Primary-secondary transport vehicle system

Abstract

The utility model discloses a primary-secondary transport vehicle system. The primary-secondary transport vehicle system comprises a primary vehicle, a secondary vehicle and a connecting cable. The primary vehicle is provided with a primary vehicle battery and a primary vehicle walking mechanism, the primary vehicle battery is electrically connected with the primary vehicle walking mechanism, the secondary vehicle is provided with a secondary vehicle battery and a secondary vehicle walking mechanism, the secondary vehicle battery is electrically connected with the secondary vehicle walking mechanism, the secondary vehicle can be loaded on the primary vehicle, and the two ends of a connecting cable can be connected with the primary vehicle and the secondary vehicle respectively. And the secondary vehicle battery is electrically connected to the primary vehicle walking mechanism. When the mother vehicle transports the son vehicle, the son vehicle battery and the mother vehicle battery can be connected through the connecting cable, when the electric quantity of the mother vehicle battery is exhausted, the son vehicle battery can be switched to continuously supply power to the mother vehicle traveling mechanism, and the traveling mileage is prolonged by fully utilizing the batteries of the two vehicles.

Description

Technical Field

[0001] This utility model relates to the field of transport vehicle technology, and more specifically, to a mother-daughter transport vehicle system. Background Technology

[0002] In existing mother-daughter transport vehicles, the daughter vehicle and the mother vehicle typically transport goods separately. After completing the transport, the mother vehicle and the daughter vehicle return together. This method can solve the problem of combined energy consumption and toll fees for the return trip of the two vehicles. However, in the current technical solution, the battery power of the daughter vehicle and the mother vehicle cannot be shared, which requires the mother vehicle to be frequently recharged during transportation, which is not conducive to improving transportation efficiency. Utility Model Content

[0003] To address one of the aforementioned technical deficiencies, this application provides a mother-daughter transport vehicle system.

[0004] The technical solution adopted in this application is as follows:

[0005] A mother-daughter transport vehicle system, comprising:

[0006] A mother vehicle, the mother vehicle having a mother vehicle battery and a mother vehicle running mechanism, the mother vehicle battery and the mother vehicle running mechanism being electrically connected;

[0007] The subcar has a subcar battery and a subcar running mechanism, the subcar battery and the subcar running mechanism are electrically connected, and the subcar can be loaded onto the mother car;

[0008] A connecting cable, the two ends of which can be connected to the mother vehicle and the daughter vehicle respectively, so as to electrically connect the daughter vehicle battery to the mother vehicle's running mechanism.

[0009] Optionally, the connecting cable is detachably connected to at least one of the mother vehicle and the daughter vehicle.

[0010] Optionally, the mother vehicle has a mother vehicle circuit assembly, and the mother vehicle battery and the mother vehicle running mechanism are connected through the mother vehicle circuit assembly;

[0011] The vehicle has a vehicle circuit assembly, and the vehicle battery and the vehicle running mechanism are connected through the vehicle circuit assembly.

[0012] The two ends of the connecting cable can be connected to the mother vehicle circuit assembly and the daughter vehicle circuit assembly, respectively.

[0013] Optionally, the vehicle circuit assembly includes a vehicle PDU module, the connecting cable is connected to the vehicle PDU module, and the vehicle PDU module is used to control the vehicle battery to be electrically connected to one of the vehicle running mechanism and the connecting cable;

[0014] The mother vehicle circuit assembly includes a mother vehicle PDU module, and the connecting cable is connected to the mother vehicle PDU module. The mother vehicle PDU module is used to control the mother vehicle traveling mechanism to be electrically connected to one of the mother vehicle battery and the connecting cable.

[0015] Optionally, the sub-vehicle PDU module has a first main road and a first auxiliary road connected in parallel. The first main road is used to connect the sub-vehicle battery and the sub-vehicle running mechanism. The first main road has a first main road switch, and the first auxiliary road has a first auxiliary road switch.

[0016] The mother vehicle PDU module has a second main circuit and a second auxiliary circuit connected in parallel. The second main circuit is used to connect the mother vehicle battery and the mother vehicle running mechanism. The second main circuit has a second main circuit switch, and the second auxiliary circuit has a second auxiliary circuit switch.

[0017] The two ends of the connecting cable are respectively connected to the first auxiliary road and the second auxiliary road.

[0018] Optionally, the vehicle has a vehicle VCU, which is electrically connected to the first main switch and the first auxiliary switch, and is used to control the on / off state of the first main switch and the first auxiliary switch respectively.

[0019] The mother car has a mother car VCU, which is electrically connected to the second main switch and the second auxiliary switch, respectively, and is used to control the on and off of the second main switch and the second auxiliary switch.

[0020] Optionally, the connecting cable includes a power cable and a signal cable;

[0021] Both the daughter vehicle PDU module and the mother vehicle PDU module have power interfaces and signal interfaces;

[0022] The two ends of the power cable are electrically connected to the power interfaces of the daughter vehicle PDU module and the mother vehicle PDU module, respectively, and the two ends of the signal cable are electrically connected to the signal interfaces of the daughter vehicle PDU module and the mother vehicle PDU module, respectively.

[0023] Optionally, both the daughter vehicle and the mother vehicle have a frame and a battery base mounted on the frame, the battery base being used to support the mother vehicle battery or the daughter vehicle battery;

[0024] The PDU module of the sub-vehicle is mounted on the battery base or frame of the sub-vehicle;

[0025] The mother vehicle PDU module is mounted on the battery base or frame of the mother vehicle.

[0026] Optionally, the sub-vehicle PDU module is disposed at the bottom of the battery tray of the sub-vehicle;

[0027] The PDU module of the mother vehicle is located at the bottom of the battery tray of the mother vehicle.

[0028] Optionally, the mother-daughter transport system includes a wire harness restrainer;

[0029] The harness restraint is mounted on the chassis of the mother vehicle and is used to secure the connecting cable.

[0030] By adopting the above technical solution, this application has the following beneficial effects:

[0031] When the mother car is transporting the daughter car, the batteries of the mother and daughter cars can be connected by a connecting cable. When the mother car battery is depleted, the power can be switched to the daughter car battery to continue to power the mother car's running mechanism, making full use of the batteries of both cars to extend the driving range.

[0032] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0033] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0034] Figure 1 This diagram illustrates the state of the child vehicle being positioned on the mother vehicle in the mother vehicle system provided in an embodiment of this disclosure.

[0035] Figure 2 This diagram illustrates the coordination of the child vehicle, the mother vehicle, and the connecting cables in the mother-daughter transport vehicle system provided in this embodiment of the present disclosure.

[0036] Figure 3 A schematic diagram of the structure of the mother vehicle PDU module installed on the undercarriage of the mother-daughter transport vehicle system provided in the embodiments of this disclosure is shown.

[0037] In the diagram: 1. Mother car; 11. Mother car battery; 12. Mother car running mechanism; 13. Mother car PDU module; 131. Second main circuit switch; 132. Second auxiliary circuit switch; 2. Sub-car; 21. Sub-car battery; 22. Sub-car running mechanism; 23. Sub-car PDU module; 231. First main circuit switch; 232. First auxiliary circuit switch; 3. Connecting cables; a. Low-voltage circuit; b. Frame; c. Base; c1. Electrical connector.

[0038] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] See Figures 1 to 3 As shown in the illustration, this application provides a mother-daughter transport vehicle system, including: a mother vehicle 1, a daughter vehicle 2, and a connecting cable 3. The mother vehicle 1 has a mother vehicle battery 11 and a mother vehicle running mechanism 12, which are electrically connected. The daughter vehicle 2 has a daughter vehicle battery 21 and a daughter vehicle running mechanism 22, which are also electrically connected. The daughter vehicle 2 can be mounted on the mother vehicle 1. The two ends of the connecting cable 3 can be connected to the mother vehicle 1 and the daughter vehicle 2 respectively, so as to electrically connect the daughter vehicle battery 21 to the mother vehicle running mechanism. The running mechanisms of both the daughter vehicle 2 and the mother vehicle 1 may each include a motor and wheels, with the motor and wheels being drive-driven to rotate the wheels.

[0043] When the mother car 1 is transporting the daughter car 2, the mother and daughter car batteries 11 can be connected by the connecting cable 3. When the mother car battery 11 is depleted, the daughter car battery 21 can be switched to continue supplying power to the mother car's walking mechanism 12, making full use of the batteries of both cars to extend the driving range.

[0044] In some possible implementations, the connecting cable 3 is detachably connected to at least one of the mother car 1 and the daughter car 2. The connecting cable 3 can remain permanently connected to either the daughter car 2 or the mother car 1, while being detachably connected to the other. Alternatively, the connecting cable 3 can be detachably connected at both ends to both the mother car 1 and the daughter car 2, facilitating disassembly and storage. The end of the connecting cable 3 can be equipped with a quick-connect plug, which mates with either the daughter car 2 or the mother car 1 for convenient wiring.

[0045] In some possible implementations, the mother vehicle 1 has a mother vehicle circuit assembly, the mother vehicle battery 11 and the mother vehicle running mechanism 12 are connected through the mother vehicle circuit assembly, the daughter vehicle 2 has a daughter vehicle circuit assembly, the daughter vehicle battery 21 and the daughter vehicle running mechanism 22 are connected through the daughter vehicle circuit assembly, and the two ends of the connecting cable 3 can be connected to the mother vehicle circuit assembly and the daughter vehicle circuit assembly respectively.

[0046] In some possible implementations, the sub-vehicle circuit assembly has a sub-vehicle PDU module 23, the connecting cable 3 is connected to the sub-vehicle PDU module 23, the sub-vehicle PDU module 23 is used to control the electrical connection between the sub-vehicle battery 21 and one of the sub-vehicle running mechanism 22 and the connecting cable 3, and the mother vehicle circuit assembly has a mother vehicle PDU module 13, the connecting cable 3 is connected to the mother vehicle PDU module 13, the mother vehicle PDU module 13 is used to control the electrical connection between the mother vehicle running mechanism 12 and one of the mother vehicle battery 11 and the connecting cable 3.

[0047] The connection between the sub-vehicle battery 21 and the mother vehicle's PDU module 13 can be switched to the mother vehicle's running gear 12, or the connection between the sub-vehicle battery 21 and the mother vehicle's running gear 12 can be switched, controlling the sub-vehicle battery 21 to only connect to the sub-vehicle running gear 22. This application provides a power interface for the connecting cable 3 by setting PDU modules in the sub-vehicle and mother vehicle circuit assemblies, and the PDU modules contain a switch module that can automatically control the switching circuit, facilitating rapid switching of power supply modes.

[0048] In some possible implementations, the daughter vehicle PDU module 23 has a first main road and a first auxiliary road connected in parallel. The first main road is used to connect the daughter vehicle battery 21 and the daughter vehicle running mechanism 22. The first main road has a first main road switch 231, and the first auxiliary road has a first auxiliary road switch 232. The mother vehicle PDU module 13 has a second main road and a second auxiliary road connected in parallel. The second main road is used to connect the mother vehicle battery 11 and the mother vehicle running mechanism 12. The second main road has a second main road switch 131, and the second auxiliary road has a second auxiliary road switch 132. The two ends of the connecting cable 3 are respectively connected to the first auxiliary road and the second auxiliary road.

[0049] When the slave vehicle 2 is located on the mother vehicle 1, and the connecting cables 3 are connected to the first auxiliary circuit and the second auxiliary circuit respectively, when the slave vehicle 2 needs to supply power to the mother vehicle 1, the first auxiliary circuit switch 232 of the slave vehicle PDU module 23 can be opened, and the second auxiliary circuit switch 132 of the mother vehicle PDU module 13 can be opened, connecting the slave vehicle battery 21 to the mother vehicle circuit assembly of the mother vehicle 1. By controlling the second main circuit switch 131 to close, the slave vehicle battery 21 can supply power to the drive mechanism of the mother vehicle 1. When the slave vehicle 2 does not need to supply power to the mother vehicle 1, the first auxiliary circuit switch 232 and the second auxiliary circuit switch 132 can be opened.

[0050] It should be noted that the vehicle 2 has a vehicle VCU, which is electrically connected to the first main switch 231 and the first auxiliary switch 232. The VCU is used to control the on / off state of the first main switch and the first auxiliary switch respectively. The driver can directly control the on / off state of the first main switch 231 and the first auxiliary switch 232 from the cab of the vehicle 2.

[0051] Similarly, the mother car 1 has a mother car VCU, which is electrically connected to the second main switch 131 and the second auxiliary switch 132, respectively, and is used to control the on / off state of the second main switch and the second auxiliary switch. The driver can directly control the on / off state of the second main switch 131 and the second auxiliary switch 132 from the driver's cab of the mother car 1.

[0052] In some possible implementations, the connecting cable 3 has a power cable and a signal cable, and both the daughter vehicle PDU module 23 and the mother vehicle PDU module 13 have a power interface and a signal interface. The two ends of the power cable are electrically connected to the power interfaces of the daughter vehicle PDU module 23 and the mother vehicle PDU module 13, respectively, and the two ends of the signal cable are electrically connected to the signal interfaces of the daughter vehicle PDU module 23 and the mother vehicle PDU module 13, respectively.

[0053] In the above description, the first main circuit, the first auxiliary circuit, the second main circuit, and the second auxiliary circuit are all high-voltage circuits. These high-voltage circuits connect to the power interface to output high-voltage electricity. The PDU modules of both the daughter car 2 and the mother car 1 also have a low-voltage circuit a. Low-voltage circuit a connects to the BMU of the daughter car battery 21 and to the signal interface. When the signal interfaces of the daughter car PDU module 23 and the mother car PDU module 13 are connected via the signal cable of the connecting cable 3, the BMU of the daughter car battery 21 can be connected to the VCU of the mother car 1. The mother car VCU can then directly control the discharge of the daughter car battery 21 in the daughter car 2. Simultaneously, low-voltage circuit a can also control the on / off states of each main circuit switch and auxiliary circuit switch, allowing the mother car battery 11 or the daughter car battery 21 to be switched on and off on the mother car 1.

[0054] In some possible implementations, both the sub-vehicle 2 and the mother vehicle 1 have a frame b and a battery tray c disposed on the frame b. The battery tray c is used to support the mother vehicle battery 11 or the sub-vehicle battery 21. The sub-vehicle PDU module 23 is disposed on the battery tray c or the frame b of the sub-vehicle 2, and the mother vehicle PDU module 13 is disposed on the battery tray c or the frame b of the mother vehicle 1.

[0055] For example, see Figure 3 As shown, the daughter vehicle PDU module is located at the bottom of the battery tray c of the daughter vehicle 2, and the mother vehicle PDU module 13 is located at the bottom of the battery tray c of the mother vehicle 1. The bottom of the battery tray c has installation space, which facilitates the installation of the PDU module.

[0056] An electrical connector c1 is provided on the battery base c. When the battery is installed in the battery base c, the electrical connector c1 connects to the battery. The electrical connector c1 may be part of a circuit assembly.

[0057] In some possible implementations, the mother-daughter transport vehicle system includes a wiring harness restraint, which can be mounted on the frame b of the mother vehicle 1. The wiring harness restraint is used to secure the connecting cable 3. The wiring harness restraint may include a collar and a connecting portion, the connecting portion being connected to the collar and to the frame b of the mother vehicle 1. The collar can be fitted onto the connecting cable 3 to support and secure it, preventing the connecting cable 3 from slipping off and causing it to detach from the PDU module.

[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A mother-daughter transport vehicle system, characterized in that The application relates to a vehicle system, comprising: a mother vehicle, which has a mother vehicle battery and a mother vehicle running mechanism, and the mother vehicle battery and the mother vehicle running mechanism are electrically connected; a child vehicle, which has a child vehicle battery and a child vehicle running mechanism, and the child vehicle battery and the child vehicle running mechanism are electrically connected, and the child vehicle can be loaded on the mother vehicle; a connecting cable, which has two ends that can be connected to the mother vehicle and the child vehicle respectively, so as to electrically connect the child vehicle battery to the mother vehicle running mechanism.

2. The junior-senior transporter system of claim 1, wherein, The connecting cable is detachably connected to at least one of the mother vehicle and the child vehicle.

3. The junior-senior transporter system of claim 1, wherein, The mother vehicle has a mother vehicle circuit assembly, and the mother vehicle battery and the mother vehicle running mechanism are connected through the mother vehicle circuit assembly. The child vehicle has a child vehicle circuit assembly, and the child vehicle battery and the child vehicle running mechanism are connected through the child vehicle circuit assembly. The two ends of the connecting cable can be connected to the mother vehicle circuit assembly and the child vehicle circuit assembly respectively.

4. The junior-senior transporter system of claim 3, wherein, The child vehicle circuit assembly has a child vehicle PDU module, and the connecting cable is connected to the child vehicle PDU module, and the child vehicle PDU module is used for controlling the child vehicle battery to be electrically connected to one of the child vehicle running mechanism and the connecting cable. The mother vehicle circuit assembly has a mother vehicle PDU module, and the connecting cable is connected to the mother vehicle PDU module, and the mother vehicle PDU module is used for controlling the mother vehicle running mechanism to be electrically connected to one of the mother vehicle battery and the connecting cable.

5. The junior-senior transporter system of claim 3, wherein, The child vehicle PDU module has a first main path and a first auxiliary path in parallel, the first main path is used for connecting the child vehicle battery and the child vehicle running mechanism, the first main path has a first main path switch, and the first auxiliary path has a first auxiliary path switch. The mother vehicle PDU module has a second main path and a second auxiliary path in parallel, the second main path is used for connecting the mother vehicle battery and the mother vehicle running mechanism, the second main path has a second main path switch, and the second auxiliary path has a second auxiliary path switch. The two ends of the connecting cable are connected to the first auxiliary path and the second auxiliary path respectively.

6. The junior-senior transporter system of claim 5, wherein, The child vehicle has a child vehicle VCU, which is electrically connected to the first main path switch and the first auxiliary path switch, and is used for controlling the on-off of the first main path switch and the first auxiliary path switch respectively. The mother vehicle has a mother vehicle VCU, which is electrically connected to the second main path switch and the second auxiliary path switch respectively, and is used for controlling the on-off of the second main path switch and the second auxiliary path switch respectively.

7. The junior-senior transporter system of claim 4, wherein, The connecting cable has a power cable and a signal cable. The child vehicle PDU module and the mother vehicle PDU module both have a power electrical interface and a signal interface. The two ends of the power cable are electrically connected to the power electrical interfaces of the child vehicle PDU module and the mother vehicle PDU module respectively, and the two ends of the signal cable are electrically connected to the signal interfaces of the child vehicle PDU module and the mother vehicle PDU module respectively.

8. The junior-senior transporter system of claim 4, wherein, The child vehicle and the mother vehicle both have a vehicle frame and a battery bottom support arranged on the vehicle frame, and the battery bottom support is used for carrying the mother vehicle battery or the child vehicle battery. The child vehicle PDU module is arranged on the battery bottom support or the vehicle frame of the child vehicle. The mother vehicle PDU module is arranged on the battery bottom support or the vehicle frame of the mother vehicle.

9. The junior-senior transporter system of claim 8, wherein, The child vehicle PDU module is arranged at the bottom of the battery bottom support of the child vehicle. The mother vehicle PDU module is disposed at the bottom of the battery bottom support of the mother vehicle.

10. The system of any of claims 1-9, wherein, The harness binder is disposed on the frame of the mother vehicle, and is used for fixing the connecting cable.

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