Inversion DC conversion power box

Abstract

The invention relates to the technical field of new energy automobiles, and discloses an inversion DC conversion power box, which comprises a box body, an input terminal, a first output terminal, a second output terminal and a control conversion assembly, and is characterized in that the input terminal is arranged in the box body and is used for connecting high-voltage input current; the first output terminal is arranged in the box body and is used for outputting three-phase high-voltage current; the second output terminal is arranged in the box body and is used for transmitting low-voltage direct current; according to the inverter DC conversion power box, the control conversion assembly is arranged in the box body, high-voltage input current is introduced through the input terminal, and three-phase high-voltage current and low-voltage direct current are controlled to be output through the control conversion assembly and are output through the first output terminal and the second output terminal respectively; the three-phase alternating current and the low-voltage power supply are output synchronously, the integration performance is improved, the size and weight of the conversion power box are reduced, and the use and maintenance cost and complexity are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to an inverter DC conversion power supply box. Background Art

[0002] The safety and reliability of explosion-proof rubber-tyred trackless vehicles in mines are extremely high, as they operate in complex mine environments. At present, conventional DC-DC converters and inverters are usually not allowed to be directly used in mine environments because they do not meet the relevant explosion-proof requirements.

[0003] In the prior art, explosion-proof DC-DC converters and explosion-proof inverters are usually designed and manufactured as two independent products. This separate design not only leads to a significant increase in cost, but also increases the overall volume and weight of the product, which is not conducive to the operation of vehicles in narrow and complex mining environments. In addition, the deployment and maintenance of two independent products also increase the complexity and inconvenience of use. Summary of the invention

[0004] In view of this, the present invention provides an inverter DC converter to solve the problems in the prior art that the conversion power box of the vehicle is too large in size and weight, and is complex to use and maintain.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows:

[0006] The present invention provides an inverter DC conversion power supply box, comprising: a box body, an input terminal, a first output terminal, a second output terminal and a control conversion component, wherein the input terminal is arranged in the box body, and the input terminal is used to connect a high-voltage input current; the first output terminal is arranged in the box body, and is used to output a three-phase high-voltage current; the second output terminal is arranged in the box body, and is used to transmit a low-voltage direct current; the control conversion component is arranged in the box body, the input end of the control conversion component is connected to the input terminal, the first output end of the control conversion component is connected to the first output terminal, and the second output end of the control conversion component is connected to the second output terminal, and the control conversion component is suitable for converting the high-voltage input current into a three-phase high-voltage current and a low-voltage direct current.

[0007] It has the following advantages:

[0008] By setting a control conversion component in the box, high-voltage input current is introduced through the input terminal, and passes through the control conversion component to control the output of three-phase high-voltage current and low-voltage direct current, and output through the first output terminal and the second output terminal respectively. The inverter DC conversion power box realizes synchronous output of three-phase alternating current and low-voltage power through the control conversion component, improves the collective performance, reduces the volume and weight of the conversion power box, and reduces the cost and complexity of use and maintenance.

[0009] According to some embodiments of the present invention, a plurality of partitions are provided in the box body, so as to separate the inner cavity of the box body into a first wiring cavity, a control cavity and a second wiring cavity in sequence, the input terminal and the second output terminal are located in the first wiring cavity, the control conversion component is located in the control cavity, and the first output terminal is located in the second wiring cavity.

[0010] According to some embodiments of the present invention, the box body includes a bottom plate, side plates surrounding the bottom plate, and end covers covered on the side walls, and the side walls are provided with a first introduction port, a second introduction port, and a third introduction port, the first introduction port and the second introduction port are connected to the first wiring cavity, and the third introduction port is connected to the second wiring cavity.

[0011] According to some embodiments of the present invention, a rib is provided in the first wiring cavity, suitable for dividing the first wiring cavity into a first cavity and a second cavity isolated from each other, the input terminal is located in the first cavity, the second output terminal is located in the second cavity, the first introduction port is connected to the first cavity, and the second introduction terminal is connected to the second cavity.

[0012] According to some embodiments of the present invention, the control conversion component includes a control drive chip and a power driver both disposed in the control cavity, the control drive chip is communicatively connected to the power driver, and the power driver is electrically connected to the input terminal.

[0013] According to some embodiments of the present invention, the inverter DC conversion power supply box further includes a fuse, which is disposed in the box body and is disposed on a connection line between the power driver and the input terminal.

[0014] According to some embodiments of the present invention, the inverter DC conversion power supply box further includes a cooling component, which is disposed in the control cavity and is suitable for performing heat exchange on the control conversion component.

[0015] According to some embodiments of the present invention, the cooling assembly includes a water cooling plate, which is arranged on the base plate, and the area of ​​the water cooling plate covers the projection area of ​​the control chamber on the base plate. A water inlet and a water outlet are opened on the side plate, and the water inlet and the water outlet are connected to the water cooling plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The present invention is a schematic structural diagram of an inverter DC conversion power supply box according to an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 1. Box body; 11. Bottom plate; 12. Side wall; 13. End cover; 14. Partition plate; 15. Rib plate; 121. First introduction port; 122. Second introduction port; 123. Third introduction port; 124. Water inlet; 125. Water outlet; 2. Input terminal; 3. First output terminal; 4. Second output terminal; 5. Power driver; 6. Control driver chip; 7. Fuse; 8. Water cooling plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Reference Figure 1 As shown, the present invention provides an inverter DC conversion power supply box, comprising: a box body 1, an input terminal 2, a first output terminal 3, a second output terminal 4 and a control conversion component, wherein the input terminal 2 is arranged in the box body 1, and the input terminal 2 is used to connect a high-voltage input current; the first output terminal 3 is arranged in the box body 1, and is used to output a three-phase high-voltage current; the second output terminal 4 is arranged in the box body 1, and is used to transmit a low-voltage direct current; the control conversion component is arranged in the box body 1, the input end of the control conversion component is connected to the input terminal 2, the first output end of the control conversion component is connected to the first output terminal 3, and the second output end of the control conversion component is connected to the second output terminal 4, and the control conversion component is suitable for converting the high-voltage input current into a three-phase high-voltage current and a low-voltage direct current.

[0025] Specifically, by setting a control conversion component in the box 1, the high-voltage input current is introduced through the input terminal 2, and the output three-phase high-voltage current and low-voltage DC current are controlled by the control conversion component, and are output through the first output terminal 3 and the second output terminal 4 respectively. The inverter DC conversion power line realizes the synchronous output of three-phase AC power and low-voltage power supply through the control conversion component, improves the collective performance, reduces the volume and weight of the conversion power box, and reduces the cost and complexity of use and maintenance.

[0026] It is understandable that in the prior art, the DC-DC converter and the inverter are two products. The DC-DC conversion is completed by using the energy storage characteristics of the electric energy inductor to stabilize the voltage, and the inverter is to use the DC power to convert into a three-phase AC power with a constant frequency and voltage. The two products have two functions, which increases the cost of the whole vehicle product and also occupies the layout space of the whole vehicle. In the present invention, the two-in-one technology of DC-DC conversion and three-phase inverter conversion is realized, which mainly uses the inverter to output three-phase AC power, and then passes through the isolation power supply and the same frequency rectifier to become a low-voltage DC power supply, so the output realizes the output of low-voltage power supply and three-phase AC power supply.

[0027] In some embodiments of the present invention, a plurality of partitions 14 are provided in the box body 1, so as to separate the inner cavity of the box body 1 into a first wiring cavity, a control cavity and a second wiring cavity in sequence. The input terminal 2 and the second output terminal 4 are located in the first wiring cavity, the control conversion assembly is located in the control cavity, and the first output terminal 3 is located in the second wiring cavity.

[0028] Specifically, in order to achieve the stability of the output power supply voltage, a partition 14 is set in the box body 1 to separate the first wiring chamber, the control chamber and the second wiring chamber, wherein the first wiring chamber and the second wiring chamber are separated by a control strong partition, the control conversion component is located in the control chamber, and the high-voltage input current passes through the input terminal 2, and is converted in the control conversion component to form a three-phase high-voltage power supply and a low-voltage DC power supply, and each is distributed to the first output terminal 3 and the second output terminal 4 for output. The first output terminal 3 is located in the second wiring chamber, and the second output terminal 4 is located in the first wiring chamber.

[0029] In some embodiments of the present invention, the box body 1 includes a bottom plate 11, side plates surrounding the bottom plate 11, and an end cover 13 covered on the side wall 12. The side wall 12 is provided with a first introduction port 121, a second introduction port 122, and a third introduction port 123. The first introduction port 121 and the second introduction port 122 are connected to the first wiring cavity, and the third introduction port 123 is connected to the second wiring cavity.

[0030] Specifically, the bottom plate 11, the side plate and the end cover 13 are all made of insulating materials, and a first introduction port 121, a second introduction port 122 and a third introduction port 123 are opened on the side wall 12 to facilitate the access of cables, improve the convenience of wiring, and reduce maintenance costs.

[0031] In some embodiments of the present invention, a rib 15 is provided in the first wiring cavity to separate the first wiring cavity into a first cavity and a second cavity that are isolated from each other. The input terminal 2 is located in the first cavity, the second output terminal 4 is located in the second cavity, the first introduction port 121 is connected to the first cavity, and the second introduction terminal is connected to the second cavity.

[0032] Specifically, in order to ensure the stability of the output of the low-voltage DC power supply, a rib 15 is arranged in the first wiring cavity to form a first cavity and a second cavity that are isolated from each other, wherein the input terminal 2 is located in the first cavity and the second output terminal 4 is located in the second cavity, thereby realizing the separation of input and output.

[0033] In some embodiments of the present invention, the control conversion component includes a control drive chip 6 and a power driver 5 both disposed in the control cavity, the control drive chip 6 is communicatively connected to the power driver 5 , and the power driver 5 is electrically connected to the input terminal 2 .

[0034] Specifically, the power driver 5 is controlled by controlling the driving chip 6 to convert the high-voltage input current into a three-phase high-voltage power supply to provide driving force for the 3kw asynchronous motor. It can be understood that the first output terminal 3 is an M6 type flameproof terminal and a nine-core flameproof terminal; the second output terminal 4 is an M5 flameproof terminal.

[0035] In some embodiments of the present invention, the inverter DC conversion power supply box further includes a fuse 7 , which is disposed in the box body 1 , and is disposed on a connection line between the power driver 5 and the input terminal 2 .

[0036] Specifically, a fuse 7 is provided between the power driver 5 and the input terminal 2 to protect the power driver 5 and prevent the power driver 5 from being damaged due to excessive high-voltage input current, thereby improving reliability.

[0037] In some embodiments of the present invention, the inverter DC conversion power supply box further includes a cooling component, which is disposed in the control cavity and is suitable for performing heat exchange on the control conversion component.

[0038] In some embodiments of the present invention, the cooling assembly includes a water cooling plate 8, which is arranged on the base plate 11. The area of ​​the water cooling plate 8 covers the projection area of ​​the control chamber on the base plate 11. A water inlet 124 and a water outlet 125 are opened on the side plate, and the water inlet 124 and the water outlet 125 are connected to the water cooling plate 8.

[0039] Specifically, since the control conversion component will generate a lot of heat during operation, in order to avoid excessive temperature affecting the current conversion efficiency, a cooling component is arranged in the control cavity. Specifically, the cooling component is a water cooling plate 8, and the water cooling plate 8 is arranged on the bottom plate 11. The control drive chip 6 and the power driver 5 are arranged on the water cooling plate 8. A water inlet 124 and a water outlet 125 connected to the water cooling plate 8 are opened on the side wall 12. The heat generated during the operation of the control drive chip 6 and the power driver 5 is circulated through the water circuit to achieve a cooling effect, thereby improving safety and reliability.

[0040] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An inverter DC conversion power supply box, characterized in that: include: Box (1), An input terminal (2) is arranged in the box (1), and the input terminal (2) is used to connect a high-voltage input current; A first output terminal (3) is arranged in the box (1) and is used to output a three-phase high-voltage current; A second output terminal (4) is arranged in the box (1) and is used to transmit low-voltage direct current; A control conversion component is arranged in the housing (1), the input end of the control conversion component is connected to the input terminal (2), the first output end of the control conversion component is connected to the first output terminal (3), and the second output end of the control conversion component is connected to the second output terminal (4), and the control conversion component is suitable for converting high-voltage input current into three-phase high-voltage current and low-voltage direct current.

2. The inverter DC conversion power supply box according to claim 1, characterized in that: A plurality of partitions (14) are provided in the box body (1) so as to separate the inner cavity of the box body (1) into a first wiring cavity, a control cavity and a second wiring cavity in sequence; the input terminal (2) and the second output terminal (4) are located in the first wiring cavity, the control conversion component is located in the control cavity, and the first output terminal (3) is located in the second wiring cavity.

3. The inverter DC conversion power supply box according to claim 2, characterized in that: The box body (1) comprises a bottom plate (11), side plates surrounding the bottom plate (11), and an end cover (13) covered on the side wall (12); the side wall (12) is provided with a first introduction port (121), a second introduction port (122), and a third introduction port (123); the first introduction port (121) and the second introduction port (122) are in communication with the first wiring cavity, and the third introduction port (123) is in communication with the second wiring cavity.

4. The inverter DC conversion power supply box according to claim 3, characterized in that: A rib plate (15) is provided in the first wiring cavity so as to separate the first wiring cavity into a first cavity and a second cavity which are isolated from each other. The input terminal (2) is located in the first cavity, the second output terminal (4) is located in the second cavity, the first introduction port (121) is connected to the first cavity, and the second introduction terminal is connected to the second cavity.

5. The inverter DC conversion power supply box according to claim 4, characterized in that: The control conversion component comprises a control drive chip (6) and a power driver (5) both of which are arranged in the control cavity; the control drive chip (6) is communicatively connected to the power driver (5); and the power driver (5) is electrically connected to the input terminal (2).

6. The inverter DC conversion power supply box according to claim 1, characterized in that: It also comprises a fuse (7), wherein the fuse (7) is arranged in the box (1), and the fuse (7) is arranged on the connection line between the power driver (5) and the input terminal (2).

7. The inverter DC conversion power supply box according to claim 2, characterized in that: It also includes a cooling component, which is arranged in the control cavity and is suitable for performing heat exchange on the control conversion component.

8. The inverter DC conversion power supply box according to claim 7, characterized in that: The cooling assembly comprises a water cooling plate (8), wherein the water cooling plate (8) is arranged on the bottom plate (11), and the area of ​​the water cooling plate (8) covers the projected area of ​​the control chamber on the bottom plate (11); a water inlet (124) and a water outlet (125) are provided on the side plate, and the water inlet (124) and the water outlet (125) are connected to the water cooling plate (8).

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