Battery management system, battery management platform and battery device

Abstract

The utility model provides a battery management system, a battery management platform and a battery device. The system comprises a battery management server and a plurality of battery control units. The multiple battery control units are used for being connected with the multiple battery clusters in a one-to-one correspondence mode. The battery management server comprises a battery management module and an energy management module, the battery management module is connected with the energy management module, and the battery management module and the energy management module are wirelessly connected with the battery control units respectively. The battery control unit is used for acquiring state parameters of the battery cluster connected with the battery control unit and sending the acquired state parameters of the battery cluster to the battery management module; the battery management module is used for determining a battery state according to the state parameter of the battery cluster sent by each battery control unit, and sending the battery state to the energy management module; and the energy management module is used for generating a management instruction according to the battery state and sending the management instruction to each battery control unit.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery management system, a battery management platform, and a battery device. Background Art

[0002] With the development of energy storage, energy storage systems are now being applied in various industrial and commercial fields. In existing energy storage systems, the battery module is a relatively important component, so the safety and stability of the battery module are of paramount importance. To this end, energy storage systems often include a battery management system (BMS) to ensure the safety and health of the battery modules. Therefore, improving the reliability of the battery management system is crucial to energy storage systems. Utility Model Content

[0003] Based on this, the present application provides a battery management system, a battery management platform and a battery device, aiming to improve the reliability of battery management.

[0004] To achieve the above objectives, the technical solution provided by this application is implemented as follows:

[0005] In a first aspect, the present application provides a battery management system, comprising:

[0006] a plurality of battery control units, each of which is connected to each of the plurality of battery clusters in a one-to-one correspondence; and

[0007] a battery management server, the battery management server comprising a battery management module and an energy management module, the battery management module being connected to the energy management module; the battery management module being wirelessly connected to each of the battery control units, and the energy management module being wirelessly connected to each of the battery control units;

[0008] Among them, the battery control unit is used to obtain the status parameters of the battery cluster connected to it and send the obtained status parameters of the battery cluster to the battery management module; the battery management module is used to determine the battery status based on the status parameters of the battery cluster sent by each battery control unit, and send the battery status to the energy management module; the energy management module is used to generate management instructions based on the battery status and send the management instructions to each battery control unit.

[0009] Optionally, the battery management system further includes multiple wireless communication units; the multiple wireless communication units are connected to the multiple battery control units one by one; the wireless communication units are connected to the battery management module and the energy management module respectively.

[0010] Optionally, the wireless communication unit is provided with a gain antenna;

[0011] The wireless communication unit transmits the state parameters of the battery cluster sent by the battery control unit connected thereto through the booster antenna, and receives the management instructions sent by the energy management module.

[0012] Optionally, the wireless communication unit is further provided with a signal amplifying circuit; the signal amplifying circuit is connected to the boost antenna.

[0013] Optionally, the wireless communication unit and the battery control unit connected thereto are connected using the TCP / IP protocol.

[0014] Optionally, the battery management server is further configured with a user access port; the user access port is used to send battery status information to a user terminal connected thereto.

[0015] Optionally, the battery management system further includes a plurality of battery monitoring unit groups; the plurality of battery monitoring unit groups are connected to the plurality of battery control units in a one-to-one correspondence.

[0016] Optionally, the battery monitoring unit group includes multiple battery monitoring units; any of the battery monitoring units is connected to the battery control unit using the CAN protocol.

[0017] In a second aspect, the present application provides a battery management platform, comprising a battery module and a battery management system as described in any one of the first aspects.

[0018] In a third aspect, the present application provides a battery device, comprising:

[0019] multiple battery clusters;

[0020] a plurality of battery control units, each of which is connected to the plurality of battery clusters in a one-to-one correspondence and configured to obtain status parameters of the battery clusters connected thereto;

[0021] A plurality of wireless communication units, each of which is connected to each of the battery control units in a one-to-one correspondence, or each of the battery control units is integrated with one of the wireless communication units;

[0022] The wireless communication unit is used to send the status parameter to the battery management server.

[0023] Based on the technical solution provided by the present application, the present application has at least the following beneficial effects: the battery control unit directly sends the status parameters of the battery cluster to the battery management module in the battery management server by wireless means, and the battery management module determines the battery status based on these data. In addition, the energy management module in the battery management server implements management based on the battery status. Compared with the related art, on the one hand, the data upload capability of the battery control unit in the embodiment of the present application is greatly enhanced, and the battery status information can be recorded in more detail; on the other hand, the data uploaded by the battery control unit is processed by the battery management module in the battery management server with stronger computing power, so the data sampling frequency of energy management can be greatly improved, the management response is faster, and the problem of slow management response caused by information lag in the related art is solved. Therefore, the present application sets up a battery management server and cancels the BAMS in the related art, which improves the reliability of the battery management system compared with the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 A schematic diagram of the structure of a battery management system in one embodiment;

[0026] Figure 2 A schematic diagram of the structure of a battery management system provided in an embodiment of the present application;

[0027] Figure 3 This is another structural diagram of the battery management system in an embodiment of the present application;

[0028] Figure 4 This is a structural diagram of a wireless communication unit implemented in an embodiment of the present application;

[0029] Figure 5 A schematic diagram of a structure for implementing a user access port in an embodiment of the present application;

[0030] Figure 6 This is another structural diagram of the battery management system in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of the structure of the battery management platform provided in an embodiment of the present application;

[0032] Figure 8 A schematic structural diagram of a battery device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In one embodiment, Figure 1 The battery management system (BMS) shown may include a battery monitor unit (BMU), a battery control unit (BCU), a battery array management system (BAMS), and an energy management system (EMS).

[0034] For example, each battery pack (or battery module) may be provided with a BMU, or a battery pack may be equipped with a BMU, and the BMU is used to obtain status parameters of the corresponding battery pack, such as the voltage and temperature of the battery pack.

[0035] Exemplarily, a BCU is set for each cluster of batteries (including multiple battery packs), or a cluster of batteries is equipped with a BCU. The BCU is used to obtain status parameters of the corresponding cluster of batteries, such as battery cluster status parameters related to control, management, detection or calculation, such as SOX (State Of X) calculation, general fault monitoring, relay control, etc.

[0036] For example, a BAMS is set up for every 8 to 16 battery clusters (the specific number of battery clusters can be set according to needs), or in other words, a BAMS is equipped for every 8 to 16 battery clusters. The BAMS is used to transmit data and transmit instructions for the corresponding multiple battery clusters. The EMS can receive this data through the switch and perform management based on this data, such as power allocation.

[0037] For example, the BMU, BCU, and BAMS can be connected using the CAN bus protocol, and the BAMS and EMS can be connected using the TCP / IP protocol. Information is transmitted between the EMS and BAMS via an exchange machine, such as a switch connected between the BAMS and EMS. The BAMS transmits the information it acquires to the EMS via the switch, and the EMS performs management, such as power distribution. The battery management system (BMS) in this embodiment can monitor battery information.

[0038] In actual applications, information is transmitted between BMU-BCU-BAMS via CAN communication. In this embodiment, the common baud rate of CAN communication is 500kb-1MB, and the amount of information transmitted is limited. It is impossible to record a large amount of single-cell voltage, temperature, current and equilibrium status information in detail for industrial and commercial storage. When transmitted to BAMS, it is recorded once per second at most. BAMS and EMS communicate and exchange information via TCP / IP. Although the theoretical rate can reach 100M, the computing power of BAMS is usually limited, and it is unable to convert CAN information into TCP / IP information in time, resulting in the information received by EMS being recorded once every 3-5 seconds. Such a sampling frequency of EMS often leads to information lag, slow power response, and untimely fault handling, which can lead to serious consequences.

[0039] Simply put, Figure 1 In the embodiment shown, the BCU and BAMS are connected using the CAN bus protocol, and the data upload capability is relatively weak. Therefore, the recording of battery status information will be limited by this, resulting in an inability to record in more detail. Furthermore, the BAMS and EMS are connected using the TCP / IP protocol, so the BAMS needs to convert the battery information from CAN protocol data to TCP / IP protocol data. However, due to the weak computing power of the BAMS, the data sampling of the EMS will be limited by this, resulting in a low sampling frequency, which will cause information lag and, in turn, slow management response. Based on this, Figure 1 The reliability of the battery management system shown is low.

[0040] To this end, the battery management system in other embodiments of the present application can improve the reliability of the battery management system. The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0041] In another embodiment of the present application, Figure 2 As shown, the battery management system 100 may include a battery management server 110 and a plurality of battery control units 120 .

[0042] For example, multiple battery control units 120 are used to be connected to multiple battery clusters in a one-to-one correspondence, that is, one battery cluster can be equipped with one battery control unit 120, so the number of the two is equal. In the embodiment of the present application, the battery control unit 120 can be understood as Figure 1 The BCU shown, therefore, the implementation of the battery control unit 120 is not discussed in detail.

[0043] For example, the battery management server 110 can be called a cloud server. The battery management server 110 can be deployed at the installation site of the energy storage system or at a remote location. It should be noted that the deployment at a remote location mentioned here does not mean deployment at the installation site of the energy storage system. In the embodiment of the present application, the battery management server 110 includes a battery management module 111. For example, the battery management module 111 is configured with Figure 1 The software and hardware required for the implementation of the BAMS shown in the figure, that is, the battery management server 110 has Figure 1 The functions of BAMS shown in the figure are as follows: Figure 1 In the BAMS shown in FIG. 1 , the battery management module 111 of the embodiment of the present application has stronger computing power. In addition, the battery management server 110 may also include an energy management module 112. For example, the energy management module 112 is configured with Figure 1 The software and hardware required for the implementation of the EMS shown in the figure, that is, the battery management server 110 has Figure 1 The functions of EMS are shown.

[0044] The battery management module 111 is wirelessly connected to each battery control unit 120, and the energy management module 112 is wirelessly connected to each battery control unit 120. For example, both modules can be wirelessly connected to the battery control unit 120 directly or through an intermediate device. For example, both modules can be wirelessly connected to the battery control unit 120 via a local area network (LAN) or cellular communication. For example, the battery management server 110 can be deployed at the energy storage system installation site. In this case, the battery management server 110 and each battery control unit 120 can be placed in the same local area network to achieve wireless connection between the battery management module 111, the energy management module 112, and the battery control unit 120. For example, the battery management server 110 can be deployed remotely. In this case, each battery control unit 120 deployed at the energy storage system installation site can connect to the cloud management server 110 via, for example, 5G communication to achieve wireless connection between the battery management module 111, the energy management module 112, and the battery control unit 120.

[0045] Based on this, the battery control unit 120 is configured to obtain the status parameters of the battery cluster connected to it and transmit the obtained battery cluster status parameters to the battery management module 111. That is, each battery control unit 120 can obtain the status parameters of its corresponding battery cluster and wirelessly transmit these data to the battery management server 110. For example, the battery management module 111 can transmit status parameters related to battery cluster control, management, detection, or calculation. Thus, the battery management module 111 can determine the battery status based on the battery cluster status parameters transmitted by each battery control unit 120 and transmit the battery status to the energy management module 112. For example, the battery management module 111 can determine parameters related to the battery status, such as SOX, based on a preset algorithm. Furthermore, the energy management module 112 is configured to generate management instructions, such as power allocation instructions, based on the received battery status and transmit the management instructions to each battery control unit 120. For example, the battery control unit 120 controls the battery according to the received instructions.

[0046] It can be seen that in the embodiment of the present application, the battery control unit 120 directly sends the status parameters of the battery cluster to the battery management server 110 via wireless, and the battery management module 111 and the energy management module 112 in the battery management server 110 process and implement management. Figure 1 Compared with the battery management system shown in FIG, on the one hand, the data upload capability of the battery control unit 120 in the embodiment of the present application is greatly enhanced, and the battery status information can be recorded in more detail, for example, Figure 1 The BCU shown in the figure can only upload data once every 1 second (hypothetical duration) due to the connection of the BAMS to the CAN bus protocol. However, by adopting the method of the embodiment of the present application, the cycle of uploading data by the battery control unit 120 will be greatly shortened, so the record of battery status information will be more detailed. On the other hand, the data uploaded by the battery control unit 120 will be processed by the battery management server 110 with stronger computing power, so the data sampling frequency can be greatly improved, the management response is faster, and the problem of Figure 1 The problem of information lag in the battery management system causing slow management response is solved. Therefore, the embodiment of the present application sets up a battery management server 110, canceling the Figure 1 The BAMS of the battery management system improves the reliability of the battery management system 100.

[0047] In some embodiments, as Figure 3As shown, the battery management system 100 may also include a plurality of wireless communication units 130, and the plurality of wireless communication units 130 are connected to the plurality of battery control units 120 in a one-to-one correspondence, that is, a wireless communication unit 130 is provided for each battery control unit 120. In this way, the fault resistance of the system can be improved and the reliability can be improved. For example, when a failure occurs in one of the wireless communication units 130, it will not affect the normal operation of other wireless communication units 130. The wireless communication units 130 are respectively connected to the battery management module 111 and the energy management module 112. In addition, it should be noted that in the embodiment of the present application, the wireless communication unit 130 can be a device with wireless communication function such as a T-box transmitter, and the embodiment of the present application does not limit the specific implementation of the wireless communication unit 130.

[0048] For example, the wireless communication unit 130 and the battery control unit 120 connected thereto can be connected using the TCP / IP protocol. For example, multiple wireless communication units 130 can be centrally deployed on a single device, so that the device can be deployed independently of the battery control unit 120, making it easier for users to install and use the device. For example, the wireless communication unit 130 can be embedded in (or integrated into) the battery control unit 120 connected thereto, which can save material usage and reduce costs.

[0049] In some embodiments, as Figure 4 As shown, the wireless communication unit 130 may be provided with a gain antenna 131. The wireless communication unit 130 transmits the status parameters of the battery cluster sent by the battery control unit 120 connected thereto via the gain antenna 131, i.e., transmits them to the battery management module 111. In addition, the wireless communication unit 130 receives the management instructions sent by the energy management module 112 via the gain antenna 131. Therefore, the stability of wireless transmission can be improved by the enhancement effect of the gain antenna 131. In some embodiments, the wireless communication unit 130 may also be provided with a signal amplification circuit 132, which is connected to the gain antenna 131, that is, before wirelessly transmitting data, it is first amplified, which can improve the reliability of the data and thus improve the stability of wireless transmission.

[0050] In some embodiments, as Figure 5As shown, the battery management server 110 can also be configured with a user access port, which is used to send battery status information to the user terminal connected to it. Exemplarily, the user terminal can be connected to the user access port wirelessly to the battery management server 110, for example, by logging in to a web page. In this way, the user can select the required battery status information and instruct the battery management server 110 to send this data. It can be seen that through the embodiments of the present application, remote control can be achieved no matter where the user is, thereby improving user convenience.

[0051] In some embodiments, as Figure 6 As shown, the battery management module 100 may further include a plurality of battery monitoring unit groups 140, and the plurality of battery monitoring unit groups 140 are connected to the plurality of battery control units 120 in a one-to-one correspondence, that is, one battery monitoring unit group 140 is provided with one battery control unit 120. For example, the battery monitoring unit group 140 includes a plurality of battery monitoring units 141, and the implementation of the battery monitoring unit 141 is similar to that of the battery monitoring unit 141. Figure 1 The BMUs shown in the figure are the same and will not be discussed in detail in the present embodiment. For example, any battery monitoring unit 141 and the battery control unit 120 may be connected using the CAN protocol.

[0052] In some embodiments, the battery management platform, such as Figure 7 As shown, it includes the battery management system 100 and the battery module 200 as described in any of the above embodiments. It can be understood that the battery management system 100 is used to manage and control the battery module 200. The specific implementation is discussed in conjunction with the above, and will not be repeated here.

[0053] In some embodiments, the battery device, such as Figure 8 As shown, it includes multiple battery clusters, multiple battery control units, multiple wireless communication units, and a battery management server. For example, the number of battery clusters, battery control units, and wireless communication units is the same.

[0054] Multiple battery control units are connected to multiple battery clusters in a one-to-one correspondence, and are used to obtain status parameters of the connected battery clusters. Multiple wireless communication units are connected to multiple battery control units in a one-to-one correspondence. Alternatively, each battery control unit is integrated with a wireless communication unit. Therefore, each battery control unit can wirelessly connect to a battery management server via its corresponding wireless communication unit. The wireless communication unit is used to transmit the status parameters to the battery management server.

[0055] In this embodiment of the present application, the battery control unit is configured to obtain status parameters of the battery cluster connected to it and transmit the obtained battery cluster status parameters to the battery management server. The battery management server is configured to determine the battery status based on the battery cluster status parameters transmitted by each battery control unit; and generate management instructions based on the battery status and transmit the instructions to each battery control unit. For detailed implementation, please refer to the discussion above. This embodiment of the present application can improve the reliability of battery management.

[0056] The term "connection" (if any) in the specification, claims or above-mentioned drawings of this application should be understood broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection, and "connection" can be a direct connection or an indirect connection through an intermediate medium.

[0057] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A battery management system, characterized in that: include: A plurality of battery control units, each of which is connected to a plurality of battery clusters in a one-to-one correspondence; and a battery management server, the battery management server comprising a battery management module and an energy management module, the battery management module being connected to the energy management module; the battery management module being wirelessly connected to each of the battery control units, and the energy management module being wirelessly connected to each of the battery control units; The battery control unit is configured to obtain status parameters of the battery cluster connected thereto and send the obtained status parameters of the battery cluster to the battery management module; the battery management module is configured to determine the battery status based on the status parameters of the battery cluster sent by each battery control unit and send the battery status to the energy management module; The energy management module is used to generate a management instruction according to the battery status and send the management instruction to each battery control unit.

2. The battery management system according to claim 1, characterized in that: It also includes a plurality of wireless communication units; the plurality of wireless communication units are connected to the plurality of battery control units in a one-to-one correspondence; The wireless communication unit is connected to the battery management module and the energy management module respectively.

3. The battery management system according to claim 2, characterized in that: The wireless communication unit is provided with a gain antenna; The wireless communication unit transmits the state parameters of the battery cluster sent by the battery control unit connected thereto through the booster antenna, and receives the management instructions sent by the energy management module.

4. The battery management system according to claim 3, characterized in that: The wireless communication unit is further provided with a signal amplification circuit; The signal amplifying circuit is connected to the boost antenna.

5. The battery management system according to claim 3, characterized in that: The wireless communication unit and the battery control unit connected thereto are connected using the TCP / IP protocol.

6. The battery management system according to any one of claims 1 to 5, characterized in that: The battery management server is also configured with a user access port; The user access port is used to send battery status information to a user terminal connected thereto.

7. The battery management system according to any one of claims 1 to 5, characterized in that: Also included are a plurality of battery monitoring unit groups; The multiple battery monitoring unit groups are connected to the multiple battery control units in a one-to-one correspondence.

8. The battery management system according to claim 7, characterized in that: The battery monitoring unit group includes a plurality of battery monitoring units; Any of the battery monitoring units is connected to the battery control unit using the CAN protocol.

9. A battery management platform, characterized in that: The invention comprises a battery module and a battery management system according to any one of claims 1 to 8.

10. A battery device, characterized in that: include: multiple battery clusters; a plurality of battery control units, each of which is connected to the plurality of battery clusters in a one-to-one correspondence and configured to obtain status parameters of the battery clusters connected thereto; A plurality of wireless communication units, each of which is connected to each of the battery control units in a one-to-one correspondence, or each of the battery control units is integrated with one of the wireless communication units; The wireless communication unit is used to send the status parameter to the battery management server.

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