CN117175727A

CN117175727A - Method, device, equipment and storage medium for charging battery system

Info

Publication number: CN117175727A
Application number: CN202311061517.7A
Authority: CN
Inventors: 李晓斌; 李代程
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2023-12-05

Abstract

The present disclosure provides a charging method, a device, equipment and a storage medium for a battery system, which relate to the technical field of battery charging, and the battery system comprises a plurality of battery modules by judging whether the battery system meets a charging starting condition; if the battery system meets the charging starting condition, controlling the battery system to start charging, and collecting real-time battery parameters of each battery module in real time in the charging process of the battery system; based on the real-time battery parameters, determining the charging current corresponding to each battery module and dynamically updating the charging current at intervals of a preset time length; for any battery module, a charging module in the battery system is controlled to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state. According to the application, the charging current is flexibly adjusted according to the actual state and the requirement of the battery module, so that the charging efficiency and the charging quality are improved, the battery module can be better protected, and the service life of the battery module is prolonged.

Description

Method, device, equipment and storage medium for charging battery system

Technical Field

The disclosure relates to the technical field of battery charging, and in particular relates to a charging method, a device, equipment and a storage medium of a battery system.

Background

In the current lithium battery application, especially in the fields of electric automobiles, energy storage and data center standby systems and the like, a large number of battery modules connected in series are used to form a battery system. However, there are some problems in the battery module replacement process. In general, it is necessary to ensure that the battery status (such as voltage and power) of the new and old battery modules is consistent with that of other battery modules in the original battery system before replacement.

In the related art, when a battery system is charged, all batteries use the same charging current, and the charging needs to be started and stopped simultaneously, so that a barrel effect is easy to occur. The cask effect refers to the element whose overall system performance is the worst when part of the elements in one system perform lower than the other elements. In a battery system, if one of the battery modules fails to be charged or is excessively charged, its service life may be reduced, and more seriously, the battery is excessively charged, which may cause thermal runaway and cause a risk of fire explosion of the battery.

Disclosure of Invention

The present disclosure provides a charging method, apparatus, device, and storage medium for a battery system.

According to an aspect of the present disclosure, there is provided a charging method of a battery system including a plurality of battery modules by judging whether the battery system satisfies a charge start condition; if the battery system meets the charging starting condition, controlling the battery system to start charging, and collecting real-time battery parameters of each battery module in real time in the charging process of the battery system; based on the real-time battery parameters, determining the charging current corresponding to each battery module, and dynamically updating the charging current every preset time length; for any battery module, a charging module in the battery system is controlled to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state.

According to the charging method of the battery system, the charging current corresponding to each battery module is dynamically determined based on the collected real-time battery parameters of each battery module, so that the charging current can be flexibly adjusted according to the actual state and the requirements of the battery modules, and the battery system is charged in an optimal mode. This helps improving charge efficiency and charge quality, reduces charge time to can protect battery module better, prolong its life.

According to another aspect of the present disclosure, there is provided a charging device of a battery system, including a judging module for judging whether the battery system satisfies a charging start condition, the battery system including a plurality of battery modules; the acquisition module is used for controlling the battery system to start charging if the battery system meets the charging starting condition, and acquiring real-time battery parameters of each battery module in real time in the charging process of the battery system; the determining module is used for determining the charging current corresponding to each battery module based on the real-time battery parameters and dynamically updating the charging current every preset time length; and the control module is used for controlling the charging module in the battery system to charge the battery module based on the charging current corresponding to the battery module aiming at any battery module until all the battery modules reach a full-charge state.

According to another aspect of the present disclosure, there is provided an electronic device including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of charging a battery system as described above.

According to another aspect of the present disclosure, there is provided a non-transitory computer-readable storage medium storing computer instructions for causing the computer to perform the above-described charging method of the battery system.

According to another aspect of the present disclosure, there is provided a computer program product comprising a computer program which, when executed by a processor, implements the above-described method of charging a battery system.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.

Drawings

The drawings are for a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

fig. 1 is a schematic diagram illustrating an exemplary implementation of a charging method of a battery system according to an exemplary embodiment of the present disclosure.

Fig. 2 is a schematic diagram of a frame of a battery system according to an exemplary embodiment of the present disclosure.

Fig. 3 is a schematic diagram illustrating an exemplary implementation of a charging method of a battery system according to an exemplary embodiment of the present disclosure.

Fig. 4 is a schematic diagram illustrating an exemplary implementation of a charging method of a battery system according to an exemplary embodiment of the present disclosure.

Fig. 5 is a schematic view of a charging device of a battery system according to an exemplary embodiment of the present disclosure.

Fig. 6 is a schematic diagram of an electronic device, according to an exemplary embodiment of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and should be considered as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Fig. 1 is a schematic diagram of an exemplary embodiment of a charging method of a battery system according to the present application, as shown in fig. 1, including the steps of:

s101, judging whether a battery system meets a charging starting condition or not, wherein the battery system comprises a plurality of battery modules.

Fig. 2 is a schematic diagram of a frame of a battery system according to the present application, and as shown in fig. 2, the battery system includes a plurality of battery modules connected in series, a battery management system (Battery Management System, BMS), a battery system charging module, and a charging interface and a discharging interface (one in practice) to the outside.

The battery system charging module and each battery module are designed with a charging branch, that is, the battery system charging module can directly charge the battery module based on the charging branch of the battery module. The charging branches between the battery system charging module and each battery module are provided with a switch (contactor or MOS, etc., not shown in fig. 2).

In the application, the BMS collects monitoring data of each battery module in the battery system and judges whether the battery system meets the charging starting condition according to the monitoring data. For example, the BMS may determine whether the charging condition is satisfied according to a preset charging start condition. These conditions may include minimum voltage requirements, minimum residual capacity requirements, minimum ambient temperature requirements, etc. If the monitoring data of any one of the battery modules does not satisfy these conditions, the BMS prohibits the charging operation to protect the safety and performance of the battery system.

S102, if the battery system meets the charging starting condition, controlling the battery system to start charging, and collecting real-time battery parameters of each battery module in real time in the charging process of the battery system.

Under the condition that the battery system meets the charging starting condition, the BMS can control the battery system to start charging, and real-time battery parameters of each battery module, such as voltage, temperature, residual capacity and the like of the battery module, are collected in real time through the BMS.

And S103, determining the charging current corresponding to each battery module based on the real-time battery parameters, and dynamically updating the charging current every preset time interval.

Based on real-time battery parameters, such as voltage, temperature, remaining capacity, etc., an algorithm or logic may be used to determine the corresponding charging current for each battery module. The algorithm can be designed according to the state and performance characteristics of the battery module to optimize the charging efficiency and protect the safety and the service life of the battery. For example, if the voltage and temperature of a certain battery module are low, a larger charging current can be distributed, so that all battery modules can be ensured to be basically full at the same time as much as possible.

Meanwhile, in the charging process of the battery system, the charging current can be dynamically updated every preset time interval. Therefore, the charging efficiency can be further improved according to the real-time state change of the battery modules and the system requirement, and each battery module is ensured to be properly charged.

S104, aiming at any battery module, a charging module in the battery system is controlled to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state.

The method can be specifically understood by the following steps:

s1041, the BMS sends the charging current corresponding to each battery module to the charging module, and the charging module charges each battery module according to the charging current corresponding to each battery module.

S1042, the charging state of each battery module is monitored in real time, including voltage variation, residual capacity increase, etc.

And S1043, stopping charging the currently charged battery module after the battery module reaches a full-charge state, and continuously charging other modules which do not reach the full-charge state.

Repeating the steps S1041-S1043 until all the battery modules reach the full-charge state.

It is to be understood that the scheme of the application is mainly aimed at a battery module, but in practical application, each battery monomer in the battery module can be directly charged according to the scheme, namely, a single battery can be charged and controlled by a battery system charging module, and only the number of output ports of the charging module is increased.

The embodiment of the application provides a charging method of a battery system, which comprises a plurality of battery modules by judging whether the battery system meets a charging starting condition or not; if the battery system meets the charging starting condition, controlling the battery system to start charging, and collecting real-time battery parameters of each battery module in real time in the charging process of the battery system; based on the real-time battery parameters, determining the charging current corresponding to each battery module, and dynamically updating the charging current every preset time length; for any battery module, a charging module in the battery system is controlled to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state. The application dynamically determines the charging current corresponding to each battery module based on the acquired real-time battery parameters of each battery module, thus flexibly adjusting the charging current according to the actual state and the requirement of the battery module, charging in an optimal mode, ensuring that all the battery modules have consistent states in the charging process, avoiding the occurrence of the wooden barrel effect, and basically completing the charging of all the battery modules at the same time, thereby being beneficial to improving the charging efficiency and the charging quality, reducing the charging time, better protecting the battery modules and prolonging the service life of the battery modules.

Fig. 3 is a schematic diagram of an exemplary embodiment of a charging method of a battery system according to the present application, as shown in fig. 3, including the steps of:

s301, judging whether a battery system meets a charging starting condition or not, wherein the battery system comprises a plurality of battery modules.

Collecting a monitoring voltage of each battery module included in the battery system; if the monitoring voltage of any battery module is lower than the voltage set value, acquiring the power-on loop state and the external charger state of the battery system; and judging whether the battery system meets the charging condition according to the state of the power-on loop and the state of the external charger. If the charging branch between the charging module of the battery system and each battery module is in a connection state and the charging interface of the battery system is successfully connected with the external charger, judging that the battery system meets the charging starting condition. This ensures that the battery system has the necessary conditions to ensure the safety and effectiveness of the charging process before starting the charging.

Different external chargers can be arranged under different charging situations. For example, when the electric automobile is applied, the charging interface is connected with a vehicle-mounted charger in the automobile in an alternating current charging mode, and the charging interface is connected with a direct current charging pile in a direct current charging mode; when the data center is applied, the power supply is connected with an uninterruptible power supply of the data center; when in energy storage application, the energy storage system is connected with an external energy storage converter (Power Conversion System, PCS).

S302, if the battery system meets the charging starting condition, controlling the battery system to start charging, and collecting real-time battery parameters of each battery module in real time in the charging process of the battery system, wherein the real-time battery parameters comprise real-time temperature values, real-time voltage values, real-time battery charge capacity values and battery module health degrees of each battery module.

Under the condition that the battery system meets the charging starting condition, the BMS can control the battery system to start charging, and real-time battery parameters of each battery module, such as real-time temperature values, real-time voltage values, real-time battery charge capacity values and battery module health degrees of each battery module, are collected in real time through the BMS.

For example, if the battery system includes N battery modules In total, according to the real-time battery parameters of each battery module collected In real time by the BMS, the voltages of the N battery modules are respectively denoted as U1 and U2 … Un, and the currents of the N battery modules are respectively denoted as I1 and I2 … In.

S303, determining a target battery module from the plurality of battery modules according to the real-time voltage value or the real-time battery charge capacity value.

As one possible way, a battery module having the smallest real-time voltage value among the plurality of battery modules is used as the target battery module. Selecting the battery module as a target can prevent battery damage or failure due to low voltage, and helps to protect the stability and life of the entire battery pack.

As another implementation manner, a battery module with the smallest real-time battery charge capacity value among the plurality of battery modules is used as the target battery module. The battery module with the minimum battery charge capacity value is closer to the discharge state, can be preferentially used for power supply, can enhance the power supply capacity of the whole battery pack, and avoids the system losing power supply due to insufficient battery capacity.

The two modes of determining the target battery module can be alternatively used.

S304, taking the preset maximum current value as the charging current corresponding to the target battery module.

And obtaining a preset maximum current value set by the battery system as I, and taking the preset maximum current value as a charging current corresponding to the target battery module.

For example, if it is determined that the target battery module is the mth battery module, the charging current corresponding to the mth battery module is determined to be the preset maximum current value I.

And S305, taking the battery modules except the target battery module as the remaining battery modules, and determining a first weight coefficient corresponding to each remaining battery module according to the real-time temperature value, the real-time voltage value and the health degree of the battery module of each remaining battery module.

And taking the battery modules except the target battery module as the rest battery modules.

And acquiring a preset first mapping relation of the real-time temperature value, the real-time voltage value, the health degree of the battery module and the weight coefficient. The first mapping relationship may be preset according to an empirical value. And inquiring a first mapping relation according to the real-time temperature value, the real-time voltage value and the health degree of the battery modules of each remaining battery module, and determining a first weight coefficient of each remaining battery module. Wherein the first weight coefficients are all greater than 0 and less than 1.

Illustratively, the first weight coefficient of the 1 st battery module may be denoted as K1, the first weight coefficient of the 2 nd battery module may be denoted as K2, and so on.

S306, determining the charging current of each remaining battery module according to the first weight coefficient and the preset maximum current value.

For example, if the first weight coefficient of the 1 st battery module is K1, the charging current of the 1 st battery module is i1=k1×i; and if the first weight coefficient of the 2 nd battery module is K2, the charging current of the 2 nd battery module is I2=k2×I, and so on, and the charging current of each remaining battery module is determined.

S307, dynamically updating the charging current every preset time length.

For example, the preset time period may be set to 2 seconds, i.e., every 2 seconds, and the charging current of each battery module is recalculated according to the above scheme to dynamically update the charging current.

S308, aiming at any battery module, a charging module in the battery system is controlled to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state.

For any battery module, a charging module in the battery system is controlled to charge the battery module according to charging current based on a charging branch corresponding to the battery module until all the battery modules reach a full-charge state; in the charging process of each battery module, if any battery module is monitored to reach a full-charge state, the charging branch corresponding to the battery module is disconnected to prevent overcharge, damage to the battery module is avoided, and the safety and reliability of the whole battery system are improved.

The charging scheme provided by the application can ensure that each battery module is charged respectively and can achieve the aim of basically filling simultaneously.

In the embodiment of the application, when a certain battery module is replaced, the BMS can judge according to the state data of the replaced new battery module, and then control the battery system charging module to charge the battery module of the branch, so that each battery module can be ensured to charge at a proper rate without excessively fast or excessively slow charging. Therefore, the stress and the loss of the battery can be reduced, and the service life of the battery can be prolonged.

Fig. 4 is a schematic diagram of an exemplary embodiment of a charging method of a battery system according to the present application, as shown in fig. 4, including the steps of:

s401, judging whether a battery system meets a charging starting condition or not, wherein the battery system comprises a plurality of battery modules.

For the specific implementation of step S401, reference may be made to the specific description of the relevant parts in the above embodiment, and no further description is given here.

S402, if the battery system meets the charging starting condition, controlling the battery system to start charging, and collecting real-time battery parameters of each battery module in real time in the charging process of the battery system, wherein the real-time battery parameters comprise real-time temperature values of each battery module and health degrees of the battery modules.

Under the condition that the battery system meets the charging starting condition, the BMS can control the battery system to start charging, and real-time battery parameters of each battery module, such as real-time temperature values of each battery module and health of the battery modules, are collected in real time through the BMS.

S403, determining a second weight coefficient corresponding to each battery module according to the real-time temperature value and the health degree of the battery module.

Acquiring a second mapping relation among the real-time temperature value, the health degree of the battery module and the weight coefficient; and inquiring a second mapping relation according to the real-time temperature value of each battery module and the health degree of the battery module, and determining a second weight coefficient corresponding to each battery module. Wherein the second weight coefficients are all greater than 0 and less than or equal to 1.

For example, the second weight coefficient of the 1 st battery module may be denoted as K1', the second weight coefficient of the 2 nd battery module may be denoted as K2', and so on.

S404, determining the charging current of each battery module according to the second weight coefficient and the preset maximum current value.

And acquiring a preset maximum current value set by the battery system as I, and determining the charging current of each battery module according to the second weight coefficient and the preset maximum current value.

For example, if the second weight coefficient of the 1 st battery module is K1', the charging current of the 1 st battery module is I1' =k1 ' ×i; and if the second weight coefficient of the 2 nd battery module is K2', the charging current of the 2 nd battery module is I2' =k2 ' ×I, and the like, and the charging current of each battery module is determined.

S405, dynamically updating the charging current every preset time interval.

S406, for any battery module, a charging module in the battery system is controlled to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state.

For the specific implementation of steps S405 to S406, reference may be made to the specific description of the relevant parts in the above embodiments, and the detailed description will not be repeated here.

According to the embodiment of the application, the second weight coefficient corresponding to each battery module is determined based on the preset real-time temperature value, the second mapping relation of the health degree of the battery module and the weight coefficient, so that the charging current of each battery module is determined in combination with the preset maximum current value, the charging module of the battery system is controlled to charge the battery modules based on the charging current, and each battery module can be ensured to be charged at a proper rate without excessively rapid or excessively slow charging. Therefore, the stress and the loss of the battery can be reduced, and the service life of the battery can be prolonged.

Furthermore, the scheme can support the application of the mixed use of the lead-acid battery and the lithium battery system, and the power-assisted green low-carbon data center is low in cost on the premise of ensuring safety and reliability.

Fig. 5 is a schematic diagram of a charging device of a battery system according to the present application, as shown in fig. 5, the charging device 500 of the battery system includes a judging module 501, an acquisition module 502, a determining module 503 and a control module 504, wherein:

the determining module 501 is configured to determine whether a battery system meets a charging start condition, where the battery system includes a plurality of battery modules.

The acquisition module 502 is configured to control the battery system to start charging if the battery system meets a charging start condition, and acquire real-time battery parameters of each battery module in real time during the charging process of the battery system.

The determining module 503 is configured to determine a charging current corresponding to each battery module based on the real-time battery parameters, and dynamically update the charging current every preset time period.

The control module 504 is configured to control, for any one of the battery modules, the charging module in the battery system to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state.

The device dynamically determines the charging current corresponding to each battery module based on the acquired real-time battery parameters of each battery module, so that the charging current can be flexibly adjusted according to the actual state and the requirements of the battery modules, and the battery module is charged in an optimal mode. This helps improving charge efficiency and charge quality, reduces charge time to can protect battery module better, prolong its life.

Further, the real-time battery parameters include a real-time temperature value, a real-time voltage value, a real-time battery charge capacity value, and a health of the battery module, and the determining module 503 is further configured to: determining a target battery module from a plurality of battery modules according to the real-time voltage value or the real-time battery charge capacity value; taking the preset maximum current value as the charging current corresponding to the target battery module; taking the battery modules except the target battery module as the remaining battery modules, and determining a first weight coefficient corresponding to each remaining battery module according to the real-time temperature value, the real-time voltage value and the battery module health of each remaining battery module; and determining the charging current of each remaining battery module according to the first weight coefficient and the preset maximum current value.

Further, the determining module 503 is further configured to: taking the battery module with the smallest real-time voltage value of the plurality of battery modules as a target battery module; or, the battery module with the smallest real-time battery charge capacity value in the plurality of battery modules is used as the target battery module.

Further, the determining module 503 is further configured to: acquiring a first mapping relation of a real-time temperature value, a real-time voltage value, the health degree of the battery module and a weight coefficient; and inquiring a first mapping relation according to the real-time temperature value, the real-time voltage value and the health degree of the battery modules of each remaining battery module, and determining a first weight coefficient of each remaining battery module.

Further, the real-time battery parameters include a real-time temperature value of each battery module and a health degree of the battery module, and the determining module 503 is further configured to: determining a second weight coefficient corresponding to each battery module according to the real-time temperature value of each battery module and the health degree of the battery module; and determining the charging current of each battery module according to the second weight coefficient and the preset maximum current value.

Further, the determining module 503 is further configured to: acquiring a second mapping relation among the real-time temperature value, the health degree of the battery module and the weight coefficient; and inquiring a second mapping relation according to the real-time temperature value of each battery module and the health degree of the battery module, and determining a second weight coefficient corresponding to each battery module.

Further, the control module 504 is further configured to: for any battery module, a charging module in the battery system is controlled to charge the battery module according to charging current based on a charging branch corresponding to the battery module until all the battery modules reach a full-charge state; and in the charging process of each battery module, if any battery module is monitored to reach a full-charge state, disconnecting a charging branch corresponding to the battery module.

Further, the judging module 501 is further configured to: collecting a monitoring voltage of each battery module included in the battery system; if the monitoring voltage of any battery module is lower than the voltage set value, acquiring the power-on loop state and the external charger state of the battery system; and judging whether the battery system meets the charging condition according to the state of the power-on loop and the state of the external charger.

In the technical scheme of the disclosure, the acquisition, storage, application and the like of the related user personal information all conform to the regulations of related laws and regulations, and the public sequence is not violated.

According to embodiments of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.

Fig. 6 illustrates a schematic block diagram of an example electronic device 600 that may be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the disclosure described and/or claimed herein.

As shown in fig. 6, the apparatus 600 includes a computing unit 601 that can perform various appropriate actions and processes according to a computer program stored in a Read Only Memory (ROM) 602 or a computer program loaded from a storage unit 608 into a Random Access Memory (RAM) 603. In the RAM 603, various programs and data required for the operation of the device 600 may also be stored. The computing unit 601, ROM 602, and RAM 603 are connected to each other by a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.

Various components in the device 600 are connected to the I/O interface 605, including: an input unit 606 such as a keyboard, mouse, etc.; an output unit 607 such as various types of displays, speakers, and the like; a storage unit 608, such as a magnetic disk, optical disk, or the like; and a communication unit 609 such as a network card, modem, wireless communication transceiver, etc. The communication unit 609 allows the device 600 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The computing unit 601 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of computing unit 601 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 601 performs the respective methods and processes described above, such as a charging method of a battery system. For example, in some embodiments, the method of charging a battery system may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as storage unit 608. In some embodiments, part or all of the computer program may be loaded and/or installed onto the device 600 via the ROM 602 and/or the communication unit 609. When the computer program is loaded into the RAM 603 and executed by the computing unit 601, one or more steps of the charging method of the battery system described above may be performed. Alternatively, in other embodiments, the computing unit 601 may be configured to perform the charging method of the battery system by any other suitable means (e.g., by means of firmware).

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application specific integrated circuits (AS ics), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the internet.

The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server may be a cloud server, a server of a distributed system, or a server incorporating a blockchain.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel or sequentially or in a different order, provided that the desired results of the technical solutions of the present disclosure are achieved, and are not limited herein.

The above detailed description should not be taken as limiting the scope of the present disclosure. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.

Claims

1. A method of charging a battery system, comprising:

judging whether a battery system meets a charging starting condition or not, wherein the battery system comprises a plurality of battery modules;

if the battery system meets the charging starting condition, controlling the battery system to start charging, and collecting real-time battery parameters of each battery module in real time in the charging process of the battery system;

based on the real-time battery parameters, determining charging current corresponding to each battery module, and dynamically updating the charging current every preset time length;

And aiming at any battery module, controlling a charging module in the battery system to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full-charge state.

2. The method of claim 1, wherein the real-time battery parameters include a real-time temperature value, a real-time voltage value, a real-time battery charge capacity value, and a battery module health of each of the battery modules, and the determining the corresponding charging current of each of the battery modules based on the real-time battery parameters comprises:

determining a target battery module from the plurality of battery modules according to the real-time voltage value or the real-time battery charge capacity value;

taking the preset maximum current value as the charging current corresponding to the target battery module;

taking the battery modules except the target battery module as the remaining battery modules, and determining a first weight coefficient corresponding to each remaining battery module according to the real-time temperature value, the real-time voltage value and the battery module health of each remaining battery module;

and determining the charging current of each residual battery module according to the first weight coefficient and the preset maximum current value.

3. The method of claim 2, wherein the determining a target battery module from the plurality of battery modules based on the real-time voltage value or the real-time battery charge capacity value comprises:

taking the battery module with the smallest real-time voltage value of the battery modules as the target battery module; or,

and taking the battery module with the smallest real-time battery charge capacity value of the battery modules as the target battery module.

4. The method of claim 3, wherein the determining the first weight coefficient corresponding to each of the remaining battery modules according to the real-time temperature value, the real-time voltage value, and the battery module health of each of the remaining battery modules comprises:

acquiring a first mapping relation of a real-time temperature value, a real-time voltage value, the health degree of the battery module and a weight coefficient;

and inquiring the first mapping relation according to the real-time temperature value, the real-time voltage value and the health degree of the battery modules of each residual battery module, and determining a first weight coefficient of each residual battery module.

5. The method of claim 1, wherein the real-time battery parameters include a real-time temperature value and a battery module health for each of the battery modules, and wherein determining the corresponding charging current for each of the battery modules based on the real-time battery parameters comprises:

Determining a second weight coefficient corresponding to each battery module according to the real-time temperature value of each battery module and the health of the battery module;

and determining the charging current of each battery module according to the second weight coefficient and a preset maximum current value.

6. The method of claim 5, wherein the determining the corresponding second weight coefficient for each battery module according to the real-time temperature value and the battery module health for each battery module comprises:

acquiring a second mapping relation among the real-time temperature value, the health degree of the battery module and the weight coefficient;

and inquiring the second mapping relation according to the real-time temperature value of each battery module and the health degree of each battery module, and determining a second weight coefficient corresponding to each battery module.

7. The method according to any one of claims 1-6, wherein the controlling the charging module in the battery system to charge the battery module based on the charging current corresponding to the battery module until all the battery modules reach a full state comprises:

for any battery module, controlling a charging module in the battery system to charge the battery module according to the charging current based on a charging branch corresponding to the battery module until all the battery modules reach a full-charge state; wherein,

And in the charging process of each battery module, if any battery module is monitored to reach a full-charge state, disconnecting a charging branch corresponding to the battery module.

8. The method of claim 7, wherein the determining whether the battery system satisfies a charge start condition comprises:

collecting a monitoring voltage of each battery module included in the battery system;

if the monitoring voltage of any battery module is lower than the voltage set value, acquiring the power-on loop state and the external charger state of the battery system;

and judging whether the battery system meets the charging condition according to the state of the power-on loop and the state of the external charger.

9. A charging device of a battery system, comprising:

the judging module is used for judging whether a battery system meets a charging starting condition or not, and the battery system comprises a plurality of battery modules;

the acquisition module is used for controlling the battery system to start charging if the battery system meets the charging starting condition, and acquiring real-time battery parameters of each battery module in real time in the charging process of the battery system;

the determining module is used for determining the charging current corresponding to each battery module based on the real-time battery parameters and dynamically updating the charging current every preset time length;

And the control module is used for controlling the charging module in the battery system to charge the battery module based on the charging current corresponding to the battery module aiming at any battery module until all the battery modules reach a full-charge state.

10. The apparatus of claim 9, wherein the real-time battery parameters include a real-time temperature value, a real-time voltage value, a real-time battery charge capacity value, and a battery module health for each of the battery modules, the determination module further configured to:

11. The apparatus of claim 10, wherein the means for determining is further configured to:

12. The apparatus of claim 11, wherein the means for determining is further configured to:

13. The apparatus of claim 9, wherein the real-time battery parameters include a real-time temperature value and a battery module health for each of the battery modules, the determination module further configured to:

14. The apparatus of claim 13, wherein the means for determining is further configured to:

15. The apparatus of any of claims 9-14, wherein the control module is further to:

16. The apparatus of claim 15, wherein the means for determining is further configured to:

17. An electronic device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-8.

18. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method of any one of claims 1-8.

19. A computer program product comprising a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1-8.