Automotive top-mounted standby power module and refrigerator car

Abstract

The invention belongs to the technical field of refrigeration, and discloses an automotive top-mounted standby power module and a refrigerator car, the automotive top-mounted standby power module comprises a frame, a power supply module, a driving module and a shell, and the frame is used for being mounted at the top of a car body; the power module is mounted on the frame; the driving module comprises a standby compressor and a gas-liquid separator, and the shell covers the power module and the driving module and is detachably connected with the frame; wherein the power supply module is horizontally arranged on the frame, the standby compressor is configured to be a horizontal inverter compressor, and the gas-liquid separator is configured to be a horizontal separator. The main components of the automotive top-mounted standby power module are all of a horizontal structure, so that the overall height of the driving module is greatly reduced while normal use of the automotive top-mounted standby power module is guaranteed, and the height limiting requirement of urban distribution of a refrigerator car is met.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, and in particular to a vehicle roof-mounted backup power module and a refrigerated vehicle. Background Art

[0002] As people pay more and more attention to food safety and the freshness of ingredients, the market share of cold chain logistics vehicles has gradually expanded, and the demand for refrigerated bread trucks for urban delivery has also increased. Since refrigerated bread trucks are delivered within the city, in order to ensure the vehicle's range, the refrigerated truck needs to use a backup power module for refrigeration during pre-cooling and waiting. Traditional backup power modules are large in size and weight and are installed on the vehicle chassis. Due to the height of the refrigerated bread truck chassis, the available installation space is extremely limited. Not only is it inconvenient to assemble, but the backup power module is also difficult to maintain when installed under the chassis; if it is installed on the top of the vehicle, it is easy for the vehicle to fail to meet the height limit requirements for urban delivery, affecting the normal use of the refrigerated bread truck. Summary of the invention

[0003] The object of the present invention is to provide a vehicle roof-mounted backup power module and a refrigerated vehicle, which have a compact structure, are simple to assemble, are convenient to maintain, and meet the height limit requirements for urban distribution.

[0004] To achieve this object, the present invention adopts the following technical scheme: a roof-mounted backup power module for a vehicle, comprising a frame, a power module, a drive module and a shell, wherein the frame is used to be installed on the top of a vehicle body; the power module is installed on the frame; the drive module is installed on the frame and is located on one side of the power module, the drive module comprises a backup compressor and a gas-liquid separator, the backup compressor is connected to the power module and is connected to the gas-liquid separator through a return air pipe; the shell is covered on the power module and the drive module and is detachably connected to the frame; wherein the power module is horizontally placed on the frame, the backup compressor is configured as a horizontal variable frequency compressor, and the gas-liquid separator is configured as a horizontal separator.

[0005] Preferably, the standby compressor is provided with a first inlet and a first outlet, the first inlet and the first outlet are respectively arranged on the side walls of the standby compressor, and the center line of the first inlet and the center line of the first outlet are both parallel to the horizontal plane; the gas-liquid separator is provided with a second inlet and a second outlet, the second inlet and the second outlet are respectively arranged on the side walls of the gas-liquid separator, and the center line of the second inlet and the center line of the second outlet are both parallel to the horizontal plane, and the second outlet is connected to the first inlet through the return air pipe.

[0006] Preferably, a first support member is provided between the standby compressor and the gas-liquid separator, the first outlet is connected to an outlet pipe, the end of the outlet pipe away from the first outlet is installed on the first support member, the frame is provided with a through groove, the through groove passes through the frame in a vertical direction and is located below the first support member; and / or, a three-way elbow is provided between the return air pipe and the second outlet, the inlet of the three-way elbow is connected to the second outlet, one outlet of the three-way elbow is connected to the return air pipe, and the other outlet is installed on the first support member.

[0007] Preferably, the frame is mounted with a second support member, the second support member is provided with a positioning hole, and one end of the three-way elbow connected to the return air pipe is passed through the positioning hole.

[0008] Preferably, the air return pipe and the air outlet pipe are arranged at intervals in the vertical direction.

[0009] Preferably, the power module includes a rectifier and a DC voltage converter, the rectifier is connected to the DC voltage converter, the DC voltage converter is connected to the standby compressor, and the outer peripheral wall of the DC voltage converter is provided with cooling fins.

[0010] Preferably, the frame is connected to a waterproof box, and the rectifier is accommodated in the waterproof box.

[0011] Preferably, the frame is provided with an upwardly folded flange portion, the flange portion is arranged around the frame, a slot is provided at the bottom end of the shell, the flange portion is snap-fitted with the slot and is bolted to the side wall of the slot.

[0012] Another object of the present invention is to provide a refrigerated vehicle, comprising a vehicle body and the above-mentioned vehicle roof-mounted backup power module, wherein the vehicle roof-mounted backup power module is installed on the top of the vehicle body.

[0013] Preferably, the refrigerated truck also includes a refrigeration system, which includes a main compressor, a top-mounted refrigeration external unit and a refrigeration internal unit. The main compressor is transmission-connected to the engine of the vehicle body, and the main compressor is respectively connected to the top-mounted refrigeration external unit and the refrigeration internal unit. The vehicle-mounted roof-mounted backup power module is respectively connected to the top-mounted refrigeration external unit and the refrigeration internal unit to form a backup refrigeration system.

[0014] The beneficial effects of the present invention are as follows: the power module and the drive module adopt a modular design and are installed on the top of the refrigerated truck. They have a compact structure and are easy to maintain. The backup compressor of the drive module is configured as a horizontal variable frequency compressor, and the gas-liquid separator is configured as a horizontal separator. The main components all adopt a horizontal structure. While ensuring the normal use of the vehicle-mounted top-mounted backup power module, the overall height of the drive module is greatly reduced, and the height of the outer casing covering the power module and the drive module is thereby reduced. After the vehicle-mounted top-mounted backup power module is installed on the top of the bread refrigerated truck, its height is less than the height of the top-mounted refrigeration external unit of the original refrigeration system, thereby meeting the height limit requirements for urban distribution of refrigerated trucks.

[0015] The present invention also provides a refrigerated truck. The power module and the drive module of the vehicle-mounted roof-mounted backup power module adopt a modular design and are installed on the top of the refrigerated truck. The structure is compact and maintenance is convenient. The backup compressor of the drive module is configured as a horizontal variable frequency compressor, and the gas-liquid separator is configured as a horizontal separator. The main components all adopt a horizontal structure. While ensuring the normal use of the vehicle-mounted roof-mounted backup power module, the overall height of the drive module is greatly reduced, and the height of the outer shell covering the power module and the drive module is further reduced. After the vehicle-mounted roof-mounted backup power module is installed on the top of the bread refrigerated truck, the height of the vehicle-mounted roof-mounted backup power module is less than the height of the roof-mounted refrigeration external unit of the original refrigeration system, thereby avoiding an increase in the height of the refrigerated truck and meeting the height limit requirements for urban distribution of refrigerated trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the vehicle roof-mounted backup power module of the present invention;

[0017] Figure 2 It is a schematic diagram of the installation of the vehicle roof-mounted backup power module of the present invention.

[0018] In the figure:

[0019] 1000. Vehicle roof-mounted backup power module;

[0020] 100, frame; 110, first support member; 120, through slot; 130, second support member; 140, flange portion;

[0021] 200, power module; 210, DC voltage converter; 211, heat sink fins; 220, waterproof box; 221, box cover;

[0022] 300, drive module; 310, standby compressor; 311, first inlet; 312, first outlet; 320, gas-liquid separator; 321, second inlet; 322, second outlet; 323, three-way elbow; 330, return air pipe; 340, outlet pipe;

[0023] 400, housing;

[0024] 2000, body;

[0025] 500, refrigeration system; 510, main compressor; 520, top-mounted refrigeration external unit; 530, refrigeration internal unit. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0030] Reference Figure 1 (housing 400 is omitted) and Figure 2 As shown, an embodiment of the present invention provides a vehicle roof-mounted backup power module 1000, comprising a frame 100, a drive module 300 and a housing 400. Optionally, the frame 100 is a high-strength aluminum alloy part, and the frame 100 is rectangular as a whole, and a power module 200 is installed on half of the rectangular frame 100.

[0031] The driving module 300 is installed on the frame 100 and is located on one side of the power module 200, that is, the driving module 300 is installed on the other half of the rectangular frame 100. The driving module 300 includes a standby compressor 310 and a gas-liquid separator 320. The standby compressor 310 is connected to the power module 200 and is connected to the gas-liquid separator 320 through a return air pipe 330. The power module 200 can convert the external mains power into a regulated power supply for the operation of the standby compressor 310.

[0032] The housing 400 matches the frame 100 . The housing 400 covers the power module 200 and the driving module 300 and is detachably connected to the frame 100 .

[0033] Among them, the power module 200 is placed horizontally on the frame 100, the standby compressor 310 is configured as a horizontal variable frequency compressor, and the gas-liquid separator 320 is configured as a horizontal separator. Specifically, the horizontal variable frequency compressor is a horizontal aluminum shell variable frequency scroll compressor, and the total height of the outer shell 400 and the frame 100 in the vertical direction (that is, the distance from the top surface of the outer shell 400 to the top surface of the refrigerated truck) is less than or equal to the height of the roof-mounted refrigeration external unit 520 of the refrigerated truck.

[0034] It can be understood that the power module 200 and the drive module 300 adopt a modular design and are respectively installed on the half side of the frame 100, which is easy to install and compact in structure. The vehicle top-mounted standby power module 1000 is installed on the top of the refrigerated truck, which is simple to assemble and easy to maintain. The standby compressor 310 of the drive module 300 is configured as a horizontal variable frequency compressor, the gas-liquid separator 320 is configured as a horizontal separator, the power module 200 is also placed horizontally on the frame 100, and the main components of the vehicle top-mounted standby power module 1000 are all horizontally structured. While ensuring the normal use of the vehicle top-mounted standby power module 1000, the overall height of the drive module 300 is greatly reduced, and then the height of the housing 400 covering the power module 200 and the drive module 300 is reduced, so that after the vehicle top-mounted standby power module 1000 is installed on the top of the bread refrigerated truck, its height is less than the height of the top-mounted refrigeration external unit 520 of the original refrigeration system 500, meeting the height limit requirements for the city distribution of refrigerated trucks.

[0035] In addition, the traditional backup power module requires a stronger iron frame 100 to be stably hoisted on the chassis, while the frame 100 of the present application is made of high-strength aluminum alloy, which can greatly reduce the weight of the backup power module and further increase the cruising range of the refrigerated bread truck. And the backup compressor 310 is configured as a horizontal aluminum shell variable frequency scroll compressor, which not only has lower operating noise, but the user can also control the backup compressor 310 through the vehicle assembly to start from zero speed or low speed, gradually increase the load, and achieve slow start. Avoid the traditional backup power module directly starting at full load, and problems such as difficulty in starting and unstable operation in areas with low or unstable voltage.

[0036] Reference Figure 1 As shown, it can be understood that the standby compressor 310 is provided with a first inlet 311 and a first outlet 312, and the first inlet 311 and the first outlet 312 are respectively arranged on the side walls of the standby compressor 310. Specifically, the first inlet 311 is arranged on the side of the standby compressor 310 away from the power module 200, and the first outlet 312 is arranged on the side of the standby compressor 310 away from the gas-liquid separator 320, and the center line of the first inlet 311 and the center line of the first outlet 312 are both parallel to the horizontal plane.

[0037] The gas-liquid separator 320 is provided with a second inlet 321 and a second outlet 322, and the second inlet 321 and the second outlet 322 are respectively arranged on the side walls of the gas-liquid separator 320. Specifically, due to the cylindrical shape of the gas-liquid separator 320, the second inlet 321 and the second outlet 322 can be respectively arranged on the two side end surfaces of the gas-liquid separator 320, and the center line of the second inlet 321 and the center line of the second outlet 322 are both parallel to the horizontal plane, and the second outlet 322 is connected to the first inlet 311 through the return air pipe 330.

[0038] The first inlet 311 and the first outlet 312 of the standby compressor 310 are horizontally arranged on the side wall of the standby compressor 310, and the second inlet 321 and the second outlet 322 of the gas-liquid separator 320 are horizontally arranged on the side wall of the gas-liquid separator 320, so as to avoid the problem of the traditional horizontal variable frequency compressor and the horizontal gas-liquid separator 320 having the inlet and outlet arranged upward or tilted upward, and the subsequent pipelines need to be connected from the top of the variable frequency compressor and the horizontal gas-liquid separator 320, which causes the height of the driving module 300 to be passively increased. The return air pipe 330 and other subsequent pipelines are connected to or taken out from the side wall of the variable frequency compressor and the horizontal gas-liquid separator 320, ensuring that the first inlet 311, the first outlet 312, the second inlet 321, the second outlet 322 and each pipeline do not affect the height of the driving module 300.

[0039] Reference Figure 1 As shown, it can be understood that the standby compressor 310 and the gas-liquid separator 320 are arranged at intervals, and a first support member 110 is provided between the standby compressor 310 and the gas-liquid separator 320. The first support member 110 is a right-angle plate installed on the frame 100. The first outlet 312 is connected to an air outlet pipe 340. The air outlet pipe 340 is connected to the first outlet 312 at a bent section. The main body of the air outlet pipe 340 is located between the standby compressor 310 and the power module 200, so that one end of the air outlet pipe 340 away from the first outlet 312 is installed on the first support member 110. The frame 100 is provided with a through groove 120, which passes through the frame 100 in a vertical direction and is located below the standby compressor 310, the support member and the gas-liquid separator 320.

[0040] The first support member 110 is installed between the standby compressor 310 and the gas-liquid separator 320 at one end of the air outlet pipe 340 away from the first outlet 312, so as to ensure that the air outlet pipe 340 is accommodated in the outer shell 400 and does not pass through the outer shell 400 to be connected to the original refrigeration system 500 of the refrigerated truck. The installation space around the standby compressor 310 and the gas-liquid separator 320 is reasonably utilized to accommodate and arrange the air outlet pipe 340, thereby effectively improving the structural tightness of the vehicle roof-mounted standby power module 1000.

[0041] By providing the through slot 120, all pipes and wiring harness connectors between the original refrigeration system 500 and the drive module 300 of the refrigerated truck can pass through the through slot 120 into the shell 400, and then connect with the drive module 300, effectively improving the appearance neatness of the vehicle roof-mounted backup power module 1000.

[0042] Preferably, the return air pipe 330 and the outlet air pipe 340 are arranged at intervals in the vertical direction, that is, one of the return air pipe 330 and the outlet air pipe 340 is located above the other. Specifically, the connection between the return air pipe 330 and the second outlet 322 is arranged to be tilted downward so that the return air pipe 330 is located below the outlet air pipe 340, or the connection between the outlet air pipe 340 and the first outlet 312 is arranged to be tilted downward so that the outlet air pipe 340 is located below the return air pipe 330.

[0043] Since the return air pipe 330 usually passes through the gap between the standby compressor 310 and the gas-liquid separator 320, and one end of the outlet pipe 340 is installed on the first support member 110 between the standby compressor 310 and the gas-liquid separator 320, the return air pipe 330 and the outlet pipe 340 are spaced apart in the vertical direction, which can avoid interference between the return air pipe 330 and the outlet pipe 340, affecting the installation and use of the drive module 300, and effectively improving the structural rationality of the drive module 300.

[0044] Continue to refer to Figure 1 As shown, it can be understood that a T-shaped three-way elbow 323 is provided between the return air pipe 330 and the second outlet 322, and the three-way elbow 323 has an inlet and two outlets. The inlet of the three-way elbow 323 is connected to the second outlet 322, one outlet of the three-way elbow 323 is connected to the return air pipe 330, and the other outlet is installed on the first support member 110 and connected to the main compressor 510 of the refrigerated truck.

[0045] By setting the three-way elbow 323, when the refrigerated truck is driving, the main compressor 510 of the refrigeration system 500 starts to inhale the refrigerant gas, and when the refrigerated truck is parked, the standby compressor 310 starts to inhale the refrigerant gas. The main compressor 510 and the standby compressor 310 share the same gas-liquid separator 320, and there is no need to separately set up a gas-liquid separator 320 that cooperates with the main compressor 510, which effectively reduces the operating cost of the refrigerated truck. In addition, the branch of the three-way elbow 323 and the air outlet pipe 340 are installed on the same first support member 110, which improves the space utilization of the drive module 300 and further improves the structural tightness of the drive module 300.

[0046] Preferably, the frame 100 is installed with a second support member 130, which is also a right-angle plate member installed on the frame 100. The second support member 130 is provided with a positioning hole, and one end of the three-way elbow 323 connected to the return air pipe 330 is passed through the positioning hole.

[0047] By providing the second support member 130 , the second support member 130 cooperates with the first support member 110 to fix the two outlets of the three-way elbow 323 , thereby effectively improving the installation stability of the three-way elbow 323 and improving the overall structural stability of the driving module 300 .

[0048] Reference Figure 1 As shown, it can be understood that the power module 200 includes a rectifier and a DC voltage converter 210 (DC-DC module), the rectifier and the DC voltage converter 210 are connected, the rectifier is used to convert high-voltage AC power into DC power, the DC voltage converter 210 is used to convert DC power into a regulated power supply that can be used by the standby compressor 310, the DC voltage converter 210 and the standby compressor 310 are connected, and the outer peripheral wall of the DC voltage converter 210 is provided with a heat dissipation fin 211. Specifically, a plurality of heat dissipation fins 211 are provided, and the heat dissipation fins 211 are arranged along the length direction of the DC voltage converter 210, and the plurality of heat dissipation fins 211 are arranged at intervals along the height direction and width direction of the DC voltage converter 210.

[0049] The rectifier and the DC voltage converter 210 are separately arranged, and heat dissipation fins 211 are arranged on the outer wall of the DC voltage converter 210 to replace the coil and fan structure used in the traditional integrated power module 200, effectively reducing the height of the power module 200 and facilitating the assembly and use of the power module 200.

[0050] It should be noted that the side walls around the outer shell 400 are provided with heat dissipation holes. The heat dissipation holes and the through grooves 120 cooperate to effectively improve the heat dissipation efficiency of the vehicle roof-mounted backup power module 1000, avoid heat accumulation inside the outer shell 400, and extend the service life of the vehicle roof-mounted backup power module 1000.

[0051] Preferably, the frame 100 is connected to a waterproof box 220 , the rectifier is accommodated in the waterproof box 220 , and a detachable box cover 221 is provided on the top of the waterproof box 220 .

[0052] Since the side walls around the housing 400 are provided with heat dissipation holes, when the refrigerated truck is operating in a rainy day or in an environment with high humidity, water vapor may enter the interior of the housing 400. By providing the waterproof box 220, the rectifier can be protected, the rectifier can be prevented from being corroded by external water vapor, and the service life of the vehicle top-mounted backup power module 1000 can be extended.

[0053] It should be added that the waterproof box 220, the DC voltage converter 210, the standby compressor 310 and the gas-liquid separator 320 are respectively bolted to the frame 100. The length direction of the waterproof box 220 is usually perpendicular to the length direction of the DC voltage converter 210, the axis direction of the standby compressor 310 is perpendicular to the axis direction of the gas-liquid separator 320, and the waterproof box 220 and the standby compressor 310 are arranged at intervals, so that the shape of the frame 100 is closer to a square and the center of gravity of the vehicle top-mounted standby power module 1000 is closer to the center of the frame 100, further improving the structural rationality and appearance aesthetics of the vehicle top-mounted standby power module 1000, and facilitating the assembly and use of the vehicle top-mounted standby power module 1000.

[0054] It is understandable that the frame 100 is provided with an upwardly folded flange portion 140, the flange portion 140 is arranged around the frame 100, and a slot is provided at the bottom end of the shell 400, and the flange portion 140 is snap-fitted with the slot and bolted to the side wall of the slot.

[0055] By providing the flange portion 140, on the one hand, the frame 100 is clamped and bolted to the outer shell 400 through the flange portion 140, which effectively improves the structural stability of the vehicle top-mounted backup power module 1000; on the other hand, the flange portion 140 is inserted into the card slot, which can further reduce the total height of the frame 100 and the outer shell 400, and cooperate with the horizontal structure of the power module 200 and the drive module 300 to achieve an ultra-thin design of the vehicle top-mounted backup power module 1000.

[0056] Reference Figure 2As shown, the present invention also provides a refrigerated vehicle, including a vehicle body 2000 and the above-mentioned vehicle roof-mounted backup power module 1000, the vehicle body 2000 is provided with a refrigeration system 500, specifically, the refrigeration system 500 includes a main compressor 510, a top-mounted refrigeration external machine 520 and a refrigeration internal machine 530, the main compressor 510 is located at the front part of the vehicle body 2000, and the main compressor 510 is transmission-connected to the engine in the vehicle body 2000, the top-mounted refrigeration external machine 520 is installed at the top of the vehicle body 2000, the refrigeration internal machine 530 is installed on the inner top surface of the compartment of the vehicle body 2000, the vehicle roof-mounted backup power module 1000 is installed at the top of the vehicle body 2000 and is located on one side of the top-mounted refrigeration external machine 520, and the vehicle roof-mounted backup power module 1000 is respectively connected to the top-mounted refrigeration external machine 520 and the refrigeration internal machine 530 to form a backup refrigeration system.

[0057] The refrigerated truck provided in the embodiment of the present invention includes the vehicle roof-mounted backup power module 1000 in the above embodiment, so the refrigerated truck provided in the embodiment of the present invention also has the beneficial effects described in the above embodiment, which will not be repeated here.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A roof-mounted backup power module for a vehicle, characterized in that: include: A frame (100) for mounting on the top of a vehicle body; A power module (200) installed on the frame (100); a driving module (300) mounted on the frame (100) and located on one side of the power module (200), the driving module (300) comprising a standby compressor (310) and a gas-liquid separator (320), the standby compressor (310) being connected to the power module (200) and connected to the gas-liquid separator (320) via a return air pipe (330); A housing (400) is disposed on the outer periphery of the power module (200) and the driving module (300) and is detachably connected to the frame (100); The power module (200) is horizontally placed on the frame (100), the standby compressor (310) is configured as a horizontal variable frequency compressor, and the gas-liquid separator (320) is configured as a horizontal separator.

2. The vehicle roof-mounted backup power module according to claim 1, characterized in that: The standby compressor (310) is provided with a first inlet (311) and a first outlet (312), the first inlet (311) and the first outlet (312) are respectively arranged on the side wall of the standby compressor (310), and the center line of the first inlet (311) and the center line of the first outlet (312) are both parallel to a horizontal plane; The gas-liquid separator (320) is provided with a second inlet (321) and a second outlet (322), the second inlet (321) and the second outlet (322) are respectively arranged on the side wall of the gas-liquid separator (320), and the center line of the second inlet (321) and the center line of the second outlet (322) are both parallel to a horizontal plane, and the second outlet (322) is connected to the first inlet (311) through the return air pipe (330).

3. The vehicle roof-mounted backup power module according to claim 2, characterized in that: A first support member (110) is provided between the standby compressor (310) and the gas-liquid separator (320); the first outlet (312) is connected to an outlet pipe (340); an end of the outlet pipe (340) away from the first outlet (312) is mounted on the first support member (110); the frame (100) is provided with a through groove (120); the through groove (120) passes through the frame (100) in a vertical direction and is located below the first support member (110); And / or, a three-way elbow (323) is provided between the return air pipe (330) and the second outlet (322), the inlet of the three-way elbow (323) is connected to the second outlet (322), one outlet of the three-way elbow (323) is connected to the return air pipe (330), and the other outlet is installed on the first support member (110).

4. The vehicle roof-mounted backup power module according to claim 3, characterized in that: The frame (100) is installed with a second support member (130), the second support member (130) is provided with a positioning hole, and one end of the three-way elbow (323) connected to the return air pipe (330) is passed through the positioning hole.

5. The vehicle roof-mounted backup power module according to claim 3, characterized in that: The air return pipe (330) and the air outlet pipe (340) are arranged at intervals in the vertical direction.

6. The vehicle roof-mounted backup power module according to any one of claims 1 to 5, characterized in that: The power module (200) comprises a rectifier and a DC voltage converter (210), the rectifier is connected to the DC voltage converter (210), the DC voltage converter (210) is connected to the standby compressor (310), and the outer peripheral wall of the DC voltage converter (210) is provided with heat dissipation fins (211).

7. The vehicle roof-mounted backup power module according to claim 6, characterized in that: The frame (100) is connected to a waterproof box (220), and the rectifier is accommodated in the waterproof box (220).

8. The vehicle roof-mounted backup power module according to any one of claims 1 to 5, characterized in that: The frame (100) is provided with a flange portion (140) folded upward, the flange portion (140) is arranged around the frame (100), a slot is provided at the bottom end of the housing (400), the flange portion (140) is snap-fitted with the slot and is bolted to the side wall of the slot.

9. A refrigerated truck, characterized in that: It comprises a vehicle body (2000) and a vehicle roof-mounted backup power module as claimed in any one of claims 1 to 8, wherein the vehicle roof-mounted backup power module is installed at the top of the vehicle body (2000).

10. The refrigerated vehicle according to claim 9, characterized in that: The refrigerated vehicle further comprises a refrigeration system (500), the refrigeration system (500) comprising a main compressor (510), a top-mounted refrigeration external machine (520) and a refrigeration internal machine (530), the main compressor (510) being transmission-connected to the engine of the vehicle body (2000), and the main compressor (510) being respectively connected to the top-mounted refrigeration external machine (520) and the refrigeration internal machine (530), and the vehicle-mounted top-mounted backup power module being respectively connected to the top-mounted refrigeration external machine (520) and the refrigeration internal machine (530) to form a backup refrigeration system.

Images