Power supply management system and power supply management method

Abstract

The present invention relates to the field of energy management technology, and discloses a power supply management system and a power supply management method. In the present invention, the power supply management system includes a controller. The present invention first determines the target charging circuit according to the received control signal through the controller, and the target charging circuit includes a fast charging circuit and a slow charging circuit, and then charges the device to be charged through the target charging circuit. The present invention determines the target charging circuit according to the received control signal, and can accurately obtain the charging circuit in the current scenario. Compared with the existing power supply that can only be supplied by the power grid or battery, the above method of the present invention can determine the corresponding charging method according to the target charging circuit, that is, whether to charge the device to be charged through the fast charging circuit or the slow charging circuit, thereby realizing charging the device to be charged while ensuring the normal and continuous operation of the device to be charged.

Description

Technical Field

[0001] The present invention relates to the technical field of energy management, and in particular to a power supply management system and a power supply management method. Background Art

[0002] For devices to be charged, real-time power supply is required to keep running. Taking electric excavators as an example, since the working power of electric excavators is large and the scenarios are relatively fixed, AC power\battery time-sharing or simultaneous power supply mode is usually adopted. According to the different power supply methods, it is divided into the following 3 types: separate battery power supply, separate grid power supply, and battery-grid hybrid power supply. However, the above three methods not only increase the cost of using the excavator, but also limit the working range of the excavator to the length of the cable connected to the grid, and reduce the excavator's ability to work sustainably. Therefore, how to achieve continuous operation of electrical equipment in scenarios where the capacity of the rechargeable battery is limited, the grid is unstable, or the grid is out of power has become a technical problem that needs to be solved urgently.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a power supply management system and a power supply management method, aiming to solve the technical problem of achieving continuous operation of electrical equipment in scenarios where the capacity of rechargeable batteries is limited, the power grid is unstable, or the power grid is out of power.

[0005] To achieve the above object, the present invention provides a power supply management system, which includes a controller;

[0006] The controller is used to determine a target charging circuit according to a received control signal, wherein the target charging circuit includes a fast charging circuit and a slow charging circuit;

[0007] The controller is also used to charge the device to be charged through the target charging circuit.

[0008] Optionally, the control signal includes an ignition key signal and / or a slow charge button signal and / or fault information.

[0009] Optionally, the controller is further configured to use the fast charging circuit as the target charging circuit when receiving the ignition key signal as on, the slow charging button signal as off, and no fault information;

[0010] The controller is further configured to use the slow charging circuit as a target charging circuit when receiving the ignition key signal that is off, the slow charging button signal that is on, and no fault information.

[0011] Optionally, the power supply management system further includes a distribution box, the fast charging circuit includes a rectifier feedback unit, and the slow charging circuit includes a charger;

[0012] The controller is further used to control the distribution box to only supply power to the rectifier feedback unit when the target charging circuit is a fast charging circuit, and to charge the device to be charged through the rectifier feedback unit;

[0013] The controller is further used to control the distribution box to only supply power to the charger when the target charging circuit is a slow charging circuit, and to charge the device to be charged through the charger.

[0014] Optionally, the controller is further configured to receive a first state signal fed back by the rectification and feedback unit;

[0015] The controller is further configured to adjust the output of the rectification feedback unit according to the first state signal when the target charging circuit is the fast charging circuit;

[0016] and / or

[0017] The controller is further configured to receive a second state signal fed back by the charger;

[0018] The controller is further configured to adjust the output of the charger according to the second state signal when the target charging circuit is the slow charging circuit.

[0019] Optionally, the power supply management system further includes: a motor controller and a battery pack;

[0020] The motor controller is used to control the operation of the motor in the device to be charged according to the electric energy output by the rectifier feedback unit and / or the electric energy stored in the battery pack;

[0021] The battery pack is used to store the electric energy output by the rectification and feedback unit;

[0022] The battery pack is also used to store the electric energy output by the charger.

[0023] Optionally, the controller is also used to receive the actual output torque of the motor fed back by the motor controller and the battery pack charging current fed back by the battery pack, and adjust the output current of the rectifier feedback unit according to the first state signal output by the rectifier feedback unit and / or the actual output torque of the motor and / or the battery pack charging current.

[0024] In addition, to achieve the above object, the present invention also proposes a power supply management method, the power supply management method comprising:

[0025] The controller determines a target charging circuit according to the received control signal, wherein the target charging circuit includes a fast charging circuit and a slow charging circuit;

[0026] The controller charges the device to be charged through the target charging circuit

[0027] Optionally, the control signal includes an ignition key signal and / or a slow charge button signal and / or fault information;

[0028] The controller determines a target charging circuit according to the received control signal, wherein the target charging circuit includes a fast charging circuit and a slow charging circuit, specifically comprising:

[0029] When the controller receives that the ignition key signal is on, the slow charge button signal is off, and there is no fault information, the controller uses the fast charge circuit as the target charge circuit;

[0030] When the controller receives that the ignition key signal is off, the slow charging button signal is on, and there is no fault information, the controller uses the slow charging circuit as the target charging circuit.

[0031] Optionally, the step of the controller charging the device to be charged through the target charging circuit specifically includes:

[0032] When the target charging circuit is a fast charging circuit, the controller controls the power distribution box to only supply power to the rectifier feedback unit in the fast charging circuit, and charges the device to be charged through the rectifier feedback unit;

[0033] When the target charging circuit is a slow charging circuit, the controller controls the distribution box to only supply power to the charger in the slow charging circuit, and charges the device to be charged through the charger.

[0034] In the present invention, the power supply management system includes a controller. The present invention first determines the target charging circuit according to the received control signal through the controller. The target charging circuit includes a fast charging circuit and a slow charging circuit, and then charges the device to be charged through the target charging circuit. The present invention determines the target charging circuit according to the received control signal, and can accurately obtain the charging circuit in the current scenario. Compared with the existing power supply that can only be supplied by the power grid or battery, the above method of the present invention can determine the corresponding charging method according to the target charging circuit, that is, whether to charge the device to be charged through the fast charging circuit or the slow charging circuit, thereby achieving charging of the device to be charged while ensuring the normal and continuous operation of the device to be charged. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a functional module diagram of the first embodiment of the power supply management system of the present invention;

[0036] Figure 2 This is a schematic diagram of the working mode of the device to be charged according to the present invention;

[0037] Figure 3 It is a functional module diagram of the second embodiment of the power supply management system of the present invention;

[0038] Figure 4 It is a functional module diagram of the third embodiment of the power supply management system of the present invention;

[0039] Figure 5 It is a flowchart of the first embodiment of the power supply management method of the present invention.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] The embodiment of the present invention provides a power supply management system, referring to Figure 1 , Figure 1 This is a functional module diagram of the first embodiment of the power supply management system of the present invention.

[0046] like Figure 1 As shown, in this embodiment, the power supply management system includes: a controller 10;

[0047] The controller 10 is used to determine a target charging circuit according to the received control signal, and the target charging circuit includes a fast charging circuit and a slow charging circuit;

[0048] It should be noted that the control signal is a signal received through the CAN bus. The control signal in this embodiment may specifically include an ignition key signal and / or a slow charging button signal and / or fault information.

[0049] The controller is also used to charge the device to be charged through the target charging circuit.

[0050] Further, the controller 10 is further configured to use the fast charging circuit as the target charging circuit when receiving the ignition key signal as on, the slow charging button signal as off, and no fault information;

[0051] It should be noted that the target charging circuit includes a fast charging circuit and a slow charging circuit, both of which are circuits that can charge the device to be charged.

[0052] Further, refer to Figure 2 , Figure 2 It is a schematic diagram of the working mode of the device to be charged of the present invention.

[0053] like Figure 2 As shown, the device to be charged first enters the power-on mode, at which time it waits for the CAN bus to wake up. After the power-on is completed, it enters the initialization mode. The initialization includes initializing I / 0, initializing communication, initializing storage, and initializing function code settings. If the initialization fails, the fault mode is performed. After the initialization is completed, it enters the system self-test mode. The system self-test includes AFE self-test, PDU test, OBC test, BMS wake-up and test, and five-in-one wake-up and test. If the self-test fails, it also needs to enter the fault mode. When the self-test is completed and there is no fault, it enters the waiting mode, that is, waiting for the electronic control unit (Electronic Control Unit, ECU) to send instructions. When the system fails during the waiting process, it also needs to enter the fault mode. After entering the fault mode, a fault prompt will be issued, and the device will shut down or limp. After the ignition key is turned off, it enters the shutdown mode. Depending on whether the charging button is pressed, it enters the sleep mode or the night charging mode. After the night charging is fully charged, it enters the sleep mode today. After exiting the night charging mode, charging stops. According to the ignition key command, the power grid condition and the BMS voltage condition, it is determined whether to enter the slow charging mode, the operating mode or the transition mode in the high-voltage working mode. The operating mode is the fast charging mode in this embodiment.

[0054] It is understandable that when the controller 10 receives an ignition key signal from the ECU that is on, a slow charge button signal that is off, and does not receive fault information in the initialization mode, the system self-check mode, and the waiting mode, the fast charge circuit is used as the target charging circuit.

[0055] The controller 10 is further configured to use the slow charging circuit as the target charging circuit when receiving the ignition key signal that is off, the slow charging button signal that is on, and no fault information.

[0056] It is understandable that when the controller 10 receives an ignition key signal from the ECU that is off, a slow charge button signal that is on, and does not receive fault information in the initialization mode, system self-check mode, or waiting mode, the controller 10 uses the slow charge circuit as the target charging circuit.

[0057] In a specific implementation, if the controller 10 receives fault information, it needs to enter a fault mode and can prompt the management personnel to handle it according to the fault information until the fault is restored. After the fault is restored, the controller 10 will not receive fault information and will continue with subsequent operations.

[0058] In this embodiment, the power supply management system includes a controller. In this embodiment, the controller first determines the target charging circuit according to the received control signal, and the target charging circuit includes a fast charging circuit and a slow charging circuit, and then charges the device to be charged through the target charging circuit. In this embodiment, the target charging circuit is determined according to the received control signal, and the charging circuit in the current scenario can be accurately obtained. Compared with the existing method that can only be powered by the power grid or battery, the above method of this embodiment can determine the corresponding charging method according to the target charging circuit, that is, whether to charge the device to be charged through the fast charging circuit or the slow charging circuit, thereby achieving charging of the device to be charged while ensuring the normal and continuous operation of the device to be charged.

[0059] Further, refer to Figure 3 , Figure 3 It is a functional module diagram of the second embodiment of the power supply management system of the present invention;

[0060] like Figure 3 As shown, based on the above first embodiment, in this embodiment, the controller 10 is further used to control the distribution box to only supply power to the rectifier feedback unit when the target charging circuit is the fast charging circuit, and to charge the device to be charged through the rectifier feedback unit;

[0061] It should be noted that the power supply management system in this embodiment further includes a distribution box 20 , the fast charging circuit includes a rectifier feedback unit 30 , and the slow charging circuit includes a charger 40 .

[0062] It should be understood that the rectification and feedback unit 30 can convert AC power into DC power. The AC power provided by the distribution box is the AC power provided by the power grid. At this time, since the current output by the rectification and feedback unit 30 is relatively large, the charging device can be quickly charged.

[0063] The controller 10 is further used to control the distribution box to only supply power to the charger when the target charging circuit is the slow charging circuit, and to charge the device to be charged through the charger.

[0064] It is understandable that the charger 40 can also convert AC power into DC power. At this time, since the current output by the charger 40 is a small current compared to the rectification and feedback unit 30, the charging device can be slowly charged.

[0065] Furthermore, in order to make the output current of the rectifying feedback unit 30 change dynamically according to the environment, the controller is further used to receive a first state signal fed back by the rectifying feedback unit;

[0066] The controller 10 is further configured to adjust the output of the rectification feedback unit 30 according to the first state signal when the target charging circuit is the fast charging circuit;

[0067] and / or

[0068] The controller 10 is further configured to receive a second state signal fed back by the charger 40;

[0069] The controller is further configured to adjust the output of the charger 40 according to the second state signal when the target charging circuit is the slow charging circuit.

[0070] It should be noted that the first state signal may include a voltage signal, a current signal, fault information, etc. of the direct current converted by the rectification and feedback unit 30, and this embodiment does not impose any specific limitation on this.

[0071] In a specific implementation, the controller 10 can adjust the output current of the rectification feedback unit 30 according to the first state signal received in real time, so that the fast charging current received by the charging device can be adjusted in real time. Specifically, the output current of the rectification feedback unit 30 can be adjusted by a PID algorithm.

[0072] It should be noted that the second state signal may include a voltage signal, a current signal, fault information, etc. of the direct current converted by the charger 40, and this embodiment does not impose any specific limitation on this.

[0073] In a specific implementation, the controller 10 can adjust the output current of the charger 40 according to the second state signal received in real time, so that the slow charging current received by the charging device can be adjusted in real time. Specifically, the output current of the charger 40 can be adjusted by a PID algorithm.

[0074] In this embodiment, the power supply management system also includes a distribution box, the fast charging circuit includes a rectifier feedback unit, and the slow charging circuit includes a charger. In this embodiment, when the target charging circuit is a fast charging circuit, the controller controls the distribution box to only supply power to the rectifier feedback unit, and charges the device to be charged through the rectifier feedback unit. When the target charging circuit is a slow charging circuit, the controller controls the distribution box to only supply power to the charger, and charges the device to be charged through the charger. This embodiment determines the corresponding charging mode according to the target charging circuit. When the target charging circuit is a fast charging circuit, the distribution box is controlled to only supply power to the rectifier feedback unit, and charges the device to be charged through the rectifier feedback unit, thereby realizing fast charging of the device to be charged; when the target charging circuit is a slow charging circuit, the distribution box is controlled to only supply power to the charger, and charges the device to be charged through the charger, thereby realizing slow charging of the device to be charged, thereby realizing charging of the device to be charged while ensuring the normal and continuous operation of the device to be charged.

[0075] refer to Figure 4 , Figure 4 It is a functional module diagram of the third embodiment of the power supply management system of the present invention.

[0076] like Figure 4 As shown, based on the above embodiments, in this embodiment, the power supply management system further includes: a motor controller 50 and a battery pack 60;

[0077] The motor controller 50 is used to control the operation of the motor in the device to be charged according to the electric energy output by the rectifying and feedback unit 30 and / or the electric energy stored in the battery pack 60;

[0078] It should be understood that the motor may not need all the electric energy output by the rectification and feedback unit 30 to operate, and part of the electric energy required by the motor may be transmitted to the motor according to actual conditions to save energy.

[0079] In a specific implementation, the motor controller 50 can drive the motor in the device to be charged based on part of the electric energy output by the rectifier feedback unit 30, or it can drive the motor in the device to be charged through the electric energy stored in the battery pack 60. The motor then drives the entire device to be charged to work by driving the hydraulic pump.

[0080] The battery pack 60 is used to store the electric energy output by the rectifying and feedback unit 30;

[0081] The battery pack 60 is also used to store the electric energy output by the charger 40 .

[0082] It is understandable that since the motor controller 50 may only need to consume part of the electric energy output by the rectification and feedback unit 30, in order to avoid wasting the remaining electric energy, the remaining electric energy can be stored in the battery pack 60, and the electric energy output by the charger 40 can also be stored until the battery pack 60 is fully charged.

[0083] Furthermore, the motor controller 50 is also used to control the operation of the motor by using the electric energy stored in the battery pack 60 when the electric energy output by the rectification and feedback unit 30 does not meet the electric energy required for the operation of the motor.

[0084] In a specific implementation, when the electric energy output by the rectification and feedback unit 30 is insufficient to drive the motor to operate, the pre-stored electric energy can be taken out from the battery pack 60, and the electric energy in the battery pack 60 and the electric energy output by the rectification and feedback unit 30 can jointly drive the motor to operate.

[0085] Furthermore, the controller 10 is also used to receive the actual output torque of the motor fed back by the motor controller 50 and the battery pack charging current fed back by the battery pack 60, and adjust the output current of the rectifier feedback unit 30 according to the first state signal output by the rectifier feedback unit 30 and / or the actual output torque of the motor and / or the battery pack charging current.

[0086] It should be noted that the real-time output torque of the motor refers to the torque output by the motor in real time during operation, and the battery pack charging current refers to the real-time current of the battery pack during charging.

[0087] It is understandable that the controller 10 can adjust the output current of the rectification feedback unit 30 according to the first state signal and / or the actual output torque of the motor and / or the charging current of the battery pack received in real time, so as to be able to adjust the fast charging current received by the charging device in real time. Specifically, the output current of the rectification feedback unit 30 can be adjusted by a PID algorithm.

[0088] In the specific implementation, the beneficial effects of the present invention are: when the device to be charged is connected to the power grid, the battery pack power can be maintained at 95%; when not connected to the power grid, the device to be charged can also maintain normal working time for several hours; and when the device to be charged is shut down and the power grid is normal, the battery pack is automatically charged to replenish the power until the battery pack power reaches 100% and the charging is automatically stopped. When the power grid is normal and the device to be charged is working normally, the controller adjusts the output current of the rectifier feedback unit in real time according to the power of the battery pack and the speed and torque of the motor, providing both the power consumed by the motor and the power required for charging the battery pack; when the power grid is abnormal, only the battery pack provides the energy required for the motor to work; when the device to be charged is shut down and the power grid is normal, the controller automatically charges the battery pack until it is full.

[0089] In this embodiment, the power supply management system also includes a motor controller and a battery pack. In this embodiment, the motor controller controls the operation of the motor in the device to be charged according to the electric energy output by the rectifier feedback unit and / or the electric energy stored in the battery pack, and stores the electric energy output by the rectifier feedback unit and the electric energy output by the charger through the battery pack. In this embodiment, the electric energy output by the rectifier feedback unit is split, that is, a part of the electric energy drives the motor to run through the motor controller, and the remaining part of the electric energy is stored in the battery pack, and when the motor driving electric energy is insufficient, the electric energy stored in the battery pack and the electric energy output by the rectifier feedback unit can jointly drive the motor to run.

[0090] To achieve the above object, the present invention also proposes a power supply management method, which is based on the power supply management system as described above, referring to Figure 5 , Figure 5 It is a flowchart of the first embodiment of the power supply management method of the present invention.

[0091] like Figure 5 As shown, in this embodiment, the power supply management method includes:

[0092] Step S10: the controller determines a target charging circuit according to the received control signal, wherein the target charging circuit includes a fast charging circuit and a slow charging circuit;

[0093] It should be noted that the control signal is a signal received through the CAN bus. The control signal in this embodiment may specifically include an ignition key signal and / or a slow charging button signal and / or fault information.

[0094] Further, in order to determine the target charging circuit, in the present embodiment, the step S10 includes: when the controller receives the ignition key signal as on, the slow charging button signal as off and there is no fault information, the fast charging circuit is used as the target charging circuit; when the controller receives the ignition key signal as off, the slow charging button signal as on and there is no fault information, the slow charging circuit is used as the target charging circuit.

[0095] Further, refer to Figure 2 , Figure 2 It is a schematic diagram of the working mode of the device to be charged of the present invention.

[0096] like Figure 2 As shown, the device to be charged first enters the power-on mode, at which time it waits for the CAN bus to wake up. After the power-on is completed, it enters the initialization mode. The initialization includes initializing I / 0, initializing communication, initializing storage, and initializing function code settings. If the initialization fails, the fault mode is performed. After the initialization is completed, it enters the system self-test mode. The system self-test includes AFE self-test, PDU test, OBC test, BMS wake-up and test, and five-in-one wake-up and test. If the self-test fails, it also needs to enter the fault mode. When the self-test is completed and there is no fault, it enters the waiting mode, that is, waiting for the electronic control unit (Electronic Control Unit, ECU) to send instructions. When the system fails during the waiting process, it also needs to enter the fault mode. After entering the fault mode, a fault prompt will be issued, and the device will shut down or limp. After the ignition key is turned off, it enters the shutdown mode. Depending on whether the charging button is pressed, it enters the sleep mode or the night charging mode. After the night charging is fully charged, it enters the sleep mode today. After exiting the night charging mode, charging stops. According to the ignition key command, the power grid condition and the BMS voltage condition, it is determined whether to enter the slow charging mode, the operating mode or the transition mode in the high-voltage working mode. The operating mode is the fast charging mode in this embodiment.

[0097] It is understandable that when the controller 10 receives an ignition key signal from the ECU that is on, a slow charge button signal that is off, and does not receive fault information in the initialization mode, the system self-check mode, and the waiting mode, the fast charge circuit is used as the target charging circuit.

[0098] It is understandable that when the controller 10 receives an ignition key signal from the ECU that is off, a slow charge button signal that is on, and does not receive fault information in the initialization mode, system self-check mode, or waiting mode, the slow charge circuit is used as the target charging circuit.

[0099] In a specific implementation, if the controller 10 receives fault information, it needs to enter a fault mode and can prompt the management personnel to handle it according to the fault information until the fault is restored. After the fault is restored, the controller 10 will not receive fault information and will continue with subsequent operations.

[0100] Step S20: the controller charges the device to be charged through the target charging circuit.

[0101] Further, in this embodiment, the step S20 includes: when the target charging circuit is a fast charging circuit, the controller controls the distribution box to only supply power to the rectifier feedback unit in the fast charging circuit, and charges the device to be charged through the rectifier feedback unit; when the target charging circuit is a slow charging circuit, the controller controls the distribution box to only supply power to the charger in the slow charging circuit, and charges the device to be charged through the charger.

[0102] It should be noted that the power supply management system in this embodiment further includes a distribution box 20 , the fast charging circuit includes a rectifier feedback unit 30 , and the slow charging circuit includes a charger 40 .

[0103] It should be understood that the rectification and feedback unit 30 can convert AC power into DC power. The AC power provided by the distribution box is the AC power provided by the power grid. At this time, since the current output by the rectification and feedback unit 30 is relatively large, the charging device can be quickly charged.

[0104] It is understandable that the charger 40 can also convert AC power into DC power. At this time, since the current output by the charger 40 is a small current compared to the rectification and feedback unit 30, the charging device can be slowly charged.

[0105] In this embodiment, when the target charging circuit is a fast charging circuit, the controller controls the distribution box to only supply power to the rectifier feedback unit, and charges the device to be charged through the rectifier feedback unit. When the target charging circuit is a slow charging circuit, the controller controls the distribution box to only supply power to the charger, and charges the device to be charged through the charger. In this embodiment, the corresponding charging method is determined according to the target charging circuit. When the target charging circuit is a fast charging circuit, the distribution box is controlled to only supply power to the rectifier feedback unit, and charges the device to be charged through the rectifier feedback unit, thereby realizing fast charging of the device to be charged; when the target charging circuit is a slow charging circuit, the distribution box is controlled to only supply power to the charger, and charges the device to be charged through the charger, thereby realizing slow charging of the device to be charged, thereby realizing charging of the device to be charged while ensuring the normal and continuous operation of the device to be charged.

[0106] In this embodiment, the controller determines the target charging circuit according to the received control signal, and then charges the device to be charged through the target charging circuit. In this embodiment, the target charging circuit is determined according to the received control signal, and the charging circuit in the current scenario can be accurately obtained. Compared with the existing method that can only be powered by the power grid or battery, the above method of this embodiment can determine the corresponding charging method according to the target charging circuit, that is, charging the device to be charged through the fast charging circuit or the slow charging circuit, thereby achieving charging of the device to be charged while ensuring the normal and continuous operation of the device to be charged.

[0107] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0108] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0109] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A power supply management system, characterized in that: The power supply management system includes a controller; The controller is used to determine a target charging circuit according to a received control signal, wherein the target charging circuit includes a fast charging circuit and a slow charging circuit; The controller is further used to charge the device to be charged through the target charging circuit; The control signal includes an ignition key signal and / or a slow charge button signal and / or fault information; The controller is further configured to use the fast charging circuit as the target charging circuit when receiving the ignition key signal that the ignition key is on, the slow charging button signal that the slow charging button is off, and there is no fault information; The controller is further configured to use the slow charging circuit as the target charging circuit when receiving the ignition key signal that is off, the slow charging button signal that is on, and no fault information; The power supply management system further includes a distribution box, the fast charging circuit includes a rectifier feedback unit, and the slow charging circuit includes a charger; The controller is further used to control the distribution box to only supply power to the rectifier feedback unit when the target charging circuit is a fast charging circuit, and to charge the device to be charged through the rectifier feedback unit; The controller is further used to control the distribution box to only supply power to the charger when the target charging circuit is a slow charging circuit, and to charge the device to be charged through the charger.

2. The power supply management system according to claim 1, characterized in that: The controller is further configured to receive a first state signal fed back by the rectification feedback unit; The controller is further configured to adjust the output of the rectification feedback unit according to the first state signal when the target charging circuit is the fast charging circuit; and / or The controller is further configured to receive a second state signal fed back by the charger; The controller is further configured to adjust the output of the charger according to the second state signal when the target charging circuit is the slow charging circuit.

3. The power supply management system according to claim 1, characterized in that: The power supply management system also includes: a motor controller and a battery pack; The motor controller is used to control the operation of the motor in the device to be charged according to the electric energy output by the rectifier feedback unit and / or the electric energy stored in the battery pack; The battery pack is used to store the electric energy output by the rectification and feedback unit; The battery pack is also used to store the electric energy output by the charger.

4. The power supply management system according to claim 3, characterized in that: The controller is also used to receive the actual output torque of the motor fed back by the motor controller and the battery pack charging current fed back by the battery pack, and adjust the output current of the rectifier feedback unit according to the first state signal output by the rectifier feedback unit and / or the actual output torque of the motor and / or the battery pack charging current.

5. A power supply management method based on the power supply management system according to any one of claims 1 to 4, characterized in that: The power supply management method comprises: The controller determines a target charging circuit according to the received control signal, wherein the target charging circuit includes a fast charging circuit and a slow charging circuit; The controller charges the device to be charged through the target charging circuit; The control signal includes an ignition key signal and / or a slow charge button signal and / or fault information; The controller determines a target charging circuit according to the received control signal, wherein the target charging circuit includes a fast charging circuit and a slow charging circuit, specifically comprising: When the controller receives that the ignition key signal is on, the slow charge button signal is off, and there is no fault information, the fast charge circuit is used as the target charge circuit; When the controller receives that the ignition key signal is off, the slow charging button signal is on, and there is no fault information, the slow charging circuit is used as the target charging circuit; The step of the controller charging the device to be charged through the target charging circuit specifically includes: When the target charging circuit is a fast charging circuit, the controller controls the power distribution box to only supply power to the rectifier feedback unit in the fast charging circuit, and charges the device to be charged through the rectifier feedback unit; When the target charging circuit is a slow charging circuit, the controller controls the distribution box to only supply power to the charger in the slow charging circuit, and charges the device to be charged through the charger.

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