Unit delivery boxes and logistics delivery vehicles equipped with them

Abstract

This invention provides a unit delivery box and a logistics delivery vehicle having the same. The unit delivery box includes a storage compartment, an energy storage compartment, an energy storage device located in the energy storage compartment, an energy supply component, and a controller. The energy supply component includes an energy supply duct communicating with the storage compartment and an energy supply fan that drives air to circulate between the energy supply duct and the storage compartment. Part of the energy supply duct is arranged adjacent to the energy storage compartment, and a heat-conducting plate is formed between the energy supply duct adjacent to the energy storage compartment and the energy storage compartment. The energy supply fan is communicatively connected to the controller.

Description

Technical Field

[0001] This invention relates to the field of logistics and distribution technology, and in particular to a unit delivery box and a logistics and distribution vehicle having the same. Background Technology

[0002] The transportation of fresh agricultural products accounts for an increasingly large proportion of logistics and distribution. Because they need to be refrigerated or frozen during transportation, they are generally referred to as cold chain logistics. It usually refers to a systematic project that ensures that refrigerated and frozen foods are kept in a specified low-temperature environment at all stages from production, storage, transportation, sales to consumption, in order to ensure food quality and reduce food loss.

[0003] Current cold chain transportation methods mainly include: refrigerated trucks with active refrigeration units or passive insulated boxes. Passive insulated boxes may or may not have ice storage plates. The disadvantages of refrigerated trucks with active refrigeration units are that they require vehicle power, the system is complex, the cost is high, and their market share is low. During transportation, the temperature of the truck is greatly affected by factors such as climate conditions, the reliability of the generator set or the stability of the vehicle's own engine power supply, and the stability of the refrigeration unit. Furthermore, due to their large volume and poor maneuverability, they are not suitable for less-than-truckload (LTL) delivery. Passive insulated boxes without ice storage plates also suffer from significant temperature fluctuations due to environmental factors and uncontrollable temperature. Insulated boxes with ice storage plates have the ice storage plates placed inside the storage compartment, resulting in imprecise temperature control. They also require dedicated refrigeration equipment to freeze the ice plates, and before use, the ice plates need to undergo a phase change to store cold, requiring a certain degree of subcooling. During use, the ice plates need to be released, making the process relatively cumbersome and demanding.

[0004] In view of this, it is necessary to provide an improved unit delivery box and a logistics delivery vehicle having the same, in order to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a unit delivery box and a logistics delivery vehicle having the same.

[0006] To achieve one of the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] A unit delivery box includes a storage compartment, an energy storage compartment, an energy storage device located in the energy storage compartment, an energy supply component, and a controller. The energy supply component includes an energy supply duct communicating with the storage compartment and an energy supply fan that drives air to circulate between the energy supply duct and the storage compartment. Part of the energy supply duct is arranged adjacent to the energy storage compartment, and a heat-conducting plate is placed between the energy supply duct adjacent to the energy storage compartment and the energy storage compartment. The energy supply fan is communicatively connected to the controller.

[0008] Furthermore, the energy supply duct includes a first duct connected to the storage room, a return air inlet on a return air insulation plate disposed at the bottom of the storage room, a second duct connected to the return air inlet, and a third duct connecting the first duct and the second duct. At least a portion of the first duct, the second duct, and the third duct are disposed adjacent to the energy storage room. The energy supply fan is located in the storage room or in the energy supply duct.

[0009] Furthermore, the energy storage chamber is located below the storage chamber, and the first air duct and the second air duct both extend in the vertical direction and are arranged adjacent to the energy storage chamber.

[0010] Furthermore, the third air duct is located at the bottom of the energy storage chamber, and the third air duct is arranged adjacent to the energy storage chamber.

[0011] Furthermore, the first air duct and at least a portion of the return air inlets are respectively located on opposite sides of the storage room.

[0012] Furthermore, the return air insulation plate includes a top plate, a bottom plate, and a flow cavity located between the top plate and the bottom plate. The return air inlet passes through the top plate and the bottom plate and communicates with the flow cavity. An auxiliary return air inlet communicating with the flow cavity is provided on the side of the top plate near the first air duct.

[0013] Furthermore, the energy storage device includes a housing and energy storage material stored inside the housing.

[0014] Furthermore, the energy storage device also includes a flow channel extending through the outer casing.

[0015] Furthermore, the heat-conducting plate is provided with a groove for holding or positioning the energy storage device and / or a through hole penetrating the heat-conducting plate.

[0016] Furthermore, the unit delivery box also includes a refrigeration unit, which includes a compressor, a condenser, a throttling element, and an evaporator connected to form a refrigeration circuit, with the evaporator located in the energy storage chamber.

[0017] Furthermore, the evaporator is installed inside the energy storage device; or, the energy storage chamber is provided with a supporting partition, the supporting partition is provided with an energy storage fan, the evaporator is located above the supporting partition, and the energy storage device is located below the supporting partition; or, the energy storage chamber is provided with a supporting partition, the supporting partition is provided with an energy storage fan, the energy storage device is located above the supporting partition, and the evaporator is located below the supporting partition.

[0018] Furthermore, the unit delivery box also includes a heating assembly for providing heat to the storage compartment, the heating assembly including a heater and a heating fan located inside the storage compartment.

[0019] Furthermore, the power supply duct includes a first duct that connects to the upper half of the storage room, and the heating component is disposed adjacent to the air outlet of the first duct leading to the storage room.

[0020] Furthermore, the unit delivery box also includes a battery assembly.

[0021] A logistics delivery vehicle, comprising any one of the aforementioned unit delivery boxes.

[0022] The beneficial effects of this invention are as follows: In the unit delivery box of this invention, the storage compartment and the energy storage compartment are independently set up, and the energy storage device indirectly provides cooling or heating to the storage compartment through the energy supply component. On the one hand, loading goods and pre-cooling the goods in the storage compartment can be carried out simultaneously with storing cold in the energy storage device, saving time. Moreover, since the two compartments are independent, the energy storage device will not leak cold when the storage compartment is open. On the other hand, during the energy storage process, the energy storage device has little impact on the temperature inside the storage compartment, and the goods will not be frozen. During the energy supply process, the temperature inside the storage compartment is highly controllable and the temperature fluctuation is small. Attached Figure Description

[0023] Figure 1 This is a perspective view of a unit delivery box according to a preferred embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A sectional view;

[0025] Figure 3 yes Figure 1 A schematic diagram after removing the door and part of the cabinet;

[0026] Figure 4 It is a schematic diagram showing the coordination of the refrigeration unit, energy storage device and energy supply components;

[0027] Figure 5 It is a partial exploded view of the refrigeration unit, energy storage device and energy supply components;

[0028] Figure 6 This is a perspective view of an energy storage device according to another preferred embodiment of the present invention;

[0029] Figure 7 yes Figure 6 A schematic diagram after being cut along the axis perpendicular to the inner tube;

[0030] Figure 8 yes Figure 7 A schematic diagram of the phase transition sequence at various points in an energy storage device;

[0031] Figure 9 yes Figure 7 A cross-sectional view along the AA direction;

[0032] Figure 10 Another embodiment of the energy storage device is in Figure 9 A diagram illustrating the perspective;

[0033] Figure 11 Another preferred embodiment of the energy storage device is in Figure 7 A diagram illustrating the perspective;

[0034] Figure 12 Another preferred embodiment of the energy storage device is in Figure 7 A diagram illustrating the perspective;

[0035] Figure 13 Another preferred embodiment of the energy storage device is in Figure 7 A diagram illustrating the perspective;

[0036] Figure 14 This is a perspective view of an energy storage device according to another embodiment;

[0037] Figure 15 yes Figure 14 Exploded view;

[0038] Figure 16 yes Figure 14 Schematic diagram of the ends of the outer tube, inner tube, and heat-conducting plate.

[0039] The components are: 100-Unit delivery box, 1-Box body, 2-Door, 21-Door lock, 3-Storage compartment, 31-Return air insulation board, 311-Top plate, 312-Bottom plate, 313-Flow cavity, 314-Reinforcing rib, 315-Flow hole, 4-Energy storage chamber, 41-Heat conducting plate, 411-Groove, 412-First through hole, 42-Supporting partition, 43-Energy storage fan, and 5-Energy storage device. 51-Outer shell, 52-Energy storage chamber, 521-Sub-energy storage chamber, 53-Outer tube, 54-End cap, 541-Injection port, 542-Sealing element, 543-Second through hole, 55-Connecting channel, 55'-Auxiliary connecting channel, 56-Inner tube, 57-Heat conducting plate, 571-Heat transfer plate, 572-Heat dissipation plate, 6-Flow channel, 7-Heating component, 71-Heater, 72-Heating fan, 8-Energy supply component, 81-Energy supply air duct, 811-First air duct, 812-Return air inlet, 812'-Auxiliary return air inlet, 813-Second air duct, 814-Third air duct, 82-Energy supply fan, 9-Refrigeration unit, 90-Evaporator, 91-Compressor compartment, 92-Heat dissipation hole, 10-Controller, 102-Battery component. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0041] In the various illustrations of this invention, for ease of illustration, certain dimensions of structures or parts may be exaggerated relative to other structures or parts; therefore, only the basic structure of the subject matter of this invention is used to illustrate the invention.

[0042] For ease of description, the terms "below" and "above" are defined according to the orientation of the energy storage device during actual use.

[0043] Please see Figures 1-16 As shown, the unit delivery box 100 of the preferred embodiment of the present invention includes a box body 1 and a door body 2, and the door body 2 is provided with a door lock 21. Both the box body 1 and the door body 2 are made of thermal insulation material, such as vacuum insulation board or foam insulation board.

[0044] The housing 1 contains a storage chamber 3, an energy storage chamber 4, an energy storage device 5 located in the energy storage chamber 4, an energy supply component 8 that transmits energy from the energy storage device 5 to the storage chamber 3, and a controller 10. The controller 10 is communicatively connected to other components to control their operating status.

[0045] Compared to existing systems where the energy storage device 5 is located within the storage chamber 3, the storage chamber 3 and the energy storage chamber 4 of this invention are independently configured, for example, separated by a return air insulation plate 31. The energy storage device 5 indirectly provides cooling or heating to the storage chamber 3 through the energy supply component 8. On the one hand, loading goods into the storage chamber 3 and pre-cooling the goods can be carried out simultaneously with storing cold energy in the energy storage device 5, saving time. Furthermore, since the two chambers are independent, opening the storage chamber 3 will not cause cold leakage in the energy storage device 5. On the other hand, during the energy storage process, the energy storage device 5 has minimal impact on the temperature inside the storage chamber 3, preventing the goods from freezing. During the energy supply process, the temperature inside the storage chamber 3 is highly controllable with minimal temperature fluctuations.

[0046] In this invention, the energy storage chamber 4 is located below the storage chamber 3. Especially when unloaded, the center of gravity of the unit delivery box 100 is located below, making it less likely to tip over during hoisting.

[0047] The energy storage device 5 includes a housing 51 and an energy storage material sealed and stored in an energy storage chamber 52 within the housing 51. The energy storage material is preferably a phase change material, which can store or release a large amount of energy during a phase change process. The amount of energy storage material added is such that, when the energy storage material is in a liquid state, its volume does not exceed 80% of the volume of the energy storage chamber 52, ensuring that the energy storage device 5 will not deform or break due to increased volume during a phase change.

[0048] The outer shell 51 can be made of plastic, preferably a metal shell, which allows for fast energy storage and release.

[0049] Preferably, the energy storage device 5 further includes a flow channel 6 that penetrates the outer shell 51 to allow air or other refrigerants to circulate, thereby enhancing the heat exchange rate and heat exchange effect.

[0050] In one embodiment, the outer shell 51 is made of plastic, and the flow channel 6 is formed during molding.

[0051] In another type of embodiment, please refer to Figures 6-16 As shown, the outer shell 51 is made of metal, and the energy storage device 5 further includes an inner tube 56 that passes through the outer shell 51 and has a flow channel 6, an energy storage cavity 52 formed by the outer shell 51 and the inner tube 56, a heat-conducting plate 57 located in the energy storage cavity 52, and an energy storage material located in the energy storage cavity 52; the heat-conducting plate 57 is in contact with at least one of the outer shell 51 or the inner tube 56 to improve the heat exchange rate.

[0052] The shape of the outer casing 51 is not limited and can be adapted to meet needs or installation space requirements. For example... Figure 6 As shown, the outer casing 51 includes an outer tube 53 and end caps 54 that close both ends of the outer tube 53. The end caps 54 can be any structure that closes both ends of the outer tube 53, and the end caps 54 and the outer tube 53 can be separately or integrally disposed.

[0053] The cross-sectional shape of the outer tube 53 is circular, polygonal, or any other arbitrary shape, including but not limited to triangles, squares, hexagons, trapezoids, etc.

[0054] The end cap 54 is provided with a second through hole 543 for the inner tube 56 to pass through. The second through hole 543 of the end cap 54 is fitted onto the inner tube 56, and the connection between the end cap 54 and the inner tube 56 is sealed by welding or other means. This process is convenient for manufacturing. At the same time, the end cap 54 and / or the outer tube 53 are provided with an injection port 541 for injecting energy storage material into the energy storage chamber 52. After the energy storage material is injected, the injection port 541 is sealed by a sealing element 542.

[0055] The cross-sectional shape of the inner tube 56 can be circular, polygonal, or any other arbitrary shape. The cross-sectional shapes of the inner tube 56 and the outer tube 53 can be the same, making their relative positions readily apparent. Alternatively, the cross-sectional shapes of the inner tube 56 and the outer tube 53 can be different, increasing the range of choices available.

[0056] In a preferred embodiment, both ends of the inner tube 56 are exposed outward from the end cap 54, facilitating welding of the inner tube 56 to the outer shell 51. In other embodiments, such as Figure 9 As shown, an inwardly extending sleeve can also be provided on the end cap 54, with the inner tube 56 connected to the sleeve. In this case, the inner tube 56 is located inside the outer shell 51. Of course, the sleeve can also extend outward from the end cap 54.

[0057] The heat-conducting plate 57 can increase the heat transfer area, thereby improving the heat exchange rate. Therefore, the heat exchange rate within the energy storage cavity 52 can be changed by adjusting the structure and density of the heat-conducting plate 57. The following will provide a detailed description of the relative positions of the inner tube 56 and the outer tube 53, as well as the specific structure and arrangement of the heat-conducting plate 57.

[0058] The heat-conducting plate 57 includes a heat transfer plate 571 that is in contact with both the inner tube 56 and the outer shell 51. The heat transfer plate 571 supports and fixes the inner tube 56 while also enabling rapid heat exchange between the inner tube 56 and the outer shell 51. Thus, the inner tube 56 and the outer shell 51 exchange heat with the energy storage material in the energy storage cavity 52 from their inner and outer sides, respectively, thereby improving the heat exchange efficiency.

[0059] In one specific embodiment, the heat transfer plate 571 extends outward from the inner tube 56. "Extending outward" means that the heat transfer plate 571 has a tendency to extend outward from the inside, including but not limited to extending outward radially along the inner tube 56.

[0060] Furthermore, the heat transfer plate 571 includes an inner connecting part connected to the inner tube 56 and / or an outer connecting part connected to the outer shell 51, thereby improving the connection strength and heat transfer performance between the heat transfer plate 571 and the inner tube 56 and the outer tube 53.

[0061] The heat transfer plate 571 can be in the form of a sheet, an arc, or a spiral. A sheet shape is preferred for ease of manufacturing, especially when the inner tube 56, the heat transfer plate 571, and the outer shell 51 are integrally formed, significantly reducing the manufacturing difficulty. After being cut along the axial direction perpendicular to the inner tube 56, the cross-section of the heat transfer plate 571 is rectangular, triangular, trapezoidal, arc-shaped, etc.

[0062] Taking a sheet as an example, the thickness of the heat transfer sheet 571 is not less than 1.5mm, preferably between 1.5mm and 2mm. The heat transfer sheet 571 has sufficient strength to support and fix the inner tube 56. At the same time, the thermal resistance of the heat conduction sheet 571 of this thickness is small, which can effectively reduce the heat attenuation of the heat transfer sheet 571 and ensure effective heat transfer between the outer tube 53 and the inner tube 56.

[0063] As can be seen from the above, the more heat transfer plates 571 there are, the faster the heat exchange speed of the entire energy storage device 5. The number of heat transfer plates 571 is calculated based on their extension direction relative to the inner tube 56; that is, heat transfer plates 571 extending in different directions from the inner tube 56 are considered two different heat transfer plates 571. It is not directly calculated based on the connection point between heat transfer plates 571.

[0064] The inventors discovered that when at least two heat transfer plates 571 are included, the heat transfer plates 571 divide the energy storage cavity 52 into at least two sub-energy storage cavities 521. During use, when the energy storage material in the sub-energy storage cavity 521 undergoes a phase change and volume change, it can cause the outer shell 51 surrounding the sub-energy storage cavity 521 to deform or crack, affecting its use and aesthetics; or it can cause the heat transfer plates 571 surrounding the sub-energy storage cavity 521 to deform or break, affecting the heat exchange rate.

[0065] To address this technical problem, the energy storage device 5 further includes a connecting channel 55 that connects at least two of the sub-energy storage chambers 521. The connecting channel 55 connects the sub-energy storage chambers 521. When the energy storage material undergoes a phase change and expands in volume upon absorbing cold or heat (e.g., changing from liquid to solid), the liquid energy storage material can flow through the connecting channel 55 into adjacent sub-energy storage chambers 521, releasing pressure in individual sub-energy storage spaces and preventing the energy storage device 5 from deforming or bursting.

[0066] Specifically, the connecting channel 55 is located between the heat transfer plate 571 and the inner tube 56, or the connecting channel 55 is located between the heat transfer plate 571 and the outer shell 51; or the connecting channel 55 passes through the heat transfer plate 571, that is, the connecting channel 55 is disposed inside the heat transfer plate 571.

[0067] In a preferred embodiment, the heat transfer plate 571 extends axially along the inner tube 56, and the connecting channel 55 is located between at least one end of the heat transfer plate 571 along the axial direction of the inner tube 56 and the inner tube 56; and / or the connecting channel 55 is located between at least one end of the heat transfer plate 571 along the axial direction of the inner tube 56 and the outer shell 51. This design greatly reduces the processing difficulty, especially in the energy storage device 5 in which the inner tube 56, the heat transfer plate 571, and the outer tube 53 are integrally formed. After forming, a portion of the heat transfer plate 571 can be removed from at least one end along the axial direction of the inner tube 56 to form the connecting channel 55, making the process simple and feasible.

[0068] Furthermore, the heat-conducting plate 57 also includes at least one heat sink 572 located within the sub-energy storage cavity 521, which can further improve the heat exchange rate. The heat sink 572 is connected to the inner tube 56, and there is a gap between the heat sink 572 and the outer shell 51; or the heat sink 572 is connected to the outer shell 51, and there is a gap between the heat sink 572 and the inner tube 56.

[0069] The only structural difference between the heat sink 572 and the heat transfer plate 571 is that the thickness of the heat sink 572 is less than that of the heat transfer plate 571. This ensures that the heat exchange speed is improved without occupying too much of the energy storage cavity 52, while also reducing weight and cost.

[0070] Preferably, an auxiliary connecting channel 55' is provided on the heat sink 572 at a position corresponding to the connecting channel 55 to ensure unobstructed flow of the energy storage material. "Corresponding position" refers to the position where the connecting channel 55 is mapped onto the heat sink 572 along the circumference of the inner tube 56, allowing the fluid medium to quickly pass through the adjacent connecting channel 55 and the auxiliary connecting channel 55', thereby improving the flow rate.

[0071] Specifically, along the axial direction of the inner tube 56, at least one end of the heat transfer plate 571 and the heat sink 572 is located inside the outer shell 51 and has a gap between them. This gap forms the connecting channel 55, and the energy storage material in the different sub-energy storage chambers 521 flows through this gap.

[0072] In one specific embodiment, the inner tube 56 extends axially along the outer tube 53, and both ends of the inner tube 56 are exposed outward from the end cap 54. The two ends of the heat transfer plate 571 along the radial direction of the inner tube 56 are in contact with the inner tube 56 and the outer tube 53, respectively. There is a gap between the ends of the heat transfer plate 571 and the heat dissipation plate 572 along the axial direction of the inner tube 56 and the end cap 54, and this gap constitutes the connecting channel 55.

[0073] The inventors also discovered in their research that the phase change rate of the energy storage material is related to the rate at which it acquires cold or heat. The placement of the inner tube 56 within the outer tube 53, the structure and arrangement of the heat transfer plate 571, and / or the structure and arrangement of the heat sink 572 all affect the rate at which the energy storage material acquires cold or heat. The faster the energy storage material acquires cold or heat, the faster the phase change occurs.

[0074] The heat transfer plate 571 and the heat sink 572 divide the energy storage chamber 52 into several small, non-enclosed cavities. If the energy storage material at the outlet of the cavity undergoes a phase change that increases in volume before the energy storage material inside, for example, if the energy storage material at the outlet changes from liquid to solid before the energy storage material inside the cavity changes from liquid to solid, the outer shell 51, inner tube 56, or heat-conducting plate 57 surrounding the cavity will deform or burst. Conversely, if the energy storage material inside the cavity undergoes a phase change that increases in volume before the energy storage material at the outlet, that is, if the phase change rate of the energy storage material in the energy storage chamber 52 decreases from the inside to the outlet, then when a phase change that increases in volume occurs inside, the liquid or gaseous energy storage material flows outward, which can prevent the energy storage device 5 from deforming or bursting. Therefore, controlling the direction of the phase change rate change in at least a portion of the area within the energy storage chamber 52 is crucial.

[0075] In this invention, within a portion of the energy storage cavity 52, the structure and arrangement of the heat-conducting plate 57 meet at least one of the following conditions: the length of the heat-conducting plate 57 decreases along the circumference of the inner tube 56; the density of the heat-conducting plate 57 decreases along the circumference of the inner tube 56; and the thickness of the heat-conducting plate 57 decreases along the circumference of the inner tube 56. Along these decreasing directions, the heat or cold provided by the heat-conducting plate 57 to the energy storage liquid within the energy storage cavity decreases, and the phase change rate of the energy storage liquid decreases, thus preventing deformation or breakage of the energy storage device 5.

[0076] The aforementioned "partial energy storage cavity 52" refers to a portion of the energy storage cavity 52. ​​In the embodiment described above, where the heat-conducting plate 57 includes the heat transfer plate 571 and the heat dissipation plate 572, the aforementioned "partial energy storage cavity 52" refers to a sub-energy storage cavity 521 between two adjacent heat transfer plates 571. The aforementioned "reduction" refers to a decreasing trend within a unit volume, which can be a continuous decrease, an arithmetic decrease, or a discontinuous decrease such as a stepwise decrease.

[0077] Specifically, the heat-conducting plate 57 extends from the inner tube 56 in a direction away from the inner tube 56, and the heat-conducting plate 57 includes at least two heat transfer plates 571 that are in contact with both the inner tube 56 and the outer shell 51. The included angle between at least two adjacent heat transfer plates 571 is in the range of 90°≤α≤180°. The length of the heat dissipation plate 572 located between the two heat transfer plates 571 decreases along the circumference of the inner tube 56, and / or the arrangement density of the heat dissipation plate 572 decreases along the circumference of the inner tube 56, so that the heat transfer area of ​​the heat dissipation plate 572 decreases from one of the heat transfer plates 571 to the other heat transfer plate 571, and the energy storage liquid in the sub-energy storage cavity 521 gradually undergoes a phase change along the decreasing direction; and / or the thickness of the heat dissipation plate 572 decreases along the circumference of the inner tube 56, so that the heat attenuation of the heat dissipation plate 572 increases along the aforementioned decreasing direction, so that the energy storage liquid in the sub-energy storage cavity 521 gradually undergoes a phase change along the decreasing direction.

[0078] In the first type of embodiment, please refer to Figures 6-10 As shown, the inner tube 56 and the outer tube 53 are concentrically arranged, that is, the central axis of the inner tube 56 coincides with the central axis of the outer tube 53. The entire energy storage device 5 is relatively balanced, easy to manufacture, and has a long service life. At this time, by adjusting at least one of the structure or the density of the heat-conducting plate 57, the phase change sequence of the energy storage material in different regions can be controlled.

[0079] For details, please refer to Figures 6-10 As shown, from one heat transfer fin 571 to another adjacent heat transfer fin 571, the density of the heat transfer fins 572 decreases, and / or the length of the heat transfer fins 572 decreases. Therefore, in regions with high density or long length of heat transfer fins 572, the sum of the heat transfer areas of the heat transfer fins 572 is large, and the regions with large heat transfer areas undergo phase change first, while the regions with small heat transfer areas undergo phase change later; this allows the energy storage material to move along... Figure 8 The arrows indicate a gradual phase transition, preventing the energy storage device 5 from deforming or breaking.

[0080] Specifically, along the circumference of the inner tube 56, the heat sinks 572 have the same length, and the density between adjacent heat-conducting fins 57 decreases, meaning the angle between adjacent heat-conducting fins 57 increases. The smaller the angle, the smaller the cavity between two adjacent heat-conducting fins 57, and the faster the energy storage material within this cavity acquires cold or heat, resulting in an earlier phase change. The angle between the heat-conducting fins 57 includes the angle between adjacent heat transfer fins 571 and heat sinks 572, and the angle between two adjacent heat sinks 572.

[0081] Alternatively, along the circumference of the inner tube 56, the included angle between adjacent heat-conducting fins 57 is the same, and the length of the heat sink 572 decreases. The longer the heat sink 572, the larger its heat transfer area, and the faster the adjacent energy storage material acquires cold or heat, and the earlier the phase change occurs. Please refer to... Figure 7 As shown, the longer the length La of the heat sink 572, the shorter the distance Lb between the heat sink 572 and the outer casing 51; for example, Lb1 is less than Lb2.

[0082] Preferably, please refer to Figures 7-9 As shown, along the circumference of the inner tube 56, the included angle between adjacent heat-conducting plates 57 increases, and the length of the heat sink 572 decreases. The greater the difference in the rate at which different regions acquire cold or heat, the more conducive it is to the gradual occurrence of phase change.

[0083] Furthermore, along the circumference of the inner tube 56, the thickness of the heat-conducting plate 57 gradually decreases. The greater the thickness of the heat-conducting plate, the smaller its heat attenuation, the smaller its thermal resistance, and the faster its heat transfer speed, thus achieving the aforementioned technical effects.

[0084] Furthermore, based on the above specific embodiment, the outer tube 53 has a first end and a second end located on opposite sides of its central axis. The heat-conducting plate 57 includes two heat transfer plates 571 extending towards the first end and the second end respectively. These two heat transfer plates 571 divide the energy storage cavity 52 into two symmetrically arranged sub-energy storage cavities 521. The heat dissipation plates 572 located within the two sub-energy storage cavities 521 are symmetrically arranged relative to the heat transfer plates 571. Therefore, from the first end to the second end, the phase change rate of the energy storage liquid in the two sub-energy storage cavities 521 is consistent, that is, the phase change rate of the energy storage liquid on both sides of the two heat transfer plates 571 is basically consistent, which can prevent the heat transfer plates 571 from deforming or breaking.

[0085] Please see Figure 8 As shown, the energy storage material at each point within the energy storage cavity 52 obtains either cold or heat from the adjacent inner tube 56, heat-conducting plate 57, and outer tube 53. Figure 8 The middle arrows indicate the order in which energy is acquired at different points. During use, when installing the energy storage device 5, the side of the heat-conducting plate 57 with the higher density should be placed at the bottom, and the side with the lower density should be placed at the top, so that the liquid or gaseous energy storage material flows upward and avoids tube expansion.

[0086] Taking the cooling of the energy storage device 5 through the inner tube 56 as an example, between every two heat-conducting plates 57, the energy storage material in the area closer to the inner tube 56 acquires cold energy faster and crystallizes earlier; the energy storage material in the area with a higher density of heat-conducting plates 57 acquires heat or cold energy faster and crystallizes earlier; therefore, the energy storage material gradually undergoes a phase change in the direction indicated by the arrow, and the gas and liquid can flow upward effectively, effectively avoiding tube expansion.

[0087] Additionally, please see Figures 11-16 As shown, the inner tube 56 and the outer tube 53 are eccentrically arranged, that is, the central axis of the inner tube 56 is offset from the central axis of the outer tube 53.

[0088] Specifically, the outer tube 53 has a first end and a second end located on opposite sides of its central axis. After the inner tube 56 is offset towards the first end, the heat exchange rate between the energy storage material located on the first end side and the inner tube 56 is faster than that between the energy storage material located on the second end side and the inner tube 56. If the inner tube 56 is connected to the charging and cooling unit, the energy storage material located on the first end side cools down faster and undergoes a phase change first; while the energy storage material located on the second end side cools down slower and undergoes a phase change later. This can effectively control the phase change of the energy storage material in the energy storage chamber 52 from the first end to the second end, avoiding deformation or cracking of the energy storage device 5 due to disordered phase change direction.

[0089] In the second type of embodiment, please refer to Figure 11 or Figure 12 As shown, the offset distance between the central axis of the inner tube 56 and the central axis of the outer tube 53 is not greater than the threshold L1, and the heat-conducting plate 57 extends outward from the inner tube 56 along the radial direction of the inner tube 56.

[0090] In one specific embodiment, such as Figure 11 The included angles between adjacent heat-conducting plates 57 are equal along the circumference of the inner tube 56, and the lengths of the heat sinks 571 are the same. Based on the eccentric arrangement of the inner tube 56, it is also beneficial for the energy storage material to gradually undergo phase change.

[0091] The heat-conducting plate 57 includes two heat transfer plates 571, and the two heat transfer plates 571 divide the energy storage cavity 52 into two sub-energy storage cavities 521; the heat-conducting plate 57 also includes a plurality of heat dissipation plates 572 connected to the inner tube 56 and located in the sub-energy storage cavity 521, the heat dissipation plates 572 have a gap with the outer shell 51, and in each sub-energy storage cavity 521, the plurality of heat dissipation plates 572 are evenly arranged along the circumference of the inner tube 56.

[0092] Preferably, the heat sinks 572 located in the two sub-energy storage cavities 521 are symmetrically arranged relative to the heat transfer plates 571.

[0093] like Figure 12 As shown, the arrangement of the heat sink 572 is similar to... Figures 7-9 The embodiments shown are the same and will not be described again here. Based on the eccentric arrangement of the inner tube 56, and the combined effect of the reduced length or density of the heat sink 572, it is more conducive to the gradual phase change of the energy storage material.

[0094] In the third type of embodiment, please refer to Figures 13-16 As shown, the inner tube 56 is offset from the central axis of the outer tube 53 at the first end, and the offset distance is not less than the threshold L2. At this time, the offset distance of the inner tube 56 is large, and the amount of cold or heat it carries is much greater than that of the heat-conducting plate 57. Therefore, the amount of heat or cold obtained by the energy storage material from the inner tube 56, the heat-conducting plate 57 and the outer tube 53 generally decreases from the first end to the second end. This causes the energy storage material to gradually undergo phase change in one direction, avoiding phase change from multiple directions towards the middle, which would cause the energy storage device 5 to deform or crack.

[0095] Specifically, such as Figure 13 As shown, when the offset distance is between the threshold L2 and the threshold L3, L2 is less than L3; the heat sinks 572 all extend outward from the inner tube 56.

[0096] In one embodiment, two heat transfer plates 571 extending toward the first end and the second end respectively divide the energy storage cavity 52 into two symmetrically arranged sub-energy storage cavities 521. A plurality of heat sinks 572 are in contact with the inner tube 56 and there is a gap between the heat sinks 572 and the outer shell 51. In the sub-energy storage space 111, along the circumference of the inner tube 56 from the first end to the second end, the length and / or arrangement density of the heat sinks 572 increase.

[0097] Specifically, along the circumference of the inner tube 56 from the first end to the second end, the lengths of the heat sinks 572 are the same, and the included angle between adjacent heat-conducting fins 57 decreases. Alternatively, along the circumference of the inner tube 56 from the first end to the second end, the included angle between adjacent heat-conducting fins 57 is the same, and the length of the heat-conducting fins 57 increases. Preferably, along the circumference of the inner tube 56 from the first end to the second end, the included angle between adjacent heat-conducting fins 57 decreases, and the length of the heat-conducting fins 57 increases.

[0098] In the above specific embodiments, due to the large offset distance of the inner tube 56, the heat or cold energy obtained by the energy storage material from the inner tube 56, the heat-conducting plate 57 and the outer tube 53 tends to decrease from the first end to the second end; this causes the energy storage material to gradually undergo phase change in one direction, avoiding phase change from multiple directions towards the middle, which would cause the energy storage device 5 to deform or crack; at the same time, the energy storage speed of the entire energy storage device 5 is relatively fast.

[0099] Furthermore, the heat sinks 572 located in the two sub-energy storage cavities 521 are symmetrically arranged relative to the heat transfer plates 571.

[0100] When the offset distance is not less than the threshold L3, L2 is less than L3, and the distance between the inner tube 56 and the outer tube 53 is relatively close. If the heat sink 572 extends towards the offset side, the distance between the heat sink 572 and the outer tube 53 will be relatively close, which is not conducive to the flow of liquid or gaseous energy storage materials. Therefore, the heat sink 572 extends from the inner tube 56 beyond the first end and simultaneously in a direction away from the inner tube 56.

[0101] For details, please refer to Figures 14-16 As shown, from the first end to the second end, the length of the heat sink 572 increases, but the heat or cold energy obtained by the energy storage material from the inner tube 56, the heat-conducting plate 57 and the outer tube 53 generally shows a decreasing trend.

[0102] In practical use, the first end of the energy storage chamber 52 is placed at the bottom and the second end of the energy storage chamber 52 is placed at the top, so that the liquid or gaseous energy storage material flows upward and avoids tube expansion.

[0103] Furthermore, the outer wall of the housing 51 has markings indicating the first end and / or the second end; or, the markings indicate the direction of the reduction mentioned above. When installing the energy storage device 5, the markings serve as a reminder to avoid placing the side with lower heat transfer density downwards, which could cause cracking.

[0104] Furthermore, based on all the above implementation schemes, the inner tube 56, the heat-conducting plate 57, and the outer tube 53 are integrally formed or integrally set, resulting in a significantly better heat transfer effect than post-assembly schemes. Aluminum or aluminum alloy materials are preferred due to their light weight and fast heat transfer speed.

[0105] The specific processing technology is as follows: the inner tube 56, the heat transfer plate 571 and the outer tube 53 are integrally formed; the connecting channel 55 is formed at the edge of the heat-conducting plate 57 along the axial direction of the inner tube 56, for example, removing part of the heat-conducting plate 57 so that the heat-conducting plate 57 is located inside the outer tube 53; the end cap 54 is welded to the outer shell 51; energy storage material is injected into the energy storage chamber 52 from the injection port 541, and then the injection port 541 is sealed.

[0106] The energy supply component 8 is used to transfer the energy stored in the energy storage device 5 to the storage compartment 3 to preserve the products located therein. Products transported in the cold chain are pre-cooled / pre-heated before or after loading to reach the required storage temperature. The energy storage device 5 provides heat or cold to the products during transportation to maintain a suitable storage temperature.

[0107] Specifically, the power supply component 8 includes a power supply air duct 81 connected to the storage chamber 3 and a power supply fan 82 that drives air to circulate within the power supply air duct 81 and the storage chamber 3. The power supply fan 82 is disposed within the power supply air duct 81 or within the storage chamber 3.

[0108] Part of the energy supply air duct 81 is arranged adjacent to the energy storage chamber 4, and a heat-conducting plate 41 is connected between the energy supply air duct 81 and the energy storage chamber 4. That is, the energy supply air duct 81 and the heat-conducting plate 41 of the energy storage chamber 4 are arranged adjacent to each other. The heat-conducting plate 41 can be made of a metal material with good thermal conductivity, or a coating with good thermal conductivity such as graphene can be sprayed onto some metal materials. Air circulates within the energy supply air duct 81 and the storage chamber 3, obtains energy from the energy storage device 5 through the heat-conducting plate 41, and then circulates into the storage chamber 3 to keep the products inside fresh. Air does not enter the cold storage chamber 4, therefore condensation or frost will not occur on the energy storage device 5.

[0109] The energy supply duct 81 includes a first duct 811 connected to the storage chamber 3, a return air inlet 812 disposed on the return air insulation plate 31 located at the bottom of the storage chamber 3, a second duct 813 connected to the return air inlet 812, and a third duct 814 connecting the first duct 811 and the second duct 813. At least a portion of the first duct 811, the second duct 813 and the third duct 814 are disposed adjacent to the energy storage chamber 4 to obtain heat or cold from the energy storage device 5.

[0110] Considering that most of the products stored and transported in the unit delivery box are refrigerated or frozen, the first air duct 811 is connected to the upper half of the storage chamber 3. Cold air is blown into the storage chamber 3 from the top through the first air duct 811, which conforms to the principle of cold air sinking. Furthermore, when there are few products that need to be refrigerated / frozen, the top of the storage chamber 3 is idle, and the cold air will not blow directly onto the products, thus avoiding local freezing damage to the products.

[0111] When the energy storage chamber 4 is located below the storage chamber 3, the first air duct 811 extends vertically into the upper half of the storage chamber 3, and the second air duct 813 also extends vertically. Parts of the first air duct 811 and the second air duct 813 are arranged adjacent to the energy storage chamber 4 through the heat-conducting plate 41 to ensure an effective supply of heat or cold.

[0112] The third air duct 814 is located at the bottom of the energy storage chamber 4 and is arranged adjacent to the energy storage chamber 4. It has a large heat exchange area and high heat exchange efficiency.

[0113] In one specific embodiment, the first air duct 811 and the second air duct 813 are respectively disposed on opposite sides of the energy storage chamber 4, and the first air duct 811, the second air duct 813, and the third air duct 814 are arranged around the energy storage chamber 4.

[0114] The cold storage chamber 4 and the storage chamber 3 are separated by a return air insulation plate 31. The bottom wall and the pair of opposite side walls of the cold storage chamber 4 are both heat-conducting plates 41. The first air duct 811 is disposed between one of the side walls and the housing 1, and the side wall has a bent first air duct plate 811' before the housing 1. The first air duct plate 811' divides the first air duct 811 into several sub-air paths. The second air duct 813 is disposed between the other side wall and the housing 1, and the power supply fan 82 is disposed in the second air duct 813. The third air duct 814 is disposed between the bottom wall and the partition plate located below the bottom wall, and the bottom wall and the partition plate have a bent second air duct plate 814'. The second air duct plate 814' divides the second air duct 813 into several sub-air paths. The several sub-air paths of the first air duct 811 correspond one-to-one with the several sub-air paths of the second air duct 813. There is only one heat-conducting plate 41 between the second air duct 813 and the energy storage chamber 4, and the second air duct 813 is relatively wide; the second air duct 813 can also be understood as a cooling zone divided in the energy storage chamber 4 by the heat-conducting plate 41.

[0115] Preferably, the heat-conducting plate 41 located at the bottom of the cold storage chamber 4 is provided with a groove 411 for holding or positioning the energy storage device 5, preventing the energy storage device 5 from shifting during transportation. And / or, the heat-conducting plate 41 is provided with a first through hole 412 penetrating the heat-conducting plate 41. The first through hole 412 can be located inside or outside the groove 411, which can improve heat exchange efficiency. In addition, the first through hole 412 connects the energy storage chamber 4 and the third air duct 814, and can also ensure unobstructed airflow when the housing 1 is deformed and the air duct is damaged due to external force during transportation, thus obstructing cooling.

[0116] In addition, the first air duct 811 and at least part of the return air vents 812 are respectively arranged on opposite sides of the storage room 3, which facilitates air circulation in the storage room 3.

[0117] Furthermore, the return air insulation plate 31 includes a top plate 311, a bottom plate 312, and a flow cavity 313 located between the top plate 311 and the bottom plate 312. The return air inlet 812 passes through the top plate 311 and the bottom plate 312 and communicates with the flow cavity 313. An auxiliary return air inlet 812' is provided on the side of the top plate 311 near the first air duct 811. Air in the storage room 3 can also enter the second air duct 813 through the auxiliary return air inlet 812', the flow cavity 313, and the return air inlet 812. Air in the storage room 3 can also return to the storage room 3 through the return air inlet 812, the flow cavity 313, and the auxiliary return air inlet 812'. This can effectively avoid the existence of dead corners in the storage room 3 and the uneven temperature distribution in the storage room 3.

[0118] Preferably, the top plate 311 or the bottom plate 312 is provided with reinforcing ribs 314 having flow holes 315, which can enhance the strength of the return air insulation plate 31.

[0119] Furthermore, the power supply component 8 also includes a temperature sensor (not shown) located within the storage compartment 3. Both the temperature sensor and the power supply fan 82 are communicatively connected to the controller 10. Based on the temperature within the storage compartment 3, the operating state of the power supply fan 82 is controlled to provide hot or cold air to the storage compartment 3, maintaining its temperature within a very small range. The operating state of the power supply fan 82 includes, but is not limited to, the fan speed and the duty cycle of the fan's start and stop.

[0120] The unit delivery box 100 also includes a refrigeration unit 9, which includes a compressor, a condenser, a throttling element, and an evaporator 90 connected in a refrigeration circuit. The refrigeration unit 9 provides cooling or heating to the energy storage device 5, allowing for energy storage to be completed at any location without a designated cooling station. Simultaneously, the refrigeration unit 9 can also provide cooling to the storage compartment 3, pre-cooling the products located within it.

[0121] In this invention, the evaporator 90 is disposed within the energy storage chamber 4 to store cold for the energy storage device 5. The cold storage methods include, but are not limited to:

[0122] In one embodiment, the energy storage device 5 has a flow channel 6, and the evaporator 90 is installed within the flow channel 6, resulting in rapid cold storage. Especially in the embodiment with the inner tube 56, the outer wall of the evaporator 90's pipes and the inner tube 56 are fitted together without gaps within the assembly error range; therefore, the cold energy transfer process is: refrigerant in the evaporator → evaporator 90's pipes → inner tube 56 → cold storage liquid in the energy storage device 5; cold energy is transferred between liquid-solid, solid-solid, and solid-liquid, resulting in minimal heat loss, ensuring rapid and effective heat transfer, and reducing heat transfer losses.

[0123] In another embodiment, the energy storage device 5 can be any of the above-mentioned types. The energy storage chamber 4 is provided with a support partition 42. The evaporator 90 and the energy storage device 5 are respectively located on both sides of the support partition 42. The support partition 42 is provided with an energy storage fan 43 to promote the flow of air in the gap between the flow channel 6 or the energy storage device 5 and to complete heat exchange with the energy storage device 5.

[0124] Preferably, the evaporator 90 is located above the supporting partition 42, and the energy storage device 5 is located below the supporting partition 42. On the one hand, cold air sinks during cold storage, increasing the cold storage speed; on the other hand, the energy storage device 5 contacts the heat exchange plate located at the bottom of the energy storage chamber 4, transferring heat to the air located in the third channel, thus improving the heat exchange efficiency. Of course, the two can also be interchanged.

[0125] Preferably, the unit delivery box 100 further includes a compressor compartment 91 located below the energy storage chamber 4. The walls of the compressor compartment 91 are provided with heat dissipation holes 92, and the compressor and the condenser are located within the compressor compartment 91. On one hand, the energy storage chamber 4 separates the compressor compartment 91 from the storage box 4, preventing the heat released by the refrigeration unit 9 during operation from directly affecting the temperature of the storage box 2. On the other hand, the lower center of gravity of the entire unit delivery box 100 prevents it from tipping over during lifting.

[0126] The unit delivery box 100 also includes a heating component 7 that provides heat to the storage compartment 3 to compensate for the temperature of the storage compartment 3 when the temperature is too low, or to keep the goods warm in cold regions.

[0127] The heating component 7 includes a heater 71 and a heating fan 72 located in the storage chamber 3. Of course, when both a power supply fan 82 and a heating fan 72 are installed in the storage chamber 3, the two can share the same fan.

[0128] Preferably, the heating component 7 is arranged adjacent to the air outlet of the first air duct 811 leading to the storage chamber 3, and heat is supplied from the area with the lowest temperature in the storage chamber 3, which can effectively prevent local overcooling.

[0129] In this invention, all components requiring electricity, such as the fan and controller 10, are equipped with their own batteries. Preferably, the unit delivery box 100 further includes a battery assembly 102, which provides power to other components requiring electricity.

[0130] In one specific embodiment, the battery assembly 102 is located inside the compressor chamber 91. On the one hand, the heat generated during its operation is discharged to the outside through the heat dissipation hole 92, which will not affect the temperature inside the storage chamber 3 and the cold storage chamber 4. On the other hand, it is convenient to charge or replace the battery assembly 102.

[0131] The present invention also provides a logistics delivery vehicle, including a vehicle and any of the above-mentioned unit delivery boxes 100, wherein the vehicle includes, but is not limited to, a truck. By separating the unit delivery box 100 from the vehicle, the vehicle can still be used for transporting other products during the loading and unloading of goods and pre-cooling / cooling processes of the unit delivery box 100. Furthermore, the unit delivery box 100 is not limited to a specific vehicle, and the convenience of combined use far exceeds that of existing refrigerated trucks.

[0132] In summary, the storage chamber 3 and the energy storage chamber 4 of the unit delivery box 100 of the present invention are independently arranged, and the energy storage device 5 indirectly provides cooling or heating to the storage chamber 3 through the energy supply component 8. On the one hand, loading goods into the storage chamber 3 and pre-cooling the goods can be carried out simultaneously with storing cold energy in the energy storage device 5, saving time. Furthermore, since the two chambers are independent, opening the storage chamber 3 will not cause cold leakage in the energy storage device 5. On the other hand, during the energy storage process, the energy storage device 5 has minimal impact on the temperature inside the storage chamber 3, preventing the goods from freezing. During the energy supply process, the temperature inside the storage chamber 3 is highly controllable with minimal temperature fluctuations. Simultaneously, placing the energy storage chamber 4 below the storage chamber 3 lowers the center of gravity, preventing tipping during lifting.

[0133] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0134] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A unit delivery box, comprising a storage compartment, characterized in that, The unit delivery box further includes an energy storage chamber, an energy storage device located within the energy storage chamber, an energy supply component, and a controller. The energy supply component includes a temperature sensor located within the storage chamber, an energy supply duct communicating with the storage chamber, and an energy supply fan that circulates air between the energy supply duct and the storage chamber. The energy supply duct includes a first duct communicating with the storage chamber, a return air inlet on a return air insulation plate located at the bottom of the storage chamber, a second duct communicating with the return air inlet, and a third duct communicating with the first and second ducts. At least a portion of the first, second, and third ducts are adjacent to the energy storage chamber, and a heat-conducting plate is placed between the energy supply duct adjacent to the energy storage chamber and the energy storage chamber. The temperature sensor, the energy supply fan, and the controller are communicatively connected. The first air duct and at least a portion of the return air inlets are respectively disposed on opposite sides of the storage chamber; the return air insulation plate includes a top plate, a bottom plate, and a flow cavity located between the top plate and the bottom plate, the return air inlet passes through the top plate and the bottom plate and communicates with the flow cavity, and an auxiliary return air inlet communicating with the flow cavity is provided on the side of the top plate near the first air duct, the air in the storage chamber enters the second air duct through the auxiliary return air inlet, the flow cavity, and the return air inlet; or the air in the storage chamber returns to the storage chamber through the return air inlet, the flow cavity, and the auxiliary return air inlet.

2. The unit delivery box according to claim 1, characterized in that, The power supply fan is located in the storage room, or the power supply fan is located in the power supply duct.

3. The unit delivery box according to claim 2, characterized in that, The energy storage chamber is located below the storage chamber, and the first air duct and the second air duct both extend vertically and are adjacent to the energy storage chamber.

4. The unit delivery box according to claim 3, characterized in that, The third air duct is located at the bottom of the energy storage chamber and is arranged adjacent to the energy storage chamber.

5. The unit delivery box according to claim 1, characterized in that, The first air duct connects to the upper half of the storage room.

6. The unit delivery box according to claim 1, characterized in that, The top plate or the bottom plate is provided with reinforcing ribs having flow holes.

7. The unit delivery box according to claim 1, characterized in that, The energy storage device includes a housing and energy storage material stored inside the housing.

8. The unit delivery box according to claim 7, characterized in that, The energy storage device also includes a flow channel passing through the outer casing.

9. The unit delivery box according to claim 1, characterized in that, The heat-conducting plate is provided with grooves for holding or positioning the energy storage device and / or through holes penetrating the heat-conducting plate.

10. The unit delivery box according to any one of claims 1 to 9, characterized in that, The unit delivery box also includes a refrigeration unit, which includes a compressor, a condenser, a throttling element, and an evaporator connected to form a refrigeration circuit. The evaporator is located in the energy storage chamber.

11. The unit delivery box according to claim 10, characterized in that, The evaporator's piping passes through the energy storage device; Alternatively, the energy storage chamber is provided with a supporting partition, the supporting partition is provided with an energy storage fan, the evaporator is located above the supporting partition, and the energy storage device is located below the supporting partition; Alternatively, the energy storage chamber is provided with a supporting partition, the supporting partition is provided with an energy storage fan, the energy storage device is located above the supporting partition, and the evaporator is located below the supporting partition.

12. The unit delivery box according to claim 1, characterized in that, The unit delivery box also includes a heating assembly for providing heat to the storage compartment, the heating assembly including a heater and a heating fan located inside the storage compartment.

13. The unit delivery box according to claim 12, characterized in that, The first air duct connects to the upper half of the storage room, and the heating component is arranged adjacent to the air outlet of the first air duct leading to the storage room.

14. The unit delivery box according to claim 1, characterized in that, All components that require electricity are equipped with their own batteries; Alternatively, the unit delivery box may also include a battery assembly, which provides power to other components that require electricity.

15. A logistics delivery vehicle, characterized in that, The logistics delivery vehicle includes the unit delivery box as described in any one of claims 1 to 14.

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