Storage battery equalizing charge control method, system, equipment and medium

Abstract

The invention belongs to the technical field of power automobile energy management, and provides a storage battery equalizing charge control method, system and device and a medium. When the power supply state is that the whole vehicle is powered off, whether the storage battery is charged with first current or not is judged based on the electric quantity information of the storage battery, so that passive equalizing charging of the storage battery is achieved; when the whole vehicle is powered on, whether the storage battery is charged with second current or not is judged based on the voltage information of the storage battery so as to achieve active equalizing charging of the storage battery, and the current value of the first current is smaller than that of the second current. According to the invention, normal charging of the vehicle storage battery can be realized in different vehicle power supply states, and normal work of high-load electric equipment such as a hydraulic tail plate is supported; and storage battery feed during long-time parking of the vehicle is eliminated, and storage battery equalization charging is realized.

Description

Technical Field

[0001] The present application relates to the technical field of power vehicle energy management, and in particular to a battery balanced charging control method, system, device and medium. Background Art

[0002] Currently, the battery charging principle for new energy vehicles is as follows: the vehicle control unit (VCU) detects a low battery charge and sends a command to the battery management system (BMS). The BMS then sends a command to the DC / DC converter (DCC) to initiate a float charge. Float charging requires the vehicle to be in the KeyOn state. If the vehicle is in the KeyOff state, the VCU cannot wake up and send a command to charge the battery. For new energy light trucks, using the hydraulic tailgate increases the load on the battery, preventing it from receiving energy. This can lead to battery overcharging, resulting in problems such as the vehicle being unable to power on and the hydraulic tailgate not functioning properly.

[0003] Furthermore, all new energy vehicles currently on the market use float charging. This means that during normal operation, the charging device bears the regular load while simultaneously charging the battery pack to compensate for self-discharge and maintain the battery in a fully charged state for standby use. This type of float charging uses a low current and lacks equalization charging (equalization charging compensates for voltage unevenness in the battery during use and restores it to a specified range, as well as supplemental charging after a large discharge; equalization charging is constant high current charging).

[0004] Please see the attached Figure 1 The hydraulic tailgate of existing new energy vehicles is powered by the vehicle battery. When the battery voltage is low and needs to be recharged, the vehicle must be powered on. The VCU will wake up and send a command to the BMS, which in turn sends a command to the DCDC to float charge the battery and maintain the battery voltage. However, this method has the following problems:

[0005] 1. When the vehicle is powered off and the hydraulic tailgate is frequently used, the battery is fed back and the VCU cannot wake up and send instructions to the DCDC to charge the battery.

[0006] 2. There are differences between new energy vehicles and fuel vehicles. When using a hydraulic tailgate, fuel vehicles usually need to start the engine to charge the battery, and the vehicle makes running noise, which is easy for users to perceive. However, when a new energy vehicle is powered on and off, there is no difference in the vehicle status noise. When the vehicle is powered off, users can easily mistakenly believe that the vehicle is powered on.

[0007] 3. When the hydraulic tailboard is in use, the DC motor of the hydraulic tailboard consumes a lot of power. When in use, the battery cannot be charged and power supply problems will occur.

[0008] 4. When the vehicle is powered on, the hydraulic tailgate is in use because of the high power. The vehicle battery float charge current is small and the voltage does not meet the use requirements of the hydraulic tailgate, causing the hydraulic tailgate to malfunction.

[0009] 5. Currently, new energy vehicles on the market are all float charged. When the vehicle is READY, the float charging current is relatively small, generally a few amperes. After the hydraulic tailgate is used, due to its high power, it takes about 30 minutes for the battery to be fully charged to meet the working requirements of the hydraulic tailgate. The hydraulic tailgate cannot work normally in a short time.

[0010] 6. The battery power supply of the entire vehicle will cause the entire vehicle to be unable to power on, the vehicle will not be able to enter the READY state, and the vehicle will not be able to drive normally.

[0011] 7. Low battery feed voltage of the vehicle will also cause the hydraulic tailgate to not operate normally and stop suddenly, which will cause safety hazards.

[0012] 8. If the vehicle is parked for a long time and the vehicle is not powered on, the VCU will not wake up to instruct the DCDC to charge the battery. Due to the static current of the vehicle, the battery will discharge slowly, resulting in power feeding.

[0013] 9. When the vehicle is powered on, DCDC continuously charges the battery, which will increase the energy consumption of the power battery.

[0014] 10. When the vehicle is parked for a long time, the whole vehicle can be powered on, the battery is charged slowly, the battery voltage is low, and the hydraulic tailgate cannot work normally.

[0015] To address at least one of the aforementioned issues, relevant technicians have continuously improved battery charging methods. For example, patent application publication number CN116691646A discloses a hybrid electric vehicle battery charging system and method. The system includes a battery capacity detection module (EBS), a body control module (BCM), an onboard communication module (T-BOX), a server, an engine control module (ECM), a vehicle control module (HCM), a power battery controller (BMS), and a voltage converter (DCDC). The HCM is connected to the body control module (BCM), the voltage converter (DCDC), the engine control module (ECM), the onboard communication module (T-BOX), and the power battery controller (BMS). The HCM controls the opening and closing of the high-voltage system and determines whether to start the engine. The power battery controller (BMS) and the voltage converter are connected to the battery, respectively, to convert the power battery voltage to a voltage suitable for charging the battery. However, this method is applicable to hybrid electric vehicles and not to pure electric vehicles. Summary of the Invention

[0016] In response to the shortcomings of the existing technology, the present invention provides a battery balanced charging control method, system, device and medium, which can achieve normal charging of vehicle batteries under different vehicle power supply states, support the normal operation of high-load electrical equipment such as hydraulic tailgates; and eliminate battery power feeding when the vehicle is parked for a long time and achieve battery balanced charging.

[0017] To achieve the above object, the present invention adopts the following technical solutions:

[0018] A first aspect of the present invention provides a battery balanced charging control method, comprising the following steps:

[0019] Step S100, determining the vehicle power status;

[0020] Step S200: When the power state is that the vehicle is powered off, determining whether to supplement the battery with a first current based on the battery power information to achieve passive equalization charging of the battery;

[0021] Step S300: When the power state is that the vehicle is powered on, it is determined based on the voltage information of the battery whether to supplement the battery with a second current to achieve active balanced charging of the battery, wherein the current value of the first current is smaller than the current value of the second current.

[0022] Furthermore, step S200 also includes: obtaining battery power information; when the battery power is lower than a preset lower power threshold, determining that the battery needs to be recharged; and sending a first instruction to the DC converter; the DC converter executes the first instruction to transmit a first current to the battery to complete passive equalization charging.

[0023] Furthermore, the first instruction includes a current value of the first current, a charging duration, and a target power difference.

[0024] Furthermore, step S200 also includes: when it is determined that the battery needs to be recharged, waking up the DC converter controller step by step and sending a recharge instruction to the DC converter controller, the DC converter controller dynamically adjusts the control strategy after receiving the recharge instruction to send a first instruction to the DC converter, wherein the step-by-step waking up is to wake up the vehicle controller, the battery management system and the DC converter controller in sequence.

[0025] Furthermore, step S300 also includes: obtaining voltage information of the battery; when the voltage of the battery is lower than a preset voltage lower limit threshold, determining that the battery needs to be recharged, and sending a second instruction to the DC converter; the DC converter executes the second instruction to transmit a second current to the battery to complete active equalization charging.

[0026] Furthermore, the second instruction includes a current value of a second current, a charging duration, and a target voltage difference, wherein the current value of the second current meets a peak demand of high-load electrical equipment.

[0027] A second aspect of the present invention provides a battery balanced charging control system, comprising:

[0028] Judgment module, used to judge the power status of the vehicle;

[0029] A passive balancing charging module, configured to determine whether to charge the battery with a first current based on battery power information when the vehicle is powered off, so as to achieve passive balancing charging of the battery;

[0030] The active balancing charging module is used to determine whether to replenish the battery with a second current based on the voltage information of the battery when the power supply state is that the whole vehicle is powered on, so as to achieve active balancing charging of the battery, wherein the current value of the first current is less than the current value of the second current.

[0031] Furthermore, the system also includes a detection module for detecting the battery power and voltage in real time.

[0032] A third aspect of the present invention provides a computer-readable storage medium having computer-readable instructions stored thereon. When the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the above-mentioned battery balanced charging control method.

[0033] A fourth aspect of the present invention provides a computer device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned battery balanced charging control method when executing the computer program.

[0034] The beneficial technical effects of the present invention are:

[0035] When the vehicle is powered off and high-load electrical equipment such as a hydraulic tailgate is in use, if it is determined that the battery power is lower than a preset power lower limit threshold, the present invention will gradually wake up the DC converter to transmit low-voltage and low-current to the battery, that is, the first current is used for passive equalization charging; when the vehicle is powered on and high-load electrical equipment such as a hydraulic tailgate is in use, if it is determined that the battery voltage is lower than a preset voltage lower limit threshold, the DC converter will be controlled to transmit low-voltage and high-current to the battery, that is, the second current is used for active equalization charging, thereby ensuring the normal use of the high-load electrical equipment.

[0036] High-load electrical equipment such as the hydraulic tailgate of a pure electric vehicle suitable for the method and system of the present invention can meet normal use around the clock, and will not encounter problems that do not meet the use conditions due to long battery charging time and low voltage; and high-load electrical equipment will not be unable to be used normally due to battery power supply problems, and sudden cessation of work will not pose a safety hazard to goods or personnel.

[0037] In a pure electric vehicle applicable to the method and system of the present invention, high-load electrical equipment can be used normally regardless of whether the vehicle is in a power-on or power-off state, thereby improving the efficiency and frequency of use of the high-load electrical equipment.

[0038] The present invention can solve the problem in the background technology that the whole vehicle cannot be powered on and the vehicle cannot be high-voltage, and thus the vehicle cannot be driven normally due to insufficient battery power and power supply after the hydraulic tailgate is used; and it can also solve the problem that the vehicle cannot be powered on and the battery is slowly feeding power when the vehicle is parked for a long time.

[0039] The present invention improves the service life and flexibility of the vehicle battery, saves vehicle use costs, and can enhance users' recognition of the vehicle's external power supply intelligent charging function; and the battery of the present invention can realize active and passive balanced charging, so users do not need to consider the vehicle power status when using high-load electrical equipment, which is more convenient to use.

[0040] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrating embodiments consistent with the present application and, together with the specification, serving to explain the principles of the present application. It is obvious that the drawings described below are merely some embodiments of the present application, and it is possible for a person of ordinary skill in the art to derive other drawings based on these drawings without inventive effort. In the accompanying drawings:

[0042] Figure 1 A schematic diagram of the charging principle of a new energy light truck in the existing technology;

[0043] Figure 2 This is a flow chart of the battery balanced charging control method of this application;

[0044] Figure 3 This is a schematic diagram of the charging principle when the vehicle is powered off, which is applicable to the method of this application;

[0045] Figure 4 The schematic diagram of passive and active equalizing charging for the battery in this application;

[0046] Figure 5 This is the framework diagram of the battery equalization charging control system for this application;

[0047] Figure 6 A schematic structural diagram of a computer system suitable for a computer device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0048] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention pertains. It should be understood that certain features of the invention (described in the context of separate embodiments for clarity) may also be provided in combination in a single embodiment. Conversely, multiple features of the invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or, where appropriate, in any other described embodiment of the invention. Certain features described in the context of various embodiments will not be considered essential features of those embodiments unless the embodiment is inoperable without those elements. The invention is further described below through specific examples, but it should be noted that the specific process conditions and results described in the examples of the invention are only for illustration of the invention and are not intended to limit the scope of protection of the invention. Any equivalent changes or modifications made in accordance with the spirit and substance of the invention should be included within the scope of protection of the invention.

[0049] See also Figure 2 , is a flow chart of the battery balanced charging control method of this application, which is detailed as follows:

[0050] Step S100, determining the power status of the vehicle.

[0051] Specifically, the power status of the present application includes vehicle power-on and vehicle power-off. The automobile applicable to the method of the present application is preferably a pure electric vehicle without an engine. The conditions for determining that the vehicle is powered on are set according to actual needs. For example, when the power start ON gear is valid, all controllers of the vehicle pass self-test, the high-voltage relay is closed, and there is no level 4 fault (such as collision information), the power status is determined to be vehicle power-off. Furthermore, the conditions for determining that the vehicle is powered-off are set according to actual needs. For example, when the power is turned off in the OFF gear for 2 seconds, the bus current is less than 20A, the high-voltage relay is disconnected, and the bus voltage is less than 60V, the power status is determined to be vehicle power-off.

[0052] Step S200 : When the power state is that the vehicle is powered off, it is determined based on the battery power information whether to supplement the battery with a first current to achieve passive balanced charging of the battery.

[0053] Specifically, the battery charge information is obtained. When the battery charge is lower than a preset lower charge threshold, it is determined that the battery needs to be recharged, and a first instruction is sent to the DC converter. The DC converter executes the first instruction and transmits a first current to the battery to complete passive equalization charging. The vehicle applicable to the method of the present application is equipped with an EBS, i.e., a battery sensor, which detects the battery charge in real time through the battery sensor to obtain the battery charge information. The preset lower charge threshold of the present application can be set according to factors such as different vehicle models, different power requirements, power battery health status, and battery model. For example, when the vehicle is a new energy light truck, its compatible battery capacity can reach 100kWh, and the corresponding preset lower charge threshold can be 20% to 30% of the battery capacity. In addition, if the light truck is equipped with high-load electrical equipment, such as a hydraulic tailgate or refrigeration system, the preset lower charge threshold can be appropriately increased to 30% to 40% to avoid voltage sag. If the light truck's power battery is aging, the preset lower charge threshold can be appropriately increased to 25% to 35% to prevent over-discharge.

[0054] More specifically, when the present application determines that the battery requires recharging, it gradually wakes up the DC converter controller and sends a recharging instruction to the DC converter controller. Upon receiving the recharging instruction, the DC converter controller dynamically adjusts its control strategy to send a first instruction to the DC converter. This step-by-step wakeup sequentially wakes up the VCU vehicle controller, the BMS battery management system, and the DC converter controller (DCDCD controller). When the vehicle is powered off, the EBS monitors the battery charge in real time. If the battery charge falls below a preset lower threshold, indicating a need for immediate recharging, the EBS immediately wakes up the VCU, which then wakes up and sends an instruction to the BMS. The BMS then wakes up and sends a recharging instruction to the DCDC controller. Upon receiving the recharging instruction, the DCDC controller dynamically adjusts its control strategy to low-voltage, low-current charging and sends a first instruction to the DCDC. The DCDC then receives the first instruction and converts the high-voltage power supplied by the power battery controlled by the BMS into a low-voltage, low-current, first current. This application utilizes a step-by-step wakeup mechanism, which offers higher resource utilization and lower failure risk compared to parallel wakeup, ensuring high-voltage safety and logical rigor.

[0055] More specifically, the first instruction includes the current value of the first current, the charging duration and the target charge difference. The first instruction of the present application can be set according to factors such as battery characteristics, charging equipment capabilities, and usage scenario requirements. For example, the first current is a low-voltage, low-current current, and its current value should meet the passive equalization charging requirements and be within a certain range of the battery's nominal capacity to avoid exceeding the battery's maximum charging current; it can also be dynamically adjusted according to influencing factors such as battery temperature. The calculation of the charging duration can be segmented and controlled according to fast charging scenarios and slow charging scenarios, and the total duration shall not exceed the recommended continuous charging upper limit to prevent overcharging. The setting of the target charge difference can be modified according to SOC range optimization, load demand matching, and power battery health status.

[0056] Step S300: When the power state is that the vehicle is powered on, it is determined based on the voltage information of the battery whether to supplement the battery with a second current to achieve active balanced charging of the battery, wherein the current value of the first current is smaller than the current value of the second current.

[0057] Specifically, the voltage information of the battery is obtained. When the voltage of the battery is lower than the preset lower voltage threshold, it is determined that the battery needs to be recharged, and a second instruction is sent to the DC converter. The DC converter executes the second instruction and transmits a second current to the battery to complete active equalization charging. The present application detects the voltage of the battery in real time through a battery sensor to obtain the voltage information of the battery. The preset lower voltage threshold of the present application can be set according to influencing conditions such as battery characteristics, vehicle operating conditions and environmental factors. For example, the lower voltage limit is set according to different types of batteries, and the lower voltage limit is dynamically adjusted according to changes in battery temperature. If the vehicle is equipped with high-load electrical equipment, such as a hydraulic tailgate, a refrigeration system, etc., the preset lower voltage limit can be appropriately increased to ensure voltage stability under instantaneous load. In addition, the lower voltage limit can be dynamically adjusted according to the health status of the power battery.

[0058] More specifically, when the vehicle is powered on, the EBS detects the battery voltage in real time. If it detects that the battery voltage is lower than the preset voltage lower limit threshold, it means that charging is needed in time. The EBS will immediately wake up the VCU, the VCU wakes up and sends an instruction to the BMS, and the BMS wakes up and sends a charging instruction to the DCDC controller. After receiving the charging instruction, the DCDC controller dynamically adjusts the control strategy to low-voltage and high-current charging and sends a second instruction to the DCDC. At this time, the DCDC receives the second instruction and converts the high-voltage electricity delivered by the power battery controlled by the BMS into a low-voltage and high-current, i.e., the second current.

[0059] More specifically, the second instruction of the present application includes the current value of the second current, the charging duration, and the target voltage difference, wherein the current value of the second current meets the peak demand of high-load electrical equipment. The second instruction of the present application is set according to actual needs, for example, it can take into account both battery safety and the peak demand of high-load equipment. The current value of the second current needs to cover the instantaneous peak current of high-load electrical equipment such as the hydraulic tailgate. For example, if the instantaneous peak current of the hydraulic tailgate is 80A, the current value of the second current needs to be set to 85A-100A; and the upper limit of the second current does not exceed the maximum allowable charging current of the battery. The current value of the second current can also be dynamically adjusted based on influencing factors such as battery temperature to prevent battery overheating. The charging duration setting can be controlled in stages according to the usage scenario. For example, when the hydraulic tailgate is in operation, a short-term high current is used. If the hydraulic tailgate is used continuously, the target voltage difference needs to be increased to offset the voltage drop.

[0060] Further, see Figure 3 and Figure 4 , the vehicle applicable to the method of the present application is equipped with an EBS. When the whole vehicle is powered off, when the EBS detects that the battery power is lower than the preset power lower limit threshold, the EBS sends a wake-up signal to the VCU. After the VCU wakes up, it sends a wake-up signal to the BMS and an enable signal to the DCDC controller. The BMS controls the high voltage on the power battery to transmit high voltage electricity to the DCDC. The DCDC converts the high voltage electricity into low voltage and low current according to the first instruction, and then transmits it to the battery for passive equalization charging to power the hydraulic tailgate. When the whole vehicle is powered on, when the hydraulic tailgate is in use, the EBS detects that the battery voltage drops rapidly and is lower than the preset voltage lower limit threshold. The EBS sends a wake-up signal to the VCU. After the VCU wakes up, it sends a wake-up signal to the BMS and an enable signal to the DCDC controller. The BMS controls the high voltage on the power battery to transmit high voltage electricity to the DCDC. The DCDC converts the high voltage electricity into low voltage and high current according to the second instruction, and then transmits it to the battery for active equalization charging to power the hydraulic tailgate.

[0061] Furthermore, after the EBS detects that the battery is fully charged, or after completing the first instruction and the second instruction, the VCU instructs the vehicle's power battery to power down at high voltage to reduce the output energy consumption of the power battery.

[0062] Furthermore, in the method of the present application, if the driver forgets to power on the entire vehicle when using high-voltage equipment such as a hydraulic tailgate, this can be ignored, and there is no need to manually power on the entire vehicle, making it more comfortable to use.

[0063] Furthermore, a vehicle applicable to the method of the present application can realize intelligent floating charging of the battery by the vehicle in a dormant state, thereby solving the problem of battery power feeding; and solving the problem of the vehicle not being powered on when parked for a long time and the battery being slowly fed and not replenished.

[0064] See also Figure 5 , which is a framework diagram of the battery balanced charging control system 500 of this application, including:

[0065] The judging module 510 is used to judge the power status of the vehicle;

[0066] The passive balancing charging module 520 is configured to determine whether to charge the battery with a first current based on the battery power information when the vehicle is powered off, so as to achieve passive balancing charging of the battery;

[0067] The active balancing charging module 530 is used to determine whether to supplement the battery with a second current based on the battery voltage information when the power supply state is that the vehicle is powered on, so as to achieve active balancing charging of the battery, wherein the current value of the first current is smaller than the current value of the second current.

[0068] Furthermore, the system also includes a detection module 540 for detecting the battery power and voltage in real time.

[0069] It should be noted that the battery balanced charge control system provided in the above embodiment and the battery balanced charge control method provided in the above embodiment share the same concept. The specific manner in which each module and unit performs operations has been described in detail in the method embodiments and will not be repeated here. In actual applications, the battery balanced charge control system provided in the above embodiment can, as needed, allocate the above functions to different functional modules, i.e., divide the system's internal structure into different functional modules to perform all or part of the functions described above. This is not a limitation herein.

[0070] An embodiment of the present application further provides a computer device, comprising: one or more processors; and a storage device for storing one or more programs. When the one or more programs are executed by the one or more processors, the computer device implements the battery balanced charging control method provided in each of the above embodiments.

[0071] Figure 6 The following is a schematic diagram showing the structure of a computer system suitable for a computer device according to an embodiment of the present application. Figure 6 The computer system 600 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0072] like Figure 6As shown, computer system 600 includes a central processing unit (CPU) 601, which can perform various appropriate actions and processes according to programs stored in read-only memory (ROM) 602 or programs loaded from storage unit 608 into random access memory (RAM) 603, such as executing the methods described in the above embodiments. RAM 603 also stores various programs and data required for system operation. CPU 601, ROM 602, and RAM 603 are connected to each other via bus 604. Input / output (I / O) interface 605 is also connected to bus 604. The following components are connected to I / O interface 605: input unit 606 including a keyboard, mouse, etc.; output unit 607 including a cathode ray tube (CRT), liquid crystal display (LCD), speakers, etc.; storage unit 608 including a hard disk, etc.; and communication unit 609 including a network interface card such as a LAN (local area network) card, modem, etc. Communication unit 609 performs communication processing via a network such as the Internet. A drive 610 is also connected to the I / O interface 605 as needed. A removable medium 611, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 610 as needed so that a computer program read therefrom is installed into the storage section 608 as needed.

[0073] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer tool program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 609, and / or installed from the removable medium 611. When the computer program is executed by the central processing unit (CPU) 601, the various functions defined in the system of the present application are executed.

[0074] It should be noted that the computer-readable medium described in the embodiments of this application may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium may, for example, be an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory, read-only memory, erasable programmable read-only memory, flash memory, optical fiber, a portable compact disk read-only memory, an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying a computer-readable computer program. This propagated data signal may take a variety of forms, including, but not limited to, an electromagnetic signal, an optical signal, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. The computer program embodied on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, etc., or any suitable combination of the foregoing.

[0075] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, program segment, or part of the code, and the above-mentioned module, program segment, or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0076] The units involved in the embodiments described in this application can be implemented by tools or hardware, and the units described can also be set in a processor. In some cases, the names of these units do not constitute limitations on the units themselves.

[0077] Another aspect of the present application provides a computer-readable storage medium having a computer program stored thereon. When executed by a computer processor, the computer program causes the computer to perform the battery balanced charging control method described above. The computer-readable storage medium may be included in the computer device described in the above embodiments, or may exist independently and not be incorporated into the computer device.

[0078] Another aspect of the present application provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the battery balanced charging control method provided in each of the above embodiments.

[0079] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A battery balanced charging control method, characterized in that: The following steps are involved: Step S100, determining the vehicle power status; Step S200, when the power state is that the vehicle is powered off, determining whether to supplement the battery with a first current based on the battery power information to achieve passive equalization charging of the battery; Step S300: When the power supply state is that the entire vehicle is powered on, determine whether to supplement the battery with a second current based on the voltage information of the battery to achieve active balanced charging of the battery, wherein the current value of the first current is smaller than the current value of the second current.

2. The method according to claim 1, characterized in that The step S200 further includes: obtaining power information of the battery; when the power of the battery is lower than a preset lower power threshold, determining that the battery needs to be recharged; and sending a first instruction to the DC converter; the DC converter executes the first instruction and transmits the first current to the battery to complete the passive equalization charging.

3. The method according to claim 2, characterized in that The first instruction includes a current value of the first current, a charging duration, and a target power difference.

4. The method according to claim 3, characterized in that The step S200 also includes: when it is determined that the battery needs to be recharged, waking up the DC converter controller step by step and sending a recharge instruction to the DC converter controller, the DC converter controller receiving the recharge instruction and dynamically adjusting the control strategy to send the first instruction to the DC converter, wherein the step-by-step waking up is to wake up the vehicle controller, the battery management system and the DC converter controller in sequence.

5. The method according to claim 2, characterized in that The step S300 further includes: obtaining voltage information of the battery; when the voltage of the battery is lower than a preset voltage lower limit threshold, determining that the battery needs to be recharged; and sending a second instruction to the DC converter; the DC converter executes the second instruction to transmit the second current to the battery to complete the active equalization charging.

6. The method according to claim 5, characterized in that The second instruction includes a current value of a second current, a charging duration, and a target voltage difference, wherein the current value of the second current meets a peak demand of a high-load electrical device.

7. A battery balanced charging control system, characterized in that: include: Judgment module, used to judge the power status of the vehicle; a passive balancing charging module, configured to determine, when the power state is that the vehicle is powered off, based on the battery power information, whether to supplement the battery with a first current to achieve passive balancing charging of the battery; An active balancing charging module is used to determine whether to supplement power to the battery with a second current based on the voltage information of the battery when the power supply state is that the vehicle is powered on, so as to achieve active balancing charging of the battery, wherein the current value of the first current is less than the current value of the second current.

8. The system according to claim 7, characterized in that The system further comprises a detection module for detecting the electric quantity and voltage of the battery in real time.

9. A computer-readable storage medium, characterized in that Computer-readable instructions are stored thereon, and when the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the battery balanced charging control method according to any one of claims 1 to 6.

10. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the battery balanced charging control method according to any one of claims 1 to 6 when executing the computer program.

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