Energy storage PACK safety monitoring system

Abstract

The utility model relates to the technical field of energy storage PACK safety monitoring, and discloses an energy storage PACK safety monitoring system, the energy storage PACK comprises a plurality of battery modules arranged in sequence, each battery module comprises an electric connection assembly and a plurality of battery cells arranged in sequence, the battery cells are connected with the electric connection assembly, and the battery cells are connected with the electric connection assembly. The energy storage PACK safety monitoring system comprises an air pressure monitoring module, an information acquisition module and a communication module, the air pressure monitoring module is used for monitoring air pressure in the battery cell, the information acquisition module is arranged on the electric connection assembly, the air pressure monitoring module is electrically connected with the information acquisition module, and the communication module is electrically connected with the information acquisition module. And the information acquisition module is electrically connected with the communication module. The utility model has the following technical effects: the air pressure monitoring module is directly and electrically connected with the information acquisition module arranged on the electric connection assembly, and then the information acquisition module is electrically connected with the communication module, so that the arrangement of an air pressure acquisition BMU is omitted, the connection relation is simplified, the production cost is favorably reduced, and the stability is high.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage PACK safety monitoring technology, and specifically relates to an energy storage PACK safety monitoring system. Background Technology

[0002] With the rapid development of the energy storage industry, the demand for energy storage PACKs is also constantly increasing, and safety is crucial for energy storage PACKs. In existing technologies, safety monitoring devices are typically installed in energy storage PACKs to monitor various parameters of the battery cells in real time. For example, a pressure monitoring device is used to monitor the pressure of the battery cells, and this device is connected to a pressure acquisition unit (BMU) via a wiring harness to collect the pressure information. The BMU is then connected to a communication device via another wiring harness to achieve information synchronization and interaction with external systems. However, the connection between the pressure monitoring device and the communication device via the BMU complicates the internal connections of the energy storage PACK, increasing material and assembly costs. Furthermore, the intertwining and coiling of multiple wiring harnesses makes the connections between components prone to mutual interference, increasing overall connection instability and hindering real-time safety monitoring of the energy storage PACK. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model provides an energy storage PACK safety monitoring system. By setting an information acquisition module on the electrical connection component, the air pressure monitoring module is directly electrically connected to the information acquisition module, and then the information acquisition module is electrically connected to the communication module. This eliminates the need for a separate air pressure acquisition BMU, simplifies the connection and transfer between the air pressure monitoring module and the communication module, reduces raw material and assembly costs, and enhances overall reliability.

[0004] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0005] This utility model provides an energy storage PACK safety monitoring system. The energy storage PACK includes multiple battery modules arranged in sequence. Each battery module includes an electrical connection component and multiple battery cells arranged in sequence. The battery cells are connected to the electrical connection component. The energy storage PACK safety monitoring system includes a pressure monitoring module, an information acquisition module, and a communication module. The pressure monitoring module is used to monitor the air pressure inside the battery cells. The information acquisition module is disposed on the electrical connection component and is electrically connected to the pressure monitoring module and the information acquisition module. The information acquisition module is electrically connected to the communication module.

[0006] As a further description of the technical solution of this utility model, the electrical connection assembly includes a conductive busbar and a flexible circuit board connected as one unit, and the battery cells are connected in series or in parallel through the conductive busbar;

[0007] The information acquisition module includes multiple information acquisition connectors, and each information acquisition connector is correspondingly disposed on the flexible circuit board of one of the battery modules.

[0008] As a further description of the technical solution of this utility model, the air pressure monitoring module includes multiple air pressure monitors, each of which is correspondingly disposed on one of the battery cells, and the air pressure monitors are electrically connected to the information acquisition connector.

[0009] As a further description of the technical solution of this utility model, a relay connector is provided on the flexible circuit board at the position corresponding to the air pressure monitor. The air pressure monitor is connected to the relay connector via a flexible flat cable. The relay connector is connected to the information acquisition connector via a first wire printed on the flexible circuit board.

[0010] As a further description of the technical solution of this utility model, it also includes a temperature monitoring module for monitoring the temperature of the battery cell and a voltage monitoring module for monitoring the voltage of the battery cell, both of which are electrically connected to the information acquisition connector.

[0011] As a further description of the technical solution of this utility model, it also includes a battery management module. The information acquisition connector is connected to the communication module through a first wire harness, the first wire harness being used to transmit the air pressure information of the battery cell. The information acquisition connector is connected to the battery management module through a second wire harness, the second wire harness being used to transmit the temperature and voltage information of the battery cell. The battery management module is connected to the communication module through a third wire harness.

[0012] As a further description of the technical solution of this utility model, the temperature monitoring module includes a temperature monitor disposed on the conductive bar, and the temperature monitor is connected to the information acquisition connector through a second wire printed on the flexible circuit board;

[0013] The voltage monitoring module includes a voltage sampling wire printed on the flexible circuit board, which is connected between the conductive busbar and the information acquisition connector.

[0014] As a further description of the technical solution of this utility model, in the same battery module, the number of the voltage sampling wires matches the number of the battery cells, and the number of temperature monitors is less than or equal to the number of the battery cells.

[0015] As a further description of the technical solution of this utility model, the temperature monitor is a thermistor.

[0016] As a further description of the technical solution of this utility model, the communication module includes a communication connector, and the information acquisition module is electrically connected to the communication connector.

[0017] In summary, this utility model has at least the following advantages:

[0018] The energy storage PACK safety monitoring system provided by this utility model eliminates the need for a separate air pressure acquisition unit (BMU) by setting an information acquisition module on the electrical connection component, directly connecting the air pressure monitoring module to the information acquisition module, and then connecting the information acquisition module to the communication module. This simplifies the connection and transfer between the air pressure monitoring module and the communication module, reduces the overall size of the energy storage PACK, effectively lowers raw material and assembly costs, and improves the overall stability and reliability of the energy storage PACK safety monitoring system. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the energy storage PACK safety monitoring system according to Embodiment 1 of this utility model;

[0020] Figure 2 This is a schematic diagram of the battery module structure according to Embodiment 1 of this utility model;

[0021] Figure 3 for Figure 2 Enlarged view of section A;

[0022] Figure 4 This is a schematic diagram of the air pressure monitor according to Embodiment 2 of this utility model;

[0023] Figure 5 This is a schematic diagram of the transfer connector in Embodiment 2 of this utility model;

[0024] Figure 6 for Figure 5 Enlarged view of section B;

[0025] Figure 7 This is a schematic diagram of the communication module, temperature monitoring module, and voltage monitoring module of Embodiment 3 of this utility model;

[0026] Figure 8 for Figure 7 Enlarged view of section C.

[0027] Marked in the image:

[0028] 1. Barometric pressure monitoring module; 11. Barometric pressure monitor; 12. Transit connector;

[0029] 2. Information acquisition module; 21. Information acquisition connector;

[0030] 3. Communication module; 31. Communication connector;

[0031] 4. Temperature monitoring module; 41. Temperature monitor;

[0032] 5. Voltage monitoring module; 6. Battery management module;

[0033] 100. Battery module; 200. Electrical connection assembly; 300. Battery cell; 400. Conductor busbar; 500. Flexible circuit board. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] refer to Figures 1 to 3 The energy storage PACK safety monitoring system provided in this embodiment includes multiple battery modules 100 arranged in sequence. Each battery module 100 includes an electrical connection component 200 and multiple battery cells 300 arranged in sequence. Each battery cell 300 in the battery module 100 is connected to the electrical connection component 200. The energy storage PACK safety monitoring system includes a pressure monitoring module 1, an information acquisition module 2, and a communication module 3. The pressure monitoring module 1 is used to monitor the pressure inside the battery cells 300. The information acquisition module 2 is mounted on the electrical connection component 200 and is electrically connected to both the pressure monitoring module 1 and the communication module 3. The information acquisition module 2 can collect and summarize the pressure information of each battery cell 300 in the battery module 100, and then transmit the pressure information of the battery cells 300 to the communication module 3 to achieve information synchronization and interaction with external systems.

[0038] It is understandable that by setting the information acquisition module 2 on the electrical connection component 200 of the battery module 100, directly connecting the air pressure monitoring module 1 to the information acquisition module 2, and then connecting the information acquisition module 2 to the communication module 3, the setting of the air pressure acquisition BMU can be eliminated, simplifying the connection relay between the air pressure monitoring module 1 and the communication module 3. Moreover, the information acquisition module 2 occupies little space, thereby effectively reducing the overall volume of the energy storage PACK, which is conducive to reducing raw material costs and assembly costs. At the same time, the simplification of the connection relationship is also conducive to improving the overall stability and reliability of the energy storage PACK safety monitoring system.

[0039] In some embodiments, the electrical connection assembly 200 includes a conductive bus 400 and a flexible circuit board 500 connected as a single unit. The electrodes of two adjacent battery cells 300 are connected to the same conductive bus 400, enabling series or parallel connection between the battery cells 300 through the conductive bus 400. The information acquisition module 2 includes multiple information acquisition connectors 21, each of which is correspondingly located at the end of the flexible circuit board 500 of a battery module 100. The flexible circuit board 500 can be an FPC or an FDC.

[0040] In some implementations, the electrical connection components 200 of each battery module 100 are integrated into one unit through a thermoforming film, thereby connecting each battery module 100 into a whole and improving the overall connection stability of the energy storage PACK. Using a conductive busbar 400 and a flexible circuit board 500 as the electrical connection components 200 occupies less space, effectively reducing the overall volume of the energy storage PACK, lowering raw material costs, and simultaneously reducing assembly difficulty and costs. Placing the information acquisition connector 21 on the flexible circuit board 500 further enhances the overall integration of the energy storage PACK and the energy storage PACK safety monitoring system, which is beneficial for improving the stability and reliability of the energy storage PACK safety monitoring system.

[0041] The energy storage PACK safety monitoring system in this embodiment directly connects the pressure monitoring module to the information acquisition module mounted on the electrical connection assembly, and then connects the information acquisition module to the communication module. This eliminates the need for a separate pressure acquisition BMU, simplifies the connection and transfer between the pressure monitoring module and the communication module, reduces raw material and assembly costs, and improves the overall stability and reliability of the energy storage PACK safety monitoring system. By using busbars and flexible circuit boards as electrical connection components, the overall size of the energy storage PACK is reduced, further lowering raw material and assembly costs. Placing the information acquisition connector on the flexible circuit board increases the overall integration of the energy storage PACK and the energy storage PACK safety monitoring system, further enhancing the stability and reliability of the energy storage PACK safety monitoring system.

[0042] Example 2

[0043] As a further optimization of Example 1, refer to Figures 4 to 6 The air pressure monitoring module 1 includes multiple air pressure monitors 11, each corresponding to a battery cell 300. Within the same battery module 100, each air pressure monitor 11 is electrically connected to the same information acquisition connector 21, which collects and summarizes the air pressure information monitored by each monitor 11. In this embodiment, the air pressure monitor 11 is positioned between two electrodes of the battery cell 300.

[0044] As one implementation, a relay connector 12 is provided on the flexible circuit board 500 at the position corresponding to the air pressure monitor 11. The air pressure monitor 11 is connected to the relay connector 12 via a flexible flat cable. The relay connector 12 is connected to the information acquisition connector 21 via a first wire printed on the flexible circuit board 500.

[0045] Example 3

[0046] As a further optimization of Example 2, refer to Figures 7 to 8 The energy storage PACK safety monitoring system also includes a temperature monitoring module 4 for monitoring the temperature of the battery cell 300 and a voltage monitoring module 5 for monitoring the voltage of the battery cell 300. Both the temperature monitoring module 4 and the voltage monitoring module 5 are electrically connected to the information acquisition connector 21. The information acquisition connector 21 on each battery module 100 can collect and summarize the temperature and voltage information of each battery cell 300 on the battery module 100. Through the cooperation of the air pressure monitoring module 1, the temperature monitoring module 4, and the voltage monitoring module 5, real-time monitoring of the air pressure, temperature, and voltage information of each battery cell in the energy storage PACK is realized, effectively improving the overall safety of the energy storage PACK.

[0047] In some implementations, the energy storage PACK safety monitoring system further includes a battery management module 6. An information acquisition connector 21 is connected to a communication module 3 via a first wiring harness for transmitting the air pressure information of the battery cell 300. The information acquisition connector 21 is also connected to the battery management module 6 via a second wiring harness for transmitting the temperature and voltage information of the battery cell 300. The battery management module 6 is connected to the communication module 3 via a third wiring harness. The information acquisition connector 21 transmits the collected temperature and voltage information of each battery cell to the battery management module 6 for processing and management. The battery management module 6 then transmits the temperature and voltage information of each battery cell to the communication module 3 to achieve information synchronization and interaction with external systems.

[0048] Temperature monitoring module 4 includes a temperature monitor 41 soldered onto a conductive busbar 400. The temperature monitor 41 is connected to the information acquisition connector 21 via a second wire printed on a flexible circuit board 500. The second wire transmits the temperature information monitored by the temperature monitor 41 to the information acquisition connector 21. Voltage monitoring module 5 includes a voltage sampling wire printed on a flexible circuit board 500. The voltage sampling wire is connected between the conductive busbar 400 and the information acquisition connector 21. The voltage sampling wire monitors the voltage information of the battery cell 300 through the conductive busbar 400 and transmits the voltage information directly to the information acquisition connector 21.

[0049] In this embodiment, the conductive bus 400 is an aluminum busbar, and the temperature monitor 41 is a thermistor. The thermistor is soldered onto the aluminum busbar, and the thermistor, aluminum busbar, and battery cell 300 are in close contact. The thermistor can accurately sense the temperature of the battery cell 300 and obtain the temperature information of the battery cell 300 in real time. Using a thermistor for temperature monitoring of the battery cell 300 has high sensing sensitivity and the monitoring results are accurate and reliable.

[0050] It should be noted that in this embodiment, in the same battery module 100, the number of voltage sampling wires matches the number of battery cells 300, and the number of temperature monitors 41 is less than or equal to the number of battery cells 300. The voltage monitoring module 5 performs real-time voltage monitoring on each battery cell 300, while the temperature monitoring module 4 can be set to monitor the temperature of each battery cell 300 or a portion of the battery cells 300 according to actual needs.

[0051] In some implementations, the communication module 3 includes a communication connector 31, and each information acquisition connector 21 and the battery management module 6 are electrically connected to the same communication connector 31, so as to realize information synchronization and interaction with external systems through the communication connector 31.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A safety monitoring system for an energy storage PACK, the energy storage PACK comprising a plurality of battery modules (100) arranged in sequence, each battery module (100) comprising an electrical connection assembly (200) and a plurality of battery cells (300) arranged in sequence, the battery cells (300) being connected to the electrical connection assembly (200), characterized in that, It includes a pressure monitoring module (1), an information acquisition module (2), and a communication module (3). The pressure monitoring module (1) is used to monitor the pressure inside the battery cell (300). The information acquisition module (2) is disposed on the electrical connection assembly (200). The pressure monitoring module (1) is electrically connected to the information acquisition module (2), and the information acquisition module (2) is electrically connected to the communication module (3).

2. The energy storage PACK safety monitoring system according to claim 1, characterized in that, The electrical connection assembly (200) includes a conductive bus (400) and a flexible circuit board (500) connected as one unit, and the battery cells (300) are connected in series or in parallel through the conductive bus (400); The information acquisition module (2) includes multiple information acquisition connectors (21), each of which is disposed on the flexible circuit board (500) of a battery module (100).

3. The energy storage PACK safety monitoring system according to claim 2, characterized in that, The air pressure monitoring module (1) includes multiple air pressure monitors (11), each of which is disposed on a battery cell (300), and the air pressure monitor (11) is electrically connected to the information acquisition connector (21).

4. The energy storage PACK safety monitoring system according to claim 3, characterized in that, A relay connector (12) is provided on the flexible circuit board (500) at the position corresponding to the air pressure monitor (11). The air pressure monitor (11) is connected to the relay connector (12) via a flexible flat cable. The relay connector (12) is connected to the information acquisition connector (21) via a first wire printed on the flexible circuit board (500).

5. The energy storage PACK safety monitoring system according to claim 2, characterized in that, It also includes a temperature monitoring module (4) for monitoring the temperature of the battery cell (300) and a voltage monitoring module (5) for monitoring the voltage of the battery cell (300), both of which are electrically connected to the information acquisition connector (21).

6. The energy storage PACK safety monitoring system according to claim 5, characterized in that, It also includes a battery management module (6), the information acquisition connector (21) is connected to the communication module (3) through a first wire harness, the first wire harness is used to transmit the air pressure information of the cell (300), the information acquisition connector (21) is connected to the battery management module (6) through a second wire harness, the second wire harness is used to transmit the temperature and voltage information of the cell (300), and the battery management module (6) is connected to the communication module (3) through a third wire harness.

7. The energy storage PACK safety monitoring system according to claim 5, characterized in that, The temperature monitoring module (4) includes a temperature monitor (41) disposed on the conductive bar (400), and the temperature monitor (41) is connected to the information acquisition connector (21) through a second wire printed on the flexible circuit board (500); The voltage monitoring module (5) includes a voltage sampling wire printed on the flexible circuit board (500), which is connected between the conductive bus (400) and the information acquisition connector (21).

8. The energy storage PACK safety monitoring system according to claim 7, characterized in that, In the same battery module (100), the number of the voltage sampling wires matches the number of the battery cells (300), and the number of the temperature monitors (41) is less than or equal to the number of the battery cells (300).

9. The energy storage PACK safety monitoring system according to claim 7, characterized in that, The temperature monitor (41) is a thermistor.

10. The energy storage PACK safety monitoring system according to claim 1, characterized in that, The communication module (3) includes a communication connector (31), and the information acquisition module (2) is electrically connected to the communication connector (31).

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