A power drive system for a transport vehicle and a transport vehicle

Abstract

The present invention relates to the field of vehicle drive technology, and specifically to a power drive system for a transport vehicle and a transport vehicle. The power drive system includes a drive device, a battery energy storage device, and a power transmission device. The drive device is arranged on the transport vehicle, and the drive device is used to provide driving force for the transport vehicle. The battery energy storage device is detachably mounted on the trailer of the transport vehicle through a connector. One end of the power transmission device is electrically connected to the drive device, and the other end of the power transmission device is electrically connected to the battery energy storage device. The battery energy storage device transmits the electric energy in the battery energy storage device to the drive device through the power transmission device. The present invention arranges the battery energy storage device on the trailer. Since the overall size of the trailer is large, the battery energy storage device can be fixedly installed without being restricted even after the overall size of the battery energy storage device is increased, thereby increasing the amount of electric energy stored in the battery energy storage device and increasing the cruising range of the transport vehicle.

Description

Technical Field

[0001] The present invention relates to the field of vehicle driving technology, and in particular to a power driving system for a transport vehicle and the transport vehicle. Background Art

[0002] As an important type of road transport, transport vehicles have the advantages of being fast, maneuverable, flexible, safe, and able to easily realize section transportation.

[0003] For the transport vehicles currently in use, when the power battery is about to run out of power, it is necessary to go to a charging station for charging. Due to the long charging time, the cargo transportation time is prolonged. In addition, for the transport vehicles currently in use, the power battery is installed on the chassis of the tractor of the transport vehicle. Due to the wheelbase limit of the tractor, the size of the power battery installed on the chassis is limited, and the stored energy cannot meet the needs of long-distance transportation. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a power drive system for a transport vehicle and a transport vehicle.

[0005] According to one aspect of the present application, a power drive system for a transportation vehicle is provided.

[0006] As an implementable scheme, the power drive system includes a drive device, a battery energy storage device and a power transmission device. The drive device is arranged on the transport vehicle, and the drive device is used to provide driving force for the transport vehicle. The battery energy storage device is detachably mounted on the trailer of the transport vehicle through a connecting piece, one end of the power transmission device is electrically connected to the drive device, and the other end of the power transmission device is electrically connected to the battery energy storage device. The battery energy storage device transmits the electrical energy in the battery energy storage device to the drive device through the power transmission device.

[0007] In one practicable solution, the drive device is arranged on a tractor of the transport vehicle.

[0008] In some feasible schemes, there are multiple battery energy storage devices, and the battery energy storage devices are connected in parallel.

[0009] In some feasible schemes, the battery energy storage device includes a shell and a battery pack, the battery pack is disposed in the shell, one end of the connector is connected to the shell of the battery energy storage device, and the other end of the connector is detachably connected to the trailer.

[0010] In some feasible schemes, the power transmission device includes a combiner box and a wiring harness assembly, one end of the combiner box is electrically connected to the battery energy storage device so that the electric energy in the battery energy storage device is gathered in the combiner box, the other end of the combiner box is electrically connected to the wiring harness assembly, and the other end of the wiring harness assembly is electrically connected to the drive device.

[0011] In some feasible solutions, the wiring harness assembly and the driving device and / or the wiring harness assembly and the junction box are detachably connected, and the junction box and the battery energy storage device are detachably connected.

[0012] In some embodiments, the wiring harness assembly includes at least one power cord.

[0013] In some feasible solutions, the power drive system of the transport vehicle further includes a guide device, and the wiring harness assembly is constrained on the guide device.

[0014] In some feasible schemes, the guide device is respectively connected to the tractor of the transport vehicle and the trailer of the transport vehicle, and the guide device is configured so that when the tractor of the transport vehicle and the trailer of the transport vehicle are dragged in a non-linear manner, the guide device drags the wiring harness assembly to adapt to the non-linear movement between the tractor of the transport vehicle and the trailer of the transport vehicle.

[0015] According to another aspect of the present application, a transport vehicle is provided, which includes a tractor, a trailer and the above-mentioned power drive system for the transport vehicle, the tractor tows the trailer for travel, the tractor is provided with a mounting seat for installing the drive device, and the trailer is provided with a connecting seat for connecting with the connecting piece.

[0016] In the present invention, a battery energy storage device is arranged on the trailer, and the power in the battery energy storage device is transmitted to the driving device through the power transmission device, so that the driving device provides driving force for the transport vehicle based on the power supply energy of the power transmission device. Since the overall size of the trailer is large, the overall size of the battery energy storage device can be increased and the fixed installation of the battery energy storage device can still be achieved without being restricted, thereby increasing the amount of electrical energy stored in the battery energy storage device and increasing the cruising range of the transport vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a general assembly diagram of the power drive system and the transport vehicle of the present invention from one angle;

[0019] Figure 2 is an assembly diagram of the power drive system and the transport vehicle of the present invention from another angle;

[0020] Figure 3 It is a structural schematic diagram of the battery energy storage device of the present invention;

[0021] In the figure, 1-driving device, 2-battery energy storage device, 21-connecting part, 22-housing, 23-battery pack, 3-power transmission device, 31-junction box, 32-wiring harness assembly, 4-guide device, 5-transport vehicle, 51-tractor, 52-trailer. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which 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, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may include one or more of the features explicitly or implicitly. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0024] According to one aspect of the present application, a power drive system for a transport vehicle is provided. The transport vehicle 5 comprises a tractor 51 and a trailer 52, wherein the tractor 51 is used to tow the trailer 52 for travel.

[0025] In one feasible solution, Figure 1 and Figure 2 As shown, the power drive system includes a drive device 1, a battery energy storage device 2 and a power transmission device 3. The drive device 1 is arranged on the transport vehicle 5, and the drive device 1 is used to provide driving force for the transport vehicle 5. The battery energy storage device 2 is detachably mounted on the trailer 52 of the transport vehicle 5 through a connector 21, one end of the power transmission device 3 is electrically connected to the drive device 1, and the other end of the power transmission device 3 is electrically connected to the battery energy storage device 2, and the battery energy storage device 2 transmits the electric energy in the battery energy storage device 2 to the drive device 1 through the power transmission device 3. By arranging the battery energy storage device 2 on the trailer 52, due to the large overall size of the trailer 52, the battery energy storage device 2 can be fixedly installed without being restricted even if the overall size of the battery energy storage device 2 is increased, thereby increasing the amount of electric energy stored in the battery energy storage device 2 and increasing the cruising range of the transport vehicle 5.

[0026] The driving device 1 serves as a whole vehicle power source of the transport vehicle 5 and provides driving force for the transport vehicle 5. Specifically, the driving device 1 can be arranged on a tractor 51 of the transport vehicle 5, or on a trailer 52 of the transport vehicle 5.

[0027] Preferably, in this embodiment, the drive device 1 is arranged on the tractor 51 of the transport vehicle 5. In an practicable solution, the drive device 1 may be provided with a mounting member for connecting with the tractor 51, and a mounting seat for installing the drive device 1 may be provided at a corresponding position on the tractor 51, and the drive device 1 is installed on the mounting seat on the tractor 51 through the mounting member. It can be understood that by providing a mounting member on the drive device 1 and correspondingly providing a mounting seat on the tractor 51, the installation of the drive device 1 relative to the tractor 51 is realized, which is only a preferred installation method of the drive device 1 given in this embodiment. In other possible implementation schemes, other mounting structures may also be provided on the drive device 1, as long as the installation connection between the drive device 1 and the tractor 51 is realized, and no specific limitation is made here. By providing the drive device 1 on the tractor 51 of the transport vehicle 5, the drive device 1 and the battery energy storage device 2 can be separately provided, and the installation space of the drive device 1 and the battery energy storage device 2 on the transport vehicle 5 can be reasonably allocated.

[0028] Preferably, the drive device 1 is configured as a generator.

[0029] The battery energy storage device 2 is used to store electrical energy to provide the driving device 1 with the electrical energy required to drive the transport vehicle 5 .

[0030] Further, such as Figure 3 As shown, the battery energy storage device 2 may include a housing 22 and a battery pack 23, wherein the battery pack 23 is accommodated in the housing 22. The battery pack 23 may be one or more. When the battery pack 23 is more than one, two adjacent battery packs 23 are connected in series or in parallel. The number of battery packs 23 may be set according to the energy storage requirements of the battery energy storage device 2, and the final size of the energy storage device may be determined based on the number of battery packs 23, so that the size of the battery energy storage device 2 is set based on the required cruising range adaptability, thereby realizing the reasonable use of the battery energy storage device 2. Avoid the battery energy storage device 2 from being too large in size, increasing the load of the transport vehicle 5 and increasing the installation complexity of the battery energy storage device 2, or avoid the battery energy storage device 2 from being too small in size, resulting in the problem of not being able to meet the cruising range.

[0031] In an practicable solution, the connector 21 may be integrally formed with the housing 22 of the battery energy storage device 2. By integrally forming the connector 21 with the housing 22 of the battery energy storage device 2, the housing 22 and the connector 21 may be formed in one process, thereby reducing the process and the process cost.

[0032] It is understandable that the integral molding of the connector 21 and the housing 22 of the battery energy storage device 2 is only a preferred embodiment. In other feasible schemes, the connector 21 can also be molded separately. For example, the connector 21 is constructed as a quick-change connector (a widely used industrial product accessory term, also called a quick connector, a quick connector, which can quickly install various configuration parts on the equipment, expand the scope of use of the equipment, save time, and improve work efficiency). In an feasible scheme, one end of the connector 21 after being separately molded is detachably connected to the battery energy storage device 2, and the other end of the connector 21 is used for detachably connecting to the trailer 52, so that the battery energy storage device 2 is connected to the trailer 52 through the connector 21. Preferably, a connecting seat is provided on the trailer 52, and the connector 21 is installed and fixed to the connecting seat on the trailer 52, so that the battery energy storage device 2 is installed and fixed to the trailer 52 through the connecting seat. It is understandable that by molding the connector 21 separately, when replacing the battery, only the battery energy storage device 2 needs to be replaced without replacing the connector 21. While improving the versatility of the connector 21, multiple battery energy storage devices 2 can use the same connector 21 in succession, saving material costs.

[0033] Preferably, the connecting member 21 is made of iron or stainless steel.

[0034] Furthermore, in an implementable solution, the battery energy storage device 2 can be one, and the specific size of the battery energy storage device 2 can be adapted to the size of the fuel tank of the transport vehicle 5, or the size of the battery energy storage device 2 can be set to be larger or smaller than the size of the fuel tank of the transport vehicle 5 to increase the energy storage capacity. The specific size can be set according to demand and is not specifically limited here.

[0035] Furthermore, in another feasible solution, the battery energy storage device 2 may also be multiple. When the battery energy storage device 2 is multiple, the battery energy storage device 2 is connected in parallel with the battery energy storage device 2. It is understandable that the specific number of battery energy storage devices 2 can be set according to the required cruising range. By setting multiple battery energy storage devices 2 according to demand, the long-distance transportation needs of the transport vehicle 5 can be met.

[0036] Furthermore, the battery energy storage device also includes a quick-change water inlet. It can be understood that the quick-change water inlet is a widely used automotive accessory product. One end of the quick-change water inlet is installed on the shell 22, and the other end of the quick-change water inlet is connected to the power battery thermal management module on the trailer 52 or the tractor 51, thereby realizing thermal management of the battery pack 23.

[0037] Furthermore, in some feasible solutions, such as Figure 1 and Figure 2 As shown, the power transmission device 3 includes a combiner box 31 and a harness assembly 32. One end of the combiner box 31 is electrically connected to the battery energy storage device 2 so that the electric energy in the battery energy storage device 2 is gathered in the combiner box 31. The other end of the combiner box 31 is electrically connected to the harness assembly 32. The other end of the harness assembly 32 is electrically connected to the drive device 1. By providing the combiner box 31, the high and low voltage harnesses of multiple parallel battery energy storage devices 2 are combined to ensure the design of the harness assembly 32.

[0038] In some feasible solutions, the junction box 31 is detachably connected to the battery energy storage device 2, the wiring harness assembly 32 can be detachably connected to the drive device 1, and after the wiring harness assembly 32 is connected to the drive device 1, the wiring harness assembly 32 and the drive device 1 are powered on, so that the wiring harness assembly 32 transmits the electric energy in the battery energy storage device 2 to the drive device 1. By detachably connecting the wiring harness assembly 32 to the drive device 1, the replacement of the power transmission device 3 and the drive device 1 can be facilitated.

[0039] In some other feasible schemes, one end of the wiring harness assembly 32 can be detachably connected to the driving device 1, and the other end of the wiring harness assembly 32 can be detachably connected to the junction box 31, so that when either the wiring harness assembly 32 or the junction box 31 is damaged and needs to be replaced, only the damaged one needs to be replaced, without replacing the entire power transmission assembly, thereby saving costs and facilitating replacement operations.

[0040] It is understandable that in other feasible schemes, only the wiring harness assembly 32 and the junction box 31 may be detachably connected, while the wiring harness assembly 32 and the driving device 1 may be fixedly connected, so as to reduce the number of connecting parts between the driving device 1 and the wiring harness assembly 32 and reduce the manufacturing cost.

[0041] In some embodiments, the wiring harness assembly 32 includes at least one power cord.

[0042] In some feasible solutions, the power drive system of the transport vehicle 5 further includes a guide device 4, and the wiring harness assembly 32 is constrained on the guide device 4. The guide device 4 is connected to the tractor 51 of the transport vehicle 5 and the trailer 52 of the transport vehicle 5, respectively, and the guide device 4 is configured so that when the tractor 51 of the transport vehicle 5 and the trailer 52 of the transport vehicle 5 are dragged in a non-linear manner, the guide device 4 drags the wiring harness assembly 32 to adapt to the non-linear motion between the tractor 51 of the transport vehicle 5 and the trailer 52 of the transport vehicle 5. By setting the guide device 4, the guide device 4 can be used to drag the wiring harness assembly 32 to follow the non-linear motion of the tractor 51 of the transport vehicle 5 relative to the trailer 52 of the transport vehicle 5, for example, when the transport vehicle 5 is turning around or turning in the process of moving forward (at this time, the tractor 51 of the transport vehicle 5 drives the trailer 52 of the transport vehicle 5 to move).

[0043] Alternatively, by setting up a guide device 4, the guide device 4 can drag the wiring harness assembly 32 to follow the non-linear movement of the trailer 52 of the transport vehicle 5 relative to the trailer 52 of the transport vehicle 5, such as turning during the reverse driving of the transport vehicle 5 (at this time, the trailer 52 of the transport vehicle 5 drives the tractor 51 of the transport vehicle 5 to travel).

[0044] According to another aspect of the present application, a transport vehicle is provided, wherein the transport vehicle 5 comprises a tractor 51, a trailer 52 and the above-mentioned power drive system for the transport vehicle, wherein the tractor 51 drags the trailer 52 for traveling, a mounting seat is provided on the tractor 51, and the mounting seat is used to realize the installation and fixation of the mounting member on the drive device 1, and a connecting seat is provided on the trailer 52, and the connecting seat is used to realize the connection and fixation of the connecting member 21 on the battery energy storage device 2.

[0045] Furthermore, in other feasible solutions, the transport vehicle 5 may further include a traction device, one end of which is connected to the tractor 51 , and the other end of which is connected to the trailer 52 .

[0046] Preferably, the traction device can be constructed as a pin shaft, a first mounting portion is provided on the tractor 51, a first positioning hole is provided on the first mounting portion, a second mounting portion is provided on the trailer 52, a second positioning hole is provided on the second mounting portion, and the pin shaft passes through the first positioning hole and the second positioning hole in sequence to realize the connection between the tractor 51 and the trailer 52, so that the tractor 51 drives the trailer 52 to travel, for example, during forward travel, or the trailer 52 drives the tractor 51 to travel, for example, during reversing.

[0047] It can be understood that the traction device is constructed as a pin shaft, and the first mounting portion is provided on the tractor 51 and the second mounting portion is provided on the trailer 52, which is only one possible implementation method for connecting the tractor 51 with the trailer 52. In other feasible schemes, other structures can also be provided, as long as the connection between the tractor 51 and the trailer 52 can be achieved, and no specific limitation is made here.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power drive system for a transport vehicle, characterized in that: The power drive system comprises a drive device (1), a power transmission device (3) and two battery energy storage devices (2); the drive device (1) is arranged on the transport vehicle (5) and is used to provide driving force for the transport vehicle (5); the battery energy storage device (2) is detachably mounted on a trailer (52) of the transport vehicle (5) via a connecting piece (21); one end of the power transmission device (3) is electrically connected to the drive device (1), and the other end of the power transmission device (3) is electrically connected to the battery energy storage device (2); The battery energy storage device (2) transmits the electric energy in the battery energy storage device (2) to the drive device (1) through the power transmission device (3); the power transmission device (3) comprises a junction box (31) and a wiring harness assembly (32); the junction box (31) is arranged between two battery energy storage devices (2); one end of the junction box (31) is electrically connected to the battery energy storage device (2) so that the electric energy in the battery energy storage device (2) is gathered in the junction box (31); the other end of the junction box (31) is connected to the wiring harness assembly (32) The wiring harness assembly (32) is electrically connected to the drive device (1); the wiring harness assembly (32) and the drive device (1) and / or the wiring harness assembly (32) and the junction box (31) are detachably connected, and the junction box (31) and the battery energy storage device (2) are detachably connected; the power drive system of the transport vehicle (5) also includes a guide device (4), the wiring harness assembly (32) is constrained on the guide device (4), and the guide device (4) and the tractor (51) of the transport vehicle (5) are connected to each other. ) and the trailer (52) of the transport vehicle (5) are respectively connected, and the end of the wiring harness assembly (32) away from the junction box (31) is arranged on the middle area of ​​the guide device (4), and the guide device (4) is arranged so that when the tractor (51) of the transport vehicle (5) and the trailer (52) of the transport vehicle (5) are dragged in a non-linear manner, the guide device (4) drags the wiring harness assembly (32) to adapt to the non-linear movement between the tractor (51) of the transport vehicle (5) and the trailer (52) of the transport vehicle (5).

2. The power drive system for a transport vehicle according to claim 1, characterized in that: The drive device (1) is arranged on a tractor (51) of the transport vehicle (5).

3. The power drive system for a transport vehicle (5) according to claim 1, characterized in that: There are multiple battery energy storage devices (2), and the battery energy storage devices (2) are connected in parallel.

4. The power drive system for a transport vehicle according to claim 1 or 3, characterized in that: The battery energy storage device (2) comprises a housing (22) and a battery pack (23), wherein the battery pack (23) is accommodated in the housing (22), one end of the connecting member (21) is connected to the housing (22) of the battery energy storage device (2), and the other end of the connecting member (21) is detachably connected to the trailer (52).

5. The power drive system for a transport vehicle according to claim 1, characterized in that: The wiring harness assembly (32) includes at least one power cord.

6. A transport vehicle, characterized in that: The transport vehicle (5) comprises a tractor (51), a trailer (52) and a power drive system for a transport vehicle according to any one of claims 1 to 5, wherein the tractor (51) tows the trailer (52) for travel, the tractor (51) is provided with a mounting seat for mounting the drive device (1), and the trailer (52) is provided with a connecting seat for connecting to the connecting member (21).

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