Inversion DC conversion power box

Abstract

The utility model 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 utility model relates to new energy automobile technical field, concretely relates to a kind of inverter DC conversion power supply box. BACKGROUND

[0002] The mine explosion-proof trackless rubber-tyred vehicle running in the complex environment of mine has very high requirements for its safety and reliability. At present, the conventional DC-DC converter and inverter are not allowed to be directly applied in mine environment because they do not meet the relevant explosion-proof requirements.

[0003] In the prior art, the explosion-proof DC-DC converter and the explosion-proof inverter are usually designed and manufactured as two independent products. This separate design not only significantly increases the cost, but also increases the overall volume and weight of the product, which is not conducive to the operation of the vehicle in the narrow and complex mine environment. In addition, the deployment and maintenance of the two independent products also increase the complexity and inconvenience of use. SUMMARY

[0004] Therefore, the utility model provides an inverter DC conversion power supply box to solve the problem of large volume and weight of the conversion power supply box of the vehicle in the prior art, high complexity of use and maintenance.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] The utility model 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 assembly, the input terminal is arranged in the box body, the input terminal is used for connecting high-voltage input current; the first output terminal is arranged in the box body, for outputting three-phase high-voltage current; the second output terminal is arranged in the box body, for conveying low-voltage direct-current current; the control conversion assembly is arranged in the box body, the input end of the control conversion assembly is connected with the input terminal, the first output end of the control conversion assembly is connected with the first output terminal, the second output end of the control conversion assembly is connected with the second output terminal, and the control conversion assembly is adapted to convert high-voltage input current into three-phase high-voltage current and low-voltage direct-current current.

[0007] The utility model has the advantages of:

[0008] By arranging the control conversion assembly in the box body, the high-voltage input current is introduced through the input terminal, and the three-phase high-voltage current and the low-voltage direct-current current are controlled and output through the first output terminal and the second output terminal respectively. The inverter DC conversion power supply box realizes synchronous output of three-phase alternating current and low-voltage power supply through the control conversion assembly, improves the integration performance, reduces the volume and weight of the conversion power supply box, and reduces the use and maintenance cost and complexity.

[0009] According to some embodiments of the present application, the box is internally provided with a plurality of partitions to sequentially divide the internal cavity of the box into a first wiring cavity, a control cavity and a second wiring cavity, the input terminal and the second output terminal are located in the first wiring cavity, the control conversion assembly 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 application, the box comprises a bottom plate, a side wall surrounding the periphery of the bottom plate, and an end cover arranged on the side wall, the side wall is 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 in communication with the first wiring cavity, and the third introduction port is in communication with the second wiring cavity.

[0011] According to some embodiments of the present application, the first wiring cavity is internally provided with a rib plate to divide the first wiring cavity into a first cavity and a second cavity which are 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 in communication with the first cavity, and the second introduction port is in communication with the second cavity.

[0012] According to some embodiments of the present application, the control conversion assembly comprises a control driving chip and a power driver which are both arranged in the control cavity, the control driving chip is in communication connection with the power driver, and the power driver is in electrical connection with the input terminal.

[0013] According to some embodiments of the present application, the inverter DC conversion power supply box further comprises a fuse, the fuse is arranged in the box, and the fuse is arranged on the connecting line between the power driver and the input terminal.

[0014] According to some embodiments of the present application, the inverter DC conversion power supply box further comprises a cooling assembly, the cooling assembly is arranged in the control cavity, and the cooling assembly is adapted to perform heat exchange on the control conversion assembly.

[0015] According to some embodiments of the present application, the cooling assembly comprises a water cooling plate, the water cooling plate is arranged on the bottom plate, the area of the water cooling plate covers the projection area of the control cavity on the bottom plate, the side wall is provided with a water inlet and a water outlet, and the water inlet and the water outlet are in communication with the water cooling plate. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0017] Figure 1 The structure diagram of the inverter DC conversion power supply box of the embodiment of the present application.

[0018] Explanation of reference signs:

[0019] 1, box; 11, bottom plate; 12, side wall, 13, end cover; 14, partition; 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 drive chip; 7, fuse; 8, water cooling plate. Specific embodiments

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] In the description of the present application, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be mechanical connection, also can be electrical connection, it can be direct connection, also can be indirect connection through intermediate medium, it can be the communication inside two elements, for ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict between them.

[0024] Referring to Figure 1 As shown in the utility model provides a kind of inverter DC conversion power supply box, comprising: box 1, input terminal 2, first output terminal 3, second output terminal 4 and control conversion component, input terminal 2 is located in box 1, input terminal 2 is used to connect high-voltage input current;First output terminal 3 is located in box 1, to be used to output three-phase high-voltage current;Second output terminal 4 is located in box 1, to be used to transport low-voltage direct current;Control conversion component is located in box 1, the input of control conversion component is connected with input terminal 2, the first output of control conversion component is connected with first output terminal 3, the second output of control conversion component is connected with second output terminal 4, control conversion component is adapted to convert high-voltage input current into three-phase high-voltage current and low-voltage direct current.

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

[0026] It can be understood that, in the prior art, DC-DC converter and inverter are two products, for DC-DC conversion is completed by using the energy storage characteristics of inductance, and the inverter is used to convert direct current into fixed-frequency and fixed-voltage three-phase alternating current, two products have two functions, which increases the cost of whole vehicle product and occupies the layout space of whole vehicle.In the utility model, DC-DC conversion and three-phase inverter conversion two-in-one technology are realized, mainly using the output three-phase alternating current of inverter, and converting into low-voltage direct current through isolation power supply and same-frequency rectifier, so that the output realizes low-voltage power supply and three-phase alternating current power supply output.

[0027] In some embodiments of the utility model, the box 1 is equipped with several partitions 14, to adapt to sequentially separate the inner cavity of the box 1 to form a first wiring cavity, a control cavity and a second wiring cavity, 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, to realize the stability of output power supply voltage, the partitions 14 are arranged in the box 1 to form the first wiring cavity, the control cavity and the second wiring cavity, wherein the first wiring cavity and the second wiring cavity are arranged through the control interval, the control conversion assembly is located in the control cavity, the high-voltage input current is converted in the control conversion assembly to form a three-phase high-voltage power supply and a low-voltage direct-current power supply, and is respectively 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 cavity, and the second output terminal 4 is located in the first wiring cavity.

[0029] In some embodiments of the utility model, the box 1 includes a bottom plate 11, a side wall surrounding the four sides of the bottom plate 11, and an end cover 13 arranged on the side wall 12, the first introduction port 121, the second introduction port 122 and the third introduction port 123 are arranged on the side wall 12, the first introduction port 121 and the second introduction port 122 are communicated with the first wiring cavity, and the third introduction port 123 is communicated with the second wiring cavity.

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

[0031] In some embodiments of the utility model, the first wiring cavity is equipped with a rib plate 15, to adapt to separate the first wiring cavity to form a first cavity and a second cavity that are mutually isolated, 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 communicated with the first cavity, and the second introduction port is communicated with the second cavity.

[0032] Specifically, to ensure the stability of the output of the low-voltage direct-current power supply, the rib plate 15 is arranged in the first wiring cavity to form the first cavity and the second cavity that are mutually isolated, wherein the input terminal 2 is located in the first cavity, and the second output terminal 4 is located in the second cavity, so as to realize the separation of input and output.

[0033] In some embodiments of the utility model, the control conversion assembly includes 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 in communication connection with the power driver 5, and the power driver 5 is in electrical connection with the input terminal 2.

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

[0035] In some embodiments of the utility model, the inverter DC conversion power supply box further comprises a fuse 7, the fuse 7 is arranged in the box body 1, and the fuse 7 is arranged on the connecting line between the power driver 5 and the input terminal 2.

[0036] Specifically, the fuse 7 is arranged between the power driver 5 and the input terminal 2 to protect the power driver 5, avoid damage to the power driver 5 caused by excessive high-voltage input current, and improve reliability.

[0037] In some embodiments of the utility model, the inverter DC conversion power supply box further comprises a cooling assembly, the cooling assembly is arranged in the control cavity, and the cooling assembly is suitable for heat exchange of the control conversion assembly.

[0038] In some embodiments of the utility model, the cooling assembly comprises a water cooling plate 8, the water cooling plate 8 is arranged on the bottom plate 11, the area of the water cooling plate 8 covers the projection area of the control cavity on the bottom plate 11, and a water inlet 124 and a water outlet 125 are formed in the side wall and communicate with the water cooling plate 8.

[0039] Specifically, since the control conversion assembly generates a large amount of heat during operation, to avoid the influence of high temperature on current conversion efficiency, the cooling assembly is arranged in the control cavity, specifically, the cooling assembly is a water cooling plate 8, the water cooling plate 8 is arranged on the bottom plate 11, the control driving chip 6 and the power driver 5 are arranged on the water cooling plate 8, and a water inlet 124 and a water outlet 125 that communicate with the water cooling plate 8 are formed in the side wall 12, heat generated during operation of the control driving chip 6 and the power driver 5 is circulated through the water circuit, so as to achieve the effect of cooling, improve safety and reliability.

[0040] Although the embodiments of the utility model are described in combination with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An inverter-DC converter power supply box, characterized in that, include: Box (1), An input terminal (2) is located inside the housing (1) and is used to connect a high-voltage input current. The first output terminal (3) is located inside the housing (1) for outputting three-phase high-voltage current; The second output terminal (4) is located inside the housing (1) for transmitting low-voltage DC current; A control conversion component is disposed inside 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). The second output end of the control conversion component is connected to the second output terminal (4). The control conversion component is adapted to convert high voltage input current into three-phase high voltage current and low voltage DC current.

2. The inverter-DC converter power supply box according to claim 1, characterized in that, The housing (1) is provided with several partitions (14) to divide the inner cavity of the housing (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 converter power supply box according to claim 2, characterized in that, The housing (1) includes a base plate (11), a side wall (12) surrounding the base plate (11), and an end cap (13) covering the side wall (12). The side wall (12) has a first inlet port (121), a second inlet port (122), and a third inlet port (123). The first inlet port (121) and the second inlet port (122) are connected to the first wiring cavity, and the third inlet port (123) is connected to the second wiring cavity.

4. The inverter-DC converter power supply box according to claim 3, characterized in that, The first wiring cavity is provided with a rib (15) to divide 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 inlet port (121) is connected to the first cavity, and the second inlet port (122) is connected to the second cavity.

5. The inverter-DC converter power supply box according to claim 4, characterized in that, 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).

6. The inverter-DC converter power supply box according to claim 5, characterized in that, It also includes a fuse (7), which is located inside the housing (1) and is located on the connection line between the power driver (5) and the input terminal (2).

7. The inverter-DC converter power supply box according to claim 3, characterized in that, It also includes a cooling assembly disposed within the control cavity, the cooling assembly being adapted to perform heat exchange on the control conversion assembly.

8. The inverter-DC converter power supply box according to claim 7, characterized in that, The cooling assembly includes a water cooling plate (8), which is disposed on the base plate (11). The area of ​​the water cooling plate (8) covers the projected area of ​​the control cavity on the base plate (11). An inlet (124) and an outlet (125) are provided on the side wall (12), and the inlet (124) and the outlet (125) are connected to the water cooling plate (8).

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