Energy efficient hybrid refrigeration system, refrigeration method and cold chain vehicle

Abstract

The present application belongs to the field of refrigeration technology, and particularly relates to energy-saving refrigeration, and especially relates to an energy-saving hybrid refrigeration system, a refrigeration method and a cold chain vehicle, wherein the energy-saving hybrid refrigeration system comprises a control module, and an electric refrigeration device and a mechanical refrigeration device electrically connected with the control module; the control module is configured to obtain initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device respectively according to preset parameters, then initialize the electric refrigeration device and the mechanical refrigeration device respectively according to the corresponding initialization time, and after initialization, control the electric refrigeration device and / or the mechanical refrigeration device to refrigerate in the container of the cold chain vehicle according to a refrigeration mode, thereby ensuring that the mechanical refrigeration device and the electric refrigeration device are completely initialized, and avoiding mechanical failure, scroll compressor abnormality and other failures caused by incomplete initialization of the two devices when they are connected to the refrigeration system.

Description

Technical Field

[0001] This invention belongs to the field of refrigeration technology, specifically relating to energy-saving refrigeration, and more particularly to an energy-saving hybrid refrigeration system, refrigeration method, and refrigerated truck. Background Technology

[0002] The cargo box of a refrigerated truck needs to be refrigerated. When an electric compressor and a mechanical compressor are coupled in a single refrigeration system, their initialization times differ due to the different designs of the mechanical compressor (reciprocating compressor) and the electric compressor (scroll compressor). Figure 4 As shown, connecting the compressor to the refrigeration system before it is fully initialized can lead to mechanical failures, scroll compressor malfunctions, and other problems.

[0003] Therefore, to address the technical problem of mechanical failures and scroll compressor malfunctions caused by connecting mechanical and electric compressors to the refrigeration system before they are fully initialized, it is necessary to design an energy-saving hybrid refrigeration system, refrigeration method, and cold chain vehicle.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0005] This disclosure provides at least one energy-saving hybrid refrigeration system, refrigeration method, and refrigerated truck.

[0006] In a first aspect, embodiments of this disclosure provide an energy-saving hybrid refrigeration system, comprising:

[0007] A control module, and an electric refrigeration device and a mechanical refrigeration device electrically connected to the control module;

[0008] The control module is configured to obtain the initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters, then initialize the electric refrigeration device and the mechanical refrigeration device according to the corresponding initialization time, and after initialization, control the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box of the refrigerated truck according to the refrigeration mode.

[0009] In one optional implementation, the method by which the control module is configured to obtain the initialization times corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters includes:

[0010] The electric refrigeration device includes an electric compressor;

[0011] The mechanical refrigeration device includes a mechanical compressor;

[0012] The preset parameters include: standard initialization time, temperature influence coefficient, electric compressor and mechanical compressor type coefficient, and lubricating oil coefficient at preset standard temperatures for electric and mechanical compressors;

[0013] The real-time initialization times for the electric compressor in an electric refrigeration system and the mechanical compressor in a mechanical refrigeration system are as follows:

[0014] T1 = T0 * K1 * (1 + α * ΔT) * K3;

[0015] T2 = T * K2 * (1 + α * ΔT) * K3;

[0016] Where T1 is the real-time initialization time for the electric compressor; T2 is the real-time initialization time for the mechanical compressor; T0 is the standard initialization time for the electric compressor at a preset standard temperature; T is the standard initialization time for the mechanical compressor at a preset standard temperature; K1 is the electric compressor type coefficient, which is 1 / 2 when the cumulative working time of the electric compressor is greater than the first preset time but less than the second preset time. K2, when the cumulative working time of the electric compressor is greater than the second preset time, K1=K2; K2 is the mechanical compressor type coefficient; α is the temperature influence coefficient; ΔT is the difference between the current temperature and the preset standard temperature; K3 is the lubricating oil coefficient.

[0017] In one optional implementation, the control module is configured to initialize the electric compressor according to the real-time initialization time corresponding to the electric compressor, and, according to the real-time initialization time corresponding to the mechanical compressor, after both the electric compressor and the mechanical compressor have completed initialization, control the electric compressor and / or the mechanical compressor to refrigerate the cargo box of the refrigerated truck according to the refrigeration mode.

[0018] In an optional implementation, the control module is further configured to stop the electric compressor in fuel mode, control the engine to drive the mechanical compressor to cool the cargo compartment of the refrigerated truck, and after the temperature detected by the temperature sensor in the compartment drops to a preset temperature, the mechanical compressor enters a low-power state.

[0019] In an optional implementation, the control module is further configured to stop the mechanical compressor in pure electric mode, control the electric compressor to work to cool the cargo compartment of the refrigerated truck, and after the temperature detected by the temperature sensor in the compartment drops to a preset temperature, the electric compressor enters a low-power state.

[0020] In an optional implementation, the control module is further configured to, in hybrid mode, stop the mechanical compressor when the refrigerated truck stops, control the electric compressor to work to cool the cargo compartment of the refrigerated truck, and after the temperature detected by the temperature sensor in the compartment drops to a preset temperature, control the engine to work and drive the mechanical compressor to work, with the mechanical compressor and electric compressor working synchronously. At this time, the power battery charge supplying power to the electric compressor is detected in real time, and the power ratio of the electric compressor and the mechanical compressor is adjusted according to the power charge status.

[0021] In one alternative embodiment, the electric refrigeration device includes: a power battery and an electric compressor electrically connected to the control module;

[0022] The power battery is electrically connected to the electric compressor;

[0023] The control module is configured to control the power battery to supply power to the electric compressor and to control the operation of the electric compressor;

[0024] The electric compressor is connected to a condenser, the condenser is connected to an evaporator, and the evaporator is installed inside the cargo box of the refrigerated truck.

[0025] The cargo box is equipped with a temperature sensor electrically connected to the control module. The control module is also configured to control the electric compressor to enter a low-power state based on the temperature inside the cargo box detected by the temperature sensor.

[0026] In one optional embodiment, the mechanical refrigeration device includes: a mechanical compressor;

[0027] The mechanical compressor is connected to the engine, and the engine is electrically connected to the control module. The control module controls the engine to start and drive the mechanical compressor to work.

[0028] The mechanical compressor is connected to the condenser.

[0029] Secondly, this disclosure also provides a refrigeration method using the above-mentioned energy-saving hybrid refrigeration system, comprising:

[0030] The control module obtains the initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device according to the preset parameters, and then initializes the electric refrigeration device and the mechanical refrigeration device respectively according to the corresponding initialization time. After initialization, the control module controls the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box of the cold chain vehicle according to the refrigeration mode.

[0031] Thirdly, embodiments of this disclosure also provide a cold chain vehicle, comprising:

[0032] The above-mentioned energy-saving hybrid refrigeration system.

[0033] The beneficial effects of this invention are as follows: This energy-saving hybrid refrigeration system includes a control module, and an electric refrigeration device and a mechanical refrigeration device electrically connected to the control module. The control module is configured to obtain the initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters, and then initialize the electric refrigeration device and the mechanical refrigeration device according to the corresponding initialization time. After initialization, the control module controls the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box of the refrigerated truck according to the refrigeration mode. This ensures that both the mechanical refrigeration device and the electric refrigeration device are fully initialized, avoiding mechanical failures, scroll compressor malfunctions, and other faults caused by incomplete initialization when they are connected to the refrigeration system.

[0034] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 A schematic diagram of an energy-saving hybrid refrigeration system provided in this disclosure embodiment;

[0038] Figure 2 A flowchart of a cooling mode provided in an embodiment of this disclosure;

[0039] Figure 3 This is a connection diagram of an energy-saving hybrid refrigeration system provided in an embodiment of the present disclosure;

[0040] Figure 4 This is a schematic diagram illustrating the effects of a compressor not being initialized.

[0041] In the picture:

[0042] 1. Engine; 2. Mechanical compressor; 3. First check valve; 4. Power battery; 5. Electric compressor; 6. Second check valve; 7. Condenser; 8. Evaporator; 9. Cargo box; 10. Control module; 11. Temperature sensor. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0045] The cargo box of a refrigerated truck needs to be refrigerated. When an electric compressor and a mechanical compressor are coupled in a single refrigeration system, their initialization times differ due to the different designs of the mechanical compressor (reciprocating compressor) and the electric compressor (scroll compressor). Figure 4 As shown, connecting the compressor to the refrigeration system before it is fully initialized can lead to mechanical failures, scroll compressor malfunctions, and other problems.

[0046] The initialization of a mechanical compressor is as follows: before the refrigerant is fully connected, the oil temperature of the piston compressor is normal. If the initialization is not complete, the piston lubrication will be abnormal. If the load is applied rashly, the mechanical system will jam. Continuing to work will damage the mechanical compressor and cause mechanical failures.

[0047] The initialization of an electric compressor involves ensuring that the electric drive module, such as the motor, has a stable power before the refrigerant is fully connected. If a load is applied prematurely before initialization is complete, the motor will not be able to handle the centrifugal force after the load is applied, and the scroll module will collide and damage the scroll under the action of centrifugal force, resulting in a scroll compressor malfunction.

[0048] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0050] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0051] like Figure 1 As shown, at least one disclosed embodiment provides an energy-saving hybrid refrigeration system, including: a control module 10, and an electric refrigeration device and a mechanical refrigeration device electrically connected to the control module 10; the control module 10 is configured to obtain the initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters, then initialize the electric refrigeration device and the mechanical refrigeration device respectively according to the corresponding initialization time, and after initialization, control the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box 9 of the refrigerated truck according to the refrigeration mode, thereby ensuring that both the mechanical refrigeration device and the electric refrigeration device are fully initialized, avoiding mechanical failures, scroll compressor malfunctions and other failures caused by connecting them to the refrigeration system due to incomplete initialization.

[0052] In this embodiment, by using electric and mechanical refrigeration devices under different refrigeration modes, fuel consumption is reduced, achieving energy conservation and emission reduction.

[0053] In one optional embodiment, the method by which the control module 10 is configured to obtain the initialization times corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters includes: the electric refrigeration device includes an electric compressor 5; the mechanical refrigeration device includes a mechanical compressor 2; the preset parameters include: the standard initialization time of the electric compressor 5 and the mechanical compressor 2 at a preset standard temperature, the temperature influence coefficient, the type coefficient of the electric compressor 5 and the mechanical compressor 2, and the lubricating oil coefficient;

[0054] The real-time initialization times for electric compressor 5 in the electric refrigeration unit and mechanical compressor 2 in the mechanical refrigeration unit are as follows:

[0055] T1 = T0 * K1 * (1 + α * ΔT) * K3;

[0056] T2 = T * K2 * (1 + α * ΔT) * K3;

[0057] Where T1 is the real-time initialization time corresponding to electric compressor 5; T2 is the real-time initialization time corresponding to mechanical compressor 2; T0 is the standard initialization time of electric compressor 5 at a preset standard temperature; T is the standard initialization time of mechanical compressor 2 at a preset standard temperature; K1 is the type coefficient of electric compressor 5, and when the cumulative working time of electric compressor 5 is greater than the first preset time but less than the second preset time, K1=1 / 2 K2, when the cumulative working time of electric compressor 5 is greater than the second preset time, K1=K2; K2 is the type coefficient of mechanical compressor 2; α is the temperature influence coefficient; ΔT is the difference between the current temperature and the preset standard temperature; K3 is the lubricating oil coefficient.

[0058] In this embodiment, the preset standard temperature can be 20 degrees Celsius.

[0059] In this embodiment, the value of the temperature influence coefficient α can be adjusted according to the ambient temperature. For example, in winter (temperature ≤ 10∘C): α = −0.03 (low temperature increases viscosity and prolongs start-up time); in summer (temperature > 10∘C): α = 0.01 (high temperature decreases viscosity and shortens start-up time).

[0060] In this embodiment, the type coefficient K1 of the electric compressor 5 is 0.5; the type coefficient K2 of the mechanical compressor 2 is 1.2. The first preset time can be 1000 hours of cumulative operation of the mechanical compressor 2, and the second preset time can be 2000 hours of cumulative operation of the mechanical compressor 2. Since the electric compressor 5 and the mechanical compressor 2 are installed on the refrigerated truck, the vibration of the mechanical compressor 2 will be transmitted to the electric compressor 5. Therefore, as the cumulative operating time of the mechanical compressor 2 increases, the vibration will affect the components of the electric compressor 5. It is necessary to correlate the type coefficient of the electric compressor 5 with the type coefficient of the mechanical compressor 2.

[0061] In this embodiment, the lubricating oil coefficient is set according to the time accumulation and temperature reference parameter table. The lubricating oil coefficient is smaller for new engine oil (usage time ≤ 1000 hours) and larger for old engine oil (usage time > 1000 hours).

[0062] In one optional implementation, the control module 10 is configured to initialize the electric compressor 5 according to the real-time initialization time corresponding to the electric compressor 5, and, according to the real-time initialization time corresponding to the mechanical compressor 2, after both the electric compressor 5 and the mechanical compressor 2 have completed initialization, control the electric compressor 5 and / or the mechanical compressor 2 to refrigerate the cargo box 9 of the refrigerated truck according to the refrigeration mode.

[0063] In this embodiment, the cooling mode may include: fuel mode, pure electric mode, and hybrid mode.

[0064] like Figure 2 As shown, in an optional embodiment, the control module 10 is further configured to, in fuel mode, stop the electric compressor 5 from working, control the engine 1 to drive the mechanical compressor 2 to work, so as to cool the cargo box 9 of the refrigerated truck, and after the temperature detected by the temperature sensor 11 in the cargo box drops to the preset temperature, the mechanical compressor 2 enters a low power consumption state.

[0065] In this embodiment, in fuel mode, the electric compressor 5 is not working. The control module 10 can control the engine 1 to provide energy to the mechanical compressor 2, and the mechanical compressor 2 operates. The refrigerant passes through the first one-way valve 3, condenser 7, and evaporator 8 of the mechanical compressor 2 to cool the cargo box 9. Afterward, the refrigerant returns to the mechanical compressor 2 to continue circulating. The controller module collects the temperature of the cargo box 9 in real time through the temperature sensor 11 and controls the start and stop of the mechanical compressor 2 to maintain the cargo box 9 at the set temperature. After the mechanical compressor 2 has been working for a period of time, the temperature inside the cargo box 9 drops to the preset temperature. At this time, the mechanical compressor 2 can enter a low-power state to maintain the temperature inside the cargo box 9. The low-power state can be that after the temperature drops to the preset temperature, the mechanical compressor 2 stops working and then works for a period of time at intervals to maintain the temperature inside the cargo box 9.

[0066] like Figure 2 As shown, in an optional embodiment, the control module 10 is further configured to stop the mechanical compressor 2 from working in pure electric mode, control the electric compressor 5 to work, cool the cargo box 9 of the refrigerated truck, and after the temperature detected by the temperature sensor 11 in the cargo box drops to a preset temperature, the electric compressor 5 enters a low power consumption state.

[0067] In this embodiment, in pure electric mode, the control module 10 controls the power battery 4 to provide energy to the electric compressor 5, and controls the electric compressor 5 to work. The refrigerant passes through the second one-way valve 6, condenser 7, and evaporator 8 of the electric compressor 5 to cool the cargo box 9. Afterward, the refrigerant returns to the electric compressor 5 to continue circulating. The control module 10 collects the temperature of the cargo box 9 in real time through the temperature sensor 11, and controls the start and stop of the electric compressor 5 to keep the cargo box 9 at the set temperature. After the electric compressor 5 has been working for a period of time, the temperature inside the cargo box 9 drops to the preset temperature. At this time, the electric compressor 5 can enter a low-power state to maintain the temperature inside the cargo box 9. The low-power state can be that after the temperature drops to the preset temperature, the electric compressor 5 stops working, and then works for a period of time at intervals to maintain the temperature inside the cargo box 9. At the same time, the control module 10 monitors the power battery 4 in real time and controls the start and stop of the electric compressor 5 to prevent the power battery 4 from being over-discharged and protect the power battery 4.

[0068] like Figure 2As shown, in an optional embodiment, the control module 10 is further configured to, in hybrid mode, stop the mechanical compressor 2 when the refrigerated truck stops, control the electric compressor 5 to work, and cool the cargo box 9 of the refrigerated truck. After the temperature detected by the temperature sensor 11 in the cargo box drops to a preset temperature, control the engine 1 to work and drive the mechanical compressor 2 to work. The mechanical compressor 2 and the electric compressor 5 work synchronously. At this time, the power battery 4 supplying power to the electric compressor 5 is detected in real time, and the power ratio of the electric compressor 5 and the mechanical compressor 2 is adjusted according to the power status.

[0069] In this embodiment, in the hybrid mode, the refrigerated truck is parked and the engine 1 is not running. The temperature inside the cargo box 9 needs to be lowered until it reaches a preset temperature before loading can begin. The power battery 4 provides energy to the electric compressor 5 to cool the cargo box 9. Once the set temperature is reached, the driver starts the vehicle's engine 1 and drives to load the goods. The engine 1 drives the mechanical compressor 2, and the energy from the engine 1 powers both the mechanical compressor 2 and the power battery 4 to power the electric compressor 5, maintaining the temperature of the cargo box 9. This avoids the problem of the power battery 4 being unable to maintain the temperature of the cargo box 9 for an extended period. The user (driver) can switch between different modes using the buttons on the control module 10 to increase the cooling speed, reduce waiting time, increase the operating ratio of the electric compressor 5, reduce the fuel consumption of the engine 1, save energy, and reduce emissions. Remote monitoring and scheduling further reduce the time the user spends waiting for the vehicle to cool down.

[0070] In this embodiment, after the refrigerated truck starts and both the electric compressor 5 and the mechanical compressor 2 begin working, the power level of the power battery 4 can be monitored in real time. The power ratio of the electric compressor 5 and the mechanical compressor 2 can be adjusted according to the power level. For example, when the power battery 4 is between 50% and 80%, the electric compressor 5 operates at 80% power and the mechanical compressor 2 operates at 20% power. When the power battery 4 is between 30% and 50%, both operate at 50% power. When the power battery 4 is between 15% and 30%, both operate at 20% power and the mechanical compressor 2 operates at 80% power. When the power battery 4 is below 15%, the electric compressor 5 stops, and the mechanical compressor 2 operates at 100% power. By adjusting the power ratio of the electric compressor 5 and the mechanical compressor 2, fuel consumption is reduced, energy is saved, and emissions are reduced. Furthermore, stopping the electric compressor 5 when the power battery 4 is below 15% prevents over-discharge of the power battery 4 and protects the battery.

[0071] In this embodiment, the energy-saving hybrid refrigeration system can be self-tested before initialization. If the self-test passes, initialization can proceed; otherwise, any abnormalities detected during the self-test will be reported.

[0072] In this embodiment, when initializing the mechanical compressor 2 and the electric compressor 5, the corresponding one-way valves of both are closed.

[0073] In this embodiment, a photovoltaic power generation device can be installed on the cold chain vehicle to charge the power battery 4, and the power battery 4 can be charged through an external charging pile, etc.

[0074] In this embodiment, if the power battery 4 drops to 15% in pure electric mode, and the engine 1 is in operation at this time, the control module 10 automatically controls the electric compressor 5 to stop working and controls the engine 1 to drive the mechanical compressor 2 to work, switching the mode to fuel mode.

[0075] In this embodiment, if in hybrid mode, before the engine 1 is started, the power battery 4 charge drops to below 15%, the control module 10 can issue a voice broadcast "Please start the engine 1 and then cool down" through its electrically connected voice broadcast module, or display the corresponding instruction through the display electrically connected to the control module 10.

[0076] In this embodiment, both the mechanical compressor 2 and the electric compressor 5 have corresponding one-way valves at their outputs to prevent refrigerant from flowing back through another compressor that has stopped. The user sets the preset temperature of the cargo box 9 and turns the refrigeration on or off through the operation control module 10.

[0077] In this embodiment, the control module 10 may be electrically connected to buttons, etc., so that the user can set the preset temperature inside the cargo box 9 by pressing the buttons, and manually control the mechanical compressor 2 and the electric compressor 5 to start and stop by pressing the buttons, etc.

[0078] like Figure 3 As shown, in one optional embodiment, the electric refrigeration device includes: a power battery 4 and an electric compressor 5 electrically connected to a control module 10; the power battery 4 is electrically connected to the electric compressor 5; the control module 10 is configured to control the power battery 4 to supply power to the electric compressor 5 and control the operation of the electric compressor 5; the electric compressor 5 is connected to a condenser 7, the condenser 7 is connected to an evaporator 8, and the evaporator 8 is disposed in the cargo box 9 of the refrigerated truck; a temperature sensor 11 electrically connected to the control module 10 is disposed in the cargo box 9, and the control module 10 is further configured to control the electric compressor 5 to enter a low-power state based on the temperature inside the cargo box 9 detected by the temperature sensor 11.

[0079] In one optional embodiment, the mechanical refrigeration device includes: a mechanical compressor 2; the mechanical compressor 2 is connected to an engine 1, the engine 1 is electrically connected to a control module 10, and the control module 10 controls the engine 1 to start and drive the mechanical compressor 2 to work; the mechanical compressor 2 is connected to a condenser 7.

[0080] At least one other disclosed embodiment also provides a refrigeration method using the above-described energy-saving hybrid refrigeration system, comprising: a control module 10 obtaining the initialization times corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters, then initializing the electric refrigeration device and the mechanical refrigeration device according to the corresponding initialization times, and after initialization, controlling the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box 9 of the refrigerated truck according to the refrigeration mode.

[0081] At least one other disclosed embodiment also provides a cold chain vehicle, including: the above-described energy-saving hybrid refrigeration system.

[0082] In summary, this energy-saving hybrid refrigeration system includes: a control module 10, and an electric refrigeration device and a mechanical refrigeration device electrically connected to the control module 10. The control module 10 is configured to obtain the initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters, and then initialize the electric refrigeration device and the mechanical refrigeration device respectively according to the corresponding initialization time. After initialization, according to the refrigeration mode, the control module 10 controls the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box 9 of the refrigerated truck. This ensures that both the mechanical refrigeration device and the electric refrigeration device are fully initialized, avoiding mechanical failures, refrigeration system entropy gaps, scroll compressor malfunctions, and other faults caused by incomplete initialization when they are connected to the refrigeration system.

[0083] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0084] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0085] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0086] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An energy-saving hybrid refrigeration system, characterized in that, include: Control module (10), and electric refrigeration device and mechanical refrigeration device electrically connected to the control module (10); The control module (10) is configured to obtain the initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device according to the preset parameters, and then initialize the electric refrigeration device and the mechanical refrigeration device according to the corresponding initialization time, and after initialization, control the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box (9) of the cold chain vehicle according to the refrigeration mode.

2. The energy-saving hybrid refrigeration system as described in claim 1, characterized in that: The control module (10) is configured to obtain the initialization times corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters. The method includes: The electric refrigeration device includes an electric compressor (5); The mechanical refrigeration device includes a mechanical compressor (2); The preset parameters include: the standard initialization time of the electric compressor (5) and the mechanical compressor (2) at the preset standard temperature, the temperature influence coefficient, the type coefficient of the electric compressor (5) and the mechanical compressor (2), and the lubricating oil coefficient; The real-time initialization times for the electric compressor (5) in the electric refrigeration unit and the mechanical compressor (2) in the mechanical refrigeration unit are respectively: T1 = T0 * K1 * (1 + α * ΔT) * K3; T2 = T * K2 * (1 + α * ΔT) * K3; Wherein, T1 is the real-time initialization time corresponding to the electric compressor (5); T2 is the real-time initialization time corresponding to the mechanical compressor (2); T0 is the standard initialization time of the electric compressor (5) at the preset standard temperature; T is the standard initialization time of the mechanical compressor (2) at the preset standard temperature; K1 is the type coefficient of the electric compressor (5), when the cumulative working time of the electric compressor (5) is greater than the first preset time but less than the second preset time, K1=1 / 2K2, when the cumulative working time of the electric compressor (5) is greater than the second preset time, K1=K2; K2 is the type coefficient of the mechanical compressor (2); α is the temperature influence coefficient; ΔT is the difference between the current temperature and the preset standard temperature; K3 is the lubricating oil coefficient.

3. The energy-saving hybrid refrigeration system as described in claim 2, characterized in that: The control module (10) is configured to initialize the electric compressor (5) according to the real-time initialization time corresponding to the electric compressor (5), and according to the real-time initialization time corresponding to the mechanical compressor (2), after both the electric compressor (5) and the mechanical compressor (2) have completed initialization, control the electric compressor (5) and / or the mechanical compressor (2) to refrigerate the cargo box (9) of the cold chain vehicle according to the refrigeration mode.

4. The energy-saving hybrid refrigeration system as described in claim 3, characterized in that: The control module (10) is also configured to stop the electric compressor (5) in fuel mode, control the engine (1) to drive the mechanical compressor (2) to work, so as to cool the cargo box (9) of the cold chain vehicle, and after the temperature detected by the temperature sensor (11) in the compartment drops to the preset temperature, the mechanical compressor (2) enters a low power consumption state.

5. The energy-saving hybrid refrigeration system as described in claim 3, characterized in that: The control module (10) is also configured to stop the mechanical compressor (2) from working in pure electric mode and control the electric compressor (5) to work to cool the cargo box (9) of the cold chain vehicle. After the temperature detected by the temperature sensor (11) in the cargo box drops to the preset temperature, the electric compressor (5) enters a low power consumption state.

6. The energy-saving hybrid refrigeration system as described in claim 3, characterized in that: The control module (10) is also configured to, in hybrid mode, when the refrigerated truck stops, the mechanical compressor (2) stops working and the electric compressor (5) is controlled to work to cool the cargo box (9) of the refrigerated truck. After the temperature detected by the temperature sensor (11) in the cargo box drops to the preset temperature, the engine (1) is controlled to work and drive the mechanical compressor (2) to work. The mechanical compressor (2) and the electric compressor (5) work synchronously. At this time, the power battery (4) supplying power to the electric compressor (5) is detected in real time, and the power ratio of the electric compressor (5) and the mechanical compressor (2) is adjusted according to the power status.

7. The energy-saving hybrid refrigeration system as described in claim 1, characterized in that: The electric refrigeration device includes: a power battery (4) and an electric compressor (5) electrically connected to the control module (10). The power battery (4) is electrically connected to the electric compressor (5); The control module (10) is configured to control the power battery (4) to supply power to the electric compressor (5) and control the operation of the electric compressor (5); The electric compressor (5) is connected to the condenser (7), the condenser (7) is connected to the evaporator (8), and the evaporator (8) is installed inside the cargo box (9) of the refrigerated truck. The cargo box (9) is equipped with a temperature sensor (11) electrically connected to the control module (10). The control module (10) is also configured to control the electric compressor (5) to enter a low-power state based on the temperature inside the cargo box (9) detected by the temperature sensor (11).

8. The energy-saving hybrid refrigeration system as described in claim 7, characterized in that: The mechanical refrigeration device includes: a mechanical compressor (2); The mechanical compressor (2) is connected to the engine (1), and the engine (1) is electrically connected to the control module (10). The control module (10) controls the engine (1) to start and drive the mechanical compressor (2) to work. The mechanical compressor (2) is connected to the condenser (7).

9. A refrigeration method employing the energy-saving hybrid refrigeration system as described in claim 1, characterized in that, include: The control module (10) obtains the initialization time corresponding to the electric refrigeration device and the mechanical refrigeration device according to the preset parameters, and then initializes the electric refrigeration device and the mechanical refrigeration device according to the corresponding initialization time. After initialization, the control module (10) controls the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo box (9) of the cold chain vehicle according to the refrigeration mode.

10. A refrigerated truck, characterized in that, include: The energy-saving hybrid refrigeration system as described in claim 1.

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