Energy storage and heat dissipation type throwing recorder

Abstract

This invention provides an energy storage and heat dissipation type disposal recorder, relating to the field of avionics technology. It includes: a bottom shell component and a cover plate component, fixedly connected to form a hollow, sealed shell; a lower cavity of insulating foam is attached to the inner wall of the bottom shell component, and an upper cavity of insulating foam is attached to the inner wall of the cover plate component; the mating surface between the upper and lower cavities of the insulating foam is sealed, forming a closed cavity; a thermal management component includes an energy storage box and multiple heat-conducting plates. Energy storage material is disposed inside the energy storage box, and a heat spreader is disposed on its outer wall. The multiple heat-conducting plates are connected to the energy storage box via the heat spreader. The energy storage box is located at the center of the closed cavity, and the multiple heat-conducting plates are equidistantly arranged around the energy storage box; multiple electronic components are respectively mounted on the multiple heat-conducting plates and are tightly fitted to the heat-conducting plates. This invention enables rapid transfer of external heat energy to the thermal management component over a short distance, achieving temperature control of the circuit modules and ensuring safe system operation.

Description

Technical Field

[0001] This invention relates to the field of avionics technology, and more specifically to an energy storage and heat dissipation type jettison recorder. Background Technology

[0002] In the new generation of protective ejection recorders, it is required that the recorder withstands the burning of floating oil at the accident site (temperature 500-600℃) for 30 minutes after ejection and impact into the sea. It should also provide search and positioning signals when no fire occurs. To meet these requirements, domestic manufacturers typically use composite material shells for impact protection, with lightweight insulation materials inside to prevent rapid heat transfer from the outside while providing buoyancy to ensure the recorder floats on the sea surface after impact. However, the inability to quickly transfer external heat inevitably prevents the rapid dissipation of heat from internal electronic components, causing a sharp rise in temperature within the shell and recorder, especially for the battery and positioning antenna, which have high power consumption and are prone to overheating within the insulation layer, potentially leading to malfunctions in other devices. Transferring heat-consuming components from the shell to a separation mechanism via conductors is a common heat dissipation method. However, this method has drawbacks: during an accident fire, heat can rapidly enter the interior through this channel, causing high-temperature damage; it also has low reusability, significantly reducing the effectiveness of the foam insulation material. Summary of the Invention

[0003] In view of this, this application provides an energy storage and heat dissipation type throw recorder. This throw recorder utilizes an energy storage-based heat dissipation and cooling method, employing a heat pipe to rapidly conduct heat from the electronic component's casing to the energy storage component. The energy storage component contains a heat-absorbing medium with high water content, high specific heat capacity, and low volatility. By utilizing rapid heat conduction and a large specific heat storage capacity, the heat energy from the electronic component's casing is stored. Through phase conversion, water molecules continuously undergo gas-liquid phase transitions, absorbing a large amount of heat energy and lowering the temperature of the electronic component's casing, ensuring the electronic component remains at its normal operating temperature. The large energy storage component can form a significant heat absorption device when the protective throw recorder is subjected to fire. The internal heat-absorbing medium converts the heat into water vapor, carrying away a large amount of heat energy and lowering the actual internal temperature, indirectly reducing design complexity and improving the reliability of the wreck-resistant components.

[0004] This application provides the following technical solution: an energy storage and heat dissipation type throwing recorder, comprising:

[0005] The bottom shell component and the cover plate component are fixedly connected by fasteners to form a hollow, sealed shell.

[0006] The upper cavity and the lower cavity of the insulating foam are attached to the inner wall of the bottom shell component and the upper cavity of the insulating foam are attached to the inner wall of the cover plate component. Under the assembly pressure of the connection between the bottom shell and the cover plate component, the joint surface between the upper cavity and the lower cavity of the insulating foam is sealed to form a hollow, sealed cavity.

[0007] A thermal management component includes an energy storage box and multiple heat-conducting plates. The energy storage box contains energy storage material, and a heat-spreading pipe is installed on the outer wall of the energy storage box. The multiple heat-conducting plates are respectively connected to the energy storage box through the heat-spreading pipe. The energy storage box is located at the center of the sealed cavity, and the multiple heat-conducting plates are respectively arranged at equal intervals around the energy storage box.

[0008] It also includes a first wireless positioning device, a second wireless positioning device, a data management component, a battery assembly, and a tamper-proof component. The first wireless positioning device, the second wireless positioning device, the data management component, the battery assembly, and the tamper-proof component are respectively mounted on multiple heat-conducting plates and are in close contact with the heat-conducting plates.

[0009] According to one embodiment of this application, silicone rubber is provided on the connecting contact surface between the bottom shell component and the cover plate component for water sealing.

[0010] According to one embodiment of this application, a central slot and a plurality of module slots are provided in the lower cavity of the insulating foam. The energy storage box is disposed in the central slot. The heat-conducting plate is located at the bottom of the module slots. The first wireless positioning device, the second wireless positioning device, the data management component, the battery component, and the tamper-proof component are respectively mounted above the heat-conducting plate in the module slots.

[0011] According to one embodiment of this application, the upper cavity and the lower cavity of the insulating foam are made of high-temperature resistant plastic foam board material, and the material density is ≤0.4g / cm³. 3 Thermal conductivity ≤0.03W / mk.

[0012] According to one embodiment of this application, the heat-conducting plate is made of pure copper plate with a thickness of 0.5mm, the energy storage box is made of 6063 aluminum alloy, the bottom of the energy storage box is provided with a heat pipe groove, one end of the heat spreader is welded to the heat-conducting plate, and the other end is pressed into the heat pipe groove at the bottom of the energy storage box.

[0013] According to one embodiment of this application, the energy storage material is a high water content heat-absorbing medium. The main components of the high water content heat-absorbing medium include sodium polyacrylate and aluminum polysulfate. The mass content of the high water content heat-absorbing medium is ≤3%, and the specific heat capacity is ≥3.8 kJ / kg·℃. The volume occupied by the high water content heat-absorbing medium does not exceed 3 / 4 of the volume of the energy storage box.

[0014] According to one embodiment of this application, an energy storage cover is provided at the opening of the energy storage box. The energy storage cover is made of high-temperature resistant plastic with a service temperature >120°C and a water absorption rate ≤0.1%. The energy storage cover is fixedly sealed to the opening of the energy storage box by a sealing rubber ring and high-temperature resistant adhesive.

[0015] According to one embodiment of this application, the bottom thickness of the energy storage box is at least twice the sidewall thickness, and the depth of the heat pipe groove at the bottom of the energy storage box is greater than 1 / 2 of the thickness of the heat spreader.

[0016] According to one embodiment of this application, the heat-conducting plates below the first wireless positioning device, the second wireless positioning device, the data management component, the battery component, and the anti-damage component are filled with thermally conductive silicone grease with a thickness of less than 0.05 mm, and the thermal conductivity of the thermally conductive silicone grease is ≥5W / mk.

[0017] According to one embodiment of this application, a backup circuit for the survivability component is also included, the backup circuit being disposed within the energy storage box.

[0018] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: In the embodiments of the present invention, the metal shell of the thermal management component is connected by a thermally conductive copper plate, thermally conductive silicone grease and a heat pipe, so that the heat of the electronic component shell can be quickly transferred to the thermal management component without causing thermal pushing; the heat-absorbing medium with high specific heat capacity inside the thermal management component can quickly absorb a large amount of heat, but will not cause the temperature of the thermal management component to rise too quickly, which will inevitably form a temperature gradient, ensuring the heat conduction outside the electronic component shell, ensuring that the temperature outside the electronic component shell does not rise rapidly, affecting the safe operation of the equipment, and improving the reliability of the anti-damage component.

[0019] The device of this invention enables rapid transfer of external heat energy to the thermal management component within a short distance, achieving temperature control of the circuit module and ensuring safe system operation. Simultaneously, the thermal management component, acting as a heat absorber, can quickly absorb and convert the heat energy suffered by the circuit module and crash-damaged components into gas for discharge during an accident, reducing the internal temperature rise rate and thus lowering the thermal protection requirements of the crash protection components or increasing their safety margin. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the energy storage and heat dissipation type throwing recorder provided in the embodiments of this application;

[0022] Figure 2 This is a schematic diagram of the thermal management components provided in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the energy storage box structure provided in an embodiment of this application;

[0024] Figure 4 yes Figure 3 Schematic diagram of surface AA in the diagram;

[0025] Among them, 1-cover plate component, 2-upper cavity of insulating foam, 3-lower cavity of insulating foam, 4-bottom shell component, 5-first wireless positioning device, 6-second wireless positioning device, 7-data management component, 8-battery assembly, 9-damage-resistant component, 10-thermal management component, 101-energy storage box, 102-cover plate, 103-heat-conducting plate, 104-high water content heat-absorbing medium, 105-sealing rubber ring. Detailed Implementation

[0026] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] This invention provides a heat dissipation solution for the circuit module of a protective throwable recorder. It replaces the traditional method of heat conduction to the external ejection device with a method that conducts heat from the circuit module to an internal thermal management component for thermal balance management. Utilizing the thermal management component's specific heat capacity, the temperature rise rate of the circuit module is reduced, and when not in operation, heat is slowly conducted to the outside for cooling. This invention, employing energy storage cooling technology, effectively solves the problem of rapid heat dissipation in protective throwable recorder circuit modules encased in insulating media. It ensures the safe operation of the internal circuit module without damaging the insulation structure. Simultaneously, the thermal energy storage capacity of the thermal management component reduces the internal temperature rise rate during fire, prolongs the thermal balance time, reduces the design difficulty of wreck-resistant components, and improves the reusability of circuit components.

[0029] according to Figures 1-3 As shown, an embodiment of the present invention provides an energy storage and heat dissipation type throwing recorder, comprising:

[0030] The bottom shell component 4 and the cover plate component 1 are fixedly connected by fasteners to form a hollow, sealed shell.

[0031] The upper cavity 2 and the lower cavity 3 of the insulating foam are attached to the inner wall of the bottom shell component 4, and the upper cavity 2 of the insulating foam is attached to the inner wall of the cover plate component 1. Under the assembly pressure of the connection between the bottom shell 4 and the cover plate component 1, the joint surface between the upper cavity 2 and the lower cavity 3 of the insulating foam is sealed to form a hollow, sealed cavity.

[0032] A thermal management component 10 includes an energy storage box 101 and a plurality of heat-conducting plates 103. The energy storage box 101 contains energy storage material, and a heat-spreading pipe is provided on the outer wall of the energy storage box 101. The plurality of heat-conducting plates 103 are respectively connected to the energy storage box 101 through the heat-spreading pipe. The energy storage box 101 is located at the center of the sealed cavity, and the plurality of heat-conducting plates 103 are respectively equidistantly arranged around the energy storage box 101.

[0033] It also includes a first wireless positioning device 5, a second wireless positioning device 6, a data management component 7, a battery component 8, and a tamper-proof component 9. The first wireless positioning device 5, the second wireless positioning device 6, the data management component 7, the battery component 8, and the tamper-proof component 9 are respectively mounted on the multiple heat-conducting plates 103 and are in close contact with the heat-conducting plates 103.

[0034] In practical implementation, the cover plate component 1 and the bottom shell component 4 are fastened together with screws, and watertightness is achieved through silicone rubber sealant at their joint surfaces, forming a sealed cavity. Within the sealed cavities of the lower insulating foam cavity 3 and the upper insulating foam cavity 2, the pressure applied during assembly compresses and deforms the foam, creating a relatively sealed space. To ensure good thermal insulation and buoyancy performance, the lower insulating foam cavity 3 and the upper insulating foam cavity 2 are made of high-temperature resistant plastic foam board material, and the density of the insulating foam occupying the large internal space does not exceed ≤0.4 g / cm³. 3 With a thermal conductivity of ≤0.03W / mk, the material itself can withstand temperatures above 180℃ without causing the foam micropores to collapse.

[0035] according to Figure 1 and Figure 2 As shown, the heat-conducting plate 103 of the thermal management component 10 is located at the bottom of each groove of the circuit module in the lower cavity of the insulating foam 3. The circuit module includes a first wireless positioning device 5, a second wireless positioning device 6, a data management component 7, and a battery assembly 8, which are respectively placed on the corresponding heat-conducting plate 103. The upper cavity of the insulating foam 2 is provided with grooves corresponding to the heads of each circuit module and is placed under the cover plate component 1.

[0036] In specific implementation, the surface of the heat-conducting plate 103 in contact with the circuit components is coated with thermal grease with a thickness of ≤0.05mm to eliminate assembly gaps. The thickness is controlled to reduce thermal resistance and enable rapid heat transfer. The selected thermal grease has a thermal conductivity of ≥5W / mk. The required thermal conductivity of the thermal grease can be calculated based on the power consumption of different circuit modules and the thermal resistance of the thermal grease. In this embodiment, the first wireless positioning device 5, the second wireless positioning device 6, and the power supply component 8 have high power consumption. Through calculation, a thermal grease with a high thermal conductivity of 5W / mk was selected to ensure that the heat from the circuit component casing can be quickly conducted to the thermal management component.

[0037] In practical implementation, the heat-conducting plate 103 is composed of a 0.5mm thick pure copper plate (surface passivated) and a heat-conducting pipe welded together. The copper plate should occupy more than 90% of the surface area of ​​the heating element it contacts. The heat-conducting pipe is made of commercially available pure copper with sintered capillary pores. It utilizes the heat obtained by the internal medium at the copper plate to quickly evaporate and then rapidly condense and change phase at the contact end with the energy storage box, quickly transferring heat to the energy storage box 101. The other end of the heat-conducting plate 103 is fixed to the corresponding heat pipe groove at the bottom of the energy storage box 101 by pressing. During pressing, a layer of thermally conductive silicone grease with a thickness of no more than 0.05mm is applied to the groove of the heat pipe groove to increase the contact area between the heat-conducting pipe and the groove, thereby improving the heat conduction efficiency.

[0038] The energy storage box contains a high-water-content heat-absorbing medium 104 with a specific heat capacity ≥3.8 kJ / kg·℃, utilizing the high specific heat of water molecules to achieve energy storage and cooling effects. The main components of the high-water-content heat-absorbing medium 104 are sodium polyacrylate, aluminum polysulfate (PAS), and purified water. Sodium polyacrylate and aluminum polysulfate (PAS) can absorb hundreds or even thousands of times their own mass of water molecules. Through their molecular structure, they firmly bind the water molecules, preventing rapid evaporation and escape, while maintaining good water-locking effects even at high temperatures (120℃~150℃). The mass content of the two selected materials accounts for ≤3% of the heat-absorbing medium's mass content, and the ratio of the two materials is determined according to usage requirements and cost. Due to its high water content, the heat-absorbing medium will transform into solid ice at low temperatures, causing volume expansion. Therefore, the heat-absorbing medium placed in the energy storage box 101 needs to allow for some space for low-temperature expansion to prevent deformation caused by structural compression after expansion.

[0039] In one embodiment, the backup circuit of the survivability component 9 is housed inside the energy storage box 101 to protect backup data against crashes, improve thermal survivability, and increase data survival rate. Additionally, if too much heat-absorbing medium is required inside the energy storage box 101, expansion may damage the backup circuit. Therefore, the volume of the high-water-content heat-absorbing medium 104 should not exceed 3 / 4 of the energy storage box's volume. In specific implementations, the required amount of high-water-content heat-absorbing medium 104 should be assessed based on parameters such as the maximum power consumption of the circuit module, the total heat dissipated during operation, and the maintained shell temperature. The total heat dissipated needs to be at least twice the energy storage specific heat capacity to ensure safety.

[0040] In practical implementation, an energy storage cover plate is provided at the opening of the energy storage box 101. The cover plate 102 is made of high-temperature resistant plastic through blow molding. The selected high-temperature resistant plastic is made of plastic with a service temperature exceeding 120℃ and a water absorption rate of ≤0.1%. Excessive water absorption rate will cause the water molecules inside to evaporate to the surface of the plastic after a long period of evaporation and transformation, resulting in a reduction of the heat-absorbing medium and affecting the energy storage performance. When the protective throwing recorder is subjected to high-temperature fire, the internal temperature rises sharply, and the high water content heat-absorbing medium in the energy storage box is converted into a gaseous state. The continuous conversion will inevitably lead to high internal pressure and local high-temperature environment. If the wrecked backup data is placed inside, it will be detrimental to the circuit board. Using a metal sealed box requires the design of a pressure release structure to meet the airtightness in daily use and to release pressure at high temperatures, which is relatively complex. The embodiment of this invention uses a plastic cover plate, which can utilize the softening and deformation characteristics of plastic at high temperatures. Under the impact of a small internal pressure, it will deform and create a gap, releasing the internal pressure, cooling down quickly, and protecting the internal circuit. To ensure the sealing performance of the energy storage box 101 during daily use, a groove can be added to the edge of the cover plate 102 to install a sealing rubber ring 105, improving the assembly and sealing performance. The energy storage box 101 and the cover plate 102 are fixed with a high-temperature resistant, fast-drying adhesive, which improves process efficiency. At the same time, the high-temperature resistant, fast-drying adhesive can ensure the sealing of the box during daily use and can prevent gradual failure under high-temperature fire, reducing obstacles to the escape of internal gases.

[0041] like Figures 3-4 As shown, the energy storage box 101 is milled from 6063 aluminum alloy, which has excellent thermal conductivity and high strength. Its high thermal conductivity, specific heat capacity, and cost-effectiveness completely replace copper alloys. The wall thickness T of the heat-conducting copper tube pressed into the bottom of the energy storage box 101 is greater than twice the sidewall thickness t. This structure allows the energy storage box to have a certain energy storage effect, and the box itself can store heat, preventing excessively rapid temperature rise and providing a buffer time for heat transfer to the heat-absorbing medium. The depth H of the bottom pressing groove (the heat pipe pressing groove) is not less than 1 / 2 the thickness of the heat-conducting copper tube (the heat-spreading pipe), ensuring that the pressed heat-conducting copper tube is in complete contact with the groove. The surface finish of the groove bottom is no greater than 1.6μm, reducing contact thermal resistance.

[0042] In summary, the energy storage and heat dissipation type disposal recorder provided in this application embodiment can achieve at least the following technical effects compared with the prior art:

[0043] 1. This application reduces the temperature of the protective throwing recorder module housing by using internal rapid thermal energy storage. Compared with the method of conducting heat from the housing to the protective throwing recorder ejection device for heat dissipation, it does not change the internal insulation system, ensuring that the protective throwing recorder has no additional heat conduction channels when exposed to high temperature fire, and will not cause the internal temperature to rise too quickly.

[0044] 2. This application utilizes a heat-conducting plate and copper pipes to rapidly transfer heat to the thermal management components. Compared to conducting heat to the external cooling system of the protective throw-and-record device, this method offers higher thermal efficiency and faster, better cooling. Simultaneously, localized heat conduction prevents the circuitry's outer casing from heating up too quickly during high-temperature fires. The casing temperature only rises rapidly when the heat-absorbing medium in the thermal management components is depleted. The presence of the thermal management components enhances the safety of daily heat dissipation for the circuitry and improves the overall survivability of the circuitry during high-temperature testing. If the total amount of heat-absorbing medium is appropriate, the circuitry can be reused, providing more resources for search and rescue and data interpretation. Furthermore, it reduces the high-temperature resistance requirements of the circuitry and wrecked components, simplifying the design process.

[0045] 3. The energy storage box designed in this application adopts a metal box structure and a plastic cover with adhesive sealing, which reduces the structural design difficulty of releasing pressure at high temperatures and maintaining airtightness at room temperature, and improves sealing efficiency and cost.

[0046] 4. The high water content heat-absorbing medium designed in this application uses highly water-absorbing sodium polyacrylate and aluminum polysulfate (PAS). Through the expansion structure of its own molecular chain, it adsorbs and locks water molecules and remains effective for water molecules at high temperatures. The process of absorbing and releasing water molecules is reversible. Compared with the use of water or a mixture of water and alcohol for energy storage, it can effectively solve the volatilization problem. Moreover, the upper limit of the volatilization temperature is high pressure water or coolant, which can meet the requirements of long-term energy storage without maintenance.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An energy storage and heat dissipation type throwing recorder, characterized in that, include: The bottom shell component and the cover plate component are fixedly connected by fasteners to form a hollow, sealed shell. The upper cavity and the lower cavity of the insulating foam are attached to the inner wall of the bottom shell component and the upper cavity of the insulating foam are attached to the inner wall of the cover plate component. Under the assembly pressure of the bottom shell component and the cover plate component, the joint surface between the upper cavity and the lower cavity of the insulating foam is sealed to form a hollow, sealed cavity. A thermal management component includes an energy storage box and multiple heat-conducting plates. The energy storage box contains energy storage material, and a heat-spreading pipe is installed on the outer wall of the energy storage box. The multiple heat-conducting plates are respectively connected to the energy storage box through the heat-spreading pipe. The energy storage box is located at the center of the sealed cavity, and the multiple heat-conducting plates are respectively arranged at equal intervals around the energy storage box. It also includes a first wireless positioning device, a second wireless positioning device, a data management component, a battery assembly, and a tamper-proof component. The first wireless positioning device, the second wireless positioning device, the data management component, the battery assembly, and the tamper-proof component are respectively mounted on multiple heat-conducting plates and are in close contact with the heat-conducting plates. The connection surface between the bottom shell component and the cover plate component is provided with silicone rubber for water sealing; The lower cavity of the insulating foam is provided with a central slot and a plurality of module slots surrounding the central slot. The energy storage box is disposed in the central slot. The heat-conducting plate is located at the bottom of the module slots. The first wireless positioning device, the second wireless positioning device, the data management component, the battery component, and the anti-damage component are respectively mounted on the heat-conducting plate in the module slots. The energy storage material is a high water content heat-absorbing medium. The main components of the high water content heat-absorbing medium include sodium polyacrylate and aluminum polysulfate. The mass content of the high water content heat-absorbing medium is ≤3%, and the specific heat capacity is ≥3.8 kJ / kg·℃. The volume occupied by the high water content heat-absorbing medium does not exceed 3 / 4 of the volume of the energy storage box. An energy storage cover is provided at the opening of the energy storage box. The energy storage cover is made of high-temperature resistant plastic with a service temperature >120℃ and a water absorption rate ≤0.1%. The energy storage cover is fixed and sealed to the opening of the energy storage box by a sealing rubber ring and high-temperature resistant adhesive.

2. The energy storage and heat dissipation type throwing recorder according to claim 1, characterized in that, The upper and lower cavities of the insulating foam are made of high-temperature resistant plastic foam board material with a density ≤0.4g / cm³. 3 Thermal conductivity ≤0.03W / mk.

3. The energy storage and heat dissipation type throwing recorder according to claim 1, characterized in that, The heat-conducting plate is made of 0.5mm thick pure copper plate, and the energy storage box is made of 6063 aluminum alloy. A heat pipe groove is provided at the bottom of the energy storage box. One end of the heat-spreading pipe is welded to the heat-conducting plate, and the other end is pressed into the heat pipe groove at the bottom of the energy storage box.

4. The energy storage and heat dissipation type throwing recorder according to claim 3, characterized in that, The bottom thickness of the energy storage box is at least twice the sidewall thickness, and the depth of the heat pipe groove at the bottom of the energy storage box is greater than 1 / 2 the thickness of the heat spreader.

5. The energy storage and heat dissipation type throwing recorder according to claim 1, characterized in that, The heat-conducting plates below the first wireless positioning device, the second wireless positioning device, the data management component, the battery assembly, and the wreckage-resistant component are filled with thermally conductive silicone grease with a thickness of less than 0.05 mm, and the thermal conductivity of the thermally conductive silicone grease is ≥5 W / mk.

6. The energy storage and heat dissipation type throwing recorder according to claim 1, characterized in that, It also includes a backup circuit for the survivability component, which is located inside the energy storage box.

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