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

Abstract

The invention relates to a charging and discharging motor and a charging and discharging motor control method and device. The charging and discharging motor control method is applied to a charging and discharging motor, and 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 charging and discharging motor control method comprises the steps that under the condition 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; and determining 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. By adopting the method, accurate control on the charging and discharging motor can be realized, and the charging and discharging efficiency is improved.

Description

Technical Field

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

[0002] With the continuous development of new energy vehicles, more and more models are equipped with larger and larger power battery capacity. The vehicle end is also equipped with an external discharge function for user experience, which allows users to stop at any time to boil water, cook, and camp. At the same time, it can also charge external vehicles for emergency rescue. Most new energy models use external discharge, which requires an external discharge gun to achieve external discharge. The discharge scene is limited. When it rains or snows, this function cannot be used to achieve camping and rescue functions. Therefore, another demand is put forward for new energy vehicles, which is the need to realize the in-vehicle discharge function.

[0003] At present, there is no problem with independent discharge inside the new energy vehicle. When discharging outside the vehicle, since the charging and discharging motors share the same discharge circuit for discharge outside the vehicle and discharge inside the vehicle, the discharge switch of the discharge socket inside the vehicle will fail, resulting in a single charging and discharging method, which reduces the charging and discharging efficiency and cannot meet the user's multi-faceted needs. Summary of the invention

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

[0005] In a first aspect, the present 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 be electrically connected to an external device through the first switch, and when the first switch is closed, the first winding is electrically connected to the third winding;

[0008] The second winding is used to be electrically connected to the vehicle-end electrical equipment through the second switch, and 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 be electrically connected 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 of the embodiments, the charging and discharging motor further comprises: an external AC circuit, a high-voltage DC circuit and an internal discharge circuit;

[0011] The first winding is connected to the first switch through the off-vehicle 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 through the in-vehicle discharge circuit.

[0014] In one of the embodiments, the off-vehicle 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] In a second aspect, the present application provides a charging and discharging motor control method, comprising:

[0018] In case of receiving a charge and discharge instruction for a target vehicle, determining a charge and discharge type of the charge and discharge instruction;

[0019] A control strategy for a charging and discharging motor of the target vehicle is determined according to the charging and discharging type and the charging and discharging instruction.

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

[0021] Correspondingly, the control strategy of the charging and discharging motor of the target vehicle is determined according to the charging and discharging type and the charging and discharging instruction, including:

[0022] If the charge and discharge type is simultaneous discharge inside and outside the vehicle, then according to the charge and discharge instruction, the first switch and the second switch in the charge and discharge motor are controlled to be closed, and the vehicle-end 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 charge and discharge type is off-vehicle discharge, then according to the charge and discharge instruction, the first switch is controlled to be closed, and the vehicle-end 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 charge and discharge type is in-vehicle discharge, then according to the charge and discharge instruction, the second switch is controlled to be closed, and the vehicle-end 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 charge and discharge type is charging outside the vehicle and discharging inside the vehicle, then according to the charge and discharge instructions, 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 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 and discharging type is external charging and internal discharging, the method further includes:

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

[0028] According to the first operating parameter information and the second operating parameter information, a control strategy of the charging and discharging motor is adjusted.

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

[0030] If it is determined according to the second operating parameter information that the second winding is in an undervoltage state, then determining a magnitude relationship between a first input power of the first winding and a first output power of the second winding according to the first operating parameter information and the second operating parameter information;

[0031] According to the size relationship, the control strategy of the charging and discharging motor is adjusted.

[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 that 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;

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

[0035] In a third aspect, the present application further provides a charging and discharging motor control device, comprising:

[0036] A type determination module, configured to determine the charge and discharge type of the charge and discharge instruction upon receiving the charge and discharge instruction for the target vehicle;

[0037] A strategy determination module is used to determine the control strategy of the charging and discharging motor of the target vehicle according to the charging and discharging type and the charging and discharging instruction.

[0038] In a fourth aspect, the present application further provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0039] In case of receiving a charge and discharge instruction for a target vehicle, determining a charge and discharge type of the charge and discharge instruction;

[0040] A control strategy for a charging and discharging motor of the target vehicle is determined according to the charging and discharging type and the charging and discharging instruction.

[0041] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0042] In case of receiving a charge and discharge instruction for a target vehicle, determining a charge and discharge type of the charge and discharge instruction;

[0043] A control strategy for a charging and discharging motor of the target vehicle is determined according to the charging and discharging type and the charging and discharging instruction.

[0044] In a sixth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0045] In case of receiving a charge and discharge instruction for a target vehicle, determining a charge and discharge type of the charge and discharge instruction;

[0046] A control strategy for a charging and discharging motor of the target vehicle is determined according to the charging and discharging type and the charging and discharging instruction.

[0047] The above-mentioned charging and discharging motor, charging and discharging motor control method and device, through the first switch and the second switch, electrically connect the first winding, the second winding and the third winding by magnetic integration to form a charging and discharging motor, and in the case of adding the second winding, it is realized that while the external device charges and discharges the vehicle section power battery, it can also discharge the vehicle-side electrical equipment, thereby improving the charging and discharging efficiency; at the same time, through the first switch and the second switch, rapid protection inside the vehicle can be achieved when a problem occurs in the target vehicle. Furthermore, when a charging and discharging instruction for the target vehicle is received, the charging and discharging type of the charging and discharging instruction is determined, and according to the charging and discharging type and the charging and discharging instruction, precise control of the charging and discharging motor is achieved, thereby improving the charging and discharging efficiency and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

[0052] Figure 4 1 is a flow chart of a charging and discharging motor control method in one embodiment;

[0053] Figure 5 A schematic diagram of a flow chart of adjusting a control strategy for a charging and discharging motor in one embodiment;

[0054] Figure 6 A schematic diagram of a flow chart of adjusting a control strategy for a charging and discharging motor in another embodiment;

[0055] Figure 7 is a flow chart of a charging and discharging motor control method in another embodiment;

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

[0057] FIG. 9 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0059] The serial numbers assigned to the components in this application, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. Unless otherwise specified, the "connection" mentioned in this application includes direct and indirect connections. In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0060] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. In the present application, differences in names are not used as a way to distinguish components, but differences in functions of components are used as the principle of distinction.

[0061] In one embodiment, a charging and discharging motor is provided, which can be applied to a pure electric vehicle or a plug-in hybrid vehicle. Figure 1 As shown, it is a schematic diagram of the structure of the charging and discharging motor provided by the embodiment of the present application. Among them, the first side of the transformer 110 includes a first winding 111 and a second winding 112, and the second side of the transformer 110 includes a third winding 113; the first winding 111 is used to be electrically connected to the external device 140 through the first switch 120, and when the first switch is closed, the first winding and the third winding are electrically connected; the second winding 112 is used to be electrically connected to the vehicle-end electrical device 150 through the second switch 130, and when the second switch 130 is closed, the third winding 113 is used to supply power to the second winding 112, so that the second winding 112 supplies power to the vehicle-end electrical device 150; the third winding 113 is used to be electrically connected to the vehicle-end power battery 160, and when the first switch 120 is closed, the third winding 113 is used to charge or discharge the vehicle-end power battery 160 according to the type of the external device 140.

[0062] The above-mentioned charging and discharging motor electrically connects the first winding, the second winding and the third winding by magnetic integration through the first switch and the second switch to form a charging and discharging motor. In addition, when the second winding is added, it is possible to discharge the vehicle-end electrical equipment while the external equipment charges and discharges the vehicle-end power battery, thereby improving the charging and discharging efficiency. At the same time, through the first switch and the second switch, rapid protection of the vehicle can be achieved when a problem occurs in the target vehicle.

[0063] Optionally, based on the above embodiment, in one embodiment, as Figure 2 As shown, it is a schematic diagram of the structure of the charging and discharging motor provided in an embodiment of the present application. Among them, the charging and discharging motor also includes an external AC circuit 170, a high-voltage DC circuit 180 and an internal discharge circuit 190. Among them, the first winding 111 is connected to the first switch 120 through the external AC circuit 170; the third winding 113 is electrically connected to the vehicle-end power battery 160 through the high-voltage DC circuit 190; the second winding 112 is connected to the second switch 130 through the internal discharge circuit 190.

[0064] Optionally, the off-vehicle 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] On this basis, if Figure 3As shown, it is a schematic diagram of the circuit structure of the charging and discharging motor provided in the embodiment of the present application. The power factor correction circuit 171 is composed of power switch tubes S1~S6, inductors L1~L3, and bus capacitors C1~C2; the inverter circuit 172 is composed of power switch tubes S7~S9, resonant inductor L4, and resonant capacitor C3; the high-voltage DC circuit 180 is composed of power switch tubes S11~S14, resonant inductor L5, and resonant capacitor C4; the in-vehicle discharge circuit 190 is composed of power switch tubes S15~S22 and inductor L6. The first switch 120 is composed of relays Q1~Q5; the second switch 130 is composed 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 ends; the drain of the power switch tube S15 is connected to the drain of the power switch tube S19 and one end of the second winding; the source of the power switch tube S15 is connected to the source of the power switch tube S16; the drain of the power switch tube S16 is connected to one end of the output inductor L6 and the drain of the power switch tube S17; the source of the power switch tube S17 is connected to the source of the power switch tube S18; the drain of the power switch tube S18 is connected to the drain of the power switch tube S22 and the second winding. The other end of group n3 is connected; the source of the power switch tube S19 is connected to the source of the power switch tube S20, and the drain of the power switch tube S20 is connected to one end of the relay Q7 of the second switch and the drain of the power switch tube S21; the source of the power switch tube S21 is connected to the source of the power switch tube S22; the other end of the output inductor L6 is connected to one end of the relay Q6; the other end of the relay Q6 of the second switch is connected to the live wire of the in-vehicle discharge AC-LCAR; the other end of the relay Q7 is connected to the neutral wire of the in-vehicle discharge AC-NCAR; the first winding is n1, and the second winding is n2.

[0066] Optionally, based on the above-mentioned charging and discharging motor, the charging and discharging electrode control method provided in the embodiment of the present application can be applied to control the above-mentioned charging and discharging motor. The charging and discharging motor control method provided in the embodiment of the present application is executed by a motor controller that controls the charging and discharging motor in the target vehicle. In one embodiment, Figure 4 As shown, a charging and discharging motor control method is provided, which is described by taking the application of the method to a motor controller as an example, and specifically includes the following steps:

[0067] S401, when a charge / discharge instruction for a target vehicle is received, determining a charge / discharge type of the charge / discharge instruction.

[0068] Among them, the charge and discharge instructions are used to instruct the motor controller to control the charge and discharge of the charge and discharge motor; in the embodiment of the present application, the charge and discharge instructions include but are not limited to charge and discharge equipment, charge and discharge function power, etc. The charge and discharge types include but are not limited to simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charge outside the vehicle and discharge inside the vehicle.

[0069] Optionally, when the external charging port, external discharging port and internal discharging port recognize that a charging and discharging device is inserted, the corresponding controller in the vehicle generates charging and discharging instructions based on the inserted device, and sends the charging and discharging instructions to the motor controller; further, when the motor controller receives the charging and discharging instructions for the target vehicle, it determines the charging and discharging type based on the device type of the charging and discharging device contained in the charging and discharging instructions of the target vehicle, and the charging port and / or discharging port into which the device is inserted.

[0070] S402, determining a control strategy for a charging and discharging motor of a target vehicle according to the charging and discharging type and the charging and discharging instruction.

[0071] The control strategy includes the closing of the first switch and the second switch and the charging and discharging mode of the first winding, the second winding and the third winding.

[0072] Optionally, the first switch and the second switch may be controlled to close according to the charge and discharge type and based on the corresponding control rules; at the same time, according to the charge and discharge instructions,

[0073] In the above-mentioned charging and discharging motor control method, when a charging and discharging instruction for a target vehicle is received, the charging and discharging type of the charging and discharging instruction is determined, and based on the charging and discharging type and the charging and discharging instruction, precise control of the charging and discharging motor is achieved, thereby improving the charging and discharging efficiency and improving the user experience.

[0074] Optionally, in the embodiment of the present application, 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 and discharging inside the vehicle. Accordingly, different control strategies for charging and discharging motors should be formulated for different charging and discharging types to ensure that the charging and discharging motors are charged and discharged as required.

[0075] Optionally, if the charge and discharge type is simultaneous discharge inside and outside the vehicle, then according to the charge and discharge instructions, the first switch and the second switch in the charge and discharge motor are controlled to be closed, and the vehicle-end 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. Specifically, if the charge and discharge type is simultaneous discharge inside and outside the vehicle, it means that the vehicle-end power battery of the target vehicle needs to charge external devices and vehicle-end electrical equipment; at this time, according to the charge and discharge instructions, the first switch and the second switch in the charge and discharge motor are controlled to be closed, the vehicle-end power battery in the target vehicle is controlled to discharge to the first winding and the second winding through the third winding, and the first winding is controlled to output the power required by the external device to the external device, and the second winding is controlled to output the power required by the vehicle-end electrical equipment to the vehicle-end electrical equipment.

[0076] Furthermore, while charging external devices and vehicle-side electrical equipment, it is necessary to monitor the charging and discharging motor for faults. Specifically, if an overcurrent fault is detected in both the first winding and the second winding, the first winding, the second winding, and the third winding are simultaneously blocked and the fault is reported. If an overcurrent fault is detected in only the first winding, only the first winding is controlled to block the discharge and report the first winding fault, and the second winding remains in the discharge state. If an overcurrent fault is detected in the second winding, only the second winding is controlled to block the discharge and report the second winding fault, and the first winding remains in the discharge state; at the same time, the discharge of the second winding is attempted to be re-controlled every 1 minute. If an overcurrent fault still occurs after 3 attempts, the discharge is stopped by default.

[0077] Optionally, if the charge and discharge type is off-vehicle discharge, the first switch is controlled to close according to the charge and discharge instruction, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is controlled to discharge. Specifically, if the charge and discharge type is off-vehicle discharge, it means that the vehicle-end power battery of the target vehicle is required to charge the external device; at this time, the first switch can be controlled to close according to the charge and discharge instruction, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is controlled to output the power required by the external device to the external device.

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

[0079] Optionally, if the charge and discharge type is charging outside the vehicle and discharging inside the vehicle, then according to the charge and discharge instructions, 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 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 charge and discharge type is charging outside the vehicle and discharging inside the vehicle, it means that an external device is required to charge the vehicle-end power battery of the target vehicle, and an external device is required to charge the vehicle-end electrical equipment; at this time, according to the charge and discharge instructions, the first switch and the second switch can be controlled to be closed, and the third winding can be controlled to discharge to the vehicle-end power battery, and the external device can be controlled to charge the first winding and the second winding can be controlled to discharge to the vehicle-end electrical equipment.

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

[0081] Furthermore, in the case where the charging and discharging type is charging outside the vehicle and discharging inside the vehicle, if the power demanded by the vehicle-side electrical equipment is greater than the input power input by the external equipment to the first winding, the output end 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. Therefore, in one embodiment, if 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, obtaining first operating parameter information of a first winding and second operating parameter information of a second winding in a 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 working conditions of the first winding and the second winding in the charging and discharging motor may be monitored to obtain first working parameter information of the first winding and second working 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, it is possible to determine whether the input power of the first winding and the output power of the second winding have changed, and whether the first winding and the second winding have failed, based on the first operating parameter information and the second operating parameter information. If the input power of the first winding and the output power of the second winding have changed and / or the first winding and the second winding have failed, it is necessary to adjust the control strategy of the charging and discharging motor according to the actual situation.

[0087] In this embodiment, by monitoring the first winding and the second winding in the charging and discharging motor and based on the first working parameter information and the second working parameter information, the charging and discharging failure caused by faults is avoided and the charging and discharging efficiency of the charging and discharging motor is improved.

[0088] Optionally, based on the above embodiment, in one embodiment, 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 according to the second operating parameter information that the second winding is in an undervoltage state, determine a magnitude relationship between a first input power of the first winding and a first output power of the second winding according to the first operating parameter information and the second operating parameter information.

[0090] Optionally, if it is determined according to the second operating parameter information that the second winding is in an undervoltage state, it means that a fault occurs in the second winding and the fault needs to be processed in a timely manner.

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

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

[0093] Optionally, the magnitude relationship between the first input power of the first winding and the first output power of the second winding is different, and the corresponding adjustment method of the control strategy of the charging and discharging motor is also different.

[0094] Specifically, if the first input power of the first winding and the first output power of the second winding are in a relationship that the first input power is less than the first output power, it means that the input power of the first winding is insufficient to discharge the vehicle-end power battery and the vehicle-end electrical equipment at the same time; at this time, it is necessary to control the third winding to stop charging the vehicle-end power battery, and control the vehicle-end power battery to discharge through the third winding. That is, the external device and the vehicle-end power battery need to charge the vehicle-end electrical equipment at the same time.

[0095] Furthermore, after adjusting the control strategy, the charging and discharging motor needs to be fault-monitored. Specifically, if an overcurrent fault is detected in the second winding, the second winding is controlled to block the wave and report the fault, and the external device charges the vehicle-end power battery through the first winding and the third winding; at the same time, the second winding is tried to be controlled to discharge to the vehicle-end electrical equipment again every 1 minute. If an overcurrent fault still occurs after 3 attempts, the discharge of the second winding is stopped by default.

[0096] Optionally, if the relationship between the first input power of the first winding and the first output power of the second winding is that the first input power is equal to the first output power, it means that the input power of the first winding is just enough to charge the vehicle-end electrical equipment connected to the third winding; at this time, it is necessary to control the third winding to stop charging the vehicle-end power battery.

[0097] Furthermore, it is also necessary to monitor the faults of the charging and discharging motors. Specifically, if an overcurrent fault is detected in the second winding, the second winding is controlled to block the wave and report the fault, and the external device charges the vehicle-end power battery through the first winding and the third winding; at the same time, every 1 minute, the second winding is tried to be controlled to discharge to the vehicle-end 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, thereby ensuring that the charging and discharging motor can efficiently complete the charging and discharging process.

[0099] Figure 7 FIG. 1 is a flow chart of a charging and discharging motor control method in another embodiment. Based on the above embodiment, this embodiment provides an optional example of a charging and discharging motor control method. Figure 7 The specific implementation process is as follows:

[0100] S701, when receiving a charge and discharge instruction for a target vehicle, determining a charge and discharge type of the charge and discharge instruction.

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

[0102] S702, determine whether the charge and discharge type is simultaneous discharge inside and outside the vehicle; if so, execute S703; if not, execute S704.

[0103] S703, according to the charge and discharge instructions, control the first switch and the second switch in the charge and discharge motor to close, control the vehicle-end power battery in the target vehicle to discharge through the third winding, and control the first winding and the second winding to discharge.

[0104] S704, determine whether the charge and discharge type is off-vehicle discharge; if so, execute S705; if not, execute S706.

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

[0106] S706, determine whether the charge and discharge type is in-vehicle discharge; if so, execute S707; if not, execute S708.

[0107] S707, according to the charge and discharge instruction, control the second switch to close, control the vehicle-end power battery in the target vehicle to discharge through the third winding, and control the second winding to discharge.

[0108] S708, according to the charge and discharge instructions, 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 control 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, obtaining first operating parameter information of a first winding and second operating parameter information of a second winding in the charging and discharging motor.

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

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

[0113] Optionally, if the size relationship is that 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 size relationship is that 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 process of S701-S711 above can refer to the description of the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0115] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0116] Based on the same inventive concept, the embodiment of the present application also provides a charging and discharging motor control device for implementing the above-mentioned charging and discharging motor control method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more charging and discharging motor control device embodiments provided below can refer to the limitations of the charging and discharging motor control method above, and will not be repeated here.

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

[0118] The type determination module 10 is used to determine the charge and discharge type of the charge and discharge instruction when receiving the charge and discharge instruction for the target vehicle.

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

[0120] The above-mentioned charging and discharging motor control device, when receiving the charging and discharging instructions for the target vehicle, determines the charging and discharging type of the charging and discharging instructions, and realizes precise control of the charging and discharging motor according to the charging and discharging type and the charging and discharging instructions, thereby improving the charging and discharging efficiency and improving the user experience.

[0121] In one embodiment, the charging and discharging types include simultaneous discharging inside and outside the vehicle, discharging inside the vehicle, discharging outside the vehicle, and charging outside the vehicle and discharging inside the vehicle; the strategy determination module 20 includes:

[0122] The first determination unit is used to control the closing of the first switch and the second switch in the charging and discharging motor according to the charging and discharging instructions if the charging and discharging type is simultaneous discharge inside and outside the vehicle, and to control the vehicle-end power battery in the target vehicle to discharge through the third winding, and to control the discharge of the first winding and the second winding.

[0123] The second determination unit is used to control the first switch to close, control the vehicle-end power battery in the target vehicle to discharge through the third winding, and control the first winding to discharge according to the charge and discharge instruction if the charge and discharge type is off-vehicle discharge.

[0124] The third determination unit is used to control the second switch to close according to the charge and discharge instruction if the charge and discharge type is in-vehicle discharge, and control the vehicle-end power battery in the target vehicle to discharge through the third winding, and control the second winding to discharge.

[0125] The fourth determination unit is used to control the first switch and the second switch to close according to the charge and discharge instructions, and control the third winding to discharge to the vehicle-end power battery, and control the first winding to charge and control the second winding to discharge if the charge and discharge 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 slave unit is used to acquire first operating parameter information of a first winding and second operating parameter information of a 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 according to the first working parameter information and the second working parameter information.

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

[0130] If it is determined according to the second working parameter information that the second winding is in an undervoltage state, then the magnitude 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 working parameter information and the second working parameter information; and the control strategy of the charging and discharging motor is adjusted according to the magnitude relationship.

[0131] In one embodiment, the control slave unit is further configured to:

[0132] If the size relationship is that 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 size relationship is that 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 above-mentioned charging and discharging motor control device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0134] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG9. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a charging and discharging motor control method is implemented.

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

[0136] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0137] When receiving a charge / discharge instruction for a target vehicle, determining a charge / discharge type of the charge / discharge instruction;

[0138] According to the charging and discharging type and the charging and discharging instructions, the control strategy of the charging and discharging motor of the target vehicle is determined.

[0139] In one embodiment, the charge and discharge types include simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charge outside the vehicle and discharge inside the vehicle; when the processor executes the computer program to determine the control strategy of the charge and discharge motor of the target vehicle according to the charge and discharge types and the charge and discharge instructions, the following steps are also implemented:

[0140] If the charge and discharge type is simultaneous discharge inside and outside the vehicle, then according to the charge and discharge instructions, the first switch and the second switch in the charge and discharge motor are controlled to be closed, and the vehicle-end 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; if the charge and discharge type is discharge outside the vehicle, then according to the charge and discharge instructions, the first switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is controlled to discharge; if the charge and discharge type is discharge inside the vehicle, then according to the charge and discharge instructions, the second switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the second winding is controlled to discharge; if the charge and discharge type is charging outside the vehicle and discharging inside the vehicle, then according to the charge and discharge instructions, 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 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 and discharging type is external charging and internal discharging, the processor further implements the following steps when executing the computer program:

[0142] Acquire first operating parameter information of a first winding and second operating parameter information of a second winding in a charging and discharging motor; and adjust a 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 the computer program to adjust the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information, the following steps are also implemented:

[0144] If it is determined according to the second working parameter information that the second winding is in an undervoltage state, then the magnitude 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 working parameter information and the second working parameter information; and the control strategy of the charging and discharging motor is adjusted according to the magnitude relationship.

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

[0146] If the size relationship is that 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 size relationship is that 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, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0148] When receiving a charge / discharge instruction for a target vehicle, determining a charge / discharge type of the charge / discharge instruction;

[0149] According to the charging and discharging type and the charging and discharging instructions, the control strategy of the charging and discharging motor of the target vehicle is determined.

[0150] In one embodiment, the charge and discharge types include simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charge outside the vehicle and discharge inside the vehicle; when the processor executes the computer program to determine the control strategy of the charge and discharge motor of the target vehicle according to the charge and discharge types and the charge and discharge instructions, the following steps are also implemented:

[0151] If the charge and discharge type is simultaneous discharge inside and outside the vehicle, then according to the charge and discharge instructions, the first switch and the second switch in the charge and discharge motor are controlled to be closed, and the vehicle-end 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; if the charge and discharge type is discharge outside the vehicle, then according to the charge and discharge instructions, the first switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is controlled to discharge; if the charge and discharge type is discharge inside the vehicle, then according to the charge and discharge instructions, the second switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the second winding is controlled to discharge; if the charge and discharge type is charging outside the vehicle and discharging inside the vehicle, then according to the charge and discharge instructions, 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 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 and discharging type is external charging and internal discharging, the processor further implements the following steps when executing the computer program:

[0153] Acquire first operating parameter information of a first winding and second operating parameter information of a second winding in a charging and discharging motor; and adjust a 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 the computer program to adjust the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information, the following steps are also implemented:

[0155] If it is determined according to the second working parameter information that the second winding is in an undervoltage state, then the magnitude 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 working parameter information and the second working parameter information; and the control strategy of the charging and discharging motor is adjusted according to the magnitude relationship.

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

[0157] If the size relationship is that 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 size relationship is that 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, comprising a computer program, which, when executed by a processor, implements the following steps:

[0159] When receiving a charge / discharge instruction for a target vehicle, determining a charge / discharge type of the charge / discharge instruction;

[0160] According to the charging and discharging type and the charging and discharging instructions, the control strategy of the charging and discharging motor of the target vehicle is determined.

[0161] In one embodiment, the charge and discharge types include simultaneous discharge inside and outside the vehicle, discharge inside the vehicle, discharge outside the vehicle, and charge outside the vehicle and discharge inside the vehicle; when the processor executes the computer program to determine the control strategy of the charge and discharge motor of the target vehicle according to the charge and discharge types and the charge and discharge instructions, the following steps are also implemented:

[0162] If the charge and discharge type is simultaneous discharge inside and outside the vehicle, then according to the charge and discharge instructions, the first switch and the second switch in the charge and discharge motor are controlled to be closed, and the vehicle-end 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; if the charge and discharge type is discharge outside the vehicle, then according to the charge and discharge instructions, the first switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is controlled to discharge; if the charge and discharge type is discharge inside the vehicle, then according to the charge and discharge instructions, the second switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the second winding is controlled to discharge; if the charge and discharge type is charging outside the vehicle and discharging inside the vehicle, then according to the charge and discharge instructions, 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 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 and discharging type is external charging and internal discharging, the processor further implements the following steps when executing the computer program:

[0164] Acquire first operating parameter information of a first winding and second operating parameter information of a second winding in a charging and discharging motor; and adjust a 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 the computer program to adjust the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information, the following steps are also implemented:

[0166] If it is determined according to the second working parameter information that the second winding is in an undervoltage state, then the magnitude 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 working parameter information and the second working parameter information; and the control strategy of the charging and discharging motor is adjusted according to the magnitude relationship.

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

[0168] If the size relationship is that 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 size relationship is that 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, storage, display, etc.) are all information and data fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0170] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium 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), magnetoresistive 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. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0171] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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 above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A charging and discharging motor, characterized in that: It includes: a transformer, a first switch and a second switch; 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; The first winding is used to be electrically connected to an external device through the first switch, and when the first switch is closed, the first winding is electrically connected to the third winding; The second winding is used to be electrically connected to the vehicle-end electrical equipment through the second switch, and 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; The third winding is used to be electrically connected 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.

2. The charging and discharging motor according to claim 1, characterized in that: The charging and discharging motor further comprises: an external AC circuit, a high-voltage DC circuit and an internal discharge circuit; The first winding is connected to the first switch through the off-vehicle AC circuit; The third winding is electrically connected to the vehicle-end power battery through the high-voltage DC circuit; The second winding is connected to the second switch through the in-vehicle discharge circuit.

3. The charging and discharging motor according to claim 2, characterized in that: The off-vehicle AC circuit includes a power factor correction circuit and an inverter circuit; 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; The other end of the inverter circuit is connected to the first winding.

4. A charging and discharging motor control method, characterized in that: include: In case of receiving a charge and discharge instruction for a target vehicle, determining a charge and discharge type of the charge and discharge instruction; According to the charging and discharging type and the charging and discharging instruction, a control strategy of the charging and discharging motor of the target vehicle is determined; wherein the charging and discharging motor is implemented based on any one of claims 1-3.

5. The method according to claim 4, characterized in that 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 and discharging inside the vehicle; Correspondingly, the control strategy of the charging and discharging motor of the target vehicle is determined according to the charging and discharging type and the charging and discharging instruction, including: If the charge and discharge type is simultaneous discharge inside and outside the vehicle, then according to the charge and discharge instruction, the first switch and the second switch in the charge and discharge motor are controlled to be closed, and the vehicle-end 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; If the charge and discharge type is off-vehicle discharge, then according to the charge and discharge instruction, the first switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the first winding is controlled to discharge; If the charge and discharge type is in-vehicle discharge, then according to the charge and discharge instruction, the second switch is controlled to be closed, and the vehicle-end power battery in the target vehicle is controlled to discharge through the third winding, and the second winding is controlled to discharge; If the charge and discharge type is charging outside the vehicle and discharging inside the vehicle, then according to the charge and discharge instructions, 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 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.

6. The method according to claim 5, characterized in that If the charging and discharging type is charging outside the vehicle and discharging inside the vehicle, the method further includes: Acquire first operating parameter information of a first winding and second operating parameter information of a second winding in the charging and discharging motor; According to the first operating parameter information and the second operating parameter information, a control strategy of the charging and discharging motor is adjusted.

7. The method according to claim 6, characterized in that The step of adjusting the control strategy of the charging and discharging motor according to the first operating parameter information and the second operating parameter information includes: If it is determined according to the second operating parameter information that the second winding is in an undervoltage state, then determining a magnitude relationship between a first input power of the first winding and a first output power of the second winding according to the first operating parameter information and the second operating parameter information; According to the size relationship, the control strategy of the charging and discharging motor is adjusted.

8. The method according to claim 7, characterized in that The step of adjusting the control strategy of the charging and discharging motor according to the size relationship includes: If the magnitude relationship is that 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 magnitude relationship is that the first input power is equal to the first output power, the third winding is controlled to stop charging the vehicle-end power battery.

9. A charging and discharging motor control device, characterized in that: The device comprises: A type determination module, configured to determine the charge and discharge type of the charge and discharge instruction upon receiving the charge and discharge instruction for the target vehicle; A strategy determination module is used to determine the control strategy of the charging and discharging motor of the target vehicle according to the charging and discharging type and the charging and discharging instructions; wherein the charging and discharging motor is implemented based on any one of claims 1-3.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 4 to 8 are implemented.

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