New energy sanitation vehicle-mounted electricity taking device with pre-charging function

Abstract

The utility model relates to the technical field of new energy vehicles, in particular to a new energy sanitation vehicle-mounted power taking device with a pre-charging function, which comprises a top-mounted power taking device shell, and a fuse, a main relay, a pre-charging resistor, a pre-charging circuit control board and a pre-charging relay are mounted in the top-mounted power taking device shell. A quick charge input interface, a low-voltage communication interface, an upper power taking port, an MCU (Microprogrammed Control Unit) interface and a battery interface are respectively assembled on the side surface of the upper power taking device shell, and the low-voltage communication interface is electrically connected with the pre-charge circuit control panel through a cable. The new energy environmental sanitation vehicle-mounted electricity taking device with the pre-charging function can conveniently and quickly meet the requirement for vehicle-mounted electricity taking of the new energy environmental sanitation vehicle, can meet the requirement for vehicle-mounted electricity taking of most of new energy environmental sanitation vehicles, and is convenient, quick, safe, reliable, high in practicability and good in application prospect.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to a power taking device for the upper part of a new energy sanitation vehicle with a pre-charging function. Background Technique

[0002] Under the background of the shortage of petroleum energy, the increasingly serious air pollution, and the growing call for green and environmentally friendly travel, the research project of new energy vehicles has been listed as a national key scientific research project, and a strategic policy has been planned to start from traditional fuel vehicles and move towards new energy powered vehicles. New energy vehicles mainly use electricity as power. In order to save energy and reduce emissions, new energy sanitation vehicles have been put on the market. In order for the upper part of the sanitation work to take power from the power system of the new energy chassis, the power taking device for the operation upper part is particularly important.

[0003] The existing power taking device for the upper part transfers high-voltage electricity from the chassis to the upper part through an independent line system. However, the components on the circuit will be affected by the current impact, resulting in safety problems in power taking for the upper part. Content of the Utility Model

[0004] The purpose of the utility model is to provide a power taking device for the upper part of a new energy sanitation vehicle with a pre-charging function, so as to solve the problem that in the current market, the power taking device for the upper part transfers high-voltage electricity from the chassis to the upper part through an independent line system, but the components on the circuit will be affected by the current impact, resulting in safety problems in power taking for the upper part.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A power taking device for the upper part of a new energy sanitation vehicle with a pre-charging function, including a housing of the power taking device for the upper part. Inside the housing of the power taking device for the upper part, a fuse, a main relay, a pre-charge resistor, a pre-charge circuit control board, and a pre-charge relay are installed. On the side of the housing of the power taking device for the upper part, a fast charge input interface, a low-voltage communication interface, a power taking port for the upper part, an MCU interface, and a battery interface are respectively assembled. The low-voltage communication interface is electrically connected to the pre-charge circuit control board through a cable, and the pre-charge circuit control board is respectively electrically connected to the fast charge input interface, the fuse, the main relay, the pre-charge resistor, the power taking port for the upper part, the pre-charge relay, the MCU interface, and the battery interface through cables.

[0006] Preferably, a battery pack power taking cable electrically connected to the battery interface is provided outside the housing of the power taking device for the upper part, and a motor power taking cable electrically connected to the MCU interface is also provided outside the housing of the power taking device for the upper part.

[0007] Preferably, the other end of the battery pack power taking cable is equipped with a battery pack connection head.

[0008] Preferably, the other end of the motor power take-off cable is equipped with a motor controller terminal, and the motor power take-off cable is electrically connected to the motor controller through the motor controller terminal.

[0009] Preferably, the fast charging input interface accesses fast charging direct current, and the fast charging input interface is electrically connected to the battery pack power take-off cable.

[0010] Preferably, the fuse is installed on the cable for connecting the main relay and the battery interface.

[0011] Preferably, the pre-charge resistor is installed on the cable for connecting the upper mounting power take-off port and the pre-charge relay.

[0012] Preferably, the low-voltage communication interface accesses the vehicle harness.

[0013] Preferably, the upper mounting power take-off port and the MCU interface are also electrically connected to the battery interface through cables respectively.

[0014] Preferably, the MCU interface and the fast charging input interface are also electrically connected by a cable.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The upper mounting power take-off device of the new energy sanitation vehicle with a pre-charge function can conveniently and quickly meet the upper mounting power take-off requirements of the new energy sanitation vehicle, can meet the upper mounting power take-off requirements of the vast majority of new energy sanitation vehicles, is convenient, fast, safe, reliable, and has strong practicability, and has a good application prospect. The upper mounting power take-off device of the new energy sanitation vehicle with a pre-charge function receives the upper mounting power supply signal given by the driver through the pre-charge circuit control board, first closes the pre-charge relay, when the voltage of the upper mounting output port reaches 90% of the battery pack voltage, then closes the main relay, and after the main relay is closed, the pre-charge relay is disconnected after a delay of 1 second to complete the upper mounting high voltage, protecting the components on the protection circuit from the impact of large current, ensuring the stability and safety of the entire upper mounting power take-off, and at the same time, the pre-charge circuit control board also has the function of detecting relay adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following shows the drawings of the exemplary embodiments of the present utility model by way of examples, and the same or similar reference numerals are used in the drawings to represent the same or similar elements. In the drawings:

[0017] Figure 1 is a wiring structure schematic diagram of an upper mounting power take-off device of a new energy sanitation vehicle with a pre-charge function of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the housing of an upper mounting power take-off device of a new energy sanitation vehicle with a pre-charge function of the present utility model.

[0019] Reference numerals: 1. Upper mounting power-taking device housing; 2. Fast charging input interface; 3. Fuse; 4. Main relay; 5. Pre-charge resistor; 6. Low-voltage communication interface; 7. Pre-charge circuit control board; 8. Upper mounting power-taking port; 9. Pre-charge relay; 10. MCU interface; 11. Battery interface; 12. Motor controller terminal; 13. Motor power-taking cable; 14. Battery pack connection head; 15. Battery pack power-taking cable. Detailed implementation mode

[0020] For better explanation of the present utility model for easy understanding, the present utility model will be described in detail below with reference to the accompanying drawings through specific implementation modes.

[0021] In the present utility model, the term "and / or" is intended to cover all possible combinations and sub-combinations of the listed elements, including any one of the separately listed elements, any sub-combination or all elements, without necessarily excluding other elements. Unless otherwise specified, the terms "first", "second", etc. are used to describe various elements without intending to limit the positional relationship, timing relationship or importance relationship of these elements. Such terms are only used to distinguish one element from another. Unless otherwise specified, the orientation or positional relationship indicated by terms such as "front, rear, upper, lower, left, right" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of description and simplification of the description, and cannot be understood as a limitation on the protection scope of the present utility model.

[0022] Please refer to Figure 1-2, the present utility model provides a technical solution: a power-taking device for the upper body of a new energy sanitation vehicle with a pre-charge function, which includes an outer shell 1 of the power-taking device for the upper body. Inside the outer shell 1 of the power-taking device for the upper body, a fuse 3, a main relay 4, a pre-charge resistor 5, a pre-charge circuit control board 7 and a pre-charge relay 9 are installed. On the side of the outer shell 1 of the power-taking device for the upper body, a fast-charge input interface 2, a low-voltage communication interface 6, an upper-body power-taking port 8, an MCU interface 10 and a battery interface 11 are respectively assembled. On the outside of the outer shell 1 of the power-taking device for the upper body, a battery-pack power-taking cable 15 electrically connected to the battery interface 11 is provided, and on the outside of the outer shell 1 of the power-taking device for the upper body, a motor power-taking cable 13 electrically connected to the MCU interface 10 is also provided. This structure enables the power-taking device for the upper body to be respectively connected to the battery-pack power-taking cable 15 and the motor power-taking cable 13. At the other end of the battery-pack power-taking cable 15, a battery-pack connection head 14 is assembled. This structure enables the battery-pack power-taking cable 15 to be connected to the power-taking device for the upper body through the battery interface 11, so that the power-taking device for the upper body can take power from the battery pack through the battery-pack power-taking cable 15 to achieve power-taking for the upper body. At the other end of the motor power-taking cable 13, a motor controller connection terminal 12 is assembled, and the motor power-taking cable 13 is electrically connected to the motor controller through the motor controller connection terminal 12. This structure enables the power-taking device for the upper body to be connected to the motor controller through the motor power-taking cable 13, so that the motor controller can take power. Between the low-voltage communication interface 6 and the pre-charge circuit control board 7, they are electrically connected by a cable, and between the pre-charge circuit control board 7 and the fast-charge input interface 2, the fuse 3, the main relay 4, the pre-charge resistor 5, the upper-body power-taking port 8, the pre-charge relay 9, the MCU interface 10 and the battery interface 11, they are respectively electrically connected through cables. The fast-charge input interface 2 accesses fast-charge direct current, and the fast-charge input interface 2 is electrically connected to the battery-pack power-taking cable 15. This structure enables the fast-charge input interface 2 to perform fast-charging processing on the battery pack. The fuse 3 is installed on the cable used to connect the main relay 4 and the battery interface 11. This structure can prevent the damage of the battery pack due to upper-body faults through the fuse 3. The pre-charge resistor 5 is installed on the cable used to connect the upper-body power-taking port 8 and the pre-charge relay 9. This structure uses the pre-charge resistor 5 to assist in the completion of pre-charging. The low-voltage communication interface 6 accesses the vehicle harness. This structure enables the low-voltage communication interface 6 to perform data exchange between different components, such as sending instructions or receiving status information. Through the low-voltage communication interface 6, the driver's intention can be used to control the opening and closing of the pre-charge relay 9 and the main relay 4 through the pre-charge circuit control board 7, and the status and fault conditions of the relay can be fed back to the driver, and it also has the function of detecting relay adhesion. The upper-body power-taking port 8 and the MCU interface 10 are also respectively electrically connected to the battery interface 11 through cables. This structure enables the upper-body power-taking port 8 and the MCU interface 10 to be respectively connected to the battery-pack power-taking cable 15 through the battery interface 11, to achieve power-taking for the upper body of the upper-body power-taking port 8 and power-taking for the motor controller of the MCU interface 10. Between the MCU interface 10 and the fast-charge input interface 2, they are also electrically connected by a cable,Through the connection between this structure and the fast charging input interface 2 via the MCU interface 10, the motor controller can directly obtain power supply processing.

[0023] Working principle: When using the power taking device on the new energy sanitation vehicle with pre-charging function, first, the housing 1 of the power taking device on the upper body installs and fixes the fuse 3, main relay 4, pre-charge resistor 5, pre-charge circuit control board 7, and pre-charge relay 9 respectively. The fast charging input interface 2, low-voltage communication interface 6, power taking port 8 on the upper body, MCU interface 10, and battery interface 11 are respectively assembled on the side of the housing 1 of the power taking device on the upper body to form the power taking device on the upper body. The motor power taking cable 13 is connected to the power taking device on the upper body through the MCU interface 10, so that the motor controller fixed by the motor controller terminal 12 on the motor power taking cable 13 can obtain power taking processing. The battery pack power taking cable 15 is connected to the battery interface 11, so that the battery pack power taking cable 15 is connected to the battery pack connected by the battery pack terminal 14 and the power taking device on the upper body, enabling the power taking device on the upper body to perform power taking on the upper body. When performing power taking on the upper body, the pre-charge circuit control board 7 receives the signal from the driver to supply power to the upper body, then closes the pre-charge relay 9 first. When the voltage at the output port of the upper body reaches 90% of the battery pack voltage, then close the main relay 4. After the main relay 4 is closed, delay for 1 second to disconnect the pre-charge relay 9. The high voltage on the upper body is completed. The pre-charge resistor 5 is used to assist in the completion of pre-charging, and the fuse 3 prevents the battery pack from being damaged due to faults on the upper body, thus completing a series of operations.

[0024] It should be noted that the present utility model (such as the utility model concept, etc.) has been described in the specification of this patent document and / or illustrated in the figures according to exemplary embodiments; the embodiments of the present utility model are presented by way of example only and are not intended to limit the scope of the present utility model. The structure and / or arrangement of the elements of the utility model concept embodied in the present utility model as described in the specification and / or illustrated in the figures are merely illustrative. Although the exemplary embodiments of the present utility model have been described in detail in this patent document, it is readily understood by those of ordinary skill in the art that equivalents, modifications, variations, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present utility model; all such subject matter (such as modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present utility model. It should also be noted that various / other modifications, variations, substitutions, equivalents, changes, omissions, etc. can be made in the configuration and / or arrangement of the exemplary embodiments (such as in terms of concept, design, structure, device, form, assembly, construction, means, function, system, process / method, steps, order of process / method steps, operation, operating conditions, performance, materials, composition, combination, etc.) without departing from the scope of the present utility model; all such subject matter (such as modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present utility model. The scope of the present utility model is not intended to be limited to the subject matter described in the specification and / or figures of this patent document (such as details, structure, function, materials, behavior, steps, order, system, results, etc.). Considering that the claims of this patent document will be appropriately interpreted to cover the full scope of the subject matter of the present utility model (such as including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in this patent document are for the purpose of describing the subject matter of the exemplary embodiments and not as a limitation on the scope of the present utility model.

[0025] It can be understood that the present utility model is described by way of some embodiments. As is known to those skilled in the art, various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present utility model. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. An on-vehicle power-taking device for a new energy sanitation vehicle with a pre-charging function, comprising an on-vehicle power-taking device housing (1), characterized in that: Inside the housing (1) of the upper-mounted power-taking device, a fuse (3), a main relay (4), a pre-charge resistor (5), a pre-charge circuit control board (7), and a pre-charge relay (9) are installed. On the side of the housing (1) of the upper-mounted power-taking device, a fast-charge input interface (2), a low-voltage communication interface (6), an upper-mounted power-taking port (8), an MCU interface (10), and a battery interface (11) are respectively assembled. Between the low-voltage communication interface (6) and the pre-charge circuit control board (7), they are electrically connected by a cable. And between the pre-charge circuit control board (7) and the fast-charge input interface (2), the fuse (3), the main relay (4), the pre-charge resistor (5), the upper-mounted power-taking port (8), the pre-charge relay (9), the MCU interface (10), and the battery interface (11), they are respectively electrically connected and communicated by a cable.

2. The power-taking device for the upper body of a new energy sanitation vehicle with a pre-charging function according to claim 1, characterized in that: Outside the housing (1) of the upper-mounted power-taking device, a battery pack power-taking cable (15) electrically connected to the battery interface (11) is provided. And outside the housing (1) of the upper-mounted power-taking device, a motor power-taking cable (13) electrically connected to the MCU interface (10) is also provided.

3. The power-taking device for the upper body of a new energy sanitation vehicle with a pre-charging function according to claim 2, wherein: At the other end of the battery pack power-taking cable (15), a battery pack connection head (14) is assembled.

4. The power-taking device for the upper part of a new energy sanitation vehicle with a pre-charging function according to claim 2, wherein: At the other end of the motor power-taking cable (13), a motor controller connection terminal (12) is assembled. And the motor power-taking cable (13) is electrically connected to the motor controller through the motor controller connection terminal (12).

5. The power-taking device for the upper body of a new energy sanitation vehicle with a pre-charging function according to claim 1, characterized in that: The fast-charge input interface (2) is connected to fast-charge direct current, and the fast-charge input interface (2) is electrically connected to the battery pack power-taking cable (15).

6. The power-taking device for the upper body of a new energy sanitation vehicle with a pre-charging function according to claim 1, characterized in that: The fuse (3) is installed on the cable for connecting the main relay (4) and the battery interface (11).

7. The on-vehicle power-taking device of a new energy sanitation vehicle with a pre-charging function according to claim 1, characterized in that: The pre-charge resistor (5) is installed on the cable for connecting the upper-mounted power-taking port (8) and the pre-charge relay (9).

8. The power-taking device for the upper body of a new energy sanitation vehicle with a pre-charging function according to claim 1, characterized in that: The low-voltage communication interface (6) is connected to the vehicle wiring harness.

9. The power-taking device for the upper body of a new energy sanitation vehicle with a pre-charging function according to claim 1, wherein: The upper-mounted power-taking port (8) and the MCU interface (10) are also respectively electrically connected to the battery interface (11) through a cable.

10. The power-taking device for the upper body of a new energy sanitation vehicle with a pre-charging function according to claim 1, characterized in that: Between the MCU interface (10) and the fast-charge input interface (2), they are also electrically connected by a cable.

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