Novel energy storage heat exchange system and control method

Abstract

The invention discloses a novel energy storage heat exchange system and a control method, and relates to the technical field of refrigeration. The system comprises an energy storage body containing a cold storage medium; the cooling channel penetrates through the air duct system of the energy storage body; the heat exchange part is communicated with the cold source and comprises a first heat exchange structure in contact with the cold storage medium; and the air guide part drives air to flow through the cooling channel. The first heat exchange structure is provided with a channel and / or a heat exchange piece used for circulating a cold source and used for efficiently transferring the cold energy of the cold source to the cold storage medium and / or transferring the cold energy to air through the cooling channel wall. Optionally, a second heat exchange structure is arranged in the cooling channel to further strengthen heat exchange of the air. By optimizing the heat exchange structure, the efficiency of refrigerating and cold accumulation of the system by using a cold source is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration, and particularly to a novel energy storage heat exchange system and a control method thereof. Background Art

[0002] As cars have become an important part of modern life, people's requirements for in-vehicle comfort and convenience have been increasing day by day. As a device that can provide refrigerated or frozen food and beverages for drivers and passengers, in-vehicle refrigerators have received wide attention. Currently, there are mainly two types of in-vehicle refrigerators on the market: thermoelectric refrigerators and compressor refrigerators.

[0003] Thermoelectric refrigerators use the Peltier effect for refrigeration. Their advantages are simple structure, small size, no noise and vibration caused by moving parts, and relatively low cost. However, their disadvantages are also very prominent: low refrigeration efficiency, resulting in high energy consumption; limited refrigeration capacity, usually only able to achieve a temperature difference of 15 - 20°C lower than the ambient temperature, making it difficult to meet the requirements of refrigerated storage or even freezing; slow cooling speed.

[0004] Compressor refrigerators adopt a vapor compression refrigeration cycle similar to that of household refrigerators, which can provide fast and strong refrigeration effects, reaching refrigeration temperatures below 0°C and even freezing temperatures of -18°C, and also have relatively high refrigeration efficiency. However, such refrigerators need to be equipped with a complete set of refrigeration systems, including compressors, condensers, evaporators, and throttling devices, resulting in their complex structure, large volume, and heavy weight. They not only occupy the in-vehicle space but may also affect the vehicle's fuel economy or driving range. At the same time, the compressor generates certain noise and vibration during operation, affecting the driving experience. In addition, the cost of such refrigerators is also relatively high.

[0005] More importantly, both of the above two types of in-vehicle refrigerators face a common problem: how to continue refrigerating after the vehicle engine is turned off. The traditional solution is to rely on the vehicle's battery for power supply, but this will consume a large amount of electrical energy, which may affect the normal startup of the vehicle. Especially in the case of long-term parking, when the battery runs out of power, the refrigerator will lose its refrigeration capacity, and the internal temperature will rise rapidly, unable to guarantee the storage quality of items.

[0006] In order to solve these problems, researchers began to explore solutions to integrate vehicle refrigerators with the vehicle's own air conditioning system. Vehicle air conditioning systems usually have a refrigeration power that far exceeds the needs of refrigerators. Using its "surplus" cold capacity to cool the refrigerator can save the refrigerator's own compressor and condenser, thereby achieving miniaturization, light weight, low noise and low cost. However, simple integration methods, such as directly introducing air conditioning cold air or through a simple external heat exchanger, often have problems such as low heat exchange efficiency, imprecise temperature control, and inability to utilize cold storage. Although some solutions that introduce the concept of cold storage can solve the problem of cooling after the engine is turned off to a certain extent, there is still room for improvement in the efficiency of cold storage / release, the compactness of the structure, and the intelligence of the control strategy. For example, how to efficiently store cold in a limited volume? How to quickly and effectively release the stored cold to the inside of the refrigerator? How to intelligently manage the cold storage and release process according to actual needs and vehicle status? How to integrate the air conditioning system while meeting the user's demand for deep freezing (such as -18°C)? These are challenges that existing technologies have not been able to perfectly solve.

[0007] Therefore, developing a new cold storage technology solution can not only make full use of the advantages of existing cold sources, but also achieve long-term cooling after shutdown through efficient cold storage technology. At the same time, it has a compact structure, quiet operation, intelligent temperature control capabilities and optional deep cooling functions, which has important practical significance and market value. Summary of the invention

[0008] The present invention aims to solve the problem of low cold transfer efficiency in the cold storage system that utilizes a cold source of a vehicle air conditioner to store cold in a cold storage medium and to cool the air in the prior art. The existing technical solutions are often not sufficiently optimized in the design of the heat exchange structure between the cold source and the cold storage medium, between the cold source and the air flowing through, and between the cold storage medium and the air flowing through, resulting in a slow cold storage speed, poor direct cooling effect on the air, and low overall energy efficiency, thereby affecting the performance of equipment such as vehicle refrigerators. The main purpose of the present invention is to provide an improved new energy storage heat exchange system and control method to significantly improve the efficiency of cold transfer between the various media within the system.

[0009] In order to solve the above technical problems, the first aspect of the present invention provides a novel energy storage heat exchange system, comprising:

[0010] An energy storage body, used for absorbing and storing cold energy transmitted from a cold source; the energy storage body comprises a shell having an internal accommodation space and a cold storage medium filled in the internal accommodation space;

[0011] Air duct system, comprising: an air inlet channel having at least one air inlet for air to enter; an air outlet channel having at least one air outlet for air to discharge; a cooling channel running through the internal accommodation space of the energy storage body and sealed with the energy storage body, with both ends of the cooling channel communicating with the air inlet channel and the air outlet channel respectively;

[0012] A heat exchange part, communicating with a cold source and adapted to receive the cold source from the cold source; the heat exchange part includes a first heat exchange structure in contact with the cold storage medium;

[0013] An air guiding part for driving air to flow through the air inlet channel, the cooling channel and the air outlet channel in sequence;

[0014] Wherein, when the cold source is introduced into the first heat exchange structure, the first heat exchange structure is adapted to cool the cold storage medium to store cold energy, and / or directly cool the air flowing through the cooling channel; and, the air flowing through the cooling channel is adapted to exchange heat with the cold storage medium and / or the first heat exchange structure to be cooled, and the cooled air is sent out from the air outlet channel.

[0015] As a preferred technical solution, the cooling channel includes at least one air duct; the outer wall of the air duct is in direct contact with the cold storage medium and / or the first heat exchange structure. This enables efficient heat exchange between the air flowing in the air duct and the external cold storage medium or the first heat exchange structure through the air duct wall.

[0016] As a preferred technical solution, the first heat exchange structure includes at least one first heat exchange fin for increasing the heat exchange area between the cold source and the cold storage medium, and at least one cold source channel for the cold source to flow through; the cold source channel is at least partially immersed in the cold storage medium. By providing the first heat exchange fins and the immersive cold source channel, the contact area and heat exchange efficiency between the cold source and the cold storage medium are significantly increased, which is beneficial to rapid cold storage.

[0017] As a preferred technical solution, the first heat exchange fin is connected to the outer wall of the air duct. This structure combines the heat exchange fin with the air duct wall, enabling the cold source to not only efficiently cool the cold storage medium, but also directly transfer its cold energy to the air flowing through the air duct through the heat exchange fin and the air duct wall, achieving the dual effects of cold storage and direct refrigeration.

[0018] As a preferred technical solution, the cold source channel is connected to the outer wall of the first heat exchange fin and / or the cooling channel. This arrangement ensures the close combination of the cold source channel and the heat dissipation structure, which is beneficial to the rapid conduction of cold energy.

[0019] As a preferred technical solution, the cooling channel includes at least one air duct; the heat exchange part further has a second heat exchange structure located inside the air duct, and the second heat exchange structure includes at least one second heat exchange fin for increasing the heat exchange area between the air flowing through the air duct and the cold source. Adding the second heat exchange structure inside the air duct can directly perform forced cooling on the air, further improving the refrigeration efficiency and the temperature reduction speed.

[0020] As a preferred technical solution, the second heat exchange fin is connected to the inner wall of the air duct. This ensures sufficient contact between the heat exchange fin and the flowing air.

[0021] As a preferred technical solution, the heat exchange part further includes a temperature control valve, and the temperature control valve is arranged on the pipeline for introducing the cold source into the heat exchange part, and is used to adjust the cold source flow rate flowing into the heat exchange part according to the temperature of the energy storage body. Through the temperature control valve, the cold source flow rate can be intelligently controlled according to the cold storage demand, avoiding excessive cold storage or wasting of cold energy.

[0022] As a preferred technical solution, the air guiding part includes a fan; at least one of the positions between the air inlet channel and the cooling channel, or between the air outlet channel and the cooling channel, at the air inlet, at the air outlet, and inside the cooling channel is provided with a fan. The fan provides the power for air flow, and its position can be flexibly selected according to the specific design.

[0023] The second aspect of the present invention provides a control method for an energy storage heat exchange system, the energy storage heat exchange system includes an energy storage body, a heat exchange part communicating with a cold source, and an air guiding part for driving air to flow through the energy storage body for heat exchange; the energy storage body includes a housing having an internal accommodation space and a cold storage medium filled in the internal accommodation space; the control method includes the following steps:

[0024] Obtain the actual temperature TC in the storage space served by the energy storage heat exchange system and the target temperature TS set by the user;

[0025] Obtain the actual temperature TX of the energy storage body and the cold storage saturation temperature TXb of the cold storage medium;

[0026] According to the comparison result between the actual temperature TC and the target temperature TS, and the comparison result between the actual temperature TX and the cold storage saturation temperature TXb, control the operating state of the air guiding part and the interaction state between the heat exchange part and the cold source.

[0027] In some alternative embodiments of the present invention, controlling the operating state of the air guiding part and the interaction state between the heat exchange part and the cold source specifically refers to controlling the operating state of the air guiding part and the interaction state between the heat exchange part and the refrigerant in the air conditioning system.

[0028] In some alternative embodiments of the present invention, the steps of controlling the operating state of the air guiding part and the interaction state between the heat exchange part and the cold source include: when it is detected that the actual temperature TC is greater than the first temperature threshold determined based on the target temperature TS, the air guiding part is turned on, and the heat exchange part receives cold energy from the cold source. This ensures that the basic cooling function can respond quickly.

[0029] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0030] 1. High-efficiency heat exchange: Through the optimized design of the first heat exchange structure (the first heat exchange fins, the immersion of the cold source channel) and the second heat exchange structure (the second heat exchange fins), the heat exchange efficiency from the cold source to the cold energy storage medium, from the cold source to the air, and from the cold energy storage medium to the air is significantly improved.

[0031] 2. Fast cold energy storage and refrigeration: The efficient heat exchange structure enables faster cold energy storage, and at the same time, the ability to directly cool the air is enhanced, improving the refrigeration response speed.

[0032] 3. Compact and optimized structure: The close integration of the heat exchange structure with the energy storage body and the cooling channel is conducive to the miniaturization and integration of the system.

[0033] 4. Extended off-line cold preservation time: Efficient cold energy storage means that more cold energy can be stored, thereby extending the cold preservation time after the vehicle is turned off.

[0034] 5. Improved temperature uniformity inside the box: Combined with the optimized cold air inlet air duct, the temperature distribution inside the refrigerator can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0036] Figure 1 It is a schematic structural diagram of a new type of energy storage heat exchange system provided by an embodiment of the present invention.

[0037] Figure 2 It is a schematic cross-sectional view of a new type of energy storage heat exchange system provided by an embodiment of the present invention.

[0038] Figure 3 It is another schematic cross-sectional view of a new type of energy storage heat exchange system provided by an embodiment of the present invention.

[0039] Figure 4It is a schematic cross-sectional view of a novel energy storage heat exchange system including a second heat exchange structure provided by an embodiment of the present invention.

[0040] Figure 5 It is a schematic structural view of a novel composite heat exchange system including a secondary refrigeration part in an embodiment of the present invention.

[0041] Figure 6 It is a schematic three-dimensional sectional view of a novel composite heat exchange system including a secondary refrigeration part in an embodiment of the present invention.

[0042] Figure 7 It is a schematic structural view of a novel energy storage vehicle refrigerator provided by an embodiment of the present invention.

[0043] Figure 8 It is a schematic structural view of a novel composite heat exchange vehicle refrigerator provided by an embodiment of the present invention

[0044] Figure 9 It is a schematic three-dimensional partial sectional view of a novel composite heat exchange vehicle refrigerator provided by an embodiment of the present invention.

[0045] Figure 10 It is a schematic flow chart of a control method for a novel energy storage heat exchange system (without a secondary refrigeration part) provided by an embodiment of the present invention.

[0046] Figure 11 It is a schematic flow chart of a control method for a novel composite heat exchange system (with a secondary refrigeration part) provided by an embodiment of the present invention.

[0047] Wherein:

[0048] 10. Energy storage body; 11. Shell; 111. Internal accommodation space; 12. Cold storage medium;

[0049] 20. Air duct system; 21. Air inlet channel; 22. Air outlet channel; 23. Cooling channel;

[0050] 30. Heat exchange part; 31. First heat exchange structure; 311. First heat exchange fin; 312. Cold source channel;

[0051] 32. Second heat exchange structure; 321. Second heat exchange fin; 33. Temperature control valve;

[0052] 40. Air guiding part; 41. Fan;

[0053] 50. Secondary refrigeration part; 51. Semiconductor refrigeration element; 52. Heat dissipation structure; 521. Third heat exchange fin; 53. Cold dissipation structure; 531. Fourth heat exchange fin;

[0054] 100. Vehicle refrigerator; 110. Box body; 120. Storage space;

[0055] 130. Cold air intake duct

[0056] 140. Vehicle-mounted refrigeration system; 141. Refrigerant compressor; 142. Condenser; 143. Evaporator; 144. Expansion valve; 145. Electronic expansion valve; 146. Capillary tube; 147. Large-bore electronic expansion valve

[0057] TC. Actual temperature of the storage space; TS. Target set temperature; TX. Actual temperature of the energy storage body; TXb. Cold storage saturation temperature of the cold storage medium; TE. Ambient temperature; VH. High rotational speed of the compressor; VL. Low rotational speed of the compressor Specific embodiments

[0058] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention

[0059] In addition, the term "and / or" in the embodiments of the present invention is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after. Unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances

[0060] The present invention can solve at least some of the problems existing in the prior art cold storage system and vehicle-mounted refrigerator, such as high energy consumption, limited cold preservation time after the vehicle stops, insufficient refrigeration depth, and insufficiently refined control strategies. Specifically, the technical problems to be solved by the present invention include

[0061] 1. How to improve the efficiency of transferring the cold quantity of the cold source to the cold storage medium and the air inside the refrigerator

[0062] 2. How to effectively and continuously refrigerate using the stored cold quantity after the vehicle stops

[0063] 3. How to provide stronger refrigeration capacity when necessary to meet the needs of deep freezing, etc

[0064] 4. How to achieve intelligent and efficient control based on factors such as refrigerator temperature, cold storage state, environmental conditions, and vehicle operating state, and optimize energy utilization.

[0065] Embodiment 1: New energy storage heat exchange system

[0066] As Figure 1 and Figure 2 shown, this embodiment provides a new energy storage heat exchange system. The system mainly includes an energy storage body 10, an air duct system 20, a heat exchange part 30, and a wind guiding part 40.

[0067] The function of the energy storage body 10 is to absorb and store the cold quantity from the cold source. The energy storage body 10 has a housing 11, and the housing 11 defines an internal accommodation space 111.

[0068] The housing 11 of the energy storage body 10 can use high-density rigid polyurethane foam as the thermal insulation layer, which has a low thermal conductivity and good structural strength. Preferably, vacuum insulation panel (VIP) technology can be used to place the core material (such as glass fiber or fumed silica) in a high-barrier film and vacuum-packaged. Its thermal conductivity can reach 0.004 W / (m·K) or even lower, and its thermal insulation performance far exceeds that of traditional materials. It can greatly reduce the thickness of the thermal insulation layer under the same thermal insulation effect, thereby increasing the effective volume or reducing the overall size. The housing 11 needs to ensure good airtightness, especially for the case of filling liquid or semi-solid cold storage medium 12.

[0069] The selection of the cold storage medium 12 depends on the required refrigeration temperature range of the vehicle-mounted refrigerator. Generally, through the phase change process, the cold storage medium 12 can absorb or release a large amount of latent heat at a small temperature difference, thereby achieving efficient cold storage and release. Of course, a non-phase change cold storage liquid with a high specific heat capacity, such as an ethylene glycol aqueous solution, can also be used.

[0070] In some embodiments of the present invention, the cold storage medium 12 is a phase change material (PCM), such as an aqueous salt solution, ethylene glycol solution, paraffin, or other organic / inorganic phase change materials that can undergo solid-liquid phase change at different temperatures such as 0°C, -5°C, -10°C, -15°C, -20°C, etc. PCM can absorb or release a large amount of latent heat during the solid-liquid phase change process, has a high energy storage density, and helps to maintain a stable low temperature for a long time at a specific temperature point.

[0071] The air duct system 20 is used to guide air to flow through the energy storage body 10 for heat exchange. The air duct system 20 includes an air inlet channel 21, an air outlet channel 22, and a cooling channel 23. The air inlet channel 21 is provided with one or more air inlets for sucking air from the space to be cooled (such as the storage space of a vehicle-mounted refrigerator). The air outlet channel 22 is provided with one or more air outlets for sending the cooled air back to the space to be cooled. The cooling channel 23 is the key part for air to conduct heat exchange. It runs through the internal accommodation space 111 of the energy storage body 10 and forms a sealed structure with the energy storage body 10, specifically the housing 11 in some embodiments of the present invention, to prevent the cold storage medium 12 from leaking into the air flow path. The two ends of the cooling channel 23 are respectively communicated with the air inlet channel 21 and the air outlet channel 22, forming a complete air inlet and outlet path.

[0072] The cross-sectional shape (circular, rectangular, flat) and number of the cooling channels can be designed according to the required air volume and heat exchange area. Turbulence structures (such as corrugated walls, built-in small fins, etc.) can be arranged inside to enhance the turbulence on the air side and improve the heat transfer coefficient.

[0073] In some embodiments of the present invention, such as Figure 2 shown, the cooling channel 23 can be designed as a tubular air duct, and the outer walls of these air ducts are directly in contact with the cold storage medium 12 inside the energy storage body 10. The material of the air duct should have good thermal conductivity, such as aluminum or copper. When air flows inside the air duct, heat exchange is conducted with the external cold storage medium 12 through the air duct wall.

[0074] In some alternative embodiments of the present invention, the cooling channel 23 can be one or more independent air ducts, and these air ducts run through the cold storage medium 12. Air is forced to flow inside these air ducts, and heat exchange is conducted with the external low-temperature cold storage medium 12 through the wall of the air duct 23a.

[0075] As Figures 2 to 4 shown, the heat exchange part 30 is responsible for transferring the cold quantity of the cold source to the energy storage body 10 or directly to the air flowing through the cooling channel 23, or simultaneously transferring the cold quantity of the cold source to the energy storage body 10 and the air flowing through the cooling channel 23.

[0076] The heat exchange part 30 is connected to the refrigeration cycle of the cold source through a pipeline to receive the low-temperature and low-pressure cold source (such as R134a, R1234yf, etc.). The core of the heat exchange part 30 is the first heat exchange structure 31, which is arranged inside the energy storage body 10 and is directly in contact with the cold storage medium 12.

[0077] In some embodiments of the present invention, the heat exchange section 30 is an interface and channel that connects to a cold source and conducts cold energy into the energy storage body 10. It includes a connecting pipeline (not shown) and a first heat exchange structure 31 disposed in the internal accommodation space of the energy storage body 10 and in direct contact with the cold storage medium 12. One end of the connecting pipeline is connected to the low-pressure side of the cold source, and the other end is connected back to an appropriate position in the air conditioning system (for example, before the compressor suction port, passing through a gas-liquid separator as needed).

[0078] In some embodiments of the present invention, as Figure 3 shown, a specific form of the first heat exchange structure 31 is presented. The first heat exchange structure 31 may include at least one cold source channel 312 and at least one first heat exchange fin 311. The cold source channel 312 is used for the cold source from the cold source to flow through. At least a part of this channel is immersed in the cold storage medium 12. The first heat exchange fin 311 is connected to the cold source channel 312 and extends into the cold storage medium 12. Its function is to greatly increase the heat exchange area between the cold source and the cold storage medium 12 and improve the cold storage efficiency. In this embodiment, the first heat exchange fin 311 can be designed in a corrugated shape, fin shape or other complex shapes. More preferably, as Figure 3 shown, the first heat exchange fin 311 can be connected to the outer wall of the cooling channel 23 or the air duct of the cooling channel 23, while the cold source channel 312 can be arranged on the first heat exchange fin 311 or directly attached to the outer wall of the cooling channel 23. With this structure, when the cold source flows through the cold source channel 312, its cold energy can not only be efficiently transferred to the surrounding cold storage medium 12 for cold storage through the first heat exchange fin 311, but also, through contact with the outer wall of the cooling channel 23 (directly or indirectly through a second heat exchange fin), transfer a part of the cold energy directly to the air flowing through the inside of the cooling channel 23, realizing direct cooling of the air. This design combines the two methods of cold storage and direct cooling, improving the flexibility and response speed of the system.

[0079] The air guiding section 40 is used to generate an air flow and drive the air to complete the circulation in the air duct system 20. The air guiding section 40 is usually one or more fans 41. The fans 41 can be installed at different positions in the air duct system 20. For example, they can be installed at the air inlet to suck air into the system; or installed at the air outlet to blow out the cold air; or installed inside the cooling channel 23; or installed between the air inlet channel 21 and the cooling channel 23, or between the air outlet channel 22 and the cooling channel 23. The fans 41 of the air guiding section 40 should be vehicle-grade fans with low noise, long life and low power consumption, such as DC brushless fans. Their air volume and air pressure need to be matched according to the resistance characteristics of the cooling channel 23 and the required heat exchange amount. By adjusting the fan speed through methods such as PWM (pulse width modulation), more precise temperature control and energy saving can be achieved. The start-stop and speed of the fans 41 can be controlled by the control system described later.

[0080] The principle is described below in the mode of being installed on a vehicle, and the working principles of other usage scenarios are basically the same:

[0081] 1. Cold storage / direct refrigeration mode (air conditioner on): The vehicle air conditioning system operates, and the low-temperature cold source is introduced into the cold source channel 312 of the heat exchange part 30. The cold quantity of the cold source is transferred to the cold storage medium 12 through the first heat exchange fin 311 and the channel wall, causing it to cool down and solidify (phase change cold storage). At the same time, if the air guiding part 40 (fan 41) is turned on, air is driven to flow through the cooling channel 23. Since the first heat exchange structure 31 (especially when it is combined with the outer wall of the cooling channel 23) itself has a very low temperature, the air will directly exchange heat with it when flowing through and be cooled. In addition, the already partially cooled cold storage medium 12 also cools the air through the pipe wall of the cooling channel 23. The cooled air is sent out from the air outlet channel 22 to refrigerate the target space (such as the storage space of a refrigerator).

[0082] 2. Cold release mode (air conditioner off): The vehicle air conditioning system stops supplying the cold source to the heat exchange part 30. At this time, if the temperature of the target space is higher than the set value, the control system starts the air guiding part 40 (fan 41). Air is driven to flow through the cooling channel 23. Since the outer wall of the cooling channel 23 is in contact with the cold storage medium 12 that has stored cold quantity, the air exchanges heat with the cold storage medium 12 through the pipe wall of the cooling channel 23 and absorbs the cold quantity released by the cold storage medium 12 to be cooled. The cooled air is sent out from the air outlet channel 22 to maintain the low temperature of the target space. This process can continue until the cold quantity stored in the cold storage medium 12 is exhausted or the temperature rises to a certain extent.

[0083] Embodiment 2: A new type of energy storage heat exchange system with an internal heat exchange structure

[0084] This embodiment is an improvement based on Embodiment 1.

[0085] As Figure 4 shown, in order to further improve the direct cooling effect on air, especially when rapid cooling is required, a second heat exchange structure 32 can be added inside the cooling channel 23 (air duct). The second heat exchange structure 32 includes at least one second heat exchange fin 321, and these heat exchange fins are installed on the inner wall of the air duct and are in direct contact with the air flowing through the air duct, greatly increasing the contact area between the air and the cold source. The second heat exchange fin 321 can be in the form of fins, corrugated sheets, etc.

[0086] In some embodiments of the present invention, it is also possible to add the second heat exchange fin 321 as described above on the basis of the embodiments described in Figure 2 this.

[0087] Embodiment 3: A new type of energy storage heat exchange system with a temperature control valve

[0088] As Figure 1 and Figure 5 shown, based on Embodiment 1 or 2, in order to more precisely control the cold storage process and the cold source flow rate, a temperature control valve 33 is provided on the pipeline for introducing the cold source into the heat exchange section 30. The temperature control valve 33 can be a solenoid valve or an electronic expansion valve or other valves that can adjust the flow rate. This valve is connected to the control system described later. The control system can control the opening and closing or the opening degree of the temperature control valve 33 according to the temperature of the energy storage body 10 (measured, for example, by the second temperature sensor 132 installed on the energy storage body 10). For example, when the temperature of the energy storage body 10 is relatively high and cold storage is required, the valve is opened; when the temperature of the energy storage body 10 has reached the preset low temperature value (such as a certain temperature lower than the phase change point), indicating that the cold storage is sufficient, the valve can be closed or the opening degree can be reduced to stop or reduce the inflow of the cold source and avoid wasting cold energy or overcooling. At the same time, it is also possible to cooperate with the vehicle operating state (such as the load of the air conditioning system, the battery state, etc.) to jointly control this valve.

[0089] Embodiment 4: New Composite Heat Exchange System

[0090] As Figure 5 and Figure 6 shown, based on any one of Embodiments 1 to 3, a secondary refrigeration section 50 is added to meet lower refrigeration temperature requirements (such as -18°C freezing) or enhance the refrigeration capacity under certain working conditions.

[0091] The core of the secondary refrigeration section 50 is one or more thermoelectric cooling elements 51 (Peltier / TEC modules). After the thermoelectric cooling element 51 is energized, one side (the cold end) will absorb heat and refrigerate, and the other side (the hot end) will generate heat.

[0092] The cold end of the secondary refrigeration section 50 needs to be coupled with the object to be cooled. There are two main methods:

[0093] Method 1: The cold end is directly or through a heat conduction structure coupled to the energy storage body 10 to further cool the cold storage medium 12. This method can make the cold storage medium reach a lower temperature and store more cold energy, but the direct refrigeration effect on the air is relatively indirect.

[0094] Method 2 (such as Figure 5 and Figure 6As shown in the figure, the cold end is coupled to the air flow path of the air duct system 20. Specifically, a heat dissipation structure 53 can be provided in the air duct system 20 (for example, inside the cooling channel 23 or at the air outlet channel 22), and the heat dissipation structure 53 is connected to the cold end of the thermoelectric cooler 51. The heat dissipation structure 53 generally includes a plurality of fourth heat exchange fins 531 (such as finned radiators) for increasing the heat exchange area between the cold end and the flowing air. When the thermoelectric cooler 51 operates, the cold generated at the cold end is efficiently transferred to the air through the fourth heat exchange fins 531, achieving secondary deep cooling of the air flowing out of the cooling channel 23.

[0095] The heat generated at the hot end of the secondary refrigeration unit 50 must be effectively dissipated, otherwise it will affect the refrigeration effect of the cold end. For this purpose, a heat dissipation structure 52 is provided and connected to the hot end. To dissipate heat efficiently, the heat dissipation structure 52 can be immersed in the cold storage medium 12 of the energy storage body 10. The relatively large heat capacity of the cold storage medium 12 is used to absorb the heat generated at the hot end. This method has a compact structure and good heat dissipation effect when the temperature of the cold storage medium is relatively low. To further improve the heat dissipation efficiency, the heat dissipation structure 52 can include one or more third heat exchange fins 521 to increase the contact area between the hot end and the cold storage medium 12. Of course, the heat dissipation structure 52 can also dissipate heat in other ways, such as through an independent air-cooling or water-cooling system, but this will increase the complexity of the system. Discharging the heat into the cold storage medium 12 is a relatively simple solution that can utilize existing components.

[0096] The start and stop of the thermoelectric cooler 51 of the secondary refrigeration unit 50 are controlled by the control system described later according to requirements. For example, when the user sets a very low temperature (such as -18°C), or the main refrigeration system (air-conditioning cold source + cold storage) cannot meet the cooling requirement, the controller 133 can start the thermoelectric cooler 51.

[0097] In some embodiments of the present invention, by changing the direction of the current, the cold end and the hot end of the thermoelectric cooler 51 are changed. At this time, the energy storage body 10 can store heat, and the hot air circulating in the air duct system 20, thereby extending the heat preservation time.

[0098] Embodiment 5: New energy storage vehicle refrigerator

[0099] As Figure 7 shown, this embodiment provides a new energy storage vehicle refrigerator 100, which integrates the new energy storage heat exchange system described in any one of Embodiments 1 to 3.

[0100] The vehicle refrigerator 100 includes a box body 110, which has good heat insulation performance (such as using a foam insulation layer) and defines a storage space 120 for storing items such as food and beverages.

[0101] The new energy storage heat exchange system (existing in the form of including an energy storage body 10, an air duct system 20, a heat exchange part 30, a wind guiding part 40, and optionally including a temperature control valve 33) is installed on the box body 110. This can be to embed the entire system into the wall of the refrigerator box body as a module, or place some components (such as the energy storage body module) at specific positions or on other devices. The key is that both the air inlet and the air outlet of the air duct system 20 communicate with the storage space 120, so that the wind guiding part 40 can drive the air in the storage space 120 to flow through the cooling channel 23 for cooling circulation. In some alternative embodiments of the present invention, the new energy storage heat exchange system is placed in the foamed insulation layer of the refrigerator.

[0102] The new energy storage vehicle refrigerator 100 further includes a control system. The control system is responsible for monitoring the status and controlling the operation of the new energy storage heat exchange system. The control system at least includes:

[0103] The first temperature sensor: installed in the storage space 120 (such as on the inner tank wall or placed in the foamed layer near the inner tank) for detecting the actual temperature TC of the storage space 120.

[0104] The second temperature sensor: installed on or inside the energy storage body 10 for detecting the temperature TX of the energy storage body 10, reflecting the temperature and cold storage state of the cold storage medium 12.

[0105] The controller: usually a microcontroller (MCU) or a similar processor. It receives signals from the first temperature sensor and the second temperature sensor. The controller is also electrically connected to the wind guiding part 40 (fan 41) and can control the start / stop and / or rotation speed of the fan. The controller decides when to turn on or off the fan 41 and adjusts the rotation speed of the fan 41 according to the built-in control logic (see Embodiment 7) based on the detected temperatures TC, TX and the target temperature TS set by the user.

[0106] Optionally, the control system can further include an ambient temperature sensor for detecting the ambient temperature outside the refrigerator, and this information can be used to optimize the control strategy, especially when controlling the secondary refrigeration part 50 (see Embodiment 6).

[0107] If the new energy storage heat exchange system is equipped with a temperature control valve 33, the controller is also electrically connected to the temperature control valve 33 and controls the opening and closing or the opening degree of the valve of the temperature control valve 33 according to the detection result of TX and / or the vehicle operation state (such as whether it is necessary to preferentially meet the air conditioning or battery cooling), so as to intelligently manage the cold storage process.

[0108] In some embodiments of the present invention, the cold source comes from the vehicle-mounted refrigeration system 140. The low-pressure gaseous refrigerant flowing back is compressed by the compressor 141 to become a high-pressure gaseous refrigerant, and the high-pressure gaseous refrigerant flows into the condenser 142. In the condenser 142, the refrigerant exchanges heat with the outside air of the vehicle or the cooling system of the vehicle, releases heat, and condenses into a high-pressure liquid refrigerant. The high-pressure liquid refrigerant undergoes a sudden pressure drop through the temperature control valve 33 and becomes a low-temperature and low-pressure liquid-gas mixture. The low-temperature refrigerant enters the heat exchange section 30, transfers the cold quantity to the cold storage medium 12 or transfers it to the air in the cooling channel 23 through the second heat exchange fin 321, thereby evaporating into a low-pressure gas, and at the same time reducing the temperature of the cold storage medium 12 and / or the air in the cooling channel 23. Then the low-pressure gas flows back to the compressor to repeat the above process, continuously providing a cold source for the novel energy storage heat exchange system of the present invention.

[0109] In some embodiments of the present invention, the vehicle-mounted refrigeration system 140 further includes other circuits, such as the vehicle air-conditioning cooling circuit and the battery cooling circuit. Generally, a cooling circuit includes an evaporator 143; an expansion valve 144 is arranged at one end of the evaporator 143, and the other end of the evaporator 144 can adopt a solenoid valve expansion valve 145 or a capillary tube 146.

[0110] To improve the temperature uniformity in the storage space 120, especially for a vertical or larger vehicle-mounted refrigerator, a cold air inlet air duct 130 can be provided. This air duct draws the cooled air from the air outlet channel 22 of the air duct system 20 and guides it to the upper area of the storage space 120 for delivery. Since the cold air has a greater density, feeding it from the upper part helps to form a natural convection from top to bottom, making the temperature of the entire storage space 120 more uniform. To save the effective volume of the storage space 120, the cold air inlet air duct 130 can be at least partially arranged between the outer wall of the box body 110 and the thermal insulation layer, or closely attached to the outside of the inner liner of the storage space.

[0111] Embodiment 6: Novel composite heat exchange vehicle-mounted refrigerator

[0112] This embodiment provides a novel composite heat exchange vehicle-mounted refrigerator, which integrates the novel composite heat exchange system described in Embodiment 4.

[0113] As Figure 8 and Figure 9 shown, the cold source of the energy storage body 10 in this embodiment is the same as that in Embodiment 6, and the others are also roughly the same. The difference is that the low-pressure gaseous refrigerant flowing out of the evaporator 143 in the vehicle air-conditioning cooling circuit and the battery cooling circuit converges and then flows back to the compressor 141 through a large-diameter electronic expansion valve 147. Of course, the method in Embodiment 6 can also be adopted. In some alternative embodiments of the present invention, the arrangement method of this embodiment can also be adopted in Embodiment 5.

[0114] Similar to Embodiment 5, the novel composite heat exchange vehicle refrigerator provided in this embodiment also includes a control system. The control system in this embodiment is basically the same as that in Embodiment 5. The difference is that the controller in this embodiment is electrically connected to the semiconductor refrigeration element 51 and controls the start and stop of the semiconductor refrigeration element 51 according to the detection results of TC, TS, TX, or even TE. For example, when TS is set to -18°C, or when TC is much higher than TS and the main refrigeration system is insufficient, the semiconductor refrigeration element 51 is started.

[0115] In some embodiments of the present invention, a heating film is arranged inside the refrigerator for heating and insulating the refrigerator. At the same time, by changing the direction of the current, the cold end and the hot end of the semiconductor refrigeration element 51 are changed. At this time, the energy storage body 10 can store heat, and the hot air circulating in the air duct system 20, thereby extending the heat preservation time of the refrigerator.

[0116] Embodiment 7: Control Method without Semiconductor Refrigeration Module

[0117] This embodiment details the control method executed by the control system applied to the novel energy storage vehicle refrigerator 100 described in Embodiment 5. The core of this method is to use the controller to intelligently coordinate the working states of the components of the novel energy storage heat exchange system (such as the fan 41 of the air guiding part 40, the temperature control valve 33 of the heat exchange part 30, and the associated vehicle refrigeration system compressor) according to multiple parameters monitored in real time, so as to achieve efficient refrigeration, precise temperature control, and energy-saving operation.

[0118] Before elaborating the control logic, first clarify the key parameters and state definitions involved in this method:

[0119] User-set target temperature TS: The temperature that the user expects the storage space 120 to reach by setting through the vehicle refrigerator control panel or related interfaces.

[0120] Actual temperature TC of the storage space: The temperature value detected in real time by the first temperature sensor installed in the storage space 120.

[0121] Actual temperature TX of the energy storage body: The temperature value detected in real time by the second temperature sensor installed on or inside the energy storage body 10, reflecting the current temperature and cold storage state of the cold storage medium 12.

[0122] Cold storage saturation temperature TXb of the cold storage medium: The characteristic temperature point at which the cold storage medium 12 filled in the energy storage body 10 undergoes solid-liquid phase change (or specific energy absorption / release), which is a known design parameter determined according to the selected material.

[0123] Ambient temperature TE: As an optional setting in some embodiments of the present invention, it is the ambient temperature detected by an ambient temperature sensor installed outside the refrigerator.

[0124] Evaporator fan: It refers to the fan 41 in the air guiding part 40, which is responsible for driving the air to circulate between the storage space 120 and the cooling channel 23.

[0125] Electronic expansion valve / temperature control valve: It refers to the valve 33 (such as a small-diameter electronic expansion valve) in the heat exchange part 30 for controlling the inflow of the cold source. Its opening indicates that the cold source is allowed to flow in, and its closing indicates that the cold source is blocked from flowing in.

[0126] Compressor: It refers to the compressor 141 of the vehicle-mounted refrigeration system 140. This control system indirectly controls the start / stop and operating speed of the compressor by sending a request signal to the relevant control units of the vehicle (such as the body control module BCM or the air conditioner controller).

[0127] Vehicle working mode 1 (Mode 1): It indicates that in the current state of the vehicle, the evaporator of the vehicle-mounted refrigeration system is working (for example, cooling the passenger compartment) or the battery cooling system is working. In this mode, the compressor has an operating demand and is usually allowed to operate at a relatively high speed VH to provide sufficient cooling capacity.

[0128] Vehicle working mode 2 (Mode): It indicates that in the current state of the vehicle, neither the vehicle-mounted air conditioner evaporator nor the battery cooling system is working (for example, the vehicle is only in the accessory power mode, the vehicle is turned off but the refrigerator remains running, or the air conditioner / battery cooling demand has been met). In this mode, if only the compressor is running for the refrigerator, it usually requests to run at a relatively low speed VL to save energy, or requests to stop under specific conditions.

[0129] Control period t: It is the time interval for the controller to execute a complete state detection and decision-making logic, for example, set to 30 seconds. Of course, t can adopt calibrated or empirical values.

[0130] Fan start delay t2: It is the time to delay the start of the fan 41 for a period of time after stopping the cold source supply under specific conditions (such as when both the refrigerator and the cold storage body reach the low-temperature target), for example, set to 60 seconds.

[0131] As Figure 10 shown, the control logic of the system without the secondary refrigeration part (thermoelectric refrigeration module) will be described below.

[0132] This control logic is applicable to a new energy storage heat exchange system that only includes the main refrigeration part (using the air conditioner cold source and the cold storage medium).

[0133] 1. System startup and initialization:

[0134] When the new energy storage vehicle refrigerator 100 is powered on and started, the controller first executes an internal self-check program. After the self-check passes, the system enters the initialization state: the controller ensures that the temperature control valve 33 is in the closed state to prevent the cold source from entering the heat exchange part 30; at the same time, the controller ensures that the fan 41 of the air guiding part 40 is in the stopped state.

[0135] 2. Periodic status monitoring and decision-making:

[0136] After the initialization is completed, the controller enters the main control loop. It will perform the following operations once every preset control cycle t (for example, every 30 seconds):

[0137] Read the value of the first temperature sensor to obtain the actual temperature TC of the current storage space.

[0138] Read the value of the second temperature sensor to obtain the actual temperature TX of the current energy storage body.

[0139] If it needs to cooperate with the compressor, query the vehicle status to determine whether it is in working mode 1 or working mode 2.

[0140] Based on the read temperature value, the user-set target temperature TS, and the known cold storage saturation temperature TXb of the cold storage medium, make a decision and judgment.

[0141] 3. Refrigeration demand judgment and execution:

[0142] The controller first judges whether the storage space 120 needs refrigeration. The judgment condition is: TC > the first temperature threshold. Generally, the first temperature threshold is TS + ΔT1. For example, TC > TS + 2°C; ΔT1 can be calibrated or an empirical value can be used.

[0143] If this condition is met, it indicates that the refrigerator needs to be cooled urgently. The controller will perform the following actions:

[0144] Command the temperature control valve 33 to open, allowing the cold source of the cold source to flow into the heat exchange part 30.

[0145] Command the fan 41 to start, forcing air to flow through the cooling channel 23 for cooling and sending the cold air into the storage space 120.

[0146] Send a compressor start request signal to the vehicle control unit.

[0147] According to the current vehicle working mode, further send a compressor speed request: if in mode 1, request the compressor to run at a high speed VH; if in mode 2, request the compressor to run at a low speed VL.

[0148] After performing the above actions, the process returns to step 2 (periodic status monitoring) and waits for the next control cycle.

[0149] 4. Judgment and execution for reaching the temperature standard but still needing to continue cold storage:

[0150] If in step 3, TC ≤ the first temperature threshold, for example, TC ≤ TS + 2°C, the controller enters the next judgment branch. The judgment conditions are: TC < the second temperature threshold, generally the second temperature threshold is TS - ΔT2, for example, TC < TS - 2°C and TX > the third temperature threshold, generally the third temperature threshold is TXb + ΔT3, for example, TX > TXb + 2°C. ΔT2 and ΔT3 can be calibrated or use empirical values.

[0151] This condition indicates that the temperature of the storage space is low enough, but the cold storage medium has not fully stored cold energy. To prioritize the cold storage task and avoid overcooling of the storage space, the controller performs the following actions:

[0152] Command the fan 41 to stop, preventing cold air from continuing to blow into the storage space.

[0153] Keep the temperature control valve 33 in the open state (or send a signal to ensure it remains open), allowing the cold source to continue flowing through the heat exchange part 30 to cool and store energy in the cold storage medium 12. At this time, the compressor (if it has been running) continues to work.

[0154] After performing the above actions, the process returns to step 2 (periodic status monitoring).

[0155] 5. Judgment and execution for both temperature and cold storage reaching the standard:

[0156] If the conditions are not met in step 4, the controller enters the final main judgment branch. The judgment conditions are: TC < the second temperature threshold, for example, TC < TS - 2°C and TX < the fourth temperature threshold, generally the fourth temperature threshold is TXb – ΔT4, for example, TX < TXb - 2°C. ΔT4 can be calibrated or use empirical values.

[0157] This condition indicates that both the refrigeration and cold storage goals have been achieved. The controller performs the following actions:

[0158] Command the temperature control valve 33 to close, stopping the cold source supply.

[0159] Wait for a preset delay time t2 (for example, 60 seconds). This delay may be used for system pressure balance, reducing frequent component switching, or providing time for potential micro defrosting.

[0160] After the delay ends, command the fan 41 to start. At this time, the purpose of the fan running is to release the cold stored in the energy storage body 10 to maintain the low temperature of the storage space, or simply to circulate the air to equalize the temperature.

[0161] In some embodiments of the present invention, optionally, compressor coordination: Check the vehicle operating mode: If the current mode is Mode 2, the controller sends a compressor shutdown request signal to the vehicle control unit to save energy. If it is in Mode 1, no shutdown signal is sent because the compressor may be serving other systems.

[0162] After performing the above actions, the process returns to Step 2 (periodic status monitoring).

[0163] Other cases:

[0164] If the main determination conditions in the above Steps 3, 4, and 5 are not met (for example, TC fluctuates within the range of TS ± 2°C, or TX is within the range of TXb ± 2°C), the controller does not perform special active control actions and only maintains the current state (for example, if the fan is running, it continues to run, and if the valve is closed, it remains closed), and then directly returns to Step 2 to wait for the status monitoring and decision-making in the next cycle.

[0165] Embodiment 8: Control method for a thermoelectric cooling module

[0166] As Figure 11 shown, this embodiment details the control method executed by the control system of the new composite heat exchange vehicle refrigerator described in Embodiment 6. The core of this method lies in using the controller to intelligently coordinate the working states of the components of the new composite heat exchange system (such as the fan 41 of the air guiding part 40, the temperature control valve 33 of the heat exchange part 30, the thermoelectric cooling element 51 of the secondary refrigeration part 50, and the vehicle refrigeration system compressor associated therewith) according to multiple parameters monitored in real time, so as to achieve efficient refrigeration, precise temperature control, and energy-saving operation.

[0167] The key parameters and state definitions involved in the method of this embodiment are increased compared with Embodiment 7:

[0168] Thermoelectric cooling module (TEC): Refers to the thermoelectric cooling element 51 in the secondary refrigeration part 50.

[0169] This control logic is applicable to the new composite heat exchange system that simultaneously includes the main refrigeration part and the secondary refrigeration part (TEC). Based on the logic of Embodiment 7, it adds the control of the thermoelectric cooling element 51.

[0170] 1. System startup and initialization:

[0171] Similar to the logic of Embodiment 7, but during initialization, in addition to closing the valve 33 and the fan 41, the controller also ensures that the thermoelectric cooling element 51 is in a powered-off (closed) state.

[0172] 2. Periodic status monitoring and decision-making:

[0173] Logically similar to Embodiment 7, but when reading sensor data, if an ambient temperature sensor is equipped, the value TE of the ambient temperature sensor will also be read.

[0174] 3. Refrigeration demand judgment and execution:

[0175] The judgment condition is the same as that of Logic 1: TC > the first temperature threshold. Generally, the first temperature threshold is TS + ΔT1. For example, TC > TS + 2°C; ΔT1 can be calibrated or an empirical value can be used.

[0176] If this condition is met, it indicates that strong refrigeration is required. The controller performs the following actions:

[0177] Command the temperature control valve 33 to open.

[0178] Command the fan 41 to start.

[0179] Command the thermoelectric cooler 51 to start working to provide additional secondary cooling capacity.

[0180] Send a compressor start and speed request signal (judging VH / VL based on Mode 1 / Mode 2), the same as the logic of Embodiment 7.

[0181] The process returns to Step 2.

[0182] 4. Judgment and execution for the need to continue cold storage when the temperature reaches the standard:

[0183] The judgment conditions are the same as the logic of Embodiment 7: TC < the second temperature threshold. Generally, the second temperature threshold is TS - ΔT2. For example, TC < TS - 2°C and TX > the third temperature threshold. Generally, the third temperature threshold is TXb + ΔT3. For example, TX > TXb + 2°C. ΔT2 and ΔT3 can be calibrated or empirical values can be used.

[0184] The temperature of the storage space has reached the standard, and cold storage needs to be prioritized. The controller performs the following actions:

[0185] Command the fan 41 to stop.

[0186] Command the thermoelectric cooler 51 to stop working because secondary refrigeration is not required at this time.

[0187] Keep the temperature control valve 33 in the open state and continue cold storage.

[0188] The process returns to Step 2.

[0189] 5. Judgment and execution for both the temperature and cold storage reaching the standard:

[0190] The determination conditions are the same as the logic in Embodiment 7: TC < the second temperature threshold. For example, TC < TS - 2°C and TX < the fourth temperature threshold. Generally, the fourth temperature threshold is TXb - ΔT3. For example, TX < TXb - 2°C. ΔT4 can be calibrated or an empirical value can be used.

[0191] Both refrigeration and cold storage are sufficient. The controller executes the following action sequence:

[0192] Command the temperature control valve 33 to close to stop the cold source supply of the main refrigeration unit.

[0193] Check the ambient temperature TE. If TE > the preset ambient temperature, for example, 38°C (i.e., the ambient temperature is very high), then command the thermoelectric cooler 51 to start working. This is to use the TEC to help maintain the low temperature and resist external heat penetration in an extremely high temperature environment. Otherwise (i.e., TE ≤ the preset ambient temperature, for example, 38°C), then command the thermoelectric cooler 51 to stop working (or remain in the stopped state).

[0194] Wait for the preset delay time t2, for example, 60 seconds. Of course, t2 can be calibrated or an empirical value can be used.

[0195] After the delay ends, command the fan 41 to start (using the cold energy generated by cold storage or TEC to maintain the low temperature).

[0196] In some embodiments of the present invention, compressor cooperation is optional: Check the vehicle working mode: If it is in Mode 2, send a compressor shutdown request signal.

[0197] The process returns to Step 2.

[0198] 6. Other situations:

[0199] Following the same logic as in Embodiment 7, if the specific conditions in Steps 3, 4, and 5 are not met, maintain the current state and return to Step 2 to wait for the next monitoring.

[0200] Through the above detailed control logic, the control system of the present invention can intelligently and flexibly schedule the operation of the main refrigeration system (air-conditioning refrigerant + cold storage) and the secondary refrigeration system (TEC) according to the real-time changing internal temperature, cold storage state, environmental conditions, and vehicle state, as well as coordinate the interaction with the vehicle compressor, so as to achieve the optimal utilization of energy while ensuring the refrigeration effect and meet the user's requirements for precise temperature control and long-term cold preservation. This method has a higher level of intelligence and energy efficiency performance compared to simple on-off control.

[0201] Embodiment 9: Electronic device

[0202] The present invention also provides an electronic device, such as a controller integrated inside a vehicle refrigerator. The electronic device includes a processor (such as an MCU) and a memory (such as Flash, RAM). A computer program (firmware) is stored in the memory. When the processor executes the computer program, any one of the control methods described in Embodiment 7 or 8 above can be implemented. For example, the processor receives signals from various sensors, makes judgments according to the logic set in the program (such as Figure 10 or Figure 11 the process shown), and outputs control signals to the fan 41, the temperature control valve 33, the optional semiconductor refrigeration component 51, and the compressor control unit of the vehicle.

[0203] The processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0204] The memory may include a random access memory (RAM), or may also include a non-volatile memory (NVM), such as at least one disk memory.

[0205] The memory may be a volatile memory, such as a random-access memory (RAM); the memory may also be a non-volatile memory, such as a read-only memory, a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD), or the memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may be a combination of the above memories.

[0206] Embodiment 10: Storage Medium

[0207] The present invention provides a computer-readable storage medium, such as a non-volatile memory chip (Flash Memory), an SD card, a USB flash drive, etc. A computer program is stored in the computer-readable storage medium. When the program is loaded and executed by a corresponding processor (such as the controller of a vehicle refrigerator or a general computer), any one of the control methods described in Embodiment 7 or 8 above can be implemented. Such a storage medium can be used to manufacture or update the control software of a vehicle refrigerator.

[0208] The present invention can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer can be a general computer, a special computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, a computer, a server, or a data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access, or a data storage device such as a server or a data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid-state disk (SSD)).

[0209] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0210] 1. Efficient heat exchange and cold storage: Through a carefully designed cooling channel, a first heat exchange structure (including heat exchange fins and a cold source channel), and an optional second heat exchange structure, efficient transfer of the cold quantity of the cold source to the cold storage medium and air is achieved, improving the cold storage speed and refrigeration efficiency.

[0211] 2. Extended off-line cold preservation time: Utilizing the cold quantity stored in the cold storage medium, after the vehicle engine is turned off or the air conditioner is turned off, air can still be driven by the air guiding part to flow through the cooling channel for refrigeration, significantly extending the effective cold preservation time of the vehicle refrigerator.

[0212] 3. Enhanced refrigeration capacity: The optional secondary refrigeration unit (thermoelectric cooler) can provide additional cooling capacity when needed, achieving a lower refrigeration temperature (such as -18°C freezing) to meet the diverse needs of users.

[0213] 4. Intelligent control and energy conservation: By integrating temperature sensors and controllers and adopting refined control logic, it can intelligently control the working states of the fan, temperature control valve, secondary refrigeration component, and compressor based on various factors such as the refrigerator temperature, cold storage state, set temperature, vehicle operation mode, and even ambient temperature, realizing on-demand refrigeration and cold storage, optimizing energy utilization, and achieving the purpose of energy conservation.

[0214] 5. High system integration: The cold storage, heat exchange, air duct, etc. are integrated into a compact module, facilitating installation and layout in vehicles, on-board refrigerators, or other devices.

[0215] 6. Improvement of temperature uniformity inside the box: The optional cold air inlet duct design helps optimize the distribution of cold air inside the refrigerator and improve temperature uniformity.

[0216] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. For example, the shape of the energy storage body, the number and arrangement form of the cooling channels, the specific structure of the heat exchange fins, the type and installation position of the sensors, the specific thresholds and time parameters in the control logic, etc. can all be adjusted and optimized under the basic principle of the present invention.

Claims

1. A novel energy storage heat exchange system, characterized in that, Comprising: A heat storage body for absorbing and storing the cold quantity transferred from a cold source; The heat storage body includes a housing having an internal accommodation space and a cold storage medium filled in the internal accommodation space; An air duct system, comprising: an air inlet passage having at least one air inlet for air to enter; an air outlet passage having at least one air outlet for air to discharge; a cooling passage penetrating through the internal accommodation space of the heat storage body and sealed with the heat storage body, and both ends of the cooling passage are respectively communicated with the air inlet passage and the air outlet passage; A heat exchange part communicated with the cold source; the heat exchange part includes a first heat exchange structure in contact with the cold storage medium; An air guiding part for driving air to flow through the air inlet passage, the cooling passage and the air outlet passage in sequence; Wherein, when the cold source is introduced into the first heat exchange structure, the first heat exchange structure is adapted to cool the cold storage medium to store cold quantity, and / or directly cool the air flowing through the cooling passage; and, the air flowing through the cooling passage is adapted to exchange heat with the cold storage medium and / or the first heat exchange structure to be cooled, and the cooled air is sent out from the air outlet passage.

2. The novel energy storage heat exchange system according to claim 1, wherein: The cooling passage includes at least one air duct; the outer wall of the air duct is in direct contact with the cold storage medium and / or the first heat exchange structure.

3. The novel energy storage heat exchange system according to claim 1 or 2, characterized in that: The first heat exchange structure includes at least one first heat exchange fin for increasing the heat exchange area between the cold source and the cold storage medium, and at least one cold source passage for the cold source to flow through; the cold source passage is at least partially immersed in the cold storage medium.

4. The novel energy storage heat exchange system according to claim 3, wherein: The first heat exchange fin is connected to the outer wall of the cooling passage.

5. The novel energy storage heat exchange system according to claim 4, wherein: The cold source passage is connected to the outer wall of the first heat exchange fin and / or the cooling passage.

6. The novel energy storage heat exchange system according to claim 1 or 2 or 4 or 5, characterized in that: The cooling passage includes at least one air duct; the heat exchange part further has a second heat exchange structure located inside the air duct, and the second heat exchange structure includes at least one second heat exchange fin for increasing the heat exchange area between the air flowing through the air duct and the cold source.

7. The novel energy storage heat exchange system according to claim 6, wherein: The second heat exchange fin is connected to the inner wall of the air duct.

8. The novel energy storage heat exchange system according to any one of claims 1, 2, 4, 5, or 7, characterized in that: The heat exchange part further includes a temperature control valve, and the temperature control valve is arranged on the pipeline for introducing the cold source into the heat exchange part, and is used for adjusting the cold source flow rate flowing into the heat exchange part according to the temperature of the heat storage body.

9. The novel energy storage heat exchange system according to claim 1 or 2 or 4 or 5 or 7, characterized in that: The air guiding part includes a fan; at least one of the positions between the air inlet passage and the cooling passage, between the air outlet passage and the cooling passage, at the air inlet, at the air outlet, and inside the cooling passage is provided with a fan.

10. A control method for a new energy storage heat exchange system, characterized in that, The energy storage heat exchange system includes a heat storage body, a heat exchange part communicated with a cold source, and an air guiding part for driving air to flow through the heat storage body for heat exchange; the heat storage body includes a housing having an internal accommodation space and a cold storage medium filled in the internal accommodation space; the control method includes the following steps: Obtain the actual temperature TC in the storage space served by the energy storage heat exchange system and the target temperature TS set by the user; Obtain the actual temperature TX of the heat storage body and the cold storage saturation temperature TXb of the cold storage medium; Controlling the operating state of the air guiding part and the interaction state between the heat exchange part and the cold source according to the comparison result between the actual temperature TC and the target temperature TS, and the comparison result between the actual temperature TX and the cold storage saturation temperature TXb.

11. The control method according to claim 10, characterized in that, The steps of controlling the operating state of the air guiding part and the interaction state between the heat exchange part and the cold source include: When it is detected that the actual temperature TC is greater than a first temperature threshold determined based on the target temperature TS, turning on the air guiding part and causing the heat exchange part to receive cold from the cold source.

12. The control method according to claim 11, wherein The steps of controlling the operating state of the air guiding part and the interaction state between the heat exchange part and the cold source further include: When it is detected that the actual temperature TC is less than a second temperature threshold determined based on the target temperature TS and the actual temperature TX is greater than a third temperature threshold determined based on the cold storage saturation temperature TXb, turning off the air guiding part and maintaining the state where the heat exchange part receives cold from the cold source to prioritize cold storage.

13. The control method according to claim 12, characterized in that, The steps of controlling the operating state of the air guiding part and the interaction state between the heat exchange part and the cold source further include: When it is detected that the actual temperature TC is less than the second temperature threshold and the actual temperature TX is less than a fourth temperature threshold determined based on the cold storage saturation temperature TXb, stopping the heat exchange part from receiving cold from the cold source and turning on the air guiding part after a preset delay time.

Images