Double-electric-control controller

Abstract

The utility model belongs to the technical field of controllers, and provides a double-electric-control controller, which comprises a cooling water channel, a box body, a first cavity and a second cavity, a filter assembly, a thin-film capacitor and a first insulated gate bipolar transistor are electrically connected in the first cavity in sequence; a second insulated gate bipolar transistor is mounted in the second cavity, and the second insulated gate bipolar transistor is electrically connected to the thin-film capacitor; the cooling water channel is formed in the inner wall of the box body. According to the utility model, the box body is provided with the first cavity and the second cavity which are opposite to each other, each cavity is internally provided with the IGBT, and the two IGBTs share the filter assembly and the thin-film capacitor, so that the weight of the box body is reduced, and the cost is reduced; in addition, the cooling water channel can cool parts in the first cavity and the second cavity at the same time, the two cavities share one cooling water channel, the situation that independent flow channels are connected through water pipes can be effectively avoided, space is effectively utilized, and material waste is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of controllers, and in particular relates to a dual-electric controller. Background Art

[0002] When new energy vehicles use dual-motor or quad-motor drive, the internal components of the controller of each drive motor are used separately, the box and cooling water channels are also used independently, and water pipes are required to connect the water channels; the entire motor controller assembly is not highly integrated, occupies a large space, and has high costs. Utility Model Content

[0003] In view of the above problems, the present invention proposes a dual-electric controller.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A dual electric control controller, comprising:

[0006] The box body is provided with a first cavity and a second cavity facing each other;

[0007] In the first cavity, along the current flow direction, a filter component, a thin film capacitor and a first insulated gate bipolar transistor are electrically connected in sequence;

[0008] A second insulated gate bipolar transistor is installed in the second cavity, and the second insulated gate bipolar transistor is electrically connected to the thin film capacitor;

[0009] The cooling water channel is provided in the inner wall of the box between the first cavity and the second cavity, and is used for heat exchange with the first insulated gate bipolar transistor and the second insulated gate bipolar transistor.

[0010] Preferably, the box body is connected with a first cover plate and a second cover plate; the first cover plate is used to close the first cavity, and the second cover plate is used to close the second cavity.

[0011] Preferably, the filter assembly is also electrically connected to a DC bus, and the DC bus is located outside the box.

[0012] Preferably, in the first cavity, the first insulated gate bipolar transistor is electrically connected to a first three-phase component; in the second cavity, the second insulated gate bipolar transistor is electrically connected to a second three-phase component;

[0013] The first three-phase component and the second three-phase component are both used to connect to an external motor.

[0014] Preferably, in the first cavity, a first circuit board is mounted on a surface of the first insulated gate bipolar transistor away from the bottom of the first cavity, and a first heat dissipation pin group is mounted on a surface away from the first circuit board;

[0015] The first heat dissipation needle group passes through the inner wall of the box and extends into the cooling water channel.

[0016] Preferably, the first circuit board is also electrically connected to a first low-voltage plug-in, and the first low-voltage plug-in is installed on the surface of the box.

[0017] Preferably, in the second cavity, a second circuit board is mounted on a surface of the second insulated gate bipolar transistor away from the bottom of the second cavity, and a second heat dissipation pin group is mounted on a surface away from the second circuit board;

[0018] The second heat dissipation needle group passes through the inner wall of the box and extends into the cooling water channel.

[0019] Preferably, the second circuit board is also electrically connected to a second low-voltage plug-in, and the second low-voltage plug-in is installed on the surface of the box.

[0020] Preferably, an isolation rib is further provided in the first cavity, and the isolation rib is provided between the filter component and the thin film capacitor to form a filter cavity and a capacitor cavity;

[0021] The filter component is located in the filter cavity, and the film capacitor is located in the capacitor cavity.

[0022] Preferably, the first cavity and the second cavity share part of the inner wall of the box, and the area of ​​the first cavity is larger than that of the second cavity.

[0023] Preferably, the cooling water channel includes a first water nozzle, a second water nozzle, a first flow channel, a second flow channel and a transfer flow channel;

[0024] Along the flow direction of the cooling water, the first water nozzle, the first flow channel, the switching flow channel, the second flow channel and the second water nozzle are connected in sequence to form a Z-shaped flow channel;

[0025] The first flow channel corresponds to the position of the first insulated gate bipolar transistor in the first cavity;

[0026] The second flow channel corresponds to the position of the second insulated gate bipolar transistor in the second cavity and corresponds to the position of the thin film capacitor in the first cavity;

[0027] The transfer channel is L-shaped and is used to connect the first channel and the second channel.

[0028] Beneficial effects of the utility model:

[0029] The box body of the utility model is provided with a first cavity and a second cavity facing each other, and an insulated gate bipolar transistor (IGBT) is installed in each cavity. At the same time, the two IGBTs share a filter component and a thin film capacitor, thereby reducing the weight of the box body, saving space and the number of parts, and thus reducing costs; in addition, the cooling water channel can simultaneously dissipate heat for the parts in the first cavity and the second cavity. The two cavities share one cooling water channel, which can effectively avoid the use of water pipes to connect the independent flow channels, effectively utilize space, and avoid material waste.

[0030] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 Shows a schematic structural diagram of a dual electric control controller of the present invention;

[0033] Figure 2 A schematic diagram of the first cavity of the present invention is shown;

[0034] Figure 3 A schematic diagram of the second cavity of the present invention is shown;

[0035] Figure 4 Shows a schematic structural diagram of the cooling channel of the present invention;

[0036] Figure 5 The figure shows a cross-sectional structural diagram of a dual-electric controller of the present invention.

[0037] In the figure: 1. casing; 101. first cavity; 102. second cavity; 103. filter cavity; 104. capacitor cavity; 2. first cover plate; 3. second cover plate; 4. DC bus; 5. first low-voltage plug-in; 6. cooling water channel; 601. first water nozzle; 602. second water nozzle; 603. first flow channel; 604. second flow channel; 7. filter assembly; 8. thin film capacitor; 9. first insulated gate bipolar transistor; 901. first heat sink pin group; 902. first circuit board; 10. first three-phase assembly; 11. isolation rib; 12. first baffle plate; 13. second baffle plate; 14. second insulated gate bipolar transistor; 1401. second heat sink pin group; 1402. second circuit board; 15. second three-phase assembly; 16. first seal; 17. second seal; 18. second low-voltage plug-in. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] A dual-electric controller includes a housing 1, a first cavity 101, a second cavity 102, and a cooling water channel 6. The housing 1 is mainly composed of the first cavity 101 and the second cavity 102, which are opposite to each other. In the first cavity 101, along the direction of current flow, a filter component 7, a thin film capacitor 8, and a first insulated gate bipolar transistor 9 are electrically connected in sequence; in the second cavity 102, a second insulated gate bipolar transistor 14 is installed, and the second insulated gate bipolar transistor 14 is electrically connected to the thin film capacitor 8. The cooling water channel 6 is opened in the inner wall of the housing 1 between the first cavity 101 and the second cavity 102, and is used for heat exchange with the first insulated gate bipolar transistor 9 and the second insulated gate bipolar transistor 14.

[0040] It should be noted that in the above structure, the housing 1 is provided with two upper and lower cavities, each of which houses an insulated gate bipolar transistor (IGBT). The two IGBTs share a filter assembly 7 and a thin-film capacitor 8, thereby reducing the weight of the housing 1, saving space and the number of parts, thereby reducing costs. Furthermore, the cooling water channel 6 can simultaneously dissipate heat from the components in the first cavity 101 and the second cavity 102. The two cavities share a single cooling water channel 6, effectively avoiding the need to connect the independent flow channels with water pipes, effectively utilizing space, and avoiding material waste.

[0041] The following combination Figure 1-Figure 5 , further explaining the structure of this dual electric control controller.

[0042] like Figure 1 As shown, the box body 1 is connected to a first cover plate 2 and a second cover plate 3; wherein the first cover plate 2 is used to close the first cavity 101, and the second cover plate 3 is used to close the second cavity 102. Figure 2 It can be seen that the filter assembly 7 is also electrically connected to the DC bus 4, which is located outside the box 1. At the same time, in the first cavity 101, the first insulated gate bipolar transistor 9 is electrically connected to the first three-phase assembly 10; combined Figure 3 It can be seen that in the second cavity 102, the second insulated gate bipolar transistor 14 is electrically connected to the second three-phase component 15. The first three-phase component 10 and the second three-phase component 15 are both used to connect to an external motor.

[0043] It should be noted that the high-voltage direct current enters the filter component 7 in the first cavity 101 through the DC bus 4, and enters the thin-film capacitor 8 connected thereto through the filter component 7; after the high-voltage direct current passes through the thin-film capacitor 8, on the one hand, it is converted into an alternating current by the first insulated gate bipolar transistor 9 in the first cavity 101 and flows to the first three-phase component 10 of the first cavity 101, and finally reaches the corresponding drive motor; after the high-voltage direct current passes through the thin-film capacitor 8, on the other hand, it is converted into an alternating current by the second insulated gate bipolar transistor 14 in the second cavity 102 and flows to the second three-phase component 15 of the second cavity 102 and output to the corresponding drive motor.

[0044] It should be further explained that the first cavity 101 and the second cavity 102 can be connected at the IGBT, so that the IGBT in the second cavity 102 can be connected to the thin film capacitor 8 .

[0045] like Figure 2 As shown, the first cavity 101 is L-shaped as a whole, and the main parts of the controller are installed in the cavity. Specifically: in the first cavity 101, the first insulated gate bipolar transistor 9 is installed with a first circuit board 902 on the surface away from the bottom of the first cavity 101. Figure 5 As can be seen, a first heat sink assembly 901 is mounted on the surface of the first insulated gate bipolar transistor 9, away from the first circuit board 902. The first heat sink assembly 901 extends through the inner wall of the housing 1 into the cooling water channel 6. Furthermore, the first circuit board 902 is electrically connected to a first low-voltage plug-in 5, which is mounted on the surface of the housing 1, to one side of the film capacitor 8 and filter assembly 7.

[0046] It should be noted that the first circuit board 902 is a PCB board. Figure 2In the structure, the low-voltage signal can be transmitted from the first low-voltage plug-in 5 to the first circuit board 902, and then transmitted to the first insulated gate bipolar transistor 9 through the first circuit board 902. At the same time, the heat generated by the first insulated gate bipolar transistor 9 during operation can be exchanged with the cooling water in the cooling water channel 6 through the first heat dissipation pin group 901, thereby helping to cool the first insulated gate bipolar transistor 9.

[0047] like Figure 3 As shown, the second cavity 102 is a rectangular structure as a whole, and its area is smaller than the first cavity 101. Figure 3 The lower right corner of the middle cavity 102, so the second cavity 102 and the first cavity 101 have a part of the inner wall of the box 1 shared. In the second cavity 102, the second insulated gate bipolar transistor 14 is mounted with a second circuit board 1402 on the surface away from the bottom of the second cavity 102. Figure 5 As can be seen, a second heat sink assembly 1401 is mounted on the surface of the second insulated gate bipolar transistor 14, away from the second circuit board 1402. The second heat sink assembly 1401 extends through the inner wall of the housing 1 into the cooling water channel 6. Furthermore, the second circuit board 1402 is electrically connected to a second low-voltage plug-in 18, which is mounted on the surface of the housing 1 and located outside the second cavity 102.

[0048] It should be noted that the second circuit board 1402 is a PCB board. Figure 2 In this structure, the low-voltage signal can be transmitted from the second low-voltage plug-in 18 to the second circuit board 1402, and then transmitted to the second insulated gate bipolar transistor 14 through the second circuit board 1402. At the same time, the heat generated by the second insulated gate bipolar transistor 14 during operation can be exchanged with the cooling water in the cooling water channel 6 through the second heat dissipation pin group 1401, thereby helping to cool the second insulated gate bipolar transistor 14.

[0049] like Figure 4 As shown, a filter cavity 103 and a capacitor cavity 104 are further provided in the first cavity 101. Specifically, an isolation rib 11 can be provided between the filter assembly 7 and the film capacitor 8. The isolation rib 11 is connected to the inner wall of the first cavity 101. The position is detailed in FIG. Figure 2 The box body 1 is provided with a filter cavity 103 and a capacitor cavity 104 formed by the isolation rib 11, and together with the first cover plate 2, the second cover plate 3, etc., constitute a sealed cavity, so that the first circuit board 902 and the second circuit board 1402 are respectively in two independent cavities to improve electromagnetic compatibility.

[0050] like Figure 4As shown, the cooling water channel 6 includes a first water nozzle 601, a second water nozzle 602, a first flow channel 603, a second flow channel 604, and a switching flow channel. Along the cooling water flow direction, the first water nozzle 601, the first flow channel 603, the switching flow channel, the second flow channel 604, and the second water nozzle 602 are sequentially connected to form a Z-shaped flow channel. The first flow channel 603 corresponds to the position of the first insulated gate bipolar transistor 9 in the first cavity 101; the second flow channel 604 corresponds to the position of the second insulated gate bipolar transistor 14 in the second cavity 102, and to the position of the thin film capacitor 8 in the first cavity 101. The switching flow channel is L-shaped and is used to connect the first flow channel 603 and the second flow channel 604.

[0051] like Figure 5 As shown, the first heat dissipation pin group 901 extends into the first flow channel 603, and the second heat dissipation pin group 1401 extends into the second flow channel 604. In addition, a first seal 16 is installed at the interface between the first heat dissipation pin group 901 and the first flow channel 603, and a second seal 17 is installed at the interface between the second heat dissipation pin group 1401 and the second flow channel 604. This prevents cooling water from seeping into the first cavity 101 and the second cavity 102 of the housing 1.

[0052] It should be noted that the first flow channel 603 and the second flow channel 604 correspond to different cavities, respectively. The coolant enters from the first water nozzle 601, flows through the first flow channel 603 located in the first cavity 101, then turns left to enter the transfer flow channel (a channel composed of the first baffle 12, the second baffle 13, and the housing 1), then turns right to flow into the second flow channel 604 located in the second cavity 102, and then flows out through the second water nozzle 602. Therefore, the first flow channel 603, the second flow channel 604, the first baffle 12, the second baffle 13, and the housing 1 form a Z-shaped integrated flow channel that flows through different cavities; this not only prevents coolant leakage, but also enables IGBTs located in different cavities to share a single cooling water channel 6, effectively avoiding the use of water pipes to connect the independent flow channels.

[0053] It should be further explained that, combined with Figure 2 、 Figure 3 and Figure 5 As can be seen, the transfer channel is primarily composed of the first baffle 12, the second baffle 13, and the inner wall of the housing 1. The first baffle 12 is mounted on the bottom surface of the first cavity 101, the second baffle 13 is mounted on the back surface of the first cavity 101, and the remaining portion is formed by the wall of the housing 1. Furthermore, the transfer channel requires machining, after which the first and second baffles 12, 13 are used to form a closed flow channel with the housing 1 (the first and second baffles are friction welded to the housing).

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A dual electric controller, characterized in that: include: The box body (1) is provided with a first cavity (101) and a second cavity (102) facing each other; In the first cavity (101), a filter component (7), a thin film capacitor (8), and a first insulated gate bipolar transistor (9) are electrically connected in sequence along the current flow direction; A second insulated gate bipolar transistor (14) is installed in the second cavity (102), and the second insulated gate bipolar transistor (14) is electrically connected to the thin film capacitor (8); A cooling water channel (6) is provided in the inner wall of the box (1) between the first cavity (101) and the second cavity (102) and is used for heat exchange with the first insulated gate bipolar transistor (9) and the second insulated gate bipolar transistor (14).

2. A dual electric controller according to claim 1, characterized in that: The box body (1) is connected to a first cover plate (2) and a second cover plate (3); the first cover plate (2) is used to close the first cavity (101), and the second cover plate (3) is used to close the second cavity (102).

3. A dual electric controller according to claim 1, characterized in that: The filter assembly (7) is also electrically connected to a DC bus (4), and the DC bus (4) is located outside the box (1).

4. A dual electric controller according to claim 1, characterized in that: In the first cavity (101), the first insulated gate bipolar transistor (9) is electrically connected to a first three-phase component (10); in the second cavity (102), the second insulated gate bipolar transistor (14) is electrically connected to a second three-phase component (15); The first three-phase component (10) and the second three-phase component (15) are both used for connecting to an external motor.

5. The dual electric controller according to claim 1, characterized in that: In the first cavity (101), a first circuit board (902) is mounted on a surface of the first insulated gate bipolar transistor (9) away from the bottom of the first cavity (101), and a first heat dissipation pin group (901) is mounted on a surface away from the first circuit board (902); The first heat dissipation needle group (901) extends through the inner wall of the box body (1) into the cooling water channel (6).

6. A dual electric controller according to claim 5, characterized in that: The first circuit board (902) is also electrically connected to a first low-voltage plug-in (5), and the first low-voltage plug-in (5) is mounted on the surface of the box (1).

7. The dual electric controller according to claim 1, characterized in that: In the second cavity (102), a second circuit board (1402) is mounted on a surface of the second insulated gate bipolar transistor (14) away from the bottom of the second cavity (102), and a second heat dissipation pin group (1401) is mounted on a surface away from the second circuit board (1402); The second heat dissipation needle group (1401) extends through the inner wall of the box body (1) into the cooling water channel (6).

8. The dual electric controller according to claim 7, characterized in that: The second circuit board (1402) is also electrically connected to a second low-voltage plug-in (18), and the second low-voltage plug-in (18) is mounted on the surface of the box (1).

9. The dual electric controller according to claim 7, characterized in that: An isolation rib (11) is further provided in the first cavity (101), and the isolation rib (11) is provided between the filter component (7) and the thin film capacitor (8), forming a filter cavity (103) and a capacitor cavity (104); The filter component (7) is located in the filter cavity (103), and the thin film capacitor (8) is located in the capacitor cavity (104).

10. The dual electric controller according to claim 7, characterized in that: The first cavity (101) and the second cavity (102) share part of the inner wall of the box (1), and the area of ​​the first cavity (101) is larger than the area of ​​the second cavity (102).

11. A dual electric controller according to any one of claims 1 to 10, characterized in that: The cooling water channel (6) comprises a first water nozzle (601), a second water nozzle (602), a first flow channel (603), a second flow channel (604) and a transfer flow channel; Along the flow direction of the cooling water, the first water nozzle (601), the first flow channel (603), the switching flow channel, the second flow channel (604) and the second water nozzle (602) are connected in sequence to form a Z-shaped flow channel; The first flow channel (603) corresponds to the position of the first insulated gate bipolar transistor (9) in the first cavity (101); The second flow channel (604) corresponds to the position of the second insulated gate bipolar transistor (14) in the second cavity (102), and corresponds to the position of the thin film capacitor (8) in the first cavity (101); The switching channel is L-shaped and is used to connect the first channel (603) and the second channel (604).

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