CN219227441U - Special double-driving system for hybrid power gearbox - Google Patents

Abstract

The utility model relates to a special double-driving system for a hybrid power gearbox, which comprises a current stabilizer, a high-frequency inversion assembly, a boosting inductive body assembly, a DC/DC converter and an AC output assembly which are arranged in an upper cavity of a middle shell, and a control unit arranged in a lower cavity of the middle shell. The high-frequency inversion assembly comprises a capacitor body, wherein the capacitor body is provided with a boosting capacitor body, an inversion capacitor body, a group of leakage capacitors connected with the boosting capacitor body in parallel and two groups of leakage capacitors connected with the inversion capacitor body in parallel. Four high magnetic conduction devices, four leakage capacitors and two groups of leakage capacitors integrated in the capacitor body and connected with the inverter capacitor body in parallel form a filter configuration of the CLCLC. And cooling water channels are paved in the DCDC arrangement area, the inductance arrangement area and the film capacitance arrangement area of the middle shell. Compared with the prior art, the utility model introduces the booster circuit, improves the working efficiency, has high EMC, good heat dissipation effect and compatibility.

Description

Special double-driving system for hybrid power gearbox

Technical Field

The utility model relates to the field of automobile electric drive systems, in particular to a special double-drive system for a hybrid power gearbox.

Background

The hybrid gearbox is a transmission system which can couple the power of an engine and the power of a driving motor together in a certain mode and can realize speed change and torque change. The traditional motor controller can increase the working current of the motor controller under the same power due to lower voltage from a battery, so that the loss of the motor controller is increased; the dual-motor resultant force driven dual-drive system greatly improves the working efficiency, but the traditional dual-drive system is generally not integrated with a DC/DC converter and a boost circuit, and has low integration level; the double-driving system with high integration level has more integrated devices and needs to be installed on the special gearbox of the hybrid power, so that the whole vehicle has more severe requirements on the external envelope size, and the devices all need to dissipate heat, so that the design requirement on the cooling structure is higher. In the existing part of dual driving, although the dual driving system is provided with a booster circuit, the dual driving system is generally not compatible with the dual driving system without the booster circuit.

The inventor also designed a double motor controller with BOOST function, but the following drawbacks were found: (1) The size of the controller in the width direction is larger, so that the requirement of the outer wrapping of a client cannot be met; (2) The EMC pre-processing device of the controller adopts CLC configuration (namely configuration of a pair of leakage capacitors, a high magnetic conductor and a pair of leakage capacitors), so that electromagnetic compatibility (Electro Magnetic Compatibility, EMC) is poor; (3) The controller is not provided with a cooling water channel at the position where the supporting capacitor is assembled, so that the supporting capacitor cannot be effectively radiated, and the performance of the whole machine is influenced due to overheat of the supporting capacitor.

Therefore, there is a need for a dual drive system that has good heat dissipation, high integration, high EMC performance, meets compatibility, and can effectively shorten the size.

Disclosure of Invention

The utility model aims to overcome the defects of poor heat radiation performance, low integration level, poor EMC, incompatibility, oversized size and the like in the prior art and provides a special double-driving system for a hybrid power gearbox.

The aim of the utility model can be achieved by the following technical scheme:

the technical proposal of the utility model provides a special double-driving system for a hybrid power gearbox, which comprises a shell component, a high-frequency inversion component, a boosting inductive component, an alternating current output component and a three-phase connector which are arranged on the shell component,

the high-frequency inverter assembly comprises a capacitor body and a power switch assembly arranged on the capacitor body, wherein the capacitor body is internally provided with a boosting capacitor body, an inverting capacitor body, a group of leakage capacitors connected in parallel with the boosting capacitor body and two groups of leakage capacitors connected in parallel with the inverting capacitor body, the capacitor body is also provided with a group of capacitor input terminals and a booster wiring terminal which are connected with the boosting capacitor body, a plurality of groups of inverting capacitor output terminals and a group of inverting capacitor input terminals which are connected with the inverting capacitor body, and the power switch assembly comprises a boosting power switch electrically connected with the inverting capacitor input terminals and a plurality of inverting power switches electrically connected with the inverting capacitor output terminals;

the capacitor input terminal, the boosting capacitor, the booster wiring terminal, the boosting inductive component, the boosting power switch and the inverting capacitor input terminal are electrically connected in sequence to form a boosting circuit; the inverter capacitor, the inverter capacitor output terminal, the inverter power switch, the alternating current output assembly and the three-phase connector are electrically connected in sequence to form an inverter circuit.

Further, the capacitive input terminal includes a capacitive positive input terminal and a capacitive negative input terminal, the inverter capacitive output terminal includes an inverter capacitive positive output terminal and an inverter capacitive negative output terminal, and the inverter capacitive input terminal includes an inverter capacitive positive input terminal and an inverter capacitive negative input terminal.

Further, the boosting inductive body assembly comprises a boosting inductive body, a low-voltage current carrying row and a high-voltage current carrying row which are respectively connected with two ports of the boosting inductive body, a single Hall detector fixed on the high-voltage current carrying row, and a high-voltage transfer row which is used for electrically connecting the single Hall detector with the boosting power switch, wherein the low-voltage current carrying row is also electrically connected with the booster wiring terminal.

Further, the alternating current output assembly comprises an alternating current bracket, a six-body Hall detector arranged on the alternating current bracket, a plurality of groups of alternating current input terminals and alternating current output terminals, wherein the alternating current input terminals are electrically connected with the inversion power switch, and the alternating current output terminals are electrically connected with the three-phase connector.

Further, the inverter power switch, the inverter capacitor output terminal, the ac input terminal and the ac output terminal are all provided with six groups, and the three-phase connector is provided with two groups.

Further, the dual driving system further comprises a current stabilizer, a DC/DC converter and a control unit, wherein the shell assembly comprises an upper shell assembly, a middle shell assembly with a hollow cavity structure and a lower shell assembly, the middle shell assembly comprises a middle shell, the current stabilizer, a high-frequency inversion assembly, a boosting inductive body assembly, the DC/DC converter and an alternating current output assembly are arranged in the upper cavity of the middle shell, the control unit is arranged in the lower cavity of the middle shell, and the alternating current output assembly also penetrates through the upper cavity and the lower cavity of the middle shell; the lower housing assembly includes a lower housing and a three-phase connector secured within the lower housing.

The control unit is a motor controller conventional in the art, such as a permanent magnet ac motor controller.

Further, a cooling water channel is paved in the middle shell, and cooling water in the cooling water channel circularly flows through the capacitive body, the inductive body and the thin film capacitor arrangement area, the inductance arrangement area and the DCDC arrangement area where the DC/DC converter is respectively located.

Further, a liquid cooling plate assembly for circularly inputting cooling water to the cooling water channel is further stacked below the power switch assembly, and the power switch assembly is fastened with the liquid cooling plate assembly through the plate spring assembly.

Further, a water inlet pipe is arranged on one side of the middle shell, a water outlet pipe is arranged on the other side of the middle shell, water enters the liquid cooling plate assembly from the water inlet pipe for refrigeration, then flows into the cooling water channel from the liquid cooling plate assembly, and finally flows out from the water outlet pipe.

Further, the current stabilizer comprises a mounting seat, wherein two high magnetic conductive device grooves for assembling high magnetic conductive devices and four leakage capacitor grooves for assembling leakage capacitors are formed in the peripheries of the high magnetic conductive device grooves, and each high magnetic conductive device groove is internally provided with two laminated high magnetic conductive devices.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the booster circuit is introduced, so that the working current of the high-frequency inverter assembly is reduced, the loss of the system is further reduced, the working efficiency is improved, and meanwhile, the cost increase caused by increasing the battery voltage is avoided.

(2) The utility model integrates the booster circuit, the inverter circuit and the DC/DC converter in the middle shell, thereby improving the integration level of the system.

(3) The system of the utility model effectively shortens the size through the lamination of each part, and can meet the outer wrapping requirement of potential clients in the market.

(4) The four high magnetic conduction devices, the four leakage capacitors and the two groups of leakage capacitors integrated in the capacitive body and connected in parallel with the inversion capacitive body in the system current stabilizer form a CLCLC filter configuration, and EMC performance is improved.

(5) The system is provided with the cooling water channel, so that the heat of the capacitive body, the inductive body and the DC/DC converter during working can be effectively reduced.

(6) According to the system, the booster power switch is replaced by a copper block with the same thickness, and then the booster wiring terminal on the capacitor body is electrically connected with the positive electrode wiring terminal by one current carrying row, so that the booster inductor component can be removed.

Drawings

FIG. 1 is an exploded view of a dual drive system.

FIG. 2 is a schematic diagram of a current stabilizer assembly.

Fig. 3 is a schematic view of a mounting base structure.

Fig. 4 is an assembly schematic of a high frequency inverter assembly.

Fig. 5 is a schematic diagram of a capacitor structure.

Fig. 6 is a schematic view of the upper housing assembly.

Fig. 7 is a schematic diagram of a boost inductor assembly.

Fig. 8 is a schematic diagram of the assembly of the middle housing assembly.

Fig. 9 is a schematic view of the upper cavity of the middle shell.

Fig. 10 is a schematic view of the lower cavity structure of the middle housing.

Fig. 11 is a schematic view of a cooling water channel laying area.

Fig. 12 is a schematic view of the lower housing assembly.

Fig. 13 is a schematic diagram of an ac output assembly.

The figures are identified as follows:

fig. 1: the high-frequency power generation device comprises a current stabilizer 1, a high-frequency inversion assembly 2, an upper shell assembly 3, a boosting inductive body assembly 4, a DC/DC converter 5, a middle shell assembly 6, a control unit 7, a lower shell assembly 8 and an alternating current output assembly 9.

Fig. 2:1-1 is a mounting seat, 1-2 is a negative electrode current carrying row, 1-3 is a positive electrode current carrying row, 1-4 is a leakage capacitor, 1-5 is a fuse current carrying row, 1-6 is a high magnetic conduction device, 1-7 is a silica gel pad, 1-8 is a mounting cover, 1-9 is a fuse, and 1-10 is a grounding row.

Fig. 3:1-1-1 is a high magnetic conductive device groove, and 1-1-2 is a leakage capacitor groove.

Fig. 4:2-1 is a liquid cooling plate component, 2-2 is a power switch component, 2-3 is a plate spring component, 2-4 is a capacitor, 2-2-1 is a boost power switch, and 2-2-2 is an inversion power switch.

Fig. 5:2-4-1 is a capacitive positive electrode input terminal, 2-4-2 is a capacitive negative electrode input terminal, 2-4-3 is a capacitive positive electrode output terminal, 2-4-4 is an insulating sheet, 2-4-5 is a capacitive negative electrode output terminal, 2-4-6 is a positive electrode connecting terminal, 2-4-7 is a booster connecting terminal, 2-4-8 is an inverting capacitive positive electrode input terminal, and 2-4-9 is an inverting capacitive negative electrode input terminal.

Fig. 6:3-1 is a protective cover, and 3-2 is an upper shell.

Fig. 7:4-1 is a boosting inductor, 4-2 is a low-voltage current-carrying row, 4-3 is a high-voltage current-carrying row, 4-4 is a single Hall detector, and 4-5 is a high-voltage switching row.

Fig. 8:6-1 is a middle shell, 6-2 is a two-phase wire holder, 6-3 is a water inlet pipe, 6-4 is a wire distributing socket, 6-5 is a communication connector, 6-6 is a respirator, 6-7 is a water outlet pipe, 6-8 is a direct current output socket, and 6-9 is a plug.

Fig. 9:6-1-1 is a current stabilizer fixed column, 6-1-2 is a power switch component compacting structure, 6-1-3 is a boosting inductive body fixed column, 6-1-4 is a communication joint interface, 6-1-5 is a DC/DC converter heat conducting surface, and 6-1-6 is an alternating current component through hole.

Fig. 10:6-1-7 are welding plates.

Fig. 11: a is a thin film capacitor arrangement area, B is an inductance arrangement area, and C is a DCDC arrangement area.

Fig. 12:8-1 is a lower shell and 8-2 is a three-phase connector.

Fig. 13:9-1 is an alternating current bracket, 9-2 is a six-body Hall detector, 9-3 is an alternating current input terminal, and 9-4 is an alternating current first output terminal.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples.

In the following embodiments, unless otherwise specified, the functional components or structures are all conventional components or conventional structures used in the art to achieve the corresponding functions, and unless otherwise specified, the connection relationships between the functional components or structures are known to those skilled in the art, and are not the utility model.

Example 1

As shown in fig. 1, the system is a special dual-drive system for a hybrid gearbox, and comprises a current stabilizer 1, a high-frequency inverter assembly 2, a boosting inductive body assembly 4, a DC/DC converter 5, a control unit 7 and an alternating current output assembly 9, wherein the system is sequentially provided with an upper shell assembly 3, a middle shell assembly 6 with a hollow cavity structure and a lower shell assembly 8 from top to bottom.

As shown in FIG. 2, the current stabilizer 1 comprises a mounting seat 1-1, a negative electrode current carrying row 1-2, a positive electrode current carrying row 1-3, a leakage capacitor 1-4, a fuse current carrying row 1-5, a high magnetic conduction device 1-6, a silica gel pad 1-7, a mounting cover 1-8, a fuse 1-9 and a grounding row 1-10. The high magnetic conduction devices 1-6 are provided with four, a two-stage filter structure is formed, each stage filter structure comprises two high magnetic conduction devices 1-6, and the two high magnetic conduction devices 1-6 are stacked together and then placed in the high magnetic conduction device groove. Four leakage capacitors 1-4 are arranged, two pin corners are respectively led out from the negative electrode current carrying row 1-2 and the positive electrode current carrying row 1-3, and each pin corner is welded on one lead of the four leakage capacitors 1-4. The number of the grounding rows 1-10 is two, each grounding row 1-10 leads out two pin corners, and each pin corner is welded on the other lead of the four leakage capacitors 1-4. The two fuses 1-9 are fixed on the top of the mounting covers 1-8. One end of the fuse current carrying row 1-5 is connected with the positive electrode current carrying row 1-3, and the other end is connected with the two fuses 1-9.

As shown in fig. 3, the mounting seat 1-1 is provided with two high magnetic conductive device grooves 1-1-1 for assembling the high magnetic conductive devices 1-6 and four leakage capacitor grooves 1-1-2 for assembling the leakage capacitors 1-4, which are arranged around the high magnetic conductive device grooves 1-1, so that the leakage capacitors 1-4 and the high magnetic conductive devices 1-6 are staggered.

As shown in fig. 4, the high-frequency inverter assembly 2 includes a capacitive body 2-4, a power switch assembly 2-2 provided on the capacitive body 2-4, and a liquid cooling plate assembly 2-1 stacked under the power switch assembly 2-2, wherein the power switch assembly 2-2 and the liquid cooling plate assembly 2-1 are fastened by a plate spring assembly 2-3. The capacitor bodies 2-4 are also loaded with a boost capacitor body, an inverter capacitor body, a set of leakage capacitors connected in parallel with the boost capacitor body, and two sets of leakage capacitors connected in parallel with the inverter capacitor body. Therefore, the four high magnetic conduction devices 1-6, the four leakage capacitors 1-4 and two groups of leakage capacitors integrated inside the capacitor body 2-4 and connected in parallel with the inverter capacitor body in parallel form a filter configuration of the CLCLC. The power switch assembly 2-2 includes one boost power switch 2-2-1 and six inverter power switches 2-2-2.

As shown in fig. 5, a set of capacitor input terminals and a booster connection terminal 2-4-7 for connecting the booster capacitor, a plurality of sets of inverter capacitor output terminals and a set of inverter capacitor input terminals for connecting the inverter capacitor, and a positive connection terminal 2-4-6 are provided on the capacitor 2-4, the capacitor input terminals include a capacitor positive input terminal 2-4-1 and a capacitor negative input terminal 2-4-2, the inverter capacitor output terminals include an inverter capacitor positive output terminal 2-4-3 and an inverter capacitor negative output terminal 2-4-5, and the inverter capacitor input terminals include an inverter capacitor positive input terminal 2-4-8 and an inverter capacitor negative input terminal 2-4-9. The positive output terminal 2-4-3 and the negative output terminal 2-4-5 of the inverter capacitor are electrically connected with the positive and negative input terminals of the inverter power switch 2-2-2, respectively, and the positive input terminal 2-4-8 and the negative input terminal 2-4-9 of the inverter capacitor are electrically connected with the positive and negative input terminals of the boost power switch 2-2-1, respectively. An insulating sheet 2-4-4 is arranged between the positive output terminal 2-4-3 of the inverter capacitor and the negative output terminal 2-4-5 of the inverter capacitor, and an insulating sheet 2-4-4 is also arranged between the positive input terminal 2-4-8 of the inverter capacitor and the negative input terminal 2-4-9 of the inverter capacitor.

As shown in fig. 6, the upper housing assembly 3 includes a protective cover 3-1 and an upper housing 3-2, the protective cover 3-1 being fixed above the upper housing 3-2.

As shown in fig. 7, the boosting inductive body assembly 4 includes a boosting inductive body 4-1, a low-voltage current carrying row 4-2 and a high-voltage current carrying row 4-3 electrically connected to both ends of the boosting inductive body 4-1, respectively, a single hall detector 4-4 fixed to the high-voltage current carrying row 4-3, and a high-voltage switching row 4-5 for electrically connecting the single hall detector 4-4 and the boosting power switch 2-2-1, the low-voltage current carrying row 4-2 being also electrically connected to the high-voltage current carrying row 4-3.

As shown in FIG. 8, the middle housing assembly 6 comprises a middle housing 6-1, two-phase wire holders 6-2 fixed on one side surface of the middle housing 6-1, a water inlet pipe 6-3, a wire distributing socket 6-4, a communication joint 6-5 fixed on the other side surface of the middle housing 6-2, a respirator 6-6, a water outlet pipe 6-7, a direct current output socket 6-8 and six plugs 6-9 fixed on the front side of the middle housing 6-1. The upper cavity of the middle shell 6-1 is internally provided with a current stabilizer 1, a high-frequency inversion component 2, a boosting inductive component 4, a DC/DC converter 5 and an alternating current output component 9, the lower cavity of the middle shell 6-1 is internally provided with a control unit 7, and the alternating current output component 9 also penetrates through the upper cavity and the lower cavity.

As shown in fig. 9, the upper cavity of the middle housing 6-1 further includes a current stabilizer fixing column 6-1-1, a power switch assembly compressing structure 6-1-2, a boosting inductor fixing column 6-1-3, a DC/DC converter heat conducting surface 6-1-5, an ac assembly through hole 6-1-6, which are respectively and fixedly connected with the current stabilizer 1, the power switch assembly 2-2, the boosting inductor assembly 4, the DC/DC converter 5 and the ac output assembly 9; one side of the middle shell 6-1 is provided with a mechanical interface 6-1-4 matched with the communication connector 6-5.

As shown in FIG. 10, the lower cavity of the middle shell 6-1 is also provided with a welding plate 6-1-7, and the welding plate 6-1-7 is connected with the main body part of the middle shell 6-1 in a friction stir welding manner.

As shown in fig. 11, a circulating cooling water channel is also laid in the thin film capacitor arrangement area a (equipped with the capacitor body 2-4), the inductor arrangement area B (equipped with the inductor body 4-1), and the DCDC arrangement area C (equipped with the DC/DC converter 5) within the middle case 6-1. The water enters the liquid cooling plate assembly 2-1 from the water inlet pipe 6-3 for refrigeration, then flows into the cooling water channel, and finally flows out from the water outlet pipe 6-7.

As shown in fig. 12, the lower housing assembly 8 includes a lower housing 8-1 and two sets of three-phase connectors 8-2 fixed inside the lower housing 8-1.

As shown in fig. 13, the ac output assembly 9 includes an ac bracket 9-1, a six-body hall detector 9-2 provided on the ac bracket 9-1, and six sets of ac input terminals 9-3 and ac output terminals 9-4, the ac input terminals 9-3 being respectively electrically connected to the inverter power switches 2-2 in correspondence, and the ac output terminals 9-4 being respectively electrically connected to the two sets of three-phase connectors 8-2 on the lower housing assembly 8 in correspondence.

The specific implementation procedure of the dual drive system dedicated for the hybrid transmission of the present embodiment is as follows, and if there is no connection relationship between the functional components or structures specifically described, the connection relationship is known to those skilled in the art, and is not taken as the point of the present utility model:

(1) The water outlet pipe 6-7 is pressed on the left side surface of the middle shell 6-1, and the water inlet pipe 6-3 is fixed on the right side surface of the middle shell 6-1 by screws.

(2) After the liquid cooling plate assembly 2-1 and the power switch assembly 2-2 are assembled in a laminated way, the liquid cooling plate assembly is fixed on the power switch assembly pressing structure 6-1-2 in the upper cavity of the middle shell 6-1, and then the liquid cooling plate assembly is pressed by the plate spring assembly 2-3.

(3) The double-driving system of the embodiment is subjected to water channel air tightness test, and the next operation is performed after the pass of the water channel air tightness test is confirmed.

(4) The bottom of the capacitive body 2-4 is coated with heat-conducting silicone grease, and the capacitive body 2-4 is fixed in the upper cavity of the middle shell 6-1.

(5) Assembling a current stabilizer 1: the four leakage capacitors 1-4 are sequentially encapsulated in four leakage capacitor grooves 1-1-2 on the mounting seat; fixing the mounting seat 1-1 on a current stabilizer fixing column 6-1-1 in the middle shell 6-1; sequentially installing the two high magnetic conduction devices 1-6 into the two high magnetic conduction device grooves 1-1-2 on the installation seat 1-1, wherein the openings are upward; winding insulating tapes on the non-wiring terminal positions on the surface of the negative electrode current carrying row 1-2, and then assembling the negative electrode current carrying row 1-2 and the positive electrode current carrying row 1-3 on the mounting seat 1-1; stacking the other two high magnetic conduction devices 1-6 above the first two high magnetic conduction devices 1-6, and filling a silica gel pad 1-7 above the high magnetic conduction devices 1-6; fixing the mounting cover 1-8 above the mounting seat 1-1, and simultaneously compacting the high magnetic conduction device 1-6; two fuses 1-9 and one fuse current carrying row 1-5 are sequentially fixed above the mounting cover 1-8.

(6) The bottom surface of the DC/DC converter 5 is coated with heat-conducting silicone grease, and then the heat-conducting silicone grease is fixed on the heat-conducting surface 6-1-5 of the DC/DC converter inside the middle shell 6-1.

(7) Assembling an alternating current output assembly 9: sequentially preassembling six alternating current input terminals 9-3 on an alternating current bracket 9-1; the six alternating current input terminals 9-3 sequentially pass through the six-body Hall detector 9-2, then the six-body Hall detector 9-2 is fixed on the alternating current bracket 9-1, and the six alternating current output terminals 9-4 are sequentially fixed with the six alternating current input terminals 9-3 through nuts to realize electrical connection; the assembled alternating current output assembly 9 is fixed inside the middle shell 6-1 and is connected with the alternating current assembly through holes 6-1-6; the high-voltage switching row 4-5 of the boosting inductor assembly 4 is fixed on the alternating current bracket 9-1 of the alternating current output assembly 9; the six ac output terminals 9-4 are welded to the output terminals of the inverter power switch 2-2-2. The high-voltage transfer row 4-5 is welded with the input terminal of the boost power switch 2-2-1, the positive electrode input terminal 2-4-8 of the inverter capacitor of the capacitor 2-4 and the negative electrode input terminal 2-4-9 of the inverter capacitor are sequentially welded with the positive electrode terminal and the negative electrode terminal of the boost power switch 2-2-1 correspondingly, and simultaneously the positive electrode output terminal 2-4-3 of the inverter capacitor of the capacitor 2-4 and the negative electrode output terminal 2-4-5 of the inverter capacitor are sequentially welded with the positive electrode terminal and the negative electrode terminal of the inverter power switch 2-2 correspondingly.

(8) Assembling the boost inductor assembly 4: fixing the pressure boosting sensing body 4-1 on the pressure boosting sensing body fixing column 6-1-3 inside the middle shell 6-1; the single Hall detector 4-4 is pre-arranged on the high-voltage current carrying row 4-3; the booster connecting terminal 2-4-7 of the capacitive body 2-4 and the input terminal of the boosting inductive body 4-1 are connected by the low-voltage ballast line 4-2; the output terminal of the boosting inductor 4-1 and the high-voltage switching bank 4-5 are connected by a high-voltage current bank 4-3.

(9) The two-phase wiring seat 6-2, the branching socket 6-4, the communication connector 6-5 and the direct current output socket 6-8 in the middle shell assembly 6 are sequentially fixed on the side face of the middle shell 6-1.

(10) The control unit 7 is fixed to the bottom of the middle housing 6-1.

(11) Two three-phase connectors 8-2 are sequentially fixed to the lower housing 8-1, and then the lower housing 8-1 is fixed to the bottom of the middle housing assembly 6.

(12) The dual driving system of this embodiment is subjected to an insulation withstand voltage test, and after the pass of the test is confirmed, the next operation is performed.

(13) The upper housing 3-2 is fixed above the middle housing assembly 6, and the protective cover 3-1 is fixed above the upper housing 3-2.

(14) Six plugs 6-9 are fixed on the side surface of the middle shell 6-1 in sequence.

(15) The double-drive system of the embodiment is subjected to complete machine airtight test, and the next operation is performed after the qualified test is confirmed.

(16) The respirator 6-6 is mounted to the side of the middle shell 6-1.

The capacitive input terminal, the boosting capacitive, the booster connecting terminal 2-4-7, the boosting inductive component 4, the boosting power switch 2-2-1 and the inverting capacitive input terminal are electrically connected in sequence to form a boosting circuit; the inverter capacitor, the inverter capacitor output terminal, the inverter power switch 2-2-2, the ac output module 9, and the three-phase connector 8-2 are electrically connected in this order to form an inverter circuit.

Example 2:

the main difference is that the number of the power switch modules 2-2 is 4, 10 or more satisfying 3n+1, n being a positive integer, which is the same as that of embodiment 1 in most cases.

Example 3:

the embodiment is a special dual-drive system for a hybrid transmission without a booster circuit. The same as embodiment 1 is mostly except that the boost power switch 2-2-1 is replaced by a copper block with the same thickness, and then the booster connecting terminal 2-4-7 on the capacitor body is electrically connected with the positive electrode connecting terminal 2-4-6 by one current carrying row, so that the boost inductor assembly 4 can be removed, and different requirement states of different vehicle types can be met.

Example 4:

the main difference is that the number of the power switch modules 2-2 is 3, 6 or more satisfying 3n, n being a positive integer, which is the same as that of embodiment 3 in most cases.

Example 5:

the main difference is that two or more power switch assemblies 2-2 are used in parallel to increase their output capacity, as in embodiment 1 for the most part.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims (10)

1. The special double-driving system for the hybrid power gearbox is characterized by comprising a shell component, a high-frequency inversion component (2), a boosting inductor component (4), an alternating current output component (9) and a three-phase connector (8-2) which are arranged on the shell component,

the high-frequency inverter assembly (2) comprises a capacitor (2-4) and a power switch assembly (2-2) arranged on the capacitor (2-4), wherein the capacitor (2-4) is internally provided with a boosting capacitor, an inverting capacitor, a group of leakage capacitors connected with the boosting capacitor in parallel and two groups of leakage capacitors connected with the inverting capacitor in parallel, the capacitor (2-4) is also provided with a group of capacitor input terminals and a booster connecting terminal (2-4-7) which are connected with the boosting capacitor, and a plurality of groups of inverting capacitor output terminals and a group of inverting capacitor input terminals which are connected with the inverting capacitor, and the power switch assembly (2-2) comprises a boosting power switch (2-2-1) electrically connected with the inverting capacitor input terminals and a plurality of inverting power switches (2-2-2) electrically connected with the inverting capacitor output terminals;

the capacitor input terminal, the boosting capacitor, the booster wiring terminal (2-4-7), the boosting inductor component (4), the boosting power switch (2-2-1) and the inverting capacitor input terminal are electrically connected in sequence to form a booster circuit; the inverter capacitor, the inverter capacitor output terminal, the inverter power switch (2-2-2), the alternating current output assembly (9) and the three-phase connector (8-2) are electrically connected in sequence to form an inverter circuit.

2. The hybrid transmission dedicated dual drive system as recited in claim 1, wherein the capacitive input terminals include a capacitive positive input terminal (2-4-1) and a capacitive negative input terminal (2-4-2), the inverter capacitive output terminals include an inverter capacitive positive output terminal (2-4-3) and an inverter capacitive negative output terminal (2-4-5), and the inverter capacitive input terminals include an inverter capacitive positive input terminal (2-4-8) and an inverter capacitive negative input terminal (2-4-9).

3. The dual drive system for a hybrid transmission according to claim 1, wherein the boost inductor assembly (4) includes a boost inductor (4-1), a low-voltage ballast line (4-2) and a high-voltage ballast line (4-3) respectively connected to two ports of the boost inductor (4-1), a single hall detector (4-4) fixed to the high-voltage ballast line (4-3), and a high-voltage transfer line (4-5) for electrically connecting the single hall detector (4-4) and the boost power switch (2-2-1), the low-voltage ballast line (4-2) being further electrically connected to the booster terminal (2-4-7).

4. A hybrid gearbox dedicated dual drive system according to claim 1, wherein the ac output assembly (9) comprises an ac bracket (9-1), a six-piece hall detector (9-2) provided on the ac bracket (9-1), and a plurality of sets of ac input terminals (9-3) and ac output terminals (9-4), the ac input terminals (9-3) being electrically connected to the inverter power switch (2-2-2), the ac output terminals (9-4) being electrically connected to the three-phase connector (8-2).

5. The dual drive system for a hybrid transmission according to claim 4, wherein six groups of the inverter power switch (2-2-2), the inverter capacitor output terminal, the ac input terminal (9-3) and the ac output terminal (9-4) are provided, and two groups of the three-phase connector (8-2) are provided.

6. The dual drive system for a hybrid transmission according to claim 1, further comprising a current stabilizer (1), a DC/DC converter (5) and a control unit (7); the shell assembly comprises an upper shell assembly (3), a middle shell assembly (6) with a hollow cavity structure and a lower shell assembly (8), wherein the middle shell assembly (6) comprises a middle shell (6-1), the upper cavity of the middle shell (6-1) is internally provided with the current stabilizer (1), the high-frequency inversion assembly (2), the boosting inductive body assembly (4), the DC/DC converter (5) and the alternating current output assembly (9), the lower cavity of the middle shell (6-1) is internally provided with the control unit (7), and the alternating current output assembly (9) also penetrates through the upper cavity and the lower cavity of the middle shell (6-1); the lower housing assembly (8) includes a lower housing (8-1) and a three-phase connector (8-2) fixed inside the lower housing (8-1).

7. The dual drive system for a hybrid transmission according to claim 6, wherein a cooling water channel is laid in the middle housing (6-1), and cooling water in the cooling water channel circulates through the capacitive body (2-4), the inductive body (4-1), and the thin film capacitor arrangement region (a), the inductor arrangement region (B), and the DCDC arrangement region (C) where the DC/DC converter (5) is located, respectively.

8. The special dual-drive system for the hybrid gearbox according to claim 7, wherein a liquid cooling plate assembly (2-1) for circularly inputting cooling water to the cooling water channel is further stacked under the power switch assembly (2-2), and the power switch assembly (2-2) and the liquid cooling plate assembly (2-1) are fastened through a plate spring assembly (2-3).

9. The special dual-drive system for the hybrid gearbox according to claim 8, wherein a water inlet pipe (6-3) is arranged on one side of the middle shell (6-1), a water outlet pipe (6-7) is arranged on the other side of the middle shell (6-1), water enters the liquid cooling plate assembly (2-1) from the water inlet pipe (6-3) for refrigeration, then flows into the cooling water channel from the liquid cooling plate assembly (2-1), and finally flows out from the water outlet pipe (6-7).

10. The special dual-drive system for the hybrid gearbox according to claim 6, wherein the current stabilizer (1) comprises a mounting seat (1-1), two high-permeability device grooves (1-1-1) for assembling high-permeability devices (1-6) and four leakage capacitor grooves (1-1-2) which are formed around the high-permeability device grooves (1-1-1) and are used for assembling leakage capacitors (1-4) are formed in the mounting seat (1-1), and two laminated high-permeability devices (1-6) are assembled in each high-permeability device groove (1-1-1).

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