Battery modules and electrical equipment

Abstract

This application provides a battery module and an electrical device. The battery module includes a housing, a cell assembly, a first monitoring component, and a second monitoring component. The housing includes a bottom plate and multiple side plates connected to each other, which together form a receiving cavity with a first port. The cell assembly is disposed within the receiving cavity and includes multiple cells stacked along a first direction. The first monitoring component is directly connected to each cell and is used to monitor first operating data of the cell. The second monitoring component is disposed on one side of the cell assembly and is used to monitor second operating data of the cell. The first monitoring component includes a first transmission port, and the second monitoring component includes a second transmission port. The first and second transmission ports are spaced apart. Through the collaborative work of the first and second monitoring components, the operating status of each cell can be monitored in real time and accurately, reducing the design complexity of the monitoring components.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery module and electrical equipment. Background Technology

[0002] Lithium-ion batteries are rechargeable batteries with advantages such as high energy density and long cycle life. They are widely used in portable electronic devices and electric vehicles. In the research, development, production and quality control of lithium batteries, modular testing is an important means of evaluating battery performance.

[0003] During the testing phase of lithium batteries, battery modules in related technologies often suffer from limitations in size and structure, cumbersome testing processes, high testing costs, and insufficient flexibility in testing schemes, making it difficult to meet the demands of rapidly developing battery technologies for efficient and flexible testing methods. Summary of the Invention

[0004] Embodiments of this application provide a battery pin and a battery to address or at least partially address the shortcomings of the aforementioned background technology.

[0005] In a first aspect, embodiments of this application provide a battery module, comprising:

[0006] The housing includes a bottom plate and multiple side plates connected to each other, the bottom plate and the multiple side plates enclosing a receiving cavity having a first port;

[0007] A battery cell assembly is disposed within the receiving cavity, the battery cell assembly comprising a plurality of battery cells stacked along a first direction, the plurality of battery cells being disposed between two side plates;

[0008] A first monitoring component is directly connected to each of the battery cells, and the first monitoring component is used to monitor the first operating data of the battery cells.

[0009] A second monitoring component is disposed on one side of the cell assembly, and the second monitoring component is used to monitor the second operating data of the cell.

[0010] The first monitoring component includes a first transmission port, and the second monitoring component includes a second transmission port, with the first transmission port and the second transmission port being spaced apart.

[0011] In one embodiment, the first monitoring component includes:

[0012] Multiple connecting bars are disposed on the top of the cell assembly, with one connecting bar located between two adjacent cells, and one end of the connecting bar connected to one cell and the other end of the connecting bar connected to another cell.

[0013] A data acquisition harness is disposed on the top and / or side of the battery cell assembly, and at least a portion of the data acquisition harness is connected to each of the connection busbars.

[0014] A mounting plate is disposed on the top of the battery cell assembly. The mounting plate has multiple mounting slots, which are disposed on both sides of the data acquisition harness, and each mounting slot corresponds to one of the connection bars.

[0015] The connecting strip is disposed within the mounting slot.

[0016] In one embodiment, the first monitoring component includes a plurality of first sensors, the first sensors being used to acquire first operating data of the battery cell, one first sensor corresponding to one battery cell, and the first sensor being disposed on the top of the battery cell;

[0017] The first working data includes temperature data, and the acquisition harness includes multiple first acquisition lines. One end of each first acquisition line corresponds to and is connected to a first sensor, and the other end of each first acquisition line is connected to the first transmission port.

[0018] In one embodiment, the battery cell includes an explosion-proof valve located at the top of the battery cell;

[0019] The mounting plate is provided with multiple vent holes, and each vent hole corresponds to one explosion-proof valve.

[0020] The first sensor is positioned close to the explosion-proof valve.

[0021] In one embodiment, the acquisition harness includes multiple second acquisition lines, which are used to acquire first working data of the battery cell. The second acquisition lines are disposed on the top of the battery cell assembly, and one end of one second acquisition line corresponds to and is connected to one of the connection bars, while the other end of one second acquisition line is connected to the first transmission port; wherein, the first working data includes voltage data.

[0022] In one embodiment, the first monitoring component further includes a plurality of second sensors, the second sensors being used to acquire first operating data of the battery cell, two second sensors corresponding to one battery cell, and the second sensors being disposed on the side of the battery cell;

[0023] The acquisition harness includes multiple third acquisition lines, one end of which corresponds to and is connected to a second sensor, and the other end of which is connected to the first transmission port.

[0024] In one embodiment, the second monitoring component includes a first pad, a second pad, and a third sensor. The second pad is disposed on the side of the first pad near the side plate, and a receiving groove is formed on the side of the second pad near the side plate. The third sensor is used to acquire the second operating data of the battery cell.

[0025] The second working data includes expansion force data. The third sensor is installed in the receiving groove. One side of the third sensor abuts against the second pad, and the other side of the third sensor abuts against the side plate.

[0026] In one embodiment, the plurality of side plates include two first side plates and two second side plates. The two first side plates are arranged opposite to each other along the first direction, and the two second side plates are arranged opposite to each other along the second direction. The first side plates are provided with a plurality of first through holes, and the second side plates are provided with a plurality of second through holes. Each second through hole corresponds to and is connected to one of the first through holes.

[0027] The battery module further includes multiple first connectors, each first connector corresponding to a first through hole. One end of the first connector is fixedly connected to the first side plate, and the other end of the first connector passes through the first through hole and the second through hole and is fixedly connected to the second side plate.

[0028] In one embodiment, the battery module further includes a foam, one of which is disposed between two adjacent battery cells.

[0029] Secondly, embodiments of this application provide an electrical device including the battery module described in any of the above embodiments.

[0030] The beneficial effects of the embodiments of this application are as follows:

[0031] This application provides a battery pin and a battery module including a housing, a cell assembly, a first monitoring component, and a second monitoring component. The housing includes a connected base plate and multiple side plates, which together form a receiving cavity with a first port. The cell assembly is disposed within the receiving cavity and includes multiple cells stacked along a first direction, thereby simplifying the arrangement and layout of the cells. The first monitoring component is directly connected to each cell and is used to monitor the first operating data of the cell. The second monitoring component is disposed on one side of the cell assembly and is used to monitor the second operating data of the cell. The first monitoring component includes a first transmission port, and the second monitoring component includes a second transmission port. The first and second transmission ports are spaced apart. Through the collaborative work of the first and second monitoring components, the first and second operating data of each cell can be monitored in real time and accurately, reducing the design complexity of the monitoring components and achieving an efficient and low-cost testing method. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the description of the embodiment will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the battery module provided in an embodiment of this application;

[0034] Figure 2 An exploded view of the battery module provided for an embodiment of this application;

[0035] Figure 3 This is a schematic diagram of the assembly structure of the battery cell assembly, the first monitoring assembly, and the second monitoring assembly provided in the embodiments of this application;

[0036] Figure 4 This is a schematic diagram of the structure of the first monitoring component provided in the embodiments of this application;

[0037] Figure 5 This is a schematic diagram of the structure of the second monitoring component provided in an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1-Battery module;

[0040] 11-Box body; 111-Cover plate; 112-Bottom plate; 113-Side plate; 1121-Fourth through hole; 1131-First side plate; 1132-Second side plate; 11311-First through hole; 11321-Second through hole;

[0041] 12-Battery cell assembly; 121-Battery cell; 122-Explosion-proof valve; 123-End plate;

[0042] 13-First monitoring component; 131-First transmission port; 132-Connector bar; 133-Acquisition harness; 134-Mounting plate; 135-First sensor; 136-Second sensor; 1331-First acquisition line; 1332-Second acquisition line; 1333-Third acquisition line; 1341-Mounting slot; 1342-Exhaust port;

[0043] 14-Second monitoring component; 141-Second transmission port; 142-First pad; 143-Second pad; 144-Third sensor; 1431-Receiving slot;

[0044] 15-First connector; 16-Second connector; 17-Foam. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0046] Please combine Figure 1 and Figure 2 ;in, Figure 1 A schematic diagram of the battery module provided in an embodiment of this application; Figure 2 This is an exploded view of a battery module provided in an embodiment of this application.

[0047] In one embodiment, the battery module 1 includes a housing 11, a cell assembly 12, a first monitoring assembly 13, and a second monitoring assembly 14. The housing 11 includes a cover plate 111, a bottom plate 112, and a plurality of side plates 113 connected to each other. The bottom plate 112 and the plurality of side plates 113 enclose a receiving cavity with a first port. The cover plate 111 is disposed opposite to the bottom plate 112 and covers the first port. It should be noted that this embodiment uses the housing 11 including four side plates 113 as an example to illustrate the technical solution of this application.

[0048] The cell assembly 12 is disposed within the receiving cavity. The cell assembly 12 includes a plurality of cells 121 stacked along a first direction X, and the plurality of cells 121 are connected in series. It should be noted that this embodiment does not limit the number of cells 121 in a battery module 1. A battery module 1 may include two, three, four, five or more cells 121. However, in order to better illustrate the innovation of this embodiment, this embodiment takes five cells 121 stacked along the first direction X as an example to illustrate the technical solution of this application. The five cells 121 are connected in series to form a simple 1P5S battery module 1, thereby reducing the volume and structural complexity of the battery module 1, making the battery module 1 more compact, and facilitating individual monitoring of each cell 121.

[0049] The first monitoring component 13 is directly connected to each of the battery cells 121 and is used to monitor the first operating data of the battery cell 121. The second monitoring component 14 is disposed on one side of the battery cell assembly 12 and is used to monitor the second operating data of the battery cell 121. The first monitoring component 13 includes a first transmission port 131, and the second monitoring component 14 includes a second transmission port 141. The first transmission port 131 and the second transmission port 141 are spaced apart, thereby realizing independent monitoring of each battery cell 121. This overcomes the shortcomings of related technologies that can only monitor the entire module, avoids the abnormal state of a single battery cell 121 from being ignored, improves the accuracy of testing individual battery cells 121, and reduces the cumbersome monitoring component connection and adjustment steps in related technology testing.

[0050] It is understood that this embodiment integrates the first monitoring component 13 and the second monitoring component 14 into the battery module 1, thereby achieving comprehensive monitoring of the working status of the cell 121. It can collect and transmit the working status data of the individual cell 121 to the testing system in real time, and facilitate understanding of the performance testing status and fault diagnosis of the individual battery, thus meeting the technical requirements of modern energy storage systems for high efficiency, safety and intelligence.

[0051] Specifically, this embodiment achieves independent monitoring of each battery cell 121 by directly connecting the first monitoring component 13 to each battery cell 121, avoiding the neglect of abnormal states of individual battery cells 121, improving the accuracy of individual battery cell testing capabilities, and ensuring the accuracy of data from individual battery cells 121. By placing the second monitoring component 14 on one side of the battery cell assembly 12, the ability to evaluate the overall performance of the battery module 1 is guaranteed, thereby making the test data more targeted and complete, improving the flexibility of the testing system, and enabling it to quickly adapt to various testing scenarios, meeting the market's high-efficiency demand for rapidly iterating battery technology.

[0052] Please combine Figure 1 , Figure 2 and Figure 3 ;in, Figure 3 This is a schematic diagram of the assembly structure of the battery cell assembly, the first monitoring assembly, and the second monitoring assembly provided in the embodiments of this application.

[0053] In one embodiment, the first monitoring component 13 may be a Cell Connection System (CCS), which is mainly used for the electrical connection and management of the cells 121 in the battery module 1. The first monitoring component 13 includes multiple connection bars 132, a data acquisition harness 133, and a mounting plate 134. The multiple connection bars 132 are disposed on the top of the cell assembly 12, and one connection bar 132 is located between two adjacent cells 121. One end of the connection bar 132 is connected to one cell 121, and the other end of the connection bar 132 is connected to another cell 121. 21; The acquisition harness 133 is disposed on the top and / or side of the battery cell assembly 12, and at least a portion of the acquisition harness 133 is electrically connected to each of the connecting bars 132; The mounting plate 134 is disposed on the top of the battery cell assembly 12, and the mounting plate 134 has a plurality of mounting slots 1341, which are disposed on both sides of the acquisition harness 133, and one mounting slot 1341 corresponds to one connecting bar 132; wherein, the connecting bar 132 is disposed within the mounting slot 1341.

[0054] Specifically, the mounting plate 134 can be made of polycarbonate sheet (PC sheet). Polycarbonate sheet is lightweight and strong, providing sufficient support. At the same time, polycarbonate sheet is easy to process and can be quickly formed through simple cutting, drilling and other processes, reducing production and customization costs.

[0055] The connecting strip 132 is disposed on the top of the cell assembly 12, where the top refers to the side where the terminal post is located in the cell assembly 12. The connecting strip 132 connects to the positive or negative terminal of the cell 121. Each connecting strip 132 has one end connected to the positive terminal of a cell 121 and the other end connected to the negative terminal of an adjacent cell 121, thus forming a series circuit. It can be understood that the connecting strip 132 is fixed in the mounting groove 1341 on the mounting plate 134 to ensure its positional stability. At the same time, the design of the mounting groove 1341 not only reduces the risk of poor contact but also improves the vibration resistance of the system.

[0056] The acquisition harness 133 is disposed on the top and / or side of the cell assembly 12, and at least a portion of the acquisition harness 133 is electrically connected to each of the connection bars 132 to obtain the first working data of each cell 121; wherein, the first working data includes, but is not limited to, one or more of voltage, current, and temperature.

[0057] It is understood that, through centralized layout, at least some of the acquisition harnesses 133 are electrically connected to each of the connection bars 132 respectively, and the test data acquisition of the battery module is centralized to several interface points, thereby reducing the number of cables and ports that need to be connected independently, thus ensuring the stability of the data acquisition line, reducing the risk of electrical noise or signal interference, and improving the accuracy of the test.

[0058] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 4 ;in, Figure 4 This is a schematic diagram of the structure of the first monitoring component provided in an embodiment of this application.

[0059] In one embodiment, the first monitoring component 13 includes a plurality of first sensors 135, which are used to acquire first operating data of the battery cell 121. One first sensor 135 is configured to correspond to one battery cell 121, and the first sensor 135 is disposed on the top of the battery cell 121. The first operating data is temperature data. The acquisition harness 133 includes a plurality of first acquisition lines 1331. One end of one first acquisition line 1331 corresponds to and is connected to one first sensor 135, and the other end of one first acquisition line 1331 is connected to the first transmission port 131.

[0060] The first sensor 135 can be a temperature sensor. Each first sensor 135 is used to monitor the temperature data at the top of the battery cell 121 when it is working. Each first sensor 135 corresponds to one battery cell 121 and is installed on the top of the battery cell 121. It is connected to the first transmission port 131 through the first acquisition line 1331. The first data of multiple battery cells 121 are collected through a single first transmission port 131, thereby realizing the acquisition of temperature data of a single battery cell 121 when it is working. This ensures the accuracy and real-time performance of the acquired data, avoids signal interference caused by multiple sensor connections, and makes the first monitoring component 13 an integral part of the battery module 1, greatly simplifying the testing process. At the same time, it reduces the number of acquisition lines, avoids multiple acquisition lines from intertwining or being repeatedly arranged, makes the installation and removal of the first monitoring component 13 more convenient, and reduces unnecessary space occupation of the first monitoring component 13.

[0061] The first acquisition line 1331 is located on the top of the cell 121, which makes the arrangement of the first test component simpler, reduces the complexity of wiring, effectively avoids the complex electrical wiring requirements in the battery module 1 of related technologies, and simplifies the preparation work before testing.

[0062] It is understood that, in this embodiment, by centrally arranging the first sensor 135 and the first acquisition line 1331 on the top of the battery cell assembly 12, and by equipping each battery cell 121 with one first sensor 135, and by centrally arranging the first sensor 135 on the top of the battery cell 121, the problem of complex circuitry and uneven spatial distribution caused by dispersing sensors in different positions of the battery cell 121 in related technologies is avoided. At the same time, the first sensor 135 equipped in each battery cell 121 is directly set on the top of the battery cell 121 and centrally connected through the first acquisition line 1331, so that the assembly personnel can perform all necessary connection work in the same position, avoiding operation at multiple positions and multiple connection points, and reducing the complexity of assembly.

[0063] Specifically, one end of the first acquisition line 1331 corresponds to and is connected to a first sensor 135, and the other end of the first acquisition line 1331 is connected to the first transmission port 131, which can be connected to the battery management system (BMS).

[0064] It is understood that in this embodiment, the temperature data of the individual battery cell 121 is transmitted to the battery management system through the first transmission terminal by setting the first acquisition line 1331. The battery management system is used to collect, process, and analyze the data of the battery cell 121, and take protective measures as needed. By integrating the first working data from different battery cells 121, the battery management system can detect potential faults of the battery cell 121 and issue alarms in a timely manner or automatically adjust the working state of the battery cell 121.

[0065] Please continue to combine Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, the battery cell 121 includes an explosion-proof valve 122, which is located on the top of the battery cell 121; the mounting plate 134 has a plurality of vent holes 1342, and one vent hole 1342 corresponds to one explosion-proof valve 122; wherein, the first sensor 135 is located close to the explosion-proof valve 122.

[0066] Specifically, the explosion-proof valve 122 is arranged on the top of the battery cell 121 and connected to the external environment through the vent 1342. The position of the vent 1342 corresponds to the explosion-proof valve 122, thereby ensuring that the battery cell 121 can release pressure in time when abnormalities such as overpressure or overheating occur, thus ensuring the safety of the battery module 1. The first sensor 135 is set close to the explosion-proof valve 122, so that the first sensor 135 can acquire the temperature change data of the battery cell 121 more quickly and accurately, without the need for too many acquisition lines and complex arrangements, thereby simplifying the structure of the battery module 1.

[0067] The first sensor 135 can be set at the QR code position of the battery cell 121. The QR code of the battery cell 121 can be located on the top of the battery cell 121 and close to the explosion-proof valve 122. The QR code position of the battery cell 121 is usually located in a flat area on the surface of the battery cell 121, and this position is close to the core part or heat source area of ​​the battery cell 121. It is a temperature change sensitive point, which helps to collect more accurate temperature data.

[0068] It is understood that by placing the first sensor 135 at the QR code location of the battery cell 121, this embodiment can improve the stable installation and close contact of the first sensor 135 and reduce layout restrictions; at the same time, it does not hinder the normal operation of other components; at the same time, by integrating the first sensor 135, the vent 1342 and the explosion-proof valve 122 and other safety protection functions on the top of the battery cell 121, when the battery module 1 needs to switch between different application scenarios or battery types, the integrated design can adapt to various changes more quickly. That is, the design provided by this embodiment not only saves space in the battery module 1, but also improves the flexibility of the first monitoring component 13.

[0069] Please continue to combine Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, the acquisition harness 133 includes multiple second acquisition lines 1332. The second acquisition lines 1332 are used to acquire first working data of the battery cell 121. The second acquisition lines 1332 are disposed on the top of the battery cell assembly 12, and one end of one second acquisition line 1332 corresponds to and is connected to one of the connection bars 132, and the other end of one second acquisition line 1332 is connected to the first transmission port 131. The first transmission port 131 can be connected to the battery management system. The first working data includes voltage data.

[0070] It should be noted that in the relevant design, the voltage monitoring and temperature monitoring of the battery module 1 usually require separate systems and circuits for separate testing, which not only increases the complexity of wiring, but also increases the cost of testing equipment.

[0071] It is understood that this embodiment integrates multiple second acquisition lines 1332 on the top of the battery cell 121 through an integrated acquisition harness 133, which further simplifies the structure of the battery module 1. Specifically, by combining the voltage monitoring function with the temperature monitoring function, the addition of complex components or sensor modules is avoided, the compactness of the battery module 1 is maintained, the testing efficiency is improved, and the overall testing cost and complexity are reduced.

[0072] Meanwhile, by simultaneously monitoring the temperature and voltage data of the battery cell 121, the battery management system can promptly detect abnormalities in the individual battery cell 121 (such as overcharging, over-discharging, or excessive temperature) and respond quickly to take protective measures in a timely manner, thereby effectively preventing the battery cell 121 from overheating, short-circuiting, or other malfunctions, and improving the safety of the battery module 1.

[0073] Please continue to combine Figure 1, Figure 2 , Figure 3 and Figure 4 In one embodiment, the first monitoring component 13 further includes a plurality of second sensors 136, which are used to acquire first operating data of the battery cell 121. Two second sensors 136 are configured for one battery cell 121, and the second sensors 136 are disposed on the side of the battery cell 121. The acquisition harness 133 includes a plurality of third acquisition lines 1333. One end of one third acquisition line 1333 corresponds to and is connected to one of the second sensors 136, and the other end of one third acquisition line 1333 is connected to the first transmission port 131, which can be connected to the battery management system.

[0074] The second sensor 136 can also be a temperature sensor. Each second sensor 136 is used to monitor the temperature data on the side of the battery cell 121 when it is working. The side refers to the side of the battery cell 121 that is close to the side plate 113. Two second sensors 136 are set for one battery cell 121, and the second sensors 136 are set on the side of the battery cell 121. One second sensor 136 is set near the top of the battery cell 121, and the other second sensor 136 is set near the bottom of the battery cell 121, so that the battery cell 121 can be fully monitored by two second sensors 136.

[0075] It is understood that during the charging and discharging process, the temperature distribution at different locations of the battery cell 121 may vary significantly. The top of the battery cell 121 may be affected by hot airflow or heat dissipation, while the bottom of the battery cell 121 may accumulate more heat. By setting the second sensor 136 on the side near the top and bottom respectively, the temperature difference between the two ends of the battery cell 121 can be accurately reflected, improving the representativeness and accuracy of the data, helping the battery management system to perform more accurate state assessment, and avoiding the limitation of the battery module 1 in related technologies that only sets temperature sensors on the top of the battery cell 121 or at a single location.

[0076] Meanwhile, by aggregating the first data of multiple cells 121 through a single first transmission port 131, the number of acquisition lines is reduced, and multiple acquisition lines are avoided from intertwining or being repeatedly arranged, thereby reducing unnecessary space occupation of the first monitoring component 13.

[0077] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 5 ;in, Figure 5 This is a schematic diagram of the structure of the second monitoring component provided in an embodiment of this application.

[0078] In one embodiment, the second monitoring component 14 includes a first pad 142, a second pad 143, and a third sensor 144. The second pad 143 is disposed on the side of the first pad 142 near the side plate 113. A receiving groove 1431 is formed on the side of the second pad 143 near the side plate 113. The third sensor 144 is used to acquire second operating data of the battery cell 121. The second operating data includes expansion force data. The third sensor 144 is installed in the receiving groove 1431. One side of the third sensor 144 abuts against the second pad 143, and the other side of the third sensor 144 abuts against the side plate 113.

[0079] The first pad 142 and the second pad 143 can be an integrated design, and the third sensor 144 is embedded in the receiving groove 1431 of the second pad 143, so that the second monitoring component 14 can be seamlessly integrated into the battery module 1. Therefore, there is no need to install a separate pressure sensing device in the battery module 1, which makes the testing process of the battery module 1 simpler.

[0080] Specifically, the battery cell assembly 12 further includes two end plates 123, which are respectively disposed at both ends of the battery cell 121 module along the first direction X; wherein, one end plate 123 is disposed between the battery cell 121 module and a side plate 113, and the material of the end plate 123 can be set according to actual conditions; for example, in some embodiments, the end plate 123 can be a plastic part, which can insulate the battery cell 121 module to avoid the risk of leakage, and is inexpensive, which helps to reduce production costs; in some embodiments, the end plate 123 can be a metal part, which has better structural strength.

[0081] The second detection component is disposed between one end plate 123 and one side plate 113. One end of the second detection component abuts against the side plate 113, and the other end of the second detection component abuts against one end of the end plate 123. The other end of the end plate 123 abuts against the battery module 1. The second detection component can be disposed on one side of the total positive terminal or the total negative terminal of the cell 121 module. This embodiment illustrates the technical solution of this application by taking the example that the second detection component can be disposed on one side of the total negative terminal of the cell 121 module.

[0082] Understandably, the negative terminal is a critical location for stress concentration and current convergence in the cell 121 module. Placing the second detection component here can effectively monitor the overall expansion force of multiple cells 121 stacked together. This centralized monitoring method can more intuitively reflect the overall working status of each cell 121 in the battery module 1, further improving the accuracy of the monitoring data. At the same time, since the second detection component is placed at the negative terminal, it is not necessary to place pressure sensors on each cell 121 individually, reducing the number and arrangement complexity of the second sensors 136, thereby simplifying the design and installation process of the second detection component and reducing the amount of preparation work before testing.

[0083] Furthermore, when the battery cell 121 expands, it expands along the two main surfaces in the first direction X, causing compression on the connected battery cells 121. In this embodiment, the second detection component is set between one of the end plates 123 and one of the side plates 113. The second detection component includes the third sensor 144, which can be a pressure sensor, thereby enabling real-time acquisition of the expansion force data of the battery cell 121 module during operation. The second detection component is also set on the top of the battery cell 121 module. The temperature data and voltage data of each battery cell 121 are obtained through the second detection component, further improving the detection efficiency and accuracy of the battery module 1, and ensuring the quality and safety reliability of the battery module 1.

[0084] Please continue to combine Figure 1 , Figure 2 , Figure 3 and Figure 5 In one embodiment, the second transmission port 141 is disposed on the side of the second pad 143 near the cover plate 111. One end of the second transmission port 141 is connected to the pressure sensor, and the other end of the second transmission port 141 can transmit the measured expansion force data to the test cabinet or data logger through a bus (such as CAN bus, Modbus or other industrial bus) or acquisition line, thereby displaying the expansion force value of the cell 121 module.

[0085] Please continue to combine Figures 1 to 5 In one embodiment, the plurality of side plates 113 include two first side plates 1131 and two second side plates 1132. The two first side plates 1131 are arranged opposite each other along the first direction X, and the two second side plates 1132 are arranged opposite each other along the second direction Y. The first direction X and the second direction Y form a preset angle. It should be noted that in this embodiment, the first direction is taken as... Figure 2 The X direction in the middle, the second direction is Figure 2The technical solution of this application is illustrated by taking the Y-direction in the example where the preset included angle is 90 degrees.

[0086] The first side plate 113 has multiple first through holes 11311, and the second side plate 1132 has multiple second through holes 11321. Each second through hole 11321 corresponds to and is connected to one first through hole 11311. The battery module 1 also includes multiple first connectors 15, each first connector 15 corresponding to one first through hole 11311. One end of each first connector 15 is fixedly connected to the first side plate 1131, and the other end of each first connector 15 passes through the first through hole 11311 and the second through hole 11321 and is fixedly connected to the second side plate 1132. This multi-point fixing method strengthens the connection between the side plates 113 and improves the mechanical stability of the entire housing 11.

[0087] It is understood that in this embodiment, by aligning and connecting the first through hole 11311 and the second through hole 11321, one end of the first connector 15 is fixedly connected to the first side plate 1131, and the other end of the first connector 15 passes through the first through hole 11311 and the second through hole 11321 and is fixedly connected to the second side plate 1132. This ensures that the first connector 15 forms a tight mechanical connection between the first side plate 1131 and the second side plate 1132, thereby reducing possible gaps or loosening between the side plate 113 and the second monitoring component 14, and thus preventing external environment (such as dust or moisture) from entering the battery module 1, thereby improving the overall sealing performance.

[0088] Furthermore, the second side plate 1132 has multiple third through holes (not shown in the figure) on the side near the bottom plate 112, and the bottom plate 112 has multiple fourth through holes 1121. Each third through hole corresponds to and is connected to a fourth through hole 1121. The battery module 1 also includes multiple second connectors 16, each second connector 16 corresponds to a fourth through hole 1121. One end of the second connector 16 is fixedly connected to the bottom plate 112, and the other end of the second connector 16 passes through the fourth through hole 1121 and the third through hole, and is fixedly connected to the second side plate 1132. This multi-point fixing method strengthens the connection between the side plate 113 and the bottom plate 112, further improving the mechanical stability of the entire housing 11.

[0089] It should be noted that this embodiment does not impose specific limitations on the number of the first through hole 11311, the second through hole 11321, the third through hole, the fourth through hole 1121, the first connector 15, and the second connector 16; wherein the first connector 15 and the second connector 16 are including but not limited to bolts, and the first through hole, the second through hole, the third through hole, and the fourth through hole can all be bolt holes.

[0090] Please continue to combine Figures 1 to 5 In one embodiment, the battery module 1 further includes a foam 17, one foam 17 being disposed between two adjacent battery cells 121, and another foam 17 being disposed between the battery cell 121 and the end plate 123.

[0091] The foam 17 can be a cushioning material and is placed between two adjacent battery cells 121, thereby effectively absorbing the mechanical stress generated between the battery cells 121 due to vibration or impact. Especially under vehicle operating conditions (such as bumps, acceleration and deceleration), the foam 17 can prevent wear or damage caused by direct contact between the battery cells 121.

[0092] Meanwhile, the foam 17 is disposed between the battery cell 121 and the end plate 123. The design of the foam 17 between the battery cell 121 and the end plate 123 can provide additional support for the battery cell 121 module, reduce the displacement or shaking of the battery cell 121 module in the housing 11, and maintain the structural stability of the battery cell 121 module.

[0093] Furthermore, the foam 17 can also be made of a material with good thermal conductivity, which can reduce mechanical stress and assist in heat conduction, helping to achieve a uniform heat distribution between adjacent cells 121, avoiding local overheating problems, thereby improving the thermal management efficiency of the battery module 1, extending the life of the cells 121, and ensuring the safety of the battery module 1.

[0094] This embodiment also provides an electrical device, which includes the battery module 1 described in any of the above embodiments.

[0095] It is understood that the battery module 1 has been described in detail in the above embodiments, and will not be repeated here.

[0096] The electrical equipment includes a battery module 1, which serves as the power supply for the electrical equipment. Therefore, the electrical equipment also possesses the advantages of the battery module 1, thereby helping to simplify the overall structure of the electrical equipment. The electrical equipment can be a car, an aircraft, a mechanical production equipment, etc.

[0097] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery module, characterized in that, include: The housing includes a bottom plate and multiple side plates connected to each other, the bottom plate and the multiple side plates enclosing a receiving cavity having a first port; A battery cell assembly is disposed within the receiving cavity, the battery cell assembly comprising a plurality of battery cells stacked along a first direction, the plurality of battery cells being disposed between two side plates; A first monitoring component is directly connected to each of the battery cells, and the first monitoring component is used to monitor the first operating data of the battery cells. A second monitoring component is disposed on one side of the battery cell assembly. The second monitoring component includes a first pad, a second pad, and a third sensor. The second pad is disposed on the side of the first pad near the side plate. A receiving groove is formed on the side of the second pad near the side plate. The third sensor is installed in the receiving groove. The third sensor is a pressure sensor. One side of the third sensor abuts against the second pad, and the other side of the third sensor abuts against the side plate. The third sensor is used to monitor the second operating data of the battery cell. The first monitoring component includes a first transmission port, and the second monitoring component includes a second transmission port, with the first transmission port and the second transmission port being spaced apart.

2. The battery module according to claim 1, characterized in that, The first monitoring component includes: Multiple connecting bars are disposed on the top of the cell assembly, with one connecting bar located between two adjacent cells, and one end of the connecting bar connected to one cell and the other end of the connecting bar connected to another cell. A data acquisition harness is disposed on the top and / or side of the battery cell assembly, and at least a portion of the data acquisition harness is connected to each of the connection busbars. A mounting plate is disposed on the top of the battery cell assembly. The mounting plate has multiple mounting slots, which are disposed on both sides of the data acquisition harness, and each mounting slot corresponds to one of the connection bars. The connecting strip is disposed within the mounting slot.

3. The battery module according to claim 2, characterized in that, The first monitoring component includes a plurality of first sensors, which are used to acquire first operating data of the battery cell. One first sensor corresponds to one battery cell and is disposed on the top of the battery cell. The first working data includes temperature data, and the acquisition harness includes multiple first acquisition lines. One end of each first acquisition line corresponds to and is connected to a first sensor, and the other end of each first acquisition line is connected to the first transmission port.

4. The battery module according to claim 3, characterized in that, The battery cell includes an explosion-proof valve, which is located at the top of the battery cell; The mounting plate is provided with multiple vent holes, and each vent hole corresponds to one explosion-proof valve. The first sensor is positioned close to the explosion-proof valve.

5. The battery module according to claim 3, characterized in that, The acquisition harness includes multiple second acquisition lines, which are used to acquire the first working data of the battery cell. The second acquisition lines are disposed on the top of the battery cell assembly, and one end of one second acquisition line corresponds to and is connected to one of the connection bars, while the other end of one second acquisition line is connected to the first transmission port; wherein, the first working data includes voltage data.

6. The battery module according to claim 3, characterized in that, The first monitoring component further includes a plurality of second sensors, which are used to acquire first operating data of the battery cell. Two second sensors are configured for one battery cell, and the second sensors are configured on the side of the battery cell. The acquisition harness includes multiple third acquisition lines, one end of which corresponds to and is connected to a second sensor, and the other end of which is connected to the first transmission port.

7. The battery module according to any one of claims 1 to 6, characterized in that, The second set of working data includes expansion force data.

8. The battery module according to any one of claims 1 to 6, characterized in that, The plurality of side plates include two first side plates and two second side plates. The two first side plates are arranged opposite to each other along the first direction, and the two second side plates are arranged opposite to each other along the second direction. The first side plates are provided with a plurality of first through holes, and the second side plates are provided with a plurality of second through holes. Each second through hole corresponds to and is connected to one first through hole. The battery module further includes multiple first connectors, each first connector corresponding to a first through hole. One end of the first connector is fixedly connected to the first side plate, and the other end of the first connector passes through the first through hole and the second through hole and is fixedly connected to the second side plate.

9. The battery module according to any one of claims 1 to 6, characterized in that, The battery module also includes multiple foams, with one foam disposed between two adjacent battery cells.

10. An electrical appliance, characterized in that, Includes the battery module as described in any one of claims 1 to 9.

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