A charging and electric drive control system and a control method thereof

Abstract

The embodiment of the application provides a charging and electric drive control system and a control method thereof, wherein the charging and electric drive control system comprises: a power battery unit, a motor inverter unit, a motor system, an air conditioner compressor, a charging unit, a first switch, a second switch, and a switch group; the motor inverter unit and the charging unit are connected in parallel between the positive and negative poles of the power battery unit; the motor inverter 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 the neutral point of the motor system through the first switch; the charging unit is connected with the main negative common end of the motor inverter unit through the second switch; and the charging unit is connected with the charging interface of the automobile and the air conditioner compressor through the switch group. By adjusting the states of the first switch, the second switch and the switch group, the charging function and the air conditioner inverter can be multiplexed, the electrical integration advantage is fully exerted, and the electrical structure of the whole system is simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy vehicles, in particular to a charging and electric drive control system and a control method thereof. BACKGROUND

[0002] In recent years, China's new energy vehicles have entered an era of rapid development, and the penetration rate of new energy vehicles has reached 30%. A fully electrified era is opening up. At the same time, with the policy pressure of the country's energy "double carbon" target, the energy consumption target of electric vehicles has become increasingly demanding, and the improvement of vehicle energy efficiency technology has gradually become a research hotspot. The weight, cost and performance requirements of the whole vehicle, system and parts are increasingly demanding, especially in the field of motor drive and charging technology, the system is developing towards high pressure and integration.

[0003] The existing integrated charging and motor control system of new energy vehicles has a complex structure, resulting in a large overall system size, high cost and insufficient reliability. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a charging and electric drive control system and a control method thereof, which has a simple structure, combines the electrical topology of the on-board charger, motor, electric control and air conditioner compressor, uses the motor three-phase winding, and realizes the functional reuse of charging and motor inverter. In addition, by selecting and switching the physical switch, the electrical reuse of charging and air conditioner inverter is realized. The advantages of electrical integration are fully utilized, the system electrical structure is greatly simplified, the number of power switch devices is reduced, and the isolation transformer is cancelled, which not only ensures the performance of the system, but also greatly reduces the cost of the system.

[0005] In a first aspect, the embodiments of the present application provide a charging and electric drive control system, comprising:

[0006] a power battery unit, a motor inverter unit, a motor system, an air conditioner compressor, a charging unit, a first switching switch, a second switching switch, and a switch group;

[0007] The motor inverter unit and the charging unit are connected in parallel between the positive and negative electrodes of the power battery unit;

[0008] The motor inverter unit and the motor system are connected, and the motor inverter unit is used to control the working state of the motor system;

[0009] The charging unit is connected through the neutral point of the motor system and the first switching switch;

[0010] The charging unit is connected through the main negative common end of the motor inverter unit and the second switching switch;

[0011] The charging unit is connected with the charging interface of the automobile and the air conditioner compressor through the switch group respectively.

[0012] In the implementation process, compared with the prior art, the secondary side full-bridge power device of the on-board charger is cancelled and reused by the motor inverter unit; the electrical reuse of the charging function and the air conditioner inverter is realized through the first switching switch, the second switching switch and the switch group, the advantages of electrical integration are fully played, the electrical structure of the whole system is simplified, the whole system does not need an isolation transformer, the performance of the system is ensured, and the cost of the system is greatly reduced.

[0013] Further, the charging unit comprises a half-bridge circuit, an inductor and a rectifier circuit.

[0014] The half-bridge circuit and the rectifier circuit are connected in parallel to the positive and negative poles of the power battery unit.

[0015] The midpoint of the half-bridge circuit is connected through the inductor, the first switching switch and the neutral point of the motor system.

[0016] The first end of the half-bridge circuit is connected through the second switching switch and the main negative common end of the motor inverter unit.

[0017] In the implementation process, since the midpoint of the half-bridge circuit is connected through the inductor, the first switching switch and the neutral point of the motor system, and the first end of the half-bridge circuit is connected through the second switching switch and the main negative common end of the motor inverter unit, the electrical reuse of the charging function and the air conditioner inverter can be realized by adjusting the states of the first switching switch, the second switching switch and the switch group, the motor winding is used as an inductor, the additional inductance value is effectively reduced, the original charging unit transformer device is replaced, the volume is reduced, and the performance is improved.

[0018] Further, the rectifier circuit comprises a first rectifier branch and a second rectifier branch; and the switch group comprises a third switching switch and a fourth switching switch.

[0019] The first rectifier branch is connected with the charging interface of the automobile and the air conditioner compressor through the third switching switch.

[0020] The second rectifier branch is connected with the charging interface of the automobile and the air conditioner compressor through the fourth switching switch.

[0021] In the implementation process, the first rectifier branch is connected with the charging interface of the automobile and the air conditioner compressor through the third switching switch; and the second rectifier branch is connected with the charging interface of the automobile and the air conditioner compressor through the fourth switching switch. The electrical reuse of the charging function and the air conditioner inverter can be realized through the first switching switch, the second switching switch, the third switching switch and the fourth switching switch.

[0022] In a second aspect, the embodiments of the present application provide a charging and electric drive control system control method, which comprises:

[0023] In response to the first working mode, the second switch is closed, the first switch is opened, and the motor inverter unit is controlled to control the motor to operate in an SVPWM mode.

[0024] The switching state of the switch group is controlled to disconnect the charging unit from the charging interface and connect the charging unit to the air conditioner compressor.

[0025] In the above process, in the first working mode, the second switch is closed, the first switch is opened, the motor operates normally, and the charging unit is disconnected from the charging interface. At this time, the air conditioner compressor can be controlled to operate in an inverter mode.

[0026] Further, the method further comprises: in response to the second working mode, the second switch is opened, the first switch is closed, and the switching state of the switch group is controlled to connect the charging unit to the charging interface and disconnect the charging unit from the air conditioner compressor.

[0027] The power battery unit is charged according to the power battery voltage range and the charging rectification voltage value.

[0028] In the above implementation process, in the second working mode, the second switch is opened, the first switch is closed, and the switching state of the switch group is controlled to connect the charging unit to the charging interface and disconnect the charging unit from the air conditioner compressor, so as to charge the power battery unit and realize the charging function by using the air conditioner compressor inverter unit circuit and realize electrical multiplexing.

[0029] Further, the charging of the power battery unit according to the power battery voltage range and the charging rectification voltage value comprises:

[0030] If the power battery voltage range is greater than the charging rectification voltage value, the power device of the upper half-bridge of the half-bridge circuit is controlled to be always on, and the power device of the lower half-bridge of the half-bridge circuit is controlled to be always off. The working state of the battery inverter unit is controlled to charge the power battery unit.

[0031] Further, the charging of the power battery unit according to the power battery voltage range and the charging rectification voltage value comprises:

[0032] If the power battery voltage range is less than the charging rectification voltage value, the power device of the upper half-bridge of the motor inverter unit is controlled to be always off, and the power device of the lower half-bridge of the motor inverter unit is controlled to be always on. The working state of the battery inverter unit is controlled to charge the power battery unit.

[0033] In a third aspect, the embodiments of the present application provide a charging and electric drive control system control device, which comprises:

[0034] The first response module is configured to, in response to the first working mode, control the second switch to be closed and the first switch to be opened, and control the motor inverter unit to control the motor to operate in the SVPWM mode.

[0035] The first response module is further configured to control the second switch to be closed and the first switch to be opened, and control the motor inverter unit to drive the motor to operate normally.

[0036] The first response module is further configured to control the switching state of the switch group, so that the charging unit is disconnected from the charging interface and connected to the air conditioner compressor.

[0037] In a fourth aspect, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the processor executes the computer program, the steps of the method according to any one of the first aspect are implemented.

[0038] In a fifth aspect, a computer readable storage medium is provided, which stores instructions. When the instructions run on a computer, the computer executes the method according to any one of the first aspect.

[0039] Other features and advantages of the present disclosure will be described in the following description, or can be learned from the description, or can be determined without any doubt, or can be known by implementing the above-mentioned technologies of the present disclosure.

[0040] And can be implemented in accordance with the content of the specification, the following with the preferred embodiments of the present application and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0042] Figure 1 The first structure schematic diagram of the charging and electric drive control system provided by the embodiments of the present application;

[0043] Figure 2 The second structure schematic diagram of the charging and electric drive control system provided by the embodiments of the present application;

[0044] Figure 3 The third structure schematic diagram of the charging and electric drive control system provided by the embodiments of the present application;

[0045] Figure 4 A fourth structural schematic diagram of a charging and electric drive control system provided by an embodiment of the present application is provided.

[0046] Figure 5 A first on-off schematic diagram of an inverter unit provided by an embodiment of the present application is provided.

[0047] Figure 6 A second on-off schematic diagram of an inverter unit provided by an embodiment of the present application is provided.

[0048] Figure 7 A third on-off schematic diagram of an inverter unit provided by an embodiment of the present application is provided.

[0049] Figure 8 A structural schematic diagram of an electronic device provided by an embodiment of the present application is provided. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0051] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms “first”, “second”, etc. are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0052] Embodiment 1

[0053] Referring to Figure 1 , the present application provides a charging and electric drive control system, comprising:

[0054] a power battery unit 100, a motor inverter unit 200, a motor system 300, an air conditioner compressor 400, a charging unit 500, a first switching switch k1, a second switching switch k2, and a switch group;

[0055] The motor inverter unit 200 and the charging unit 500 are connected in parallel between the positive and negative electrodes of the power battery unit 100;

[0056] 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;

[0057] The charging unit 500 is connected with the neutral point 30d of the motor system 300 through the first switching switch k1;

[0058] The charging unit 500 is connected with the main negative common end of the motor inverter unit 200 through the second switching switch k2.

[0059] The charging unit 500 is connected with the charging interface 600 of the automobile and the air conditioner compressor 400 through the switch group respectively.

[0060] Compared with the prior art, the secondary side full-bridge power device of the on-board charger is canceled and is multiplexed by the motor inverter unit 200; the electrical multiplexing of the charging function and the air conditioner inverter is realized through the first switching switch k1, the second switching switch k2 and the switch group, the advantages of electrical integration are fully exerted, the electrical structure of the whole system is simplified, the whole system does not need an isolation transformer, the performance of the system is ensured, and the cost of the system is greatly reduced.

[0061] In some embodiments, the power battery unit 100 is a high-voltage energy storage unit composed of lithium ion batteries in series.

[0062] Referring to Figure 2 In some embodiments, the motor inverter unit 200 includes six power devices, which are a first switch tube 201, a second switch tube 202, a third switch tube 203, a fourth switch tube 204, a fifth switch tube 205 and a sixth switch tube 206 respectively.

[0063] The first switch tube 201 and the second switch tube 202 form a first switch branch, the midpoint of the first switch 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 switch tube 202 and the third switch tube 203 form a second switch branch, the midpoint of the second switch 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 switch tube 205 and the sixth switch tube 206 form a third switch branch, the midpoint of the third switch 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.

[0064] In some embodiments, the air conditioner compressor 400 is usually an electric control compressor for an electric vehicle.

[0065] In some embodiments, the charging unit 500 includes a half-bridge circuit, an inductor 403 and a rectifier circuit.

[0066] The half-bridge circuit and the rectifier circuit are connected in parallel to the positive and negative electrodes of the power battery unit 100.

[0067] The midpoint of the half-bridge circuit is connected with the neutral point of the motor system 300 through the inductor 403, the first switching switch k1 and the motor system 300.

[0068] The first end of the half-bridge circuit is connected to the main negative common end of the motor inverter unit 200 through the second switch k2.

[0069] In the above implementation process, since the midpoint of the half-bridge circuit is connected to the neutral point of the motor system 300 through the inductor 403, the first switch k1, and the main negative common end of the motor inverter unit 200, and the first end of the half-bridge circuit is connected to the main negative common end of the motor inverter unit 200 through the second switch k2, by adjusting the states of the first switch k1, the second switch k2, and the switch group, the electrical multiplexing of the charging function and the air conditioner inverter can be realized, and by the inductor 403, the original charging inductance value can be reduced, which is of great significance to reducing the size and improving the performance.

[0070] In some embodiments, the 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.

[0071] In some embodiments, the rectifier 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 rectifier branch, and the fifth power device 507 and the sixth power device 508 form a second rectifier branch.

[0072] The midpoint of the first rectifier branch and the midpoint of the second rectifier branch are connected to the switch group, and the midpoint of the first rectifier branch and the midpoint of the second rectifier branch are respectively connected to the air conditioner compressor 400 and the charging interface 600 through the switch group. By changing the switching state of the switch group, the rectifier circuit can be connected to the charging interface 600 or the air conditioner compressor 400.

[0073] In some embodiments, the rectifier circuit includes: a first rectifier branch and a second rectifier branch; the switch group includes: a third switch k3 and a fourth switch k4;

[0074] The first rectifier branch is connected to the charging interface 600 of the automobile and the air conditioner compressor 400 through the third switch k3;

[0075] The second rectifier branch is connected to the charging interface 600 of the automobile and the air conditioner compressor 400 through the fourth switch k4.

[0076] In the above implementation process, the first rectifier branch is connected to the charging interface 600 of the automobile and the air conditioner compressor 400 through the third switch k3, and the second rectifier branch is connected to the charging interface 600 of the automobile and the air conditioner compressor 400 through the fourth switch k4. By the first switch k1, the second switch k2, the third switch k3, and the fourth switch k4, the electrical multiplexing of the charging function and the air conditioner inverter can be realized.

[0077] In some embodiments, the first phase of the air conditioner compressor 400 and the half-bridge circuit midpoint of the charging unit 500 are connected, the second phase of the air conditioner compressor 400 is connected through the third switching switch k3 and the midpoint of the first rectifier circuit, and the third phase of the air conditioner compressor 400 is connected through the fourth switching switch k4 and the midpoint of the second rectifier circuit.

[0078] In some embodiments, the charging and electric drive control system further comprises a control unit 700 connected with other devices for controlling the working state of other devices.

[0079] In summary, the electrical integration of the charging and electric drive control system is higher, and the practicability is stronger. By connecting the charging unit 500, the motor inverter unit 200 and the motor system 300 in series to form a Buck-Boost power conversion circuit, the voltage matching is good, the power factor can be adjusted, and the charging efficiency can be ensured. By reusing the functions on the basis of electrical integration, the motor three-phase winding is used, the electrical architecture is simplified, the power devices are greatly reduced, the transformer is saved, and the voltage matching problem of non-isolated charging, motor jitter and the like are solved. By simple physical switch switching, the electrical reuse of charging and air conditioner inverter is perfectly realized.

[0080] Based on the charging and electric drive control system provided above, the embodiments of the present application provide a control method, which can be applied to the control unit 700 in the charging and electric drive control system, and the method comprises:

[0081] In response to the first working mode, the second switching switch k2 is closed, the first switching switch k1 is opened, and the motor inverter unit 200 is controlled in SVPWM mode to control the motor to operate;

[0082] The switching state of the switch group is controlled to disconnect the charging unit 500 from the charging interface 600 and connect the charging unit 500 with the air conditioner compressor 400.

[0083] In some embodiments, the first working mode is the normal operating condition of the automobile.

[0084] In the above process, in the first working mode, the second switching switch k2 is closed, the first switching switch k1 is opened, the motor operates normally, the charging unit 500 is disconnected from the charging interface 600, and the air conditioner compressor 400 can be controlled to operate in inverter mode.

[0085] In some embodiments, referring to Figure 3, the control unit 700 controls the second switch k2 to be in a closed state, the first switch k1 to be in an open state, the motor inverter unit 200 to perform SVPWM control, and the motor to be driven to operate normally; the control unit 700 controls the third switch k3 and the fourth switch k4 of the multi-way switch to be in position a, the charging unit 500 to be disconnected from the charging interface 600 and connected to the air conditioner compressor 400, and the integrated control unit 700 to control the air conditioner compressor 400 to operate in an inverter mode. At this time, the current flowing direction of the power battery unit 100 is as shown in Figure 3 .

[0086] In some embodiments, the method further comprises, in response to the second working mode, controlling the second switch k2 to be open and the first switch k1 to be closed, and controlling the switching state of the switch group so that the charging unit 500 is connected to the charging interface 600 and disconnected from the air conditioner compressor 400.

[0087] The power battery unit 100 is charged according to the power battery voltage range and the charging rectification voltage value.

[0088] Referring to Figure 4 In some embodiments, the integrated control unit 700 controls the second switch k2 to be open and the first switch k1 to be closed, and the third switch k3 and the fourth switch k4 of the multi-way switch to be in position b. At this time, the current flowing direction of the power battery unit 100 is as shown in Figure 4 .

[0089] In the above implementation process, in the second working mode, the second switch k2 is open and the first switch k1 is closed, the switching state of the switch group is controlled so that the charging unit 500 is connected to the charging interface 600 and disconnected from the air conditioner compressor 400, thereby realizing charging of the power battery unit 100, realizing the charging function by using the air conditioner compressor 400, and realizing electrical multiplexing.

[0090] In some embodiments, the charging of the power battery unit 100 according to the power battery voltage range and the charging rectification voltage value comprises:

[0091] If the power battery voltage range is greater than the charging rectification voltage value, the power device of the upper half-bridge of the half-bridge circuit is controlled to be always on, and the power device of the lower half-bridge of the half-bridge circuit is controlled to be always off; the working state of the battery inverter unit is controlled to charge the power battery unit in a boost mode.

[0092] Exemplarily, if the power battery voltage range is greater than the charging rectification voltage value, the Boost mode is executed: the charging unit 500 executes the upper and lower half-bridges of the power devices to be respectively normally closed and normally open, that is, 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 winding of the motor form a Boost circuit, and the control unit 700 executes the Boost voltage charging control, that is, controls the working state of the switch tube in the motor inverter unit 200 to charge the power battery unit 100.

[0093] The control mode includes: mode 1: referring to Figure 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 turned off, respectively, wherein the first switch tube 201, the third switch tube 203 and the fifth switch tube 205 are simultaneously actuated, and the second switch tube 202, the fourth switch tube 204 and the sixth switch tube 206 are simultaneously actuated; by adjusting the on-duty ratio, the charging and discharging control of the power battery is realized; mode 2: referring to Figure 6 , the three half-bridges execute staggered control, that is, the second switch tube 202 of the upper half-bridge is staggered to be turned on and turned off in the same switching cycle, and the second switch tube 202 is staggered to be turned on and turned off; in this way, the current ripple is effectively reduced and the performance is improved while keeping the charging power unchanged; mode 3: referring to Figure 7 , two branches are shielded, and only one of the upper and lower half-bridges is controlled to be alternately turned on and turned off, such as the alternation of the first switch tube 201 and the second switch tube 202, and the third switch tube 203, the fourth switch tube 204, the fifth switch tube 205 and the sixth switch tube 206 are normally open, which helps to reduce the switching device loss, and at the same time, the parallel connection of two motor inductors 403 is less, and the equivalent inductance 403 value increases, which helps to improve the regulation performance; and the torque jitter problem caused by the current of the three-phase winding of the motor will not occur.

[0094] In some embodiments, the charging of the power battery unit 100 according to the power battery voltage range and the charging rectification voltage value includes:

[0095] If the power battery voltage range is less than the charging rectification voltage value, the power device of the upper half-bridge of the motor inverter unit 200 is controlled to be normally closed, and the power device of the lower half-bridge is controlled to be normally open; the working state of the battery inverter unit is controlled to charge the power battery unit.

[0096] Exemplarily, the motor inverter unit 200 executes the upper and lower half-bridges of the power devices to be respectively normally closed and normally open, that is, the first switch tube 201, the third switch tube 203 and the fifth switch tube 205 are normally closed, and the second switch tube 202, the fourth switch tube 204 and the sixth switch tube 206 are normally open;

[0097] At this time, the charging unit 500 upper and lower half-bridge and string into the charging inductance 403, and the three-phase winding of the motor, constitute a Buck circuit, the control unit 700 executes Buck voltage reduction charging control, that is, according to the target charging power, respectively control the first power device 401 and the second power device 402 of the upper and lower half-bridge alternating on and off, through adjusting the on-duty, realize the charging and discharging control of the power battery.

[0098] The embodiment of the application further provides a charging and electric drive control system control device, comprising:

[0099] The first response module is configured to, in response to the first working mode, control the second switch k2 to be closed and the first switch k1 to be disconnected, and control the motor inverter unit 200 to control the motor to operate in an SVPWM mode.

[0100] The first response module is further configured to control the second switch k2 to be closed and the first switch k1 to be disconnected, and control the motor inverter unit 200 to perform SVPWM control and drive the motor to operate normally.

[0101] The first response module is further configured to control the switching state of the switch group, so that the charging unit 500 is disconnected from the charging interface 600 and connected to the air conditioner compressor 400.

[0102] In some embodiments, the device further comprises a second response module configured to, in response to the second working mode, control the second switch k2 to be disconnected and the first switch k1 to be closed, and control the switching state of the switch group, so that the charging unit 500 is connected to the charging interface 600 and disconnected from the air conditioner compressor 400.

[0103] The power battery unit 100 is charged according to the voltage range of the power battery and the charging rectification voltage value.

[0104] The device can also perform each of the above-mentioned embodiments, which will not be repeated here.

[0105] The application further provides an electronic device, please see Figure 8 , Figure 8 A structural block diagram of an electronic device provided by the embodiment of the application. The electronic device can include a processor 81, a communication interface 82, a memory 83 and at least one communication bus 84. Among them, the communication bus 84 is used to realize the direct connection communication of these components. Among them, the communication interface 82 of the electronic device in the embodiment of the application is used to communicate with other node devices. The processor 81 can be an integrated circuit chip with signal processing capability.

[0106] The processor 81 can be a general processor, including a central processing unit (CPU), a network processor (NP), etc. The processor 81 can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor 81 can also be any conventional processor.

[0107] The memory 83 can be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), etc. The memory 83 stores computer readable instructions, which when executed by the processor 81, the electronic device can perform the steps involved in the above method embodiments.

[0108] Optionally, the electronic device can also include a storage controller, an input / output unit.

[0109] The memory 83, the storage controller, the processor 81, the peripheral interface, the input / output unit are directly or indirectly electrically connected to each other to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses 84. The processor 81 is used to execute the executable modules stored in the memory 83, such as software function modules or computer programs included in the electronic device.

[0110] The input / output unit is used to provide the user with creating tasks and creating optional time periods or preset execution times for the tasks to realize the interaction between the user and the server. The input / output unit can be, but is not limited to, a mouse and a keyboard, etc.

[0111] It can be understood that Figure 8 The structure shown is only schematic, and the electronic device can include more or fewer components than Figure 8 shown, or have a different configuration from Figure 8 shown. Figure 8The components shown in the figures can be implemented in hardware, software, or a combination thereof.

[0112] The embodiments of the present application also provide a computer readable storage medium, and the computer readable storage medium stores instructions. When the instructions are executed on a computer, the computer program is executed by a processor to implement the method of the method embodiments. To avoid repetition, details are not described here.

[0113] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented by other ways. The device embodiments described above are only schematic, for example, the flowcharts and block diagrams in the drawings show the possible implementation architectures, functions and operations of the devices, methods and computer program products according to the embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment or a part of code, which contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different orders from those described in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system for executing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0114] In addition, each functional module in the embodiments of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0115] If the functions are realized in the form of software function modules and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products, and the computer software products are stored in a storage medium, including a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0116] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0117] The above merely provides an example of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0118] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Claims

1. A charging and electric drive control system, characterized by, Comprising: a power battery unit, a motor inverter unit, a motor system, an air conditioner compressor, a charging unit, a first switch, a second switch, a switch group; the motor inverter unit and the charging unit are connected in parallel between the positive and negative poles of the power battery unit; the motor inverter unit and the motor system are connected, and the motor inverter unit is used to control the working state of the motor system; the charging unit is connected through the first switch and the neutral point of the motor system; the charging unit is connected through the second switch and the main negative common terminal of the motor inverter unit; the charging unit is connected through the switch group and the charging interface of the automobile, the air conditioner compressor, respectively; the charging unit comprises: a half-bridge circuit, an inductor, and a rectifier circuit; the half-bridge circuit and the rectifier circuit are connected in parallel between the positive and negative poles of the power battery unit; the midpoint of the half-bridge circuit is connected through the inductor, the first switch and the neutral point of the motor system; the first end of the half-bridge circuit is connected through the second switch and the main negative common terminal of the motor inverter unit.

2. The charging and electric drive control system of claim 1, wherein, The rectifier circuit comprises: a first rectifier branch and a second rectifier branch; the switch group comprises: a third switch and a fourth switch; the first rectifier branch is connected through the third switch and the charging interface of the automobile, the air conditioner compressor; the second rectifier branch is connected through the fourth switch and the charging interface of the automobile, the air conditioner compressor.

3. A control method of a charging and electric drive control system, characterized by, The method is applied to the charging and electric drive control system of any one of claims 1-2, comprising: in response to the first working mode, controlling the second switch to be closed and the first switch to be opened, and controlling the motor inverter unit to control the motor to operate in an SVPWM mode; controlling the switching state of the switch group to disconnect the charging unit from the charging interface and connect it to the air conditioner compressor.

4. The charging and electric drive control system control method of claim 3, wherein in response to the second working mode, controlling the second switch to be opened and the first switch to be closed, and controlling the switching state of the switch group to connect the charging unit to the charging interface and disconnect it from the air conditioner compressor; charging the power battery unit according to the power battery voltage range and the charging rectification voltage value.

5. The charging and electric drive control system control method according to claim 4, wherein The charging of the power battery unit according to the power battery voltage range and the charging rectification voltage value comprises: if the power battery voltage range is greater than the charging rectification voltage value, controlling the upper half-bridge power device of the half-bridge circuit to be always on and the lower half-bridge power device of the half-bridge circuit to be always off, and controlling the working state of the battery inverter unit to charge the power battery unit.

6. The charging and electric drive control system control method according to claim 5, wherein, The charging of the power battery unit according to the power battery voltage range and the charging rectification voltage value comprises: if the power battery voltage range is less than the charging rectification voltage value, controlling the motor inverter unit to execute the power device of the upper half-bridge power device to be always off and the power device of the lower half-bridge to be always on, and controlling the working state of the battery inverter unit to charge the power battery unit.

7. A charging and electric drive control system control device characterized by comprising: The method is applied to the charging and electric drive control system of any one of claims 1-2, comprising: The first response module is configured to, in response to the first working mode, control the second switch to be closed and the first switch to be opened, and control the motor inverter unit to control the motor to operate in an SVPWM mode. The first response module is further configured to control the second switch to be closed and the first switch to be opened, and control the motor inverter unit to perform SVPWM control and drive the motor to operate normally. The first response module is further configured to control the switching state of the switch group, so that the charging unit is disconnected from the charging interface and connected to the air conditioner compressor.

8. An electronic device, comprising: The computer readable storage medium stores instructions, and when the instructions are executed on the computer, the computer performs the steps of the method according to any one of claims 3-6. The computer readable storage medium stores instructions, and when the instructions are executed on the computer, the computer performs the steps of the method according to any one of claims 3-6.

9. A computer-readable storage medium, characterized in that, ​

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