Energy-saving hybrid refrigeration system, refrigeration method and cold chain vehicle

Abstract

The invention belongs to the technical field of refrigeration, and particularly relates to energy-saving refrigeration, in particular to an energy-saving hybrid refrigeration system, a refrigeration method and a cold chain vehicle, the energy-saving hybrid refrigeration system comprises a control module, an electric refrigeration device and a mechanical refrigeration device, and the electric refrigeration device and the mechanical refrigeration device are 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 according to preset parameters, then initialize the electric refrigeration device and the mechanical refrigeration device according to the corresponding initialization time, and control the electric refrigeration device and the mechanical refrigeration device according to a refrigeration mode after initialization. The electric refrigeration device and / or the mechanical refrigeration device are / is controlled to refrigerate the interior of the container of the cold chain vehicle, so that complete initialization of the mechanical refrigeration device and the electric refrigeration device is ensured, and mechanical faults, scroll compressor abnormity and other faults caused by the fact that the mechanical refrigeration device and the electric refrigeration device are connected into a refrigeration system when initialization is incomplete are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration, specifically relates to energy-saving refrigeration, and particularly relates to an energy-saving hybrid refrigeration system, a refrigeration method, and a cold chain vehicle. Background Art

[0002] When refrigeration is required in the cargo box of a cold chain vehicle and an electric compressor and a mechanical compressor are coupled in a refrigeration system, due to the different designs of the mechanical compressor (piston compressor) and the electric compressor (scroll compressor), their initialization times are also different. As Figure 4 shown, when the compressor is connected to the refrigeration system before being fully initialized, mechanical failures, abnormal operation of the scroll compressor, etc. will occur.

[0003] Therefore, due to the technical problem that mechanical failures, abnormal operation of the scroll compressor, etc. occur to the compressor because the mechanical compressor and the electric compressor are connected to the refrigeration system for refrigeration before being fully initialized, it is necessary to design an energy-saving hybrid refrigeration system, a refrigeration method, and a cold chain vehicle.

[0004] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0005] The embodiments of the present disclosure at least provide an energy-saving hybrid refrigeration system, a refrigeration method, and a cold chain vehicle.

[0006] In a first aspect, the embodiments of the present disclosure provide an energy-saving hybrid refrigeration system, including: 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 times respectively 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 times, and control 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 after initialization.

[0007] In an optional implementation manner, the method by which the control module is configured to obtain the initialization times respectively corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters includes: The electric refrigeration device includes an electric compressor; The mechanical refrigeration device includes a mechanical compressor; The preset parameters include: the standard initialization times of the electric compressor and the mechanical compressor at a preset standard temperature, a temperature influence coefficient, type coefficients of the electric compressor and the mechanical compressor, and a lubricating oil coefficient; The real-time initialization times corresponding to the electric compressor in the electric refrigeration device and the mechanical compressor in the mechanical refrigeration device are respectively: T1 = T0 * K1 * (1 + α * ΔT) * K3; T2 = T * K2 * (1 + α * ΔT) * K3; Among them, T1 is the real-time initialization time corresponding to the electric compressor; T2 is the real-time initialization time corresponding to the mechanical compressor; T0 is the standard initialization time of the electric compressor at the preset standard temperature; T is the standard initialization time of the mechanical compressor at the preset standard temperature; K1 is the electric compressor type coefficient, and when the cumulative working time of the electric compressor is greater than the first preset time and less than the second preset time, K1 = 1 / 2 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.

[0008] In an optional implementation manner, 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 are initialized, according to the refrigeration mode, control the electric compressor and / or the mechanical compressor to refrigerate the cargo compartment of the cold chain vehicle.

[0009] In an optional implementation manner, the control module is further configured to, in the fuel mode, stop the electric compressor from working, control the engine to drive the mechanical compressor to work to refrigerate the cargo compartment of the cold chain vehicle, and after the temperature detected by the temperature sensor in the compartment drops to the preset temperature, the mechanical compressor enters the low-power state.

[0010] In an optional implementation manner, the control module is further configured to, in the pure electric mode, stop the mechanical compressor from working, control the electric compressor to work to refrigerate the cargo compartment of the cold chain vehicle, and after the temperature detected by the temperature sensor in the compartment drops to the preset temperature, the electric compressor enters the low-power state.

[0011] In an optional implementation manner, the control module is further configured to, in the hybrid mode, when the cold chain vehicle stops, stop the mechanical compressor from working, control the electric compressor to work to refrigerate the cargo compartment of the cold chain vehicle, and after the temperature detected by the temperature sensor in the compartment drops to the preset temperature, control the engine to work and drive the mechanical compressor to work. The mechanical compressor and the electric compressor work synchronously. At this time, the power battery power supply 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 situation.

[0012] In an alternative embodiment, the electric refrigeration device includes: a power battery and an electric compressor electrically connected to a control module; The power battery is electrically connected to the electric compressor; The control module is configured to control the power battery to supply power to the electric compressor and control the operation of the electric compressor; The electric compressor is connected to a condenser, the condenser is connected to an evaporator, and the evaporator is arranged in the cargo box of the cold chain vehicle; A temperature sensor electrically connected to the control module is arranged in the cargo box, and the control module is further configured to control the electric compressor to enter a low power consumption state according to the temperature in the cargo box detected by the temperature sensor.

[0013] In an alternative embodiment, the mechanical refrigeration device includes: a mechanical compressor; The mechanical compressor is connected to an engine, the engine is electrically connected to the control module, and the control module controls the engine to start and drive the mechanical compressor to work; The mechanical compressor is connected to the condenser.

[0014] In a second aspect, an embodiment of the present disclosure further provides a refrigeration method using the above energy-saving hybrid refrigeration system, including: The control module obtains the respective initialization times corresponding to the electric refrigeration device and the mechanical refrigeration device according to preset parameters, then initializes the electric refrigeration device and the mechanical refrigeration device respectively according to the corresponding initialization times, and 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 after initialization.

[0015] In a third aspect, an embodiment of the present disclosure further provides a cold chain vehicle, including: The above energy-saving hybrid refrigeration system.

[0016] The beneficial effect of the present invention is that the present 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 respective initialization times 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 times, and control 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 after initialization, thereby ensuring that both the mechanical refrigeration device and the electric refrigeration device are fully initialized and avoiding faults such as mechanical failures and abnormal scroll compressors caused by incomplete initialization when the two are connected to the refrigeration system.

[0017] Other features and advantages of the present invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention. The objectives and other advantages of the present invention are realized and attained by the structure particularly pointed out in the specification and the drawings.

[0018] To make the above objectives, features and advantages of the present invention more comprehensible, specific preferred embodiments are given hereinbelow in conjunction with the appended drawings and are described in detail as follows. Brief Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are 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.

[0020] Figure 1 A schematic block diagram of an energy-saving hybrid refrigeration system provided by an embodiment of the present disclosure; Figure 2 A flowchart of a refrigeration mode provided by an embodiment of the present disclosure; Figure 3 A schematic connection diagram of an energy-saving hybrid refrigeration system provided by an embodiment of the present disclosure; Figure 4 A schematic diagram of the influence of compressor uninitialization.

[0021] In the figure: 1, engine; 2, mechanical compressor; 3, first one-way valve; 4, power battery; 5, electric compressor; 6, second one-way valve; 7, condenser; 8, evaporator; 9, cargo box; 10, control module; 11, temperature sensor. Detailed Description of the Embodiments

[0022] 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 in conjunction with the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0023] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that a particular feature, structure, or characteristic following such phrase can be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic can be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of terms such as "example", "exemplary", etc. is intended to present concepts in a concrete manner.

[0024] Refrigeration is required inside the cargo box of a cold chain vehicle. When an electric compressor and a mechanical compressor are coupled in a refrigeration system, due to the different designs of the mechanical compressor (piston compressor) and the electric compressor (scroll compressor), their initialization times are also different. As Figure 4 shown, when the compressor is connected to the refrigeration system before being fully initialized, mechanical failures, abnormal conditions of the scroll compressor, etc. will occur.

[0025] The initialization of the mechanical compressor is that, before fully connecting to the refrigerant, the oil temperature of the piston compressor is normal. If the initialization is not complete, the piston lubrication will be abnormal. If it is suddenly loaded, the mechanical system will get stuck. Continuing to operate will damage the mechanical compressor and result in mechanical failures, etc.; The initialization of the electric compressor is that, before fully connecting to the refrigerant, the power of the electric drive module, such as the motor, is at a stable value. When not fully initialized and suddenly loaded, the motor cannot handle the centrifugal force after loading, and the scroll module will collide under the action of the centrifugal force, damaging the scroll and resulting in abnormal conditions of the scroll compressor.

[0026] Regarding the defects existing in the above solutions, they are all the results obtained by the inventors through practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed in the present disclosure by the present disclosure for the above problems should all be the contributions made by the inventors during the process of the present disclosure.

[0027] It should be noted that: Similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0029] As Figure 1As 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 times corresponding to the electric refrigeration device and the mechanical refrigeration device respectively according to preset parameters, and then initialize the electric refrigeration device and the mechanical refrigeration device respectively according to the corresponding initialization times, and after initialization, control the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo compartment 9 of the cold chain vehicle according to the refrigeration mode, thereby ensuring that both the mechanical refrigeration device and the electric refrigeration device are fully initialized, and avoiding faults such as mechanical failures and abnormal scroll compressors caused by incomplete initialization when the two are connected to the refrigeration system.

[0030] In this embodiment, by using the electric refrigeration device and the mechanical refrigeration device under different refrigeration modes, the fuel consumption is reduced, and energy conservation and emission reduction are achieved.

[0031] In an optional implementation manner, 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 respectively according to preset parameters includes: an electric compressor 5 is included in the electric refrigeration device; a mechanical compressor 2 is included in the mechanical refrigeration device; the preset parameters include: the standard initialization times of the electric compressor 5 and the mechanical compressor 2 under the preset standard temperature, the temperature influence coefficient, the type coefficients of the electric compressor 5 and the mechanical compressor 2, and the lubricating oil coefficient; The real-time initialization times corresponding to the electric compressor 5 in the electric refrigeration device and the mechanical compressor 2 in the mechanical refrigeration device 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 under the preset standard temperature; T is the standard initialization time of the mechanical compressor 2 under the preset standard temperature; K1 is the type coefficient of the electric compressor 5, and when the cumulative working time of the electric compressor 5 is greater than the first preset time and less than the second preset time, K1 = 1 / 2 K2, 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.

[0032] In this embodiment, the preset standard temperature can be 20 degrees Celsius.

[0033] 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 startup time); when the temperature > 10 °C: α_summer = 0.01 (high temperature reduces viscosity and shortens startup time).

[0034] 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 when the mechanical compressor 2 has accumulated 1000 hours of operation, and the second preset time can be when the mechanical compressor 2 has accumulated 2000 hours of operation. Since the electric compressor 5 and the mechanical compressor 2 are installed on a cold chain vehicle, the vibration of the mechanical compressor 2 will be transmitted to the electric compressor 5. Therefore, after the accumulated working time of the mechanical compressor 2 increases, the vibration will affect the components of the electric compressor 5, and it is necessary to associate the type coefficient of the electric compressor 5 with the type coefficient of the mechanical compressor 2.

[0035] In this embodiment, the lubricating oil coefficient is set according to the time accumulation and the temperature reference parameter table. The lubricating oil coefficient of new oil (usage time ≤ 1000 hours) is relatively small, and the lubricating oil coefficient of old oil (usage time > 1000 hours) is relatively large.

[0036] In an alternative embodiment, the control module 10 is configured to initialize the electric compressor 5 according to the corresponding real-time initialization time of the electric compressor 5, and according to the corresponding real-time initialization time of the mechanical compressor 2. After both the electric compressor 5 and the mechanical compressor 2 are initialized, according to the refrigeration mode, control the electric compressor 5 and / or the mechanical compressor 2 to refrigerate the cargo compartment 9 of the cold chain vehicle.

[0037] In this embodiment, the refrigeration mode can include: fuel mode, pure electric mode, and hybrid mode.

[0038] As Figure 2 shown, in an alternative embodiment, the control module 10 is further configured to, in the fuel mode, stop the electric compressor 5 from working, control the engine 1 to drive the mechanical compressor 2 to work to refrigerate the cargo compartment 9 of the cold chain vehicle, and after the temperature detected by the temperature sensor 11 in the carriage drops to the preset temperature, the mechanical compressor 2 enters a low-power state.

[0039] In this embodiment, in the fuel mode, the electric compressor 5 does not work. The control module 10 can control the engine 1 to supply energy to the mechanical compressor 2. The mechanical compressor 2 works, and the refrigerant passes through the first one-way valve 3 of the mechanical compressor 2, the condenser 7, and the evaporator 8 to refrigerate the cargo compartment 9. Then the coolant returns to the mechanical compressor 2 to continue circulating. The controller module collects the temperature of the cargo compartment 9 in real time through the temperature sensor 11, and keeps the cargo compartment 9 at the set temperature by controlling the start and stop of the mechanical compressor 2. After the mechanical compressor 2 works for a period of time, the temperature in the cargo compartment 9 drops to the preset temperature. At this time, the mechanical compressor 2 can enter the low-power state to maintain the temperature in the cargo compartment 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 in the cargo compartment 9.

[0040] As Figure 2 shown, in an alternative embodiment, the control module 10 is further configured to, in the pure electric mode, stop the mechanical compressor 2 and control the electric compressor 5 to work to refrigerate the interior of the cargo compartment 9 of the cold chain vehicle. And after the temperature detected by the temperature sensor 11 in the carriage drops to the preset temperature, the electric compressor 5 enters the low-power state.

[0041] In this embodiment, in the pure electric mode, the control module 10 controls the power battery 4 to supply energy to the electric compressor 5 and controls the electric compressor 5 to work. The refrigerant passes through the second one-way valve 6 of the electric compressor 5, the condenser 7, and the evaporator 8 to refrigerate the cargo compartment 9. Then the coolant returns to the electric compressor 5 to continue circulating. The control module 10 collects the temperature of the cargo compartment 9 in real time through the temperature sensor 11, and keeps the cargo compartment 9 at the set temperature by controlling the start and stop of the electric compressor 5. After the electric compressor 5 works for a period of time, the temperature in the cargo compartment 9 drops to the preset temperature. At this time, the electric compressor 5 can enter the low-power state to maintain the temperature in the cargo compartment 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 in the cargo compartment 9. At the same time, the control module 10 monitors the power of the power battery 4 in real time and avoids over-discharging of the power battery 4 by controlling the start and stop of the electric compressor 5 to protect the power battery 4.

[0042] As Figure 2As shown, in an alternative embodiment, the control module 10 is further configured to, in the hybrid mode, when the cold chain vehicle stops, the mechanical compressor 2 stops working, and the electric compressor 5 is controlled to work to refrigerate the cargo compartment 9 of the cold chain vehicle. After the temperature detected by the temperature sensor 11 in the compartment 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 of 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 condition.

[0043] In this embodiment, in the hybrid mode, at this time, the cold chain vehicle is in a stopped state and the engine 1 does not work. At this time, it is necessary to reduce the temperature in the cargo compartment 9. The cargo can be loaded only after the temperature in the cargo compartment 9 drops to the preset temperature. At this time, the power battery 4 is used to provide energy for the electric compressor 5 to refrigerate the cargo compartment 9. After reaching the set temperature, the driver starts the vehicle engine 1 and drives to load the goods. The engine 1 drives the mechanical compressor 2 to work, and the energy of the engine 1 is used to drive the mechanical compressor 2 to work and the power battery 4 enables the electric compressor 5 to work to maintain the temperature of the cargo compartment 9. In this way, the problem that the power battery 4 cannot maintain the temperature of the cargo compartment 9 for a long time can be avoided. The user (driver) can switch different modes through the buttons on the control module 10 to increase the refrigeration speed, reduce waiting, increase the working ratio of the electric compressor 5, reduce the fuel consumption of the engine 1, save energy and reduce emissions. Through remote monitoring and scheduling, the time for the user to wait for cooling in the vehicle is reduced.

[0044] In this embodiment, after the cold chain vehicle starts and both the electric compressor 5 and the mechanical compressor 2 start to work, the power of the power battery 4 can be detected in real time, and the power ratio of the electric compressor 5 and the mechanical compressor 2 is adjusted according to the power condition. For example, when the power of the power battery 4 is between 50% and 80%, the electric compressor 5 works at 80% power, and the mechanical compressor 2 works at 20% power. When the power of the power battery 4 is between 30% and 50%, the electric compressor 5 works at 50% power, and the mechanical compressor 2 works at 50% power. When the power of the power battery 4 is between 15% and 30%, the electric compressor 5 works at 20% power, and the mechanical compressor 2 works at 80% power. When the power of the power battery 4 is lower than 15%, the electric compressor 5 stops, and the mechanical compressor 2 works at 100% power. By adjusting the power ratio of the electric compressor 5 and the mechanical compressor 2, fuel use is reduced, energy is saved, and emissions are reduced. And when the power of the power battery 4 is lower than 15%, the electric compressor 5 stops working to avoid over-discharging of the power battery 4 and protect the battery.

[0045] In this embodiment, before initialization, the energy-saving hybrid refrigeration system can be self-checked. After the self-check passes, initialization is performed; otherwise, the abnormal conditions determined during the self-check are reported.

[0046] In this embodiment, when initializing the mechanical compressor 2 and the electric compressor 5, the corresponding check valves of both are closed.

[0047] In this embodiment, a photovoltaic power generation device can be set on the cold chain vehicle to charge the power battery 4, and the power battery 4 can also be charged through an external charging pile or the like.

[0048] In this embodiment, in the pure electric mode, when the power of the power battery 4 drops to 15%, if the engine 1 is in the working state 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, and switches the mode to the fuel mode.

[0049] In this embodiment, in the hybrid mode, before the engine 1 is started, when the power of the power battery 4 drops below 15%, the control module 10 can send a voice broadcast of "Please start the engine 1 for refrigeration" through the voice broadcast module electrically connected thereto, or display a corresponding instruction through the display electrically connected to the control module 10.

[0050] In this embodiment, there are corresponding check valves for the outputs of the mechanical compressor 2 and the electric compressor 5, which can prevent the refrigerant from flowing back through the other stopped compressor; the user sets the preset temperature of the cargo compartment 9 and turns on or off the refrigeration by operating the control module 10.

[0051] In this embodiment, the control module 10 can be electrically connected with buttons or the like, so that the user can set the preset temperature in the cargo compartment 9 through the buttons, and manually control the start and stop of the mechanical compressor 2 and the electric compressor 5 through the buttons or the like.

[0052] As Figure 3 shown, in an optional implementation manner, 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 electric compressor 5 to work; the electric compressor 5 is connected to a condenser 7, the condenser 7 is connected to an evaporator 8, and the evaporator 8 is arranged in the cargo compartment 9 of the cold chain vehicle; a temperature sensor 11 electrically connected to the control module 10 is arranged in the cargo compartment 9, and the control module 10 is further configured to control the electric compressor 5 to enter a low power consumption state according to the temperature detected by the temperature sensor 11 in the cargo compartment 9.

[0053] In an alternative 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 operate after starting; the mechanical compressor 2 is connected to a condenser 7.

[0054] At least one other disclosed embodiment also provides a refrigeration method using the above energy-saving hybrid refrigeration system, including: the control module 10 obtains the initialization times corresponding to the electric refrigeration device and the mechanical refrigeration device respectively according to preset parameters, then initializes the electric refrigeration device and the mechanical refrigeration device respectively according to the corresponding initialization times, and after initialization, controls the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo compartment 9 of the cold chain vehicle according to the refrigeration mode.

[0055] At least one other disclosed embodiment also provides a cold chain vehicle, including: the above energy-saving hybrid refrigeration system.

[0056] In summary, the present 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 times 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 times, and after initialization, control the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo compartment 9 of the cold chain vehicle according to the refrigeration mode, thereby ensuring that both the mechanical refrigeration device and the electric refrigeration device are fully initialized, and avoiding faults such as mechanical failures, refrigeration system entropy gaps, and scroll compressor abnormalities caused by incomplete initialization when the two are connected to the refrigeration system.

[0057] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; 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 communication inside 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 situations.

[0058] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply order or sequence unless explicitly indicated in the text. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0059] Spatially relative terms, such as "inner", "outer", "beneath", "below", "lower", "above", "upper", etc., may be used herein to facilitate describing the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as "beneath" or "below" another element or feature will be oriented "above" the other element or feature. Thus, the exemplary term "beneath" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein are to be interpreted accordingly.

[0060] Based on the above revelation of the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An energy-saving hybrid refrigeration system, characterized in that, Comprising: 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 times 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 times, and after initialization, control the electric refrigeration device and / or the mechanical refrigeration device to refrigerate the cargo compartment (9) of the cold chain vehicle according to the refrigeration mode.

2. The energy-saving hybrid refrigeration system according to claim 1, wherein: 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 respectively 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 times of the electric compressor (5) and the mechanical compressor (2) at the preset standard temperature, the temperature influence coefficient, the type coefficients of the electric compressor (5) and the mechanical compressor (2), and the lubricating oil coefficient; The real-time initialization times corresponding to the electric compressor (5) in the electric refrigeration device and the mechanical compressor (2) in the mechanical refrigeration device 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 and 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 according to claim 2, wherein: 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) are initialized, control the electric compressor (5) and / or the mechanical compressor (2) to refrigerate the cargo compartment (9) of the cold chain vehicle according to the refrigeration mode.

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

5. The energy-saving hybrid refrigeration system according to claim 3, characterized in that: The control module (10) is further configured to, in the pure electric mode, stop the operation of the mechanical compressor (2), control the electric compressor (5) to operate, so as to refrigerate the cargo compartment (9) of the cold chain vehicle, and after the temperature detected by the temperature sensor (11) in the compartment drops to a preset temperature, the electric compressor (5) enters a low-power state.

6. The energy-saving hybrid refrigeration system according to claim 3, characterized in that: The control module (10) is further configured to, in the hybrid mode, when the cold chain vehicle stops, stop the operation of the mechanical compressor (2), control the electric compressor (5) to operate, so as to refrigerate the cargo compartment (9) of the cold chain vehicle, and after the temperature detected by the temperature sensor (11) in the compartment drops to a preset temperature, control the engine (1) to operate and drive the mechanical compressor (2) to operate, the mechanical compressor (2) and the electric compressor (5) operate synchronously, and at this time, the power of 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 condition.

7. The energy-saving hybrid refrigeration system according to 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 electric compressor (5) to operate; The electric compressor (5) is connected to a condenser (7), the condenser (7) is connected to an evaporator (8), and the evaporator (8) is arranged in the cargo compartment (9) of the cold chain vehicle; A temperature sensor (11) electrically connected to the control module (10) is arranged in the cargo compartment (9), and the control module (10) is further configured to control the electric compressor (5) to enter a low-power state according to the temperature in the cargo compartment (9) detected by the temperature sensor (11).

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

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

10. A cold chain vehicle, characterized in that, Comprising: The energy-saving hybrid refrigeration system according to claim 1.

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