Novel energy storage system

Abstract

The utility model discloses a novel energy storage system, which belongs to the technical field of energy storage and comprises an inverter and a battery system, the inverter is in communication connection with the battery system, the battery system comprises a BMS system, and the BMS system comprises a blank module matched with and storing an inverter communication protocol. The novel energy storage system provided by the utility model can be matched with inverters of different brands, so that the selection right of a user is larger; the method has higher adaptability and compatibility, is compatible with debugging of various inverters, facilitates later product updating and iteration, and reduces the risk that problems flow into a client.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage technology field especially relates to a novel energy storage system. BACKGROUND

[0002] Energy storage system is an important product of energy market, such as the market share of household energy storage product, industrial and commercial energy storage, large power plant is more and more big, on one hand, can obtain the income from the electricity price of peak electricity and valley electricity, can also avoid the electricity of public power grid in special unstable situation. Compared with other new energy, such as wind power, thermal power, water power needs specific area and larger conversion equipment, and also needs to consider the instability of power generation, solar energy storage system is arranged on the roof or outside of conventional residential area, and photovoltaic board can meet daily demand in conventional sunshine time.

[0003] In the prior art, energy storage system and inverter are usually one-to-one matching, which limits the user's selection of inverter, and if the energy storage system is upgraded, the original matching inverter may also become incompatible, and there is a risk of replacement. In the product development process, due to the point-to-point matching of energy storage system and inverter, the problem points are easy to be ignored in the development process such as testing and verification, which is not conducive to product function development and verification. UTILITY MODEL CONTENT

[0004] In order to solve the problem of single matching selection, poor adaptability and compatibility of the energy storage system in the prior art, the utility model provides a novel energy storage system.

[0005] The specific technical scheme is as follows:

[0006] A novel energy storage system, comprising: an inverter and a battery system, the inverter is in communication connection with the battery system, the battery system comprises a BMS system, the BMS system comprises a blank module matching and storing the communication protocol of the inverter.

[0007] Further, the BMS system further comprises a general module and a matching module, the general module and the matching module are interactively connected, and the matching module is in communication connection with the blank module.

[0008] Further, the blank module is provided with a plurality of character spaces matching the communication protocol of the inverter.

[0009] Further, the blank module comprises an information filling module for importing function module information.

[0010] Further, the general module comprises a database, and the information stored in the database comprises SOC, SOH, voltage, current, temperature and common faults.

[0011] Further, the matching module comprises an inquiry module, a search module, a verification module and a matching confirmation module.

[0012] Further, the battery system further comprises a plurality of battery units, and the BMS system and the plurality of battery units are arranged on the structural support.

[0013] Further, the BMS system further comprises a cache clearing module, and the cache clearing module is in communication connection with the blank module.

[0014] Further, the space format of the character space is selected from one or more of CAN, RS485 and RS232.

[0015] The above technical scheme has the following advantages or technical effects:

[0016] 1. The novel energy storage system in the utility model comprises an inverter and a battery system, wherein the inverter can be adapted to different brands, and the system has wider selectivity.

[0017] 2. The BMS system in the battery system comprises a general module, a matching module and a blank module, the matching module contains the name code of a plurality of inverters, and the blank module supports writing of communication information of the corresponding inverter.

[0018] 3. The same battery system can be adapted to a plurality of inverters in advance, a plurality of verification products can share performance, risks and development loopholes can be found in advance, and the risk of problems flowing to the market end can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the utility model;

[0020] Figure 2 is a structural schematic diagram of the BMS system of the utility model;

[0021] Figure 3 is a matching connection flow chart of the battery system and the inverter of the utility model;

[0022] Figure 4 is a matching connection flow chart of the utility model information battery system replacing the inverter. DETAILED DESCRIPTION

[0023] In order to make the technical scheme of the application clearer, the application will be further described in detail in combination with the drawings and specific embodiments.

[0024] As Figure 1As shown, a new energy storage system comprises an inverter and a battery system, the inverter is in communication connection with the battery system, the battery system comprises a BMS system and a plurality of battery units, the BMS system and the plurality of battery units are arranged on a structural support, the BMS system comprises a blank module matching and storing the communication protocol of the inverter.

[0025] The inverter in the utility model can be adapted to different brands, and the battery system has a wider optional range, wherein the blank module is mainly used for matching different inverters, increasing the corresponding inverter communication information, when the user replaces the inverter, the blank module can obtain the new inverter information, so that the energy storage system can match multiple different brand inverters, and the user has more choices.

[0026] As shown in the figure, Figure 2 The BMS system comprises a common module, a matching module and a blank module, the common module and the matching module are in interactive connection, and the matching module and the blank module are in communication connection. The common module comprises a database, and the information stored in the database comprises SOC, SOH, voltage, current, temperature and common faults; the matching module comprises four sub-modules, namely an inquiry module, a search module, a verification module and a matching confirmation module, and the matching module is connected with an adaptation library; the blank module is provided with a plurality of character spaces matching the communication protocol of the inverter, and the blank module comprises an information filling module importing function module information.

[0027] When the energy storage system needs to be upgraded in capacity, the plurality of character spaces in the blank module can provide information storage space for the original communication information, so that after the capacity of the energy storage system is upgraded, the original inverter matching will not be affected, at the same time, the setting of the character space provides redundant space for the subsequent upgrading of the energy storage system, improves the system adaptability, and for the new inverter, the communication protocol of the new inverter matching can also be imported through the character space, more styles of inverters are debugged, and the system compatibility is improved.

[0028] The specific matching strategy of the energy storage system is as follows, taking the commonly used CAN communication as an example, assuming that there are five inverters, and the communication protocol codes of the five inverters are A, B, C, D and E respectively, and a household energy storage system is matched with the inverter A. In the process of adapting the household energy storage system to the inverter, as shown in the figure, Figure 3 .

[0029] The battery system is matched with the to-be-adapted inverter, the general block enters the relevant information of the to-be-adapted inverter into the database of the general block, the inquiry module sends an instruction, such as inquiring the name, and the interactive acquisition of the name is '' I am inverter A '' from the general block, the searching module searches the adaptation library to find whether the inverter with the name / code exists, if the inverter with the name / code exists in the adaptation library, the verification module sends a verification instruction, and the name '' are you inverter A? '' is confirmed again; if the inverter with the name / code is not found in the adaptation library, the inquiry module repeatedly sends the instruction, so that the matching cannot be matched due to the connection or searching process, when the name / code is not found after inquiring twice, the inquiry module stops sending the instruction, and it is indicated that the battery system cannot be matched with the inverter with the name / code. For the verification instruction sent by the verification module, the valid name '' I am inverter A '' is interactively fed back in the general block, the matching confirmation module judges whether the name in the verification instruction sent by the verification module is consistent with the valid name interactively fed back in the general block, if yes, the function module information is introduced into the blank module to fill in the inverter related information by the information filling module; if no, the inquiry module is returned to send the related instruction.

[0030] The basic structure and composition of the energy storage system are not specifically limited, and the matching module in the BMS battery management system in the battery system is inquired '' inverter name ''.

[0031] The matching in the general block is the first step of matching of any photovoltaic energy storage system, the inverter will have its own communication code (inverter name), when the battery system sends the signal of inquiring the name, the inverter replies, the battery system finds the corresponding matching information in the database, if yes, the name is confirmed again, the valid and correct feedback is obtained, the blank module interface is provided, the communication code of the inverter is written, and the adaptation is completed. If any step of the name searching or verification link is '' no '', and the secondary verification still fails, the matching connection cannot be achieved.

[0032] The space of the blank module in the utility model needs to ensure that at least the character space of the communication protocol of one inverter is matched, and 30% to 80% of the space is increased for upgrading.

[0033] The space format of the blank module needs to meet the format import of at least one mode of CAN / RS485 / RS232.

[0034] In order to ensure the uniqueness of the battery system and the inverter matching at the same time, the blank module needs to be emptied before being imported. The BMS system also includes a cache clearing module, which is in communication connection with the blank module, and is used to empty the historical data in the target blank module before the battery system and the inverter are matched. The blank module in the BMS system is schematically written into the communication protocol content of the corresponding inverter. If the erasing function is added to the blank module later, and the communication protocol content of other inverters is written, it is also within the extension protection range of the present application.

[0035] The above strategy needs to ensure that the basic communication protocol is the same, and needs to be a single communication protocol. The communication interface of the inverter and the energy storage system product needs to be ensured to be effectively connected. The BMS in the battery system needs to have enough space for the information import of the inverter function module. For the content of the inverter name, if the corresponding explanation of the software version is also extended later, it is also within the extension protection range of the present application.

[0036] If the inverter information is changed, the energy storage system sends an instruction to the inverter, obtains information from the changed inverter, and changes the inverter information in the database (adaptation library) according to the new inverter information, as shown in the flowchart. Figure 4

[0037] The battery matches the inverter information regularly. Taking the matching of inverter A as an example in the current state, if the matching protocol and version information are not changed, the battery works normally; when it is judged that the matching information is changed, that is, the matching protocol and / or version information are changed, such as being replaced by inverter B, the inverter name and version of the unfamiliar inverter are inquired, and feedback is waited. When the matching information is found in the adaptation library, the matching information of the original inverter A is removed, the new information is imported into the function module, and the battery and the inverter B are matched and then work normally again; when the inverter with the corresponding name / code is not found in the adaptation library, the inquiry module stops sending instructions, indicating that the battery system cannot match the inverter with the name / code, and the replacement of the inverter fails.

[0038] The household energy storage system provided by the utility model mainly introduces a novel energy storage system, which is provided with a BMS system containing a blank module in a battery system, so that users have more selection rights in the selection of energy storage products during the development of energy storage products. Even if the products are updated and iterated later, they are also applicable, and the user friendliness is stronger. In addition, multiple inverters are compatible for debugging, problems can be found more easily, and the risk of problem flow into the user end is reduced as much as possible.

[0039] ​The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A novel energy storage system characterized in that, The application relates to an inverter and a battery system, wherein the inverter is in communication connection with the battery system, the battery system comprises a BMS system, and the BMS system comprises a blank module matched with and storing an inverter communication protocol. The BMS system further comprises a common module and a matching module, the common module is in interactive connection with the matching module, and the matching module is in communication connection with the blank module.

2. A novel energy storage system as claimed in claim 1, wherein, A plurality of character spaces matched with the inverter communication protocol are arranged in the blank module.

3. A novel energy storage system as claimed in claim 1, wherein, The blank module comprises an information filling module for importing function module information.

4. A novel energy storage system as claimed in claim 1, wherein, The common module comprises a database, and information stored in the database comprises SOC, SOH, voltage, current, temperature and common faults.

5. A novel energy storage system as claimed in claim 2, wherein, The matching module comprises an inquiry module, a search module, a verification module and a matching confirmation module.

6. A novel energy storage system as claimed in claim 2, wherein, The battery system further comprises a plurality of battery units, and the BMS system and the plurality of battery units are arranged on a structural support.

7. A novel energy storage system as claimed in claim 1, wherein, The BMS system further comprises a cache clearing module, and the cache clearing module is in communication connection with the blank module.

8. A novel energy storage system as claimed in claim 1, wherein, The space format of the character space is selected from one or more of CAN, RS485 and RS232.

9. A novel energy storage system as claimed in claim 3, wherein, ​

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