Driving control device, charging control method and device, equipment and storage medium

Abstract

The invention discloses a driving control device, a battery charging control method, device and equipment and a storage medium, and the driving control device comprises a first driving module, a second driving module, a first DC charging module, a second DC charging module and a first switch. The first switch is arranged between the first driving module and the second driving module; two electrode ends 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 ends 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 charging efficiency is higher, and the charging speed is higher.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a drive control device, a battery charging control method, a device, a device and a storage medium. Background Art

[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. In order to further enhance the performance of batteries, dual-motor based drive control devices are becoming more and more popular.

[0003] The dual-motor drive control device helps to increase the battery life, but also requires a battery with a higher rated voltage to support it. High-voltage batteries put forward higher requirements on charging efficiency. The current drive control device still has the problems of low charging efficiency and long charging time.

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

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

[0006] In a first aspect, an embodiment of the present application provides a drive control device, comprising: 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 arranged between the first driving module and the second driving module;

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

[0009] The drive control device provided in the embodiment of the present application can disconnect the first switch when both DC charging modules are connected to the charging device, and each DC charging module is connected to a driving module respectively to form a current loop. The two current loops can charge the inductance of the motor and quickly charge the battery connected to the driving module. When one DC charging module is connected to the charging device, if the output power of the charging device is greater than the transmission power of the driving module, the first switch can be closed, and the two driving modules are connected. Two current loops can also be formed by the two driving modules, which can also achieve high-power fast charging, effectively reduce the charging time, and improve the user's experience satisfaction with the electrical device.

[0010] In some embodiments, a first switch is disposed on a 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 driving 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 driving module.

[0012] In some embodiments, a second switch is provided between the first DC charging module and the first motor, a third switch is provided between the first DC charging module and the first motor controller in the first driving 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 driving module. In the case of preparing for charging, the driving module involved in charging can be determined according to the connection status between the DC charging module and the charging device, and the corresponding switches are closed in sequence to form a corresponding current loop, so as to better realize the charging control process of the driving control device.

[0013] In a second aspect, an embodiment of the present application provides an electrical device, comprising a power supply module and the drive control device described in the first aspect, and the first drive module and the second drive module are connected in parallel between the positive terminal and the negative terminal 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 terminal of the first battery and the positive terminal of the second battery. This can make the application of the drive control device provided in the embodiment of the present application more extensive and the charging control process more flexible.

[0015] In some embodiments, the power supply module includes a battery and a main control device, and the main control device is arranged 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, and the positive terminal branch is respectively 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; the negative terminal branch is respectively 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; and a pre-charge control component is connected to any one of the positive terminal branch and the negative terminal branch. In this way, the main control device can be used to control the conduction and disconnection between the local circuits of the drive control device to realize the various functions of the drive control device, such as but not limited to the power supply function, the self-heating function, the preheating function, and the safety protection function of the circuit. Specifically, the main control device can include but is not limited to contactors, relays, fuses, resistors, sensors, high-voltage wiring harnesses, and high-voltage connectors.

[0016] In a third aspect, an embodiment of the present application provides a battery charging control method, which is applied to the drive control device described in the first aspect and the power-consuming device described in the second aspect, and the method includes:

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

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

[0019] The battery charging control method provided in the embodiment of the present application first determines the connection status between the two DC charging modules and the charging device, and then controls the drive control device to form different current loops between the charging device and the power supply module based on the connection status. The drive modules involved in the charging in each current loop are different. When both drive modules in the current loop participate in the charging, two current loops can be used to charge the battery at the same time, thereby meeting the high-power fast charging requirements of the battery, and the battery of the power supply module can be charged quickly and efficiently, effectively reducing the charging time of the battery.

[0020] In some embodiments, the control of forming a current loop between the charging device, the first driving module and the second driving module based on the connection state includes: detecting that the first DC charging module and the second DC charging module are both connected to a charging device, 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. Compared with the charging method of one DC charging module, the first connection state uses two DC charging modules to charge the battery at the same time, which can significantly improve the charging efficiency of the battery.

[0021] In some embodiments, the 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 driving module and the second driving module based on the power parameter of the charging device and the power parameter 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. In view of the fact that the output power of the charging device may be greater than the working power of the driving module, or may be less than or equal to the working power of the driving module, this embodiment determines the specific driving module that forms the current loop among the first driving module and the second driving module based on the power parameter of the charging device and the power parameter 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, so as to achieve more scientific charging strategy control and maximize charging efficiency.

[0022] In some embodiments, the determining of the driving module that forms the current loop among the first driving module and the second driving module based on the power parameter of the charging device and the power parameter of the driving module connected to the charging device includes: determining 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, based on the power parameter of the charging device being greater than the power parameter of the driving module connected to the charging device. When the power parameter of the charging device is greater than the power parameter of the driving module connected to the charging device, the first driving module and the second driving module are controlled to be connected, and both the first driving module and the second driving module form a current loop with the charging device, so that a high-power charging device can be used to charge the battery, achieving a faster charging speed.

[0023] In some embodiments, the determining of the driving module that forms the current loop among the first driving module and the second driving module based on the power parameter of the charging device and the power parameter of the driving module connected to the charging device includes: determining 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 is connected to form the current loop based on the power parameter of the charging device being less than or equal to the power parameter of the driving module connected to the charging device. When the power parameter of the charging device is less than the power parameter of the driving module connected to the charging device, the first driving module and the second driving module are controlled to be disconnected, and only one driving module forms the current loop with the charging device, so that large current can be transmitted to increase the current of the current loop, thereby maximizing the charging efficiency and achieving more efficient charging efficiency.

[0024] In some embodiments, the battery charging control method further includes: controlling the power supply module and the drive module in the current loop to be disconnected, and charging the motor inductance included in the drive module in the current loop through the charging device in the current loop; when the motor inductance energy storage meets the preset conditions, controlling the power supply module and the drive module to be restored to conduction, and boost charging the battery of the power supply module through the charging device and the motor inductance. In this embodiment, the drive control device is first controlled to form a motor inductance current loop composed of a DC charging module and a drive module, and after the motor inductance energy storage is completed, the drive control device is controlled to form a battery current loop. At this time, it can be regarded as the charging device and the motor charging the battery at the same time to realize the battery boost charging process.

[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 detecting that the DC charging module that is not connected to the charging device is also connected to the charging device, re-determining the connection status between the first DC charging module and the second DC charging module and the charging device. In this way, when the other DC charging module 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 can be re-determined in time, and the current loop can be adjusted to achieve higher charging efficiency.

[0026] In a fourth aspect, an embodiment of the present application provides a battery charging control device, the battery charging control device comprising:

[0027] a connection status determination module, used to determine the connection status between the first DC charging module and the second DC charging module and a charging device;

[0028] The 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.

[0029] In a fifth aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.

[0030] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the program is executed by a processor to implement the method described in the first aspect.

[0031] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation method of the present application is listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

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

[0034] Figure 2 A schematic diagram of the framework structure of a drive control device provided in some embodiments of the present application;

[0035] Figure 3 A schematic diagram of the framework structure of a drive control device provided in some other embodiments of the present application;

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

[0037] Figure 5 Detailed structural diagram of the drive control device in other embodiments of the present application;

[0038] Figure 6 A flowchart of a battery charging control method provided in an embodiment of the present application;

[0039] Figure 7A specific flow chart of step S2 in the battery charging control method provided in some embodiments of the present application;

[0040] Figure 8 A specific flow chart of step S2 in the battery charging control method provided in some other embodiments of the present application;

[0041] Fig. 9 A specific flow chart of step S2 in the battery charging control method provided in some embodiments of the present application;

[0042] Fig.10 A processing logic diagram of a battery charging control method provided in some embodiments of the present application;

[0043] Fig.11 A schematic diagram of a specific flow chart of a double-gun charging step in the processing logic of a battery charging control method provided in some embodiments of the present application;

[0044] Fig.12 A schematic diagram of a specific flow chart of a single-gun charging step in the processing logic of a battery charging control method provided in some embodiments of the present application;

[0045] Fig.13 A schematic diagram of the structure of a battery charging control device provided in some embodiments of the present application;

[0046] Fig.14 A schematic diagram of the structure of an electronic device provided in some embodiments of the present application is shown;

[0047] Fig.15 A schematic diagram of a storage medium provided in some embodiments of the present application is shown. DETAILED DESCRIPTION

[0048] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the embodiments of the present application; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0050] In the description of the embodiments of the present application, “plurality” means more than two, unless otherwise clearly and specifically defined.

[0051] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0052] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0053] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0054] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0055] At present, from the perspective of market development, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0056] Although drive control devices have been widely used in new energy vehicles, it is well known that battery charging has always been an important constraint restricting the faster development of new energy vehicles. For power batteries, fast charging is still a technical difficulty that needs to be overcome by technicians in this field. Especially for batteries with higher voltage, at the same charging power, batteries with higher voltage often require longer charging time.

[0057] In the related art, a DC charging module can be provided for the drive control device, and the DC charging module can be connected to the charging device of the battery and the peripheral respectively, so as to charge the battery through the charging device. However, with the continuous development of battery technology and the continuous upgrading of the battery demand of electrical equipment, the battery capacity and voltage are designed to be higher and higher. The efficiency of charging the battery with a DC charging module is low, and it is increasingly unable to meet the battery demand of electrical equipment.

[0058] Based on the above considerations, the embodiment of the present application proposes a drive control device, which includes two drive modules and two DC charging modules, and a first switch is set between the two drive modules. The two drive modules and the two DC charging modules are connected one by one, and the two electrodes of the DC charging module are respectively connected to the motor and the motor controller of the drive module. In this way, when both DC charging modules are connected to the charging device, the first switch can be disconnected, and each DC charging module is connected to a drive module respectively, and a current loop is formed. The two current loops can charge the inductance of the motor and the battery connected to the drive module for fast charging. In the case where one DC charging module is 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, and the two drive modules are connected. Two current loops can also be formed by the two drive modules, and high-power fast charging can also be achieved, which can effectively reduce the charging time and improve the user's experience satisfaction with the electrical device.

[0059] The drive control device disclosed in the embodiment of the present application can be used, but not limited to, in the power battery system of electric equipment such as vehicles, ships or aircraft. The power supply system of the electric equipment can be composed of the drive control device disclosed in the embodiment of the present application. In this way, it is beneficial to improve the charging efficiency of the drive control device, reduce the charging time, further meet the fast charging requirements of the electric equipment, and thus improve the experience satisfaction of the users of the electric equipment.

[0060] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0061] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device in an embodiment of the present application.

[0062] Please refer to Figure 1 , Figure 1A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A drive control device is provided inside the vehicle 1000, and the drive control device includes a battery 100, and the battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, the battery 100 may be used as an operating power source for the vehicle 1000. The drive control device may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0063] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a 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 A schematic diagram of the structure of a drive control device provided in some embodiments of the present 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 arranged between the first drive module and the second drive module. The two electrode ends 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 electrode ends 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 regarded as the charging interface of the power battery, which is used to connect to the charging device, receive the power input by the charging device, and transmit it to the battery after passing through the driving module, so as to achieve the purpose of charging the battery. The first DC charging module and the second DC charging module can both adapt to charging devices with different voltages and powers, and adapt the output voltage and power to the driving module.

[0066] By adopting 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. The drive modules involved in charging in each current loop are different. When both drive modules in the current loop participate in charging, two current loops can be used to charge the battery at the same time, which can meet the battery's high-power fast charging requirements, thereby quickly and efficiently charging the battery of the power supply module, effectively reducing the battery charging time.

[0067] Specifically, the first switch K1 can be arranged on the neutral line between the first motor and the second motor. Thus, the first drive module and the second drive module can be turned on and off by setting a switch, 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. In this way, the positive terminals of the two DC charging modules can be connected to the two motors respectively, so that the two DC charging modules can charge the motor inductance, and then the two motors can charge the battery, so that the battery charging using the drive control device is more efficient and reliable.

[0069] Among them, the positive terminal of the driving module can be understood as the end close to the motor controller, that is, the end connected to the positive terminal of the battery. The negative terminal of the driving module can be understood as the end close to the motor, that is, the end connected to the negative terminal of the battery. Then the negative terminal of the DC charging module is connected to the negative terminal of the driving module, which is also equivalent to the negative terminal of the DC charging module being connected to the negative terminal of the battery.

[0070] It can be understood that the connection method of the two electrodes of the two DC charging modules mentioned above is only one implementation method of the embodiment of the present application, and the present embodiment is not limited to this. For example, when both driving 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 and 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 driving 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 driving module.

[0072] Among them, the settings of the second switch K2, the third switch K3, the fourth switch K4 and the fifth switch K5 are similar to the first switch K1, and can also be but not limited to high-voltage contactors, relays, etc., as long as the on and off of the second switch K2, the third switch K3, the fourth switch K4 and the fifth switch K5 are controlled, the on and off of the circuits between the first DC charging module and the first motor, between the first DC charging module and the first motor controller, between the second DC charging module and the second motor, and between the second DC charging module and the second motor controller can be realized respectively.

[0073] In practical applications, in order to further improve the safety and reliability of the current loop, such as Figure 3 As shown, switches can be set at both the positive and negative ends of the two DC charging modules, that is, a second switch K2 can be set between the positive end of the first DC charging module and the first motor, and a third switch K3 can be set between the negative end of the first DC charging module and the first motor controller. A fourth switch K4 can be set between the positive end of the second DC charging module and the second motor, and a fifth switch K5 can be set between the negative end of the second DC charging module and the second motor controller to respectively control the on and off of the current loop formed by the two DC charging modules. When preparing to charge, the driving module involved in charging can be determined according to the connection state between the DC charging module and the charging device, and the corresponding switches can be closed in sequence to form a corresponding current loop, so as to better realize the charging control process of the driving control device.

[0074] It can be understood that in this embodiment, the positive terminal of the DC charging module is connected to the motor, and the negative terminal of the DC charging module is connected to the motor controller, so the DC charging module, the motor and the motor controller can form a current loop for charging the motor inductance. The motor controller is connected between the positive and negative poles 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 close to the negative pole 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 is conductive with the motor controller, it also means that the DC charging module is conductive with the negative pole of the battery.

[0075] The embodiment of the present application also provides an electrical device, which includes the drive control device of any of the above-mentioned embodiments of the power supply module, and the first drive module and the second drive module are connected in parallel between the positive terminal and the negative terminal of the power supply module.

[0076] It is understandable that the power-consuming device may be a power battery system including the above-mentioned drive control device, or may be a power-consuming device using the power battery system, i.e. the above-mentioned electric toys, electric tools, battery vehicles, electric vehicles, ships, spacecraft, etc. And if the power-consuming device includes the above-mentioned drive control device, it can at least achieve the beneficial effects that the above-mentioned drive control device can achieve, which will not be elaborated here.

[0077] For the power supply module, it may include batteries, battery management system (BMS), and main control devices, such as Figure 3 As shown. The battery can be implemented as a power battery, including at least one battery pack, which 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 the battery operation (such as voltage, temperature, power and current, etc.), and exchange information with external devices such as the vehicle control unit to enable the battery to operate safely and reliably.

[0078] The above-mentioned main control device can be arranged 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 is respectively 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; the negative terminal branch is respectively 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. A pre-charge control component can be connected to any one of the positive terminal branch and the negative terminal branch. In this way, the main control device can be used to control the conduction and disconnection between the local circuits of the drive control device to realize the various functions of the drive control device, such as but not limited to the power supply function, the self-heating function, the preheating function, and the safety protection function of the circuit. Specifically, the main control device can specifically include but is not limited to contactors, relays, fuses, resistors, sensors, high-voltage wiring harnesses, and high-voltage connectors.

[0079] Specifically, Figure 4As shown, the positive terminal branch of the main control device can be provided with two positive main control switches, and the two positive main control switches are respectively connected to the positive terminal of the battery and a motor controller, and are respectively used to control the on and off between the battery and the two drive modules. The negative terminal branch of the main control device can be provided with a pre-charge control component, and a negative main control switch K9 connected in parallel with the pre-charge control component. The pre-charge control component can be used to control the drive control device to complete the high-voltage power-on process, and can specifically 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 controlled to be turned on, and the negative main control switch K9 can be turned off. When the voltage at both ends of the pre-charge voltage reaches the pre-charge voltage value, the pre-charge can be considered to be completed. Then the negative main control switch K9 can be controlled to be turned on, and the pre-charge switch K8 can be turned off to complete the high-voltage power-on process.

[0080] It is understandable that the present embodiment does not specifically limit the position of the main control switch and the pre-charge control component. Figure 5 As shown, a negative pole main control switch K7 is provided at the negative pole branch of the main control device, and the negative pole main control switch K7 can be connected to the negative pole of the battery and the motor controller respectively. Two groups of pre-charge control components are provided at the positive pole branch of the main control device, and positive pole main control switches K91 and K92 are respectively connected in parallel with the two pre-charge control components. The two groups of pre-charge control components can be recorded as a first pre-charge control component and a second pre-charge control component, and the two ends of the first pre-charge control component can be connected to the positive pole of the battery and the positive pole of the first drive module respectively, and the two ends of the second pre-charge control component can be connected to the positive pole of the battery and the positive pole 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 driving module and the second driving module, if 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 may include a second motor and a second motor controller. Wherein, the first motor controller and the second motor controller may be implemented using various types of switches. For example, it may be implemented by an inverter in a motor drive system, wherein the inverter may be implemented using a bridge arm circuit of an insulated gate bipolar transistor (IGBT). Specifically, the number of bridge arms of the bridge arm circuit is the same as the number of windings in the motor, and may be, but not limited to, three-phase, six-phase, etc. For example, the first motor and the second motor may both include three-phase motors, and the bridge arm circuit may include a three-phase bridge arm, which may include an A-phase bridge arm, a B-phase bridge arm, and a C-phase bridge arm, or may include a U-phase bridge arm, a V-phase bridge arm, and a W-phase bridge arm.

[0082] Each phase bridge arm has an upper bridge arm and a lower bridge arm, and each of the upper bridge arm and the lower bridge arm is provided with a switch unit. The specific structure of the switch unit can be but is not limited to the following: Figure 4 As shown, both include a transistor and a diode (such as V11 and D11) connected in parallel. When the current passing through the bridge arm is greater than the conduction threshold of the diode, the diode can be reversely conducted, so that the transistor can be protected from overcurrent. The diode can be, but is not limited to, a freewheeling diode. In the process of adjusting the battery charging control, when the current loop formed by the drive control device flows in from the cathode of the diode and flows out from the anode of the diode, when the bridge arm is turned on in this article, it can be understood as closing the transistor. When the current loop formed by the drive control device flows in from the anode of the diode and flows out from the cathode of the diode, when the bridge arm is turned on in this article, the transistor can be closed or not, and the current can flow through the freewheeling diode.

[0083] The first motor and the second motor may both include M-phase windings, multiple windings are connected in a common line, and have a common connection point, which may be called a neutral line, and the common connection point may be called a neutral point. And one end of each winding away from the neutral point is respectively connected to the connection point of the upper bridge arm and the lower bridge arm of a phase bridge arm. The battery pack, the M-phase bridge arm and the motor are connected in parallel, and the upper and lower bridge arm connection points of the M-phase bridge arm are respectively connected to the M-phase windings of the M-phase motor in a one-to-one correspondence.

[0084] It is understandable that the first motor and the second motor are not limited to three-phase motors, but can also be six-phase or twelve-phase motors. Correspondingly, the first motor controller and the second motor controller can also have six-phase bridge arms. The number of upper bridge arms and the number of lower bridge arms turned on each time can be the same or different, and this embodiment does not specifically limit this.

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

[0086] In other embodiments, Figure 5 As shown, the power supply module may include a first battery and a second battery in parallel, and a sixth switch K6 is provided between the positive terminal of the first battery and the positive terminal of the second battery. That is, the present embodiment can also be applied to the dual-battery scenario. When the sixth switch K6 is turned on, the first battery and the second battery are connected, and the first battery and the second battery can be charged simultaneously through the DC charging module. When one of the batteries has sufficient power, the sixth switch K6 can be disconnected, and only the one of the two batteries with insufficient power can be charged. In this way, the application of the drive control device provided in the embodiment of the present application can be made more extensive, and the charging control process can be made more flexible.

[0087] The sixth switch K6 may be configured similarly to the first switch K1 to the fifth switch K5, and may also be, but not limited to, a high-voltage contactor, a relay, etc., as long as the on / off between the first battery and the second battery can be controlled by controlling the on / off of the sixth switch K6.

[0088] like Figure 5 As shown, a sixth switch K6 can be provided between the positive terminal of the first battery and the positive terminal of the second battery. When two batteries need to be charged, if both driving modules participate in charging, two current loops can be formed respectively by the two driving modules. Then, the sixth switch K6 can be controlled to be disconnected, so that the two current loops can charge the first battery and the second battery one by one. If only one of the two driving modules participates in charging, the drive control device can form one current loop. Then, the sixth switch K6 can be controlled to be turned on, so that the one current loop can charge the first battery and the second battery at the same time.

[0089] It should be noted that, in the present embodiment, a negative pole main control switch K7 is provided in the negative pole branch of the main control device, one end of the negative pole main control switch K7 is connected to the negative pole of the first battery and the second battery, and the other end is connected to the motor controller. Two groups of pre-charge control components are provided in the positive pole branch of the main control device, and positive pole main control switches K91 and K92 are respectively connected in parallel with the two pre-charge control components. The two groups of pre-charge control components can be recorded as a first pre-charge control component and a second pre-charge control component. The two ends of the first pre-charge control component can be respectively connected to the positive pole of the battery and the positive pole of the first drive module, and the two ends of the second pre-charge control component can be respectively connected to the positive pole of the battery and the positive pole of the second drive module. 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 the present application, and the present embodiment is not limited thereto. For the dual-battery drive control device, it may also be as follows Figure 4 As shown, a positive main control switch is arranged at the positive end branch of the main control device, two groups of pre-charge control components are arranged at the negative end branch of the main control device, and negative main control switches are respectively connected in parallel with the two pre-charge control components.

[0090] In addition, it can be 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 one battery. The specific structure can refer to the above embodiment and will not be described here.

[0091] Based on the same concept as the above-mentioned drive control device, this embodiment also provides a battery charging control method, which is applied to the above-mentioned drive control device or power-consuming device, such as Figure 6 As shown, the method comprises the following steps:

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

[0093] The execution subject of the battery charging control method can be any one of the motor controller and the vehicle controller, or can be completed by the two controllers together, or can be a specially set battery charging control device, which is not specifically limited in this embodiment. For ease of understanding, this embodiment takes the battery charging control device as an example for specific description.

[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 to the battery charging control device indicating that the charging device has been connected, such as a high-level signal. That is, if the battery charging control device receives a connection signal sent by 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 it can be determined which DC charging module is connected to the charging device based on the sending end information of the connection signal.

[0095] Step S2, based on the connection status, controlling to form a current loop between the charging device, the first driving module and the second driving module.

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

[0097] In some embodiments, the above 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 can be called a first connection state, the first switch can be controlled to disconnect, and 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 can be formed.

[0098] In practical applications, when the battery charging control device detects that both DC charging modules are connected to the charging device according to the received connection signal, it can be determined that the battery is charged by the two DC charging modules respectively, and the two driving modules can be connected to the two DC charging modules one by one to form two independent current loops. Based on the charging logic, the two driving modules can be controlled to be disconnected, that is, the first switch K1 is disconnected, and the first driving module and the second driving module form their own current loops respectively. Compared with the charging method of one DC charging module, using two DC charging modules to charge the battery at the same time can significantly improve the charging efficiency of the battery.

[0099] Based on the first connection state, the step of controlling the formation of a current loop between the charging device, the driving module and the power supply module may include: Figure 7 The processing flow shown is as follows: step S21a, controlling the first switch K1 to be disconnected, and the bridge arms connected to the positive end of the power supply module in the first drive module and the second drive module to be turned on; step S22a, controlling the positive end of the first DC charging module to be turned on with the first motor, and the negative end of the first DC charging module to be turned on with the negative end of the power supply module, to form a first current loop; step S23a, controlling the positive end of the second DC charging module to be turned on with the second motor, and the negative end of the second DC charging module to be turned on with the negative end of the power supply module, to form 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 be disconnected to disconnect 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 controlled to be turned on respectively, so that the drive module and the battery are turned on. Then, the positive terminal of the first DC charging module and the first motor are controlled to be turned on, and the negative terminal of the first DC charging module and the negative terminal of the power supply module are controlled to be turned on respectively; and the negative terminal of the second DC charging module and the negative terminal of the power supply module are controlled to be turned on. Then the first DC charging module, the first driving module and the battery can be connected in series to form a first current loop, and the second DC charging module, the second driving module and the battery can be connected in series to form a second current loop.

[0101] Specifically, the first switch K1 can be disconnected, and transistors V11 to V13, as well as 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, so that the first DC charging module, the first drive module and the battery can be connected in series to form a first current loop. Then, transistors V14 to V16, the fourth switch K4 between the positive terminal of the second DC charging module and the second motor, and the fifth switch K5 between the negative terminal of the second DC charging module and the second motor controller can be closed respectively, so that 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 controlled to be turned on, or multiple bridge arms can be controlled to be turned on. This embodiment can control all three bridge arms to be turned on to improve the power transmission capacity of the motor controller.

[0103] In other embodiments, the above-mentioned 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 status may also 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, and 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 that forms the current loop.

[0104] The power parameter may include a power value, or may include parameters such as voltage and current that can be used to calculate the power value. The output power value of the drive module is often determined by the motor controller with a smaller power value, so the power parameter 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 the working power of the driving module, or may be less than or equal to the working power of the driving module. In the case where the output power of the charging device is greater than the working power of the driving module, the power can be transmitted separately through the two driving modules to achieve a faster charging speed. In the case where the output power of the charging device is less than or equal to the working power of the driving module, only one driving module can be used for power transmission to increase the current of the current loop, thereby maximizing the charging efficiency. Therefore, when the battery charging control device detects that only one DC charging module is connected to the charging device according to the received connection signal, it can first obtain the output power of the charging device, and based on the power parameters of the charging device and the power parameters of the driving module connected to the charging device, determine the specific driving module that forms the current loop in the first driving module and the second driving module, so as to achieve more scientific charging strategy control and maximize the charging efficiency.

[0106] Specifically, the above-mentioned step of determining the driving module that forms the current loop among the first driving module and the second driving module based on the power parameter of the charging device and the power parameter of the driving module connected to the charging device may specifically include the following two processing methods: one is that based on the power parameter of the charging device being greater than the power parameter 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, and this connection state may be referred to as the second connection state. The other is that based on the power parameter of the charging device being less than or equal to the power parameter 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, and this connection state may be referred to as the third connection state.

[0107] In this embodiment, when the output power of the charging device is greater than the working power of the driving module, the power transmitted by a DC charging module can be transmitted to the battery through two driving modules. In this way, when the two driving modules are respectively connected to a DC charging module, the two driving modules can be connected so that the current output by the DC charging module can be shunted, and then the power is transmitted to the battery through the two driving modules respectively, so as to charge the battery quickly with high power. In this way, by adopting the second connection state in which the two driving modules are connected and the first driving module and the second driving module both participate in charging, a high-power (which can be understood as a greater power than the working power of the driving 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 working power of the driving module, the power transmitted by a DC charging module can be transmitted to the battery through a driving module with a larger current. In this way, when the DC charging module is connected through a driving module, the two driving modules can be disconnected so that the current output by the DC charging module can be concentrated into a current loop, and the power can be transmitted to the battery through a driving module with a larger current to charge the battery. In this way, by adopting the third connection state in which the two driving modules are disconnected and only one driving module participates in charging, large current power transmission can be performed to increase the current of the current loop, thereby maximizing the charging efficiency and achieving more efficient charging efficiency.

[0109] Based on the second connection state, the step of controlling the formation of a current loop between the charging device, the driving module and the power supply module may include: Figure 8 The processing flow shown is as follows: step S21b, controlling the first switch K1 to be turned on, and the bridge arms connected to the positive end of the power supply module in the first drive module and the second drive module to be turned on; step S22b, controlling the positive end of the DC charging module connected to the charging device to be respectively turned on between the first drive module and the second drive module, and controlling the negative end of the DC charging module connected to the charging device to be turned on between the negative end of the power supply module, to form 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 working power of the driving module, the first switch K1 can be controlled to be turned on to realize the conduction of the neutral line between the first motor and the second motor, so as to connect the two driving modules respectively through the DC charging module connected to the charging device. And the positive terminal of the DC charging module connected to the charging device is controlled to be respectively conducted with the first driving module and the second driving module, and the negative terminal of the DC charging module connected to the charging device is controlled to be conducted with the negative terminal of the power supply module, so as to form a third current loop.

[0111] Specifically, taking the case where the first DC charging module is connected to the charging device and the second DC charging module is not connected to the charging device as an example, when the output power of the charging device is greater than the working power of the driving module, the first switch K1 can be controlled to be turned on, and transistors V11 to V16, as well as 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 are closed respectively, then the first DC charging module, the first driving module, the second driving module and the battery can be connected in series to form a third current loop.

[0112] Based on the third connection state, the step of controlling the formation of a current loop between the charging device, the driving module and the power supply module may include: Fig. 9 The processing flow shown is: step S21c, controlling the first switch K1 to be disconnected, and controlling the positive terminal of the DC charging module connected to the charging device to be connected to the positive terminal of the power supply module; step S22c; controlling the negative terminal of the DC charging module connected to the charging device to be connected to the negative terminal of the power supply module to form 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 working power of the driving module, the first switch K1 can be controlled to be disconnected to disconnect the neutral line between the first motor and the second motor, so as to connect a driving module through the DC charging module connected to the charging device. And the positive terminal of the DC charging module connected to the charging device is controlled to be connected to the first driving module, and the negative terminal of the DC charging module connected to the charging device is controlled to be connected to the negative terminal of the power supply module, so as to form a fourth current loop.

[0114] Specifically, taking the case where the first DC charging module is connected to the charging device and the second DC charging module is not connected to the charging device as an example, when the output power of the charging device is less than the working power of the driving module, the first switch K1 can be controlled to be disconnected, and the transistors V11 to V13, as well as 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 are closed respectively, then the first DC charging module, the first driving module and the battery can be connected in series to form a fourth current loop.

[0115] In some embodiments, the battery charging control method also includes a boost charging step, which may include the following steps: controlling the power supply module and the drive module in the current loop to be disconnected, and charging the motor inductance included in the drive module in the current loop through a charging device in the current loop; when the motor inductance energy storage meets preset conditions, controlling the power supply module and the drive module to resume conduction, and boost charging the battery of the power supply module through the charging device and the motor inductance.

[0116] Among them, boost charging can be understood as a process of charging the battery using a charging device with a voltage lower than the battery voltage, and making the battery reach the rated voltage and power. The preset conditions satisfied by the inductor energy storage can be set according to the actual energy storage of the inductor, for example, it can reach the maximum energy storage of the inductor, or 90% of the maximum energy storage, etc., which is not specifically limited in this embodiment.

[0117] In practical applications, the voltage of the charging device may be greater than the voltage of the battery, or it may be less than the voltage of the battery. Especially with the rapid development of battery technology, the designed battery voltage is getting higher and higher, and the charging device may not have time to be updated, then the voltage of the charging device may be less than the battery voltage. In this scenario, if only the charging device is used to directly charge the battery, the problem of insufficient battery charge may occur. To solve this problem, the present embodiment designs the above-mentioned boost charging step, that is, first control the drive control device to form a motor inductance current loop composed of a DC charging module and a drive module, and after the motor inductance energy storage is completed, control the drive control device to form a battery current loop (which can be any of the above-mentioned connection states). At this time, it can be regarded as the charging device and the motor charging the battery at the same time, and the boost charging process of the battery can be realized.

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

[0119] In some other embodiments, when only one DC charging module is connected to the charging device, it is possible to monitor in real time whether the other DC charging module is also connected to the charging device. 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 detecting 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 actual 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 to the charging device during the charging process. When the other DC charging module is also connected to the charging device, it is necessary to re-determine the connection status between the first DC charging module and the second DC charging module and the charging device to readjust the current loop to achieve higher charging efficiency. Therefore, the battery charging control device can monitor in real time whether the other DC charging module is also connected to the charging device, and when it is detected that the DC charging module that is not connected to the charging device is also connected to the charging device, it re-determines the connection status between the first DC charging module and the second DC charging module and the charging device, that is, changes the current connection status to the first connection status.

[0121] In other embodiments, the vehicle controller can Figure 3 and 4 The driving control device shown in the figure is controlled based on the joint control of the vehicle control unit (VCU), the battery management system (BMS) and the motor controller (MCU) to realize the above-mentioned battery charging control method. The specific process is as follows Figure 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 state of charge (SOC) is <99%, whether the battery temperature is >0°C, and whether the vehicle controller has no faults, etc.;

[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 not, the charging stops. If the voltage of the charging device is too high, the battery and control components that are not resistant to high voltage may be burned.

[0125] 004) The vehicle controller determines whether dual-gun charging is performed based on the connection status between the charging device and the DC charging module. If so, it enters Fig.11 The dual-gun charging steps shown are steps 005 to 011 below; if otherwise, enter Fig.12The single-gun charging steps shown are steps 012 to 020 described below;

[0126] Dual gun charging steps:

[0127] 005) Turn off the first switch K1;

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

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

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

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

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

[0133] 011) The vehicle controller monitors system failure conditions in real time.

[0134] Single gun charging steps:

[0135] 012) Determine whether the output power of the charging device is greater than the charging power allowed by the single motor control. If so, execute step 013 and step 020 to step 021; if not, execute step 014 to step 021;

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

[0137] 014) Disconnect the first switch K1;

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

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

[0140] 017) After the handshake is completed, the BMS closes the third switch K3 connected to the negative pole of the first DC charging module or the fifth switch K5 connected to the negative pole of the second DC charging module through the VCU (automatically selected according to which DC charging module is connected to the charging device);

[0141] 018) Then close the second switch K2 connected to the positive pole of the first DC charging module and the fourth switch K4 connected to the positive pole of the second DC charging module (automatically selected according to which DC charging module is connected to the charging device);

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

[0143] 020) The vehicle controller monitors system failures in real time;

[0144] 021) Real-time monitoring of whether another DC charging module is also connected to the charging device. If so, enter step 014 (and execute subsequent steps); if not, enter the above-mentioned double-gun charging step.

[0145] Then, no matter it is the dual-gun charging step or the single-gun charging step, after the boost charging step is performed, the following steps 022 to 025 are performed:

[0146] 022) Real-time monitoring of whether the battery is fully charged during the charging process;

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

[0148] 024) BMS disconnects the negative electrode main control switch K9, the positive electrode main control switch K71 and the positive electrode main control switch K72 in sequence to complete the high voltage power-off;

[0149] 025)The process ends.

[0150] It can be understood that the above description of the various embodiments tends to emphasize the differences between the various embodiments, and the same or similar points can be referenced to each other. For the sake of brevity, they will not be repeated herein.

[0151] In summary, the battery charging control method provided in the embodiment of the present application determines the connection status of the battery based on the different connection statuses between the two DC charging modules and the charging device, and then controls the drive control device to form different current loops between the charging device and the power supply module based on the connection status. The drive modules involved in the charging in each current loop are different. When both drive modules in the current loop participate in the charging, two current loops can be used to charge the battery at the same time, thereby meeting the high-power and fast charging requirements of the battery, and the battery of the power supply module can be charged quickly and efficiently, effectively reducing the charging time of the battery.

[0152] Based on the same concept as the above-mentioned battery charging control method, the embodiment of the present application also provides a battery charging control device for implementing the above-mentioned battery charging control method, such as Fig.13 As shown, the device comprises:

[0153] A connection status determination module, 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 a current loop between the charging device, the first driving module and the second driving module based on the connection state.

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

[0156] The present application also provides an electronic device to execute the above-mentioned battery charging control method. Fig.14 , which shows a schematic diagram of an electronic device provided by some embodiments of the present application. Fig.14 As shown, the electronic device 8 includes: a processor 800, a memory 801, a bus 802 and a communication interface 803, and the processor 800, the communication interface 803 and the memory 801 are connected via the bus 802; the memory 801 stores a computer program that can be run on the processor 800, and when the processor 800 runs the computer program, it executes the battery charging control method provided in any of the aforementioned embodiments of the present application.

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

[0158] The bus 802 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The memory 801 is used to store programs, and the processor 800 executes the program after receiving an execution instruction. The battery charging control method disclosed in any implementation of the aforementioned embodiment of the present application may 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 the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 800. The above processor 800 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a readily available programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor to be executed, or the hardware and software modules in the decoding processor can be executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 801, and the processor 800 reads the information in the memory 801 and completes the steps of the above method in combination with its hardware.

[0160] The electronic device provided in the embodiment of the present application and the battery charging control method provided in the embodiment of the present application are based on the same inventive concept and have the same beneficial effects as the methods adopted, operated or implemented therein.

[0161] The present application also provides a computer-readable storage medium corresponding to the battery charging control method provided in the above embodiment. Fig.15 The computer-readable storage medium shown is a CD 30 on which a computer program (ie, a program product) is stored. When the computer program is run by a processor, the battery charging control method provided in any of the aforementioned embodiments will be executed.

[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 or magnetic storage media, which are not listed here one by one.

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

[0164] The embodiment of the present application further provides a computer program product corresponding to the battery charging control method provided in the aforementioned embodiment, including a computer program, which is executed by a processor to implement the aforementioned battery charging control method.

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

[0166] It can be understood by those skilled in the art that in the above method of the specific embodiment, the order of writing each step does not mean a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic. (Method embodiment)

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A drive control device, characterized in that: include: A first driving module, a second driving module, a first DC charging module, a second DC charging module and a first switch; The first switch is arranged between the first driving module and the second driving module; The two electrode ends of the first DC charging module are respectively connected to the first motor and the first motor controller of the first driving module, and the two electrode ends of the second DC charging module are respectively connected to the second motor and the second motor controller of the second driving module.

2. The drive control device according to claim 1, characterized in that: The first switch is disposed on a neutral line between the first motor and the second motor.

3. The drive control device according to claim 2, characterized in that: 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 driving 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 driving module.

4. The drive control device according to any one of claims 1 to 3, 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 driving 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 driving module.

5. An electrical device, characterized in that: It comprises a power supply module and the drive control device according to any one of claims 1 to 4, and the first drive module and the second drive module are connected in parallel between the positive terminal and the negative terminal of the power supply module.

6. The electrical device according to claim 5, 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.

7. The electrical device according to claim 5, 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 respectively 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; the negative terminal branch is respectively 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; and a pre-charging control component is connected to any one of the positive terminal branch and the negative terminal branch.

8. A battery charging control method, characterized in that: Applied to the drive control device according to any one of claims 1 to 4, and the power-consuming device according to any one of claims 5 to 7, the method comprises: Determining a connection status between the first DC charging module and the second DC charging module and a charging device; Based on the connection state, a current loop is controlled to be formed between the charging device, the first driving module and the second driving module.

9. The method according to claim 8, characterized in that The controlling, based on the connection state, to form a current loop between the charging device, the first driving module, and the second driving module comprises: It is detected that both the first DC charging module and the second DC charging module are connected to charging devices, the first switch is controlled to be disconnected, and 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 are formed.

10. The method according to claim 8, characterized in that The controlling, based on the connection state, to form a current loop between the charging device, the first driving module, and the second driving module comprises: Detecting that one of the first DC charging module and the second DC charging module is connected to a charging device, and determining a driving module that forms a current loop between the first driving module and the second driving module based on a power parameter of the charging device and a power parameter of a driving module connected to the charging device; Based on the driving module forming the current loop, control is performed to form a current loop between the charging device and the driving module.

11. The method according to claim 10, characterized in that The determining, based on the power parameter of the charging device and the power parameter of the driving module connected to the charging device, a driving module forming a current loop among the first driving module and the second driving module comprises: Based on the fact that the power parameter of the charging device is greater than the power parameter 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.

12. The method according to claim 10, characterized in that The determining, based on the power parameter of the charging device and the power parameter of the driving module connected to the charging device, a driving module forming a current loop among the first driving module and the second driving module comprises: Based on the fact that the power parameter of the charging device is less than or equal to the power parameter 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.

13. The method according to any one of claims 8 to 12, characterized in that: The method further comprises: Controlling the disconnection between the driving module and the power supply module in the current loop, and charging the motor inductance through the charging device; When the energy storage of the motor inductance meets the preset conditions, the conduction between the driving module and the power supply module is controlled to be restored, and the battery of the power supply module is boosted and charged through the charging device and the motor inductance.

14. The method according to any one of claims 8 to 12, characterized in that: The method further comprises: When one of the first DC charging module and the second DC charging module is connected to a charging device, based on detecting 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.

15. A battery charging control device, characterized in that: The device comprises: a connection status determination module, used to determine the connection status between the first DC charging module and the second DC charging module and a charging device; The 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.

16. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: The processor runs the computer program to implement the method according to any one of claims 8 to 14.

17. 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 according to any one of claims 8 to 14.

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