Waste heat heating system and refrigerated trucks

Abstract

The present application provides a waste heat heating system and a refrigerated vehicle. The waste heat heating system includes a heated space and a refrigeration device for cooling a refrigerated cargo box, the refrigeration device has a hot air outlet, and the heated space is connected to the hot air outlet. By using the hot air discharged by the refrigeration device to heat the heated space, energy can be effectively saved and the cruising range of the vehicle using the waste heat heating system can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle heating, and in particular to a waste heat heating system and a refrigerated vehicle. Background Art

[0002] The cruising range is one of the important indicators to measure the quality of a vehicle.

[0003] In the context of energy conservation and emission reduction in the new era, electric vehicles are developing day by day. In the field of electric vehicles and hybrid vehicles with batteries, fast power consumption and limited cruising range are the pain points of users. In the field of refrigerated trucks, there is also the problem of limited cruising range. Among them, for example, the heating of the driver's cab is usually heated in a single mode such as burning oil, burning electricity or heat pump. These heating methods are not energy-saving and will reduce the vehicle's cruising range, especially for vehicles using batteries. Because the total capacity of the battery decreases in low temperature environments, the cruising range of vehicles using such batteries will be reduced. Using this heating method again will accelerate energy consumption and further reduce the vehicle's cruising range.

[0004] In order to increase the vehicle's range, a new heating mode needs to be developed. Summary of the invention

[0005] The purpose of this application is to solve the problem of heating a vehicle while minimizing the reduction in cruising range. In view of this, the embodiments of this application are dedicated to providing a waste heat heating system to extend the cruising range of the vehicle.

[0006] In a first aspect, the present invention provides a waste heat heating system for heating a refrigerated truck, the waste heat heating system comprising a heated space and a refrigeration device for cooling a refrigerated cargo box, the refrigeration device having a hot air outlet, and the heated space is connected to the hot air outlet.

[0007] In a first possible implementation, the waste heat heating system includes a warm air distributor connecting a hot air outlet and an air inlet of a heated space.

[0008] In combination with the first possible implementation, in a second possible implementation, a plurality of dampers and a plurality of drives are provided on the warm air distributor, and each damper is provided with one of the above drives to drive the damper to move.

[0009] In combination with the second possible implementation, in a third possible implementation, the plurality of dampers include a first damper leading to the atmosphere, and the plurality of drives include a first motor that controls the movement of the first damper.

[0010] In combination with the third possible implementation, in a fourth possible implementation, the heated space includes a driver's cab, a second damper leading to the driver's cab is provided on the warm air distributor, and the multiple drives include a second motor for controlling the movement of the second damper.

[0011] In combination with the third possible implementation, in a fifth possible implementation, the heated space includes a battery area, the battery area includes a battery temperature control box and a battery installed in the battery temperature control box, a third damper leading to the battery area is provided on the warm air distributor, and the multiple drives include a third motor for controlling the movement of the third damper.

[0012] In combination with the third possible implementation, in a sixth possible implementation, the waste heat heating system includes a temperature management module, and the battery temperature control box is also equipped with a temperature detection device and a battery management module. The battery management module can receive the temperature information detected by the temperature detection device and transmit the temperature information to the temperature management module. The temperature management module issues instructions to multiple drivers to control the opening angle of each damper.

[0013] In combination with the sixth possible implementation, in a seventh possible implementation, the waste heat heating system includes a filter, an air inlet of the filter is connected to the hot air outlet, and an outlet of the filter is connected to an air inlet of a warm air distributor.

[0014] In a second aspect, the present invention provides a refrigerated truck, which includes the above-mentioned waste heat heating system.

[0015] In combination with the second aspect, in a first possible implementation, the refrigerated truck further includes a supplementary heating system, and a heating mode of the supplementary heating system adopts at least one of an oil-burning mode, an electricity-burning mode, and a heat pump mode.

[0016] Based on the above scheme, by utilizing the hot air exhausted by the refrigeration equipment to heat the heated space, energy can be effectively saved and the cruising range of the vehicle using the waste heat heating system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a waste heat heating system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] In order to facilitate understanding of the present application, the present application is described below based on specific embodiments and in conjunction with the accompanying drawings.

[0020] First, see Figure 1As shown, the present application provides a waste heat heating system for heating a refrigerated truck. The waste heat heating system includes a heated space 1 and a refrigeration device 3 for cooling a refrigerated cargo box 2. The refrigeration device 3 has a hot air outlet 31. The heated space 1 is connected to the hot air outlet 31.

[0021] This application uses the hot air discharged from the refrigeration equipment to heat the heated space, which can effectively save energy and increase the cruising range of the vehicle using the waste heat heating system. Especially for vehicles using batteries, the importance of increasing the cruising range in cold seasons is self-evident. The batteries currently used are mainly lithium-ion batteries. When the ambient temperature is low, the activity of lithium ions will decrease. Because when the outside temperature is lower than a certain temperature, the viscosity of the electrolyte solution increases, resulting in the deterioration of the ability of lithium ions to pass through the solution, the activity is reduced, and the total capacity of the battery is reduced, which in turn causes the cruising range of vehicles using such batteries to decrease. Therefore, reducing battery consumption and increasing cruising range are particularly important for electric vehicles in low temperature environments.

[0022] In another embodiment, the waste heat heating system includes a warm air distributor 4 connecting the hot air outlet 31 and the air inlet of the heated space 1. By providing the warm air distributor 4, the amount of hot air from the hot air outlet 31 to the heated space 1 can be adjusted as needed.

[0023] In another embodiment, the hot air outlet 31 and the air inlet of the warm air distributor 4 are connected via a hot air connecting pipe 7. The hot air connecting pipe 7 is detachably connected to the hot air outlet 31, and / or the hot air connecting pipe 7 is detachably connected to the warm air distributor 4.

[0024] In another embodiment, a plurality of dampers and a plurality of drivers are provided on the warm air distributor 4, and a driver is provided corresponding to each damper to drive the damper to move. By providing a driver corresponding to each damper, the opening degree of each damper can be controlled respectively, thereby controlling the amount of hot air discharged through different dampers.

[0025] In another embodiment, the plurality of dampers include a first damper 41 leading to the atmosphere, and the plurality of drivers include a first motor 42 for controlling the movement of the first damper 41. By providing the first damper 41, when the heated space 1 does not need to continue heating, the hot air blown out from the hot air outlet 31 can be directly discharged into the atmosphere through the first damper 41. When the heated space 1 needs to be heated, the first damper 41 is closed or opened at a certain angle, and the hot air blown out from the hot air outlet 31 mainly enters different areas of the heated space 1 through other dampers.

[0026] In another embodiment, the heated space 1 includes a driver's cab 11, a second damper 43 leading to the driver's cab 11 is provided on the warm air distributor 4, and the plurality of drives include a second motor 44 for controlling the movement of the second damper 43. When the waste heat heating system only heats the driver's cab 11, the size of the second damper 43 can be controlled by the second motor 44 according to the temperature of the driver's cab 11: when the temperature is too high, the opening angle of the second damper 43 can be reduced, and the first damper 41 can be opened at a certain angle; when the temperature is too low, the opening angle of the second damper 43 can be increased, and the first damper 41 can be closed at a certain angle or completely closed.

[0027] In another embodiment, the heated space 1 includes a battery area 12, the battery area 12 includes a battery temperature control box 121 and a battery 122 installed in the battery temperature control box 121, and the warm air distributor 4 is provided with a third damper 45 leading to the battery area 12, and the plurality of drives include a third motor 46 for controlling the action of the third damper 45. The battery area 12 and the driver's cab 11 can be heated separately or simultaneously. When the battery area 12 is heated separately, the size of the third damper 45 can be controlled by the third motor 46 according to the temperature of the battery area 12. When the temperature is too high, the opening angle of the third damper 45 can be reduced, and the first damper 41 can be opened to a certain angle. When the temperature is too low, the opening angle of the third damper 45 can be increased, and the opening angle of the first damper 41 can be reduced or completely closed.

[0028] When the number of areas in the heated space 1 increases, more dampers can be opened on the warm air distributor 4 to connect the areas that need to be heated.

[0029] In another embodiment, the waste heat heating system includes a temperature management module 5, and the battery temperature control box 121 is also equipped with a temperature detection device 123 and a battery management module. The battery management module can receive the temperature information detected by the temperature detection device 123 and transmit the temperature information to the temperature management module 5. The temperature management module 5 receives the temperature information and issues instructions to multiple drivers to control the opening angle of each damper according to the temperature information. In this embodiment, the temperature management module 5 can be set in the driver's cab 11.

[0030] In this embodiment, when the driver's cab 11 and the battery area 12 are heated at the same time, there are multiple working conditions due to different ambient temperatures. For example, in a heating working condition, the ambient temperature is in the first temperature range. At this time, the hot air blown out from the hot air outlet 31 can meet the temperature requirement of the battery area 12, and there is still surplus. A part of the surplus hot air is directed to the driver's cab 11. In this working condition, when the hot air blown out from the hot air outlet 31 simultaneously meets the heating requirements of the driver's cab 11 and the battery area 12 but there is no surplus, the first damper 41 is closed. The temperature management module 5 can be configured to give priority to ensuring the temperature of the battery area 12, and adjust the opening angle of the second damper 43 leading to the driver's cab 11 and the opening angle of the third damper 45 leading to the battery area 12 according to the temperature of the battery area 12. When the temperature of the battery area 12 is low, the opening angle of the second damper 43 can be reduced, and the opening angle of the third damper 45 can be increased. Conversely, when the temperature of the battery area 12 is high, the opening angle of the second damper 43 can be increased, and the opening angle of the third damper 45 can be reduced.

[0031] In this embodiment, for example, in another heating condition, the ambient temperature is in the second temperature range. At this time, the hot air blown out from the hot air outlet 31 can meet the temperature requirements of the driver's cab 11 and the battery area 12 at the same time, and there is still surplus. At this time, the third damper 45, the second damper 43 and the first damper 41 can all be partially opened.

[0032] In this embodiment, for example, in another heating condition, the ambient temperature is in the third temperature range. At this time, the hot air blown out from the hot air outlet 31 is not enough to support the heating of the driver's cab 11 and the battery area 12 at the same time. At this time, if the temperature of the battery area 12 is prioritized, the third damper 45 is fully opened, and the second damper 43 and the first damper 41 are all closed.

[0033] In another embodiment, the battery temperature control box 121 includes a top cover 1211 and a side wall 1212, and the side wall 1212 and / or the top cover 1211 can be opened or closed. When the outside temperature is lower than a certain temperature, the side wall 1212 and the top cover 1211 are both closed and can provide heat to the battery temperature control box 121. In this embodiment, the top cover 1211 can also be set as a fixed type for sunshade and rain protection; the side wall 1212 can be set as a movable type that can be opened for ventilation; when the temperature is higher than a certain temperature, the side wall 1212 is opened for ventilation and cooling. In this embodiment, the side wall 1212 and the top cover 1211 can also be set to be able to be opened, so that when the temperature is too high and there is no rain or sun, the side wall 1212 and the top cover 1211 can be opened for ventilation.

[0034] In another embodiment, an atmosphere connecting pipe 1213 is provided on the battery temperature control box 121. When the waste heat heating system is used to heat the battery 122, due to the existence of the battery temperature control box 121, the gas entering the battery temperature control box 121 from the third damper 45 gradually increases with the passage of time. In order to prevent the air pressure in the battery temperature control box 121 from being too high, an atmosphere connecting pipe 1213 is required to balance the air pressure in the battery temperature control box 121.

[0035] In yet another embodiment, the battery temperature control box 121 includes a bottom plate 1214 .

[0036] The atmosphere communication pipe 1213 can be installed on the bottom plate 1214. Since hot air is at the top and cool air is at the bottom, the atmosphere communication pipe 1213 is installed on the bottom plate 1214, so that the temperature of the incoming air is higher than the temperature of the outgoing air, which is conducive to maintaining the temperature in the battery temperature control box 121 within a certain range.

[0037] In another embodiment, the waste heat heating system includes a filter 6, the air inlet of the filter 6 is connected to the hot air outlet 31, and the outlet of the filter 6 is connected to the air inlet of the warm air distributor 4. By providing the filter 6, the hot air coming out of the hot air outlet 31 is cleaned and the pollution is reduced, so that the atmosphere can be protected, the battery 122 can be protected, and the equipment arranged in the driver's cab 11 and the driver sitting therein can be protected.

[0038] In a second aspect, the present application provides a refrigerated vehicle, the refrigerated vehicle comprising the waste heat heating system described above. The refrigerated vehicle has the technical advantages of the waste heat heating system, which will not be described in detail here.

[0039] In yet another embodiment, the refrigerated truck further includes a supplementary heating system, and a heating mode of the supplementary heating system adopts at least one of an oil-burning mode, an electricity-burning mode, and a heat pump mode.

[0040] By setting up a supplementary heating system, the temperature of the battery 122 and / or the driver's cab 11 can be guaranteed at a relatively low temperature, thereby ensuring that the driver in the driver's cab 11 lives in a comfortable environment. For example, when the temperature is minus 10°, the temperature of the hot air blown out from the hot air outlet 31 is about 10°, which is lower than the comfortable temperature of the human body, and is not conducive to the normal operation of the battery 122 at this temperature. Therefore, at this time, the battery 122 and the driver's cab 11 can be heated by a supplementary heating system, thereby ensuring the comfort of the driver riding in the driver's cab 11, and the battery 122 can also be kept within an ideal temperature range, ensuring the performance of the battery 122 to ensure the cruising range of the refrigerated truck. For example, when the temperature is below minus 20° or even lower, the refrigerated cargo box 2 in the refrigerated truck does not need to work, and the goods in the refrigerated cargo box 2 can be directly frozen naturally at ambient temperature. At this time, there is no hot air at the hot air outlet 31, and the battery 122 and the driver's cab 11 both need to be heated by a supplementary heating system.

[0041] It should be understood that the term "and / or" in this article 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 at the same time, and B exists alone. A and B can be singular or plural. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship, but it may also indicate an "and / or" relationship. Please refer to the context for specific understanding.

[0042] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be represented by: a, b, c, ab, ac, bc or abc, where a, b, c can be single or multiple.

[0043] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0044] The waste heat heating system described above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A waste heat heating system for heating a refrigerated truck, characterized in that: The waste heat heating system comprises a heated space (1) and a refrigeration device (3) for cooling a refrigerated cargo box (2), wherein the refrigeration device (3) has a hot air outlet (31), and the heated space (1) is connected to the hot air outlet (31); The waste heat heating system comprises a warm air distributor (4) connected to the hot air outlet (31) and the air inlet of the heated space (1); The warm air distributor (4) is provided with a plurality of dampers and a plurality of drivers, and each damper is provided with a corresponding driver to drive the damper to move; The plurality of dampers include a first damper (41) leading to the atmosphere, and the plurality of drives include a first motor (42) for controlling the movement of the first damper (41); The heated space (1) includes a driver's cab (11), the warm air distributor (4) is provided with a second damper (43) leading to the driver's cab (11), and the plurality of drives include a second motor (44) for controlling the movement of the second damper (43); The heated space (1) includes a battery area (12), the battery area (12) includes a battery temperature control box (121) and a battery (122) installed in the battery temperature control box (121), the warm air distributor (4) is provided with a third damper (45) leading to the battery area (12), and the plurality of drives include a third motor (46) for controlling the movement of the third damper (45); When the ambient temperature is within the first temperature range, the hot air blown out of the hot air outlet (31) can meet the temperature requirement of the battery area (12) and still have a surplus, and a portion of the surplus hot air is directed to the driver's cab (11); when the hot air blown out of the hot air outlet (31) can meet the heating requirements of both the driver's cab (11) and the battery area (12) but does not have a surplus, the first air door (41) is closed; When the ambient temperature is within the second temperature range, the hot air blown out from the hot air outlet (31) can simultaneously meet the temperature requirements of the driver's cab (11) and the battery area (12), and still have a surplus. At this time, the third air door (45), the second air door (43) and the first air door (41) can all be partially opened; When the ambient temperature is within the third temperature range, the hot air blown out of the hot air outlet (31) is insufficient to support heating of the driver's cab (11) and the battery area (12) at the same time. At this time, if the temperature of the battery area (12) is prioritized, the third air door (45) is fully opened, and the second air door (43) and the first air door (41) are all closed.

2. The waste heat heating system according to claim 1, characterized in that: The waste heat heating system comprises a temperature management module (5); a temperature detection device (123) and a battery management module are also installed in the battery temperature control box (121); the battery management module is capable of receiving temperature information detected by the temperature detection device (123) and transmitting the temperature information to the temperature management module (5); and the temperature management module (5) issues instructions to the multiple drivers to control the opening angle of each damper.

3. The waste heat heating system according to claim 1 or 2, characterized in that: The waste heat heating system comprises a filter (6), the air inlet of the filter (6) being connected to the hot air outlet (31), and the outlet of the filter (6) being connected to the air inlet of the hot air distributor (4).

4. A refrigerated vehicle, characterized in that: The refrigerated vehicle comprises a waste heat heating system according to any one of claims 1-3.

5. The refrigerated vehicle according to claim 4, characterized in that: The refrigerated vehicle further comprises a supplementary heating system, wherein a heating mode of the supplementary heating system adopts at least one of an oil-burning mode, an electricity-burning mode and a heat pump mode.

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