Household energy storage stacked battery communication addressing method

Abstract

The invention provides a communication addressing method for household energy storage stacked batteries, which comprises the following steps: step 1, a plurality of battery modules are stacked and installed, and each battery module is provided with a resistor; 2, after the system is stacked and installed and is powered on, the communication host detects the number of the battery modules; 3, the communication host broadcasts the number of the battery modules to each battery module through the bus; 4, each battery module calculates the address of the battery module according to the total number of the battery modules and the resistance voltage of the battery module; and 5, each battery module automatically distributes the communication address according to the resistance voltage of the battery module from large to small or from small to large, thereby reducing the dependence on professional constructors, solving the problem that a traditional energy storage system needs to manually set the communication address, enabling a user to increase the battery module according to the actual demand, and improving the user experience. Address setting does not need to be worried about, the operation difficulty and the installation cost are reduced, and the stability of the system is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage batteries, and more specifically, particularly relates to a communication addressing method for household energy storage stacked batteries. Background Art

[0002] The energy issue is an unavoidable challenge in the development of human society. With the rapid growth of population and industrialization, the supply of traditional fossil energy can no longer meet the ever-expanding energy demand. In contrast, clean and renewable new energy sources such as solar energy and wind energy are gaining more and more attention and favor. However, these new energy sources also have the defects of intermittency and instability, and it is difficult to meet the continuous electricity demand of end users such as households alone.

[0003] To solve this problem, a new home energy solution has emerged - the home energy storage system; it integrates multiple energy sources such as city power, emergency power supply, solar panels, wind turbines, diesel generators, etc., and directly connects important loads in the home on the AC and DC sides to build a complete home new energy solution; however, with the continuous growth of household electricity demand, the demand for energy storage is becoming increasingly urgent, and the requirements for energy storage capacity are constantly increasing. In order to meet the needs of easy installation, convenient maintenance and users' flexible increase in battery capacity, battery stacking has gradually become the mainstream.

[0004] In the actual application of home energy storage systems, there are many problems. Among them, the battery PACK, inverter, photovoltaic panels and other modules involve communication problems between the battery PACK and the inverter during the assembly process, which leads to slow progress in on-site construction and commissioning, and even makes the entire system unable to operate normally. In the current market, the setting of communication addresses mostly relies on manual operation, setting the address by dialing a code or setting it through an APP. This method not only requires extremely high professionalism from on-site construction personnel, but also increases the difficulty of maintenance. Once the battery module is replaced, the address needs to be reset, which consumes a lot of time and energy. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a communication addressing method for household energy storage stacked batteries to solve the problem in the prior art that the communication address of the traditional energy storage system relies on manual operation, and the address is set by dialing a code or through an APP. This method not only requires extremely high professionalism of on-site construction personnel, but also increases the difficulty of maintenance. Once the battery module is replaced, the address needs to be reset, which consumes a lot of time and energy.

[0006] The purpose and effect of the communication addressing method of household energy storage stacked batteries of the present invention are achieved by the following specific technical means:

[0007] A household energy storage stack battery communication addressing method comprises the following steps:

[0008] Step 1: Stack and install multiple battery modules, each battery module has a resistor;

[0009] Step 2: After the system stack is installed and powered on, the communication host detects the number of the battery modules;

[0010] Step 3: the communication host broadcasts the number of battery modules to each battery module via the bus;

[0011] Step 4: Each of the battery modules calculates its own address by the total number of battery modules and its own resistance voltage;

[0012] Step 5: Each battery module is automatically assigned a communication address according to its own resistance voltage, from large to small or from small to large.

[0013] In a preferred embodiment, in step 1, the resistance values ​​of the plurality of battery modules are equal, R0=R1=R2=Rn, wherein n is the total number of stacked battery modules.

[0014] In a preferred embodiment, in step 2, the communication host detects the number of battery modules including n=(Vaddr / Vaddr0)-1, wherein Vaddr0 is the voltage of a single resistor.

[0015] In a preferred embodiment, in step 4, each battery module calculates its own address including:

[0016] The resistance voltage Vaddr1 of the first battery module is (n-1) / n, the resistance voltage Vaddr2 of the second battery module is (n-2) / n, and so on until the resistance voltage Vaddrn of the nth battery module is (1) / n.

[0017] In a preferred embodiment, in step three, the bus is a CAN bus or an RS485 bus.

[0018] In a preferred embodiment, the communication host is an inverter or a battery module control unit.

[0019] In a preferred embodiment, the battery module is a communication slave.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. After multiple battery modules are stacked and installed, the communication host can automatically detect the number of battery modules and broadcast it to each battery module through the bus. The battery module automatically calculates and assigns its own communication address according to its own resistance and voltage, which solves the problem of traditional energy storage systems requiring manual setting of communication addresses and improves the intelligence level of the system. In addition, users can flexibly add battery modules according to actual needs without having to worry about complex address setting issues, which reduces the difficulty and error rate of manual operation and improves the stability of the system. Whether it is the increase in household electricity demand or the adjustment of energy storage strategies, it can be easily dealt with, providing users with a more convenient and reliable energy storage solution.

[0022] 2. This method improves the overall performance and cost-effectiveness of the system; on the one hand, the intelligent design of the system stack's automatic address allocation enables the system to manage battery modules more efficiently and accurately, avoiding the confusion and errors that may be caused by manual address setting, thereby improving the stability and reliability of the system; on the other hand, since there is no need for manual intervention in address setting, the installation method becomes simpler, reducing dependence on professional construction personnel, and thus reducing installation costs. This not only reduces the initial construction cost of the system, but also reduces maintenance costs and potential losses caused by failures during long-term use, bringing users a more economical and practical energy storage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a flow chart of the steps of a communication addressing method for household energy storage stacked batteries of the present invention.

[0024] Figure 2 It is a structural schematic diagram of an energy storage system in a communication addressing method for household energy storage stacked batteries of the present invention.

[0025] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0026] 1. Communication host; 2. First battery module; 3. Second battery module; 4. Nth battery module. DETAILED DESCRIPTION

[0027] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with the accompanying drawings and examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0028] Example:

[0029] Please refer to Figure 1 As shown, the present invention provides a communication addressing method for household energy storage stacked batteries, comprising the following steps:

[0030] Step 1: Stack and install multiple battery modules. Each battery module has a resistor. This stacking installation method can flexibly adjust the battery capacity according to actual needs to meet the needs of different users. When the user needs to increase the battery capacity, he only needs to simply stack the new battery module on the original one without complicated electrical modification.

[0031] In step one, the resistance values ​​of multiple battery modules are equal, that is, R0=R1=R2=...=Rn, where n is the total number of stacked battery modules; the physical property of equal resistance between battery modules is utilized to lay the foundation for subsequent address allocation. By making the resistance of each battery module the same, the system can more accurately identify the relative position of each module, thereby providing a reliable basis for automated address allocation. This unified resistance setting not only simplifies the initialization process, but also ensures the stability and reliability of the entire communication system; during installation, users only need to stack the battery modules as required, without the need for complex resistance debugging, and the entire process can be automatically managed by the system.

[0032] Step 2: After completing the stacking installation of multiple battery modules, the energy storage system is powered on. At this time, the communication host 1 will automatically detect the number of connected battery modules. This process is fully automated and does not require manual intervention. The communication host 1 uses the built-in detection algorithm to quickly scan the entire system bus and obtain the number of connected battery modules. This intelligent detection method greatly improves the installation efficiency of the system and reduces the tedious steps of manual configuration. The communication host 1 can identify all ready battery modules in the system, laying the foundation for subsequent communication address allocation.

[0033] In step 2, the communication host 1 detects the number of battery modules. The calculation formula for this number is n=(Vaddr / Vaddr0)-1, where Vaddr0 represents the voltage generated by a single resistor. By comparing the detected total voltage Vaddr with the voltage Vaddr0 generated by a single resistor, the system can automatically calculate the stacking number n of the battery modules. This module quantity identification method based on voltage detection makes full use of the physical property that the resistance between battery modules is equal. The communication host 1 can read and analyze the voltage information of each battery module, thereby calculating the total number of modules in the current system and improving deployment efficiency.

[0034] Step 3: After the communication host 1 detects the number of battery modules, the communication host 1 will broadcast to all connected battery modules through the system bus. This broadcast message contains the information of the number of detected battery modules. After receiving this broadcast message, each battery module will compare its own address number with the total number of modules to determine its position in the entire system. This active communication method ensures that each battery module can obtain the latest information of the system topology in a timely manner, thereby laying the foundation for subsequent coordinated control and ensuring that the entire system can quickly complete the initialization configuration and enter normal working state.

[0035] In step three, the energy storage system can use CAN bus or RS485 bus as the communication bus. CAN bus is widely used in the field of industrial control due to its excellent anti-interference ability, high-speed transmission, multi-point communication and other characteristics, while RS485 bus is widely favored due to its low cost, long communication distance, strong compatibility and other advantages. The two bus solutions have their own advantages and disadvantages. The communication host 1 can flexibly select the bus type that suits its own needs. No matter which bus is used, they can efficiently realize the data transmission and control signal interaction between the communication host 1 and each battery module. Through the standardized bus protocol, the communication host 1 can read and parse the parameters from each battery module to realize the intelligent management of the entire energy storage system. This communication method based on the universal bus not only ensures the versatility and scalability of the system, but also reduces the overall integration cost, bringing users a more economical and affordable experience.

[0036] Step 4: After the communication host 1 completes broadcasting the battery module quantity information, each battery module will autonomously calculate the address number in the entire system based on its own resistance and voltage characteristics and the total module quantity information just obtained; this address calculation process is completely automatic and does not require human intervention. Each battery module will use its own physical characteristics to deduce its unique identification in the system through a simple algorithm. This distributed address allocation mechanism not only improves the flexibility of the system, but also greatly reduces maintenance costs; users do not need to worry about complex address setting issues, they only need to focus on the stacking installation of the battery modules, and the entire system can complete the subsequent initialization configuration by itself;

[0037] This intelligent address allocation mechanism solves the tedious problem of traditional energy storage systems requiring manual address setting, and greatly improves the automation level of the energy storage system. Users no longer need to perform complex address configuration operations. They only need to flexibly increase the number of battery modules according to actual needs, and the system can automatically adapt and allocate reasonable communication addresses, reducing the difficulty and error risk of manual intervention and improving the overall system stability. Whether it is the growth of household electricity demand or the adjustment of energy storage strategies, this intelligent address allocation mechanism can respond flexibly, providing users with a more convenient and reliable energy storage solution. It not only shortens the system deployment and debugging cycle and reduces the overall development cost, but also ensures that the address allocation of each module on the communication bus is reasonable and orderly, avoiding signal interference and system failures caused by address conflicts.

[0038] In step 4, each battery module will calculate the corresponding address according to its relative position. Specifically, the resistance voltage of the first battery module 2 is Vaddr1=(n-1) / n, the resistance voltage of the second battery module 3 is Vaddr2=(n-2) / n, and so on until the resistance voltage of the nth battery module 4 is Vaddrn=(1) / n. This address allocation method based on voltage gradient utilizes the physical property that each battery module has equal resistance value. The communication host 1 can detect the different voltage values ​​generated by each module, thereby automatically assigning a unique address identifier to it; this automated address allocation mechanism can improve the intelligence and convenience of the energy storage system, and users do not need to manually perform tedious settings; at the same time, this method also ensures the accuracy and consistency of address allocation, which helps the smooth implementation of subsequent communication protocols.

[0039] In step five, each battery module automatically allocates a communication address according to its own voltage. Specifically, the module will detect its own resistance voltage value and automatically determine its own communication address in order from large to small or from small to large. This automatic address allocation method not only simplifies the system initialization process and reduces the user's configuration burden, but also ensures that each module has a unique and reasonable address identification on the communication bus, avoiding communication failures caused by address conflicts. Of course, if the actual application scenario of the system has other special requirements, the address allocation mechanism can also be adjusted according to the specific situation. For example, the communication address of each module can be manually set to meet specific data collection or control requirements, which can better adapt to the personalized needs of different users.

[0040] This intelligent address allocation mechanism not only improves the overall performance of the system, but also brings significant cost-effectiveness. On the one hand, the system can automatically, efficiently and accurately manage each battery module, avoiding the confusion and errors that may be caused by manual address setting, thereby improving the stability and reliability of the system; on the other hand, there is no need for manual intervention in address setting, making installation easier, reducing dependence on professional construction personnel, and thus reducing installation costs. This not only reduces the initial construction cost of the system, but also reduces maintenance costs and potential losses due to failures during long-term use, bringing users a more economical and practical energy storage experience.

[0041] The communication host 1 can be in the form of an inverter or a battery module control unit. As an inverter, the communication host 1 can be responsible for converting the DC power output by the energy storage battery system into AC power that can be used by the AC load. In this case, the communication host 1 must not only realize communication and control with each battery module, but also ensure the efficient and stable operation of the entire power conversion process; and as a battery module control unit, the communication host 1 focuses on the monitoring and management of each battery module to ensure the safe and reliable operation of the battery system; no matter which form the communication host 1 adopts, its core function is to realize intelligent management and control of the entire battery system through two-way communication with each battery module, so as to provide users with reliable energy storage services; and the flexible positioning of the communication host 1 reflects the versatility and adaptability of the method, which can meet the personalized needs in different application scenarios.

[0042] As a communication slave, the battery module can establish reliable two-way communication with the communication host 1. The MCU integrated in these battery modules can monitor the operating status of the battery in real time and feed back key parameters such as resistance, voltage and other data to the communication host 1. At the same time, the communication host 1 can also issue charging and discharging control instructions to these communication slaves to achieve unified management of the entire battery system; through standardized communication protocols, the communication host 1 can seamlessly connect with any battery module to ensure the efficiency and compatibility of data interaction; this master-slave communication architecture not only simplifies the system integration process and reduces the overall development cost, but also ensures the modular scalability of the battery module. Users can flexibly configure the battery capacity according to actual needs.

[0043] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A communication addressing method for household energy storage stacked batteries, characterized in that: The following steps are included: Step 1: Stack and install multiple battery modules, each battery module has a resistor; Step 2: After the system stack is installed and powered on, the communication host (1) detects the number of battery modules; Step 3: the communication host (1) broadcasts the number of battery modules to each of the battery modules via a bus; Step 4: Each of the battery modules calculates its own address by the total number of battery modules and its own resistance voltage; Step 5: Each battery module is automatically assigned a communication address according to its own resistance voltage, from large to small or from small to large.

2. A communication addressing method for household energy storage stacked batteries according to claim 1, characterized in that: In step 1, the resistance values ​​of the plurality of battery modules are equal, R0=R1=R2=Rn, where n is the total number of stacked battery modules.

3. A communication addressing method for household energy storage stacked batteries according to claim 2, characterized in that: In step 2, the communication host (1) detects the number of battery modules including n=(Vaddr / Vaddr0)-1, wherein Vaddr0 is the voltage of a single resistor.

4. A household energy storage stacked battery communication addressing method according to claim 3, characterized in that: In step 4, each battery module calculates its own address including: The resistance voltage Vaddr1 of the first battery module (2) is (n-1) / n, the resistance voltage Vaddr2 of the second battery module (3) is (n-2) / n, and the resistance voltage Vaddrn of the nth battery module (4) is (1) / n.

5. A communication addressing method for household energy storage stacked batteries according to claim 1, characterized in that: In step three, the bus is a CAN bus or an RS485 bus.

6. A communication addressing method for household energy storage stacked batteries according to claim 1, characterized in that: The communication host (1) is an inverter or a battery module control unit.

7. A communication addressing method for household energy storage stacked batteries according to claim 6, characterized in that: The battery module is a communication slave.

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