Power assembly and motor controller

Abstract

The utility model relates to the technical field of vehicles, in particular to a power assembly and a motor controller. The power assembly provided by the utility model comprises a radiator assembly and a plurality of power single tubes, the plurality of power single tubes form a three-phase inversion full bridge, and each arm of the three-phase inversion full bridge is provided with one or more power single tubes connected in parallel; the radiator assembly comprises a shell and heat dissipation plates arranged on the two sides of the shell respectively, part of the power single tubes are arranged on the side, away from the shell, of one heat dissipation plate, and part of the power single tubes are arranged on the side, away from the shell, of the other heat dissipation plate. According to the embodiment of the invention, each power component adopts a plurality of power single tubes which are connected in parallel, the current level can be flexibly adjusted, and the requirements of different currents and powers are met; compared with a single power module in a traditional scheme, the flexibility is good.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a power component and a motor controller. Background Art

[0002] As motor controllers become more mature, the power density of motor controllers is becoming more and more important. The power component is the core component of the motor controller and is the main factor affecting the power density, heat dissipation performance and cost. The traditional power component uses the existing encapsulated power module with a fixed current level that cannot be adjusted, and its volume is large. Due to the large volume of its power module, the overall structure of the controller is not easy to integrate with the motor and reducer. Utility Model Content

[0003] The present disclosure provides a power component and a motor controller to at least solve the above technical problems existing in the prior art.

[0004] A first aspect of the present disclosure provides a power component, comprising:

[0005] A radiator assembly and a plurality of power single tubes, wherein the plurality of power single tubes constitute a three-phase inverter full bridge, and each arm of the three-phase inverter full bridge has one or more power single tubes connected in parallel;

[0006] The radiator assembly includes a shell and heat sinks respectively arranged on both sides of the shell, part of the power single tubes are arranged on a side of one heat sink away from the shell, and part of the power single tubes are arranged on a side of the other heat sink away from the shell.

[0007] Further, the shell is formed with a cavity, and the first opening and the second opening are respectively provided on opposite sides of the shell, and the first opening and the second opening both extend along the length direction of the shell, and one of the heat dissipation plates covers the first opening and is connected to the shell, and the other heat dissipation plate covers the second opening and is connected to the shell, so that the radiator assembly forms a heat exchange channel, and the shell is provided with an inlet and an outlet communicating with the heat exchange channel;

[0008] The power single tube is arranged on a side of the heat sink away from the shell.

[0009] Furthermore, a ceramic plate assembly is provided between the radiator assembly and the power single tube, and the ceramic plate assembly is connected to the radiator assembly and the power single tube respectively;

[0010] The ceramic board assembly comprises a ceramic board and copper cladding layers located on both sides of the ceramic board.

[0011] Furthermore, a heat dissipation pin is provided on a side of the heat dissipation plate facing the shell.

[0012] Further, the power assembly includes a busbar assembly, and the busbar assembly is arranged above the shell;

[0013] The busbar assembly comprises a U-phase busbar, a V-phase busbar, a W-phase busbar, a DC busbar positive plate and a DC busbar negative plate.

[0014] Furthermore, the DC bus positive plate is provided with a positive plate upper bridge pin and a positive plate capacitor interface, the positive plate upper bridge pin is connected to the C pole of the power single tube, and the positive plate capacitor interface is used to connect to the positive busbar of the bus capacitor;

[0015] The DC bus negative plate is provided with a negative plate lower bridge pin and a negative plate capacitor interface, the negative plate lower bridge pin is connected to the E pole of the power single tube, and the negative plate capacitor interface is used to connect to the negative busbar of the bus capacitor;

[0016] The U-phase busbar is provided with two U-phase busbar upper bridge pins, two U-phase busbar lower bridge pins and a U-phase busbar output interface, the U-phase busbar upper bridge pins and the U-phase busbar lower bridge pins are respectively connected to the E pole and the C pole of a group of power single tubes, and the U-phase busbar output interface is used to connect to the U-phase input interface of a set of windings of the drive motor;

[0017] The V-phase busbar is provided with two V-phase busbar upper bridge pins, two V-phase busbar lower bridge pins and a V-phase busbar output interface, the V-phase busbar upper bridge pins and the V-phase busbar lower bridge pins are respectively connected to the E pole and the C pole of a group of power single tubes, and the V-phase busbar output interface is used to connect to the V-phase input interface of a set of windings of the drive motor;

[0018] The W-phase busbar is provided with two W-phase busbar upper bridge pins, two W-phase busbar lower bridge pins and a W-phase busbar output interface. The W-phase busbar upper bridge pins and the W-phase busbar lower bridge pins are respectively connected to the E pole and C pole of a group of power single tubes, and the W-phase busbar output interface is used to connect to the W-phase input interface of a set of windings of a drive motor.

[0019] Furthermore, an insulating film is provided between the DC bus positive plate and the DC bus negative plate; and an insulating film is provided between the DC bus negative plate and the U-phase busbar, the V-phase busbar and the W-phase busbar.

[0020] Furthermore, the shell is provided with a first sealing groove and a second sealing groove, the first sealing groove surrounds the first opening, the second sealing groove surrounds the second opening, and both the first sealing groove and the second sealing groove are provided with sealing members.

[0021] Furthermore, the cavity is provided with a partition.

[0022] Furthermore, the shell is provided with a positioning pin, the heat dissipation plate is provided with a pin hole, and the positioning pin is plug-fitted with the pin hole.

[0023] A second aspect of the present disclosure provides a motor controller, comprising the power component described in the first aspect.

[0024] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0025] The power component provided in the embodiment of the present disclosure includes a heat sink assembly and a plurality of power single tubes, the plurality of power single tubes constitute a three-phase inverter full bridge, and each arm of the three-phase inverter full bridge has one or more of the power single tubes connected in parallel; the heat sink assembly includes a shell and heat sinks respectively arranged on both sides of the shell, some of the power single tubes are arranged on the side of a heat sink away from the shell, and some of the power single tubes are arranged on the side of another heat sink away from the shell. In the embodiment of the present disclosure, each bridge arm of the power component adopts a plurality of power single tubes in parallel, and the current level can be flexibly adjusted to meet the needs of different currents and powers; compared with the single power module of the traditional solution, it has good flexibility. According to the power and current level requirements, the power component provided by the present disclosure can adopt 1, 2 or more power single tubes in parallel, and its flexibility is better than that of the existing modules; and the power component provided by the present disclosure is convenient to be used as a sub-module to form a multi-module controller, so as to realize power module reuse and reduce costs.

[0026] According to the power and current level requirements, the power component provided by the present invention can adopt 1, 2 or more power single tubes in parallel, and its flexibility is better than that of existing modules; and the power component provided by the present invention can be conveniently used as a sub-module to form a multi-module controller, thereby realizing power module reuse and reducing costs.

[0027] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0029] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0030] Figure 1 A schematic diagram of the structure of the power component according to an embodiment of the present disclosure is shown;

[0031] Figure 2 An exploded view of a power component according to an embodiment of the present disclosure is shown;

[0032] Figure 3 An exploded view of the busbar assembly according to an embodiment of the present disclosure is shown;

[0033] Figure 4 An exploded view of a ceramic plate assembly according to an embodiment of the present disclosure is shown;

[0034] Figure 5 An exploded view of a heat sink assembly according to an embodiment of the present disclosure is shown;

[0035] Figure 6 A schematic diagram of a power component according to an embodiment of the present disclosure is shown;

[0036] Figure 7 A schematic diagram of the structure of the motor controller described in an embodiment of the present disclosure is shown.

[0037] Explanation of the numbers in the figure: 1. Control and drive integrated circuit board; 101. Three-phase busbar through hole; 102. Pin through hole; 104. Current sensor; 22. Import; 23. Export; 3. DC input connector; 7. Housing; 8. Power component; 801. Three-phase output interface; 803. Second installation interface; 804. Power single tube; 805. Component pin; 806. Radiator component; 9. Busbar capacitor; 100. Busbar component; 1020. Positive and negative busbar input interface; 210. Ceramic plate component; 400. Insulation film; 500. U-phase busbar; 501. U-phase busbar upper bridge pin; 502. U-phase busbar lower bridge pin; 503. U-phase busbar output interface; 600. V-phase busbar; 700. W-phase Busbar; 800, negative plate of DC busbar; 8010, lower bridge pin of negative plate; 8030, capacitor interface of negative plate; 8040, through hole of negative plate; 900, positive plate of DC busbar; 9020, upper bridge pin of positive plate; 9030, capacitor interface of positive plate; 9040, through hole of positive plate; 410, through hole of insulating film; 411, insulating part of three-phase busbar; 418, through hole of three-phase busbar; 220, copper cladding; 230, ceramic plate; 221, stress relief hole; 301, shell; 3011, partition; 302, heat sink; 3021, heat sink pin; 304, fastener; 305, seal; 306, sealing groove; 307, positioning pin; 308, first pin hole; 309, second pin hole. DETAILED DESCRIPTION

[0038] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0039] Combination Figure 1 and Figure 2 As shown, the power assembly 8 provided in the embodiment of the present disclosure includes a heat sink assembly 806 and a plurality of power single tubes 804, two power single tubes 804 are connected in parallel to form a bridge arm of an inverter full bridge; a plurality of power single tubes 804 constitute a three-phase inverter full bridge, and each arm of the three-phase inverter full bridge has one or more power single tubes 804 connected in parallel. The heat sink assembly 806 includes a housing 301 and heat sinks 302 respectively arranged on both sides of the housing 301, part of the power single tubes 804 are arranged on a side of a heat sink 302 away from the housing 301, and part of the power single tubes 804 are arranged on a side of another heat sink 302 away from the housing 301. In the embodiment of the present disclosure, each power assembly 8 uses a plurality of power single tubes 804 to form a three-phase inverter full bridge, and each arm of the three-phase inverter full bridge has one or more of the power single tubes connected in parallel, and the current level can be flexibly adjusted to meet the needs of different currents and powers; compared with the single power module of the traditional solution, it has good flexibility. According to the power and current level requirements, each bridge arm of the power component 8 provided in the present invention can adopt 1, 2 or more power single tubes 804 in parallel, and its flexibility is better than that of existing modules; and the power component 8 provided in the present invention can be conveniently used as a sub-module to form a multi-module controller, thereby realizing power module reuse and reducing costs.

[0040] Optionally, the number of power tubes 804 may be 1, 2, 3 or more.

[0041] In some specific embodiments, the power assembly 8 includes a heat sink assembly 806 and a plurality of power single tubes 804. The heat sink assembly 806 includes a shell 301 and two heat sinks 302. The shell 301 forms a cavity. The shell 301 is provided with a first opening and a second opening on opposite sides thereof. The first opening and the second opening extend along the length direction of the shell 301. One heat sink 302 covers the first opening and is connected to the shell 301. The other heat sink 302 covers the second opening and is connected to the shell 301, so that the heat sink assembly 806 forms a heat exchange channel. The shell 301 is provided with an inlet 22 and an outlet 23 communicating with the heat exchange channel. The power single tube 804 is arranged on a side of the heat sink 302 away from the shell 301. When in use, a heat exchange liquid can be introduced into the heat exchange channel through the inlet 22 and the outlet 23. The heat exchange liquid can exchange heat with the heat sink 302, thereby taking away the heat of the power single tube 804 arranged on the heat exchange plate, and meeting the heat dissipation requirements of a high-power heat exchange assembly.

[0042] According to the power and current level requirements, each bridge arm of the power component provided by the present invention can adopt 1, 2 or more power single tubes in parallel, and its flexibility is better than that of existing modules; and the power component provided by the present invention can be conveniently used as a sub-module to form a multi-module controller, thereby realizing power module reuse and reducing costs.

[0043] like Figure 1 As shown, a plurality of power single tubes 804 are placed on both sides of the radiator assembly 806, and the power single tubes 804 are cooled through the radiator assembly 806; there are six power single tubes 804 on each side of the radiator assembly 806, two of which form a group, for a total of three groups, corresponding to three upper bridge arms or three lower bridge arms of an inverter bridge, that is, each bridge arm has two power single tubes 804 connected in parallel.

[0044] The power single tube 804 can be fixed to the heat sink assembly 806 or the heat sink 302 by welding, or connected to the heat sink assembly 806 or the heat sink 302 by other methods.

[0045] like Figure 7 As shown, the bus capacitor 9 is fixed to the housing 7 by bolts through the first mounting interface; the three groups of power components 8 are fixed to the housing 7 by bolts through the second mounting interface 803.

[0046] like Figure 2 and Figure 4 A ceramic plate assembly 210 is provided between the heat sink assembly 806 and the power single tube 804 , and the ceramic plate assembly 210 is connected to the heat sink assembly 806 and the power single tube 804 respectively; the ceramic plate assembly 210 includes a ceramic plate 230 and copper cladding layers 220 located on both sides of the ceramic plate 230 .

[0047] The power single tube 804 is connected to the ceramic plate assembly 210 by welding, and the radiator assembly 806 is connected to the copper clad layer 220 and the ceramic plate assembly 210 by welding, that is, the power single tube 804 is connected to the radiator assembly 806 via the ceramic plate assembly 210 by welding, and the heat of the power single tube 804 is conducted to the radiator assembly 806 through the ceramic plate assembly 210, and the radiator assembly 806 takes away the heat to achieve heat dissipation. The ceramic plate assembly 210 can also achieve insulation between the power single tube 804 and the radiator assembly 806.

[0048] In some specific implementations, the copper cladding layer 220 is provided with stress release holes 221 .

[0049] The power assembly 8 is provided with assembly pins 805, which are composed of the pins of the busbar assembly 100 and the pins of the single tube. The assembly pins 805 are inserted into the vias of the circuit board and welded to realize the connection between the pins of the busbar assembly 100 and the pins of the single tube. Through the design of the pins of the busbar assembly 100, it can be achieved that: 1) the C pole of the upper bridge power single tube 804 is connected to the positive pole of the positive and negative busbar input interface 1020, 2) the E pole of the lower bridge power single tube 804 is connected to the negative pole of the positive and negative busbar input interface 1020, 3) the E pole of the upper bridge power single tube 804 is connected to the C pole of the lower bridge power single tube 804, and connected to the three-phase output interface 801, the E poles of the three groups of upper bridges are respectively connected to the C poles of the three groups of lower bridges, and are respectively connected to the three busbars of the three-phase output interface 801, and the three groups are independent and insulated from each other.

[0050] In some specific implementations, a heat dissipation pin 3021 is provided on one side of the heat dissipation plate 302 facing the housing 301 , so as to improve the heat dissipation efficiency.

[0051] like Figure 3 As shown, the power component 8 includes a busbar component 100, which is arranged above the shell 301; the busbar component 100 includes a U-phase busbar 500, a V-phase busbar 600, a W-phase busbar 700, a DC bus positive plate 900 and a DC bus negative plate 800.

[0052] In some specific embodiments, the DC bus positive plate 900 is provided with a positive plate upper bridge pin 9020 and a positive plate capacitor interface 9030, the positive plate upper bridge pin 9020 is connected to the C pole of the power single tube 804, and the positive plate capacitor interface 9030 is used to connect to the positive busbar of the bus capacitor 9; the DC bus positive plate 900 is provided with a positive plate upper bridge pin 9020, and its three groups of six pins are respectively connected to the C poles of three groups of six power single tubes 804 of the upper bridge, and the DC bus positive plate 900 is also provided with three positive plate capacitor interfaces 9030 for connecting to the positive busbar of the bus capacitor 9.

[0053] The DC bus negative plate 800 is provided with a negative plate lower bridge pin 8010 and a negative plate capacitor interface 8030. The negative plate lower bridge pin 8010 is connected to the E pole of the power single tube 804. The negative plate capacitor interface 8030 is used to connect to the negative busbar of the bus capacitor 9. The DC bus negative plate 800 is provided with a negative plate lower bridge pin 8010, and its three groups of six pins are respectively connected to the E poles of the three groups of six power single tubes 804 of the lower bridge. The DC bus negative plate 800 is also provided with three negative plate capacitor interfaces 8030, which are used to connect to the negative busbar of the bus capacitor 9.

[0054] The U-phase busbar 500 is provided with two U-phase busbar upper bridge pins 501, two U-phase busbar lower bridge pins 502 and a U-phase busbar output interface 503. The U-phase busbar upper bridge pins 501 and the U-phase busbar lower bridge pins 502 are respectively connected to the E pole and the C pole of a group of power single tubes. The U-phase busbar output interface 503 is used to connect to the U-phase input interface of a set of windings of the drive motor;

[0055] The V-phase busbar 600 is provided with two V-phase busbar 600 upper bridge pins, two V-phase busbar 600 lower bridge pins and a V-phase busbar 600 output interface. The V-phase busbar 600 upper bridge pins and the V-phase busbar 600 lower bridge pins are respectively connected to the E pole and the C pole of a group of power single tubes. The V-phase busbar 600 output interface is used to connect to the V-phase input interface of a set of windings of the drive motor;

[0056] The W-phase busbar 700 is provided with two W-phase busbar 700 upper bridge pins, two W-phase busbar 700 lower bridge pins and a W-phase busbar 700 output interface. The W-phase busbar 700 upper bridge pins and the W-phase busbar 700 lower bridge pins are respectively connected to the E pole and C pole of a group of power single tubes. The W-phase busbar 700 output interface is used to connect to the W-phase input interface of a set of windings of a drive motor.

[0057] In some specific embodiments, an insulating film 400 is provided between the DC bus positive plate 900 and the DC bus negative plate 800 ; an insulating film 400 is provided between the DC bus negative plate 800 and the U-phase busbar 500 , the V-phase busbar 600 , and the W-phase busbar 700 . The insulating film 400 is provided with insulating film through holes 410 .

[0058] The DC bus negative plate 800 is provided with a negative plate through hole 8040; the DC bus positive plate 900 is provided with a positive plate through hole 9040; the U-phase busbar 500, the V-phase busbar 600 and the W-phase busbar 700 are all provided with three-phase busbar through holes 418, and three-phase busbar insulating parts 411 are provided between the U-phase busbar 500, the V-phase busbar 600 and the W-phase busbar 700.

[0059] In some specific embodiments, the shell 301 is provided with a sealing groove 306, which includes a first sealing groove and a second sealing groove. The first sealing groove surrounds the first opening, and the second sealing groove surrounds the second opening. The first sealing groove and the second sealing groove are both provided with a seal 305, which can improve the sealing performance of the heat exchange channel.

[0060] In some specific embodiments, the cavity is provided with a partition 3011, and the partition 3011 can be used to divide the heat exchange channel into two or more channels, thereby improving the heat exchange performance of the radiator assembly 806.

[0061] like Figure 5 As shown, the radiator assembly 806 consists of a radiator shell 301, a heat sink 302, fasteners 304, a seal 305, etc. The two heat sinks 302 are respectively located on both sides of the radiator shell 301. A heat sink pin 3021 is provided on one side of the heat sink 302 facing the radiator shell 301. A partition 3011 is provided inside the radiator shell 301. After the heat sink 302 and the radiator shell 301 are connected together by the fasteners 304, the heat sink 302 and the radiator shell 301 form a water channel, the inlet 22 and the outlet 23 are connected, and the water channels on both sides have a symmetrical structure; the seal 305 realizes the sealing between the heat sink 302 and the radiator shell 301.

[0062] In some specific embodiments, the housing 301 is provided with a positioning pin 307, and the heat sink 302 is provided with a pin hole. The positioning pin 307 is plugged and matched with the pin hole, which facilitates the installation of the heat sink 302 and improves the installation efficiency. The number of the pin holes can be multiple, and optionally, the pin holes include a first pin hole 308 and a second pin hole 309, and the number of the positioning pins 307 is two, and the two positioning pins 307 correspond to the first pin hole 308 and the second pin hole 309 one by one, which can improve the accuracy of the installation.

[0063] like Figure 7 As shown, the motor controller provided by the embodiment of the present disclosure includes the power component 8 provided by the embodiment of the present disclosure. Since the motor controller provided by the embodiment of the present disclosure has the same advantages as the power component 8 provided by the embodiment of the present disclosure.

[0064] In some specific implementations, the motor controller includes a control unit, a bus capacitor 9, and a plurality of power components 8; the power components 8 are electrically connected to the control unit and the bus capacitor 9 respectively; and the plurality of power components 8 are centrally symmetrically arranged around the bus capacitor 9. The present disclosure forms a disc-shaped structure of the motor controller by surrounding the bus capacitor 9 with a plurality of power components 8, which can make full use of space, reduce the volume, and lower the height, so that the motor controller can be just integrated at the tail end of the drive motor to form an integrated structure.

[0065] like Figure 7As shown, the three-phase output interface 801 passes through the three-phase busbar via 101 and the via of the current sensor 104, and the pins of the current sensor 104 are welded on the control and drive integrated circuit board 1. The current sensor 104 can detect the current flowing through the three-phase busbar, and send the detected current signal to the control and drive integrated circuit board 1 as a feedback signal.

[0066] Combination Figure 6 and Figure 7 As shown, the motor controller also includes a housing 7, a filter, a DC input connector 3 and a low-voltage signal connector; the housing 7 is formed with a first accommodating cavity and a second accommodating cavity, the bus capacitor 9 and multiple power components 8 are all arranged in the first accommodating cavity, and the bus capacitor 9 and the multiple power components 8 are all connected to the housing 7; the filter and at least part of the DC input connector 3 are arranged in the second accommodating cavity, and the filter is respectively connected to the DC input connector 3 and the bus capacitor 9; the control unit is arranged in the first accommodating cavity, and the low-voltage signal connector is connected to the control unit, which can make full use of the space, reduce the volume, and reduce the height, so that the motor controller can be just integrated at the tail end of the drive motor to form an integrated unit.

[0067] In some specific embodiments, three groups of power components 8 are respectively placed on three sides of the bus capacitor 9, and the positive and negative busbar input interfaces 1020 of the three groups of power components 8 are respectively connected to the second positive and negative interfaces on the three sides of the bus capacitor 9 and are fastened by bolts.

[0068] In some specific embodiments, three groups of power components 8 are placed on three sides of the bus capacitor 9, and the whole is placed in the housing 7. The power components 8 and the bus capacitor 9 are fixedly connected to the bottom of the housing 7 by bolts through the first mounting hole and the second mounting hole respectively; the control and drive integrated circuit board 1 is placed above the bus capacitor 9 and the power components 8, and the pins of the power components 8 are soldered on the pins through the pin holes 102 of the control and drive integrated circuit board 1 to form welding points, and the power single tube 804 is connected to the bus capacitor 9 and the three-phase output interface 801 through the welding points, and the power single tube 804 is connected to the control and drive integrated circuit board 1 at the same time. Under the control and drive of the control and drive integrated circuit board 1, the power single tube 804 realizes the inversion of the DC power from the bus capacitor 9 end into the AC power required for the drive motor, and outputs it to the drive motor through the three-phase output interface 801.

[0069] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in this embodiment can be achieved, and this document does not limit this.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0071] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A power component, characterized in that: include: A heat sink assembly (806) and a plurality of power single tubes (804), wherein the plurality of power single tubes (804) form a three-phase inverter full bridge, and each arm of the three-phase inverter full bridge has one or more power single tubes (804) connected in parallel; The radiator assembly (806) comprises a shell (301) and heat sinks (302) respectively arranged on both sides of the shell (301); part of the power single tubes (804) are arranged on a side of one of the heat sinks (302) away from the shell (301); and part of the power single tubes (804) are arranged on a side of another of the heat sinks (302) away from the shell (301).

2. The power component according to claim 1, characterized in that: The shell (301) is formed with a cavity, and the shell (301) is provided with a first opening and a second opening on opposite sides thereof, respectively. The first opening and the second opening both extend along the length direction of the shell (301), one of the heat dissipation plates (302) covers the first opening and is connected to the shell (301), and the other heat dissipation plate (302) covers the second opening and is connected to the shell (301), so that the radiator assembly (806) forms a heat exchange channel, and the shell (301) is provided with an inlet (22) and an outlet (23) connected to the heat exchange channel.

3. The power assembly according to claim 1, characterized in that: A ceramic plate assembly (210) is provided between the heat sink assembly (806) and the power single tube (804), the ceramic plate assembly (210) being connected to the heat sink assembly (806) and the power single tube (804) respectively, the ceramic plate assembly (210) comprising a ceramic plate (230) and copper cladding layers (220) located on both sides of the ceramic plate (230); And / or, a heat dissipation pin (3021) is provided on a side of the heat dissipation plate (302) facing the housing (301).

4. The power assembly according to claim 1, characterized in that: The power assembly comprises a busbar assembly (100), and the busbar assembly (100) is arranged above the housing (301); The busbar assembly (100) comprises a U-phase busbar (500), a V-phase busbar (600), a W-phase busbar (700), a DC busbar positive plate (900) and a DC busbar negative plate (800).

5. The power assembly according to claim 4, characterized in that: The DC bus positive plate (900) is provided with a positive plate upper bridge pin (9020) and a positive plate capacitor interface (9030), the positive plate upper bridge pin (9020) is connected to the C pole of the power single tube (804), and the positive plate capacitor interface (9030) is used to connect to the positive busbar of the bus capacitor (9); The DC bus negative plate (800) is provided with a negative plate lower bridge pin (8010) and a negative plate capacitor interface (8030), the negative plate lower bridge pin (8010) is connected to the E pole of the power single tube (804), and the negative plate capacitor interface (8030) is used to connect to the negative busbar of the bus capacitor (9); The U-phase busbar (500) is provided with two U-phase busbar upper bridge pins (501), two U-phase busbar lower bridge pins (502) and a U-phase busbar output interface (503); the U-phase busbar upper bridge pins (501) and the U-phase busbar lower bridge pins (502) are respectively connected to the E pole and the C pole of a group of power single tubes; the U-phase busbar output interface (503) is used to connect to the U-phase input interface of a set of windings of a drive motor; The V-phase busbar (600) is provided with two V-phase busbar (600) upper bridge pins, two V-phase busbar (600) lower bridge pins and a V-phase busbar (600) output interface, the V-phase busbar (600) upper bridge pins and the V-phase busbar (600) lower bridge pins are respectively connected to the E pole and the C pole of a group of power single tubes, and the V-phase busbar (600) output interface is used to connect to the V-phase input interface of a set of windings of a drive motor; The W-phase busbar (700) is provided with two W-phase busbar (700) upper bridge pins, two W-phase busbar (700) lower bridge pins and a W-phase busbar (700) output interface. The W-phase busbar (700) upper bridge pins and the W-phase busbar (700) lower bridge pins are respectively connected to the E pole and the C pole of a group of power single tubes. The W-phase busbar (700) output interface is used to connect to the W-phase input interface of a set of windings of a drive motor.

6. The power assembly according to claim 4, characterized in that: An insulating film (400) is provided between the DC bus positive plate (900) and the DC bus negative plate (800); and an insulating film (400) is provided between the DC bus negative plate (800) and the U-phase busbar (500), the V-phase busbar (600), and the W-phase busbar (700).

7. The power assembly according to claim 2, characterized in that: The housing (301) is provided with a sealing groove (306), and the sealing groove (306) comprises a first sealing groove and a second sealing groove, the first sealing groove surrounds the first opening, the second sealing groove surrounds the second opening, and both the first sealing groove and the second sealing groove are provided with a sealing member (305).

8. The power assembly according to claim 2, characterized in that: The cavity is provided with a partition (3011).

9. The power assembly according to claim 1, characterized in that: The housing (301) is provided with a positioning pin (307), the heat dissipation plate (302) is provided with a pin hole, and the positioning pin (307) is plug-fitted into the pin hole.

10. A motor controller, characterized in that: The power component comprises the power component as claimed in any one of claims 1 to 9.

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