CN116722633B

CN116722633B - Automobile electric drive and charging integrated system, vehicle and electronic equipment

Info

Publication number: CN116722633B
Application number: CN202311002810.6A
Authority: CN
Inventors: 蒋伟; 邱晨; 喻皓
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-06-11
Anticipated expiration: 2043-08-10
Also published as: CN116722633A

Abstract

The embodiment of the application provides an automobile electric drive and charge integrated system, a vehicle and electronic equipment, wherein the system comprises: the power battery unit, the motor inversion unit, the motor system, the charging unit, the flow unit and the change-over switch; the motor inversion unit and the rectification unit are connected in parallel with the power battery unit; the motor inversion unit is connected with the motor system and is used for controlling the working state of the motor system, and the charging unit comprises: a push-pull circuit module having a transformer; the push-pull circuit module is connected with a neutral point of the motor system through the change-over switch; the push-pull circuit module is also connected with the rectifying unit. The system multiplexes the motor structure, carries out the integrated design of electric drive charging, realizes isolated charging, and compared with the prior art, the quantity of power devices can be greatly reduced.

Description

Automobile electric drive and charging integrated system, vehicle and electronic equipment

Technical Field

The application relates to the technical field of new energy automobiles, in particular to an automobile electric drive and charge integrated system, a vehicle and electronic equipment.

Background

In recent years, new energy automobiles in China enter the era of rapid development, the permeability of the new energy automobiles reaches 30%, and the comprehensive electrification era is being started. Meanwhile, along with the implementation of the policy of the energy source of 'double carbon' target, the energy consumption target of the electric automobile becomes more severe, the improvement of the whole automobile energy efficiency technology gradually becomes a research hot spot, the weight, cost and performance requirements on the whole automobile, the system and parts are more severe, and particularly in the technical field of motor driving and charging, the system is developed towards the trend of high pressure and integration. However, the structure of the existing automobile electric drive and charge integrated system is inflammable and complicated.

Disclosure of Invention

The embodiment of the application aims to provide an automobile electric drive and charge integrated system, a vehicle and electronic equipment, which are used for multiplexing a motor structure and carrying out electric drive and charge integrated design so as to realize isolated charging.

In a first aspect, an embodiment of the present application provides an integrated system for driving and charging an automobile, including:

The power battery unit, the motor inversion unit, the motor system, the charging unit, the rectifying unit and the change-over switch;

The motor inversion unit and the rectification unit are connected in parallel with the power battery unit;

the motor inversion unit is connected with the motor system and used for controlling the working state of the motor system;

the charging unit includes: a push-pull circuit module having a transformer;

the push-pull circuit module is connected with a neutral point of the motor system through the change-over switch;

the push-pull circuit module is also connected with the rectifying unit.

In the implementation process, the property of the three-phase winding inductance of the motor is utilized, the function multiplexing of charging and motor inversion is realized, a complex circuit in the prior art is omitted, the complex circuit is adjusted to be a push-pull circuit module with a simpler function structure, the number of power devices in an electric drive and charging system in the prior art is reduced, and the automobile electric drive and charging integrated system can also realize isolated charging based on a transformer in the push-pull circuit module.

With reference to the first implementation manner of the first aspect, the push-pull circuit module includes: the device comprises a transformer, a charging inductor, a charging capacitor, a first rectifying power tube, a second rectifying power tube, a first half-bridge circuit and a capacitor circuit;

The first end of the primary side of the transformer is connected with the change-over switch through the charging inductor and the first rectifying power tube;

The second end of the primary side of the transformer is connected with the charging inductor and the connection point between the first rectifying power tube through the second rectifying power tube;

The second bus end of the motor inversion unit is connected with the middle part of the primary side of the transformer;

the first end of the first rectifying power tube is connected with the primary side;

The first end of the charging inductor is connected with the second end of the first rectifying power tube, and the second end of the charging inductor is connected with the neutral point of the motor system through the change-over switch;

The second end of the charging inductor is connected with the second bus end of the motor inversion unit through the charging capacitor;

The first end of the secondary side of the transformer is connected with the midpoint of the capacitor circuit;

The second end of the secondary side of the transformer is connected with the midpoint of the first half-bridge circuit.

With reference to the second implementation manner of the first aspect, the push-pull circuit module includes: the full-bridge circuit comprises a transformer, a charging inductor, a charging capacitor, a first rectifying power tube, a second rectifying power tube and a full-bridge circuit, wherein the full-bridge circuit comprises: a first half-bridge circuit and a second half-bridge circuit;

the first end of the secondary side of the transformer is connected with the midpoint of the second half-bridge circuit;

With reference to the third implementation manner of the first aspect, the motor inverter unit includes: a third half-bridge circuit, a fourth half-bridge circuit, and a fifth half-bridge circuit;

the third half-bridge circuit is formed by sequentially connecting a fifth power switching tube and a sixth power switching tube;

The fourth half-bridge circuit is formed by sequentially connecting a seventh power switching tube and an eighth power switching tube;

the fifth half-bridge circuit is formed by sequentially connecting a ninth power switching tube and a tenth power switching tube;

The second half-bridge circuit is formed by sequentially connecting a third power switch tube and a fourth power switch tube.

In a second aspect, an embodiment of the present application provides a control method for an integrated system for driving and charging an automobile, including:

The switching switch is controlled to be switched off in response to a first working condition, and the motor inversion unit is controlled to work so as to drive the motor system to work;

and responding to a second working condition, controlling the switching switch to be closed, and controlling the motor inverter unit to work so as to execute charging operation.

With reference to the first embodiment of the second aspect, the first power switch tube is controlled to be opened, the second power switch tube is controlled to be closed, the first rectifying power tube is opened, the second rectifying power tube is closed, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the power switch tube of the first sub-circuit of the fifth half-bridge circuit are opened, and the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the power switch tube of the second sub-circuit of the fifth half-bridge circuit are closed in a first sub-switch period of the switch period;

The first power switch tube is controlled to be closed in a second sub-switch period of the switch period, the second power switch tube is closed, the first rectifying power tube is closed, the second rectifying power tube is closed, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the power switch tube of the first sub-circuit of the fifth half-bridge circuit are closed, and the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the power switch tube of the second sub-circuit of the fifth half-bridge circuit are opened;

The first power switch tube is controlled to be closed in a third sub-switch period of the switch period, the second power switch tube is opened, the first rectifying power tube is closed, the second rectifying power tube is opened, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the power switch tube of the first sub-circuit of the fifth half-bridge circuit are opened, and the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the power switch tube of the second sub-circuit of the fifth half-bridge circuit are closed;

And controlling the first power switch tube to be closed in a fourth sub-switch period of the switch period, controlling the second power switch tube to be closed, controlling the first rectifying power tube to be closed and controlling the second rectifying power tube to be closed, controlling the power switch tubes of the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the first sub-circuit of the fifth half-bridge circuit to be closed, and controlling the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the power switch tube of the second sub-circuit of the fifth half-bridge circuit to be opened.

With reference to the second embodiment of the second aspect, the power switch tube of the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, and the first sub-circuit of the fifth half-bridge circuit is opened, and the power switch tube of the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit, and the second sub-circuit of the fifth half-bridge circuit is closed, including:

the power switching tubes of any one of the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the first sub-circuit of the fifth half-bridge circuit are opened, and all the power switching tubes in the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the second sub-circuit of the fifth half-bridge circuit are closed at the same time;

Or, the power switching tubes in the first sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are conducted in an staggered manner, and all the power switching tubes in the second sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are closed at the same time;

Or, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the power switch tubes in the first sub-circuit of the fifth half-bridge circuit are conducted simultaneously, and all the power switch tubes in the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the second sub-circuit of the fifth half-bridge circuit are closed simultaneously.

With reference to the third implementation manner of the second aspect, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, and the power switch tube of the first sub-circuit of the fifth half-bridge circuit are closed, and the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit, and the power switch tube of the second sub-circuit of the fifth half-bridge circuit are opened, including:

all power switching tubes in the first sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are closed, and the power switching tube of any one of the second sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit is conducted;

Or all power switching tubes in the first sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are closed, and the power switching tubes in the second sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are conducted in a staggered manner;

Or, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and all power switch tubes in the first sub-circuit of the fifth half-bridge circuit are closed, and all power switch tubes in the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the second sub-circuit of the fifth half-bridge circuit are simultaneously conducted.

In a third aspect, an embodiment of the present application provides a vehicle including: the electric driving and charging integrated system of the automobile according to the first aspect.

In a fourth aspect, an electronic device provided by an embodiment of the present application includes: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any one of the first aspects when the computer program is executed.

Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an integrated system for electric driving and charging according to an embodiment of the present application;

Fig. 2 is a schematic diagram of a first structure of an integrated system for driving and charging according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a second structure of an integrated system for driving and charging according to an embodiment of the present application;

Fig. 4 is a schematic diagram of a third structure of an integrated system for driving and charging according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a fourth configuration of an integrated system for driving and charging according to an embodiment of the present application;

FIG. 6 is a flow chart of a control method of an integrated system structure for electric driving and charging according to an embodiment of the present application;

fig. 7 is a schematic diagram of a first operating state of a power switch tube of an integrated system structure for electric driving and charging according to an embodiment of the present application;

Fig. 8 is a schematic diagram of a second working state of a power switch tube of an integrated system structure for electric driving and charging according to an embodiment of the present application;

Fig. 9 is a schematic diagram of a third operating state of a power switch tube of an integrated system structure for electric driving and charging according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Reference numerals: 100-power battery unit; 200-a motor inversion unit; 300-motor system; 400-a charging unit; 500-rectifying unit; 600-charging interface; 700-an integrated control unit; l1-equivalent inductance; k1-a change-over switch; 30 a-a first winding; 30 b-a second winding; 30 c-a third winding; 401-a first power switching tube; 402-a second power switching tube; 403-a third power switching tube; 404-fourth power switching tube; 405-charging inductance; 406-charging a capacitor; 407-a first rectifying power tube; 408-a second rectifying power tube; 409-a transformer; 410-a first capacitance; 411-second capacitance; 201-a fifth power switching tube; 202-a sixth power switching tube; 203-seventh power switching tube; 204-eighth power switching tube; 205-ninth power switching tube; 206-tenth power switching tube; 505-eleventh power switching tube; 506-twelfth power switching transistor; 507-thirteenth power switching tube; 508-fourteenth power switching transistor; 509-fifteenth power switching transistors; 510-sixteenth power switching transistor; 511-a third diode; 512-fourth diode; 513-a fifth diode; 514-sixth diode.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, an embodiment of the present application provides an integrated system for driving and charging an automobile, including:

a power battery unit 100, a motor inverter unit 200, a motor system 300, a charging unit 400, a rectifying unit 500 and a change-over switch K1;

The motor inverter unit 200, the charging unit 400, and the rectifying unit 500 are connected in parallel to the power battery unit 100;

The motor inverter unit 200 is connected with the motor system 300 and is used for controlling the working state of the motor system 300;

the charging unit 400 includes: a push-pull circuit module having a transformer 409;

the push-pull circuit module is connected with the neutral point of the motor system 300 through a change-over switch K1;

The push-pull circuit module is also connected to the rectifying unit 500.

It will be appreciated that the integrated system further comprises: the integrated control unit 700 is used for controlling the switching states of the finishing power tube and the rectifying switch tube; the charging interface 600 is connected to the rectifying unit 500, and is used for charging, L1 is an equivalent inductance of the charging interface 600, and Vdc is a voltage across the rectifying unit 500.

In the above embodiment, the power battery unit 100 is a high-voltage energy storage unit formed by serially connecting lithium ion batteries, and the motor system 300 is typically a permanent magnet synchronous motor for an electric vehicle, and may also be an asynchronous motor for a vehicle. The motor is three-phase Y type winding, includes respectively: a first winding 30a, a second winding 30b and a third winding 30c.

In the above embodiment, the push-pull circuit module includes a push-pull circuit, which is an output circuit connected between two transistors of different polarities. The push-pull circuit adopts two power BJT (bipolar junction transistor) or MOSFET (metal-oxide-semiconductor field effect transistor) tubes with the same parameters, the two power BJT tubes or the MOSFET tubes exist in the circuit in a push-pull mode and are respectively responsible for waveform amplification tasks of positive and negative half cycles, and when the circuit works, only one symmetrical power switch tube is conducted at a time, so that the conduction loss is small and the efficiency is high. The push-pull output may sink current to the load as well as draw current from the load.

In the implementation process, the property of the three-phase winding inductance of the motor is utilized to realize the function multiplexing of charging and motor inversion, a complex circuit in the prior art is omitted, the complex circuit is adjusted to be a push-pull circuit module with a simpler functional structure, the number of power devices in an electric drive and charging system in the prior art is reduced, and the automobile electric drive and charging integrated system can also realize isolated charging based on a transformer 409 in the push-pull circuit module.

Referring to fig. 2, in some embodiments, the push-pull circuit module includes: a transformer 409, a charging inductor 405, a charging capacitor 406, a first rectifying power tube 407, and a second rectifying power tube 408; a first half-bridge circuit, a capacitive circuit;

the first end of the primary side of the transformer 409 is connected with the change-over switch K1 through the charging inductor 405 and the first rectifying power tube 407;

the second end of the primary side of the transformer 409 is connected with the charging inductor 405 and the connection point between the first rectifying power tube 407 through the second rectifying power tube 408;

The second bus end of the motor inverter unit 200 is connected with the middle part of the primary side of the transformer 409;

A first end of the first rectifying power tube 407 is connected with the primary side;

a first end of the charging inductor 405 is connected with a second end of the first rectifying power tube, and the second end of the charging inductor 405 is connected with a neutral point of the motor system 300 through a change-over switch K1;

A second end of the charging inductor 405 is connected with a second bus end of the motor inverter unit 200 through a charging capacitor 406;

The first end of the secondary side of the transformer 409 is connected to the midpoint of the capacitive circuit;

The second end of the secondary side of the transformer 409 is connected to the midpoint of the first half-bridge circuit.

The first half-bridge circuit is connected in parallel to the power cell unit 100.

Referring to fig. 2, in some embodiments, the first and second rectifying power tubes 407, 408 are diodes, and anodes of the first and second rectifying power tubes 407, 408 are connected to a transformer.

In some embodiments, the first rectifier power tube 407 and the second rectifier power tube 408 are NMOS tubes.

The capacitive circuit includes: the first capacitor 410 and the second capacitor 411 are connected in series to form a branch, and the branch is connected in parallel to the power battery unit 100.

Referring to fig. 3, in some embodiments, the push-pull circuit module includes: transformer 409, charging inductance 405, charging capacitance 406, first rectification power tube 407, second rectification power tube 408, full bridge circuit includes: a first half-bridge circuit and a second half-bridge circuit;

The first end of the secondary side of the transformer 409 is connected to the midpoint of the second half-bridge circuit;

In some embodiments, the motor inverter unit 200 includes: a third half-bridge circuit, a fourth half-bridge circuit, and a fifth half-bridge circuit;

the third half-bridge circuit is formed by sequentially connecting a fifth power switch tube 201 and a sixth power switch tube 202;

the fourth half-bridge circuit is formed by sequentially connecting a seventh power switch tube 203 and an eighth power switch tube 204;

The fifth half-bridge circuit is formed by sequentially connecting a ninth power switch tube 205 and a tenth power switch tube 206;

The first half-bridge circuit is formed by sequentially connecting a first power switch tube 401 and a second power switch tube 402;

the second half-bridge circuit is formed by sequentially connecting a third power switch tube 403 and a fourth power switch tube 404;

In some embodiments, the third power switch tube 403 and the fourth power switch tube 404 may be replaced by capacitors.

In some implementations, the rectifying unit 500 includes: a rectifier bridge, the rectifier bridge comprising: a first branch and a second branch;

In some embodiments, the first branch is formed by the third diode 511 and the fourth diode 512 in series; the cathode of the third diode 511 is connected with the anode of the fourth diode 512, and the first branch is connected in parallel with the power battery unit 100 through the cathode of the third diode 511 and the anode of the fourth diode 512; the second branch is formed by connecting a fifth diode 513 and a sixth diode 514 in series; the cathode of the fifth diode 513 is connected to the anode of the sixth diode 514, and the second branch is connected in parallel to the power cell unit 100 through the cathode of the fifth diode 513 and the anode of the sixth diode 514.

In some embodiments, to achieve three-phase charging, the rectifying unit 500 may further include a third branch.

In some embodiments, the first branch is formed by sequentially connecting an eleventh power switch tube 505 and a twelfth power switch tube 506, and the second branch is formed by connecting a thirteenth power switch tube 507 and a fourteenth power switch tube 508; the third branch is formed by connecting a fifteenth power switch tube 509 and a sixteenth power switch tube 510; the eleventh power switch tube 505, the twelfth power switch tube 506, the thirteenth power switch tube 507 and the fourth power switch tube 404 are NMOS tubes, and the S end of the eleventh power switch tube 505 is connected with the D end of the twelfth power switch tube 506; the S end of the thirteenth power switch tube 507 is connected with the D end of the fourteenth power switch tube 508; the S terminal of the fifteenth power switch tube 509 is connected with the D terminal of the sixteenth power switch tube 510; the eleventh power switch tube 505, the twelfth power switch tube 506, the thirteenth power switch tube 507, the fourteenth power switch tube 508, the fifteenth power switch tube 509 and the sixteenth power switch tube 510 are connected with diodes in parallel at the S end and the D end, and the diodes are conducted unidirectionally from the S end to the D end.

The midpoints of the first branch and the second branch are respectively connected with a charging interface, and L1 is the equivalent inductance of the charging interface.

In some embodiments, the first power switch tube 401, the second power switch tube 402, the third power switch tube 403 and the fourth power switch tube 404 are NMOS tubes, and the S terminal of the first power switch tube 401 is connected with the D terminal of the second power switch tube 402; the S end of the third power switch tube 403 is connected with the D end of the fourth power switch tube 404; the first branch is connected in parallel with the power battery unit 100 through the D end of the first power switch tube 401 and the S end of the second power switch tube 402; the second branch is connected in parallel to the power battery unit 100 through the D terminal of the third power switch tube 403 and the S terminal of the fourth power switch tube 404.

The diodes are connected in parallel to the S terminal and the D terminal of the first power switch tube 401, the second power switch tube 402, the third power switch tube 403 and the fourth power switch tube 404, and the diodes are turned on unidirectionally from the S terminal to the D terminal.

In some embodiments, fifth power switch tube 201, sixth power switch tube 202, seventh power switch tube 203, eighth power switch tube 204, ninth power switch tube 205, tenth power switch tube 206 are NPN diodes; the E end of the fifth power switch tube 201 is connected with the C end of the sixth power switch tube 202; the E end of the seventh power switch tube 203 is connected with the C end of the eighth power switch tube 204; the E end of the ninth power switch tube 205 is connected with the C end of the tenth power switch tube 206; the third branch is connected in parallel with the power battery unit 100 through the C end of the fifth power switch tube 201 and the E end of the sixth power switch tube 202; the fourth branch is connected in parallel with the power battery unit 100 through the C end of the seventh power switch tube 203 and the E end of the eighth power switch tube 204; the fifth branch is connected in parallel to the power battery unit 100 through the C terminal of the ninth power switch tube 205 and the E terminal of the tenth power switch tube 206.

The fifth power switch tube 201, the sixth power switch tube 202, the seventh power switch tube 203, the eighth power switch tube 204, the ninth power switch tube 205 and the tenth power switch tube 206 are connected with diodes in parallel at the E end and the S end, and the diodes are conducted unidirectionally from the E end to the S end.

The C-terminal junctions of the fifth power switching tube 201, the seventh power switching tube 203 and the ninth power switching tube 205 form a first bus terminal of the motor inverter unit 200, and the E-terminal junctions of the sixth power switching tube 202, the eighth power switching tube 204 and the tenth power switching tube 206 form a first bus terminal of the motor inverter unit 200.

Referring to fig. 6, the embodiment of the application further provides a control method of the integrated system for driving and charging of the automobile, which includes:

S1: in response to the first working condition, the change-over switch K1 is controlled to be turned off, and the motor inversion unit is controlled to work, so that the motor inversion unit 200 drives the motor system 300 to work;

s2: and responding to the second working condition, controlling the switching switch to be closed, and controlling the motor inverter unit to work so as to execute the charging operation.

In some embodiments, the first operating condition is vehicle operation and the second operating condition is charging of power cell 100.

In some embodiments, the first power switch tube 401 is controlled to be opened, the second power switch tube 402 is closed, the first rectifying power tube 407 is opened, the second rectifying power tube 408 is closed, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, the power switch tube of the first sub-circuit of the fifth half-bridge circuit is opened, the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit, and the power switch tube of the second sub-circuit of the fifth half-bridge circuit are closed during the first sub-switch period of the switch period;

In the implementation process, the first power switch 401 is conducted to establish a forward voltage for the winding of the transformer 409, the first rectifying power tube 407 and the charging inductor 405 are switched to form a push-pull stable output, and then the push-pull stable output is passed through the first winding 30a, the second winding 30b, the third winding 30c of the motor winding, the first sub-circuit of the third half-bridge circuit of the motor inverter unit, the first sub-circuit of the fourth half-bridge circuit and the first sub-circuit of the fifth half-bridge circuit to form a boost circuit to charge the power battery unit 100.

The first power switch tube 401 is controlled to be closed in a second sub-switch period of the switch period, the second power switch tube 402 is closed, the first rectifying power tube 407 is closed, the second rectifying power tube 408 is closed, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the power switch tube of the first sub-circuit of the fifth half-bridge circuit are closed, and the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the power switch tube of the second sub-circuit of the fifth half-bridge circuit are opened;

In the implementation process, the first power switch tube 401, the second power switch tube 402, the first rectifying power tube 407 and the second rectifying power tube 408 are all closed, the transformer is in a zero voltage clamping state, the charging is stopped temporarily, the charging inductor 405 freewheels, and current flows from the charging inductor 405 through the first winding 30a, the second winding 30b, the third winding 30c, the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the second sub-circuit of the fifth half-bridge circuit to form a loop.

The first power switch tube 401 is controlled to be closed, the second power switch tube 402 is opened, the first rectifying power tube 407 is closed, the second rectifying power tube 408 is opened, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, the power switch tube of the first sub-circuit of the fifth half-bridge circuit are opened, and the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the power switch tube of the second sub-circuit of the fifth half-bridge circuit are closed;

In the implementation process, the second power switch tube 402 is conducted to establish a reverse voltage for the winding of the transformer 409, the second rectifying power tube 408 and the charging inductor 405 form a push-pull rectifying stable output, and the push-pull rectifying stable output is further passed through the first winding 30a, the second winding 30b, the third winding 30c and the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the first sub-circuit of the fifth half-bridge circuit of the motor winding to form a boost circuit to charge the power battery unit 100.

The fourth sub-switching period of the switching period controls the first power switch tube 401 to be closed, the second power switch tube 402 to be closed, the first rectifying power tube 407 to be closed, the second rectifying power tube 408 to be closed, the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, the power switch tube of the first sub-circuit of the fifth half-bridge circuit to be closed, the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit, and the power switch tube of the second sub-circuit of the fifth half-bridge circuit to be opened.

In the implementation process, the first power switch tube 401, the second power switch tube 402, the first rectifying power tube 407 and the second rectifying power tube 408 are all closed, the transformer is in a zero voltage clamping state, the charging is stopped temporarily, the charging inductor 405 freewheels, current passes through the charging inductor 405, and the first winding 30a, the second winding 30b, the third winding 30c, the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the second sub-circuit of the fifth half-bridge circuit form a loop.

The time length of the first switch sub-period and the third switch sub-period is D.times.T/2, and the time length of the second switch sub-period and the fourth switch sub-period is (1-D). Times.T/2. T is the control period of the control switch, and D is the duty cycle.

For example, referring to fig. 2 to 5, the first sub-circuit of the third half-bridge circuit is a fifth power switch tube 201, the second sub-circuit of the third half-bridge circuit is a sixth power switch tube 202, the first sub-circuit of the fourth half-bridge circuit is a seventh power switch tube 203, the second sub-circuit of the fourth half-bridge circuit is an eighth power switch tube 204, the first sub-circuit of the fifth half-bridge circuit is a ninth power switch tube 205, and the second sub-circuit of the fifth half-bridge circuit is a tenth power switch tube 206.

In some embodiments, the power switching transistors of the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, and the first sub-circuit of the fifth half-bridge circuit are open, and the power switching transistors of the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit, and the second sub-circuit of the fifth half-bridge circuit are closed, comprising:

The power switch tubes of any one of the first sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are opened, and all the power switch tubes of the second sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are closed at the same time;

For example, one of the upper half-bridge fifth power switch 201, the seventh power switch 203, and the ninth power switch 205 is turned on, the other two power switch are turned off, the sixth power switch 202, the eighth power switch 204, and the tenth power switch 206 are turned off at the same time, see fig. 7, which is a schematic diagram of the working state of the power switch, the vertical axis indicates the working state, and the vertical axis does not indicate that the power switch is turned on.

Or, the power switching tubes in the first sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are conducted in an staggered mode, and all the power switching tubes in the second sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are closed at the same time;

for example, the fifth power switch 201, the seventh power switch 203, and the ninth power switch 205 of the upper half bridge are alternately turned on, and the sixth power switch 202, the eighth power switch 204, and the tenth power switch 206 are turned off at the same time, see fig. 8, which is a schematic diagram of the working state of the power switch.

Or, the power switching tubes in the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the first sub-circuit of the fifth half-bridge circuit are simultaneously conducted, and all the power switching tubes in the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the second sub-circuit of the fifth half-bridge circuit are simultaneously closed.

For example, the upper half-bridge fifth power switch 201, the seventh power switch 203, and the ninth power switch 205 are turned on at the same time, and the sixth power switch 202, the eighth power switch 204, and the tenth power switch 206 are turned off at the same time, see fig. 9, which is a schematic diagram of the working state of the power switch.

In the implementation process, the charging efficiency and the charging performance are improved.

In some embodiments, the power switching transistors of the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, and the first sub-circuit of the fifth half-bridge circuit are closed, the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit, and the second sub-circuit of the fifth half-bridge circuit are open, comprising:

for example, the upper half-bridge fifth power switch 201, the seventh power switch 203, and the ninth power switch 205 are turned off at the same time, and the sixth power switch 202, the eighth power switch 204, and the tenth power switch 206 are turned on at a certain phase, see fig. 7, which is a schematic diagram of the working state of the power switch light pipe.

Or all power switching tubes in the first sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are closed, and the power switching tubes in the second sub-circuits of the third half-bridge circuit, the fourth half-bridge circuit and the fifth half-bridge circuit are conducted in a staggered mode;

For example, the upper half-bridge fifth power switch 201, the seventh power switch 203, and the ninth power switch 205 are turned off at the same time, and the sixth power switch 202, the eighth power switch 204, and the tenth power switch 206 are turned on at a certain phase, see fig. 8, which is a schematic diagram of the working state of the power switch light pipe.

Or all power switching tubes in the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit and the first sub-circuit of the fifth half-bridge circuit are closed, and all power switching tubes in the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit and the second sub-circuit of the fifth half-bridge circuit are simultaneously conducted.

For example, the upper half-bridge fifth power switch 201, the seventh power switch 203, and the ninth power switch 205 are turned off at the same time, and the sixth power switch 202, the eighth power switch 204, and the tenth power switch 206 are turned on at a certain phase, see fig. 9, which is a schematic diagram of the working state of the power switch light pipe.

In summary, the driving and charging integrated system of the automobile provided by the application has the following advantages: multiplexing the functions of motor, electric control and charging, realizing integrated isolated charging, simplifying the electrical architecture and reducing the cost; multiplexing the power devices, reconstructing the power topology of the vehicle-mounted charger, reserving the original PFC part, omitting the original LLC main body part, adjusting the LLC main body part to be a push-pull circuit module with a simpler functional structure, and reducing the number of power switch devices; the charging application of the motor inductor can reduce the value of the original charging inductor 405, and has remarkable significance in reducing the volume and improving the performance; in the integrated charging mode, the voltage matching performance is good, the charging and discharging functions are compatible, the single-phase/three-phase power is expanded, and the practicability is high; the integrated isolated charging is realized, the system performance can be ensured, and the system cost is greatly reduced;

The application further provides an electronic device, please refer to fig. 10, and fig. 10 is a block diagram of an electronic device according to an embodiment of the application. The electronic device may include a processor 101, a communication interface 102, a memory 103, and at least one communication bus 104. Wherein the communication bus 104 is used to enable direct connection communication of these components. The communication interface 102 of the electronic device in the embodiment of the present application is used for performing signaling or data communication with other node devices. The processor 101 may be an integrated circuit chip with signal processing capabilities.

The processor 101 may be a general-purpose processor, including a central processing unit (CPU, centralProcessingUnit), a network processor (NP, networkProcessor), etc.; but may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor 101 may be any conventional processor or the like.

The Memory 103 may be, but is not limited to, random access Memory (RAM, randomAccessMemory), read Only Memory (ROM), programmable Read Only Memory (PROM, programmable Read-Only Memory), erasable Read Only Memory (EPROM, erasable Programmable Read-Only Memory), electrically erasable Read Only Memory (EEPROM, electric Erasable Programmable Read-Only Memory), etc. The memory 103 has stored therein computer readable instructions which, when executed by the processor 101, may cause the electronic device to perform the steps described above in relation to the method embodiments of fig. 1-2.

Optionally, the electronic device may further include a storage controller, an input-output unit.

The memory 103, the memory controller, the processor 101, the peripheral interface, and the input/output unit are electrically connected directly or indirectly to each other, so as to realize data transmission or interaction. For example, the elements may be electrically coupled to each other via one or more communication buses 104. The processor 101 is configured to execute executable modules stored in the memory 103, such as software functional modules or computer programs included in the electronic device.

The input-output unit is used for providing the user with the creation task and creating the starting selectable period or the preset execution time for the task so as to realize the interaction between the user and the server. The input/output unit may be, but is not limited to, a mouse, a keyboard, and the like.

It will be appreciated that the configuration shown in fig. 10 is merely illustrative, and that the electronic device may also include more or fewer components than shown in fig. 10, or have a different configuration than shown in fig. 10. The components shown in fig. 10 may be implemented in hardware, software, or a combination thereof.

The embodiment of the application also provides a vehicle, which comprises the driving and charging integrated system of the automobile.

The embodiment of the application also provides a vehicle, and a control method for executing the driving and charging integrated system of the automobile.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

In addition, functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.

The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The control method of the automobile electric drive and charging integrated system is characterized by being applied to the automobile electric drive and charging integrated system, and the automobile electric drive and charging integrated system comprises the following steps:

the motor inversion unit, the rectification unit and the charging unit are connected in parallel with the power battery unit;

the charging unit includes: a push-pull circuit module having a transformer;

The push-pull circuit module is also connected with the rectifying unit;

The push-pull circuit module includes: the full-bridge circuit comprises a transformer, a charging inductor, a charging capacitor, a first rectifying power tube, a second rectifying power tube and a full-bridge circuit, wherein the full-bridge circuit comprises: a first half-bridge circuit and a second half-bridge circuit;

the second end of the secondary side of the transformer is connected with the midpoint of the first half-bridge circuit;

The motor inverter unit includes: a third half-bridge circuit, a fourth half-bridge circuit, and a fifth half-bridge circuit;

the first half-bridge circuit is formed by sequentially connecting a first power switch tube and a second power switch tube;

The second half-bridge circuit is formed by sequentially connecting a third power switching tube and a fourth power switching tube;

The method comprises the following steps: responding to a first working condition, controlling a change-over switch to be disconnected, and controlling a motor inversion unit to work so as to enable the motor inversion unit to drive the motor system to work;

responding to a second working condition, controlling the switching switch to be closed, and controlling the motor inverter unit to work so as to execute charging operation;

The controlling the switch to be closed, controlling the motor inverter unit to work so as to execute charging operation, includes:

The method comprises the steps that a first power switch tube is controlled to be opened in a first sub-switch period of a switch period, a second power switch tube is closed, the first rectifying power tube is opened, the second rectifying power tube is closed, a first sub-circuit of a third half-bridge circuit, a first sub-circuit of a fourth half-bridge circuit and a power switch tube of a first sub-circuit of a fifth half-bridge circuit are opened, and a second sub-circuit of the third half-bridge circuit, a second sub-circuit of the fourth half-bridge circuit and a power switch tube of a second sub-circuit of the fifth half-bridge circuit are closed;

2. The method of claim 1, wherein the third half-bridge circuit first sub-circuit, the fourth half-bridge circuit first sub-circuit, the fifth half-bridge circuit first sub-circuit power switch is turned on, the third half-bridge circuit second sub-circuit, the fourth half-bridge circuit second sub-circuit power switch is turned off, and the method comprises:

3. The control method of an integrated system for driving and charging an automobile according to claim 1, wherein the closing of the power switch tubes of the first sub-circuit of the third half-bridge circuit, the first sub-circuit of the fourth half-bridge circuit, the first sub-circuit of the fifth half-bridge circuit, the second sub-circuit of the third half-bridge circuit, the second sub-circuit of the fourth half-bridge circuit, and the second sub-circuit of the fifth half-bridge circuit comprises:

4. An electronic device, comprising: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1-3 when the computer program is executed.