Car refrigerator
By adopting a multi-layered protective structure and modular design in the vehicle refrigerator, the problems of mechanical damage and insulation material aging in traditional vehicle refrigerators under vibration and extreme environments are solved, thereby improving safety and energy efficiency and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU GUANGSHEN ELECTRIC PROD CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional vehicle refrigerators lack multi-layer protection in their structural design, making them susceptible to damage from vibration and extreme environments. Insulation materials are prone to aging in high-temperature or humid environments, leading to an increased risk of leakage or short circuits. Insufficient heat management of the battery modules affects the lifespan and energy efficiency of the equipment.
It adopts a multi-layer protective structure, including an ABS inner liner, an epoxy resin insulation layer, and a SUS stainless steel protective plate, combined with thermally conductive pads and foam layers, to form mechanical, insulating, and corrosion-resistant protection, and is designed to be modular for easy maintenance.
It improves the safety and durability of vehicle refrigerators, reduces maintenance costs, enhances insulation performance and thermal management, and reduces fatigue damage to battery modules caused by mechanical vibration.
Smart Images
Figure CN224434788U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle refrigeration equipment technology, and in particular to vehicle-mounted refrigerators. Background Technology
[0002] As a refrigeration and preservation device for use in vehicles, the core function of a car refrigerator is to maintain a suitable low-temperature environment inside the refrigerator through a refrigeration system to meet the storage needs of food, medicine, and other items. However, existing car refrigerators generally suffer from the following technical problems:
[0003] Traditional vehicle refrigerators often rely on a single material (such as a plastic or metal casing) in their structural design, lacking multi-layered protection for core refrigeration components (such as compressors and battery modules). This makes them susceptible to mechanical damage from vibrations, collisions, or extreme environments during vehicle operation, affecting equipment lifespan and safety. The insulation materials in existing vehicle refrigerators (such as ordinary plastics or foam) are prone to aging in high-temperature or humid environments, increasing the risk of leakage or short circuits. Simultaneously, inadequate thermal management of the battery modules can easily lead to localized overheating, reducing energy efficiency and shortening service life.
[0004] Most existing vehicle refrigerators have an integrated design with no clear separation between components, which means that the entire unit needs to be disassembled when repairing or replacing parts, increasing maintenance costs and time. Utility Model Content
[0005] The main objective of this invention is to provide a vehicle-mounted refrigerator that addresses the shortcomings of traditional vehicle-mounted refrigerators, which often rely on single materials and lack multi-layered protection for core refrigeration components. This results in susceptibility to mechanical damage from vibrations, collisions, or extreme environments during vehicle operation. Furthermore, the insulation materials in existing vehicle-mounted refrigerators are prone to aging in high-temperature or humid environments, increasing the risk of leakage or short circuits. Simultaneously, inadequate heat management of the battery module can lead to localized overheating, reducing energy efficiency and shortening service life.
[0006] To achieve the aforementioned objectives of this utility model, the first aspect of this utility model provides a vehicle-mounted refrigerator, comprising:
[0007] The inner support container has an inner liner structure made of ABS material.
[0008] An insulating protective layer comprises epoxy resin boards arranged symmetrically on the upper and lower sides, which enclose a battery cell module disposed between the two epoxy resin boards.
[0009] A mechanical protective layer, wherein the mechanical protective layer is wrapped around the outside of the insulating protective layer;
[0010] The housing, the mechanical protective layer, the insulating protective layer and the battery cell module wrapped by them, and the inner support container are arranged sequentially from bottom to top in the housing.
[0011] Furthermore, the outer wall of the inner support container is provided with an evaporator tube assembly, and the evaporator tube assembly is located inside the box body. The evaporator tube assembly includes an evaporator tube surrounding the outer wall of the inner support container.
[0012] Furthermore, the housing is equipped with a compressor and a condenser pipe. The compressor, the condenser pipe, and the evaporator pipe assembly are connected to form a refrigerant circulation loop. The battery module is electrically connected to the compressor and is used to supply power to the compressor.
[0013] Furthermore, the housing includes an upper shell and a lower shell, and the end faces of the upper shell and the lower shell are mated to form a cavity for placing the mechanical protective layer, the insulating protective layer and the battery cell module and the inner support container enclosed therein.
[0014] Furthermore, the enclosure is made of high-density polyethylene material.
[0015] Furthermore, the mechanical protective layer is a protective plate made of SUS stainless steel, the thickness of which is 0.5-1.2 mm, and the surface is passivated to form a chromium oxide protective film.
[0016] Furthermore, the battery cell module includes at least two individual battery cells, with adjacent individual battery cells connected in series, and a plurality of individual battery cells arranged horizontally by means of a mounting bracket.
[0017] Furthermore, it also includes a foam layer disposed between the outer side of the inner support container and the box body, and the foam layer is located above the insulating protective layer.
[0018] Furthermore, the vehicle refrigerator also includes a power connector, which is connected to the battery module. The power connector is used to electrically connect to the vehicle's cigarette lighter interface, the vehicle battery direct connection port, or the inverter interface.
[0019] Furthermore, a thermally conductive pad is embedded between the epoxy resin plate located below the battery cell module and the mechanical protective layer. The thermally conductive pad is used to dissipate the heat generated by the battery cell module through the mechanical protective layer.
[0020] The present invention has the following advantages over the prior art:
[0021] 1. This utility model enhances safety and durability through multi-layered protection. From the inside out, it consists of an ABS inner liner, an epoxy resin insulation layer, a SUS201 stainless steel protective plate, and a housing, forming multiple layers of protection for mechanical, insulation, and corrosion resistance. The ABS inner liner provides lightweight support, the epoxy resin plate ensures stable insulation performance under high-temperature environments, the stainless steel plate undergoes passivation treatment to enhance impact resistance and corrosion resistance, and the housing effectively resists external environmental erosion.
[0022] 2. This utility model features a multi-layered structure for insulation, protection, and heat dissipation, with clearly defined functions. It facilitates the individual replacement or upgrading of components, such as replacing old epoxy resin boards or worn mechanical protective layers, thus reducing maintenance costs. A 0.5-1.0mm gap is provided between the mechanical protective layer and the insulation layer to absorb mechanical vibrations during vehicle operation and reduce fatigue damage to the battery cell module. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the exploded structure of a vehicle-mounted refrigerator according to an embodiment of this utility model;
[0024] Figure 2 This is a schematic diagram of the structure between the insulating protective layer, the battery module, and the mechanical protective layer of a vehicle refrigerator according to an embodiment of this utility model;
[0025] Figure 3 This is a schematic cross-sectional view of the body of a vehicle-mounted refrigerator according to an embodiment of the present invention.
[0026] in:
[0027] 1-Inner support container; 2-Insulation protective layer; 3-Battery cell module; 4-Mechanical protective layer; 5-Box body; 6-Evaporator tube assembly; 7-Foamed board.
[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0033] Reference Figures 1-3 An embodiment of this utility model provides a vehicle-mounted refrigerator, comprising:
[0034] Inner support container 1, an inner liner structure made of ABS material;
[0035] The insulating protective layer 2 includes epoxy resin plates arranged symmetrically on the upper and lower sides, and wraps the battery cell module 3 disposed between the two epoxy resin plates;
[0036] Mechanical protective layer 4, which is disposed on the outside of the insulating protective layer 2;
[0037] The mechanical protective layer 4, the insulating protective layer 2 and the battery cell module 3 wrapped by it, and the inner support container 1 are arranged in the box body 5 from bottom to top.
[0038] In this embodiment, the inner support container 1 is an inner liner structure made of ABS material, serving as an internal support skeleton and providing mechanical protection and basic insulation. ABS material is lightweight, impact-resistant, and corrosion-resistant, making it suitable as an inner layer structure that directly contacts the battery cell module. The insulating protective layer 2 comprises symmetrically arranged epoxy resin plates that wrap around the battery cell module 3. The mechanical protective layer 4 is a protective plate made of SUS201 stainless steel with a thickness of 0.5-1.2 mm. The surface is passivated to form a chromium oxide protective film, enhancing corrosion resistance and mechanical strength.
[0039] Optionally, the housing 5 houses a compressor and a condenser. The compressor, the condenser, and the evaporator assembly 6 are connected to form a refrigerant circulation loop. The battery module 3 is electrically connected to the compressor to supply power. The condenser is connected to the evaporator assembly 6 via a pipe joint, and absorbs heat from the inner support container 1 through a circulating refrigerant, such as an aqueous ethylene glycol solution. The compressor can achieve efficient thermal management through heat dissipation fins or a fan on the outside of the housing 5.
[0040] Among them, cell module 3 uses the P73D type cell module.
[0041] Optionally, an evaporator tube assembly 6 is provided on the outer wall of the inner support container 1, and the evaporator tube assembly 6 is located inside the housing 5. The evaporator tube assembly 6 includes evaporator tubes surrounding the outer wall of the inner support container 1. The evaporator tubes are made of copper or aluminum alloy, which has high thermal conductivity. Through direct contact with the inner support container 1, heat is quickly transferred from the inner support container 1 to the outside of the housing 5, thereby cooling the object contained in the internal cavity of the inner support container 1.
[0042] The housing 5 comprises an upper shell and a lower shell, with the end faces of the upper and lower shells mating to form a cavity for housing the mechanical protective layer 4, the insulating protective layer 2 and the enclosed battery cell module 3, and the inner support container 1. The housing 5 is composed of an upper shell and a lower shell, which are mated at their end faces to form the cavity. The inner support container 1, the insulating protective layer 2 and the enclosed battery cell module 3, and the mechanical protective layer 4 are nested sequentially from bottom to top within the housing 5. The housing 5 is made of high-density polyethylene material.
[0043] The housing 5 is made of high-density polyethylene material, which serves as the outermost shell and is lightweight, corrosion-resistant, and impact-resistant, protecting the internal components from external environmental erosion.
[0044] Optionally, the SUS201 stainless steel plate of the mechanical protective layer 4 has a thickness of 0.5-1.2 mm, and its surface is passivated to form a chromium oxide protective film. Alternatively, the SUS201 stainless steel plate of the mechanical protective layer 4 may be chemically passivated to form a chromium oxide protective film with a thickness of 0.1-0.3 μm, significantly improving corrosion resistance and making it suitable for humid or salt spray environments.
[0045] The high insulation properties of the epoxy resin board combined with the high strength of the SUS201 stainless steel board not only isolate the potential risk of the battery cell module 3, but also provide shock protection.
[0046] Optionally, a foam layer 7 is also included, which is disposed between the outer side of the inner support container 1 and the box body 5, and the foam layer 7 is located above the insulating protective layer 2. Adding a layer of foam board 7 can provide insulation; the foam board 7 is preferably made of MPP foam material.
[0047] Optionally, the battery cell module 3 includes at least two single battery cells, with adjacent single battery cells connected in series, and a plurality of single battery cells arranged horizontally by a mounting bracket.
[0048] Optionally, the vehicle refrigerator also includes a power connector, which is connected to the battery module 3. The power connector is used to electrically connect to the vehicle cigarette lighter interface, the vehicle battery direct connection port, or the inverter interface.
[0049] It should be noted that a standardized power connector is located on the outside of enclosure 5, supporting 12V / 24V DC power input and compatible with vehicle cigarette lighter sockets. The power connector features a waterproof design to ensure stable power supply under harsh operating conditions.
[0050] Optionally, a thermally conductive pad is embedded between the epoxy resin plate located below the battery cell module 3 and the mechanical protective layer 4 to form a heat conduction channel. The thermally conductive pad is used to dissipate the heat generated by the battery cell module 3 through the mechanical protective layer 4. The thermally conductive pad can be any one of a thermally conductive silicone pad, a metal-based thermally conductive pad, or a graphite thermally conductive pad.
[0051] The manufacturing of the inner support container 1 involves using injection molding to process the ABS inner liner, ensuring a wall thickness of 1.5-2.0 mm and a smooth, burr-free inner surface. The evaporator tube assembly 6 is fixed to the outer wall of the inner support container 1 via welding or a snap-fit structure to maximize the thermal contact area.
[0052] Assembly of insulating protective layer 2: The epoxy resin board is manufactured by molding process, with a thickness of 3-5mm, and the upper and lower layers symmetrically wrap the battery cell module 3.
[0053] Installation of mechanical protective layer 4: SUS201 stainless steel plate is processed into protective plate by stamping and forming process. The edges are chamfered to avoid scratching other components. The baffle of the edge of mechanical protective layer 4 is wrapped around the outside of the insulating protective layer 2 to realize the integrated fixation of mechanical protective layer 4, insulating protective layer 2 and battery cell module 3, which is convenient for overall removal.
[0054] The upper and lower shells of the housing 5 are fixedly connected by snaps or screws commonly used in the prior art, and the sealing performance between the upper and lower shells is enhanced by a sealing strip.
[0055] Description: The working principle is based on a dual mechanism of layered protection and coordinated heat dissipation: The inner support container 1 is made of ABS material, serving as the inner liner structure that directly contacts the battery cell module. It provides lightweight and impact-resistant mechanical support and isolates potential risks through its basic insulation performance. The insulating protective layer 2 consists of symmetrically arranged epoxy resin plates wrapping the battery cell module. Simultaneously, by embedding thermally conductive pads, it eliminates thermal resistance and enhances heat conduction efficiency. The mechanical protective layer 4 is composed of 0.5-1.2mm thick SUS201 stainless steel plates. The surface is passivated to form a chromium oxide protective film, providing impact resistance and structural strength. A buffer gap is reserved between it and the insulating protective layer 2 to absorb mechanical vibration. The enclosure 5 is made of high-density polyethylene material, which is lightweight and corrosion-resistant. The upper and lower shells are joined end-to-end to form a closed cavity, embedding all functional layers. A sealing strip is installed at the contact interface between the enclosure 5 and the mechanical protective layer 4 to ensure airtightness and adaptability to long-term vibration environments. The compressor, in conjunction with heat sink fins or a fan, further reduces the temperature of the battery cell module to a safe range. In addition, a power connector is located on the outside of the enclosure 5, supporting rapid power supply and system adaptation. The modular, layered design facilitates maintenance and component replacement. This is achieved through the aforementioned multi-layered protective structure, efficient thermal management, and integrated sealed protection design.
[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. A vehicle refrigerator characterized by comprising: include: The inner support container (1) has an inner liner structure made of ABS material; The insulating protective layer (2) includes epoxy resin plates arranged symmetrically on the upper and lower sides, and wraps the battery cell module (3) disposed between the two epoxy resin plates; Mechanical protective layer (4), which is disposed on the outside of the insulating protective layer (2); The mechanical protective layer (4), the insulating protective layer (2) and the battery cell module (3) wrapped by it, and the inner support container (1) are arranged in the box (5) from bottom to top.
2. The vehicle-mounted refrigerator according to claim 1, characterized in that, The outer wall of the inner support container (1) is provided with an evaporator tube assembly (6), and the evaporator tube assembly (6) is located inside the box body (5). The evaporator tube assembly (6) includes an evaporator tube surrounding the outer wall of the inner support container (1).
3. The vehicle-mounted refrigerator according to claim 2, characterized in that, The housing (5) is equipped with a compressor and a condenser. The compressor, the condenser and the evaporator assembly (6) are connected to form a refrigerant circulation loop. The battery module (3) is electrically connected to the compressor and is used to supply power to the compressor.
4. The vehicle-mounted refrigerator according to claim 1, characterized in that, The housing (5) includes an upper shell and a lower shell, and the end faces of the upper shell and the lower shell are fitted together to form a cavity for placing the mechanical protective layer (4), the insulating protective layer (2) and the battery cell module (3) wrapped therein, and the inner support container (1).
5. The vehicle-mounted refrigerator according to claim 4, characterized in that, The box (5) is made of high-density polyethylene material.
6. The vehicle-mounted refrigerator according to claim 1, characterized in that, The mechanical protective layer (4) is a protective plate made of SUS201 stainless steel plate with a thickness of 0.5-1.2mm and a chromium oxide protective film formed on the surface by passivation treatment.
7. The vehicle-mounted refrigerator according to claim 1, characterized in that, The battery module (3) includes at least two single cells, with adjacent single cells connected in series, and several single cells arranged horizontally by mounting brackets.
8. The vehicle-mounted refrigerator according to any one of claims 1-7, characterized in that, It also includes a foam layer (7), which is disposed between the outer side of the inner support container (1) and the box body (5), and the foam layer (7) is located above the insulating protective layer (2).
9. The vehicle-mounted refrigerator according to claim 1, characterized in that, The vehicle refrigerator also includes a power connector, which is connected to the battery module (3). The power connector is used to electrically connect the vehicle cigarette lighter interface, the vehicle battery direct connection port, or the inverter interface.
10. The vehicle-mounted refrigerator according to claim 1, characterized in that, A thermally conductive pad is embedded between the epoxy resin plate located below the battery cell module (3) and the mechanical protective layer (4). The thermally conductive pad is used to dissipate the heat generated by the battery cell module (3) through the mechanical protective layer (4).