Single-tube parallel multiphase power module, new energy electric control system and new energy automobile

Abstract

The invention discloses a single-tube parallel multiphase power module, a new energy electric control system and a new energy automobile, and relates to the technical field of new energy electric control. The module is provided with a first three-phase module integrated with a multiphase first single-tube assembly and a second three-phase module integrated with a multiphase second single-tube assembly; corresponding first / second laminated copper bar assemblies are arranged on the first / second single-tube assemblies in a laminated mode, and first / second phase pole laminated copper bars are arranged on the first / second laminated copper bar assemblies so that different-side function output of the first / second three-phase module can be achieved. And the first phase pole switching laminated copper bar of the second laminated copper bar assembly is electrically connected with the first laminated copper bar assembly, so that the power output of the first three-phase module is realized on the same side of the power output of the second three-phase module. The invention aims to optimize the layout of the power module through the highly integrated design, realize the flexible configuration of the copper bars and improve the parallel current sharing characteristic.

Description

Technical Field

[0001] The present application relates to the field of new energy electronic control technology, and in particular to a single-tube parallel multi-phase power module, a new energy electronic control system, and a new energy vehicle. Background Art

[0002] With the continuous development of new energy electric control technology, users have put forward higher requirements for the modular integration of electric control systems while ensuring economic benefits.

[0003] The traditional dual-electric control system, which uses two independent three-phase power generation modules and a three-phase drive module, has significant technical flaws. On the one hand, the decentralized design of the modules results in the three-phase power generation module and the three-phase drive module typically using independent three-phase full-bridge power modules. The difference in output power leads to different module dimensions, resulting in wasted space when the electric control is arranged. On the other hand, the copper busbar output method of the existing three-phase full-bridge power module is fixed. When the dual electric control output is on the opposite side, an internal transfer copper busbar must be added, which not only takes up a large amount of space but also increases costs. Furthermore, the problems of inductance and current sharing are particularly prominent in the single-tube parallel design. This is especially difficult when there are many parallel tubes, which significantly increases the design difficulty of current sharing and inductance.

[0004] Therefore, how to optimize the power module layout, achieve flexible copper bus configuration and improve parallel current sharing characteristics through highly integrated design has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The main purpose of this application is to provide a single-tube parallel multi-phase power module, a new energy electronic control system and a new energy vehicle, aiming to optimize the power module layout through a highly integrated design to achieve flexible copper bus configuration and improve parallel current sharing characteristics.

[0006] To achieve the above objectives, the present application provides a single-transistor parallel multi-phase power module, the single-transistor parallel multi-phase power module comprising:

[0007] a first three-phase module, the first three-phase module comprising a multi-phase first single tube assembly;

[0008] A plurality of first laminated copper busbar assemblies, each of which is stacked on a first single-tube assembly of a corresponding phase and electrically connected to the first single-tube assembly of the corresponding phase; wherein each of the first laminated copper busbar assemblies is provided with a first phase-pole laminated copper busbar, which is used to serve as a power output end of the first single-tube assembly of the corresponding phase;

[0009] a second three-phase module, the second three-phase module comprising a multi-phase second single tube assembly;

[0010] a plurality of second laminated copper busbar assemblies, each of which is stacked on the second single-tube assembly of the corresponding phase and electrically connected to the second single-tube assembly of the corresponding phase, wherein each of the second laminated copper busbar assemblies is provided with a second phase-pole laminated copper busbar, which is used to serve as the power output end of the second single-tube assembly of the corresponding phase;

[0011] Each of the first laminated copper busbar assemblies is electrically connected via the corresponding first phase pole transfer laminated copper busbar, so that the first single tube assembly of the corresponding phase outputs power in the second three-phase module via the corresponding first phase pole transfer laminated copper busbar.

[0012] In one embodiment, the single-tube parallel multi-phase power module includes a water-cooling plate, wherein the water-cooling plate is provided with a welding surface and a heat dissipation surface provided opposite to the welding surface;

[0013] The first single-tube assembly of each phase in the first three-phase module and the second single-tube assembly of each phase in the second three-phase module are welded and fixed to the welding surface;

[0014] Heat dissipation array pins are provided on the heat dissipation surface in the position area corresponding to the first single-tube component of each phase, and in the position area corresponding to the second single-tube component of each phase, wherein the heat dissipation surface is also provided with a reinforcing rib structure distributed between adjacent heat dissipation array pins.

[0015] In one embodiment, the single-transistor parallel multi-phase power module includes a copper busbar frame assembly;

[0016] The copper busbar frame assembly is arranged at a position area of ​​the welding surface corresponding to the reinforcing rib structure;

[0017] After the self-tapping screw holes of the copper busbar frame assembly correspond one-to-one with the self-tapping screw holes of the water-cooling plate, the copper busbar frame assembly is fixed to the welding surface by self-tapping screws.

[0018] In one embodiment, the copper busbar frame assembly includes:

[0019] a negative copper busbar, the negative copper busbar being longitudinally arranged along a side close to the first three-phase module;

[0020] a positive copper busbar, the positive copper busbar being longitudinally arranged along a side close to the second three-phase module;

[0021] A plastic body is provided, wherein the positive copper bar and the negative copper bar are covered and fixed to form an integrated structure by injection molding.

[0022] In one embodiment, the plastic body comprises:

[0023] A plurality of first laminated copper busbar mounting points, each of which is equipped with a corresponding first phase pole laminated copper busbar;

[0024] A plurality of second laminated copper busbar mounting points, each of which is equipped with a corresponding second phase pole laminated copper busbar;

[0025] A plurality of transfer copper busbar installation points, each of which is equipped with a corresponding first phase pole transfer laminated copper busbar;

[0026] Multiple laminated copper busbar welding points, each of the laminated copper busbar welding points is equally divided into a first laminated copper busbar welding point sequence and a second laminated copper busbar welding point sequence arranged in parallel, the first laminated copper busbar welding point sequence is linearly arranged along the inner edge of the negative copper busbar, and the second laminated copper busbar welding point sequence is linearly arranged along the inner edge of the positive copper busbar.

[0027] In one embodiment, the first laminated copper busbar assembly further includes a first plastic-coated body, a first positive electrode laminated copper busbar, a first negative electrode laminated copper busbar, and a first single-tube temperature detection component;

[0028] The first overmolded body is formed by encapsulating and fixing the first phase electrode laminated copper busbar, the first positive electrode laminated copper busbar, and the first negative electrode laminated copper busbar into an integrated structure through injection molding, and the second single-tube temperature detection component is fixed to a side of the first overmolded body facing the first single-tube assembly by heat riveting;

[0029] The first positive electrode laminated copper busbar and the first negative electrode laminated copper busbar are respectively connected to the laminated copper busbar welding points at corresponding positions.

[0030] In one embodiment, the second laminated copper busbar assembly further includes a second plastic-coated body, a second positive electrode laminated copper busbar, a second negative electrode laminated copper busbar, and a second single-tube temperature detection component;

[0031] The second overmolded body is formed by injection molding to cover and fix the first phase pole transfer laminated copper busbar, the second phase pole laminated copper busbar, the second positive electrode laminated copper busbar, and the second negative electrode laminated copper busbar into an integrated structure, and the second single-tube temperature detection component is fixed to the side of the second overmolded body facing the second single-tube assembly by heat riveting;

[0032] The second positive electrode laminated copper busbar and the second negative electrode laminated copper busbar are respectively connected to the laminated copper busbar welding points at corresponding positions.

[0033] In one embodiment, both the first single-tube component and the second single-tube component are IGBT single-tube components.

[0034] In addition, to achieve the above objectives, the present application also provides a new energy electric control system, which includes the single-tube parallel multi-phase power module described in any of the above items.

[0035] In addition, to achieve the above-mentioned purpose, the present application also provides a new energy vehicle, which includes the above-mentioned new energy electric control system.

[0036] The single-tube parallel multi-phase power module provided in the present application optimizes the layout of the power modules, realizes flexible configuration of the copper busbars and improves the parallel current sharing characteristics through a highly integrated design. Specifically, the present application adopts a hybrid parallel technology to deeply integrate the first three-phase module and the second three-phase module, and stacks a corresponding first stacked copper busbar assembly on the first single-tube assembly of each phase in the first three-phase module, which not only realizes a compact electrical connection between each first stacked copper busbar assembly and the first single-tube assembly of the corresponding phase, but also greatly compresses the module volume of the single-tube parallel multi-phase power module by using the first phase pole stacked copper busbar built into the first stacked copper busbar assembly as the power output of the first three-phase module; at the same time, a similar stacked copper busbar design is also adopted in the second three-phase module, and By electrically connecting the first-phase transfer busbar built into the second laminated copper busbar assembly to the corresponding first laminated copper busbar assembly, the power output of the first three-phase module is achieved on the same side as the power output of the second three-phase module. This enables the entire single-transistor parallel multi-phase power module to simultaneously output power on both the same side and opposite sides. This overcomes the technical limitations of traditional power modules that require additional internal transfer busbars due to a single output mode. It supports compatible operation of three-phase and six-phase systems and can flexibly adapt to the installation requirements of different application scenarios, greatly enhancing the configuration flexibility of the single-transistor parallel multi-phase power module. In addition, the compact laminated copper busbar architecture achieves current sharing between the single-transistor assemblies, improving the output efficiency of the entire single-transistor parallel multi-phase power module. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] Figure 1 This is a structural block diagram of the first embodiment of the single-tube parallel multi-phase power module of the present application;

[0040] Figure 2 This is an exploded diagram of a single-tube parallel multi-phase power module involved in an embodiment of the present application;

[0041] Figure 3 Schematic diagram of the heat dissipation surface of the water-cooling plate involved in the embodiment of the present application;

[0042] Figure 4 Schematic diagram of the copper busbar frame assembly involved in the embodiment of the present application;

[0043] Figure 5 Schematic diagram of the first laminated copper busbar assembly involved in the embodiment of the present application;

[0044] Figure 6 Schematic diagram of a second laminated copper busbar assembly involved in an embodiment of the present application;

[0045] Figure 7 This is a schematic diagram of the structure of the first / second phase pole laminated copper busbar involved in the embodiment of the present application;

[0046] Figure 8 This is a schematic diagram of an IGBT single-tube assembly involved in an embodiment of the present application;

[0047] Figure 9 This is a schematic diagram of current flow involved in the embodiment of the present application;

[0048] Figure 10 It is a structural diagram of the new energy vehicle involved in the embodiment of the present application.

[0049] Description of Figure Numbers:

[0050] 100, first three-phase module; Ti, first single-tube assembly; 10_i, first laminated copper busbar assembly; 11, first phase-pole laminated copper busbar; 12, first plastic-coated body; 13, first positive-pole laminated copper busbar; 14, first negative-pole laminated copper busbar; 15, first single-tube temperature detector; 200, second three-phase module; Si, second single-tube assembly; 20_i, second laminated copper busbar assembly; 21, second phase-pole laminated copper busbar; 22, first phase-pole transfer laminated copper busbar; 23. Second plastic-coated body; 24. Second positive laminated copper busbar; 25. Second negative laminated copper busbar; 26. Second single-tube temperature detection component; 30. Copper busbar frame assembly; 31. Negative copper busbar; 32. Positive copper busbar; 33. Plastic body; 34. First laminated copper busbar mounting point; 35. Second laminated copper busbar mounting point; 36. Transfer copper busbar mounting point; 37. Laminated copper busbar welding point; 40. Water cooling plate; 41. Heat dissipation array pins; 42. Reinforcement rib structure.

[0051] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0052] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0053] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0055] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.

[0056] The electronic control system of a new energy vehicle is a core component of vehicle performance and efficiency. The three-phase generator module and the three-phase drive module are closely related, but each plays a distinct role. The three-phase generator module is primarily responsible for converting mechanical energy into electrical energy to charge the battery or drive other electrical devices; the three-phase drive module is responsible for converting battery power into three-phase AC power to drive the motor. As electronic control systems move toward higher integration, particularly in dual-control and all-in-one systems, further improving power density, optimizing space utilization, and reducing costs have become key technical challenges.

[0057] Currently, the three-phase power generation module and three-phase drive module in a dual-electric control system usually use two independent power modules. This design has the following major problems:

[0058] 1. Decentralized module design leads to space waste. Specifically, existing three-phase power generation modules and three-phase drive modules typically use independent three-phase full-bridge power modules. However, due to the different output power of the two, the module dimensions are often inconsistent, making it difficult to achieve compactness when arranging the electronic control system. This results in space waste and is not conducive to the miniaturization and lightweighting of the system.

[0059] 2. Fixed output busbars increase cost and size. Specifically, the output busbars of traditional three-phase modules are typically fixed. When a dual-control system requires outputs on opposite sides (e.g., the output directions of the three-phase generator module and the three-phase drive module are different), an additional busbar must be added inside the control system. This not only takes up valuable installation space but also increases system complexity and manufacturing costs.

[0060] 3. Stray inductance and current sharing issues when paralleling single transistors. Specifically, in high-current applications, paralleling single transistors is a common method for increasing power capabilities. However, increasing the number of parallel transistors can lead to serious current sharing and stray inductance issues. Improper design can lead to uneven current distribution, increased switching losses, and even compromise system reliability and efficiency.

[0061] To address the above problems, this patent proposes a highly integrated single-tube parallel multi-phase power module solution. By deeply integrating the three-phase power generation module and the three-phase drive module, optimizing the copper bus layout and parallel structure, the electronic control system can be platform-based, miniaturized, highly efficient and low-cost.

[0062] The present application embodiment provides a single-tube parallel multi-phase power module, referring to Figure 1 As shown, Figure 1 This is a structural block diagram of the first embodiment of the single-tube parallel multi-phase power module of the present application. The single-tube parallel multi-phase power module provided in the present application includes:

[0063] A first three-phase module 100 includes a multi-phase first single tube assembly Ti; a plurality of first laminated copper busbar assemblies 10_i, each of which is stacked on the first single tube assembly Ti of the corresponding phase and electrically connected to the first single tube assembly Ti of the corresponding phase; wherein each first laminated copper busbar assembly 10_i is provided with a first phase pole laminated copper busbar 11, which is used to serve as the power output end of the first single tube assembly Ti of the corresponding phase.

[0064] In this embodiment, referring to Figures 1 to 2The first three-phase module 100 provided in the present application may include a multi-phase first single tube assembly Ti. Next, corresponding first laminated copper busbar assemblies 10_i are stacked on the multi-phase first single tube assembly Ti, and the welding pins of each phase first single tube assembly Ti are welded and fixed to the assembly pins of the corresponding first laminated copper busbar assembly 10_i to achieve a highly compact integrated design. In particular, the first phase pole laminated copper busbar 11 provided in each first laminated copper busbar assembly 10_i can directly serve as the power output end of the first single tube assembly Ti of the corresponding phase, providing a power output function for the first three-phase module 100. The laminated arrangement also effectively reduces the parasitic inductance of the power circuit. The low impedance characteristics of the first laminated copper busbar improve the current sharing performance of the parallel first single tube assemblies Ti.

[0065] A second three-phase module 200 includes a multi-phase second single tube assembly Si; a plurality of second laminated copper busbar assemblies 20_i, each of which is stacked on the second single tube assembly Si of the corresponding phase and electrically connected to the second single tube assembly Si of the corresponding phase. Each second laminated copper busbar assembly 20_i is provided with a second phase-pole laminated copper busbar 21, which serves as the power output end of the second single tube assembly Si of the corresponding phase. Each first laminated copper busbar assembly 10_i is electrically connected via a corresponding first phase-pole transfer laminated copper busbar 22, so that the first single tube assembly Ti of the corresponding phase can achieve power output in the second three-phase module 200 via the corresponding first phase-pole transfer laminated copper busbar 22.

[0066] In this embodiment, referring to Figures 1 to 2The second three-phase module 200 provided in the present application may include a multi-phase second single-tube assembly Si; next, a corresponding second laminated copper busbar assembly 20_i is stacked on the multi-phase second single-tube assembly Si to achieve a highly integrated power output architecture. Specifically, after the welding pins of the second single-tube assembly Si of each phase are welded and fixed to the assembly pins of the corresponding second laminated copper busbar assembly 20_i, the second phase-pole laminated copper busbar 21 provided in the second laminated copper busbar assembly 20_i can be directly used as the power output end of the second single-tube assembly Si of the corresponding phase, thereby providing a power output function for the second three-phase module 200; and a first phase-pole switching laminated copper busbar 22 is also provided in the second laminated copper busbar assembly 20_i, and the first phase-pole switching laminated copper busbar 22 is connected to the corresponding first laminated copper busbar. The row assembly 10_i is electrically connected to transfer the power output of the first three-phase module 100 to the same side as the power output of the second three-phase module 200. This enables the single-transistor parallel multiphase power module to have flexible configuration capabilities for outputs on the same side or opposite sides of both the first three-phase module 100 and the second three-phase module 200. This overcomes the technical limitation of traditional power modules that require additional internal transfer copper busbars due to a single output mode. It simplifies the electrical connection structure of the entire single-transistor parallel multiphase power module and reduces the complex wiring design in traditional power modules. The stacked arrangement effectively reduces the parasitic inductance of the power circuit. The low impedance characteristics of the second stacked copper busbar improve the current sharing performance of the parallel second single-transistor assembly Si, thereby achieving a highly compact integrated design of the entire single-transistor parallel multiphase power module.

[0067] It should be noted that the first three-phase module 100 and the second three-phase module 200 provided in the present application can select different numbers of first single-tube components Ti and second single-tube components Si according to specific power requirements to achieve power segment expansion; at the same time, the first three-phase module 100 and the second three-phase module 200 can be divided into two three-phase modules according to their functions, or the first three-phase module 100 and the second three-phase module 200 can be merged into a whole large three-phase module to achieve compatibility between the three-phase module and the six-phase module.

[0068] Further, in some feasible embodiments, referring to Figure 3 The single-tube parallel multi-phase power module includes a water-cooling plate 40, which is provided with a welding surface and a heat dissipation surface arranged opposite to the welding surface; the first single-tube assembly Ti of each phase in the first three-phase module 100 and the second single-tube assembly Si of each phase in the second three-phase module 200 are welded and fixed to the welding surface; heat dissipation array pins 41 are provided on the heat dissipation surface in the position area corresponding to the first single-tube assembly Ti of each phase and the position area corresponding to the second single-tube assembly Si of each phase; wherein, the heat dissipation surface is also provided with a reinforcing rib structure 42 distributed between adjacent heat dissipation array pins 41.

[0069] In this embodiment, referring to Figures 2 to 3 As shown, the single-tube parallel multi-phase power module provided in the present application may also include a water-cooling plate 40, which is provided with a welding surface and a heat dissipation surface provided opposite to the welding surface. The welding surface of the water-cooling plate 40 is provided toward the first three-phase module 100 and the second three-phase module 200 laid in parallel, so as to weld and fix the first single-tube components Ti of each phase in the first three-phase module 100 and the second single-tube components Si of each phase in the second three-phase module 200, so that the first / second single-tube components integrated on the welding surface can form a direct heat conduction path through the heat dissipation array pins 41 provided on the heat dissipation surface corresponding to the position area of ​​each first / second single-tube component, thereby maximizing the heat dissipation efficiency of the water-cooling plate 40; in addition, a reinforcing rib structure 42 distributed between adjacent heat dissipation array pins 41 is further provided on the heat dissipation surface. The design of this distributed reinforcing rib can not only optimize the coolant flow field distribution, but also improve the structural rigidity of the water-cooling plate 40, reduce the warping change of the water-cooling plate 40 during the welding process, and improve the reliability of the entire single-tube parallel multi-phase power module.

[0070] It should be noted that the water cooling plate 40 may be a nickel-plated water cooling plate 40 .

[0071] Furthermore, in some other feasible embodiments, referring to Figure 4 The single-tube parallel multi-phase power module includes a copper busbar frame assembly 30; the copper busbar frame assembly 30 is arranged in the position area of ​​the welding surface corresponding to the reinforcing rib structure 42; after the self-tapping screw holes of the copper busbar frame assembly 30 correspond one-to-one with the self-tapping screw holes of the water cooling plate 40, the copper busbar frame assembly 30 is fixed to the welding surface by self-tapping screws.

[0072] In this embodiment, by arranging the copper busbar frame assembly 30 in the position area corresponding to the reinforcing rib structure 42 on the welding surface of the water-cooled plate 40, and adopting the self-tapping screw hole precise alignment and fastening connection method, the coordinated optimization of the structural strength and electrical connection of the power module is achieved. Among them, the corresponding arrangement of the copper busbar frame assembly 30 and the reinforcing rib structure 42 not only ensures the stability of the mechanical support, but also simplifies the assembly process through the direct fixing method of the self-tapping screws. This integrated design not only improves the overall seismic resistance and thermal cycle tolerance of the single-tube parallel multi-phase power module, but also ensures low thermal resistance contact between the copper busbar frame assembly 30 and the water-cooled plate 40.

[0073] Further, in some feasible embodiments, referring to Figure 4The copper busbar frame assembly 30 includes: a negative copper busbar 31, which is longitudinally arranged along a side close to the first three-phase module 100; a positive copper busbar 32, which is longitudinally arranged along a side close to the second three-phase module 200; and a plastic body 33, which is formed by injection molding to cover and fix the positive copper busbar 32 and the negative copper busbar 31 into an integrated structure.

[0074] In this embodiment, referring to Figure 4 The positive and negative copper busbars 32 and 31 are integrated into a single structure through an injection-molded plastic body 33, significantly improving the mechanical stability and electrical connection reliability of the multi-directional power module. The positive copper busbar 32 is arranged longitudinally along the side closest to the second three-phase module 200, while the negative copper busbar 31 is arranged longitudinally along the side closest to the first three-phase module 100, forming an optimized current path and effectively reducing parasitic parameters in the power circuit.

[0075] Furthermore, in some other feasible embodiments, referring to Figure 4 The plastic body 33 includes: a plurality of first laminated copper busbar mounting points 34, each of which is mounted with a corresponding first phase-pole laminated copper busbar 11; a plurality of second laminated copper busbar mounting points 35, each of which is mounted with a corresponding second phase-pole laminated copper busbar 21; a plurality of transfer copper busbar mounting points 36, each of which is mounted with a corresponding first phase-pole transfer laminated copper busbar 22; a plurality of laminated copper busbar welding points 37, each of which is equally divided into a sequence of parallel-arranged first laminated copper busbar welding points 37 and a sequence of second laminated copper busbar welding points 37, the sequence of the first laminated copper busbar welding points 37 being linearly arranged along the inner edge of the negative copper busbar 31, and the sequence of the second laminated copper busbar welding points 37 being linearly arranged along the inner edge of the positive copper busbar 32.

[0076] In this embodiment, the precise structural design of the plastic body 33 enables efficient integration and reliable connection of single-tube parallel multi-phase power modules. Specifically, the rational layout of the first-layer copper busbar mounting points 34, the second-layer copper busbar mounting points 35, and the transfer copper busbar mounting points 36, combined with the linear arrangement of the first / second-layer copper busbar welding points 37 along the inner edges of the negative / positive copper busbars 32, creates a clearly defined electrical connection system. This maintains symmetrical and independent routing paths for each phase power circuit, effectively optimizing current distribution while ensuring precise positioning and reliable insulation at all connection points.

[0077] Further, in some feasible embodiments, referring to Figure 5The first laminated copper busbar assembly 10_i also includes a first plastic-coated body 12, a first positive laminated copper busbar 13, a first negative laminated copper busbar 14 and a first single-tube temperature detection component 15; the first plastic-coated body 12 covers and fixes the first phase laminated copper busbar 11, the first positive laminated copper busbar 13 and the first negative laminated copper busbar 14 into an integrated structure through injection molding, and the second single-tube temperature detection component 26 is hot-riveted to the side of the first plastic-coated body 12 facing the first single-tube assembly Ti; the first positive laminated copper busbar 13 and the first negative laminated copper busbar 14 are respectively connected to the laminated copper busbar welding points 37 at corresponding positions.

[0078] In this embodiment, referring to Figure 5 , the first laminated copper busbar assembly 10_i provided in the present application is highly integrated with the first phase-pole laminated copper busbar 11, the first positive-pole laminated copper busbar 13, the first negative-pole laminated copper busbar 14 and the first single-tube temperature detection component 15 through the first overmolded body 12. Specifically, the injection-molded first overmolded body 12 not only realizes the insulation sealing and structural integration of each conductive component, but also fixes the first single-tube temperature detection component 15 to the side of the first overmolded body 12 facing the first single-tube component Ti through an optimized hot riveting fixing method, thereby realizing reliable thermal coupling between the first single-tube temperature detection component 15 and the first single-tube component Ti; the first positive-pole laminated copper busbar 13 and the first negative-pole laminated copper busbar 14 are respectively fixedly welded to the laminated copper busbar welding points 37 at corresponding positions to form a low-impedance current path, wherein the first phase-pole laminated copper busbar 11, the first positive-pole laminated copper busbar 13 and the first negative-pole laminated copper busbar 14 are designed to be stacked in space to reduce the parasitic inductance of the entire loop; at the same time, referring to Figure 7 The first phase pole laminated copper bus 11 is designed with grooves Y2 and round holes Y1 to ensure that the current flows from the input end to the pin needle (i.e. Figure 7 The paths marked as Pin1 and the symbol of Pin1) are consistent to achieve current sharing of the first single tube component Ti in parallel, and the pin needle (i.e., the component pin of the first laminated copper busbar component 10_i) is welded and fixed to the welding pin of the IGBT single tube component.

[0079] Furthermore, in other feasible embodiments, the second laminated copper busbar assembly 20_i also includes a second plastic-coated body 23, a second positive laminated copper busbar 24, a second negative laminated copper busbar 25 and a second single-tube temperature detection component 26; the second plastic-coated body 23 uses injection molding to cover and fix the first phase pole transfer laminated copper busbar 22, the second phase pole laminated copper busbar 21, the second positive laminated copper busbar 24 and the second negative laminated copper busbar 25 into an integrated structure, and the second single-tube temperature detection component 26 is hot-riveted to the side of the second plastic-coated body 23 facing the second single-tube assembly Si; the second positive laminated copper busbar 24 and the second negative laminated copper busbar 25 are respectively connected to the laminated copper busbar welding points 37 at corresponding positions.

[0080] In this embodiment, referring to Figure 6 The second laminated copper busbar assembly 20_i provided in the present application highly integrates the first phase pole transfer laminated copper busbar 22, the second phase pole laminated copper busbar 21, the second positive pole laminated copper busbar 24, the second negative pole laminated copper busbar 25 and the second single-tube temperature detection component 26 through the second plastic-coated body 23. Specifically, the injection-molded first overmolded body 12 not only realizes the insulation sealing and structural integration of each conductive component, but also fixes the second single-tube temperature detection component 26 to the side of the second overmolded body 23 facing the second single-tube component Si through an optimized hot riveting fixing method, thereby realizing reliable thermal coupling between the second single-tube temperature detection component 26 and the second single-tube component Si; the second positive electrode laminated copper busbar 24 and the second negative electrode laminated copper busbar 25 are respectively fixedly welded to the laminated copper busbar welding points 37 at corresponding positions to form a low-impedance current path, wherein the first phase pole transfer laminated copper busbar 22, the second phase pole laminated copper busbar 21, the second positive electrode laminated copper busbar 24 and the second negative electrode laminated copper busbar 25 are spatially laminated to reduce the parasitic inductance of the entire loop; at the same time, referring to Figure 7 The second phase pole laminated copper bus 21 is designed with grooves Y2 and holes Y1 to ensure that the current flows from the input end to the pin (i.e. Figure 7 The path marked as Pin1 and the symbol of Pin1) is consistent to achieve current sharing of the second single tube component Si in parallel, and the pin needle (that is, the component pin of the second laminated copper busbar component 20_i) is welded and fixed to the welding pin of the IGBT single tube component.

[0081] Furthermore, in some feasible embodiments, the first single-tube component Ti and the second single-tube component Si are both IGBT single-tube components.

[0082] In this embodiment, referring to Figure 8The IGBT single-tube assembly includes a ceramic sheet M1 and an IGBT single-tube M3. The ceramic sheet M1 is fixed to the IGBT single-tube M3 via solder M1. Pin 3 of the IGBT single-tube M3 can be understood as the soldering pin of the IGBT single-tube assembly. The IGBT single-tube assembly is soldered to the nickel-plated water cooling plate 40 via reflow soldering to achieve mechanical connection and heat dissipation.

[0083] In a specific embodiment, referring to Figure 9 The electrical connection between the IGBT single-tube assemblies is achieved through the laminated copper busbar structure. The entire current loop is: positive copper busbar 32 of the copper busbar frame assembly 30 → positive laminated copper busbar welding point 37 (i.e., the laminated copper busbar welding point 37 for welding the first positive laminated copper busbar 13 and the second positive laminated copper busbar 24) → first / second positive laminated copper busbar → first / second positive laminated copper busbar pin → upper bridge IGBT single-tube pin → first / second phase pole laminated copper busbar pin → first / second phase pole laminated copper busbar → lower bridge IGBT single-tube pin → negative pole laminated copper busbar pin → negative pole laminated copper busbar welding point 37 → negative copper busbar 31 of the copper busbar frame assembly 30.

[0084] In summary, the single-tube parallel multi-phase power module provided in the present application optimizes the layout of the power module, realizes flexible configuration of the copper busbar, and improves the parallel current sharing characteristics through a highly integrated design. Specifically, the present application adopts a hybrid parallel technology to deeply integrate the first three-phase module 100 and the second three-phase module 200, and a corresponding first stacked copper busbar assembly 10_i is stacked on the first single-tube assembly Ti of each phase in the first three-phase module 100. This not only realizes a compact electrical connection between each first stacked copper busbar assembly 10_i and the first single-tube assembly Ti of the corresponding phase, but also greatly compresses the module volume of the single-tube parallel multi-phase power module by using the first phase pole stacked copper busbar 11 built into the first stacked copper busbar assembly 10_i as the power output of the first three-phase module 100; at the same time, a similar method is also adopted in the second three-phase module 200. The stacked copper busbar design utilizes a first-phase transfer busbar 22 built into the second stacked copper busbar assembly 20_i, electrically connecting it to the corresponding first stacked copper busbar assembly 10_i. This allows the power output of the first three-phase module 100 to be delivered to the same side as the power output of the second three-phase module 200. This enables the entire single-transistor parallel multiphase power module to deliver both same-side and opposite-side power outputs. This overcomes the technical limitations of traditional power modules, which require internal transfer busbars due to their single output mode, and supports compatible operation with both three-phase and six-phase systems. It can also flexibly adapt to the installation requirements of various application scenarios, significantly enhancing the configuration flexibility of the single-transistor parallel multiphase power module. Furthermore, the compact stacked copper busbar architecture enables current sharing between the individual transceiver assemblies, improving the output efficiency of the entire single-transistor parallel multiphase power module.

[0085] In addition, the present application also provides a new energy electric control system, which includes any of the above-mentioned single-tube parallel multi-phase power modules.

[0086] In addition, this application also provides a new energy vehicle. Figure 10 , Figure 10 Schematic diagram of the structure of a new energy vehicle according to an embodiment of the present application. The new energy vehicle according to the embodiment of the present application may be a device for locally running a variable refresh rate control method.

[0087] like Figure 10 As shown, the new energy vehicle of the embodiment of the present application may include: a new energy electric control system; or a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wi-Fi interface).

[0088] The memory 1005 is provided on the main body of the new energy vehicle. The memory 1005 stores a program that performs corresponding operations when executed by the processor 1001. The memory 1005 is also used to store parameters for use with the new energy vehicle. The memory 1005 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk storage. The memory 1005 can also optionally be a storage device independent of the aforementioned processor 1001.

[0089] Those skilled in the art will understand that Figure 10 The new energy vehicle structure shown in the figure does not constitute a limitation on the new energy vehicle and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0090] like Figure 10 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a driver for a single-tube parallel multi-phase power module.

[0091] exist Figure 10 In the new energy vehicle shown, the processor 1001 can be used to call the driver program of the single-tube parallel multi-phase power module stored in the memory 1005.

[0092] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0093] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0094] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course, by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM, magnetic disk, or optical disk as mentioned above, and includes a number of instructions for enabling a new energy vehicle to execute the methods described in each embodiment of the present application.

[0095] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A single-tube parallel multi-phase power module, characterized in that: The single-tube parallel multi-phase power module includes: a first three-phase module, the first three-phase module comprising a multi-phase first single tube assembly; A plurality of first laminated copper busbar assemblies, each of which is stacked on a first single-tube assembly of a corresponding phase and electrically connected to the first single-tube assembly of the corresponding phase; wherein each of the first laminated copper busbar assemblies is provided with a first phase-pole laminated copper busbar, which is used to serve as a power output end of the first single-tube assembly of the corresponding phase; a second three-phase module, the second three-phase module comprising a multi-phase second single tube assembly; a plurality of second laminated copper busbar assemblies, each of which is stacked on the second single-tube assembly of the corresponding phase and electrically connected to the second single-tube assembly of the corresponding phase, wherein each of the second laminated copper busbar assemblies is provided with a second phase-pole laminated copper busbar, which is used to serve as the power output end of the second single-tube assembly of the corresponding phase; Each of the first laminated copper busbar assemblies is electrically connected via the corresponding first phase pole transfer laminated copper busbar, so that the first single tube assembly of the corresponding phase outputs power in the second three-phase module via the corresponding first phase pole transfer laminated copper busbar.

2. The single-transistor parallel multi-phase power module according to claim 1, characterized in that: The single-tube parallel multi-phase power module includes a water-cooling plate, wherein the water-cooling plate is provided with a welding surface and a heat dissipation surface arranged opposite to the welding surface; The first single-tube assembly of each phase in the first three-phase module and the second single-tube assembly of each phase in the second three-phase module are welded and fixed to the welding surface; Heat dissipation array pins are provided on the heat dissipation surface in the position area corresponding to the first single-tube component of each phase, and in the position area corresponding to the second single-tube component of each phase, wherein the heat dissipation surface is also provided with a reinforcing rib structure distributed between adjacent heat dissipation array pins.

3. The single-transistor parallel multi-phase power module according to claim 2, characterized in that: The single-tube parallel multi-phase power module includes a copper busbar frame assembly; The copper busbar frame assembly is arranged at a position area of ​​the welding surface corresponding to the reinforcing rib structure; After the self-tapping screw holes of the copper busbar frame assembly correspond one-to-one with the self-tapping screw holes of the water-cooling plate, the copper busbar frame assembly is fixed to the welding surface by self-tapping screws.

4. The single-transistor parallel multi-phase power module according to claim 3, characterized in that: The copper busbar frame assembly includes: a negative copper busbar, the negative copper busbar being longitudinally arranged along a side close to the first three-phase module; a positive copper busbar, the positive copper busbar being longitudinally arranged along a side close to the second three-phase module; A plastic body is provided, wherein the positive copper bar and the negative copper bar are covered and fixed to form an integrated structure by injection molding.

5. The single-transistor parallel multi-phase power module according to claim 4, wherein the plastic body comprises: A plurality of first laminated copper busbar mounting points, each of which is equipped with a corresponding first phase pole laminated copper busbar; A plurality of second laminated copper busbar mounting points, each of which is equipped with a corresponding second phase pole laminated copper busbar; A plurality of transfer copper busbar installation points, each of which is equipped with a corresponding first phase pole transfer laminated copper busbar; Multiple laminated copper busbar welding points, each of the laminated copper busbar welding points is equally divided into a first laminated copper busbar welding point sequence and a second laminated copper busbar welding point sequence arranged in parallel, the first laminated copper busbar welding point sequence is linearly arranged along the inner edge of the negative copper busbar, and the second laminated copper busbar welding point sequence is linearly arranged along the inner edge of the positive copper busbar.

6. The single-transistor parallel multi-phase power module according to claim 5, characterized in that: The first laminated copper busbar assembly further includes a first plastic-coated body, a first positive electrode laminated copper busbar, a first negative electrode laminated copper busbar, and a first single-tube temperature detection component; The first overmolded body is formed by encapsulating and fixing the first phase electrode laminated copper busbar, the first positive electrode laminated copper busbar, and the first negative electrode laminated copper busbar into an integrated structure through injection molding, and the second single-tube temperature detection component is fixed to a side of the first overmolded body facing the first single-tube assembly by heat riveting; The first positive electrode laminated copper busbar and the first negative electrode laminated copper busbar are respectively connected to the laminated copper busbar welding points at corresponding positions.

7. The single-transistor parallel multi-phase power module according to claim 5, characterized in that: The second laminated copper busbar assembly further includes a second plastic-coated body, a second positive electrode laminated copper busbar, a second negative electrode laminated copper busbar, and a second single-tube temperature detection component; The second overmolded body is formed by injection molding to cover and fix the first phase pole transfer laminated copper busbar, the second phase pole laminated copper busbar, the second positive electrode laminated copper busbar, and the second negative electrode laminated copper busbar into an integrated structure, and the second single-tube temperature detection component is fixed to the side of the second overmolded body facing the second single-tube assembly by heat riveting; The second positive electrode laminated copper busbar and the second negative electrode laminated copper busbar are respectively connected to the laminated copper busbar welding points at corresponding positions.

8. The single-transistor parallel multi-phase power module according to claim 1, wherein: The first single-tube component and the second single-tube component are both IGBT single-tube components.

9. A new energy electric control system, characterized in that: The new energy electric control system includes the single-tube parallel multi-phase power module according to any one of claims 1 to 8.

10. A new energy vehicle, characterized in that: The new energy vehicle includes the new energy electric control system according to claim 9.

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