CN116587895A - Charging and electric drive control system and control method thereof - Google Patents
Charging and electric drive control system and control method thereof Download PDFInfo
- Publication number
- CN116587895A CN116587895A CN202310515536.6A CN202310515536A CN116587895A CN 116587895 A CN116587895 A CN 116587895A CN 202310515536 A CN202310515536 A CN 202310515536A CN 116587895 A CN116587895 A CN 116587895A
- Authority
- CN
- China
- Prior art keywords
- charging
- unit
- motor
- change
- over switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000007935 neutral effect Effects 0.000 claims abstract description 9
- 230000004044 response Effects 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 7
- 230000010354 integration Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004378 air conditioning Methods 0.000 description 16
- 230000006870 function Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000004891 communication Methods 0.000 description 7
- 238000004804 winding Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the application provides a charging and electric driving control system and a control method thereof, wherein the charging and electric driving control system comprises: the device comprises a power battery unit, a motor inversion unit, a motor system, an air conditioner compressor, a charging unit, a first change-over switch, a second change-over switch and a switch group; the motor inverter unit and the charging unit are connected in parallel between the anode and the cathode of 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; the charging unit is connected with a neutral point of the motor system through a first switching switch; the charging unit is connected with a main negative common end of the motor inversion unit through a second change-over switch; the charging unit is respectively connected with a charging interface of the automobile and an air conditioner compressor through the switch group. Through adjusting the states of the first change-over switch, the second change-over switch and the switch group, the multiplexing of the charging function and the air conditioner inversion can be realized, the electric integration advantage is fully exerted, and meanwhile, the electric structure of the whole system is simplified.
Description
Technical Field
The application relates to the technical field of new energy automobiles, in particular to a charging and electric driving control system and a control method thereof.
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 policy pressure of the national energy source '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.
The existing integrated charging and motor control system of the new energy automobile is complex in structure, so that the whole system is large in size, high in cost and insufficient in reliability.
Disclosure of Invention
The embodiment of the application aims to provide a charging and electric driving control system and a control method thereof, which have simple structures, and realize the functional multiplexing of charging and motor inversion by utilizing a motor three-phase winding in combination with the electric topology of a vehicle-mounted charger, a motor, an electric control and an air conditioner compressor; in addition, through the selection and switching of the physical switch, the electric multiplexing of charging and air conditioner inversion is realized. The advantages of electric integration are fully exerted, the electric structure of the system is greatly simplified, the number of power switch devices is reduced, an isolation transformer is omitted, the performance of the system is ensured, and the cost of the system is greatly reduced.
In a first aspect, an embodiment of the present application provides a charging and electric driving control system, including:
the device comprises a power battery unit, a motor inversion unit, a motor system, an air conditioner compressor, a charging unit, a first change-over switch, a second change-over switch and a switch group;
the motor inversion unit and the charging unit are connected in parallel between the positive electrode and the negative electrode of 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;
the charging unit is connected with a neutral point of the motor system through the first change-over switch;
the charging unit is connected with a main negative common end of the motor inversion unit through the second change-over switch;
the charging unit is respectively connected with a charging interface of the automobile and the air conditioner compressor through the switch group.
In the implementation process, compared with the prior art, the secondary full-bridge power device of the vehicle-mounted charger is canceled and multiplexed by the motor inversion unit; through first change over switch, second change over switch and switch group, realized the electrical multiplexing of charging function and air conditioner contravariant, fully played the advantage that electrical integration was done, simplified the electrical structure of entire system again simultaneously, the entire system does not need isolation transformer, has both guaranteed the performance of system, has greatly reduced the cost of system again.
Further, the charging unit includes: a half-bridge circuit, an inductor, and a rectifier circuit;
the half-bridge circuit and the rectifying circuit are connected in parallel with the anode and the cathode of the power battery unit;
the midpoint of the half-bridge circuit is connected with the neutral point of the motor system through the inductor and the first change-over switch;
and the first end of the half-bridge circuit is connected with the main negative common end of the motor inverter unit through the second change-over switch.
In the implementation process, as the middle point of the circuit of the half bridge is connected with the neutral point of the motor system through the inductor, the first change-over switch and the main negative common end of the motor inversion unit through the second change-over switch, and the states of the first change-over switch, the second change-over switch and the switch group are adjusted, the electric multiplexing of the charging function and the air conditioner inversion can be realized, the motor winding is used as the inductor, the additional inductance value is effectively reduced, the transformer of the original charging unit is replaced, and the method has remarkable significance in reducing the volume and improving the performance.
Further, the rectifying circuit includes: a first rectifying branch and a second rectifying branch; the switch group includes: a third switch and a fourth switch;
the first rectification branch is connected with a charging interface of the automobile and the air conditioner compressor through a third change-over switch;
the second rectifying branch is connected with the charging interface of the automobile and the air conditioner compressor through a fourth change-over switch.
In the implementation process, the first rectification branch is connected with a charging interface of the automobile and an air conditioner compressor through a third change-over switch; the second rectifying branch is connected with a charging interface of the automobile and an air conditioner compressor through a fourth change-over switch. The charging function and the electric multiplexing of air conditioner inversion can be realized through the first change-over switch, the second change-over switch, the third change-over switch and the fourth change-over switch.
In a second aspect, an embodiment of the present application provides a control method of a charging and electric driving control system, where the method includes:
responding to the first working mode, controlling the second change-over switch to be closed and the first change-over switch to be opened, and controlling the motor inversion unit to control the motor to run in a SVPWM mode;
and controlling the switching state of the switch group to disconnect the charging unit from the charging interface and connect the charging unit with the air conditioner compressor.
In the above process, in the first working mode, the second change-over switch is closed, the first change-over switch is turned off, the motor works normally, the charging unit is disconnected from the charging interface, and the air conditioner compressor can be controlled to perform inversion work.
Further, the method further comprises: in response to the second working mode, the second change-over switch is controlled to be opened, the first change-over switch is controlled to be closed, and the switching state of the switch group is controlled to enable the charging unit to be connected with the charging interface and disconnected with the air conditioner compressor;
and charging the power battery unit according to the power battery voltage range and the charging rectification voltage value.
In the implementation process, in the second working mode, the second change-over switch is opened, the first change-over switch is closed, the change-over state of the switch group is controlled, the charging unit is connected with the charging interface and disconnected with the air conditioner compressor, so that the power battery unit is charged, the charging function is realized by utilizing the inverter unit circuit of the air conditioner compressor, and the electrical multiplexing is realized.
Further, the charging the power battery unit according to the power battery voltage range and the charging rectification voltage value includes:
if the voltage range of the power battery is larger than the charging rectification voltage value, controlling the power device of the upper half bridge of the half bridge circuit to be normally open and the power device of the lower half bridge of the half bridge circuit to be normally closed; and controlling the working state of the battery inversion unit to charge the power battery unit.
Further, the charging the power battery unit according to the power battery voltage range and the charging rectification voltage value includes:
if the voltage range of the power battery is smaller than the charging rectification voltage value, controlling the motor inverter unit to execute normally-closed power devices of an upper half bridge and normally-open power devices of a lower half bridge of the power devices; and controlling the working state of the battery inversion unit to charge the power battery unit.
In a third aspect, an embodiment of the present application provides a control device for a charging and electrically-driven control system, including:
the first response module is used for responding to the first working mode, controlling the second change-over switch to be closed and the first change-over switch to be opened, and controlling the motor inverter unit to control the motor to run in an SVPWM mode;
the first response module is also used for controlling the second change-over switch to be closed and the first change-over switch to be opened, the motor inversion unit executes SVPWM control, and the driving motor operates normally;
the first response module is also used for controlling the switching state of the switch group, so that the charging unit is disconnected from the charging interface and is connected with the air conditioner compressor.
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.
In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, where instructions are stored, which when executed on a computer, cause the computer to perform the method according to any one of the first aspects.
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 techniques of the disclosure.
And can be implemented in accordance with the teachings of the specification, the following detailed description of the preferred embodiments of the application, taken in conjunction with the accompanying drawings.
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 diagram of a first structure of a charging and electrically-driven control system according to an embodiment of the present application;
fig. 2 is a schematic diagram of a second structure of a charging and electrically-driven control system according to an embodiment of the present application;
fig. 3 is a schematic diagram of a third structure of a charging and electrically-driven control system according to an embodiment of the present application;
fig. 4 is a fourth schematic structural diagram of a charging and electrically-driven control system according to an embodiment of the present application;
fig. 5 is a first on-off schematic diagram of an inverter unit according to an embodiment of the present application;
fig. 6 is a second schematic diagram of an inverter unit according to an embodiment of the present application;
fig. 7 is a third schematic broken view of an inverter unit according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
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.
Example 1
Referring to fig. 1, an embodiment of the present application provides a charging and electric driving control system, including:
the power battery unit 100, the motor inverter unit 200, the motor system 300, the air conditioner compressor 400, the charging unit 500, the first change-over switch k1, the second change-over switch k2 and the switch group;
the motor inverter unit 200 and the charging unit 500 are connected in parallel between the positive and negative poles of the power battery unit 100;
the motor inverter unit 200 is connected with the motor system 300, and the motor inverter unit 200 is used for controlling the working state of the motor system 300;
the charging unit 500 is connected to the neutral point 30d of the motor system 300 through the first switching switch k 1;
the charging unit 500 is connected with the main negative common terminal of the motor inverter unit 200 through the second change-over switch k 2;
the charging unit 500 is connected to the charging interface 600 of the vehicle and the air conditioning compressor 400 through the switch group.
Compared with the prior art, the secondary full-bridge power device of the vehicle-mounted charger is canceled, and the secondary full-bridge power device is multiplexed by the motor inverter unit 200; through first change over switch k1, second change over switch k2 and switch group, realized the electrical multiplexing of charging function and air conditioner contravariant, fully played the advantage that the electricity was integrated, simplified the electrical structure of entire system again simultaneously, the entire system does not need isolation transformer, has both guaranteed the performance of system, has greatly reduced the cost of system again.
In some embodiments, the power cell 100 is a high voltage energy storage unit formed by lithium ion batteries connected in series.
Referring to fig. 2, in some embodiments, the motor inverter unit 200 includes six power devices; a first switching tube 201, a second switching tube 202, a third switching tube 203, a fourth switching tube 204, a fifth switching tube 205 and a sixth switching tube 206, respectively.
The first switching tube 201 and the second switching tube 202 form a first switching branch, and a midpoint of the first switching branch is connected with the first phase 30a of the motor system 300 and is used for controlling the current output by the power battery unit 100 to the first phase of the motor system 300; the second switching tube 202 and the third switching tube 203 form a second switching branch, and the midpoint of the second switching branch is connected with the second phase 30b of the motor system 300 and is used for controlling the current output by the power battery unit 100 to the second phase of the motor system 300; the fifth switching tube 205 and the sixth switching tube 206 form a third switching branch, and a midpoint of the third switching branch is connected with the third phase 30c of the motor system 300 and is used for controlling the current output by the power battery unit 100 to the third phase of the motor system 300.
In some embodiments, the air conditioning compressor 400 is typically an electronically controlled compressor for an electric vehicle.
In some embodiments, the charging unit 500 includes: a half-bridge circuit, an inductor 403, and a rectifying circuit;
the half-bridge circuit and the rectifying circuit are connected in parallel with the anode and the cathode of the power battery unit 100;
the midpoint of the half-bridge circuit is connected to the neutral point of the motor system 300 through the inductor 403 and the first switch k 1;
the first end of the half-bridge circuit is connected with the main negative common end of the motor inverter unit 200 through the second change-over switch k 2.
In the implementation process, as the midpoint of the circuit of the half-bridge is connected with the neutral point of the motor system 300 through the inductor 403 and the first switch k1, and the end of the half-bridge circuit is connected with the main negative common end of the motor inverter unit 200 through the second switch k2, the states of the first switch k1, the second switch k2 and the switch group are adjusted, the charging function and the electric multiplexing of the air conditioner inverter can be realized, the original charging inductance value can be reduced through the inductor 403, and the significance on volume reduction and performance improvement is obvious.
In some embodiments, a half-bridge circuit includes: a first power device 401 and a second power device 402; the first power device 401 and the second power device 402 are connected in series to form a half-bridge circuit.
In some embodiments, the rectifying circuit includes: a third power device 505, a fourth power device 506, a fifth power device 507, and a sixth power device 508. The third power device 505 and the fourth power device 506 form a first rectifying branch, and the fifth power device 507 and the sixth power device 508 form a second rectifying branch.
The midpoints of the first rectifying branch and the second rectifying branch are connected with a switch group, and the midpoints of the first rectifying branch and the second rectifying branch are respectively connected with the air-conditioning compressor 400 and the charging interface 600 through the switch group. By changing the switching state of the switch group, the rectifying circuit can be connected to the charging interface 600 or the air conditioning compressor 400.
In some embodiments, the rectifying circuit includes: a first rectifying branch and a second rectifying branch; the switch group includes: a third switch k3 and a fourth switch k4;
the first rectification branch is connected with the charging interface 600 of the automobile and the air conditioner compressor 400 through a third change-over switch k 3;
the second rectifying branch is connected with the charging interface 600 of the automobile and the air-conditioning compressor 400 through a fourth change-over switch k 4.
In the implementation process, the first rectifying branch is connected with the charging interface 600 of the automobile and the air-conditioning compressor 400 through the third change-over switch k 3; the second rectification branch is connected with the charging interface 600 of the automobile and the air conditioner compressor 400 through the fourth change-over switch k 4. The first, second, third and fourth switches k1, k2, k3 and k4 can realize the electrical multiplexing of the charging function and the air conditioner inversion.
In some embodiments, the first phase of the air-conditioning compressor 400 is connected to a midpoint of the half-bridge circuit of the charging unit 500, the second phase of the air-conditioning compressor 400 is connected to a midpoint of the first rectifying circuit through the third switch k3, and the third phase of the air-conditioning compressor 400 is connected to a midpoint of the second rectifying circuit through the fourth switch k 4.
In some embodiments, the charging and electrically-driven control system further comprises a control unit 700, wherein the control unit 700 is connected with other devices and is used for controlling the working states of the other devices.
In summary, the electric integration level of the charging and electric drive control system is higher, the practicability is stronger, the charging unit 500, the motor inversion unit 200 and the motor system 300 are connected in series to form a Buck-Boost power conversion circuit, the problems of voltage rising and dropping, charging and discharging can be solved, the voltage matching performance is good, the power factor adjustment can be realized, and the charging efficiency is ensured. Through carrying out multiplexing on the function on the basis of electric integration, utilized motor three-phase winding, simplified the electric framework, reduced power device by a wide margin, saved the transformer, provided the solution to the voltage matching problem of non-isolated charging, motor shake etc. through simple physical switch switching, perfect realization charges and the electric multiplexing of air conditioner contravariant.
Based on the above provided charging and electrically-driven control system, an embodiment of the present application provides a control method, which can be applied to a control unit 700 charged in an electrically-driven control system, and the method includes:
in response to the first working mode, the second change-over switch k2 is controlled to be closed, the first change-over switch k1 is controlled to be opened, and the motor inverter unit 200 is controlled to control the motor to run in a SVPWM mode;
the switching state of the switch group is controlled to disconnect the charging unit 500 from the charging interface 600 and connect it to the air conditioner compressor 400.
In some embodiments, the first mode of operation is during normal operation of the vehicle.
In the above process, in the first operation mode, the second switch k2 is closed, the first switch k1 is opened, the motor is normally operated, the charging unit 500 is disconnected from the charging interface 600, and the air conditioner compressor 400 is controlled to perform the inversion operation.
In some embodiments, referring to fig. 3, the control unit 700 controls the second switching switch k2 to be in a closed state and the first switching switch k1 to be in an open state, and the motor inverter unit 200 performs SVPWM control to drive the motor to operate normally; the control unit 700 controls the multi-way switch third switch k3 and the fourth switch k4 to be at the position a, the charging unit 500 is disconnected from the charging interface 600 and connected with the air-conditioning compressor 400, and the integrated control unit 700 can control the air-conditioning compressor 400 to perform inversion operation according to the control result, and at this time, the current flowing direction output by the power battery unit 100 is shown in fig. 3.
In some embodiments, the method further comprises: in response to the second operation mode, the second switch k2 is controlled to be opened, the first switch k1 is controlled to be closed, and the switching state of the switch group is controlled to enable the charging unit 500 to be connected with the charging interface 600 and disconnected with the air-conditioning compressor 400;
the power battery unit 100 is charged according to the power battery voltage range and the charging rectified voltage value.
Referring to fig. 4, in some embodiments, the integrated control unit 700 controls the second switch k2 of the switch to be opened, the first switch k1 of the switch to be closed, and the third switch k3 and the fourth switch k4 of the multi-way switch to be at the position b, and the current flowing direction output by the power battery unit 100 is shown in fig. 4.
In the above implementation process, in the second working mode, the second switch k2 is opened, the first switch k1 is closed, and the switching state of the switch group is controlled, so that the charging unit 500 is connected with the charging interface 600 and disconnected with the air-conditioning compressor 400, thereby implementing charging of the power battery unit 100, implementing charging function by using the air-conditioning compressor 400, and implementing electrical multiplexing.
In some embodiments, the charging the power battery unit 100 according to the power battery voltage range and the charging rectified voltage value includes:
if the voltage range of the power battery is larger than the charging rectification voltage value, controlling the power device of the upper half bridge of the half bridge circuit to be normally open and the power device of the lower half bridge of the half bridge circuit to be normally closed; and controlling the working state of the battery inversion unit to boost and charge the power battery unit.
Illustratively, if the power battery voltage range is greater than the charging rectified voltage value, then Boost mode is performed: the charging unit 500 executes that the upper and lower half bridges of the power devices are respectively normally closed and normally open, namely, the first power device 401 is normally closed and the second power device 402 is normally open; the three-phase bridge of the motor inverter unit 200, the inductor 403 and the three-phase windings of the motor form a Boost circuit, and the control unit 700 performs Boost charging control, that is, controls the operating state of the switching tube in the motor inverter unit 200 to charge the power battery unit 100.
The control mode comprises the following steps: mode 1: referring to fig. 5, according to the charging power, the upper and lower half-bridges of the three-phase bridge are controlled to be alternately turned on and off, wherein the first switching tube 201, the third switching tube 203, and the fifth switching tube 205 of the upper half-bridge are operated simultaneously, and the second switching tube 202, the fourth switching tube 204, and the sixth switching tube 206 are operated simultaneously; the charge and discharge control of the power battery is realized by adjusting the on duty ratio; mode 2: referring to fig. 6, the three half-bridges perform the staggered control, that is, the upper half-bridge second switching tube 202 is staggered on and off in the same switching period, and the second switching tube 202 is staggered on and off; under the condition of keeping the charging power unchanged, the current ripple is effectively reduced, and the performance is improved; in the mode 3, referring to fig. 7, two branches are shielded, only one of the two branches is controlled to be alternately turned on and off, for example, the first switching tube 201 and the second switching tube 202 are alternately operated, the third switching tube 203, the fourth switching tube 204, the fifth switching tube 205 and the sixth switching tube 206 are all normally opened, so that the loss of switching devices is reduced, meanwhile, the parallel connection of two paths of motor inductors 403 is reduced, the value of the series-connected equivalent inductor 403 is increased, and the improvement of the regulation performance is facilitated; the torque jitter problem caused by the current of the three-phase winding of the motor can not occur.
In some embodiments, the charging the power battery unit 100 according to the power battery voltage range and the charging rectified voltage value includes:
if the voltage range of the power battery is smaller than the charging rectification voltage value, controlling the motor inverter unit 200 to execute normally-closed power devices of an upper half bridge and normally-open power devices of a lower half bridge of the power devices; and controlling the working state of the battery inversion unit to charge the power battery unit.
Illustratively, the motor inverter unit 200 performs that the upper and lower half-bridges of the power devices are normally closed and normally open respectively, that is, the first switching tube 201, the third switching tube 203, the fifth switching tube 205 are normally closed, and the second switching tube 202, the fourth switching tube 204, and the sixth switching tube 206 are normally open;
at this time, the charging unit 500 comprises upper and lower half-bridges, a series charging inductor 403, and three-phase windings of the motor, so as to form a Buck circuit, and the control unit 700 executes Buck charging control, that is, controls the upper and lower half-bridge first power device 401 and the second power device 402 to be alternately turned on and off according to the target charging power, and realizes charging and discharging control of the power battery by adjusting the duty ratio of conduction.
The embodiment of the application also provides a control device of the charging and electric drive control system, which comprises:
the first response module is used for responding to the first working mode, controlling the second change-over switch k2 to be closed and the first change-over switch k1 to be opened, and controlling the motor inverter unit 200 to control the motor to run in a SVPWM mode;
the first response module is further used for controlling the second switch k2 to be closed and the first switch k1 to be opened, the motor inverter unit 200 executes SVPWM control, and the driving motor operates normally;
the first response module is further configured to control a switching state of the switch group, so that the charging unit 500 is disconnected from the charging interface 600 and connected to the air-conditioning compressor 400.
In some embodiments, the apparatus further comprises: the second response module is configured to control the second switch k2 to be opened and the first switch k1 to be closed in response to the second operation mode, and control the switching state of the switch group, so that the charging unit 500 is connected with the charging interface 600 and disconnected with the air-conditioning compressor 400;
the power battery unit 100 is charged according to the power battery voltage range and the charging rectified voltage value.
The apparatus is further capable of executing each embodiment of the above method, and will not be described here again.
The application further provides an electronic device, please refer to fig. 8, and fig. 8 is a block diagram of an electronic device according to an embodiment of the application. The electronic device may include a processor 81, a communication interface 82, a memory 83, and at least one communication bus 84. Wherein the communication bus 84 is used to enable direct connection communication of these components. The communication interface 82 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 81 may be an integrated circuit chip with signal processing capabilities.
The processor 81 may be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), 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. The general purpose processor may be a microprocessor or the processor 81 may be any conventional processor or the like.
The Memory 83 may be, but is not limited to, random access Memory (Random Access Memory, RAM), read Only Memory (ROM), programmable Read Only Memory (Programmable Read-Only Memory, PROM), erasable Read Only Memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable Read Only Memory (Electric Erasable Programmable Read-Only Memory, EEPROM), etc. The memory 83 has stored therein computer readable instructions which, when executed by the processor 81, can perform the steps involved in the above-described method embodiments.
Optionally, the electronic device may further include a storage controller, an input-output unit.
The memory 83, the memory controller, the processor 81, 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 components may be electrically coupled to each other via one or more communication buses 84. The processor 81 is arranged to execute executable modules stored in the memory 83, such as software functional modules or computer programs comprised by 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. 8 is merely illustrative, and that the electronic device may also include more or fewer components than shown in fig. 8, or have a different configuration than shown in fig. 8. The components shown in fig. 8 may be implemented in hardware, software, or a combination thereof.
The embodiment of the application also provides a computer readable storage medium, on which instructions are stored, which when executed on a computer, implement the method of the method embodiment when the computer program is executed by a processor, and in order to avoid repetition, no further description is given here.
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 U-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 (10)
1. A charging and electrically driven control system, comprising:
the device comprises a power battery unit, a motor inversion unit, a motor system, an air conditioner compressor, a charging unit, a first change-over switch, a second change-over switch and a switch group;
the motor inversion unit and the charging unit are connected in parallel between the positive electrode and the negative electrode of 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;
the charging unit is connected with a neutral point of the motor system through the first change-over switch;
the charging unit is connected with a main negative common end of the motor inversion unit through the second change-over switch;
the charging unit is respectively connected with a charging interface of the automobile and the air conditioner compressor through the switch group.
2. The charging and electrically driven control system according to claim 1, wherein the charging unit includes: a half-bridge circuit, an inductor, and a rectifier circuit;
the half-bridge circuit and the rectifying circuit are connected in parallel with the anode and the cathode of the power battery unit;
the midpoint of the half-bridge circuit is connected with the neutral point of the motor system through the inductor and the first change-over switch;
and the first end of the half-bridge circuit is connected with the main negative common end of the motor inverter unit through the second change-over switch.
3. The charge and drive control system of claim 2, wherein the rectifying circuit comprises: a first rectifying branch and a second rectifying branch; the switch group includes: a third switch and a fourth switch;
the first rectification branch is connected with a charging interface of the automobile and the air conditioner compressor through a third change-over switch;
the second rectifying branch is connected with the charging interface of the automobile and the air conditioner compressor through a fourth change-over switch.
4. A charging and electrically driven control system control method, characterized by being applied to the charging and electrically driven control system according to any one of claims 1 to 3, the method comprising:
responding to the first working mode, controlling the second change-over switch to be closed and the first change-over switch to be opened, and controlling the motor inversion unit to control the motor to run in a SVPWM mode;
and controlling the switching state of the switch group to disconnect the charging unit from the charging interface and connect the charging unit with the air conditioner compressor.
5. The method for controlling a charge and drive control system according to claim 4, wherein,
in response to the second working mode, the second change-over switch is controlled to be opened, the first change-over switch is controlled to be closed, and the switching state of the switch group is controlled to enable the charging unit to be connected with the charging interface and disconnected with the air conditioner compressor;
and charging the power battery unit according to the power battery voltage range and the charging rectification voltage value.
6. The method of claim 5, wherein charging the power battery unit according to the power battery voltage range and the charging rectified voltage value comprises:
if the voltage range of the power battery is larger than the charging rectification voltage value, controlling the power device of the upper half bridge of the half bridge circuit to be normally open and the power device of the lower half bridge of the half bridge circuit to be normally closed; and controlling the working state of the battery inversion unit to charge the power battery unit.
7. The method of claim 6, wherein charging the power cell according to the power cell voltage range and the charging rectified voltage value comprises:
if the voltage range of the power battery is smaller than the charging rectification voltage value, controlling the motor inverter unit to execute normally-closed power devices of an upper half bridge and normally-open power devices of a lower half bridge of the power devices; and controlling the working state of the battery inversion unit to charge the power battery unit.
8. A charging and electrically driven control system control device, comprising:
the first response module is used for responding to the first working mode, controlling the second change-over switch to be closed and the first change-over switch to be opened, and controlling the motor inverter unit to control the motor to run in a SVPWM mode;
the first response module is also used for controlling the second change-over switch to be closed and the first change-over switch to be opened, the motor inversion unit executes SVPWM control, and the driving motor operates normally;
the first response module is also used for controlling the switching state of the switch group, so that the charging unit is disconnected from the charging interface and is connected with the air conditioner compressor.
9. An electronic device, comprising: 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 of claims 4-7 when the computer program is executed.
10. A computer readable storage medium having instructions stored thereon which, when run on a computer, cause the computer to perform the method of any of claims 4-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310515536.6A CN116587895A (en) | 2023-05-08 | 2023-05-08 | Charging and electric drive control system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310515536.6A CN116587895A (en) | 2023-05-08 | 2023-05-08 | Charging and electric drive control system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116587895A true CN116587895A (en) | 2023-08-15 |
Family
ID=87593039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310515536.6A Pending CN116587895A (en) | 2023-05-08 | 2023-05-08 | Charging and electric drive control system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116587895A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707102A (en) * | 2023-08-09 | 2023-09-05 | 广汽埃安新能源汽车股份有限公司 | Electric drive and charge integrated system, control method, vehicle and electronic device |
-
2023
- 2023-05-08 CN CN202310515536.6A patent/CN116587895A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116707102A (en) * | 2023-08-09 | 2023-09-05 | 广汽埃安新能源汽车股份有限公司 | Electric drive and charge integrated system, control method, vehicle and electronic device |
| CN116707102B (en) * | 2023-08-09 | 2024-01-19 | 广汽埃安新能源汽车股份有限公司 | Electric drive and charge integrated system, control method, vehicle and electronic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2019410616B2 (en) | Charging method for power battery, motor control circuit and vehicle | |
| CN114074561B (en) | Energy conversion device, operation method thereof and electric automobile | |
| CN109130891B (en) | Composite topological structure of multi-mode hybrid energy storage system of electric vehicle and control method | |
| EP4151459A1 (en) | Energy conversion device and vehicle | |
| JP5842278B2 (en) | Current reversing DC / DC boost converter | |
| US20120069604A1 (en) | Compact power converter with high efficiency in operation | |
| Dusmez et al. | A novel low cost integrated on-board charger topology for electric vehicles and plug-in hybrid electric vehicles | |
| JP2011103761A (en) | Power conversion device | |
| CN109641531A (en) | Drive system particularly for vehicle and the method for heat driven system | |
| Kacetl et al. | Design and analysis of modular multilevel reconfigurable battery converters for variable bus voltage powertrains | |
| Garg et al. | High efficiency three phase interleaved buck converter for fast charging of EV | |
| JP5446054B2 (en) | Power system | |
| US11699957B2 (en) | Energy conversion system, energy conversion method, and power system | |
| CN116587895A (en) | Charging and electric drive control system and control method thereof | |
| CN112152489B (en) | High-low voltage direct current dual-output integrated three-phase PWM rectifier converter and control method | |
| EP3893376A1 (en) | Power conversion method | |
| Bat-Orgil et al. | Cell equalizer for recycling batteries from hybrid electric vehicles | |
| Bento et al. | Performance Assessment of Two Alternative DC-DC Converter Topologies for EV Charging Applications | |
| CN116160874A (en) | Integrated charge-discharge device, power system comprising same and vehicle | |
| CN114374024A (en) | Heating control method and device for power battery and electric automobile | |
| CN113346589A (en) | Battery management system with bidirectional voltage-regulating charge-discharge function and management method | |
| Senesky et al. | Battery module balancing with a cascaded h-bridge multilevel inverter | |
| CN116722633B (en) | Automobile electric drive and charging integrated system, vehicle and electronic equipment | |
| KR20200068410A (en) | On board charger | |
| CN117134401B (en) | DC/DC converter for hydrogen fuel cell vehicle and hydrogen fuel cell vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |