Auxiliary battery box structure of heavy-load electric tractor

Abstract

The utility model relates to the technical field of vehicle auxiliary driving, and discloses an auxiliary battery box structure of a heavy-load electric tractor, which comprises a bottom shell used for accommodating a battery pack, an upper shell detachably connected with the bottom shell, and a first sealing gasket mounted at the joint of the inner wall of the upper shell and the bottom shell, the flow guide channel is formed in the bottom of the bottom shell, and the flow guide channel is used for actively dissipating heat of the bottom shell; according to the utility model, the upper shell and the bottom shell are detachably connected, the first sealing gasket is arranged at the joint, and the flow guide channel is arranged at the bottom of the bottom shell, so that a relatively high protection effect can be achieved on the internal battery pack in complex environments such as high-humidity, rainy and salt spray corrosion environments of an airport, and the protection grade is improved; and the overall safety and the operation stability of the heavy-load electric aircraft tractor are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle auxiliary drive technical field, concretely is a kind of heavy load electric tractor auxiliary battery box structure. BACKGROUND

[0002] With the continuous improvement of global aviation industry's green low-carbon operation requirements, the electrification transformation of airport ground support equipment has become the industry development trend. Among them, heavy load electric aircraft tractor as an important part of airport special vehicle, mainly used for towing large commercial passenger aircraft (such as Boeing 737, Airbus A320 and above models) in the apron or hangar, its operation condition has the characteristics of heavy load, frequent start-stop, concentrated running time, high safety and reliability requirements.

[0003] Traditional aircraft tractor is mostly driven by diesel engine, which has problems such as high emission, high noise and complex maintenance, and is difficult to meet the environmental protection and operation standards of modern green airport. In recent years, pure electric tractor with large capacity power battery as power source gradually replaces internal combustion engine type and becomes the mainstream development direction. Such electric tractor is usually equipped with high-voltage main drive battery system (voltage platform is mostly 400V or 800V) to provide high-power output required for traction, and an independent low-voltage auxiliary battery system is also configured to supply power to key low-voltage electrical equipment such as vehicle controller, steering assist, lighting, communication, instrument and safety interlock.

[0004] However, in the prior art, the auxiliary battery system mostly uses 12V or 24V lead-acid battery scheme of ordinary commercial vehicle, and the battery box structure design is relatively simple, and the following problems are generally existed: insufficient protection level, easy to cause short circuit or performance attenuation in complex environment such as high humidity, rain and salt fog corrosion in airport; and weak heat dissipation capacity, the service life of auxiliary battery is significantly shortened under long-term high temperature working condition.

[0005] Especially for heavy load electric aircraft tractor, the reliability requirement of auxiliary power supply system is much higher than that of ordinary logistics vehicle - once the auxiliary battery fails, it may cause the vehicle control system to lose power, steering to fail and even traction to interrupt, which seriously threatens the safety of aircraft and personnel. Therefore, it is urgent to develop an auxiliary battery box structure with reasonable structure, reliable protection, high integration and adaptation to special operating environment of airport, so as to improve the overall safety and operation stability of heavy load electric aircraft tractor. INVENTION CONTENTS

[0006] The utility model provides a kind of heavy load electric tractor auxiliary battery box structure, by the detachable connection of upper shell and bottom shell and the installation of first sealing pad at joint, can improve protection level, and bottom shell bottom is provided with flow guide passage, can improve heat dissipation capacity, solve the problem of insufficient protection level and weak heat dissipation capacity mentioned in the above background art.

[0007] The utility model provides the following technical scheme:

[0008] A heavy load electric tractor auxiliary battery box structure, including the bottom shell for containing battery package, the bottom shell one end is equipped with the power connection panel, still include: the upper shell, the upper shell with the bottom shell detachable connection, and the upper shell inner wall with bottom shell junction installs first sealing gasket, the flow channel, the flow channel is established at bottom shell bottom, the flow channel is used for to the bottom shell initiative heat dissipation.

[0009] As a preferred technical scheme of the utility model, the bottom shell includes a bottom plate, both ends of the bottom plate are integrally formed with end plates, the top of the bottom plate and the inner walls of the end plates and the inner wall of the upper shell form a mounting space for mounting the battery pack, and the power connection panel is mounted on one of the end plates, and the flow channel is formed in the bottom of the bottom plate.

[0010] As a preferred technical scheme of the utility model, the upper shell is in U-shaped structure in cross section, and the upper shell is detachably connected with the bottom shell through the first screw passing through the first sealing gasket.

[0011] As a preferred technical scheme of the utility model, the power connection panel is detachably connected with one of the end plates through the third screw, and the second sealing gasket is mounted between the inner wall of the power connection panel and the outer wall of one of the end plates.

[0012] As a preferred technical scheme of the utility model, the bottom plate is provided with a mounting groove at the bottom, and a water channel cover plate is detachably connected in the mounting groove through the second screw, and the flow channel is located in the mounting groove.

[0013] As a preferred technical scheme of the utility model, a sealing groove is formed in the mounting groove, a sealing ring is mounted in the sealing groove, and the end surface of the sealing ring extending out of the sealing groove abuts against the inner wall of the water channel cover plate.

[0014] As a preferred technical scheme of the utility model, a heat dissipation cavity is formed in the mounting groove, a first baffle and a second baffle are fixedly connected in the heat dissipation cavity, the first baffle is in a serpentine structure, the second baffle is in a straight strip structure, and the first baffle and the second baffle form a continuous flow channel in the heat dissipation cavity.

[0015] As a preferred technical scheme of the utility model, the bottom shell is provided with a first pipe and a second pipe at one end, and the flow channel is in communication with the first pipe and the second pipe at both ends.

[0016] Compared with the prior art, the utility model provides a heavy load electric tractor auxiliary battery box structure, which has the following beneficial effects:

[0017] 1. The auxiliary battery box structure of the heavy-duty electric towing vehicle, the upper shell in U-shaped structure is fixed on the bottom shell by the first screw, which is convenient to assemble and disassemble, improves the maintenance efficiency of the internal battery pack, and the first sealing gasket is installed between the upper shell and the bottom shell, which can improve the sealing effect between the upper shell and the bottom shell, and the internal battery pack can also have high protection effect in the complex environment of high humidity, heavy rain, salt spray corrosion and the like in the airport.

[0018] 2. The auxiliary battery box structure of the heavy-duty electric towing vehicle, the bottom shell is provided with a flow guide channel, cooling water is introduced into the flow guide channel during long-term high-temperature working condition, which can improve the heat dissipation capacity of the bottom shell and help to improve the service life of the battery, and the flow guide channel can completely isolate the cooling water from the battery pack, which can improve the use safety while ensuring the heat dissipation effect.

[0019] The parts not involved in the device are the same as or can be realized by the prior art, the upper shell and the bottom shell are detachably connected, the first sealing gasket is installed at the joint, the flow guide channel is formed at the bottom of the bottom shell, the internal battery pack can also have high protection effect in the complex environment of high humidity, heavy rain, salt spray corrosion and the like in the airport, the protection level is improved, and the overall safety and operation stability of the heavy-duty electric aircraft towing vehicle are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn according to the actual proportion.

[0021] Figure 1 It is a first perspective view of the present application.

[0022] Figure 2 It is a second perspective view of the present application.

[0023] Figure 3 It is an explosion schematic view of the present application.

[0024] Figure 4 It is a flow guide channel schematic view of the present application.

[0025] In the drawing: 1, bottom plate; 101, end plate; 102, mounting groove; 103, sealing groove; 104, heat dissipation cavity; 105, first blocking strip; 106, first pipeline; 107, second pipeline; 2, upper shell; 3, first sealing gasket; 4, waterway cover plate; 5, power connection panel; 6, second sealing gasket; 7, sealing ring. DETAILED DESCRIPTION

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] Embodiment

[0028] With reference to Figures 1-4 The auxiliary battery box structure of the heavy-duty electric tractor includes a bottom shell for accommodating a battery pack, a power connection panel 5 is installed at one end of the bottom shell, a waterproof connector is fixedly connected to the power connection panel 5, and the waterproof connector is used for connecting a power supply and transmitting an output signal of a temperature sensor. The auxiliary battery box structure further includes an upper shell 2, the upper shell 2 is detachably connected to the bottom shell, a first sealing gasket 3 is installed at a connecting position between the inner wall of the upper shell 2 and the bottom shell, and the material of the upper shell 2 and the bottom shell is preferably aluminum alloy. On the one hand, the aluminum alloy can be mass-produced through die casting and machining, and on the other hand, the aluminum alloy has high strength and can improve the protection effect on the battery pack. In use, after the battery pack is fixed in the bottom shell through bolts, the upper shell 2 is installed on the bottom shell, and the first sealing gasket 3 is installed at the connecting position, so that the sealing effect between the upper shell 2 and the bottom shell is improved, and the battery pack inside can be well protected in a complex environment such as high humidity, heavy rain, salt spray corrosion, etc. in an airport. In the specific use process, the battery box structure composed of the upper shell 2 and the bottom shell is installed in a specific installation position inside the longitudinal beam of the tractor frame, behind the cab or in the front cabin through bolts, and the structure design takes into account the compactness, vibration isolation and quick maintenance. The battery box is used for accommodating a low-voltage auxiliary storage battery, and provides a stable power supply for key auxiliary equipment such as a vehicle controller (VCU), an electric steering system, a brake assist unit, an illumination system and a safety interlock device. The flow guide channel is arranged at the bottom of the bottom shell, and is used for actively cooling the bottom shell. In use, the flow guide channel is arranged at the bottom of the bottom shell, and cooling water is introduced into the flow guide channel during long-term high-temperature working conditions, so as to improve the heat dissipation capacity of the bottom shell and help to improve the service life of the battery.

[0029] Here, the bottom shell includes a bottom plate 1, both ends of the bottom plate 1 are integrally formed with end plates 101, the end plates 101 are approximately U-shaped structures, at this time, a mounting space for mounting the battery pack is formed by the top of the bottom plate 1, the inner walls of the end plates 101 and the inner walls of the upper shell 2, the battery pack is bolted in the mounting space, and the battery pack is fixed with an insulating plate around the battery pack for insulation between the outer wall of the battery pack and the bottom shell and the upper shell 2. And the power connection panel 5 is installed on one of the end plates 101, the flow guide channel is opened at the bottom of the bottom plate 1, the end plates 101 are integrally formed at both ends of the bottom plate 1, and the flow guide channel is opened at the bottom of the bottom plate 1 to completely isolate the cooling water from the battery pack, while ensuring the heat dissipation effect, improving the safety in use, and the structure is simple, reasonable and high in integration, which can improve the overall safety and operation stability of the heavy-duty electric airplane tractor.

[0030] Specifically, the cross section of the upper shell 2 is U-shaped, and the upper shell 2 is detachably connected with the bottom shell by the first screw passing through the first sealing gasket 3. In use, first place the first sealing gasket 3 at the position of the bottom shell for mounting the upper shell 2, then cover the upper shell 2 on the first sealing gasket 3, corresponding threaded holes are opened on the side walls and end plates 101 of the bottom plate 1, corresponding through holes are opened on the upper shell 2 and the first sealing gasket 3, and the first screw is screwed through the through hole and the corresponding threaded hole to fix the upper shell 2 on the bottom shell, which is simple to install and reliable to fix.

[0031] The power connection panel 5 is detachably connected with one of the end plates 101 by the third screw, and the second sealing gasket 6 is installed between the inner wall of the power connection panel 5 and the outer wall of one of the end plates 101. By detachably connecting the power connection panel 5 with the end plate 101 by the third screw, it is flexible to assemble and disassemble, which is convenient for subsequent maintenance, and the second sealing gasket 6 installed between the power connection panel 5 and the end plate 101 can improve the sealing effect between the power connection panel 5 and the end plate 101.

[0032] An installation groove 102 is opened at the bottom of the bottom plate 1, the flow guide channel is located in the installation groove 102, and the waterway cover plate 4 is detachably connected in the installation groove 102 by the second screw. In addition, a sealing groove 103 is opened in the installation groove 102, and a sealing ring 7 is installed in the sealing groove 103. The materials of the first sealing gasket 3, the second sealing gasket 6 and the sealing ring 7 are preferably silicone rubber. The end face of the sealing ring 7 extending out of the sealing groove 103 abuts against the inner wall of the waterway cover plate 4. In use, the installation groove 102 is opened at the bottom of the bottom plate 1, the flow guide channel is opened in the installation groove 102, and the waterway cover plate 4 and the sealing ring 7 are used in the installation groove 102, which is convenient for maintenance and cleaning of the flow guide channel.

[0033] Specifically, the heat dissipation cavity 104 is arranged in the installation groove 102, the wall thickness between the top of the bottom plate 1 and the inner top of the heat dissipation cavity 104 ranges from 3mm to 10mm, preferably 5mm, the first baffle 105 and the second baffle are fixedly connected in the heat dissipation cavity 104, the first baffle 105 is in a serpentine structure, the second baffle is in a straight strip structure, the first baffle 105 and the second baffle form a continuous flow channel in the heat dissipation cavity 104, the first baffle 105 and the second baffle can guide the cooling water entering the flow channel while ensuring the strength of the bottom plate 1, and the heat dissipation effect is improved. Furthermore, the first pipeline 106 and the second pipeline 107 are arranged at one end of the bottom shell, the flow channel is communicated with the first pipeline 106 and the second pipeline 107 at two ends respectively, in use, the cooling water pipe is connected to the first pipeline 106, and the backwater pipe is connected with the second pipeline 107, so that the continuous flow of the cooling water is realized, and the use effect is improved.

[0034] Components not described in detail herein are prior art.

[0035] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A heavy-duty electric tractor auxiliary battery box structure comprising a bottom case for accommodating a battery pack, an electrical connection panel (5) being mounted at one end of the bottom case, characterized in that, Also include: The upper shell (2) is detachably connected with the bottom shell, and the inner wall of the upper shell (2) is connected with the bottom shell, and the first sealing gasket (3) is installed at the connection; The flow guide channel is arranged at the bottom of the bottom shell, and the flow guide channel is used for actively cooling the bottom shell; The bottom shell includes a bottom plate (1), both ends of the bottom plate (1) are integrally formed with an end plate (101), the top of the bottom plate (1) and the inner wall of the end plate (101) and the inner wall of the upper shell (2) form an installation space for installing the battery pack, and the power connection panel (5) is installed on one of the end plates (101), and the flow guide channel is arranged at the bottom of the bottom plate (1); The bottom plate (1) is provided with an installation groove (102) at the bottom, and the waterway cover plate (4) is detachably connected in the installation groove (102) by a second screw, and the flow guide channel is located in the installation groove (102); The sealing groove (103) is arranged in the installation groove (102), the sealing ring (7) is installed in the sealing groove (103), and the end surface of the sealing ring (7) extending out of the sealing groove (103) abuts against the inner wall of the waterway cover plate (4); The installation groove (102) is provided with a heat dissipation cavity (104), and the first and second blocking strips are fixedly connected in the heat dissipation cavity (104), the first blocking strip (105) is in a serpentine structure, the second blocking strip is in a straight strip structure, and the first and second blocking strips form a continuous flow guide channel in the heat dissipation cavity (104).

2. The auxiliary battery box structure for a heavy electric tugger train according to claim 1, characterized by, The cross section of the upper shell (2) is in a U-shaped structure, and the upper shell (2) is detachably connected with the bottom shell by the first screw passing through the first sealing gasket (3).

3. The auxiliary battery box structure of a heavy-duty electric tugger-typer as set forth in claim 1, wherein The power connection panel (5) is detachably connected with one of the end plates (101) by a third screw, and the second sealing gasket (6) is installed between the inner wall of the power connection panel (5) and the outer wall of one of the end plates (101).

4. The auxiliary battery box structure of a heavy electric tugger train according to claim 1 or 3, characterized in that, The bottom shell is provided with a first pipe (106) and a second pipe (107) at one end, and the flow guide channel is communicated with the first pipe (106) and the second pipe (107) at both ends.

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