Energy storage battery cabinet

Abstract

The application provides an energy storage battery cabinet, which comprises a management unit and a plurality of battery packs, each of the plurality of battery packs is provided with an identity code on a surface thereof, and the plurality of battery packs comprises a first battery pack. The management unit is used for receiving first preset information set sent by a terminal device and identity information of the first battery pack sent by the first battery pack. The first preset information set comprises identity information of each of the plurality of battery packs, and the first preset information set is generated by scanning the identity codes of the plurality of battery packs by the terminal device. In the case that the identity information of the first battery pack is located in the first preset information set, a wireless data link is established with the first battery pack. The energy storage battery cabinet can save operation and maintenance cost.

Description

Technical Field

[0001] This application relates to the field of power technology, and in particular to an energy storage battery cabinet. Background Technology

[0002] An energy storage battery cabinet is a new type of portable energy storage device that combines energy storage technology with a physical cabinet. The structure of a traditional energy storage battery cabinet is as follows: Figure 1 As shown, the energy storage battery cabinet includes a management unit and multiple battery packs. The management unit networks with the multiple battery packs via a controller area network (CAN) cable, according to the arrangement of the battery packs in the energy storage battery cabinet, to obtain the operating parameters of the multiple battery packs. However, cables (such as CAN cables) are expensive and prone to aging and failure, resulting in high operation and maintenance costs for the aforementioned energy storage battery cabinet. Summary of the Invention

[0003] This application provides an energy storage battery cabinet that can save on operation and maintenance costs.

[0004] Firstly, this application provides an energy storage battery cabinet, which includes a management unit and multiple battery packs. Each battery pack has an identification code on its surface. The multiple battery packs include a first battery pack. The management unit receives a first preset information set sent by a terminal device and the identification information of the first battery pack sent by the first battery pack. The first preset information set includes the identification information of each battery pack in the multiple battery packs and is generated by the terminal device scanning the identification codes of the multiple battery packs. If the identification information of the first battery pack is within the first preset information set, a wireless data link is established with the first battery pack. It is understood that the management unit and the multiple battery packs form a network by establishing a wireless data link, eliminating the need for costly and easily aging cables, thereby saving on the operation and maintenance costs of the energy storage battery cabinet. Furthermore, battery packs whose identification information is not within the first preset information set (such as battery packs in other energy storage battery cabinets) or other wireless communication devices cannot access the wireless network established by the management unit and the multiple battery packs, thereby improving the anti-crosstalk capability of the energy storage battery cabinet.

[0005] In conjunction with the first aspect, in a first possible implementation, the management unit is further configured to receive a network access request broadcast by the first battery pack before receiving the identity information of the first battery pack sent by the first battery pack, and to send a network access response message to the first battery pack based on the network access request. The network access response message is used to instruct the first battery pack to send its identity information to the management unit.

[0006] In conjunction with the first aspect or the first possible implementation of the first aspect, in the second possible implementation, the management unit is further configured to, after establishing a wireless data link with the first battery pack, receive the operating parameters of the first battery pack sent by the first battery pack, and determine the rate of change of the operating parameters of the first battery pack within a first preset time period; if the difference between the rate of change of the operating parameters of the first battery pack and a reference rate of change is greater than a preset threshold, determine that the first battery pack is faulty. Therefore, the management unit can perform fault detection on multiple battery packs and output a battery fault message containing the location of the faulty battery pack, enabling staff to quickly replace the faulty battery pack based on its location, without requiring staff to check each battery pack in the battery cabinet on-site to determine the location of the faulty battery pack, thereby improving the operation and maintenance efficiency of the energy storage battery cabinet.

[0007] In conjunction with the second possible implementation of the first aspect, in the third possible implementation, multiple battery packs are arranged in an array in the energy storage battery cabinet. The first preset information set also includes the battery pack position of each battery pack among the multiple battery packs. The first preset information set is generated by the terminal device scanning the identification codes of multiple battery packs in the first image. The first image includes multiple battery packs arranged in an array. The management unit is further configured to determine the position of the first battery pack among the multiple battery packs based on the identification information of the first battery pack when a first battery pack failure is determined. When the position of the first battery pack among the multiple battery packs is determined, a battery pack failure message is sent to the main control device. The battery pack failure message is used to instruct the main control device to output a first battery pack failure and the position of the first battery pack among the multiple battery packs. Understandably, the management unit can not only detect faults in each battery pack and determine the location of the faulty battery pack, but also issue fault alarms and indicate the location of the faulty battery pack through the main control equipment. This allows staff to quickly replace the faulty battery pack based on its location, eliminating the need for staff to check each battery pack in the battery cabinet on-site to determine the location of the faulty battery pack, thereby improving the operation and maintenance efficiency of the energy storage battery cabinet.

[0008] In conjunction with the third possible implementation of the first aspect, in the fourth possible implementation, the energy storage battery cabinet further includes a first battery access terminal, which is used to connect to a first battery pack so that the first battery pack can be connected to the energy storage battery cabinet; the management unit is further used to send a first instruction to the terminal device when the working parameter value of the first battery access terminal drops to a first preset value range for a first time period and then rises to a second preset value range, the first instruction being used to control the terminal device to scan the identity code of the current battery pack located at the first battery pack location, and send the scanned identity information of the current battery pack to the management unit; the management unit is further used to receive the identity information of the current battery pack sent by the terminal device, and replace the identity information of the first battery pack in the first preset information set with the identity information of the current battery pack to obtain a second preset information set; the management unit is further used to receive the identity information of the current battery pack sent by the current battery pack, and establish a wireless data link with the current battery pack when the identity information of the current battery pack is located in the second preset information set. Understandably, the management unit can determine whether the first battery pack has been replaced based on the changing trend of the operating parameter values ​​of the first battery access terminal, and update the preset information set if it is determined that the first battery pack has been replaced, so that the current battery pack can accurately replace the first battery pack and establish a wireless data link with the management unit, thereby improving the anti-crosstalk capability of the energy storage battery cabinet.

[0009] In a fifth possible implementation, combining the third or fourth possible implementation of the first aspect, the management unit is further configured to, after establishing a wireless data link with the first battery pack, determine the location of the first battery pack among multiple battery packs based on the identity information of the first battery pack, and send a network completion message to the terminal device. The network completion message instructs the terminal device to output that the network formation between the first battery pack and the management unit is complete, as well as the location of the first battery pack among multiple battery packs. It is understood that the management unit can instruct the terminal device to output the network formation status between the management unit and each battery pack, as well as the location of the battery packs that have completed network formation with the management unit. This allows staff to quickly replace battery packs that have failed to form a network, eliminating the need for staff to manually check each battery pack in the battery cabinet to determine the location of the failed battery pack, thereby improving the operational efficiency of the energy storage battery cabinet.

[0010] In conjunction with any of the first to fifth possible implementations of the first aspect, in the sixth possible implementation, each battery pack further includes multiple communication units, and the identification information of each battery pack includes the same characters in the MAC addresses of the multiple communication units, or the same characters in the serial numbers of the multiple communication units. Therefore, the identification information of each battery pack is diverse, resulting in diverse networking methods between the management unit and each battery pack, offering high flexibility.

[0011] In a seventh possible implementation, combining any of the first to sixth possible embodiments of the first aspect, the identification code includes a QR code or a barcode. Thus, the identification code can take many forms, allowing for diverse and flexible networking methods between the management unit and each battery pack.

[0012] In an eighth possible implementation, combining any one of the second to fifth possible implementations of the first aspect, the reference change rate is the mode or mean of the change rates of the operating parameters of multiple battery packs within a first preset time period. Therefore, the reference change rate can be set in various ways, resulting in diverse and flexible methods for the management unit to determine battery pack faults.

[0013] In conjunction with the second possible implementation of the first aspect or the fifth possible implementation of the first aspect, in the ninth possible implementation, the operating parameters include at least one of the operating voltage, operating current and operating temperature. As can be seen, the operating parameters are diverse, which makes the management unit able to determine battery pack faults in a variety of ways and with high flexibility.

[0014] Secondly, this application provides a networking method for an energy storage battery cabinet. The energy storage battery cabinet includes multiple battery packs and a management unit. Each battery pack has an identification code on its surface, and the multiple battery packs include a first battery pack. The method includes: the management unit receiving a first preset information set sent by a terminal device and the identification information of the first battery pack sent by the first battery pack. The first preset information set includes the identification information of each battery pack in the multiple battery packs, and the first preset information set is generated by the terminal device scanning the identification codes of the multiple battery packs; and establishing a wireless data link with the first battery pack when the identification information of the first battery pack is within the first preset information set.

[0015] In conjunction with the second aspect, in the first possible implementation, before receiving the identity information of the first battery pack sent by the first battery pack, the management unit receives the network access request broadcast by the first battery pack, and sends a network access response message to the first battery pack based on the network access request. The network access response message is used to instruct the first battery pack to send its identity information to the management unit.

[0016] In conjunction with the second aspect or the first possible implementation of the second aspect, in the second possible implementation, after establishing a wireless data link with the first battery pack, the management unit receives the operating parameters of the first battery pack sent by the first battery pack and determines the rate of change of the operating parameters of the first battery pack within a first preset time period; if the difference between the rate of change of the operating parameters of the first battery pack and the reference rate of change is greater than a preset threshold, the first battery pack is determined to be faulty.

[0017] In conjunction with the second possible implementation of the second aspect, in the third possible implementation, multiple battery packs are arranged in an array in the energy storage battery cabinet. The first preset information set also includes the position of each battery pack among the multiple battery packs. The first preset information set is generated by the terminal device scanning the identification codes of multiple battery packs in the first image, and the first image includes multiple battery packs arranged in an array. When the management unit determines that the first battery pack is faulty, it determines the position of the first battery pack among the multiple battery packs based on the identification information of the first battery pack. When the position of the first battery pack among the multiple battery packs is determined, a battery pack fault message is sent to the main control device. The battery pack fault message is used to instruct the main control device to output the first battery pack fault and the position of the first battery pack among the multiple battery packs.

[0018] In conjunction with the third possible implementation of the second aspect, in the fourth possible implementation, the energy storage battery cabinet further includes a first battery access terminal, which is used to connect to the first battery pack so that the first battery pack can be connected to the energy storage battery cabinet; when the operating parameter value of the first battery access terminal drops to a first preset value range for a first time and then rises to a second preset value range, the management unit sends a first instruction to the terminal device, which is used to control the terminal device to scan the identification code of the current battery pack located at the first battery pack location and send the scanned and generated identification information of the current battery pack to the management unit; the management unit receives the identification information of the current battery pack sent by the terminal device and replaces the identification information of the first battery pack in the first preset information set with the identification information of the current battery pack to obtain a second preset information set; the management unit receives the identification information of the current battery pack sent by the current battery pack and establishes a wireless data link with the current battery pack when the identification information of the current battery pack is in the second preset information set.

[0019] In conjunction with the third or fourth possible implementation of the second aspect, in the fifth possible implementation, after establishing a wireless data link with the first battery pack, the management unit determines the location of the first battery pack among multiple battery packs based on the identity information of the first battery pack, and sends a network completion message to the terminal device. The network completion message is used to instruct the terminal device to output that the network formation between the first battery pack and the management unit is complete and the location of the first battery pack among multiple battery packs.

[0020] In conjunction with any of the second to fifth possible implementations of the second aspect, in the sixth possible implementation, each battery pack further includes multiple communication units, and the identification information of each battery pack includes the same characters in the MAC addresses of the multiple communication units, or the same characters in the serial numbers of the multiple communication units.

[0021] In conjunction with any of the second to sixth possible implementations of the second aspect, in the seventh possible implementation, the identification code includes a QR code or a barcode.

[0022] In combination with any of the second to fifth possible implementations of the second aspect, in the eighth possible implementation, the reference rate of change is the mode or mean of the rates of change of the operating parameters of the multiple battery packs within a first preset time period.

[0023] The networking method for energy storage battery cabinets provided in the second aspect and any possible embodiment of the second aspect of this application has the same beneficial effects as the technical solutions provided in the first aspect and any possible embodiment of the first aspect, and will not be repeated here. Attached Figure Description

[0024] Figure 1 This is a structural diagram of an energy storage battery cabinet provided by existing technology;

[0025] Figure 2 This is a schematic diagram illustrating the application scenario of the energy storage battery cabinet provided in this application;

[0026] Figure 3 This is a structural schematic diagram of an energy storage battery cabinet provided in this application;

[0027] Figure 4 This is a schematic diagram illustrating the workflow of a management unit establishing a wireless data link with a first battery pack, as provided in this application.

[0028] Figure 5 This is a schematic diagram of the structure of a first battery pack provided in this application;

[0029] Figure 6 This is a schematic diagram of a first image provided in this application;

[0030] Figure 7 This is a schematic diagram illustrating the workflow of a management unit establishing a wireless link with the current battery pack, as provided in this application.

[0031] Figure 8 This is a flowchart illustrating a networking method for an energy storage battery cabinet provided in this application. Detailed Implementation

[0032] The energy storage battery cabinet provided in this application can be applied to different application scenarios, such as energy storage power supply scenarios (including large-scale energy storage power station scenarios, small and medium-sized distributed energy storage power station scenarios, and residential photovoltaic-energy storage power generation system scenarios), and uninterrupted power supply (UPS) power supply scenarios. The following explanation uses the energy storage power supply scenario as an example.

[0033] See Figure 2 , Figure 2 This is a schematic diagram illustrating an application scenario of the energy storage battery cabinet provided in this application. In an energy storage power supply scenario, the energy storage battery cabinet provided in this application can... Figure 2 The energy storage battery cabinet 11 is shown. The output terminal of the energy storage battery cabinet 11 is connected to the input terminal of the energy storage converter 12, and the output terminal of the energy storage converter 12 is connected to the AC power grid 13 and the household appliance 14. The energy storage battery cabinet 11 includes a management unit and multiple battery packs, and each battery pack has an identification code on its surface. The management unit 111 and the terminal device 15 can establish a wired communication connection or a wireless communication connection. This application does not limit the connection method between the management unit 111 and the terminal device 15. For example, the terminal device 15 can have built-in control software, which can be a software module composed of program code, such as an application program (APP), used to present an operation interface to the user and establish a wireless communication connection with the management unit through an application programming interface (API). The terminal device 15 can be a handheld terminal, a desktop terminal, a wearable device, or other device with shooting and scanning functions. When the terminal device 15 is a handheld terminal, it can be a mobile phone, tablet computer, computer (such as a laptop computer, PDA, etc.), etc.

[0034] After the output of each battery pack in the multiple batteries is connected to the energy storage battery cabinet 11 via the battery access terminal on the cabinet body, that is, after the energy storage battery cabinet 11 is assembled, the terminal device 15 scans the identification codes of the multiple battery packs to generate a first preset information set, and sends the first preset information set to the management unit in the energy storage battery cabinet 11. The first preset information set includes the identification information of the multiple battery packs. Furthermore, each battery pack sends its identification information to the management unit. After receiving the first preset information set and the identification information of each battery pack, the management unit establishes a wireless data link with each battery pack if it determines that the identification information of each battery pack is within the first preset information set; that is, each battery pack joins the wireless network established by the management unit. With the wireless data link established with each battery pack, a stable wireless data transmission channel is formed between the management unit and each battery pack, enabling communication conditions for transmitting more or more complex wireless data.

[0035] After each battery pack joins the wireless network established by the management unit, the energy storage battery cabinet begins operation. Specifically, the output of the energy storage battery cabinet outputs DC power to the input of the energy storage converter. The energy storage converter inverts the input DC power into AC power and supplies AC power to the AC power grid and household appliances through its output, thereby powering the AC power grid or household appliances. Furthermore, when the energy storage battery cabinet starts operating, each battery pack sends its operating parameters to the management unit, which can monitor the health status of each battery pack based on these parameters.

[0036] Understandably, the management unit and multiple battery packs in the energy storage battery cabinet 11 are networked by establishing wireless data links, eliminating the need for costly and easily aging cables, thus saving on the operation and maintenance costs of the energy storage battery cabinet 11. Furthermore, battery packs whose identity information is not in the first preset information set (such as battery packs in other energy storage battery cabinets) or other wireless communication devices cannot access the wireless network formed by the management unit and multiple battery packs, thereby improving the crosstalk prevention capability of the energy storage battery cabinet 11.

[0037] The above are merely examples of application scenarios for the energy storage battery cabinet provided in this application, and are not exhaustive. This application does not limit the application scenarios.

[0038] Please see Figure 3 , Figure 3 This is a structural schematic diagram of an energy storage battery cabinet provided in this application. Figure 3 The energy storage battery cabinet 11 shown includes a management unit 111 and multiple battery packs, including a first battery pack 112. The multiple battery packs are arranged in an array in the energy storage battery cabinet 11, and each battery pack has an identification code on its surface. Figure 3 The number of battery packs shown is for illustrative purposes only. A wired or wireless communication connection can be established between the management unit 111 and the terminal device 15. The terminal device 15 can be a device independent of the energy storage battery cabinet 11, or it can be installed on the energy storage battery cabinet 11 and capable of scanning the identification code of each battery pack. This application does not limit the connection method or positional relationship between the terminal device 15 and the energy storage battery cabinet 11.

[0039] Specifically, terminal device 15 scans the identification codes of multiple battery packs to generate a first preset information set, and sends the first preset information set to management unit 111. The first preset information set includes the identification information of multiple battery packs. Furthermore, each battery pack sends its identification information to management unit 111. After receiving the first preset information set and the identification information of each battery pack, management unit 111, upon determining that the identification information of each battery pack is located within the first preset information set, establishes a wireless data link with each battery pack; that is, each battery pack joins the wireless network established by the management unit.

[0040] Since the principle of establishing a wireless data link between the management unit 111 and each battery pack is the same, for ease of description, the following will combine... Figure 4 The first battery pack 112 will be used as an example for explanation. Please refer to [link / reference]. Figure 4 , Figure 4 This is a schematic diagram illustrating the workflow of a management unit establishing a wireless data link with a first battery pack, as provided in this application.

[0041] Step S101: The first battery pack 112 broadcasts a network access request.

[0042] The first battery pack 112 broadcasts a network access request, i.e., initiates a network scan. After broadcasting the network access request, the first battery pack 112 waits for a network access response message. If the first battery pack 112 does not receive a network access response message within a second preset time period, it gradually reduces the broadcast frequency of the network access request to save energy. The second preset time period can be a fixed duration or an adjustable duration based on actual application scenarios and requirements. For example, the preset time period can be 10 minutes, 20 minutes, or 30 minutes.

[0043] Step S102: The management unit 111 sends a network access response message to the first battery pack 112.

[0044] After receiving the network access request broadcast by the first battery pack 112, the management unit 111 sends a network access response message to the first battery pack 112 based on the network access request.

[0045] Step S103: The first battery pack 112 sends its identity information to the management unit 111.

[0046] The first battery pack 112 includes multiple communication units. The following is in conjunction with... Figure 5 For an explanation of the specific structure and identification information of the first battery pack 112, please refer to [link / reference]. Figure 5 , Figure 5 This is a schematic diagram of the structure of a first battery pack provided in this application.

[0047] Figure 5The first battery pack 112 shown includes four communication units, which are wirelessly connected in sequence. The four communication units include a first communication unit 1121. Figure 5 The number of communication units shown is for illustrative purposes only.

[0048] In practical applications, each battery pack casing in the energy storage battery cabinet 11 typically has six surfaces, except for one surface which is made of plastic, while the other surfaces are made of metal. The metal surfaces are embedded in the cabinet body of the energy storage battery cabinet 11. Because the metal surfaces have strong signal shielding capabilities, a communication unit located near the plastic surface within the battery pack is used as the battery pack's communication interface to ensure stable reception and transmission of wireless data.

[0049] For example, Figure 5 The first communication unit 1121 shown is a communication unit located near the plastic surface of the first battery pack 112, serving as the communication interface of the first battery pack 112. After receiving the network access response message sent by the management unit 111 through the first communication unit 1121, the first battery pack 112 sends its identity information to the management unit 111 through the first communication unit 1121.

[0050] The communication unit can be a wireless chip, and the sensing unit can be a sensing chip. The identification information of the first battery pack 112 can be the same characters in the MAC addresses of multiple communication units, or the same characters in the serial numbers of multiple communication units. Assuming the first battery pack 112 includes 16 communication units, since a MAC address is typically composed of 12 hexadecimal characters, the first 11 characters of the MAC addresses of multiple communication units can be set to be the same, while the last character can be set to be different. For example, the first 11 characters of the MAC addresses of multiple communication units can be 0016EAAE3C4, and the last character can be 0, 1, 2, ... 15 respectively, then the identification information of the first battery pack 112 is 0016EAAE3C4. Therefore, different battery packs can be distinguished by setting different 11-character identifiers, making the identification information of each battery pack unique.

[0051] Optionally, the first battery pack 112 includes a communication unit. This communication unit serves as the communication interface for the first battery pack 112. After receiving a network access response message from the management unit 111 through this communication unit, the first battery pack 112 sends its identity information to the management unit 111 through the same communication unit. The identity information of the first battery pack 112 is either the MAC address or the serial number of the communication unit.

[0052] It is understood that in steps S101-S103, the first battery pack 112 acts as the initiator of the network scan, and the management unit acts as the responder. Optionally, the management unit 111 can act as the initiator of the network scan, and the first battery pack 112 can act as the responder. That is, the management unit 111 can broadcast a network access request, and the first battery pack 112 can send a network access response message and its identity information to the management unit 111 based on the network access request.

[0053] Step S104: Terminal device 15 sends a first preset information set to management unit 111.

[0054] Terminal device 15 scans the identification codes of multiple battery packs to generate a first preset information set. Specifically, upon receiving an information acquisition instruction, terminal device 15 can sequentially scan the identification codes of each battery pack in the energy storage battery cabinet 11 according to a preset scanning path (such as an S-shaped or U-shaped path) to generate the first preset information set, or it can capture a first image containing the identification codes of all battery packs in the energy storage battery cabinet 11 and then scan the identification codes of all battery packs in the first image to generate the first preset information set. The first image includes multiple battery packs arranged in an array, and the first preset information set includes the identification information of each battery pack and the position of each battery pack within the multiple battery packs. The information acquisition instruction can be generated by the user clicking the scan / capture button on the terminal device 15's operating interface, or it can be an instruction sent from the management unit 111 to the terminal device 15. The identification code of the battery pack can be a QR code or a barcode.

[0055] For ease of understanding, the following text will combine... Figure 6 For an explanation of the first preset information set, please refer to [link / reference]. Figure 6 , Figure 6 This is a schematic diagram of a first image provided in an embodiment of this application. Figure 6 The first image 151 shows eight battery packs arranged in a 4x2 grid. Since identification codes are set on the surface of the battery packs, the corresponding identification codes are also arranged in an array when the multiple battery packs are arranged in an array. Figure 6 The number and arrangement of battery packs shown are for illustrative purposes only.

[0056] During the process of scanning the first image 151, the terminal device 15 scans the identification code of each battery pack to generate the identification information of each battery pack. At the same time, it determines the identification code position of each battery pack among multiple identification codes and uses the identification code position of each battery pack as the battery pack position of each battery pack among multiple battery packs, thereby obtaining the identification information and battery pack position of each battery pack, i.e., the first preset information set.

[0057] For example, the identification code position can be represented by two characters, which can represent the row number and column number respectively. Assuming the first character represents the row number and the second character represents the column number, then an identification code position of 12 indicates that the corresponding identification code is located in the 1st row and 2nd column. For example... Figure 6 As shown, in the first image 151, the first battery pack 112 is located in the first row and first column among multiple battery packs. The terminal device 15 can scan the first identification code 113 corresponding to the first battery pack 112 to generate the identification information 0016EAAE3C4 of the first battery pack 112. At the same time, it determines that the identification code position of the first identification code 113 is 11, and uses 11 as the first battery pack position of the first battery pack 112 among multiple battery packs.

[0058] Subsequently, the terminal device 15 sends the first preset information set to the management unit 111 through its own communication interface.

[0059] This application does not limit the order of steps S104 and S101, that is, step S104 can be before or after step S101.

[0060] Step S105: When the identity information of the first battery pack 112 is located in the first preset information set, the management unit 111 establishes a wireless data link with the first battery pack 112.

[0061] The management unit 111 matches the received identity information of the first battery pack 112 with the identity information of each battery pack in the first preset information set. If the identity information of the first battery pack 112 is within the first preset information set, a wireless data link is established with the first battery pack 112. The wireless communication technology used by the management unit 111 to establish the wireless data link with the first battery pack 112 can be cellular communication technology (such as 4G mobile communication technology, 5G mobile communication technology, etc.) or wireless local area network communication technology (such as WiFi technology, Bluetooth technology, ZigBee technology, etc.).

[0062] Step S106: The first battery pack 112 sends its operating parameters to the management unit 111.

[0063] In addition to multiple communication units, the first battery pack 112 also includes multiple battery cells. The operating parameters of the first battery pack 112 include the operating parameters of the multiple battery cells.

[0064] The following is combined with Figure 5 The specific structure and operating parameters of the first battery pack 112 are explained. Figure 5The first battery pack 112 shown includes four communication units, four sensing units, and four battery cells. The four communication units are wirelessly connected sequentially, and each of the four communication units is connected to one of the four sensing units, which in turn is connected to one of the four battery cells. The four communication units include a first communication unit 1121, the four sensing units include a first sensing unit 1122, and the four battery cells include a first battery cell 1123. The first communication unit 1121 is connected to the first battery cell 1123 through the first sensing unit 1122. Figure 5 The number of communication units, sensing units, and battery cells shown is for illustrative purposes only.

[0065] The first communication unit 1121 can acquire the operating parameters of the first battery cell 1123 through the first sensing unit 1122, and can also acquire the operating parameters of other battery cells sent by other communication units in the first battery pack 112. Furthermore, the first communication unit 1121 serves as the communication interface for the first battery pack 112. After the first battery pack 112 establishes a wireless data link with the management unit 111, the operating parameters of the four battery cells are sent to the management unit 111 through the first communication unit 1121, facilitating the subsequent monitoring of the health status of the first battery pack 112 by the management unit 111 based on the operating parameters of the four battery cells. The operating parameters include at least one of operating voltage, operating current, and operating temperature.

[0066] Optionally, the first battery pack 112 includes a communication unit, multiple sensing units, and multiple battery cells. The communication unit can be connected to each of the multiple sensing units, with each sensing unit connected to the other in a one-to-one correspondence. The communication unit acquires the operating parameters of the multiple battery cells through the multiple sensing units. Furthermore, the communication unit serves as the communication interface for the first battery pack 112. After establishing a wireless data link with the management unit 111, the first battery pack 112 sends the operating parameters of the multiple battery cells to the management unit 111 through this communication unit.

[0067] Optionally, between steps S105 and S106, that is, after the management unit 111 establishes a wireless data link with the first battery pack 112 and before the first battery pack 112 sends its operating parameters to the management unit 111, the management unit 111 may send a second instruction to the first battery pack 112. After receiving the second instruction, the first battery pack 112 sends its operating parameters to the management unit 111.

[0068] Furthermore, in practical applications, after the management unit 111 establishes a wireless data link with the first battery pack 112, the management unit 111 will assume that the wireless data received through the wireless data link is the wireless data sent by the first battery pack. That is to say, when the management unit 111 obtains the operating parameters of the first battery pack 112 sent by the first battery pack 112, it will match the operating parameters of the first battery pack 112 with the identity information of the first battery pack 112.

[0069] Step S107: The management unit 111 determines the rate of change of the operating parameters of the first battery pack 112 within the first preset time period.

[0070] After receiving the operating parameters of the first battery pack 112, the management unit 111 uses the ratio of the change value of the operating parameters of the first battery pack 112 within a first preset time period to the first preset time period as the rate of change of the operating parameters of the first battery pack 112. The first preset time period can be a fixed duration or an duration that can be adjusted according to the actual application scenario and requirements. For example, the first preset time period can be 10 seconds, 30 seconds, or 1 minute.

[0071] Step S108: If the difference between the rate of change of the operating parameters of the first battery pack 112 and the reference rate of change is greater than a preset threshold, the management unit 111 determines that the first battery pack 112 is faulty and the first battery pack position of the first battery pack 112 among multiple battery packs.

[0072] Specifically, if the difference between the rate of change of the operating parameters of the first battery pack 112 and the reference rate of change exceeds a preset threshold, the management unit 111 determines that the first battery pack 112 is faulty. Then, the management unit 111 determines the location of the first battery pack 112 among multiple battery packs from a first preset information set based on the identity information of the first battery pack 112. The reference rate of change is the mode or mean of the rates of change of the operating parameters of multiple battery packs within a first preset time period. It can be understood that the reference rate of change reflects the rate of change of the operating parameters of the battery packs in the energy storage battery cabinet 11 that have not experienced a fault.

[0073] Step S109: Management unit 111 sends a battery pack fault message to the main control device.

[0074] Upon determining that the first battery pack 112 is faulty and its location among multiple battery packs, the management unit 111 sends a battery pack fault message to the main control device. Upon receiving the battery pack fault message, the main control device outputs that the first battery pack 112 is faulty and its location. Furthermore, if the management unit 111 determines that the difference between the rate of change of the operating parameters of the first battery pack 112 and a reference rate of change is less than or equal to a preset threshold, it determines that the first battery pack 112 is normal and its location, and sends a battery pack normal message to the main control device. Upon receiving the battery pack normal message, the main control device outputs that the first battery pack 112 is normal and its location.

[0075] For example, the main control device can output the health status (fault or normal) and the location of each battery pack in the form of a list on the operation interface. The number of rows and columns of this list is consistent with the number of rows and columns of the array of multiple battery packs presented in the energy storage battery cabinet 11, and the content displayed in each cell of the list reflects the health status of the battery pack whose location is the same as the cell's position in the list. For ease of understanding, please refer to Table 1, which is a fault information list provided in an embodiment of this application.

[0076] Table 1 Fault Information List

[0077] normal normal normal normal normal normal

[0078] Assuming the energy storage battery cabinet 11 includes eight battery packs arranged in a 4x2 grid, and the first battery pack 112 is located in the first row and first column, if the management unit 111 determines that the first battery pack 112 is faulty and all other battery packs except the first battery pack 112 are not faulty, the main control device can output a fault information list as shown in Table 1. In this fault information list, the cell in the first row and first column displays "Fault," while other cells display "Normal," indicating that the battery pack in the first row and first column is faulty. This allows staff to quickly replace the faulty battery pack based on Table 1, eliminating the need for staff to manually check each battery pack in the cabinet to determine its location, thereby improving the operation and maintenance efficiency of the energy storage battery cabinet.

[0079] The main control device can be a terminal device 15, or it can be a device that establishes a wireless communication connection with the management units in multiple energy storage battery cabinets through a cloud server. The main control device can have built-in control software, which can be a software module composed of program code, such as an APP, used to present an operating interface to the user and establish a wireless communication connection with the management unit 111 through an API. When the main control device communicates wirelessly with the management units in multiple energy storage battery cabinets through the cloud server, it can monitor the working status of the battery packs in multiple energy storage battery cabinets through the cloud server, thus making it suitable for scenarios where multiple energy storage battery cabinets are operating.

[0080] Furthermore, the energy storage battery cabinet 11 also includes a first battery access terminal, which is used to connect to the first battery pack 112, so that the first battery pack 112 can be connected to the energy storage battery cabinet 11. In the event of a failure of the first battery pack 112, the management unit 111 can determine whether the first battery pack 112 has been replaced based on the changing trend of the operating parameter values ​​of the first battery access terminal, and update the first preset information set if it is determined that the first battery pack 112 has been replaced, so that the current battery pack can accurately replace the first battery pack 112 and establish a wireless data link with the management unit 111. For better understanding, please refer to [link to relevant documentation]. Figure 7 , Figure 7 This is a schematic diagram illustrating the workflow of a management unit establishing a wireless link with the current battery pack, as provided in an embodiment of this application.

[0081] Step S201: When the management unit 111 determines that the working parameter value of the first battery access terminal drops to the first preset value range for a first time and then rises to the second preset value range, it sends a first instruction to the terminal device 15.

[0082] In practical applications, considering operational safety, maintenance personnel typically disconnect the connection lines between the energy storage battery cabinet 11 and other devices before replacing the battery packs in the energy storage battery cabinet, and then restore the connection lines. The operating parameter value of the first battery access terminal corresponding to the replaced first battery pack 112 will then exhibit a trend of first decreasing and then increasing. It is understood that if the management unit 111 determines that the operating parameter value of the first battery access terminal decreases to a first preset value range for a first time and then increases to a second preset value range, it can determine that the first battery pack 112 at the first battery pack location has been replaced. After determining that the first battery pack 112 at the first battery pack location has been replaced, the management unit 111 sends a first instruction to the terminal device 15. The operating parameter value can be one of the following: current value, voltage value, and temperature value. The first and second preset value ranges can be fixed ranges or ranges that can be adjusted according to actual application scenarios and requirements. For example, the first preset value range can be a range containing the value 0, and the second preset value range can be a range containing the operating parameter values ​​of the battery access terminals corresponding to non-faulty battery packs. The first duration can be a fixed duration or a duration that can be adjusted according to the actual application scenario and needs. For example, the first duration can be the time taken by maintenance personnel to replace the first battery pack 112.

[0083] Step S202: Terminal device 15 sends the current battery pack's identity information to management unit 111.

[0084] After receiving the first instruction sent by the management unit 111, the terminal device 15 scans the identification code of the current battery pack located at the first battery pack position to generate the current battery pack's identification information, and sends the current battery pack's identification information to the management unit 111. For an explanation of the battery pack's identification code and identification information, please refer to [link to relevant documentation]. Figure 4 The descriptions of the corresponding parts in steps S103 and S104 of the illustrated embodiment will not be repeated here.

[0085] Step S203: The management unit 111 replaces the identity information of the first battery pack 112 in the first preset information set with the identity information of the current battery pack to obtain the second preset information set.

[0086] After receiving the identity information of the current battery pack, the management unit 111 replaces the identity information of the first battery pack 112 in the first preset information set with the identity information of the current battery pack to obtain the second preset information set. For an explanation of the information in the first preset set, please refer to [link to relevant documentation]. Figure 4 The description of the corresponding part in step S104 of the illustrated embodiment will not be repeated here.

[0087] Step S204: The current battery pack sends its identity information to the management unit 111.

[0088] The current battery pack broadcasts a network access request, and after receiving the broadcast request, management unit 111 sends a network access response message to the current battery pack based on the request. Upon receiving the response message, the current battery pack sends its identity information to management unit 111. For an explanation of the broadcast network access request, please refer to [link to relevant documentation]. Figure 4 The description of the corresponding part in step S101 of the illustrated embodiment will not be repeated here.

[0089] This application does not limit the order of steps S204 and S201, that is, step S204 can be before step S201 or after step S201.

[0090] Step S205: When the identity information of the current battery pack is located in the second preset information set, the management unit 111 establishes a wireless data link with the current battery pack.

[0091] After receiving the identity information of the current battery pack sent by the current battery pack, the management unit 111 matches the identity information of the current battery pack with the identity information of each battery pack in the second preset information set, and establishes a wireless data link with the current battery pack if the identity information of the current battery pack is in the second preset information set.

[0092] Understandably, the identity information of the first battery pack 112 is no longer in the second preset set, and the wireless data link established between the management unit 111 and the first battery pack 112 will be disconnected. That is to say, after the first battery pack 112 is replaced by the current battery pack, it is no longer in the wireless network created by the first management unit 111.

[0093] After establishing a wireless data link with the current battery pack, management unit 111 can obtain the operating parameters of the current battery pack, perform fault detection on the current battery pack, and determine the battery pack position (i.e., the first battery pack position) among multiple battery packs. For details, please refer to [link to relevant documentation]. Figure 4 The descriptions of the corresponding parts in steps S106 to S109 of the illustrated embodiment will not be repeated here.

[0094] Furthermore, when the management unit 111 establishes a wireless data link with the current battery pack, it can send a network completion message to the terminal device 15. Upon receiving the network completion message, the terminal device 15 outputs that the network between the current battery pack and the management unit 111 is complete, as well as the location of the first battery pack. Conversely, if the current battery pack cannot send its identity information to the management unit 111, the management unit 111 will be unable to establish a wireless data link with it. If the management unit 111 is unable to establish a wireless data link with the current battery pack, it can send a network failure message to the terminal device 15. Upon receiving the network failure message, the terminal device 15 outputs that the network between the current battery pack and the management unit 111 has failed, as well as the location of the first battery pack.

[0095] For example, the terminal device 15 can output the networking status (networking complete or networking failed) of the management unit 111 and each battery pack, as well as the location of each battery pack, in the form of a list on the operation interface. For ease of understanding, please refer to Table 2, which is a networking information list provided in an embodiment of this application.

[0096] Table 2 Network Information List

[0097] 11 Network failure 12 Network completed 21 Network completed 22 Network completed 31 Network completed 32 Network completed 41 Network completed 42 Network completed

[0098] Assume that the energy storage battery cabinet 11 includes 8 battery packs arranged in a 4x2 grid, and the first battery pack 112, which was originally located in the 1x1 grid, has been replaced by the current battery pack. Based on the description of the battery pack positions in step S104, the battery pack position can be represented by two characters, that is, "11" can be used to represent the current battery pack located in the 1x1 grid among the 8 battery packs. Once the management unit 111 determines that all battery packs except the current battery pack have established wireless data links with the management unit 111, the terminal device 15 can output the networking information list shown in Table 2. In the "Battery Pack Location" column of this networking information list, except for the cell corresponding to the cell displaying "11" which displays "Network Failure" in the "Network Status" column, the other cells in the "Network Status" column all display "Network Complete". This allows staff to quickly replace the battery pack that failed to network based on its location, without having to check each battery pack in the battery cabinet on-site to determine its location, thereby improving the operation and maintenance efficiency of the energy storage battery cabinet.

[0099] Subsequently, the management unit 111 determines whether the current battery pack has been replaced by a new battery pack based on the changing trend of the operating parameter values ​​of the first battery access terminal. If it determines that the current battery pack has been replaced, it updates the first preset information set to facilitate the accurate replacement of the current battery pack with the new battery pack and the establishment of a wireless data link with the management unit 111. For detailed operating principles, please refer to [link to relevant documentation]. Figure 7 The descriptions of the corresponding parts in steps S201-S205 of the illustrated embodiment will not be repeated here.

[0100] In this embodiment, the management unit 111 in the energy storage battery cabinet 11 networks with multiple battery packs via a wireless data link, eliminating the need for costly and easily aging cables, thus saving on the maintenance costs of the energy storage battery cabinet 11. Battery packs whose identity information is not in the first preset information set (such as battery packs in other energy storage battery cabinets) or other wireless communication devices cannot access the wireless network formed by the management unit 111 and multiple battery packs, thereby improving the anti-crosstalk capability of the energy storage battery cabinet 11. Furthermore, the management unit 111 in the energy storage battery cabinet 11 can not only detect faults in each battery pack and determine the location of the faulty battery pack, but also issue fault alarms and indicate the location of the faulty battery pack through the main control device. This allows staff to quickly replace the network-failed battery pack based on its location, eliminating the need for staff to check each battery pack in the battery cabinet on-site to determine its location, thereby improving the maintenance efficiency of the energy storage battery cabinet. In addition, after the faulty battery pack is replaced, the management unit 111 can update the preset information set when it is determined that the faulty battery pack has been replaced, so that the current battery pack can accurately replace the faulty battery pack and establish a wireless data link with the management unit 111, thereby further improving the anti-crosstalk capability of the energy storage battery cabinet 11.

[0101] See Figure 8 , Figure 8 This is a flowchart illustrating a networking method for an energy storage battery cabinet provided in this application. The networking method for the energy storage battery cabinet provided in this application is applicable to... Figure 3 The energy storage battery cabinet 11 shown includes a management unit and multiple battery packs. Each battery pack has an identification code on its surface, and the multiple battery packs include a first battery pack. The networking method for the energy storage battery cabinet may include the following steps:

[0102] S301, the management unit receives the first preset information set sent by the terminal device and the identity information of the first battery pack sent by the first battery pack.

[0103] S302, when the identity information of the first battery pack is in the first preset information set, the management unit establishes a wireless data link with the first battery pack.

[0104] The management unit can be Figure 3 The management unit 111 shown may include a first battery pack. Figure 3 The first battery pack 112 shown can be used as a terminal device. Figure 3 The terminal device 15 is shown. For a detailed description of steps S301 and S302, please refer to [link / reference needed]. Figure 4 Description of the corresponding parts in steps S101 to S105 of the illustrated embodiment.

[0105] After establishing a wireless data link with the first battery pack, the management unit can also obtain the operating parameters of the first battery pack to perform fault detection. For details, please refer to [link to relevant documentation]. Figure 4 The descriptions of the corresponding parts in steps S106-S109 of the illustrated embodiment will not be repeated here.

[0106] Furthermore, if the management unit determines that the first battery pack has been replaced, it can update the first preset information set to facilitate the current battery pack accurately replacing the first battery pack and establishing a wireless data link with the management unit. For details, please refer to [link / document name - likely a reference to a specific procedure]. Figure 7 The descriptions of the corresponding parts in steps S201-S205 of the illustrated embodiment will not be repeated here.

[0107] In this embodiment, the management unit in the energy storage battery cabinet networks with multiple battery packs via a wireless data link, eliminating the need for costly and easily aging cables, thus saving on the maintenance costs of the energy storage battery cabinet. Battery packs whose identity information is not in the first preset information set (such as battery packs in other energy storage battery cabinets) or other wireless communication devices cannot access the wireless network formed by the management unit and multiple battery packs, thereby improving the crosstalk prevention capability of the energy storage battery cabinet. Furthermore, the management unit in the energy storage battery cabinet can not only perform fault detection on each battery pack and determine the location of the faulty battery pack, but also issue fault alarms and indicate the location of the faulty battery pack through the main control device. This allows staff to quickly replace the network-failed battery pack based on its location, eliminating the need for staff to check each battery pack in the battery cabinet on-site to determine its location, thereby improving the maintenance efficiency of the energy storage battery cabinet. In addition, after the faulty battery pack is replaced, the management unit can update the preset information set when it is confirmed that the faulty battery pack has been replaced, so that the current battery pack can accurately replace the faulty battery pack and establish a wireless data link with the management unit, thereby further improving the anti-crosstalk capability of the energy storage battery cabinet.

[0108] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An energy storage battery cabinet, characterized in that, The energy storage battery cabinet includes a management unit and multiple battery packs. Each battery pack has an identification code on its surface. The multiple battery packs include a first battery pack, wherein: The management unit is used to receive a first preset information set sent by the terminal device and the identity information of the first battery pack sent by the first battery pack. The first preset information set includes the identity information of each battery pack in the plurality of battery packs. The first preset information set is generated by the terminal device scanning the identity identification codes of the plurality of battery packs. When the identity information of the first battery pack is in the first preset information set, a wireless data link is established with the first battery pack. The energy storage battery cabinet also includes a first battery access terminal, which is used to connect to the first battery pack so that the first battery pack can be connected to the energy storage battery cabinet. The management unit is also configured to send a first instruction to the terminal device when the working parameter value of the first battery access terminal drops to the first preset value range for a first time period and then rises to the second preset value range. The first instruction is configured to control the terminal device to scan the identity code of the current battery pack located at the first battery pack position and send the identity information of the current battery pack generated by the scan to the management unit. The management unit is also configured to receive the identity information of the current battery pack sent by the terminal device, and replace the identity information of the first battery pack in the first preset information set with the identity information of the current battery pack to obtain a second preset information set; The management unit is also configured to receive the identity information of the current battery pack sent by the current battery pack, and establish a wireless data link with the current battery pack when the identity information of the current battery pack is located in the second preset information set.

2. The energy storage battery cabinet according to claim 1, characterized in that, The management unit is further configured to receive a network access request broadcast by the first battery pack before receiving the identity information of the first battery pack sent by the first battery pack, and to send a network access response message to the first battery pack based on the network access request. The network access response message is used to instruct the first battery pack to send its identity information to the management unit.

3. The energy storage battery cabinet according to claim 1, characterized in that... The management unit is further configured to, after establishing a wireless data link with the first battery pack, receive the operating parameters of the first battery pack sent by the first battery pack, and determine the rate of change of the operating parameters of the first battery pack within a first preset time period; if the difference between the rate of change of the operating parameters of the first battery pack and the reference rate of change is greater than a preset threshold, determine that the first battery pack is faulty.

4. The energy storage battery cabinet according to claim 3, characterized in that, The multiple battery packs are arranged in an array within the energy storage battery cabinet. The first preset information set also includes the position of each battery pack within the multiple battery packs. The first preset information set is generated by the terminal device scanning the identification codes of the multiple battery packs in a first image. The first image includes the multiple battery packs arranged in an array, wherein: The management unit is further configured to, in the event that the first battery pack is determined to be faulty, determine the location of the first battery pack among the plurality of battery packs based on the identity information of the first battery pack; and, in the event that the location of the first battery pack among the plurality of battery packs is determined, send a battery pack fault message to the main control device, wherein the battery pack fault message is used to instruct the main control device to output the first battery pack fault and the location of the first battery pack among the plurality of battery packs.

5. The energy storage battery cabinet according to claim 4, characterized in that, The management unit is further configured to, after establishing a wireless data link with the first battery pack, determine the location of the first battery pack among the plurality of battery packs based on the identity information of the first battery pack, and send a network completion message to the terminal device, wherein the network completion message is used to instruct the terminal device to output that the network formation of the first battery pack with the management unit is complete and the location of the first battery pack among the plurality of battery packs.

6. The energy storage battery cabinet according to any one of claims 1-5, characterized in that, Each battery pack also includes multiple communication units, and the identity information of each battery pack includes the same characters in the MAC addresses of the multiple communication units, or the same characters in the serial numbers of the multiple communication units.

7. The energy storage battery cabinet according to any one of claims 1-5, characterized in that, The identification code includes a QR code or a barcode.

8. The energy storage battery cabinet according to any one of claims 3-5, characterized in that, The reference rate of change is the mode or mean of the rates of change of the operating parameters of the multiple battery packs within the first preset time period.

9. The energy storage battery cabinet according to any one of claims 3-5, characterized in that, The operating parameters include at least one of the operating voltage, operating current, and operating temperature.

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