Drive control device, charging control method, device, apparatus, and storage medium

Abstract

The application discloses a driving control device, a battery charging control method, a device, equipment and a storage medium. The driving control device comprises a first driving module, a second driving module, a first direct current charging module, a second direct current charging module and a first switch. The first switch is arranged between the first driving module and the second driving module. Two electrode terminals of the first direct current charging module are respectively connected with a first motor and a first motor controller of the first driving module, and two electrode terminals of the second direct current charging module are respectively connected with a second motor and a second motor controller of the second driving module. The application has higher charging efficiency and faster charging speed.

Description

Technical Field

[0001] This application relates to the field of batteries, specifically to a drive control device, a battery charging control method, an apparatus, a device, and a storage medium. Background Technology

[0002] With the continuous development of power battery technology, power batteries have been widely used in new energy vehicles, consumer electronics, energy storage systems, and other fields. Furthermore, to further enhance battery performance, drive control devices based on dual motors are becoming increasingly popular.

[0003] Dual-motor drive control systems help enhance battery range, but they also require batteries with higher rated voltages. Higher voltage batteries, in turn, place higher demands on charging efficiency. Current drive control systems still suffer from low charging efficiency and long charging times.

[0004] It should be noted that the above statements are only used to provide background information related to this application and do not necessarily constitute prior art. Summary of the Invention

[0005] In view of the above problems, embodiments of this application provide a drive control device, battery charging control method, apparatus, device, and storage medium with higher charging efficiency and faster charging speed.

[0006] In a first aspect, embodiments of this application provide a drive control device, including: a first drive module, a second drive module, a first DC charging module, a second DC charging module, and a first switch;

[0007] The first switch is disposed between the first drive module and the second drive module;

[0008] The two terminals of the first DC charging module are respectively connected to the first motor and the first motor controller of the first drive module, and the two terminals of the second DC charging module are respectively connected to the second motor and the second motor controller of the second drive module.

[0009] The drive control device provided in this application embodiment, when both DC charging modules are connected to the charging device, can disconnect the first switch, and each DC charging module is connected to a drive module, forming a current loop. These two current loops can charge the motor's inductor and also rapidly charge the battery connected to the drive module. When both DC charging modules are connected to the charging device, if the output power of the charging device is greater than the transmission power of the drive module, the first switch can be closed, connecting the two drive modules. This also allows the two drive modules to form two current loops, enabling high-power rapid charging, effectively reducing charging time, and improving user satisfaction with the electrical device.

[0010] In some embodiments, the first switch is disposed on the neutral line between the first motor and the second motor.

[0011] In some embodiments, the positive terminal of the first DC charging module is connected between the neutral point of the first motor and the first switch, and the negative terminal of the first DC charging module is connected to the negative terminal of the first drive module; the positive terminal of the second DC charging module is connected between the neutral point of the second motor and the first switch, and the negative terminal of the second DC charging module is connected to the negative terminal of the second drive module.

[0012] In some embodiments, a second switch is provided between the first DC charging module and the first motor, and a third switch is provided between the first DC charging module and the first motor controller in the first drive module; a fourth switch is provided between the second DC charging module and the second motor, and a fifth switch is provided between the second DC charging module and the second motor controller in the first drive module. When preparing to charge, the drive modules participating in the charging can be determined based on the connection status between the DC charging modules and the charging device, and the corresponding switches can be closed sequentially to form corresponding current loops, thereby better realizing the charging control process of the drive control device.

[0013] Secondly, embodiments of this application provide an electrical device, including a power supply module and the drive control device described in the first aspect, wherein the first drive module and the second drive module are connected in parallel between the positive and negative terminals of the power supply module.

[0014] In some embodiments, the power supply module includes a first battery and a second battery connected in parallel, and a sixth switch is provided between the positive terminals of the first battery and the second battery. This allows the drive control device provided in this application embodiment to be more widely used and the charging control process to be more flexible.

[0015] In some embodiments, the power supply module includes a battery and a main control device, the main control device being disposed between the battery and the first drive module and the second drive module connected in parallel; the main control device includes a positive terminal branch and a negative terminal branch, the positive terminal branch being connected to the positive terminal of the battery, the positive terminal of the first drive module, and the positive terminal of the second drive module, respectively; the negative terminal branch being connected to the negative terminal of the battery, the negative terminal of the first drive module, and the negative terminal of the second drive module, respectively; a pre-charge control component is connected to either the positive terminal branch or the negative terminal branch. Thus, the main control device can be used to control the switching on and off of various local circuits of the drive control device to realize various functions of the drive control device, such as, but not limited to, power supply function, self-heating function, preheating function, and circuit safety protection function. Specifically, the main control device may include, but is not limited to, contactors, relays, fuses, resistors, sensors, high-voltage wiring harnesses, and high-voltage connectors.

[0016] Thirdly, embodiments of this application provide a battery charging control method, applied to the drive control device described in the first aspect and the electrical device described in the second aspect, the method comprising:

[0017] Determine the connection status between the first DC charging module and the second DC charging module and the charging device;

[0018] Based on the connection state, a current loop is formed between the charging device, the first driving module, and the second driving module.

[0019] The battery charging control method provided in this application first determines the connection state between two DC charging modules and the charging device. Then, based on the connection state, it controls the drive control device to form different current loops between the charging device and the power supply module. Different drive modules participate in charging in each current loop. When both drive modules participate in charging in the current loop, the battery can be charged simultaneously using two current loops, thereby meeting the high-power fast charging requirements of the battery. This allows for fast and efficient charging of the battery in the power supply module, effectively reducing the battery charging time.

[0020] In some embodiments, controlling the formation of a current loop between the charging device, the first driving module, and the second driving module based on the connection state includes: detecting that both the first DC charging module and the second DC charging module are connected to the charging device, controlling the first switch to disconnect, and forming a first current loop between the charging device and the first driving module, and a second current loop between the charging device and the second driving module. Compared to charging with a single DC charging module, this first connection state uses two DC charging modules to charge the battery simultaneously, which can significantly improve the battery charging efficiency.

[0021] In some embodiments, controlling the formation of a current loop between the charging device, the first driving module, and the second driving module based on the connection state includes: detecting that one of the first DC charging module and the second DC charging module is connected to a charging device; determining the driving module that forms the current loop among the first and second driving modules based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device; and controlling the formation of a current loop between the charging device and the driving module based on the driving module that forms the current loop. Given that the output power of the charging device may be greater than, less than, or equal to, the operating power of the driving module, this embodiment determines the specific driving module that forms the current loop among the first and second driving modules based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device, and controls the formation of a current loop between the charging device and the driving module based on the driving module that forms the current loop, thereby achieving more scientific charging strategy control and maximizing charging efficiency.

[0022] In some embodiments, determining the driving module forming a current loop in the first and second driving modules based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device includes: determining that the first and second driving modules are connected and both form a current loop based on the power parameters of the charging device being greater than the power parameters of the driving module connected to the charging device. When the power parameters of the charging device are greater than the power parameters of the driving module connected to the charging device, controlling the first and second driving modules to be connected, and ensuring that both the first and second driving modules form a current loop with the charging device, allows the use of a high-power charging device to charge the battery, achieving a faster charging speed.

[0023] In some embodiments, determining the driving module forming a current loop in the first and second driving modules based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device includes: determining that the first and second driving modules are disconnected based on the power parameters of the charging device being less than or equal to the power parameters of the driving module connected to the charging device, and that the driving module connected to the DC charging module of the charging device forms a current loop. When the power parameters of the charging device are less than the power parameters of the driving module connected to the charging device, the first and second driving modules are disconnected, and only one driving module forms a current loop with the charging device, allowing for high-current power transfer to increase the current in the current loop, thereby maximizing charging efficiency and achieving higher charging efficiency.

[0024] In some embodiments, the battery charging control method further includes: controlling the disconnection between the power supply module and the drive module in the current loop, charging the motor inductor included in the drive module in the current loop through the charging device in the current loop; and, when the energy storage of the motor inductor meets a preset condition, controlling the restoration of conduction between the power supply module and the drive module, and boost charging the battery of the power supply module through the charging device and the motor inductor. In this embodiment, the drive control device is first controlled to form a current loop for the motor inductor composed of the DC charging module and the drive module. After the motor inductor has completed energy storage, the drive control device is then controlled to form a current loop for the battery. At this time, it can be regarded as the charging device and the motor charging the battery simultaneously to realize the boost charging process of the battery.

[0025] In some embodiments, the battery charging control method further includes: when one of the first DC charging module and the second DC charging module is connected to a charging device, based on the detection that a DC charging module that was not connected to a charging device is also connected to a charging device, the connection status between the first DC charging module and the second DC charging module and the charging device is redefined. Thus, when the other DC charging module is also connected to a charging device, the connection status between the first DC charging module and the second DC charging module and the charging device can be redefined in a timely manner, and the current loop can be adjusted to achieve higher charging efficiency.

[0026] Fourthly, embodiments of this application provide a battery charging control device, the battery charging control device comprising:

[0027] A connection status determination module is used to determine the connection status between the first DC charging module and the second DC charging module and the charging device.

[0028] A current loop control module is used to control the formation of a current loop between the charging device, the first drive module, and the second drive module based on the connection state.

[0029] Fifthly, embodiments of this application provide an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor running the computer program to implement the method as described in the first aspect.

[0030] In a sixth aspect, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the method described in the first aspect.

[0031] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0033] Figure 1 A schematic diagram of the structure of an electrical device for which the drive control device provided in some embodiments of this application is applied;

[0034] Figure 2 This is a schematic diagram of the frame structure of the drive control device provided in some embodiments of this application;

[0035] Figure 3 This is a schematic diagram of the frame structure of the drive control device provided in some other embodiments of this application;

[0036] Figure 4 This is a schematic diagram of the specific structure of the drive control device in some embodiments of this application;

[0037] Figure 5 This is a schematic diagram of the specific structure of the drive control device in some other embodiments of this application;

[0038] Figure 6 This is a schematic flowchart of the battery charging control method provided in the embodiments of this application;

[0039] Figure 7This is a schematic flowchart illustrating the specific steps of step S2 in the battery charging control method provided in some embodiments of this application.

[0040] Figure 8 This is a schematic flowchart illustrating the specific steps of step S2 in the battery charging control method provided in other embodiments of this application.

[0041] Figure 9 This is a schematic flowchart illustrating the specific steps of step S2 in the battery charging control method provided in some embodiments of this application.

[0042] Figure 10 This is a schematic diagram of the processing logic of a battery charging control method provided in some embodiments of this application;

[0043] Figure 11 This is a schematic diagram illustrating the specific process of the dual-gun charging step in the processing logic of the battery charging control method provided in some embodiments of this application.

[0044] Figure 12 This is a schematic diagram illustrating the specific process of the single-gun charging step in the processing logic of the battery charging control method provided in some embodiments of this application.

[0045] Figure 13 This is a schematic diagram of the structure of a battery charging control device provided in some embodiments of this application;

[0046] Figure 14 The present application provides a schematic diagram of the structure of an electronic device according to some embodiments;

[0047] Figure 15 A schematic diagram of a storage medium provided in some embodiments of this application is shown. Detailed Implementation

[0048] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of this application pertain; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings of this application are intended to cover non-exclusive inclusion.

[0050] In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0052] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0053] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0054] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0055] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0056] Although drive control devices have been widely used in new energy vehicles, battery charging remains a significant constraint on their faster development. For power batteries, fast charging remains a technical challenge that needs to be overcome by those skilled in the art. This is especially true for higher-voltage batteries, which often require longer charging times at the same charging power.

[0057] In related technologies, a DC charging module can be provided for the drive control device. This DC charging module can be connected to the battery and the charging device of the peripheral device respectively, and the battery can be charged through the charging device. However, with the continuous development of battery technology and the continuous upgrading of the battery requirements of electrical equipment, the battery capacity and voltage are designed to be higher and higher. Using a DC charging module to charge the battery is less efficient and increasingly unable to meet the battery requirements of electrical equipment.

[0058] Based on the above considerations, this application proposes a drive control device comprising two drive modules and two DC charging modules, with a first switch positioned between the two drive modules. The two drive modules and the two DC charging modules are connected one-to-one. The two electrodes of each DC charging module are connected to the motor and motor controller of the drive module, respectively. Thus, when both DC charging modules are connected to a charging device, the first switch can be disconnected, allowing each DC charging module to connect to one drive module and form a current loop. These two current loops can charge the inductor of the motor and also provide fast charging for the battery connected to the drive module. When both DC charging modules are connected to a charging device, if the output power of the charging device exceeds the transmission power of the drive module, the first switch can be closed, connecting the two drive modules. This also allows the two drive modules to form two current loops, enabling high-power fast charging, effectively reducing charging time and improving user satisfaction with the electrical device.

[0059] The drive control device disclosed in this application can be used, but is not limited to, in the power battery systems of electrical equipment such as vehicles, ships, or aircraft. The power system of such electrical equipment can be composed using the drive control device disclosed in the embodiments of this application. This is beneficial for improving the charging efficiency of the drive control device, reducing charging time, further meeting the fast charging needs of electrical equipment, and thereby improving the user experience satisfaction of the electrical equipment.

[0060] This application provides an electrical device that uses a battery as a power source. This device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0061] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0062] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A drive control device is provided inside the vehicle 1000. The drive control device includes a battery 100, which can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the operating power source for the vehicle 1000. The drive control device may also include a controller 200 and a motor 300. The controller 200 controls the battery 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0063] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0064] Please refer to Figure 2 , Figure 2 This is a schematic diagram of the structure of the drive control device provided in some embodiments of this application, such as... Figure 2 As shown, the drive control device includes a first drive module, a second drive module, a first DC charging module, a second DC charging module, and a first switch K1. The first switch is located between the first drive module and the second drive module. The two terminals of the first DC charging module are respectively connected to the first motor and the first motor controller of the first drive module, and the two terminals of the second DC charging module are respectively connected to the second motor and the second motor controller of the second drive module.

[0065] The DC charging module can be considered as a charging interface for the power battery, used to connect to the charging device, receive the power input from the charging device, and transmit it to the battery after passing through the drive module, thereby achieving the purpose of charging the battery. Both the first and second DC charging modules can be adapted to charging devices with different voltages and power, and adapt the output voltage and power to the drive module.

[0066] Using the drive control device provided in this embodiment, when the DC charging module is connected to the charging device, different current loops can be formed between the charging device and the drive module based on the different connection states between the two DC charging modules and the charging device. Different drive modules participate in charging in each current loop. When both drive modules in the current loop participate in charging, the battery can be charged simultaneously using two current loops, which can meet the high-power fast charging requirements of the battery. This allows for fast and efficient charging of the battery in the power supply module, effectively reducing the battery charging time.

[0067] Specifically, the first switch K1 can be set on the neutral line between the first motor and the second motor. In this way, by setting a single switch, the connection and disconnection between the first drive module and the second drive module can be realized, making the overall control process safer and more reliable.

[0068] In some embodiments, the positive terminal of the first DC charging module is connected between the neutral point of the first motor and the first switch, and the negative terminal of the first DC charging module is connected to the negative terminal of the first drive module; the positive terminal of the second DC charging module is connected between the neutral point of the second motor and the first switch, and the negative terminal of the second DC charging module is connected to the negative terminal of the second drive module. Thus, by connecting the positive terminals of the two DC charging modules to the two motors respectively, both DC charging modules can charge the motor inductors, and consequently, both motors can charge the battery. This makes charging the battery using this drive control device more efficient and reliable.

[0069] In this context, the positive terminal of the drive module can be understood as the end closest to the motor controller, i.e., the end connected to the positive terminal of the battery. The negative terminal of the drive module can be understood as the end closest to the motor, i.e., the end connected to the negative terminal of the battery. Therefore, connecting the negative terminal of the DC charging module to the negative terminal of the drive module is equivalent to connecting the negative terminal of the DC charging module to the negative terminal of the battery.

[0070] It is understood that the connection method of the two electrodes of the two DC charging modules described above is only one implementation method of this application embodiment. This embodiment is not limited thereto. For example, when both drive modules participate in forming a current loop, as long as at least one DC charging module in the current loop is connected to the motor and can charge the inductance of the motor, high-power fast charging of the battery can be achieved.

[0071] In some embodiments, a second switch K2 may be provided between the first DC charging module and the first motor, and a third switch K3 may be provided between the first DC charging module and the first motor controller in the first drive module. A fourth switch K4 may be provided between the second DC charging module and the second motor, and a fifth switch K5 may be provided between the second DC charging module and the second motor controller in the first drive module.

[0072] The second switch K2, the third switch K3, the fourth switch K4, and the fifth switch K5 are configured similarly to the first switch K1. They can all be, but are not limited to, high-voltage contactors, relays, etc. As long as the circuit between the first DC charging module and the first motor, the first DC charging module and the first motor controller, the second DC charging module and the second motor, and the second DC charging module and the second motor controller can be connected or disconnected by controlling the opening and closing of the circuits of the second DC charging module and the second motor controller, respectively.

[0073] In practical applications, to further improve the safety and reliability of the current loop, such as Figure 3 As shown, switches can be installed at both the positive and negative terminals of the two DC charging modules. Specifically, a second switch K2 can be installed between the positive terminal of the first DC charging module and the first motor, and a third switch K3 can be installed between the negative terminal of the first DC charging module and the first motor controller. A fourth switch K4 can be installed between the positive terminal of the second DC charging module and the second motor, and a fifth switch K5 can be installed between the negative terminal of the second DC charging module and the second motor controller, to control the on / off state of the current loop formed by the two DC charging modules respectively. When preparing to charge, the drive module participating in the charging can be determined according to the connection status between the DC charging module and the charging device, and the corresponding switches can be closed sequentially to form the corresponding current loop, thereby better realizing the charging control process of the drive control device.

[0074] As can be understood, in this embodiment, the positive terminal of the DC charging module is connected to the motor, and the negative terminal is connected to the motor controller. Therefore, the DC charging module, the motor, and the motor controller form a current loop for charging the motor inductor. The motor controller is connected between the positive and negative terminals of the battery. When the negative terminal of the DC charging module is connected to the motor controller, it is connected to the end of the motor controller closest to the negative terminal of the battery, which is equivalent to the negative terminal of the DC charging module being connected to the negative terminal of the battery. When the DC charging module and the motor controller are conductive, it also means that the DC charging module and the negative terminal of the battery are conductive.

[0075] This application embodiment also provides an electrical device, which includes a drive control device for any of the above embodiments of the power supply module, and the first drive module and the second drive module are connected in parallel between the positive and negative terminals of the power supply module.

[0076] It is understood that the electrical device can be a power battery system including the aforementioned drive control device, or it can be an electrical device that uses the aforementioned power battery system, such as electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Since the electrical device includes the aforementioned drive control device, it can at least achieve the beneficial effects that the aforementioned drive control device can achieve, which will not be elaborated further here.

[0077] The power supply module may include a battery, a battery management system (BMS), and a main control device, such as... Figure 3 As shown. The battery can be implemented using a power battery, and includes at least one battery pack. The battery pack can be a collection of multiple battery modules, or a battery module including multiple cells. The battery management system can be connected to the vehicle control unit (VCU) to collect, process, and store information during battery operation (such as voltage, temperature, charge, and current), and exchange information with external devices such as the vehicle control unit to ensure the safe and reliable operation of the battery.

[0078] The aforementioned main control device can be positioned between the battery and the first and second drive modules connected in parallel. The main control device includes a positive terminal branch and a negative terminal branch. The positive terminal branch is connected to the positive terminal of the battery, the positive terminal of the first drive module, and the positive terminal of the second drive module, respectively; the negative terminal branch is connected to the negative terminal of the battery, the negative terminal of the first drive module, and the negative terminal of the second drive module, respectively. A pre-charge control component can be connected to either the positive or negative terminal branch. Thus, the main control device can be used to control the switching on and off of various local circuits of the drive control device to achieve various functions of the drive control device, such as, but not limited to, power supply function, self-heating function, preheating function, and circuit safety protection function. Specifically, the main control device may include, but is not limited to, contactors, relays, fuses, resistors, sensors, high-voltage wiring harnesses, and high-voltage connectors.

[0079] Specifically, such as Figure 4As shown, the positive terminal branch of the main control device can be equipped with two positive main control switches. These switches are connected to the positive terminal of the battery and a motor controller, respectively, to control the connection and disconnection between the battery and the two drive modules. The negative terminal branch of the main control device can be equipped with a pre-charge control component and a negative main control switch K9 connected in parallel with it. This pre-charge control component can be used to control the drive control device to complete the high-voltage power-on process. Specifically, it can include a pre-charge resistor R and a pre-charge switch K8. When high-voltage power-on is required, the pre-charge switch K8 can be turned on and the negative main control switch K9 can be turned off. Pre-charging is considered complete when the voltage across the pre-charge terminals reaches the pre-charge voltage value. Then, the negative main control switch K9 can be turned on and the pre-charge switch K8 can be turned off to complete the high-voltage power-on process.

[0080] It is understood that this embodiment does not specifically limit the position of the main control switch and the precharge control component; for example, it can also be as follows: Figure 5 As shown, a negative main control switch K7 is provided in the negative terminal branch of the main control device. This negative main control switch K7 can be connected to the negative terminal of the battery and the motor controller, respectively. Two sets of pre-charge control components are provided in the positive terminal branch of the main control device, along with positive main control switches K91 and K92 connected in parallel with the two pre-charge control components, respectively. The two sets of pre-charge control components can be referred to as the first pre-charge control component and the second pre-charge control component. The two ends of the first pre-charge control component can be connected to the positive terminal of the battery and the positive terminal of the first drive module, respectively. The two ends of the second pre-charge control component can be connected to the positive terminal of the battery and the positive terminal of the second drive module, respectively. The first pre-charge control component may include a first pre-charge switch K81 and a first pre-charge resistor R1, and the second pre-charge control component may include a second pre-charge switch K82 and a second pre-charge resistor R2.

[0081] For the first drive module and the second drive module, such as Figure 3 and Figure 4 As shown, the first drive module may include a first motor and a first motor controller, and the second drive module includes a second motor and a second motor controller. Both the first and second motor controllers can be implemented using various types of switches. For example, they can be implemented using an inverter in the motor drive system, where the inverter can be implemented using an arm circuit of an Insulated Gate Bipolar Transistor (IGBT). Specifically, the number of arms in the arm circuit is the same as the number of windings in the motor, and can be, but is not limited to, three-phase, six-phase, etc. For example, both the first and second motors can be three-phase motors, and the arm circuit can include three-phase arms, including A-phase, B-phase, and C-phase arms, or U-phase, V-phase, and W-phase arms.

[0082] Each phase bridge arm has an upper bridge arm and a lower bridge arm, and each upper bridge arm and lower bridge arm is equipped with a switching unit. The specific structure of the switching unit may be, but is not limited to, as shown in the figure below. Figure 4 As shown, all configurations include parallel-connected transistors and diodes (e.g., V11 and D11). When the current through the bridge arm exceeds the diode's conduction threshold, the diode can be reverse-biased, thus providing overcurrent protection for the transistor. This diode can be, but is not limited to, a freewheeling diode. During battery charging control adjustment, when the current loop formed by the drive control device flows into the diode's negative terminal and out through its positive terminal, in this context, turning on the bridge arm can be understood as closing the transistor. Conversely, when the current loop formed by the drive control device flows into the diode's positive terminal and out through its negative terminal, in this context, turning on the bridge arm can either close the transistor or leave it open, allowing the current to flow through the freewheeling diode.

[0083] Both the first and second motors can include M-phase windings. Multiple windings are connected collinearly and share a common connection point, which can be called the neutral line and the neutral point. The end of each winding furthest from the neutral point is connected to the connection points of the upper and lower arms of a phase bridge arm, respectively. The battery pack, the M-phase bridge arm, and the motor are connected in parallel, with the upper and lower arm connection points of the M-phase bridge arm corresponding one-to-one with the M-phase windings of the M-phase motor.

[0084] It is understood that the first and second motors mentioned above are not limited to three-phase motors, but can also be six-phase, twelve-phase, etc. Correspondingly, the first motor controller and the second motor controller can also be six-phase bridge arms. Moreover, the number of upper bridge arms and the number of lower bridge arms that are turned on each time can be the same or different, and this embodiment does not make specific limitations on this.

[0085] The first switch K1 between the first motor and the second motor can be, but is not limited to, a high-voltage contactor, a relay, etc., as long as the connection between the first motor and the second motor can be achieved by controlling the opening and closing of the first switch K1.

[0086] In other embodiments, such as Figure 5 As shown, the power supply module may include a first battery and a second battery connected in parallel, and a sixth switch K6 is provided between the positive terminals of the first battery and the second battery. That is, this embodiment can also be applied to a dual-battery scenario. When the sixth switch K6 is turned on, the first battery and the second battery are connected, and the DC charging module can charge both batteries simultaneously. When one battery has sufficient charge, the sixth switch K6 can be turned off, and only the battery with insufficient charge can be charged. This makes the drive control device provided in this embodiment more widely applicable and the charging control process more flexible.

[0087] The sixth switch K6 can be configured similarly to the first switch K1 to the fifth switch K5 mentioned above, or it can be, but is not limited to, a high-voltage contactor, a relay, etc., as long as the connection between the first battery and the second battery can be controlled by controlling the opening and closing of the sixth switch K6.

[0088] like Figure 5 As shown, a sixth switch K6 can be connected between the positive terminals of the first and second batteries. When both batteries need to be charged, if both drive modules participate in charging, they can each form a current loop. In this case, the sixth switch K6 can be controlled to open, allowing the two current loops to charge the first and second batteries one-to-one. If only one of the drive modules participates in charging, the drive control device can form a single current loop. In this case, the sixth switch K6 can be controlled to open, allowing this single current loop to charge both the first and second batteries simultaneously.

[0089] It should be noted that in this embodiment, a negative main control switch K7 is provided on the negative terminal branch of the main control device. One end of the negative main control switch K7 is connected to the negative terminals of the first battery and the second battery, and the other end is connected to the motor controller. Two sets of pre-charge control components are provided on the positive terminal branch of the main control device, along with positive main control switches K91 and K92 connected in parallel with the two pre-charge control components, respectively. The two sets of pre-charge control components can be referred to as the first pre-charge control component and the second pre-charge control component. The two ends of the first pre-charge control component can be connected to the positive terminal of the battery and the positive terminal of the first drive module, respectively. The two ends of the second pre-charge control component can be connected to the positive terminal of the battery and the positive terminal of the second drive module, respectively. The first pre-charge control component may include a first pre-charge switch K81 and a first pre-charge resistor R1, and the second pre-charge control component may include a second pre-charge switch K82 and a second pre-charge resistor R2. However, this embodiment is only one embodiment of this application, and is not limited thereto. For a dual-battery drive control device, it can also be implemented as follows. Figure 4 As shown, a positive main control switch is set in the positive terminal branch of the main control device, two sets of pre-charge control components are set in the negative terminal branch of the main control device, and a negative main control switch is connected in parallel with the two pre-charge control components respectively.

[0090] In addition, it is understood that the power supply module may also include multiple batteries connected in series, and the multiple batteries connected in series can be regarded as a whole, that is, still a single battery. The specific structure can be referred to the above embodiments, which will not be repeated here.

[0091] Based on the same concept as the aforementioned drive control device, this embodiment also provides a battery charging control method, applicable to the aforementioned drive control device or electrical device, such as... Figure 6 As shown, the method includes the following steps:

[0092] Step S1: Determine the connection status between the first DC charging module and the second DC charging module and the charging device.

[0093] The execution entity of this battery charging control method can be either the motor controller or the vehicle controller, or it can be jointly executed by the two controllers, or it can be a dedicated battery charging control device. This embodiment does not specifically limit this. For ease of understanding, this embodiment uses a battery charging control device as an example for specific explanation.

[0094] In practical applications, the battery charging control device can detect the connection status between the DC charging module and the charging device in real time. When a charging device is connected to the DC charging module, the DC charging module can send a connection signal, such as a high-level signal, to the battery charging control device. That is, if the battery charging control device receives a connection signal from a DC charging module, it determines that the DC charging module is connected to the charging device. Therefore, the battery charging control device can determine the DC charging module connected to the charging device based on the received connection signal. For example, if a connection signal is received, it can be determined that only one DC charging module is connected to the charging device, and then the specific DC charging module connected can be determined based on the information from the sender of the connection signal.

[0095] Step S2: Based on the connection status, control the formation of a current loop between the charging device, the first drive module, and the second drive module.

[0096] In practical applications, after the battery charging control device determines the connection status of the DC charging module and the charging device, it can control the on / off state of each switch of the drive control device according to the determined connection status to form the current loop corresponding to each connection status.

[0097] In some embodiments, step S2 may include the following processing: detecting that both the first DC charging module and the second DC charging module are connected to a charging device, which may be referred to as a first connection state, controlling the first switch to be disconnected, and forming a first current loop between the charging device and the first driving module, and a second current loop between the charging device and the second driving module.

[0098] In practical applications, when the battery charging control device detects that both DC charging modules are connected to the charging device based on the received connection signal, it can determine that the battery is being charged through these two DC charging modules. Therefore, the two drive modules can be connected one-to-one with the two DC charging modules to form two independent current loops. Based on this charging logic, the two drive modules can be disconnected; that is, the first switch K1 is opened, and the first and second drive modules each form their own current loops. Compared to charging with a single DC charging module, using two DC charging modules to charge the battery simultaneously significantly improves the battery charging efficiency.

[0099] Based on the aforementioned first connection state, the step of controlling the formation of a current loop between the charging device, the drive module, and the power supply module may include, as follows: Figure 7 The processing flow is as follows: Step S21a, control the first switch K1 to open, and control the bridge arm connected to the positive terminal of the power supply module in the first drive module and the second drive module to conduct; Step S22a, control the positive terminal of the first DC charging module to conduct with the first motor, and control the negative terminal of the first DC charging module to conduct with the negative terminal of the power supply module, forming a first current loop; Step S23a, control the positive terminal of the second DC charging module to conduct with the second motor, and control the negative terminal of the second DC charging module to conduct with the negative terminal of the power supply module, forming a second current loop.

[0100] like Figure 4 As shown, based on the indication of the first connection state, when both DC charging modules are connected to the charging device, the first switch K1 can be controlled to open, thereby disconnecting the neutral line between the first motor and the second motor. The bridge arm connected to the positive terminal of the battery in the first motor controller and the bridge arm connected to the positive terminal of the battery in the second motor controller are then controlled to open, thus establishing a connection between the drive module and the battery. Then, the positive terminal of the first DC charging module is connected to the first motor, the negative terminal of the first DC charging module is connected to the negative terminal of the power supply module, and the negative terminal of the second DC charging module is connected to the negative terminal of the power supply module. Thus, the first DC charging module, the first drive module, and the battery can be connected in series to form a first current loop, and the second DC charging module, the second drive module, and the battery can be connected in series to form a second current loop.

[0101] Specifically, the first switch K1 can be opened, and transistors V11-V13, the second switch K2 connecting the positive terminal of the first DC charging module to the first motor, and the third switch K3 connecting the negative terminal of the first DC charging module to the first motor controller can be closed respectively. Then, the first DC charging module, the first drive module, and the battery can be connected in series to form a first current loop. Next, transistors V14-V16, the fourth switch K4 connecting the positive terminal of the second DC charging module to the second motor, and the fifth switch K5 connecting the negative terminal of the second DC charging module to the second motor controller can be closed respectively. Then, the second DC charging module, the second drive module, and the battery can be connected in series to form a second current loop.

[0102] It is understandable that when the bridge arm of the motor controller is turned on, one bridge arm of the motor controller can be turned on, or multiple bridge arms can be turned on. In this embodiment, all three bridge arms can be turned on to improve the power transmission capability of the motor controller.

[0103] In other embodiments, the step of controlling the formation of a current loop between the charging device, the first driving module, and the second driving module based on the connection state may further include the following processing: detecting that one of the first DC charging module and the second DC charging module is connected to the charging device; determining the driving module that forms the current loop in the first driving module and the second driving module based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device; and controlling the formation of a current loop between the charging device and the driving module based on the driving module that forms the current loop.

[0104] The power parameters can include the power value, or parameters such as voltage and current from which the power value can be calculated. The output power value of the drive module is often determined by the motor controller with a smaller power value; therefore, the power parameters of the drive module here can also be understood as the power of the motor controller.

[0105] In practical applications, the output power of the charging device may be greater than, less than, or equal to the operating power of the drive module. When the output power of the charging device is greater than the operating power of the drive module, two drive modules can be used to transfer power separately to achieve a faster charging speed. When the output power of the charging device is less than or equal to the operating power of the drive module, only one drive module can be used for power transfer to increase the current in the current loop, thereby maximizing charging efficiency. Therefore, when the battery charging control device detects that only one DC charging module is connected to the charging device based on the received connection signal, it can first obtain the output power of the charging device. Based on the power parameters of the charging device and the power parameters of the drive module connected to the charging device, it can determine the specific drive module forming the current loop in the first and second drive modules to achieve more scientific charging strategy control and maximize charging efficiency.

[0106] Specifically, the step of determining the driving module forming a current loop in the first and second driving modules based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device can include the following two processing methods: One method is to determine that the first and second driving modules are connected and both form current loops based on the power parameters of the charging device being greater than the power parameters of the driving module connected to the charging device; this connection state can be called the second connection state. The other method is to determine that the first and second driving modules are disconnected based on the power parameters of the charging device being less than or equal to the power parameters of the driving module connected to the charging device; this connection state can be called the third connection state.

[0107] In this embodiment, when the output power of the charging device is greater than the operating power of the drive module, the power transmitted by one DC charging module can be transferred to the battery through two drive modules. Thus, with each of the two drive modules connected to a DC charging module, the two drive modules can be connected, allowing the current output by the DC charging module to be shunted, and then the power is transferred to the battery through the two drive modules respectively, enabling high-power fast charging of the battery. In this second connection state, where the two drive modules are connected and both the first and second drive modules participate in charging, a high-power (which can be understood as a power greater than the operating power of the drive module) charging device can be used to charge the battery, achieving a faster charging speed.

[0108] When the output power of the charging device is less than or equal to the operating power of the drive module, the power transmitted by one DC charging module can be transferred to the battery with a larger current through a single drive module. Thus, when a DC charging module is connected via a single drive module, the two drive modules can be disconnected, allowing the current output from the DC charging module to be concentrated into a single current loop. This allows for a larger current to be transferred to the battery through a single drive module to charge it. This third connection state, where the two drive modules are disconnected and only one drive module participates in charging, enables high-current power transfer, increasing the current in the current loop and maximizing charging efficiency.

[0109] Based on the aforementioned second connection state, the step of controlling the formation of a current loop between the charging device, the drive module, and the power supply module may include, as follows: Figure 8 The processing flow shown is as follows: Step S21b, control the first switch K1 to be turned on, and control the bridge arm in the first drive module and the second drive module connected to the positive terminal of the power supply module to be turned on; Step S22b, control the positive terminal of the DC charging module connected to the charging device to be turned on between the first drive module and the second drive module respectively, and control the negative terminal of the DC charging module connected to the charging device to be turned on between the negative terminal of the power supply module, thus forming a third current loop.

[0110] like Figure 4 As shown, based on the indication of the second connection state, when only one DC charging module is connected to the charging device and the output power of the charging device is greater than the operating power of the drive module, the first switch K1 can be controlled to conduct, thereby achieving the conduction of the neutral line between the first motor and the second motor, so that the two drive modules can be connected respectively through the DC charging module connected to the charging device. Furthermore, the positive terminal of the DC charging module connected to the charging device is controlled to conduct between the first drive module and the second drive module, and the negative terminal of the DC charging module connected to the charging device is controlled to conduct between the negative terminal of the power supply module, forming a third current loop.

[0111] Specifically, taking the example of the first DC charging module being connected to the charging device while the second DC charging module is not connected to the charging device, when the output power of the charging device is greater than the working power of the drive module, the first switch K1 can be turned on, and transistors V11 to V16, the second switch K2 between the positive terminal of the first DC charging module and the first motor, and the third switch K3 between the negative terminal of the first DC charging module and the first motor controller can be closed respectively. Then the first DC charging module, the first drive module, the second drive module and the battery can be connected in series to form a third current loop.

[0112] Based on the aforementioned third connection state, the steps for controlling the formation of a current loop between the charging device, the drive module, and the power supply module may include, as follows: Figure 9 The processing flow shown is as follows: Step S21c: Control the first switch K1 to open and control the positive terminal of the DC charging module connected to the charging device to conduct between the positive terminal of the power supply module; Step S22c: Control the negative terminal of the DC charging module connected to the charging device to conduct between the negative terminal of the power supply module, forming a fourth current loop.

[0113] like Figure 4 As shown, based on the indication of the third connection state, when only one DC charging module is connected to the charging device and the output power of the charging device is less than the operating power of the drive module, the first switch K1 can be controlled to open, thereby disconnecting the neutral line between the first motor and the second motor, so that a drive module can be connected through the DC charging module connected to the charging device. Furthermore, the positive terminal of the DC charging module connected to the charging device is controlled to conduct with the first drive module, and the negative terminal of the DC charging module connected to the charging device is controlled to conduct with the negative terminal of the power supply module, forming a fourth current loop.

[0114] Specifically, taking the example of the first DC charging module being connected to the charging device while the second DC charging module is not connected to the charging device, when the output power of the charging device is less than the working power of the drive module, the first switch K1 can be controlled to open, and transistors V11 to V13, the second switch K2 between the positive terminal of the first DC charging module and the first motor, and the third switch K3 between the negative terminal of the first DC charging module and the first motor controller can be closed respectively. Then the first DC charging module, the first drive module, and the battery can be connected in series to form a fourth current loop.

[0115] In some embodiments, the battery charging control method further includes a boost charging step, which may include the following steps: disconnecting the power supply module and the drive module in the control current loop, charging the motor inductor included in the drive module in the current loop through the charging device in the current loop; and restoring the connection between the power supply module and the drive module when the energy storage of the motor inductor meets the preset conditions, and boost charging the battery of the power supply module through the charging device and the motor inductor.

[0116] Boost charging can be understood as using a charging device with a voltage lower than the battery voltage to charge the battery and bring it to its rated voltage and capacity. The preset conditions for inductor energy storage can be set according to the actual energy storage of the inductor, such as reaching the maximum energy storage of the inductor, or 90% of the maximum energy storage, etc. This embodiment does not make specific limitations on this.

[0117] In practical applications, the voltage of the charging device may be higher or lower than the battery voltage. Especially with the rapid development of battery technology, battery voltages are becoming increasingly larger, while the charging device may not have kept pace with these advancements, potentially resulting in a situation where the charging device voltage is lower than the battery voltage. In this scenario, directly charging the battery using only the charging device may not result in the battery being fully charged. To address this issue, this embodiment incorporates the aforementioned boost charging steps. First, the drive control device is controlled to form a current loop for the motor inductor, consisting of the DC charging module and the drive module. After the motor inductor has stored energy, the drive control device is then controlled to form a current loop for the battery (which can be any of the aforementioned connection states). At this point, it can be considered that the charging device and the motor are simultaneously charging the battery, thus achieving the boost charging process.

[0118] Specifically, taking the first connection state as an example, such as Figure 4 The drive control device shown can, after forming the first current loop and the second current loop, first disconnect the upper bridge arm of the motor controller and close the lower bridge arm of the motor controller, that is, disconnect transistors V11-V13 and V21-V23, and close transistors V14-V16 and V24-V26, so that the first DC charging module and the first drive module form the first motor current loop, and the second DC charging module and the second drive module form the second motor current loop. After both motors are fully charged, transistors V11-V13 and V21-V23 are closed again, and transistors V14-V16 and V24-V26 are disconnected, so that the first DC charging module, the first drive module, and the battery form the first current loop, and the second DC charging module, the second drive module, and the battery form the second current loop, and the battery is charged based on the first current loop and the second current loop. When the motor inductor is fully discharged, the motor current loop can be re-formed to charge the motor inductor. After the motor inductor is fully charged, the battery current loop can be re-formed to charge the battery. More specifically, the switching on and off of transistors V11-V16 and V21-V26 can be controlled by inputting a PWM signal. In turn, the conduction time of the upper and lower bridge arms of the motor controller can be controlled by controlling the duty cycle of the PWM signal, thereby realizing the boost charging function.

[0119] In other embodiments, when only one DC charging module is connected to the charging device, it is possible to monitor in real time whether another DC charging module is also connected to the charging device. In this case, the battery charging control method may further include the following processing: when one of the first DC charging module and the second DC charging module is connected to the charging device, based on the detection that the DC charging module that is not connected to the charging device is also connected to the charging device, the connection status between the first DC charging module and the second DC charging module and the charging device is re-determined.

[0120] In practical applications, due to the long charging time, when one DC charging module is connected to the charging device, another DC charging module may also be connected during the charging process. When another DC charging module is connected, the connection status between the first and second DC charging modules and the charging device needs to be redefined to readjust the current loop and achieve higher charging efficiency. Therefore, the battery charging control device can monitor in real time whether another DC charging module is also connected to the charging device. If it detects that a DC charging module that was not previously connected to the charging device is now connected, it will redefine the connection status between the first and second DC charging modules and the charging device, changing the current connection status to the first connection status.

[0121] In other embodiments, the vehicle controller can be used to control... Figure 3 and 4 The drive control device shown is used for control, based on the joint control of the vehicle controller (VCU), battery management system (BMS), and motor controller (MCU) to realize the above-mentioned battery charging control method. The specific process is as follows: Figures 10-12 As shown, the following steps may be included:

[0122] 001) The vehicle controller is connected to the charging device;

[0123] 002) The vehicle controller identifies whether the battery and controller meet the charging conditions, such as whether the battery's state of charge (SOC) is <99%, whether the battery temperature is >0℃, and whether the vehicle controller is fault-free.

[0124] 003) The vehicle controller communicates with the charging device to confirm whether the voltage of the charging device is within the required range. If it is not within the required range, the process stops. If the voltage of the charging device is too high, it may burn out the battery and control components that are not resistant to high voltage.

[0125] 004) The vehicle controller checks the connection status between the charging device and the DC charging module to determine whether dual-gun charging is in progress; if so, it proceeds to... Figure 11 The dual-gun charging steps shown are steps 005-011 below; otherwise proceed to... Figure 12The single-gun charging steps shown are steps 012-020 below;

[0126] Dual-gun charging steps:

[0127] 005) Disconnect the first switch K1;

[0128] 006) The BMS and the charging device enter the charging handshake process to set the charging current and charging voltage;

[0129] 007) The BMS closes the pre-charge switch K8 in the high-voltage box, the positive main control switch K71 of the first current circuit, and the positive main control switch K72 of the second current circuit to complete the pre-charge. Then it closes the negative main control switch K9 and opens the pre-charge switch K8 to complete the high-voltage power-on.

[0130] 008) After the handshake is completed, the BMS closes the third switch K3 connected to the negative terminal of the first DC charging module and the fifth switch K5 connected to the negative terminal of the second DC charging module through the VCU;

[0131] 009) Then close the second switch K2 connected to the positive terminal of the first DC charging module and the fourth switch K4 connected to the positive terminal of the second DC charging module;

[0132] 010) After the charging device outputs voltage, the two motor controllers perform boost charging.

[0133] 011) Real-time monitoring of vehicle controller system fault status.

[0134] Single-gun charging steps:

[0135] 012) Determine whether the output power of the charging device is greater than the charging power allowed by a single motor control. If yes, proceed to steps 013 and 020-021; if no, proceed to steps 014-021.

[0136] 013) Close the first switch K1, and then execute steps 006 to 010;

[0137] 014) Disconnect the first switch K1;

[0138] 015) The BMS and the charging device enter the charging handshake process to set the charging current and charging voltage;

[0139] 016) The BMS closes the pre-charge switch K8 in the high-voltage box, the positive main control switch K71 of the first current circuit, and the positive main control switch K72 of the second current circuit to complete the pre-charge. Then it closes the negative main control switch K9 and opens the pre-charge switch K8 to complete the high-voltage power-on.

[0140] 017) After the handshake is completed, the BMS closes the third switch K3 connected to the negative terminal of the first DC charging module or the fifth switch K5 connected to the negative terminal of the second DC charging module through the VCU (automatically selecting based on which DC charging module is connected to the charging device).

[0141] 018) Then close the second switch K2 connected to the positive terminal of the first DC charging module and the fourth switch K4 connected to the positive terminal of the second DC charging module (automatically selects which DC charging module is connected to the charging device).

[0142] 019) After the charging device outputs voltage, the individual motor controller performs boost charging (automatically selected based on which DC charging module is connected to the charging device).

[0143] 020) Real-time monitoring of vehicle controller system fault status;

[0144] 021) Monitor in real time whether another DC charging module is also connected to the charging device. If yes, proceed to step 014 (and execute subsequent steps); if no, proceed to the dual-gun charging steps described above.

[0145] Then, regardless of whether it is a dual-gun charging step or a single-gun charging step, after completing the boost charging step, the following steps 022 to 025 shall be performed:

[0146] 022) Monitor the battery in real time during the charging process to see if charging is complete;

[0147] 023) If the battery is fully charged, disconnect the corresponding high-voltage contactor, namely the first switch K1, the second switch K2, the third switch K3, the fourth switch K4 and the fifth switch K5;

[0148] 024) The BMS sequentially disconnects the negative main control switch K9, the positive main control switch K71, and the positive main control switch K72 to complete the high-voltage power-off.

[0149] 025) The process ends.

[0150] It is understood that the description of the various embodiments above tends to emphasize the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, these will not be repeated here.

[0151] In summary, the battery charging control method provided in this application determines the battery connection state based on the different connection states between the two DC charging modules and the charging device. Then, based on the connection state, the drive control device is controlled to form different current loops between the charging device and the power supply module. Different drive modules participate in charging in each current loop. When both drive modules in the current loop participate in charging, the battery can be charged simultaneously using two current loops, thereby meeting the high-power fast charging requirements of the battery. This allows for fast and efficient charging of the battery in the power supply module, effectively reducing the battery charging time.

[0152] Based on the same concept as the above-described battery charging control method, this application also provides a battery charging control device for implementing the above-described battery charging control method, such as... Figure 13 As shown, the device includes:

[0153] A connection status determination module is used to determine the connection status between the first DC charging module and the second DC charging module and the charging device.

[0154] The current loop control module is used to control the formation of the current loop between the charging device, the first drive module, and the second drive module based on the connection status.

[0155] It is understood that the battery charging control device provided in this embodiment is used to execute the above-described battery charging control method, and therefore can at least achieve the beneficial effects that the above-described battery charging control method can achieve, which will not be elaborated here.

[0156] This application also provides an electronic device for performing the above-described battery charging control method. Please refer to... Figure 14 This illustrates a schematic diagram of an electronic device provided by some embodiments of this application. For example... Figure 14 As shown, the electronic device 8 includes: a processor 800, a memory 801, a bus 802 and a communication interface 803. The processor 800, the communication interface 803 and the memory 801 are connected through the bus 802. The memory 801 stores a computer program that can run on the processor 800. When the processor 800 runs the computer program, it executes the battery charging control method provided in any of the foregoing embodiments of this application.

[0157] The memory 801 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this device network element and at least one other network element is achieved through at least one communication interface 803 (which can be wired or wireless), such as the Internet, wide area network, local area network, metropolitan area network, etc.

[0158] Bus 802 can be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. The memory 801 is used to store programs. After receiving execution instructions, the processor 800 executes the program. The battery charging control method disclosed in any of the aforementioned embodiments of this application can be applied to the processor 800, or implemented by the processor 800.

[0159] The processor 800 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of the processor 800 or by instructions in software form. The processor 800 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 801. Processor 800 reads the information in memory 801 and, in conjunction with its hardware, completes the steps of the above method.

[0160] The electronic device provided in this application embodiment and the battery charging control method provided in this application embodiment are based on the same inventive concept and have the same beneficial effects as the methods they adopt, operate or implement.

[0161] This application also provides a computer-readable storage medium corresponding to the battery charging control method provided in the foregoing embodiments. Please refer to... Figure 15 The computer-readable storage medium shown is an optical disc 30, on which a computer program (i.e., a program product) is stored. When the computer program is run by a processor, it executes the battery charging control method provided in any of the aforementioned embodiments.

[0162] It should be noted that examples of computer-readable storage media may also include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical and magnetic storage media, which will not be elaborated here.

[0163] The computer-readable storage medium provided in this application embodiment and the battery charging control method provided in this application embodiment are based on the same inventive concept and have the same beneficial effects as the methods adopted, run or implemented by the application stored therein.

[0164] This application also provides a computer program product corresponding to the battery charging control method provided in the foregoing embodiments, including a computer program that is executed by a processor to implement the battery charging control method described above.

[0165] The computer program product provided in this application embodiment is based on the same inventive concept as the battery charging control method provided in this application embodiment, and has the same beneficial effects as the method implemented by the computer program being executed by a processor.

[0166] Those skilled in the art will understand that in the methods described above in specific embodiments, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined based on its function and possible internal logic.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drive control device, characterized in that, include: The system comprises a first drive module, a second drive module, a first DC charging module, a second DC charging module, and a first switch; The first switch is disposed between the first drive module and the second drive module; The two terminals of the first DC charging module are respectively connected to the first motor and the first motor controller of the first drive module, and the two terminals of the second DC charging module are respectively connected to the second motor and the second motor controller of the second drive module. The first switch is located on the neutral line between the first motor and the second motor; the positive terminal of the first DC charging module is connected between the neutral point of the first motor and the first switch, and the negative terminal of the first DC charging module is connected to the negative terminal of the first drive module. The positive terminal of the second DC charging module is connected between the neutral point of the second motor and the first switch, and the negative terminal of the second DC charging module is connected to the negative terminal of the second drive module. The first switch is configured to open when both the first DC charging module and the second DC charging module are connected to a charging device; to close when one of the first DC charging module and the second DC charging module is connected to a charging device and the power parameter of the charging device is greater than the power parameter of the drive module connected to the charging device; and to open when one of the first DC charging module and the second DC charging module is connected to a charging device and the power parameter of the charging device is less than or equal to the power parameter of the drive module connected to the charging device.

2. The drive control device as described in claim 1, characterized in that, A second switch is provided between the first DC charging module and the first motor, and a third switch is provided between the first DC charging module and the first motor controller in the first drive module. A fourth switch is provided between the second DC charging module and the second motor, and a fifth switch is provided between the second DC charging module and the second motor controller in the first drive module.

3. An electrical device, characterized in that, It includes a power supply module and a drive control device as described in any one of claims 1-2, wherein the first drive module and the second drive module are connected in parallel between the positive and negative terminals of the power supply module.

4. The electrical appliance as described in claim 3, characterized in that, The power supply module includes a first battery and a second battery connected in parallel, and a sixth switch is provided between the positive terminal of the first battery and the positive terminal of the second battery.

5. The electrical appliance as described in claim 3, characterized in that, The power supply module includes a battery and a main control device; The main control device includes a positive terminal branch and a negative terminal branch. The positive terminal branch is connected to the positive terminal of the battery, the positive terminal of the first drive module, and the positive terminal of the second drive module, respectively. The negative terminal branch is connected to the negative terminal of the battery, the negative terminal of the first drive module, and the negative terminal of the second drive module, respectively. A precharge control component is connected to either the positive terminal branch or the negative terminal branch.

6. A battery charging control method, characterized in that, Applied to the drive control device according to any one of claims 1-2, or the electrical device according to any one of claims 3-5, the method comprises: Determine the connection status between the first DC charging module and the second DC charging module and the charging device; Based on the connection state, a current loop is formed between the charging device, the first driving module, and the second driving module. Based on the connection state, controlling the formation of a current loop between the charging device, the first driving module, and the second driving module includes: detecting that one of the first DC charging module and the second DC charging module is connected to the charging device; determining the driving module that forms the current loop among the first driving module and the second driving module based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device; and controlling the formation of a current loop between the charging device and the driving module based on the driving module that forms the current loop. Wherein, based on the fact that the power parameters of the charging device are greater than the power parameters of the driving module connected to the charging device, it is determined that the first driving module and the second driving module are connected, and both the first driving module and the second driving module form a current loop.

7. The method as described in claim 6, characterized in that, The step of controlling the formation of a current loop between the charging device, the first driving module, and the second driving module based on the connection state includes: Upon detecting that both the first DC charging module and the second DC charging module are connected to a charging device, the first switch is controlled to open, thus forming a first current loop between the charging device and the first drive module, and a second current loop between the charging device and the second drive module.

8. The method as described in claim 6, characterized in that, The step of determining the driving module forming the current loop in the first driving module and the second driving module based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device includes: Based on the fact that the power parameters of the charging device are less than or equal to the power parameters of the driving module connected to the charging device, it is determined that the first driving module and the second driving module are disconnected, and the driving module connected to the DC charging module of the charging device forms a current loop.

9. The method according to any one of claims 6-8, characterized in that, The method further includes: The drive module and the power supply module in the current loop are disconnected, and the motor inductor is charged through the charging device; When the energy storage of the motor inductor meets the preset conditions, the drive module and the power supply module are restored to conduction, and the battery of the power supply module is boosted and charged through the charging device and the motor inductor.

10. The method according to any one of claims 6-8, characterized in that, The method further includes: If either the first DC charging module or the second DC charging module is connected to a charging device, and the DC charging module that is not connected to a charging device is also detected to be connected to a charging device, then the connection status between the first DC charging module and the second DC charging module and the charging device is redefined.

11. A battery charging control device, characterized in that, The battery charging control device is used to perform the method described in any one of 6-10, the device comprising: A connection status determination module is used to determine the connection status between the first DC charging module and the second DC charging module and the charging device. A current loop control module is used to control the formation of a current loop between the charging device, the first driving module, and the second driving module based on the connection state. The process of controlling the formation of a current loop between the charging device, the first driving module, and the second driving module based on the connection state includes: detecting that one of the first DC charging module and the second DC charging module is connected to a charging device; determining the driving module that forms the current loop between the first driving module and the second driving module based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device; and controlling the formation of a current loop between the charging device and the driving module based on the driving module forming the current loop. Wherein, if the power parameters of the charging device are greater than the power parameters of the driving module connected to the charging device, it is determined that the first driving module and the second driving module are connected, and both the first driving module and the second driving module form current loops.

12. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method as described in any one of claims 6-10.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by a processor to implement the method as described in any one of claims 6-10.

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