A new energy truck double-layer power electronic current distribution device

Abstract

The utility model provides a new energy truck double -deck power electronic current distribution device relates to new energy transportation technical field, include: installation cavity, one side of installation cavity is provided with fixed base, is provided with communication plug on the installation cavity of fixed base one side, both ends of installation cavity all are provided with overflow wire harness, both sides of installation cavity all are provided with overflow copper bar, be provided with cooling fan in installation cavity. The utility model discloses a main controller intelligent control current interlock device, has realized the physical repulsion and safety switching of battery charging and vehicle power supply two kinds of working mode, effectively prevented the misoperation risk in the process of charging and driving, its double -deck structure design will large -current passage and control component layering isolation, not only has optimized the space layout, but also has eliminated the possibility of mutual exclusion loop simultaneous work from the physical level, cooperates manual protection switch as hardware redundancy, together ensures the high reliability and safety of system.

Description

Technical Field

[0001] This utility model relates to the field of new energy transportation technology, and in particular to a double-layer power electronic current distribution device for new energy trucks. Background Technology

[0002] With the rapid development of new energy vehicles, electric trucks have become an important part of future transportation. New energy vehicles, especially electric trucks, have significant advantages in environmental protection and energy conservation, and are gradually becoming an important choice for the transportation industry. However, the stability and safety of the battery charging and vehicle power supply systems of electric trucks remain a critical issue in their design and application. In practical use, battery charging and power supply systems need to switch between different operating modes. If battery charging and vehicle power supply occur simultaneously, it may lead to electrical system failures or even safety hazards.

[0003] Currently, most existing power electronic distribution devices lack effective current isolation mechanisms, making it easy for charging and power supply systems to conflict, leading to equipment damage or safety hazards. In power system design, current interlocking and safe switching techniques are not perfect, easily causing misoperation or system failure. Existing designs do not consider space optimization and physical isolation in the arrangement of power and control components, resulting in cumbersome circuit designs that are susceptible to external environmental factors. While existing power electronic current distribution devices have achieved functional switching between battery charging and vehicle power supply to some extent, most still suffer from imperfect current interlocking design, insufficient electrical isolation, and chaotic spatial layout. The lack of proper physical isolation easily leads to parallel operation of charging and power supply circuits, causing dangerous situations such as overcurrent and short circuits. The design lacks adequate emergency or special situation response measures and redundant safety protection mechanisms. Because existing devices cannot physically prevent mutual interference and parallel operation of current circuits, these deficiencies prevent them from meeting the efficient and safe charging and power supply needs of new energy truck batteries. Therefore, we provide a dual-layer power electronic current distribution device for new energy trucks. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a dual-layer power electronic current distribution device for new energy trucks.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dual-layer power electronic current distribution device for new energy trucks, comprising: a mounting cavity, a fixing seat provided on one side of the mounting cavity, a communication plug provided on the mounting cavity on one side of the fixing seat, overcurrent harnesses provided at both ends of the mounting cavity, overcurrent copper busbars provided on both sides of the mounting cavity, a cooling fan provided in the mounting cavity, a lower protection element provided in the mounting cavity, an upper protection element provided on the side of the cooling fan away from the lower protection element, a battery charging negative terminal provided at one end of the mounting cavity, and a battery charging positive terminal provided on the mounting cavity on the side of the battery charging negative terminal.

[0006] In a preferred embodiment, a vehicle charging negative terminal one is provided at the end of the mounting cavity away from the battery charging negative terminal and the battery charging positive terminal. A vehicle charging positive terminal one is provided on one side of the vehicle charging negative terminal one. A vehicle charging positive terminal two is provided on one side of the mounting cavity. A vehicle charging negative terminal two is provided on one side of the vehicle charging positive terminal two. A battery interface negative terminal is provided on the side of the mounting cavity away from the vehicle charging positive terminal two and the vehicle charging negative terminal two. A battery interface positive terminal is provided on one side of the battery interface negative terminal. A manual protection switch negative terminal and a manual protection switch positive terminal are installed on the side of the mounting cavity away from the battery interface negative terminal. A current interlock device negative terminal and a current interlock device positive terminal are provided in the mounting cavity. A control trigger and a main controller are provided in the mounting cavity.

[0007] In a preferred embodiment, one end of the mounting base is welded to one side of the mounting cavity, one end of the communication plug is mated to the mounting cavity, one end of the overcurrent harness is mated to one end of the mounting cavity, and both the upper and lower protective elements are mated and installed in the mounting cavity.

[0008] In a preferred embodiment, one end of the current-carrying copper busbar is connected to one side of the mounting cavity, the cooling fan is fixedly installed in the mounting cavity, the battery charging negative terminal and the battery charging positive terminal are connected to the current-carrying wire harness at one end of the mounting cavity, and the vehicle charging positive terminal, the vehicle charging negative terminal, and the vehicle charging positive terminal are connected to the end of the mounting cavity away from the battery charging negative terminal and the battery charging positive terminal.

[0009] In a preferred embodiment, the vehicle charging positive terminal 2 and the vehicle charging negative terminal 2 are connected to one side of the mounting cavity, and the battery interface negative terminal and the battery interface positive terminal are connected to the side of the mounting cavity away from the vehicle charging positive terminal 2 and the vehicle charging negative terminal 2.

[0010] In a preferred embodiment, the negative and positive terminals of the current interlock device are fixedly installed in the mounting cavity, the control trigger is fixedly installed in the mounting cavity, and the main controller is fixedly installed in the mounting cavity.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This utility model uses a main controller to intelligently control the current interlock device, realizing the physical mutual exclusion and safe switching between the two working modes of battery charging and vehicle power supply. It effectively prevents the risk of misoperation during charging and driving. Its dual-layer structure design isolates the high current path and control components on the upper and lower layers, which not only optimizes the spatial layout, but also physically eliminates the possibility of mutual exclusion circuits working at the same time. Together with the manual protection switch as hardware redundancy, it ensures the high reliability and safety of the system. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of a dual-layer power electronic current distribution device for a new energy truck provided by this utility model.

[0013] Figure 2 This is a top view schematic diagram of the structure of a double-layer power electronic current distribution device for a new energy truck provided by this utility model.

[0014] Legend: 1. Mounting cavity; 2. Mounting bracket; 3. Communication plug; 4. Overcurrent harness; 5. Upper protection element; 6. Overcurrent copper busbar; 7. Cooling fan; 8. Lower protection element; 9. Battery charging negative terminal; 10. Battery charging positive terminal; 11. Battery interface negative terminal; 12. Battery interface positive terminal; 13. Manual protection switch negative terminal; 14. Manual protection switch positive terminal; 15. Vehicle charging negative terminal one; 16. Vehicle charging positive terminal one; 17. Vehicle charging positive terminal two; 18. Vehicle charging negative terminal two; 19. Current interlock device negative terminal; 20. Current interlock device positive terminal; 21. Control trigger; 22. Main controller. Detailed Implementation

[0015] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0016] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0017] Example 1 like Figure 1-2As shown, this utility model provides a technical solution: a dual-layer power electronic current distribution device for new energy trucks, comprising: a mounting cavity 1, a fixing seat 2 on one side of the mounting cavity 1, a communication plug 3 on the mounting cavity 1 on one side of the fixing seat 2, overcurrent harnesses 4 at both ends of the mounting cavity 1, overcurrent copper busbars 6 on both sides of the mounting cavity 1, a cooling fan 7 in the mounting cavity 1, a lower protection element 8 in the mounting cavity 1, an upper protection element 5 on the side of the cooling fan 7 away from the lower protection element 8, a battery charging negative terminal 9 at one end of the mounting cavity 1, and a battery charging positive terminal 10 on the mounting cavity 1 on the side of the battery charging negative terminal 9; A vehicle charging negative terminal 15 is provided at the end of the mounting cavity 1 away from the battery charging negative terminal 9 and the battery charging positive terminal 10. A vehicle charging positive terminal 16 is provided on one side of the vehicle charging negative terminal 15. A vehicle charging positive terminal 17 is provided on one side of the mounting cavity 1. A vehicle charging negative terminal 18 is provided on one side of the vehicle charging positive terminal 17. A battery interface negative terminal 11 is provided on the side of the mounting cavity 1 away from the vehicle charging positive terminal 17 and the vehicle charging negative terminal 18. A battery interface positive terminal 12 is provided on one side of the battery interface negative terminal 11. A manual protection switch negative terminal 13 and a manual protection switch positive terminal 14 are installed on the side of the mounting cavity 1 away from the battery interface negative terminal 11. A current interlock device negative terminal 19 and a current interlock device positive terminal 20 are provided in the mounting cavity 1. A control trigger 21 and a main controller 22 are provided in the mounting cavity 1. One end of the mounting base 2 is welded to one side of the mounting cavity 1. One end of the communication plug 3 is connected to the mounting cavity 1. One end of the current-carrying wire harness 4 is connected to one end of the mounting cavity 1. The upper protection element 5 and the lower protection element 8 are both connected and installed in the mounting cavity 1. One end of the current-carrying copper busbar 6 is connected to one side of the mounting cavity 1. The cooling fan 7 is fixedly installed in the mounting cavity 1. The battery charging negative terminal 9 and the battery charging positive terminal 10 are connected to the current-carrying wire harness 4 at one end of the mounting cavity 1. The vehicle charging positive terminal 16, the vehicle charging negative terminal 15, and the vehicle charging positive terminal 16 are connected to the end of the mounting cavity 1 away from the battery charging negative terminal 9 and the battery charging positive terminal 10. Vehicle charging positive terminal 2 17 and vehicle charging negative terminal 2 18 are connected to one side of the mounting cavity 1. Battery interface negative terminal 11 and battery interface positive terminal 12 are connected to the side of the mounting cavity 1 away from vehicle charging positive terminal 2 17 and vehicle charging negative terminal 2 18. Current interlock device negative terminal 19 and current interlock device positive terminal 20 are fixedly installed in the mounting cavity 1. Control trigger 21 is fixedly installed in the mounting cavity 1. Main controller 22 is fixedly installed in the mounting cavity 1.

[0018] In this embodiment, the main controller 22 intelligently controls the current interlock device, realizing the physical mutual exclusion and safe switching between the two working modes of battery charging and vehicle power supply. This effectively prevents the risk of misoperation during charging and driving. Its dual-layer structure design isolates the high current path and control components in layers, which not only optimizes the spatial layout but also physically eliminates the possibility of mutual exclusion circuits working at the same time. Together with the manual protection switch as hardware redundancy, it ensures the high reliability and safety of the system.

[0019] Working principle: like Figure 1-2 As shown, in actual use, the core working principle of this dual-layer power electronic current distribution device for new energy trucks is based on the intelligent control of the negative terminals 19 and 20 of the current interlock device by the main controller 22. This achieves physical mutual exclusion and safe switching between the two working modes of battery charging and vehicle power supply. When it is necessary to charge the vehicle battery, the operator connects the external charging equipment to the positive terminal 10 and negative terminal 9 of the battery charging interface. After detecting this connection signal, the main controller immediately controls the current interlock device to operate, forcibly cutting off or locking the circuit paths of the positive terminal 16, negative terminal 15, positive terminal 17, and negative terminal 18 of the vehicle charging interface, ensuring that the vehicle drive system is in a power-off isolation state. The charging current flows to the positive terminal 12 and negative terminal 11 of the battery interface through the dedicated battery charging circuit, the overcurrent copper busbar 6, and the upper protection element 5 and lower protection element 8. The system charges the battery pack efficiently with maximum current capacity, and the cooling fan 7 starts simultaneously to manage the temperature rise.

[0020] Conversely, when the vehicle needs to move and the battery powers the vehicle's drive system, the vehicle charging interface (i.e., the vehicle load interface) must be connected. Once the main controller detects that the vehicle interface is enabled, it immediately instructs the current interlock device to switch states, forcibly disconnecting and locking the circuit between the negative terminal 9 and the positive terminal 10 of the battery charging interface, thus completely preventing the risk of accidentally connecting to a charging power source while driving. The power supply current then flows out from the negative terminal 11 and the positive terminal 12 of the battery interface, and through the interlock device confirming the closed vehicle power supply circuit, overcurrent busbar, and protection components, provides the maximum power current to the vehicle drive system, ensuring the truck's normal operation.

[0021] The physical layout of the entire device adopts a double-layer structure design, which isolates high-current path components such as overcurrent copper busbars, external connectors and core control components interlocking devices, main controller 22, and cooling fan 7 in upper and lower layers. This design not only optimizes the component layout in a limited space and achieves compactness, but more importantly, it avoids any possibility of the two mutually exclusive high-current circuits of charging and power supply working at the same time from a physical level. The negative terminal 13 and the positive terminal 14 of the manual protection switch serve as hardware safety redundancy for emergency or maintenance, and together with the logic interlock of the main controller, they form a double guarantee, ensuring the high reliability and safety of the system under any operating conditions.

[0022] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0023] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-layer power electronic current distribution device for new energy trucks, characterized in that, include: The mounting cavity (1) has a mounting base (2) on one side, a communication plug (3) on the mounting cavity (1) on one side of the mounting base (2), a current-carrying wire harness (4) on both ends of the mounting cavity (1), a current-carrying copper busbar (6) on both sides of the mounting cavity (1), a cooling fan (7) in the mounting cavity (1), a lower protection element (8) in the mounting cavity (1), an upper protection element (5) on the side of the cooling fan (7) away from the lower protection element (8), a battery charging negative terminal (9) on one end of the mounting cavity (1), and a battery charging positive terminal (10) on the mounting cavity (1) on the side of the battery charging negative terminal (9).

2. The dual-layer power electronic current distribution device for new energy trucks according to claim 1, characterized in that: A vehicle charging negative electrode one (15) is provided at one end of the mounting cavity (1) away from the battery charging negative electrode (9) and the battery charging positive electrode (10). A vehicle charging positive electrode one (16) is provided on one side of the vehicle charging negative electrode one (15). A vehicle charging positive electrode two (17) is provided on one side of the mounting cavity (1). A vehicle charging negative electrode two (18) is provided on one side of the vehicle charging positive electrode two (17). A vehicle charging negative electrode two (18) is provided on the side of the mounting cavity (1) away from the vehicle charging positive electrode two (17) and the vehicle charging negative electrode two (18). A battery interface negative terminal (11) is provided, and a battery interface positive terminal (12) is provided on one side of the battery interface negative terminal (11). A manual protection switch negative terminal (13) and a manual protection switch positive terminal (14) are installed on the mounting cavity (1) on the side of the battery interface positive terminal (12) away from the battery interface negative terminal (11). A current interlock device negative terminal (19) and a current interlock device positive terminal (20) are provided in the mounting cavity (1). A control trigger (21) and a main controller (22) are provided in the mounting cavity (1).

3. The dual-layer power electronic current distribution device for new energy trucks according to claim 1, characterized in that: One end of the fixing base (2) is welded to one side of the mounting cavity (1), one end of the communication plug (3) is connected to the mounting cavity (1), one end of the overcurrent harness (4) is connected to one end of the mounting cavity (1), and the upper protection element (5) and the lower protection element (8) are both connected and installed in the mounting cavity (1).

4. The dual-layer power electronic current distribution device for new energy trucks according to claim 2, characterized in that: One end of the current-carrying copper busbar (6) is connected to one side of the mounting cavity (1). The cooling fan (7) is fixedly installed in the mounting cavity (1). The battery charging negative terminal (9) and the battery charging positive terminal (10) are connected to the current-carrying wire harness (4) at one end of the mounting cavity (1). The vehicle charging positive terminal (16), the vehicle charging negative terminal (15), and the vehicle charging positive terminal (16) are connected to the end of the mounting cavity (1) away from the battery charging negative terminal (9) and the battery charging positive terminal (10).

5. A dual-layer power electronic current distribution device for new energy trucks according to claim 2, characterized in that: The vehicle charging positive electrode 2 (17) and the vehicle charging negative electrode 2 (18) are connected to one side of the mounting cavity (1), and the battery interface negative electrode (11) and the battery interface positive electrode (12) are connected to the side of the mounting cavity (1) away from the vehicle charging positive electrode 2 (17) and the vehicle charging negative electrode 2 (18).

6. The dual-layer power electronic current distribution device for new energy trucks according to claim 2, characterized in that: The negative terminal (19) and positive terminal (20) of the current interlock device are fixedly installed in the mounting cavity (1), the control trigger (21) is fixedly installed in the mounting cavity (1), and the main controller (22) is fixedly installed in the mounting cavity (1).

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