WO2024066323A1

WO2024066323A1 - Lithium-ion battery pack wireless control method, system, and vehicle

Info

Publication number: WO2024066323A1
Application number: PCT/CN2023/090531
Authority: WO
Inventors: 雷奥; 刘轶鑫; 刘鹏飞
Original assignee: 中国第一汽车股份有限公司
Priority date: 2022-09-29
Filing date: 2023-04-25
Publication date: 2024-04-04
Also published as: CN115601948A

Abstract

Disclosed are a lithium-ion battery pack wireless control method, a system and a vehicle. The method comprises the steps: a master controller waking a slave controller by means of wireless broadcast; the slave controller receiving a sampling instruction from the main controller; the slave controller collecting battery information, and sending same to the main controller by means of wireless communication; the master controller receiving the battery information, and completing sampling in a current period. The system and the vehicle correspond to the control method. The present invention, by means of adopting a time synchronized and reliable data transmission method, realizes synchronous acquisition of wireless battery management system data, increasing sampling precision, decreasing a data transmission error rate, and enhancing system robustness. By means of using a wireless communication BMS mode, power consumption is low, reliability is high, and costs are moderate. Furthermore, a wiring harness can be reduced in a wireless communication mode, a Pack structure is simplified, and the method has important significance for increasing Pack energy density. Moreover, a communication connection between high and low voltages is removed, which is safer compared with conventional communication means.

Description

A lithium-ion battery pack wireless control method, system and vehicle

Technical Field

The present invention relates to a wireless control method, system and vehicle, and in particular to a wireless control method, system and vehicle for a lithium-ion battery pack.

Background technique

With the development and popularization of new energy technologies, the safety of new energy vehicles has received increasing attention. In order to ensure the safety and reliability of power batteries in new energy vehicles, the importance of battery management systems has become increasingly prominent. Its function is to monitor the battery status, prevent overcharge and overdischarge of the battery, keep the battery working in a safe state, and extend the battery life.

The current data transmission method of the battery management system is mainly through wired connection (CAN bus/UART bus), which requires a lot of connector connections, wiring harness routing and layout space. Due to the small space of the battery pack, installation is difficult and the space utilization rate is low. At the same time, the wiring harness and connector are prone to aging, false connection and other faults as the use time increases in the complex temperature and vibration environment of the vehicle, resulting in safety hazards in the use of the vehicle.

Summary of the invention

The purpose of the present invention is to provide a lithium-ion battery pack wireless control method, system and vehicle, which realizes the synchronous data collection of wireless battery management system by adopting time synchronization and reliable data transmission method, and solves the shortcomings of the prior art.

The present invention provides the following scheme:

A wireless control method for a lithium-ion battery pack, specifically comprising:

The master controller wakes up the slave controller through wireless broadcasting;

The slave controller receives a sampling instruction from the master controller;

The slave controller collects battery information and sends it to the master controller via wireless communication;

The main controller receives the battery information and completes the sampling of this cycle.

Furthermore, each slave controller sends a wake-up completion flag after receiving the wake-up signal from the master controller.

Furthermore, if the master controller does not receive the wake-up completion flag from the slave controller, it resends the wake-up instruction.

Furthermore, it also includes: after completing the sampling of the current cycle, entering the next sampling cycle and cyclic sampling.

Furthermore, the battery information includes battery cell voltage and battery cell temperature.

Furthermore, there are four slave controllers.

A wireless control system for a lithium-ion battery pack, specifically comprising:

The slave controller wake-up module is used by the master controller to wake up the slave controller through broadcasting;

The main controller sampling instruction receiving module is used to receive the sampling instruction from the main controller from the controller;

A battery information collection and transmission module is used to collect battery information from the controller and send it to the main controller via wireless communication;

The battery information receiving module is used by the main controller to receive battery information and complete the sampling of this cycle.

An electronic device comprises: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; a computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the method.

A computer-readable storage medium stores a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of the method.

A vehicle, comprising:

An electronic device for realizing a wireless control method for a lithium-ion battery pack;

A processor, the processor runs a program, and when the program runs, the processor performs the steps of the method for implementing the wireless control of the lithium-ion battery pack on the data output from the electronic device;

The storage medium is used to store a program, and when the program is running, the steps of the method for realizing wireless control of a lithium-ion battery pack are executed for data output from an electronic device.

Compared with the prior art, the present invention has the following advantages:

By adopting time synchronization and reliable data transmission methods, the wireless battery management system can achieve synchronous data collection, improve sampling accuracy, reduce data transmission bit error rate, and enhance system robustness.

The wireless communication BMS method has low power consumption, high reliability and moderate cost. At the same time, the wireless communication method can reduce the wiring harness in the package and simplify the Pack structure, which is of great significance for improving the Pack energy density. And the communication connection between high and low voltage is cancelled, which is safer than the traditional communication method. At the same time, wireless communication reduces the risk of communication failure and avoids the possibility of the entire network being paralyzed if a certain connection point in the network is interrupted. The robustness of wireless communication will be better, the failure of a single point will have limited impact on the whole, and it is also more flexible for adding and deleting new nodes in the network.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG. 1 is a flow chart of a lithium-ion battery wireless control method.

FIG2 is an architecture diagram of a lithium-ion battery wireless control system.

FIG3 is a structural diagram of a wireless battery management system in an embodiment.

FIG4 is a flowchart of the wireless battery management system.

FIG. 5 is one of the partial enlarged views of FIG. 4 .

FIG. 6 is a second partial enlarged view of FIG. 4 .

FIG. 7 is a time synchronization sequence diagram of a wireless communication battery management system.

FIG8 is a flow chart of a data transmission method of a wireless communication battery management system.

FIG. 9 is a flow chart of a method for diagnosing and processing a fault of a wireless communication battery management system.

FIG. 10 is a system architecture diagram of an electronic device.

Detailed ways

The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The wireless control method of a lithium-ion battery pack as shown in FIG1 specifically includes:

Step S1, the master controller wakes up the slave controller through wireless broadcasting;

Step S2, the slave controller receives a sampling instruction from the master controller;

Step S3, collecting battery information from the controller and sending it to the main controller via wireless communication;

Step S4: the main controller receives the battery information and completes the sampling of this cycle.

Preferably, each slave controller sends a wake-up completion flag after receiving the wake-up signal from the master controller.

Preferably, if the master controller does not receive the wake-up completion flag from the slave controller, it resends the wake-up instruction.

Preferably, the method further includes: after completing the sampling of the current cycle, entering the next sampling cycle and performing cyclic sampling.

Preferably, the battery information includes battery cell voltage and battery cell temperature.

Preferably, there are four slave controllers.

For the method steps disclosed in the above embodiments, for the purpose of simple description, the method steps are described as a series of action combinations, but those skilled in the art should know that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. The embodiments are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

The wireless control system of lithium-ion battery pack shown in FIG2 specifically includes:

Exemplary:

The system includes one master controller and four slave controllers;

The master controller is used to receive data sent by the slave controller and send acquisition instructions, and communicate with the slave controller through wireless communication;

The main controller includes a radio frequency antenna, a wireless module, a bridge module and a processor, and the processor is connected to the wireless module via an SPI interface.

The slave controller is used to send the voltage and temperature data of the battery cell, and the master controller and the slave controller communicate wirelessly;

The slave controller includes: a voltage sampling module, each module collects the lithium-ion battery voltage, and the controller collects the battery voltage. Each voltage sampling module is connected through daisy chain communication, and is connected to the bridge module through the daisy chain. The bridge module is connected to the wireless module and transmits data through the radio frequency antenna.

The master controller is used to send a sampling start signal to the first slave controller, the second slave controller, the third slave controller and the fourth slave controller. After receiving the signal, the first slave controller, the second slave controller, the third slave controller and the fourth slave controller determine the sampling start time according to the time synchronization strategy, and then perform voltage sampling of the battery cells at the same time.

After the sampling is completed, each slave controller transmits the voltage data to the master controller wirelessly and waits for the next sampling command.

It is worth noting that although only the slave controller wake-up module, the main controller sampling instruction receiving module, the battery information acquisition and sending module, and the battery information receiving module are disclosed in this embodiment, it does not mean that the composition of the present system is limited to the above-mentioned basic functional modules. On the contrary, what this embodiment wants to express is: on the basis of the above-mentioned basic functional modules, those skilled in the art can arbitrarily add one or more functional modules in combination with the prior art to form an infinite number of embodiments or technical solutions. In other words, this system is open rather than closed. Just because this embodiment only discloses individual basic functional modules, it cannot be considered that the scope of protection of the claims of the present invention is limited to the disclosed basic functional modules. At the same time, for the convenience of description, the above devices are described in terms of functions and are described separately in various units and modules. Of course, when implementing the present invention, the functions of each unit and module can be implemented in the same or one or more software and/or hardware.

The device implementation described above is merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present implementation scheme. Those of ordinary skill in the art may understand and implement it without creative work.

The specific implementation shown in FIG3 provides a specific application scenario of a wireless control system for a lithium-ion battery pack:

The main controller includes a radio frequency antenna, a wireless module, a bridge module and a processor.

The first slave controller includes three voltage sampling modules, each module collects 16 lithium-ion battery voltages, and the controller collects a total of 48 battery voltages. Each voltage sampling module is connected through daisy chain communication, and is connected to the bridge module through the daisy chain. The bridge module is connected to the wireless module and transmits data through the RF antenna.

The second slave controller includes 3 voltage sampling modules, each module collects 16 lithium-ion battery voltages, and the controller collects a total of 48 battery voltages. Each voltage sampling module is connected through daisy chain communication, and is connected to the bridge module through the daisy chain. The bridge module is connected to the wireless module and transmits data through the RF antenna.

The third slave controller includes 3 voltage sampling modules, each module collects 16 lithium-ion battery voltages, and the controller collects a total of 48 battery voltages. Each voltage sampling module is connected through daisy chain communication, and is connected to the bridge module through the daisy chain. The bridge module is connected to the wireless module and transmits data through the RF antenna.

The fourth slave controller includes 3 voltage sampling modules, each module collects 16 lithium-ion battery voltages, and the controller collects a total of 48 battery voltages. Each voltage sampling module is connected through daisy chain communication, and is connected to the bridge module through the daisy chain. The bridge module is connected to the wireless module and transmits data through the RF antenna.

The main controller includes:

The processor is connected to the wireless module via an SPI interface, and the wireless module is communicatively connected to the first slave control wireless module, the second slave control wireless module, the third slave control wireless module, and the fourth slave control wireless module.

The master controller is used to send a sampling start signal to the first slave controller, the second slave controller, the third slave controller and the fourth slave controller. After receiving the signal, the first slave controller, the second slave controller, the third slave controller and the fourth slave controller determine the sampling start time according to the timestamp, and then perform voltage sampling of the battery cell at the same time. After the sampling is completed, each slave controller transmits the voltage data to the master controller wirelessly and waits for the next sampling command.

The slave controller includes:

Three voltage sampling modules, each with 16 voltage sampling channels, are used to collect lithium-ion battery voltage. Each voltage sampling module is connected to each other through daisy chain communication, connected to the bridge module through the daisy chain, and connected to the wireless module through the RF antenna to transmit data.

As shown in FIG. 4 , FIG. 5 , and FIG. 6 , an embodiment of the present invention provides a wireless communication battery management system, and the system structure is as follows:

The master controller is wirelessly connected to the first, second, third and fourth slave controllers. At the same time, the first slave controller, the second slave controller, the third slave controller and the fourth slave controller are connected via wireless communication, and the communication path change is achieved through the dynamic routing function.

The first slave controller is used to collect voltage data of 48 battery strings;

The second slave controller is used to collect voltage data of 48 battery strings;

The third slave controller is used to collect voltage data of 48 battery strings;

The fourth slave controller is used to collect voltage data of 48 battery strings;

When the main controller periodically samples the battery voltage, the processor sends a collection command to the first slave controller, the second slave controller, the third slave controller, and the fourth slave controller through the wireless module. The command is sent to the wireless module through the bridge chip and sent out through the RF antenna. After the antennas of the first slave controller, the second slave controller, the third slave controller, and the fourth slave controller receive the sampling command, the collection command is sent to the voltage collection module, the current collection module, and the temperature detection module through the bus through the bridge chip of each slave controller. At the same time, the first single-chip microcomputer, the second single-chip microcomputer, and the third single-chip microcomputer synchronize the sampling time of each other through the first wireless transmission module, the second wireless transmission module, and the third wireless transmission module, respectively, so that the voltage, current, and temperature can be collected synchronously.

In conjunction with FIG. 4 , FIG. 5 , and FIG. 6 , the workflow of this embodiment is as follows:

1. In the wireless battery management system, after the main controller works, it wakes up all slave controllers at the same time in the form of broadcasting;

2. After receiving the wake-up signal from the master controller, each slave controller sends a wake-up completion flag. If the master controller does not receive the wake-up completion flag from the slave controller, it resends the wake-up command. After three wake-up failures, the slave controller enters the fault state.

3. The master controller sends a sampling instruction, and the slave controller synchronizes the local time after receiving the sampling instruction;

4. After completing time synchronization, the slave controller starts to collect data on cell voltage, cell temperature, balancing, and fault diagnosis status, and sends the data to the master controller via wireless communication;

5. If data transmission fails, wireless information frequency modulation is performed, data is resent, and the slave controller enters a fault state;

6. After the main controller successfully sends the collection, balancing, and fault diagnosis data, it completes the processing of this cycle and enters the next sampling cycle.

The time synchronization sequence diagram of the wireless communication battery management system shown in FIG7 includes the following steps:

1: The master controller issues a time synchronization request and sends a message with a timestamp Tts1 to the slave controller;

2: After the slave controller receives the synchronization instruction from the master controller, the local time is marked as T1. At this time, T1 = Tts1 + Tdelay1 + Tjitter1 + Tsend1. The meaning of each variable in the above formula is:

Tdelay1 is the transmission delay, Tjitter1 is the error between the slave controller clock and the master controller clock, and Tsend1 is the time for the master to send data;

3: After receiving the synchronization command from the controller, it immediately sends a synchronization confirmation command with a timestamp Tts2 to the master controller;

4: After the master controller receives the synchronization confirmation command from the slave controller, the local time is marked as T2. At this time, T2 = Tts2 + Tdelay2 + Tjitter2 + Tsend2, Tdelay2 is the transmission delay, Tjitter2 is the error between the slave controller clock and the master controller clock, and Tsend1 is the slave controller sending data time;

5: The slave controller sends a confirmation command immediately after receiving the command, Tjitter1 = -Tjitter2, Tdelay1 = Tdelay2;

6: Transmission delay, Tdelay is:

7: Clock error, Tjitter is:

As shown in FIG8 , an embodiment of the present invention provides a data transmission method for a wireless communication battery management system, and the method steps are as follows:

1: Divide n physical channels according to the wireless transmission frequency band;

2: Test the communication quality of all channels and build a list of available channels based on the data delivery rate indicator;

3: Confirm the number of communicable channels. The number of channel offset values is equal to the number of available channels.

4: Confirm the number of wireless nodes in the system and assign the same channel offset and time slot offset to the two nodes that need to communicate;

5: Allocate time slot offset and channel offset;

6: Calculate the physical channel of communication according to the absolute time slot number of the current communication;

7: The two communication nodes start wireless communication and send and receive data;

8: Confirm whether the communication is successful. If the communication is not successful, recalculate the physical channel for communication based on the current new absolute time slot number and restart the communication;

9: After successful communication, the next communication cycle will be performed.

Exemplary: This embodiment divides 16 physical channels according to the 2.4GHz ISM frequency band, judges the signal quality through the data delivery rate index (>99.5%), builds a list of available channels and their number, and sets the communication channel number to the available channel number;

Confirm whether the four wireless nodes in the system are online, calculate the communication frequency band for the channel offset and time slot offset of every two wireless communication nodes;
Frequency＝LUT(channelOffset+ASN)MODnChannel

LUT is the list of available channels, nChannel is the number of available channels, ASN is the absolute time slot number, and the communication frequency is confirmed according to the lookup table.

As shown in FIG9 , the present invention further discloses a method for diagnosing and processing a fault of a wireless communication battery management system, and the specific method steps include:

Step T1: After detecting a fault in the slave controller, triggering the fault diagnosis state;

Step T2: When the number of slave controller faults is 1, enter safety state 1; A. limit battery discharge power to less than 50%; B. record fault-related diagnostic codes; C. notify the instrument to display the fault and prompt maintenance;

Step T3: When the number of slave controller faults is 2, enter safety state 2: A. limit battery discharge power to less than 15%; B. the instrument displays a fault and prompts maintenance; C. disconnect the contactor according to the time sequence; D. record the fault-related diagnostic code;

Step T4: When the number of slave controller faults is greater than 2, enter safety state 3: A. The discharge power is limited to 0; B. The instrument displays a fault and prompts maintenance; C. The contactor is cut off at the same time; D. The fault-related diagnostic code is recorded.

The embodiment of the present invention disclosed in FIG. 9 can be combined with other embodiments in the specification to form more embodiments, for example: combined with the lithium-ion battery pack wireless control method process shown in FIG. 1 , combined with the lithium-ion battery pack wireless control system shown in FIG. 2 , combined with the embodiment of a vehicle equipped with a lithium-ion battery pack disclosed below, and so on. Each independently implementable scheme can be combined with the embodiment of the present invention to form a new embodiment. That is to say, those skilled in the art can form an infinite number of embodiments based on the embodiments of the present invention and in combination with the prior art, which will not be described in detail due to space limitations.

It can be seen from the technical content disclosed in the embodiments of the present invention that the embodiments of the present invention can not only realize the control of the lithium-ion electron battery by wireless control, but also detect the faults of the slave controller, and dynamically control the slave controller according to the number of faults of the slave controller, and implement different fault diagnosis and control methods for different fault states.

As shown in FIG10 , the present invention also discloses electronic equipment and storage media corresponding to the wireless control method and system for lithium-ion battery packs:

An electronic device, comprising: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; A computer program is stored, and when the computer program is executed by the processor, the processor executes the steps of the wireless control method of the lithium-ion battery pack.

A computer-readable storage medium stores a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of a wireless control method for a lithium-ion battery pack.

The communication bus mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

The electronic device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory. The operating system can be any one or more computer operating systems that control electronic devices through processes, such as Linux operating system, Unix operating system, Android operating system, iOS operating system, or Windows operating system. In the embodiment of the present invention, the electronic device can be a handheld device such as a smart phone or a tablet computer, or can be an electronic device such as a desktop computer or a portable computer, which is not particularly limited in the embodiment of the present invention.

The execution subject of the electronic device control in the embodiment of the present invention may be an electronic device, or a functional module in the electronic device that can call and execute a program. The electronic device may obtain the firmware corresponding to the storage medium. The firmware corresponding to the storage medium is provided by the supplier. The firmware corresponding to different storage media may be the same or different, which is not limited here. After the electronic device obtains the firmware corresponding to the storage medium, the firmware corresponding to the storage medium may be written into the storage medium, specifically, the firmware corresponding to the storage medium may be burned into the storage medium. The process of burning the firmware into the storage medium may be implemented using existing technology, which will not be described in detail in the embodiment of the present invention.

The electronic device can also obtain a reset command corresponding to the storage medium. The reset command corresponding to the storage medium is provided by the supplier. The reset commands corresponding to different storage media may be the same or different, and are not limited here.

At this time, the storage medium of the electronic device is a storage medium in which the corresponding firmware is written, and the electronic device can respond to the reset command corresponding to the storage medium in the storage medium in which the corresponding firmware is written, so that the electronic device resets the storage medium in which the corresponding firmware is written according to the reset command corresponding to the storage medium. The process of resetting the storage medium according to the reset command can be implemented by the existing technology and will not be described in detail in the embodiments of the present invention.

The present invention also discloses a vehicle, which specifically comprises:

A processor, the processor runs a program, and when the program runs, the processor performs the steps of the lithium-ion battery pack wireless control method for the data output from the electronic device;

A storage medium for storing a program, wherein when the program is run, the steps of the wireless control method of the lithium-ion battery pack are executed for the data output from the electronic device;

Compared with the vehicles in the prior art, the vehicles disclosed in the embodiments of the present invention are generally specifically new energy vehicles, which can manage power batteries wirelessly, which is safer than traditional communication methods. At the same time, wireless communication reduces the risk of communication failure and avoids the possibility of the entire network being paralyzed if a certain connection point in the network is interrupted.

Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined.

It should be noted that certain words are used in this specification and claims to refer to specific components. Those skilled in the art should understand that vehicle manufacturers may use different terms to refer to the same component. Elements. This specification and claims do not use the difference in nouns as a way to distinguish elements, but use the difference in the functions of the elements as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be understood as "including but not limited to". The preferred implementation method of the present invention will be described later, but the description is based on the general principles of the specification and is not used to limit the scope of the present invention. The scope of protection of the present invention shall be based on the definition of the claims attached thereto.

The present invention may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present invention may also be practiced in distributed computing environments where tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media, including storage devices.

In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods may also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of the devices, methods, and computer program products according to the various embodiments of the present invention. In this regard, the flowcharts or block diagrams are not intended to be construed as examples. Each box in the block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes 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 and/or the flow chart, and the combination of the boxes in the block diagram and/or the flow chart can be implemented with a dedicated hardware-based system that performs the specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

Those skilled in the art can understand that the remote network device used here includes but is not limited to a computer, a network host, a single network server, a plurality of network server sets or a cloud consisting of a plurality of servers. Here, the cloud server is composed of a large number of computers or network servers based on cloud computing (Cloud Computing), wherein cloud computing is a kind of distributed computing, a super virtual computer consisting of a group of loosely coupled computer sets. In the embodiments of the present invention, the remote network device, the terminal device and the WNS server can communicate with each other through any communication method, including but not limited to mobile communications based on 3GPP, LTE, WIMAX, computer network communications based on TCP/IP, UDP protocols, and short-range wireless transmission methods based on Bluetooth and infrared transmission standards.

The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of the device for distributing messages according to an embodiment of the present invention. The present invention may also be implemented as a device or apparatus program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention may be implemented in a manner similar to a computer program or a computer program product. It may be stored on a computer readable medium, or may have the form of one or more signals. Such a signal may be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of multiple such elements. The present invention can be implemented by means of hardware including several different elements and by means of appropriately programmed computers. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order, and these words may be interpreted as names.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

A wireless control method for a lithium-ion battery pack, characterized by comprising:

The master controller wakes up the slave controller through wireless broadcasting;

The slave controller receives a sampling instruction from the master controller;

The slave controller collects battery information and sends it to the master controller via wireless communication;

The main controller receives the battery information and completes the sampling of this cycle.
The wireless control method for a lithium-ion battery pack according to claim 1 is characterized in that each slave controller sends a wake-up completion flag after receiving a wake-up signal from the master controller.
The wireless control method for a lithium-ion battery pack according to claim 2 is characterized in that if the master controller does not receive the wake-up completion flag from the slave controller, the wake-up instruction is resent.
The wireless control method for a lithium-ion battery pack according to claim 1 is characterized in that it also includes: after completing the sampling of the current cycle, entering the next sampling cycle and cyclically sampling.
The wireless control method for a lithium-ion battery pack according to claim 1, wherein the battery information includes a battery cell voltage and a battery cell temperature.
The wireless control method for a lithium-ion battery pack according to claim 1, wherein the number of slave controllers is four.
A wireless control system for a lithium-ion battery pack, characterized by comprising:

The slave controller wake-up module is used by the master controller to wake up the slave controller through broadcasting;

The main controller sampling instruction receiving module is used to receive the sampling instruction from the main controller from the controller;

A battery information collection and transmission module is used to collect battery information from the controller and send it to the main controller via wireless communication;

The battery information receiving module is used by the main controller to receive battery information and complete the sampling of this cycle.
An electronic device, characterized in that it comprises: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus. The memory stores a computer program, which, when executed by the processor, causes the processor to perform the steps of the method according to any one of claims 1 to 6.
A computer-readable storage medium, characterized in that it stores a computer program executable by an electronic device, and when the computer program runs on the electronic device, the electronic device executes the steps of the method described in any one of claims 1 to 6.
A vehicle, characterized in that it specifically comprises:

An electronic device for realizing a wireless control method for a lithium-ion battery pack;

A processor, wherein the processor runs a program, and when the program runs, the processor executes the steps of the method for wirelessly controlling a lithium-ion battery pack according to any one of claims 1 to 6 for data output from the electronic device;

A storage medium for storing a program, wherein when the program is run, the program executes the steps of the method for realizing wireless control of a lithium-ion battery pack as claimed in any one of claims 1 to 6 for data output from an electronic device.