Charging and discharging motor, charging and discharging motor control method and device

Abstract

The application relates to a charging and discharging motor, a charging and discharging motor control method and device. The charging and discharging motor control method is applied to the charging and discharging motor, the charging and discharging motor comprises a transformer, a first switch and a second switch; a first side of the transformer comprises a first winding and a second winding, and a second side of the transformer comprises a third winding; the charging and discharging motor control method comprises the following steps: in the case that a charging and discharging instruction for a target vehicle is received, the charging and discharging type of the charging and discharging instruction is determined; according to the charging and discharging type and the charging and discharging instruction, the control strategy of the charging and discharging motor of the target vehicle is determined. The method can realize accurate control of the charging and discharging motor and improve the charging and discharging efficiency.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle technology, and in particular to a charging and discharging motor, a charging and discharging motor control method and device. Background Technology

[0002] With the continuous development of new energy vehicles, more and more models are equipped with larger and larger power battery capacities. To enhance user experience, these vehicles are also equipped with external discharge functions, allowing users to park anytime, anywhere for activities like boiling water, cooking, and camping. They can also charge other vehicles for emergency rescue. However, most new energy vehicles use external discharge, requiring an external discharge gun. This limits the scenarios where the function cannot be used for camping or rescue in rainy or snowy weather. Therefore, another requirement has emerged for new energy vehicles: the need for in-vehicle discharge functionality.

[0003] Currently, there is no problem with independent discharge inside new energy vehicles. However, when discharging outside the vehicle, the discharge switch of the discharge socket inside the vehicle will fail because the charging and discharging motor shares the same discharge circuit for both external and internal discharge. This results in a single charging and discharging method, reduces charging and discharging efficiency, and fails to meet the diverse needs of users. Summary of the Invention

[0004] Therefore, it is necessary to provide a rechargeable and discharging motor, a rechargeable and discharging motor control method and device to address the above-mentioned technical problems, which can achieve precise control of the rechargeable and discharging motor and improve charging and discharging efficiency.

[0005] In a first aspect, this application provides a charging and discharging machine, including: a transformer, a first switch, and a second switch;

[0006] The first side of the transformer includes a first winding and a second winding, and the second side of the transformer includes a third winding;

[0007] The first winding is used to electrically connect to an external device via the first switch. When the first switch is closed, the first winding is electrically connected to the third winding.

[0008] The second winding is used to electrically connect with the vehicle-end electrical equipment through the second switch. When the second switch is closed, the third winding is used to supply power to the second winding so that the second winding supplies power to the vehicle-end electrical equipment.

[0009] The third winding is used to electrically connect to the vehicle-end power battery. When the first switch is closed, the third winding is used to charge or discharge the vehicle-end power battery according to the type of the external device.

[0010] In one embodiment, the charging and discharging motor further includes: an external AC circuit, a high-voltage DC circuit, and an internal discharge circuit.

[0011] The first winding is connected to the first switch via the external AC circuit;

[0012] The third winding is electrically connected to the vehicle-end power battery through the high-voltage DC circuit.

[0013] The second winding is connected to the second switch via the in-vehicle discharge circuit.

[0014] In one embodiment, the external AC circuit includes a power factor correction circuit and an inverter circuit;

[0015] One end of the power factor correction circuit is connected to the first switch, and the other end is connected to one end of the inverter circuit;

[0016] The other end of the inverter circuit is connected to the first winding.

[0017] Secondly, this application provides a method for controlling a charging and discharging motor, comprising:

[0018] Upon receiving a charging / discharging command for a target vehicle, determine the charging / discharging type of the command.

[0019] Based on the charging / discharging type and the charging / discharging command, a control strategy for the charging / discharging motor of the target vehicle is determined.

[0020] In one embodiment, the charging and discharging types include simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charging outside the vehicle while discharging inside the vehicle.

[0021] Accordingly, determining the control strategy for the charging and discharging motor of the target vehicle based on the charging and discharging type and the charging and discharging command includes:

[0022] If the charging and discharging type is simultaneous discharge inside and outside the vehicle, then according to the charging and discharging command, the first switch and the second switch in the charging and discharging motor are controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, and the first winding and the second winding are controlled to discharge.

[0023] If the charging / discharging type is external vehicle discharge, then according to the charging / discharging command, the first switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is controlled to discharge.

[0024] If the charging / discharging type is in-vehicle discharge, then according to the charging / discharging command, the second switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, and the second winding is controlled to discharge.

[0025] If the charging / discharging type is external charging and internal discharging, then according to the charging / discharging command, the first switch and the second switch are controlled to close, and the third winding is controlled to discharge to the vehicle-end power battery, and the first winding is controlled to charge, and the second winding is controlled to discharge; wherein, the input power of the first winding is greater than the output power of the second winding.

[0026] In one embodiment, if the charging / discharging type is external charging and internal discharging, the method further includes:

[0027] Obtain the first operating parameter information of the first winding and the second operating parameter information of the second winding in the charging and discharging motor;

[0028] The control strategy of the charging and discharging motor is adjusted based on the first operating parameter information and the second operating parameter information.

[0029] In one embodiment, adjusting the control strategy of the charging and discharging motor based on the first operating parameter information and the second operating parameter information includes:

[0030] If it is determined that the second winding is in an undervoltage state based on the second operating parameter information, then the relationship between the first input power of the first winding and the first output power of the second winding is determined based on the first operating parameter information and the second operating parameter information.

[0031] The control strategy for the charging and discharging motor is adjusted according to the aforementioned size relationship.

[0032] In one embodiment, adjusting the control strategy of the charging and discharging motor according to the size relationship includes:

[0033] If the magnitude relationship is such that the first input power is less than the first output power, then the third winding is controlled to stop charging the vehicle-end power battery, and the vehicle-end power battery is controlled to discharge through the third winding.

[0034] If the magnitude relationship is such that the first input power equals the first output power, then the third winding is controlled to stop charging the vehicle-end power battery.

[0035] Thirdly, this application also provides a charging and discharging motor control device, comprising:

[0036] The type determination module is used to determine the charging / discharging type of the charging / discharging command when a charging / discharging command for a target vehicle is received.

[0037] The strategy determination module is used to determine the control strategy of the charging and discharging motor of the target vehicle based on the charging and discharging type and the charging and discharging command.

[0038] Fourthly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0039] Upon receiving a charging / discharging command for a target vehicle, determine the charging / discharging type of the command.

[0040] Based on the charging / discharging type and the charging / discharging command, a control strategy for the charging / discharging motor of the target vehicle is determined.

[0041] Fifthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0042] Upon receiving a charging / discharging command for a target vehicle, determine the charging / discharging type of the command.

[0043] Based on the charging / discharging type and the charging / discharging command, a control strategy for the charging / discharging motor of the target vehicle is determined.

[0044] Sixthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0045] Upon receiving a charging / discharging command for a target vehicle, determine the charging / discharging type of the command.

[0046] Based on the charging / discharging type and the charging / discharging command, a control strategy for the charging / discharging motor of the target vehicle is determined.

[0047] The aforementioned charging / discharging motor, charging / discharging motor control method, and device, through a first switch and a second switch, electrically connect the first winding, the second winding, and the third winding via magnetic integration to form a charging / discharging motor. By adding a second winding, it enables simultaneous charging and discharging of the vehicle's power battery by external equipment and discharging of on-vehicle electrical equipment, improving charging and discharging efficiency. Simultaneously, the first and second switches allow for rapid protection of the vehicle interior in case of a problem. Furthermore, upon receiving a charging / discharging command for the target vehicle, the charging / discharging type of the command is determined, and precise control of the charging / discharging motor is achieved based on the charging / discharging type and the command, improving charging and discharging efficiency and enhancing the user experience. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a schematic diagram of the charging and discharging motor in one embodiment;

[0050] Figure 2 This is a schematic diagram of the charging and discharging motor in another embodiment;

[0051] Figure 3 This is a schematic diagram of the circuit structure of a charging and discharging motor in one embodiment;

[0052] Figure 4 This is a flowchart illustrating a charging and discharging motor control method in one embodiment;

[0053] Figure 5 This is a flowchart illustrating the process of adjusting the control strategy of the charging and discharging motor in one embodiment.

[0054] Figure 6 This is a flowchart illustrating the adjustment of the control strategy for the charging and discharging motor in another embodiment;

[0055] Figure 7 This is a flowchart illustrating the charging and discharging motor control method in another embodiment;

[0056] Figure 8 This is a structural block diagram of a charging and discharging motor control device in one embodiment;

[0057] Figure 9 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0059] The serial numbers assigned to components in this application, such as "first" and "second," are merely for distinguishing the described objects and have no sequential or technical meaning. Unless otherwise specified, the term "connection" in this application includes both direct and indirect connections. It should be understood that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are used only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0060] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In this application, the distinction between elements is not based on differences in name, but rather on differences in function.

[0061] In one embodiment, a rechargeable and discharging motor is provided, which can be applied to pure electric vehicles or plug-in hybrid vehicles. For example... Figure 1The diagram shown is a structural schematic of a charging and discharging motor provided in an embodiment of this application. The transformer 110 has a first winding 111 and a second winding 112 on its first side, and a third winding 113 on its second side. The first winding 111 is electrically connected to an external device 140 via a first switch 120. When the first switch is closed, the first winding and the third winding are electrically connected. The second winding 112 is electrically connected to a vehicle-side electrical device 150 via a second switch 130. When the second switch 130 is closed, the third winding 113 supplies power to the second winding 112, enabling the second winding 112 to supply power to the vehicle-side electrical device 150. The third winding 113 is electrically connected to a vehicle-side power battery 160. When the first switch 120 is closed, the third winding 113 charges or discharges the vehicle-side power battery 160 according to the type of the external device 140.

[0062] The aforementioned charging and discharging motor connects the first, second, and third windings via a first and second switch through magnetic integration, forming a charging and discharging motor. With the addition of a second winding, it enables the charging and discharging of the vehicle's power battery by external equipment while simultaneously discharging the vehicle's electrical equipment, thus improving charging and discharging efficiency. At the same time, the first and second switches enable rapid protection of the vehicle interior in the event of a problem with the target vehicle.

[0063] Optionally, based on the above embodiments, in one embodiment, such as Figure 2 The diagram shown is a structural schematic of a rechargeable and discharging motor provided in an embodiment of this application. The rechargeable and discharging motor further includes an external AC circuit 170, a high-voltage DC circuit 180, and an internal discharge circuit 190. Specifically, the first winding 111 is connected to the first switch 120 via the external AC circuit 170; the third winding 113 is electrically connected to the vehicle-side power battery 160 via the high-voltage DC circuit 190; and the second winding 112 is connected to the second switch 130 via the internal discharge circuit 190.

[0064] Optionally, the external AC circuit 170 includes a power factor correction circuit 171 and an inverter circuit 172. One end of the power factor correction circuit 171 is connected to the first switch 120, and the other end is connected to one end of the inverter circuit 172; the other end of the inverter circuit 172 is connected to the first winding 111.

[0065] Based on this, such as Figure 3The diagram shown is a schematic of the circuit structure of the charging and discharging motor provided in this embodiment of the application. The power factor correction circuit 171 consists of power switches S1-S6, inductors L1-L3, and bus capacitors C1-C2; the inverter circuit 172 consists of power switches S7-S9, resonant inductor L4, and resonant capacitor C3; the high-voltage DC circuit 180 consists of power switches S11-S14, resonant inductor L5, and resonant capacitor C4; the in-vehicle discharge circuit 190 consists of power switches S15-S22 and inductor L6. The first switch 120 consists of relays Q1-Q5; the second switch 130 consists of relays Q6-Q7. Among them, the live wires AC-L1, AC-L2, AC-L3, and AC-N are connected to the power factor correction circuit as AC terminals; the drain of power switch S15 is connected to the drain of power switch S19 and one end of the second winding; the source of power switch S15 is connected to the source of power switch S16; the drain of power switch S16 is connected to one end of the output inductor L6 and the drain of power switch S17; the source of power switch S17 is connected to the source of power switch S18; the drain of power switch S18 is connected to the drain of power switch S22 and the second winding. The other end of group n3 is connected; the source of power switch S19 is connected to the source of power switch S20, the drain of power switch S20 is connected to one end of relay Q7 of the second switch and the drain of power switch S21; the source of power switch S21 is connected to the source of power switch S22; the other end of output inductor L6 is connected to one end of relay Q6; the other end of relay Q6 of the second switch is connected to the AC-LCAR live wire of the vehicle discharge; the other end of relay Q7 is connected to the AC-NCAR neutral wire of the vehicle discharge; the first winding is n1 and the second winding is n2.

[0066] Optionally, based on the aforementioned charging and discharging motor, the charging and discharging electrode control method provided in this application embodiment can be applied to control the aforementioned charging and discharging motor. The charging and discharging motor control method provided in this application embodiment is executed by the motor controller in the target vehicle that controls the charging and discharging motor. In one embodiment, such as... Figure 4 As shown, a method for controlling a charging and discharging motor is provided. Taking the application of this method to a motor controller as an example, the method specifically includes the following steps:

[0067] S401, upon receiving a charge / discharge command for the target vehicle, determines the charge / discharge type of the command.

[0068] The charging and discharging command is used to instruct the motor controller to control the charging and discharging of the motor. In this embodiment, the charging and discharging command includes, but is not limited to, charging and discharging equipment and charging and discharging power. The charging and discharging types include, but are not limited to, simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charging outside the vehicle while discharging inside the vehicle.

[0069] Optionally, when the external charging port, external discharging port, and internal discharging port detect the insertion of a charging or discharging device, the corresponding controller inside the vehicle generates a charging or discharging command based on the inserted device and sends the charging or discharging command to the motor controller. Further, when the motor controller receives a charging or discharging command for the target vehicle, it determines the charging or discharging type based on the device type of the charging or discharging device included in the charging or discharging command for the target vehicle, as well as the charging port and / or discharging port of the inserted device.

[0070] S402 determines the control strategy for the charging and discharging motor of the target vehicle based on the charging and discharging type and charging and discharging command.

[0071] The control strategy includes the closing of the first and second switches, as well as the charging and discharging methods of the first, second, and third windings.

[0072] Optionally, based on the charging / discharging type and corresponding control rules, the first and second switches can be controlled to close; simultaneously, according to the charging / discharging command,

[0073] In the above-mentioned charging and discharging motor control method, upon receiving a charging and discharging command for the target vehicle, the charging and discharging type of the command is determined, and the charging and discharging motor is precisely controlled based on the charging and discharging type and the command, thereby improving charging and discharging efficiency and enhancing user experience.

[0074] Optionally, in this embodiment, the charging and discharging types include simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charging outside the vehicle while discharging inside the vehicle. Accordingly, different control strategies for the charging and discharging motors should be developed for different charging and discharging types to ensure that the charging and discharging motors charge and discharge as needed.

[0075] Optionally, if the charging / discharging type is simultaneous in-vehicle and out-of-vehicle discharge, then according to the charging / discharging command, the first and second switches in the charging / discharging motor are controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the first and second windings are controlled to discharge. Specifically, if the charging / discharging type is simultaneous in-vehicle and out-of-vehicle discharge, it indicates that the vehicle-side power battery of the target vehicle needs to charge external devices and vehicle-side electrical equipment; at this time, according to the charging / discharging command, the first and second switches in the charging / discharging motor are controlled to close, the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding to the first and second windings, and the first winding is controlled to output the power required by the external devices to the external devices, and the second winding is controlled to output the power required by the vehicle-side electrical equipment to the vehicle-side electrical equipment.

[0076] Furthermore, while charging external devices and vehicle-side electrical equipment, fault monitoring of the charging and discharging motor is required. Specifically, if an overcurrent fault is detected simultaneously in both the first and second windings, the fault is reported simultaneously for the first, second, and third windings. If an overcurrent fault is detected only in the first winding, the first winding is controlled to stop discharging and the fault is reported, while the second winding remains in a discharging state. If an overcurrent fault is detected in the second winding, the second winding is controlled to stop discharging and the fault is reported, while the first winding remains in a discharging state; simultaneously, the discharge of the second winding is attempted again every minute. If an overcurrent fault still occurs after three attempts, the discharge is stopped by default.

[0077] Optionally, if the charging / discharging type is external discharge, then according to the charging / discharging command, the first switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is also controlled to discharge. Specifically, if the charging / discharging type is external discharge, it means that the vehicle-side power battery of the target vehicle needs to charge external devices; at this time, according to the charging / discharging command, the first switch can be controlled to close, and the vehicle-side power battery in the target vehicle can be controlled to discharge through the third winding, and the first winding can be controlled to output the power required by the external devices.

[0078] Optionally, if the charging / discharging type is in-vehicle discharge, then according to the charging / discharging command, the second switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, and the second winding is controlled to discharge. Specifically, if the charging / discharging type is in-vehicle discharge, it means that the vehicle-side power battery of the target vehicle needs to charge the vehicle-side electrical equipment; at this time, according to the charging / discharging command, the second switch can be controlled to close, and the vehicle-side power battery in the target vehicle can be controlled to discharge through the third winding, and the second winding can be controlled to output the power required by the vehicle-side electrical equipment.

[0079] Optionally, if the charging / discharging type is external charging and internal discharging, then according to the charging / discharging command, the first and second switches are controlled to close, and the third winding is controlled to discharge to the vehicle-end power battery, as well as the first winding is controlled to charge and the second winding is controlled to discharge; wherein, the input power of the first winding is greater than the output power of the second winding. Specifically, if the charging / discharging type is external charging and internal discharging, it means that external equipment needs to charge the target vehicle's vehicle-end power battery and also needs to charge the vehicle-end electrical equipment; in this case, according to the charging / discharging command, the first and second switches are controlled to close, and the third winding is controlled to discharge to the vehicle-end power battery, as well as the external equipment is controlled to charge the first winding and the second winding is controlled to discharge to the vehicle-end electrical equipment.

[0080] It should be noted that since the external device charges both the vehicle-side power battery and the vehicle-side electrical equipment simultaneously through the first winding, it is necessary to ensure that the power output from the second winding to the vehicle-side electrical equipment is less than the input power from the external device to the first winding.

[0081] Furthermore, in the case of charging outside the vehicle and discharging inside the vehicle, if the power demand of the vehicle-side electrical equipment exceeds the input power supplied to the first winding by the external equipment, the output of the second winding will be pulled to undervoltage due to overload. Therefore, in this case, the control strategy of the charging and discharging motor needs to be adjusted. Thus, in one embodiment, as... Figure 5 As shown, a method for adjusting the control strategy of a charging and discharging motor is provided, which specifically includes the following steps:

[0082] S501, obtain the first operating parameter information of the first winding and the second operating parameter information of the second winding in the charging and discharging motor.

[0083] The first operating parameter information includes, but is not limited to, the input power and voltage of the first winding; the second operating parameter information includes, but is not limited to, the output power and voltage of the second winding.

[0084] Optionally, the operation of the first winding and the second winding in the charging and discharging motor can be monitored to obtain the first operating parameter information of the first winding and the second operating parameter information of the second winding.

[0085] S502, adjust the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information.

[0086] Optionally, based on the first and second operating parameter information, it can be determined whether the input power of the first winding and the output power of the second winding have changed, and whether a fault has occurred in the first and second windings. If the input power of the first winding and the output power of the second winding have changed and / or a fault has occurred in the first and second windings, the control strategy of the charging and discharging motor needs to be adjusted according to the actual situation.

[0087] In this embodiment, by monitoring the first and second windings in the charging and discharging motor and based on the first and second operating parameter information, charging and discharging failures caused by faults are avoided, thereby improving the charging and discharging efficiency of the charging and discharging motor.

[0088] Optionally, based on the above embodiments, in one embodiment, such as Figure 6 As shown, a method for adjusting the control strategy of a charging and discharging motor is provided, which specifically includes the following steps:

[0089] S601, if it is determined that the second winding is in an undervoltage state according to the second operating parameter information, then the relationship between the first input power of the first winding and the first output power of the second winding is determined according to the first operating parameter information and the second operating parameter information.

[0090] Optionally, if the second winding is determined to be undervoltage based on the second operating parameter information, it indicates that the second winding has a fault and the fault needs to be dealt with in a timely manner.

[0091] Specifically, the relationship between the first input power of the first winding and the first output power of the second winding is determined based on the magnitude of the first input power of the first winding contained in the first operating parameter information and the magnitude of the second output power of the second winding contained in the second operating parameter information.

[0092] S602 adjusts the control strategy of the charging and discharging motor according to the size relationship.

[0093] Optionally, the relationship between the first input power of the first winding and the first output power of the second winding may be different, and the corresponding adjustment methods for the control strategy of the charging and discharging motor may also be different.

[0094] Specifically, if the first input power of the first winding is less than the first output power of the second winding, it indicates that the input power of the first winding is insufficient to simultaneously discharge the vehicle-side power battery and the vehicle-side electrical equipment. In this case, it is necessary to control the third winding to stop charging the vehicle-side power battery and control the vehicle-side power battery to discharge through the third winding. That is, both external equipment and the vehicle-side power battery need to charge the vehicle-side electrical equipment simultaneously.

[0095] Furthermore, after adjusting the control strategy, fault monitoring of the charging and discharging motor is also required. Specifically, if an overcurrent fault is detected in the second winding, the second winding is controlled to block the waveform and report the fault. External devices charge the vehicle-side power battery through the first and third windings. At the same time, every 1 minute, the second winding is attempted to discharge to the vehicle-side electrical equipment again. If an overcurrent fault still occurs after 3 attempts, the discharge of the second winding is stopped by default.

[0096] Optionally, if the first input power of the first winding and the first output power of the second winding are equal in magnitude, it means that the input power of the first winding can just charge the vehicle-side electrical equipment connected to the third winding; in this case, it is necessary to control the third winding to stop charging the vehicle-side power battery.

[0097] Furthermore, fault monitoring of the charging and discharging motor is also required. Specifically, if an overcurrent fault is detected in the second winding, the second winding is controlled to block the waveform and report the fault. External devices charge the vehicle-side power battery through the first and third windings. At the same time, every 1 minute, the second winding is attempted to discharge to the vehicle-side electrical equipment again. If an overcurrent fault still occurs after 3 attempts, the discharge of the second winding is stopped by default.

[0098] In this embodiment, when the second winding is in an undervoltage state, the control strategy of the charging and discharging motor is adjusted according to the relationship between the first input power of the first winding and the first output power of the second winding, so as to ensure that the charging and discharging motor can efficiently complete the charging and discharging process.

[0099] Figure 7 This is a flowchart illustrating a charging and discharging motor control method in another embodiment. Based on the above embodiments, this embodiment provides an optional example of a charging and discharging motor control method. (Combined with...) Figure 7 The specific implementation process is as follows:

[0100] S701, upon receiving a charge / discharge command for a target vehicle, determines the charge / discharge type of the command.

[0101] Among them, the charging and discharging types include simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charging outside the vehicle while discharging inside the vehicle.

[0102] S702, determine whether the charging / discharging type is simultaneous discharge inside and outside the vehicle; if yes, proceed to S703; if no, proceed to S704.

[0103] S703, according to the charging and discharging command, controls the first and second switches in the charging and discharging motor to close, controls the vehicle-side power battery in the target vehicle to discharge through the third winding, and controls the first and second windings to discharge.

[0104] S704, determine whether the charging / discharging type is external discharge; if yes, proceed to S705; if no, proceed to S706.

[0105] S705, according to the charge and discharge command, controls the first switch to close, controls the vehicle-side power battery in the target vehicle to discharge through the third winding, and controls the first winding to discharge.

[0106] S706, determine whether the charging / discharging type is in-vehicle discharge; if yes, proceed to S707; if no, proceed to S708.

[0107] S707 controls the second switch to close according to the charging and discharging command, and controls the vehicle-side power battery in the target vehicle to discharge through the third winding, and controls the second winding to discharge.

[0108] S708 controls the first and second switches to close according to the charging and discharging commands, controls the third winding to discharge to the vehicle-end power battery, controls the first winding to charge, and controls the second winding to discharge.

[0109] The input power of the first winding is greater than the output power of the second winding.

[0110] S709, obtain the first operating parameter information of the first winding and the second operating parameter information of the second winding in the charging and discharging motor.

[0111] S710, if it is determined that the second winding is in an undervoltage state according to the second operating parameter information, then the relationship between the first input power of the first winding and the first output power of the second winding is determined according to the first operating parameter information and the second operating parameter information.

[0112] S711 adjusts the control strategy of the charging and discharging motor according to the size relationship.

[0113] Optionally, if the first input power is less than the first output power, the third winding is controlled to stop charging the vehicle-end power battery, and the vehicle-end power battery is controlled to discharge through the third winding; if the first input power is equal to the first output power, the third winding is controlled to stop charging the vehicle-end power battery.

[0114] The specific processes of S701-S711 described above can be found in the description of the above method embodiments. Their implementation principles and technical effects are similar, and will not be repeated here.

[0115] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0116] Based on the same inventive concept, this application also provides a charging / discharging motor control device for implementing the charging / discharging motor control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the charging / discharging motor control device provided below can be found in the limitations of the charging / discharging motor control method described above, and will not be repeated here.

[0117] In one embodiment, such as Figure 8 As shown, a charging and discharging motor control device 80 is provided, including: a type determination module 10 and a strategy determination module 20, wherein:

[0118] The type determination module 10 is used to determine the charging and discharging type of the charging and discharging command when a charging and discharging command for the target vehicle is received.

[0119] The strategy determination module 20 is used to determine the control strategy of the charging and discharging motor of the target vehicle based on the charging and discharging type and charging and discharging command.

[0120] The aforementioned charging and discharging motor control device, upon receiving a charging and discharging command for a target vehicle, determines the charging and discharging type of the command and, based on the charging and discharging type and the command, achieves precise control of the charging and discharging motor, thereby improving charging and discharging efficiency and enhancing the user experience.

[0121] In one embodiment, the charging / discharging types include simultaneous in-vehicle and out-of-vehicle discharge, in-vehicle discharge, out-of-vehicle discharge, and out-of-vehicle charging with in-vehicle discharge; the strategy determination module 20 includes:

[0122] The first determining unit is used to control the first and second switches in the charging and discharging motor to close according to the charging and discharging command if the charging and discharging type is simultaneous discharge inside and outside the vehicle, and to control the vehicle-side power battery in the target vehicle to discharge through the third winding, and to control the first and second windings to discharge.

[0123] The second determining unit is used to control the first switch to close and control the vehicle-side power battery in the target vehicle to discharge through the third winding, and control the first winding to discharge, if the charging / discharging type is external discharge, according to the charging / discharging command.

[0124] The third determining unit is used to control the second switch to close according to the charging and discharging command if the charging and discharging type is in-vehicle discharge, and to control the vehicle-side power battery in the target vehicle to discharge through the third winding, and to control the second winding to discharge.

[0125] The fourth determining unit is used to control the first switch and the second switch to close, and control the third winding to discharge to the vehicle-end power battery, and control the first winding to charge and the second winding to discharge, according to the charging and discharging command, if the charging and discharging type is external charging and internal discharging; wherein, the input power of the first winding is greater than the output power of the second winding.

[0126] In one embodiment, the fourth determining unit includes:

[0127] The acquisition unit is used to acquire the first operating parameter information of the first winding and the second operating parameter information of the second winding in the charging and discharging motor.

[0128] The control slave unit is used to adjust the control strategy of the charging and discharging motor based on the first operating parameter information and the second operating parameter information.

[0129] In one embodiment, control from the unit is specifically used for:

[0130] If the second winding is determined to be in an undervoltage state based on the second operating parameter information, then the relationship between the first input power of the first winding and the first output power of the second winding is determined based on the first and second operating parameter information; and the control strategy of the charging and discharging motor is adjusted according to the relationship.

[0131] In one embodiment, the control slave unit is also used for:

[0132] If the first input power is less than the first output power, the third winding is controlled to stop charging the vehicle-end power battery, and the vehicle-end power battery is controlled to discharge through the third winding; if the first input power is equal to the first output power, the third winding is controlled to stop charging the vehicle-end power battery.

[0133] Each module in the aforementioned charging and discharging motor control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0134] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 9As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media to run. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements a charging and discharging motor control method.

[0135] Those skilled in the art will understand that Figure 9 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0136] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0137] Upon receiving a charging / discharging command for the target vehicle, determine the charging / discharging type of the command.

[0138] Based on the charging / discharging type and charging / discharging command, determine the control strategy for the charging / discharging motor of the target vehicle.

[0139] In one embodiment, the charging and discharging types include simultaneous in-vehicle and out-of-vehicle discharge, in-vehicle discharge, out-of-vehicle discharge, and out-of-vehicle charging with in-vehicle discharge; when the processor executes the computer program to determine the control strategy for the charging and discharging motor of the target vehicle based on the charging and discharging type and charging and discharging instructions, it also implements the following steps:

[0140] If the charging / discharging type is simultaneous discharge inside and outside the vehicle, then according to the charging / discharging command, the first and second switches in the charging / discharging motor are controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the first and second windings are controlled to discharge; if the charging / discharging type is discharge outside the vehicle, then according to the charging / discharging command, the first switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the first winding is controlled to discharge; if the charging / discharging type is discharge inside the vehicle, then according to the charging / discharging command, the second switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the second winding is controlled to discharge; if the charging / discharging type is charging outside the vehicle and discharging inside the vehicle, then according to the charging / discharging command, the first and second switches are controlled to close, and the third winding is controlled to discharge to the vehicle-side power battery, as well as the first winding is controlled to charge, and the second winding is controlled to discharge; wherein, the input power of the first winding is greater than the output power of the second winding.

[0141] In one embodiment, if the charging / discharging type is external charging and internal discharging, the processor also performs the following steps when executing the computer program:

[0142] Obtain the first operating parameter information of the first winding and the second operating parameter information of the second winding in the charging and discharging motor; adjust the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information.

[0143] In one embodiment, when the processor executes a computer program to adjust the control strategy of the charging and discharging motor based on the first operating parameter information and the second operating parameter information, it also performs the following steps:

[0144] If the second winding is determined to be in an undervoltage state based on the second operating parameter information, then the relationship between the first input power of the first winding and the first output power of the second winding is determined based on the first and second operating parameter information; and the control strategy of the charging and discharging motor is adjusted according to the relationship.

[0145] In one embodiment, when the processor executes a computer program to adjust the control strategy of the charging and discharging motor according to the size relationship, it also performs the following steps:

[0146] If the first input power is less than the first output power, the third winding is controlled to stop charging the vehicle-end power battery, and the vehicle-end power battery is controlled to discharge through the third winding; if the first input power is equal to the first output power, the third winding is controlled to stop charging the vehicle-end power battery.

[0147] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0148] Upon receiving a charging / discharging command for the target vehicle, determine the charging / discharging type of the command.

[0149] Based on the charging / discharging type and charging / discharging command, determine the control strategy for the charging / discharging motor of the target vehicle.

[0150] In one embodiment, the charging and discharging types include simultaneous in-vehicle and out-of-vehicle discharge, in-vehicle discharge, out-of-vehicle discharge, and out-of-vehicle charging with in-vehicle discharge; when the processor executes the computer program to determine the control strategy for the charging and discharging motor of the target vehicle based on the charging and discharging type and charging and discharging instructions, it also implements the following steps:

[0151] If the charging / discharging type is simultaneous discharge inside and outside the vehicle, then according to the charging / discharging command, the first and second switches in the charging / discharging motor are controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the first and second windings are controlled to discharge; if the charging / discharging type is discharge outside the vehicle, then according to the charging / discharging command, the first switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the first winding is controlled to discharge; if the charging / discharging type is discharge inside the vehicle, then according to the charging / discharging command, the second switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the second winding is controlled to discharge; if the charging / discharging type is charging outside the vehicle and discharging inside the vehicle, then according to the charging / discharging command, the first and second switches are controlled to close, and the third winding is controlled to discharge to the vehicle-side power battery, as well as the first winding is controlled to charge, and the second winding is controlled to discharge; wherein, the input power of the first winding is greater than the output power of the second winding.

[0152] In one embodiment, if the charging / discharging type is external charging and internal discharging, the processor also performs the following steps when executing the computer program:

[0153] Obtain the first operating parameter information of the first winding and the second operating parameter information of the second winding in the charging and discharging motor; adjust the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information.

[0154] In one embodiment, when the processor executes a computer program to adjust the control strategy of the charging and discharging motor based on the first operating parameter information and the second operating parameter information, it also performs the following steps:

[0155] If the second winding is determined to be in an undervoltage state based on the second operating parameter information, then the relationship between the first input power of the first winding and the first output power of the second winding is determined based on the first and second operating parameter information; and the control strategy of the charging and discharging motor is adjusted according to the relationship.

[0156] In one embodiment, when the processor executes a computer program to adjust the control strategy of the charging and discharging motor according to the size relationship, it also performs the following steps:

[0157] If the first input power is less than the first output power, the third winding is controlled to stop charging the vehicle-end power battery, and the vehicle-end power battery is controlled to discharge through the third winding; if the first input power is equal to the first output power, the third winding is controlled to stop charging the vehicle-end power battery.

[0158] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0159] Upon receiving a charging / discharging command for the target vehicle, determine the charging / discharging type of the command.

[0160] Based on the charging / discharging type and charging / discharging command, determine the control strategy for the charging / discharging motor of the target vehicle.

[0161] In one embodiment, the charging and discharging types include simultaneous in-vehicle and out-of-vehicle discharge, in-vehicle discharge, out-of-vehicle discharge, and out-of-vehicle charging with in-vehicle discharge; when the processor executes the computer program to determine the control strategy for the charging and discharging motor of the target vehicle based on the charging and discharging type and charging and discharging instructions, it also implements the following steps:

[0162] If the charging / discharging type is simultaneous discharge inside and outside the vehicle, then according to the charging / discharging command, the first and second switches in the charging / discharging motor are controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the first and second windings are controlled to discharge; if the charging / discharging type is discharge outside the vehicle, then according to the charging / discharging command, the first switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the first winding is controlled to discharge; if the charging / discharging type is discharge inside the vehicle, then according to the charging / discharging command, the second switch is controlled to close, and the vehicle-side power battery in the target vehicle is controlled to discharge through the third winding, as well as the second winding is controlled to discharge; if the charging / discharging type is charging outside the vehicle and discharging inside the vehicle, then according to the charging / discharging command, the first and second switches are controlled to close, and the third winding is controlled to discharge to the vehicle-side power battery, as well as the first winding is controlled to charge, and the second winding is controlled to discharge; wherein, the input power of the first winding is greater than the output power of the second winding.

[0163] In one embodiment, if the charging / discharging type is external charging and internal discharging, the processor also performs the following steps when executing the computer program:

[0164] Obtain the first operating parameter information of the first winding and the second operating parameter information of the second winding in the charging and discharging motor; adjust the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information.

[0165] In one embodiment, when the processor executes a computer program to adjust the control strategy of the charging and discharging motor based on the first operating parameter information and the second operating parameter information, it also performs the following steps:

[0166] If the second winding is determined to be in an undervoltage state based on the second operating parameter information, then the relationship between the first input power of the first winding and the first output power of the second winding is determined based on the first and second operating parameter information; and the control strategy of the charging and discharging motor is adjusted according to the relationship.

[0167] In one embodiment, when the processor executes a computer program to adjust the control strategy of the charging and discharging motor according to the size relationship, it also performs the following steps:

[0168] If the first input power is less than the first output power, the third winding is controlled to stop charging the vehicle-end power battery, and the vehicle-end power battery is controlled to discharge through the third winding; if the first input power is equal to the first output power, the third winding is controlled to stop charging the vehicle-end power battery.

[0169] It should be noted that the data involved in this application (including but not limited to data used for analysis, data stored, data displayed, etc.) are all information and data that have been fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0170] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0171] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0172] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A charge-discharge motor control method characterized by, The method comprises the following steps: In the case of receiving a charge-discharge instruction for a target vehicle, determining the charge-discharge type of the charge-discharge instruction; the charge-discharge type includes simultaneous discharge of the vehicle and the outside, discharge of the vehicle, discharge of the outside, and charge of the outside and discharge of the vehicle; According to the charge-discharge type and the charge-discharge instruction, determining the control strategy of the charge-discharge motor of the target vehicle; Wherein, the charge-discharge motor comprises a transformer, a first switch and a second switch; The first side of the transformer comprises a first winding and a second winding, and the second side of the transformer comprises a third winding; the first winding is used to be electrically connected with an external device through the first switch, and the first winding is electrically connected with the third winding when the first switch is closed; the second winding is used to be electrically connected with a vehicle-end electrical device through the second switch, and the third winding is used to supply power to the second winding to make the second winding supply power to the vehicle-end electrical device when the second switch is closed; the third winding is used to be electrically connected with a vehicle-end power battery, and the third winding is used to charge or discharge the vehicle-end power battery according to the type of the external device when the first switch is closed; The charge-discharge motor further comprises an external AC circuit, a high-voltage DC circuit and an internal discharge circuit; the first winding is connected with the first switch through the external AC circuit; the third winding is electrically connected with the vehicle-end power battery through the high-voltage DC circuit; the second winding is connected with the second switch through the internal discharge circuit; The external AC circuit comprises a power factor correction circuit and an inverter circuit; one end of the power factor correction circuit is connected with the first switch, and the other end is connected with one end of the inverter circuit; the other end of the inverter circuit is connected with the first winding; If the charge-discharge type is charge of the outside and discharge of the vehicle, the method further comprises: Obtaining first working parameter information of the first winding and second working parameter information of the second winding in the charge-discharge motor; If it is determined that the second winding is in an under-voltage state according to the second working parameter information, determining the size relationship between the first input power of the first winding and the first output power of the second winding according to the first working parameter information and the second working parameter information; If the size relationship is that the first input power is less than the first output power, controlling the third winding to stop charging the vehicle-end power battery, and controlling the vehicle-end power battery to discharge through the third winding; If the size relationship is that the first input power is equal to the first output power, controlling the third winding to stop charging the vehicle-end power battery.

2. The method of claim 1, wherein, The method comprises the following steps: If the charge-discharge type is simultaneous discharge of the vehicle and the outside, controlling the first switch and the second switch in the charge-discharge motor to be closed according to the charge-discharge instruction, and controlling the vehicle-end power battery in the target vehicle to discharge through the third winding, and controlling the first winding and the second winding to discharge. If the charging and discharging type is off-board discharging, according to the charging and discharging instruction, the first switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to be discharged through the third winding and the first winding is controlled to be discharged; If the charging and discharging type is on-board discharging, according to the charging and discharging instruction, the second switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to be discharged through the third winding and the second winding is controlled to be discharged; If the charging and discharging type is off-board charging and on-board discharging, according to the charging and discharging instruction, the first switch and the second switch are controlled to be closed, and the third winding is controlled to discharge to the vehicle-end power battery, and the first winding is controlled to be charged and the second winding is controlled to be discharged; wherein the input power of the first winding is greater than the output power of the second winding.

3. A charge-discharge motor control device characterized by comprising: The device comprises: a type determination module configured to determine a charging and discharging type of a charging and discharging instruction for a target vehicle when the charging and discharging instruction is received; the charging and discharging type comprises on-board and off-board simultaneous discharging, on-board discharging, off-board discharging, and off-board charging and on-board discharging; a strategy determination module configured to determine a control strategy of a charging and discharging motor of the target vehicle according to the charging and discharging type and the charging and discharging instruction; If the charging and discharging type is off-board charging and on-board discharging, the strategy determination module is further configured to: obtain first working parameter information of a first winding and second working parameter information of a second winding in the charging and discharging motor; if it is determined that the second winding is in an under-voltage state according to the second working parameter information, determine a size relationship between a first input power of the first winding and a first output power of the second winding according to the first working parameter information and the second working parameter information; if the size relationship is that the first input power is less than the first output power, control the third winding to stop charging the vehicle-end power battery, and control the vehicle-end power battery to be discharged through the third winding; if the size relationship is that the first input power is equal to the first output power, control the third winding to stop charging the vehicle-end power battery; The charging and discharging motor comprises a transformer, a first switch, and a second switch; The first side of the transformer comprises a first winding and a second winding, and the second side of the transformer comprises a third winding; the first winding is configured to be electrically connected with an external device through the first switch, and the first winding is configured to be electrically connected with the third winding when the first switch is closed; the second winding is configured to be electrically connected with a vehicle-end electrical device through the second switch, and the third winding is configured to supply power to the second winding to enable the second winding to supply power to the vehicle-end electrical device when the second switch is closed; the third winding is configured to be electrically connected with a vehicle-end power battery, and the third winding is configured to charge or discharge the vehicle-end power battery according to a type of the external device when the first switch is closed; The charging and discharging motor further comprises an off-vehicle alternating current circuit, a high-voltage direct current circuit and an in-vehicle discharging circuit; the first winding is connected with the first switch through the off-vehicle alternating current circuit; the third winding is electrically connected with a vehicle terminal power battery through the high-voltage direct current circuit; the second winding is connected with the second switch through the in-vehicle discharging circuit. The off-vehicle alternating current circuit comprises a power factor correction circuit and an inverter circuit; one end of the power factor correction circuit is connected with the first switch, and the other end is connected with one end of the inverter circuit; the other end of the inverter circuit is connected with the first winding.

4. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor, when executing the computer program, implements the steps of the method in any one of claims 1 to 2.

Images