significance to improving the safety, efficiency and market competitiveness of new energy vehicles.

[0042] Although the exemplary embodiments of the present disclosure have been described, it should 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 scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A flame retardant and heat insulating top plate of a battery box, characterized in that: From top to bottom, they are respectively a flame retardant layer, an insulating layer, a structural layer, an insulating layer, and a heat dissipation layer. The structural layer is the structural basis of the bottom plate. The upper and lower surfaces of the insulating layer are respectively sprayed with insulating layers. The flame retardant layer is attached to the insulating layer on the upper surface of the structural layer. The heat dissipation layer is adhered to the insulating layer on the lower surface of the structural layer. The heat dissipation layer includes a heat dissipation silicone layer with a flow channel inside. The flow channel is connected to the outside to realize the heat dissipation of the bottom plate to the battery.

2. A flame retardant and heat insulating top plate of a battery box as claimed in claim 1, characterized in that: The heat dissipation silicone layer in the heat dissipation layer is formed by splicing multiple pieces.

3. The flame retardant and heat insulating top plate of a battery box as claimed in claim 1, characterized in that: The flow channel is a pipeline, and the pipeline is connected to one of the cooling air flow or the cooling liquid.

4. The flame retardant and heat insulating top plate of a battery box as claimed in claim 1, characterized in that: The structural layer is a steel plate.

5. The flame retardant and heat insulating top plate of a battery box as claimed in claim 1, characterized in that: The edge of the structural layer is preset with a mounting position for connection and cooperation with other parts of the battery box.

6. The flame retardant and heat insulating top plate of a battery box as claimed in claim 1, characterized in that: A plurality of temperature sensors are preset on the heat dissipation layer, and each temperature sensor is evenly arranged on the heat dissipation layer. Each temperature sensor is led out through a cable and connected to a receiving end of an external device.

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