Flame-retardant damping epoxy board

Abstract

The utility model discloses a flame-retardant shock-absorbing epoxy board, which relates to the technical field of epoxy boards and comprises a central heat-conducting layer, a shock-absorbing energy-absorbing layer fixedly connected to the outer side of the central heat-conducting layer, an electromagnetic shielding layer fixedly connected to the outer side of the shock-absorbing energy-absorbing layer, and a structure reinforcing layer fixedly connected to the outer side of the electromagnetic shielding layer. The outer side of the structure enhancement layer is fixedly connected with the flame-retardant layer, and the electromagnetic shielding layer is a composite material layer which is formed by mixing carbon nanotubes with epoxy resin and has high conductivity, so that the problems that remarkable electromagnetic radiation is generated and electromagnetic interference is generated on an electronic system of an automobile in the charging and discharging process of the automobile power battery are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of epoxy boards, in particular to a flame retardant and shock-absorbing epoxy board. Background Art

[0002] In the modern automotive industry, the rapid development of electric and hybrid vehicles has led to a significant increase in demand for power battery technology. These power batteries, particularly lithium-ion batteries, are favored for their high energy density, long lifespan, and relatively low environmental impact. Automotive power batteries generate significant electromagnetic radiation during charging and discharging, especially during rapid charging or high-current discharge. Furthermore, the high-frequency operation of battery management systems and other battery-related electronic control units can also generate electromagnetic interference. Electromagnetic interference can interfere with a vehicle's wireless communications, navigation systems, in-vehicle entertainment systems, and critical safety systems such as anti-lock braking systems and electronic stability programs through radiation or conduction pathways.

[0003] Epoxy sheets are often used as wrapping materials for automotive batteries. Existing epoxy sheets used for wrapping automotive batteries only have shock-resistant and flame-retardant effects, and do not have the function of shielding the battery's electromagnetic interference. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a flame retardant and shock absorbing epoxy board to solve the above-mentioned problem.

[0005] In order to achieve the above purpose, the utility model proposes a flame retardant and shock absorbing epoxy board.

[0006] As a further solution of the utility model:

[0007] A flame retardant and shock-absorbing epoxy board includes a central heat-conducting layer, a shock-absorbing and energy-absorbing layer is fixedly connected to the outer side of the central heat-conducting layer, an electromagnetic shielding layer is fixedly connected to the outer side of the electromagnetic shielding layer, a structural reinforcement layer is fixedly connected to the outer side of the structural reinforcement layer, and a flame retardant layer is fixedly connected to the outer side of the structural reinforcement layer.

[0008] Furthermore, the central heat-conducting layer adopts a composite material of a heat-conducting but electrically insulating heat-conducting epoxy resin and aluminum oxide filled with heat-conducting particles.

[0009] Furthermore, the shock-absorbing and energy-absorbing layer adopts modified polyurethane foam and maintains a closed-cell foam structure.

[0010] Furthermore, the electromagnetic shielding layer is a composite material layer with high conductivity formed by mixing carbon nanotubes with epoxy resin.

[0011] Furthermore, the structural reinforcement layer adopts a glass fiber material that reinforces the epoxy resin matrix, and the glass fiber adopts a plain weave structure.

[0012] Furthermore, the flame retardant layer adopts high-performance flame retardant epoxy resin mixed with aluminum hydroxide inorganic flame retardant, and adds micro-nano-level flame retardant coating on the surface.

[0013] Furthermore, the edge of the plate is composed of a central heat-conducting layer, a shock-absorbing and energy-absorbing layer, an electromagnetic shielding layer, a structural reinforcement layer and a flame-retardant layer, wherein the shock-absorbing and energy-absorbing layer, the electromagnetic shielding layer, the structural reinforcement layer and the flame-retardant layer are symmetrically arranged with right-angle bends about the central heat-conducting layer, and form upper and lower symmetrical protrusions on the edge of the plate, and the fixing strip is slidably connected to the protrusions on the edge of the plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] By setting up an electromagnetic shielding layer, which is a highly conductive composite material layer formed by mixing carbon nanotubes with epoxy resin, it effectively shields the electromagnetic interference generated by the battery and its management system, protects the normal operation of other electronic equipment inside the vehicle, and improves the electromagnetic compatibility of the system.

[0016] The shock-absorbing and energy-absorbing layer, the electromagnetic shielding layer, the structural reinforcement layer and the flame-retardant layer are symmetrically arranged with right-angle bends about the central heat-conducting layer to reduce the probability of stress stratification at the edge and thus stratification at the center of the plate. A groove is provided on the fixing strip that fits the raised edge of the plate. The fixing strip is slidably connected to the plate to further reduce the probability of stress stratification at the edge of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 This is a schematic structural diagram of the fixing strip of the utility model.

[0019] In the figure: 1. Central heat conduction layer; 2. Shock absorption and energy absorption layer; 3. Electromagnetic shielding layer; 4. Structural reinforcement layer; 5. Flame retardant layer; 6. Fixing strip. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-2As shown, a flame retardant and shock-absorbing epoxy board includes a central heat-conducting layer 1, a shock-absorbing and energy-absorbing layer 2 is fixedly connected to the outside of the central heat-conducting layer 1, an electromagnetic shielding layer 3 is fixedly connected to the outside of the shock-absorbing and energy-absorbing layer 2, a structural reinforcement layer 4 is fixedly connected to the outside of the electromagnetic shielding layer 3, and a flame retardant layer 5 is fixedly connected to the outside of the structural reinforcement layer 4.

[0022] The central heat-conducting layer 1 is made of a composite material of a heat-conducting but electrically insulating heat-conducting epoxy resin and heat-conducting particles of aluminum oxide.

[0023] The shock-absorbing and energy-absorbing layer 2 is made of modified polyurethane foam and maintains a closed-cell foam structure.

[0024] The electromagnetic shielding layer 3 is a composite material layer with high conductivity formed by mixing carbon nanotubes with epoxy resin.

[0025] The structural reinforcement layer 4 is made of glass fiber material that reinforces an epoxy resin matrix, and the glass fiber adopts a plain weave structure.

[0026] The flame retardant layer 5 is made of high-performance flame retardant epoxy resin mixed with aluminum hydroxide inorganic flame retardant, and a micro-nano flame retardant coating is added on the surface.

[0027] The edge of the plate is composed of a central heat-conducting layer 1, a shock-absorbing and energy-absorbing layer 2, an electromagnetic shielding layer 3, a structural reinforcement layer 4 and a flame-retardant layer 5, wherein the shock-absorbing and energy-absorbing layer 2, the electromagnetic shielding layer 3, the structural reinforcement layer 4 and the flame-retardant layer 5 are symmetrically arranged with right-angle bends about the central heat-conducting layer 1, and form upper and lower symmetrical protrusions at the edge of the plate, and the fixing strip 6 is slidably engaged with the protrusions at the edge of the plate.

[0028] Working principle:

[0029] Central thermal layer 1: Made of a composite material of thermally conductive but electrically insulating epoxy resin and aluminum oxide filled with thermally conductive particles; ensures good thermal conductivity, effectively dissipates heat generated by battery operation, prevents hot spots from forming, while maintaining electrical insulation to avoid electrical failures.

[0030] Shock-absorbing and energy-absorbing layer 2: Modified polyurethane foam maintains a closed-cell foam structure; absorbs and disperses external impact energy through physical deformation, effectively reducing vibration and protecting the internal structure from damage by impact and vibration.

[0031] Electromagnetic shielding layer 3: A highly conductive composite material layer formed by mixing carbon nanotubes with epoxy resin; it effectively shields electromagnetic interference generated by the battery and its management system, protecting the normal operation of other electronic equipment inside the vehicle and improving the electromagnetic compatibility of the system.

[0032] Structural reinforcement layer 4: Glass fiber material that reinforces the epoxy resin matrix and adopts a plain weave structure; it improves the mechanical strength and rigidity of the board, increases its load-bearing capacity and impact resistance, and provides solid physical protection for the battery.

[0033] Flame retardant layer 5: High-performance flame-retardant epoxy resin mixed with aluminum hydroxide inorganic flame retardant, and a micro-nano flame retardant coating added to the surface; provides primary flame retardant protection, can effectively prevent the spread of flames in the early stages of a fire, and reduce the fire by releasing non-toxic smoke and gas.

[0034] The shock-absorbing and energy-absorbing layer 2, the electromagnetic shielding layer 3, the structural reinforcement layer 4 and the flame-retardant layer 5 are respectively symmetrically arranged with right-angle bends about the central heat-conducting layer 1 to reduce the probability of stress stratification at the edges and thus stratification at the center of the plate body. A groove is provided on the fixing strip 6 that fits the raised edge of the plate body. The fixing strip 6 is slidably connected to the plate body to further reduce the probability of stress stratification at the edge of the plate body.

[0035] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A flame retardant and shock absorbing epoxy board, characterized in that: The invention comprises a central heat-conducting layer (1), a shock-absorbing and energy-absorbing layer (2) is fixedly connected to the outer side of the central heat-conducting layer (1), an electromagnetic shielding layer (3) is fixedly connected to the outer side of the shock-absorbing and energy-absorbing layer (2), a structural reinforcement layer (4) is fixedly connected to the outer side of the electromagnetic shielding layer (3), and a flame-retardant layer (5) is fixedly connected to the outer side of the structural reinforcement layer (4).

2. The flame retardant and shock absorbing epoxy board according to claim 1, characterized in that: The central heat-conducting layer (1) is made of a composite material of heat-conducting but electrically insulating heat-conducting epoxy resin and heat-conducting particle aluminum oxide.

3. The flame retardant and shock absorbing epoxy board according to claim 1, characterized in that: The shock-absorbing and energy-absorbing layer (2) adopts modified polyurethane foam and maintains a closed-cell foam structure.

4. The flame retardant and shock absorbing epoxy board according to claim 1, characterized in that: The electromagnetic shielding layer (3) is a composite material layer with high conductivity formed by mixing carbon nanotubes with epoxy resin.

5. The flame retardant and shock absorbing epoxy board according to claim 1, characterized in that: The structural reinforcement layer (4) is made of glass fiber material that reinforces the epoxy resin matrix, and the glass fiber adopts a plain weave structure.

6. The flame retardant and shock absorbing epoxy board according to claim 1, characterized in that: The flame retardant layer (5) is made of high-performance flame retardant epoxy resin mixed with aluminum hydroxide inorganic flame retardant, and a micro-nano flame retardant coating is added on the surface.

7. The flame retardant and shock absorbing epoxy board according to claim 1, characterized in that: The edge of the plate body is composed of a central heat-conducting layer (1), a shock-absorbing and energy-absorbing layer (2), an electromagnetic shielding layer (3), a structural reinforcement layer (4) and a flame-retardant layer (5), wherein the shock-absorbing and energy-absorbing layer (2), the electromagnetic shielding layer (3), the structural reinforcement layer (4) and the flame-retardant layer (5) are respectively symmetrically arranged with right-angle bends about the central heat-conducting layer (1), and form symmetrical protrusions on the edge of the plate body, and the fixing strip 6 is slidably engaged with the protrusions on the edge of the plate body.

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