Distributed battery intelligent management system based on wireless communication

Abstract

The invention provides a distributed battery intelligent management system based on wireless communication, the battery intelligent management system comprises a plurality of battery cell modules and a control module, the plurality of battery cell modules are connected in series through series connection wires, the control module comprises a battery cell controller and a battery pack management unit, and the battery pack management unit is connected with the battery cell controller. The battery cell controller is connected with the battery cell modules in a receiving mode through information wires, the series connection terminals are connected with internal circuits of the battery cell modules in parallel, the series connection terminals at the two ends of the interior of each battery cell module are connected in series through series connection wires, and the outer sides of the adjacent battery cell modules are connected in series through the series connection terminals. The battery management function is distributed to the battery module level, distributed management is achieved, calculation is more accurate, faster, more timely and more intelligent, the data granularity is smaller, and the fault state of the battery cell can be effectively captured.

Description

Technical Field

[0001] This article belongs to the technical field of wireless communication battery management, and specifically relates to a distributed battery intelligent management system based on wireless communication. Background Art

[0002] The traditional energy storage battery management system is divided into three levels, namely the battery module acquisition unit, the battery cluster management unit and the battery pack management unit. Its defects are obvious, mainly:

[0003] 1. A long wiring harness network is required to connect each module and battery cluster, which is costly;

[0004] 2. The wiring harness network is complex and time-consuming to build;

[0005] 3. Complex reassembly and poor flexibility;

[0006] 4 At the battery module level, the acquisition unit only has basic data acquisition functions and cannot realize complex management functions;

[0007] 5. Lack of effective and timely fault diagnosis;

[0008] 6. Lack of accurate battery algorithm;

[0009] 7. The battery module cannot trace historical usage data to achieve efficient cascade utilization.

[0010] Among them, the reasons for the last four defects are that the battery module acquisition unit lacks sufficient data input, especially the lack of accurate real-time current and current relay status; its computing power is limited and cannot reliably calculate the SOC (State of Charge) state of charge; its controlled execution instructions do not have active management functions; it is unable to save data and utilize them in tiered manner. Summary of the invention

[0011] In order to solve the above problems, this paper proposes a distributed battery intelligent management system based on wireless communication. The battery intelligent management system includes a plurality of battery cell modules and a control module. The plurality of battery cell modules are connected in series with each other through series wires. The control module includes a battery cell controller and a battery pack management unit. The battery cell controller is connected to the battery cell module in a receiving manner through an information wire. The series terminal is connected in parallel with the internal circuit of the battery cell module. The series terminals at both ends of the battery cell module are connected in series with each other through series wires. The outer sides of adjacent battery cell modules are connected in series with each other through series terminals. The battery cell modules are connected to the battery cell controller in a wireless output manner. The battery cell controller is connected to the battery pack management unit in a wireless output manner. The battery cell controller is connected to the battery cell module and the battery pack management unit in a wireless receiving manner. The battery pack management unit is connected to the battery cell controller in a wireless output and receiving manner. The management function of the battery is distributed to the battery module level to realize distributed management. The calculation is more accurate, faster, more timely, and more intelligent. The data granularity is smaller, which can effectively capture the fault status of the battery cell.

[0012] The cell module is a single independent cell assembly module, and a wireless transmitter is provided inside the cell module. The electrode end of the cell module is connected to the serial terminal in parallel, and the two ends of the cell module are symmetrically provided with serial terminals. The serial terminals are transmission-type serial-parallel conducting terminals, and the left and right sides of the serial terminals are provided with serial ports, and the upper and lower ends of the serial terminals are provided with parallel ports. The serial ports are connected to the serial wires, and the parallel ports are connected to the cell module. The serial wires are conductive conductive wires, and the two ends of the serial wires are respectively connected to the serial terminals. The serial wires are respectively provided on the inner side of a single cell module or between adjacent cell modules, so as to realize distributed management and lifelong record data storage. Based on these data, when the battery module is used in a cascade (due to the limitation of the service life of the energy storage system, the batteries that are eliminated can be used in systems with lower requirements or recycled), the status of the battery module and even the cell can be evaluated more comprehensively and accurately, so as to realize efficient and safe use.

[0013] The information conductor is bidirectionally output and connected to the battery controller. The information conductors are respectively arranged at both ends of the battery modules connected in series, which can flexibly adjust the number of battery modules in the battery cluster to meet the different needs of customers.

[0014] The cell controller is a wireless independent cell controller. The cell controller is connected to the battery pack management unit through wireless transmission. When the battery modules are combined into a battery cluster or even the entire energy storage system, it is wireless and not restricted by the communication harness, so the combination deployment can be completed quickly.

[0015] The battery pack management unit is located on the outside of the battery cell module and the battery cell controller. The battery pack management unit outputs and receives with the battery cell controller in an independent wireless transmission manner, adopts wireless communication, does not require a complex and lengthy wiring harness network, and saves wiring harness costs.

[0016] Beneficial effects:

[0017] The battery management function is distributed to the battery module level to achieve distributed management. The calculation is more accurate, faster, more timely, and smarter, and the data granularity is smaller, which can effectively capture the fault status of the battery cell.

[0018] Realize distributed management and lifelong record data storage. Based on these data, when the battery modules are recycled (in the energy storage system, the batteries that are eliminated due to the limitation of service life can be used in systems with lower requirements or recycled), the status of the battery modules and even the cells can be evaluated more comprehensively and accurately, and efficient and safe use can be achieved.

[0019] Wireless communication is adopted, which eliminates the need for complex and lengthy wiring harness networks and saves wiring harness costs.

[0020] When battery modules are combined into battery clusters or even the entire energy storage system, wireless communication is used and is not restricted by communication harnesses, allowing for rapid deployment.

[0021] The number of battery modules in the battery cluster can be flexibly adjusted to meet the different needs of customers.

[0022] By adopting encryption algorithms, wireless communication can overcome the information leakage problem caused by wired communication interfaces in traditional battery management systems and improve information security. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a circuit diagram of a distributed battery intelligent management system based on wireless communication;

[0024] In the figure; 1. battery cell module, 2. series terminal, 3. series wire, 4. information wire, 5. battery cell controller, 6. battery pack management unit. DETAILED DESCRIPTION

[0025] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0026] Battery cell module 1, series terminal 2, series wire 3, information wire 4, battery cell controller 5, battery pack management unit 6.

[0027] like Figure 1 As shown;

[0028] A distributed battery intelligent management system based on wireless communication, the battery intelligent management system includes a plurality of battery modules 1 and a control module, the plurality of battery modules 1 are connected in series with each other through a series conductor 3, the control module includes a battery controller 5 and a battery pack management unit 6, the battery controller 5 is connected to the battery module 1 in a receiving manner through an information conductor 4, the series terminal 2 is connected in parallel with the internal circuit of the battery module 1, the series terminals 2 at both ends of the battery module 1 are connected in series with each other through a series conductor 3, the outer sides of adjacent battery modules 1 are connected in series with each other through the series terminals 2, the battery modules 1 are all connected to the battery controller 5 in a wireless output manner, the battery controller 5 is connected to the battery pack management unit 6 in a wireless output manner, the battery controller 5 is connected to the battery module 1 and the battery pack management unit 6 in a wireless receiving manner, the battery pack management unit 6 is connected to the battery controller 5 in a wireless output and receiving manner, the battery module 1 is a single independent battery component module, and the battery module 1 is provided with a wireless The battery module 1 is a line transmitter, the electrode end of the battery module 1 is connected to the series terminal 2 in parallel, the two ends of the battery module 1 are symmetrically provided with the series terminal 2, the series terminal 2 is a transmission-type series-parallel conducting terminal, the left and right sides of the series terminal 2 are provided with a series interface, the upper and lower ends of the series terminal 2 are provided with a parallel port, the series interface is connected to the series wire 3, the parallel port is connected to the battery module 1, the series wire 3 is a conductive conductive wire, the two ends of the series wire 3 are respectively connected to the series terminal 2, and the series wire 3 is respectively provided on the single The information conductor 4 is bidirectionally output and connected to the cell controller 5 on the inner side of each cell module 1 or between adjacent cell modules 1. The information conductor 4 is respectively arranged at both ends of the serially connected cell modules 1. The cell controller 5 is a wireless independent cell controller 5. The cell controller 5 is controlled and connected with the battery pack management unit 6 through wireless transmission. The battery pack management unit 6 is arranged on the outside of the cell module 1 and the cell controller 5. The battery pack management unit 6 outputs and receives with the cell controller 5 through independent wireless transmission.

[0029] Implementation examples;

[0030] Wireless communication is adopted between the battery cell module 1, the battery cell controller 5 and the battery pack management unit 6, including Bluetooth and wifi. Due to the adoption of wireless communication, there is no need for a complex and lengthy wiring harness network, saving wiring harness costs. Moreover, when the battery modules are combined into a battery cluster or even the entire energy storage system, due to wireless communication, they are not constrained by the communication harness and can be quickly deployed. Wireless communication uses an encryption algorithm to prevent information leakage.

[0031] The cell controller 5 can obtain sufficient data input and can accurately calculate the status of the battery module and even each cell. The calculation is more accurate, faster, more timely, smarter, and the data granularity is smaller, which can effectively capture the fault status of the cell. However, in traditional wired battery management systems, the above calculations can only be performed after all battery module acquisition units are uploaded to the battery cluster management unit, which has a lag and cannot obtain the fault status in the first time.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A distributed battery intelligent management system based on wireless communication, the battery intelligent management system includes a plurality of battery modules and a control module, characterized in that: The plurality of battery cell modules are connected in series with each other via series wires, the control module comprises a battery cell controller and a battery pack management unit, the battery cell controller is connected to the battery cell module in a receiving manner via information wires, the series terminals are connected in parallel with the internal circuit of the battery cell module, the series terminals at both ends of the battery cell module are connected in series with each other via series wires, the outer sides of adjacent battery cell modules are connected in series with each other via series terminals, the battery cell modules are all connected to the battery cell controller in a wireless output manner, the battery cell controller is connected to the battery pack management unit in a wireless output manner, the battery cell controller is connected to the battery cell module and the battery pack management unit in a wireless receiving manner, and the battery pack management unit is connected to the battery cell controller in a wireless output and receiving manner.

2. A distributed battery intelligent management system based on wireless communication according to claim 1, characterized in that: The battery cell module is a single independent battery cell assembly module, a wireless transmitter is provided inside the battery cell module, the electrode end of the battery cell module is connected in parallel with the series terminal, and the two ends of the battery cell module are symmetrically provided with the series terminal.

3. According to the wireless communication-based distributed battery intelligent management system of claim 1, it is characterized in that: The serial terminal is a transmission-type serial-parallel conducting terminal, with serial interfaces on the left and right sides of the serial terminal and parallel ports on the upper and lower ends of the serial terminal. The serial interfaces are connected to the serial wires, and the parallel ports are connected to the battery module.

4. A distributed battery intelligent management system based on wireless communication according to claim 1, characterized in that: The series connection wire is a conductive conductive wire, and both ends of the series connection wire are respectively connected to the series connection terminals. The series connection wire is respectively arranged on the inner side of a single battery cell module or between adjacent battery cell modules.

5. The distributed battery intelligent management system based on wireless communication according to claim 1 is characterized in that: The information wire is bidirectionally output and connected to the battery controller. The information wire is respectively arranged at two ends of the battery modules connected in series.

6. A distributed battery intelligent management system based on wireless communication according to claim 1, characterized in that: The cell controller is a wireless independent cell controller, which is connected to the battery pack management unit through wireless transmission.

7. A distributed battery intelligent management system based on wireless communication according to claim 1, characterized in that: The battery pack management unit is arranged outside the battery cell module and the battery cell controller, and the battery pack management unit outputs and receives with the battery cell controller in an independent wireless transmission manner.

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