Battery module and electric equipment

Abstract

The invention provides a battery module and electric equipment, the battery module comprises a box body, a battery cell assembly, a first monitoring assembly and a second monitoring assembly, the box body comprises a bottom plate and a plurality of side plates which are connected, and the bottom plate and the plurality of side plates enclose to form an accommodating cavity with a first port; the battery cell assembly is arranged in the accommodating cavity, and the battery cell assembly comprises a plurality of battery cells which are stacked in the first direction; the first monitoring assembly is directly connected with each battery cell, and the first monitoring assembly is used for monitoring first working data of the battery cells; the second monitoring assembly is arranged on one side of the battery cell assembly, and the second monitoring assembly is used for monitoring second working data of the battery cell; wherein the first monitoring assembly comprises a first transmission port, the second monitoring assembly comprises a second transmission port, the first transmission port and the second transmission port are arranged at an interval, through cooperative work of the first monitoring assembly and the second monitoring assembly, the working state of each battery cell can be accurately monitored in real time, and the design complexity of the monitoring assemblies is reduced.

Description

Technical Field

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

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

[0003] During the testing phase of lithium batteries, battery modules in related technologies are often unable to meet the needs of rapidly developing battery technology for efficient and flexible testing methods due to their size and structural limitations, cumbersome testing processes, high testing costs, and insufficient flexibility in testing solutions. Summary of the invention

[0004] The embodiments of the present application provide a battery pin and a battery, which are used to solve or at least partially solve the deficiencies of the above-mentioned background technology.

[0005] In a first aspect, an embodiment of the present application provides a battery module, comprising:

[0006] The box body comprises a bottom plate and a plurality of side plates connected to each other, wherein the bottom plate and the plurality of side plates enclose a receiving cavity having a first port;

[0007] A battery cell assembly is arranged in the accommodating cavity, wherein the battery cell assembly comprises a plurality of battery cells stacked along a first direction, and the plurality of battery cells are arranged between the two side plates;

[0008] A first monitoring component, directly connected to each of the battery cells, the first monitoring component being used to monitor first working data of the battery cells;

[0009] A second monitoring component is disposed on one side of the battery cell component, and the second monitoring component is used to monitor second working data of the battery cell;

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

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

[0012] A plurality of connection rows are arranged on the top of the battery cell assembly, wherein one of the connection rows is located between two adjacent battery cells, and one end of the connection row is connected to one of the battery cells, and the other end of the connection row is connected to another of the battery cells;

[0013] A collection harness is arranged on the top and / or side of the battery cell assembly, and at least part of the collection harness is electrically connected to each of the connection bars;

[0014] A mounting plate is arranged on the top of the battery cell assembly, and the mounting plate is provided with a plurality of mounting slots, and the plurality of mounting slots are arranged on both sides of the collection harness, and one mounting slot corresponds to one connection row;

[0015] Wherein, the connecting row is arranged in the installation groove.

[0016] In one embodiment, the first monitoring component includes a plurality of first sensors, the first sensors are used to obtain the first working data of the battery cell, one first sensor is arranged corresponding to one battery cell, and the first sensor is arranged on the top of the battery cell;

[0017] The first working data includes temperature data, the acquisition wiring harness includes a plurality of first acquisition wires, one end of one of the first acquisition wires corresponds to and is connected to one of the first sensors, and the other end of one of the first acquisition wires is connected to the first transmission port.

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

[0019] The mounting plate is provided with a plurality of exhaust holes, and one exhaust hole corresponds to one explosion-proof valve;

[0020] Wherein, the first sensor is arranged close to the explosion-proof valve.

[0021] In one embodiment, the acquisition harness includes a plurality of second acquisition lines, the second acquisition lines are used to obtain the first working data of the battery cell, the second acquisition lines are arranged on the top of the battery cell assembly, and one end of one of the second acquisition lines corresponds to and is connected to one of the connecting bars, and the other end of one of the second acquisition lines 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 are used to obtain the first working data of the battery cell, two second sensors are provided corresponding to one battery cell, and the second sensors are provided on the side of the battery cell;

[0023] The acquisition line bundle includes a plurality of third acquisition lines, one end of one of the third acquisition lines corresponds to and is connected to one of the second sensors, and the other end of one of the third acquisition lines is connected to the first transmission port.

[0024] In one embodiment, the second monitoring component includes a first cushion layer, a second cushion layer and a third sensor, the second cushion layer is arranged on a side of the first cushion layer close to the side plate, a receiving groove is provided on a side of the second cushion layer close to the side plate, and the third sensor is used to obtain the second working 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 cushion layer, 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, 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, the second side plates are provided with a plurality of second through holes, and one second through hole is provided corresponding to one first through hole and is connected;

[0027] Wherein, the battery module also includes multiple first connecting members, one first connecting member is arranged corresponding to one first through hole, one end of the first connecting member is fixedly connected to the first side plate, and the other end of the first connecting member 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, and one of the foams is disposed between two adjacent battery cells.

[0029] In a second aspect, an embodiment of the present application provides an electrical device, comprising a battery module as described in any one of the above embodiments.

[0030] Beneficial effects of the embodiments of the present application:

[0031] An embodiment of the present application provides a battery pin and a battery, the battery module comprising a box body, a battery cell assembly, a first monitoring assembly and a second monitoring assembly, the box body comprising a bottom plate and a plurality of side plates connected to each other, the bottom plate and the plurality of side plates enclosing a receiving cavity having a first port; the battery cell assembly is arranged in the receiving cavity, the battery cell assembly comprises a plurality of battery cells stacked along a first direction, thereby simplifying the arrangement and layout of the battery cells; the first monitoring assembly is directly connected to each battery cell, the first monitoring assembly is used to monitor the first working data of the battery cell; the second monitoring assembly is arranged on one side of the battery cell assembly, the second monitoring assembly is used to monitor the second working data of the battery cell; wherein the first monitoring assembly comprises a first transmission port, the second monitoring assembly comprises a second transmission port, the first transmission port and the second transmission port are arranged at intervals, and through the coordinated work of the first monitoring assembly and the second monitoring assembly, the first working data and the second working data of each battery cell can be monitored in real time and accurately, reducing the design complexity of the monitoring assembly and realizing an efficient and low-cost testing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution in this embodiment, the drawings required for use in the description of the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

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

[0034] Figure 2 An exploded schematic diagram of a battery module provided in an embodiment of the present application;

[0035] Figure 3 A schematic diagram of the assembly structure of the battery cell assembly, the first monitoring assembly and the second monitoring assembly provided in an embodiment of the present application;

[0036] Figure 4 A schematic diagram of the structure of the first monitoring component provided in an embodiment of the present application;

[0037] Figure 5 A schematic diagram of the structure of the second monitoring component provided in an embodiment of the present application.

[0038] Description of reference numerals:

[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 core assembly; 121-battery core; 122-explosion-proof valve; 123-end plate;

[0042] 13-first monitoring component; 131-first transmission port; 132-connection row; 133-collection harness; 134-mounting plate; 135-first sensor; 136-second sensor; 1331-first collection line; 1332-second collection line; 1333-third collection line; 1341-mounting slot; 1342-exhaust hole;

[0043] 14-second monitoring component; 141-second transmission port; 142-first cushion layer; 143-second cushion layer; 144-third sensor; 1431-accommodating slot;

[0044] 15-first connecting piece; 16-second connecting piece; 17-foam. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words such as "upper" and "lower" used generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0046] Please combine Figure 1 and Figure 2 ;in, Figure 1 A schematic diagram of the structure of a battery module provided in an embodiment of the present application; Figure 2 An exploded schematic diagram of a battery module provided in an embodiment of the present application.

[0047] In one embodiment, the battery module 1 includes a case 11, a battery cell assembly 12, a first monitoring assembly 13 and a second monitoring assembly 14; the case 11 includes a cover plate 111, a bottom plate 112 and multiple side plates 113 connected to each other, the bottom plate 112 and the multiple side plates 113 enclose a accommodating cavity having a first port, the cover plate 111 is arranged opposite to the bottom plate 112, and the cover plate 111 covers the first port; it should be noted that this embodiment takes the case 11 including four side plates 113 as an example to illustrate the technical solution of the present application.

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

[0049] The first monitoring component 13 is directly connected to each of the battery cells 121, and the first monitoring component 13 is used to monitor the first working data of the battery cells 121; the second monitoring component 14 is arranged on one side of the battery cell component 12, and the second monitoring component 14 is used to monitor the second working data of the battery cells 121; wherein, the first monitoring component 13 includes a first transmission port 131, and the second monitoring component 14 includes a second transmission port 141, and the first transmission port 131 and the second transmission port 141 are arranged at intervals, thereby realizing independent monitoring of each of the battery cells 121, making up for the deficiency of the related technology that only the overall module can be monitored, avoiding the abnormal state of the single battery cell 121 from being ignored, improving the accurate testing capability of the single battery cell 121, and reducing the cumbersome monitoring component connection and adjustment steps in the related technology test.

[0050] It can be understood that this embodiment integrates the first monitoring component 13 and the second monitoring component 14 in the battery module 1, thereby realizing comprehensive monitoring of the working status of the battery cell 121, and can collect and transmit the working status data of the single battery cell 121 to the test system in real time, and facilitates understanding of the performance test status and troubleshooting of the single battery, thereby meeting the technical requirements of modern energy storage systems for efficiency, safety and intelligence.

[0051] Specifically, this embodiment realizes independent monitoring of each battery cell 121 by setting the first monitoring component 13 to be directly connected to each of the battery cells 121, avoids the abnormal state of the single battery cell 121 from being ignored, improves the ability of the single battery cell 121 to accurately test the battery, and ensures the accuracy of the data of the single battery cell 121; by setting the second monitoring component 14 on one side of the battery cell component 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 test system, and being able to quickly adapt to a variety of test scenarios to meet the market's efficient demand for fast iteration battery technology.

[0052] Please combine Figure 1 , Figure 2 and Figure 3 ;in, Figure 3 A schematic diagram of the assembly structure of the battery cell assembly, the first monitoring assembly and the second monitoring assembly provided in an embodiment of the present application.

[0053] In one embodiment, the first monitoring component 13 may be a battery monitoring component (Cell Connection System, CCS), which is mainly used for electrical connection and management of the battery cell 121 in the battery module 1. The first monitoring component 13 includes a plurality of connection bars 132, a collection harness 133, and a mounting plate 134. The plurality of connection bars 132 are arranged on the top of the battery cell assembly 12, one of the connection bars 132 is located between two adjacent battery cells 121, and one end of the connection bar 132 is connected to one of the battery cells 121, and the other end of the connection bar 132 is connected to another of the battery cells 121. 21; the collection harness 133 is arranged on the top and / or side of the battery cell assembly 12, and at least part of the collection harness 133 is electrically connected to each of the connection bars 132; the mounting plate 134 is arranged on the top of the battery cell assembly 12, and the mounting plate 134 is provided with a plurality of mounting grooves 1341, and the plurality of mounting grooves 1341 are arranged on both sides of the collection harness 133, and one mounting groove 1341 is arranged corresponding to one of the connection bars 132; wherein the connection bar 132 is arranged in the mounting groove 1341.

[0054] Specifically, the mounting plate 134 can be made of a polycarbonate sheet (PC sheet). The polycarbonate sheet as the material of the mounting plate 134 is light and has high strength, and can provide sufficient supporting force. At the same time, the polycarbonate sheet material is easy to process and can be quickly formed through simple cutting, drilling and other processes, reducing production and customization costs.

[0055] The connecting row 132 is arranged at the top of the battery cell assembly 12, and the top refers to the side where the pole is located in the battery cell assembly 12, and the connecting row 132 is connected to the positive terminal or the negative terminal of the battery cell 121; wherein, one end of each of the connecting rows 132 is connected to the positive pole of one of the battery cells 121, and the other end of the connecting row 132 is connected to the negative pole of the adjacent battery cell 121, thereby forming a series circuit; it can be understood that the connecting row 132 is fixed in the mounting groove 1341 on the mounting plate 134, so as to ensure its stable position. At the same time, the design of the mounting groove 1341 can not only reduce the risk of poor contact, but also improve the vibration resistance of the system.

[0056] The collection harness 133 is arranged on the top and / or side of the battery cell assembly 12, and at least part of the collection harness 133 is electrically connected to each of the connecting rows 132, so as to obtain the first working data of each of the battery cells 121; wherein the first working data includes but is not limited to one or more of voltage, current, and temperature.

[0057] It can be understood that, in this embodiment, at least part of the acquisition harness 133 is electrically connected to each of the connection rows 132 through a centralized layout, and the test data acquisition of the battery module is concentrated to several interface points, thereby reducing the number of cables and ports that need to be independently connected, thereby 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 A schematic diagram of the structure of the first monitoring component provided in an embodiment of the present application.

[0059] In one embodiment, the first monitoring component 13 includes a plurality of first sensors 135, the first sensors 135 are used to obtain the first working data of the battery cell 121, one first sensor 135 is provided corresponding to one battery cell 121, and the first sensor 135 is provided on the top of the battery cell 121; wherein, the first working data is temperature data, and the acquisition harness 133 includes a plurality of first acquisition lines 1331, one end of one of the first acquisition lines 1331 corresponds to and is connected to one of the first sensors 135, and the other end of one of the first acquisition lines 1331 is connected to the first transmission port 131.

[0060] The first sensor 135 can be a temperature sensor, and each of the first sensors 135 is used to monitor the temperature data of the top of the battery cell 121 when it is working. Each of the first sensors 135 corresponds to a battery cell 121 and is installed on the top of the battery cell 121, and is connected to the first transmission port 131 through the first acquisition line 1331. The first data of multiple battery cells 121 are aggregated through a single first transmission port 131, thereby realizing the collection of temperature data of the single battery cell 121 when it is working, ensuring the accuracy and real-time nature of the collected data, avoiding signal interference caused by multi-sensor connection, making the first monitoring component 13 a part of the battery module 1, and greatly simplifying the testing process; at the same time, the number of acquisition lines is reduced, avoiding the interweaving or repeated arrangement of multiple acquisition lines, making the installation and disassembly of the first monitoring component 13 more convenient, and reducing unnecessary space occupation of the first monitoring component 13.

[0061] The first acquisition line 1331 is arranged on the top of the battery cell 121, which can make the layout of the first test component more concise, reduce the complexity of wiring, effectively avoid the complex electrical wiring requirements in the battery module 1 of the related art, and simplify the preparation work before testing.

[0062] It can be understood that, in this embodiment, the first sensor 135 and the first acquisition line 1331 are centrally arranged on the top of the battery cell assembly 12, each battery cell 121 is equipped with a first sensor 135, and the first sensor 135 is centrally arranged on the top of the battery cell 121, thereby avoiding the problem of dispersing sensors at different positions of the battery cell 121 in the related art, resulting in complex circuits and uneven spatial distribution; 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 is centrally connected through the first acquisition line 1331, so that the assembler can perform all necessary connection work at the same position, avoiding operations 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 one of the first sensors 135 , and the other end of the first acquisition line 1331 is connected to the first transmission port 131 , and the first transmission port 131 can be connected to a battery management system (BMS).

[0064] It can be understood that, in this embodiment, the temperature data of the single battery cell 121 is transmitted to the battery management system through the first transmission end 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. The battery management system integrates the first working data from different battery cells 121, thereby being able to detect potential faults of the battery cell 121 and promptly issue an alarm or automatically adjust the working status 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, and the explosion-proof valve 122 is located at the top of the battery cell 121; the mounting plate 134 is provided with a plurality of exhaust holes 1342, and one exhaust hole 1342 corresponds to one explosion-proof valve 122; wherein the first sensor 135 is arranged 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 is connected to the external environment through the exhaust hole 1342. The position of the exhaust hole 1342 corresponds to the explosion-proof valve 122, thereby ensuring that the battery cell 121 can release pressure in time when abnormalities such as overvoltage and overheating occur, thereby ensuring the safety of the battery module 1; wherein, the first sensor 135 is arranged close to the explosion-proof valve 122, so that the first sensor 135 can obtain 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 at the top of the battery cell 121 and is set close to the explosion-proof valve 122; wherein, the QR code position of the battery cell 121 is usually located in the flat surface area of ​​the battery cell 121, and this position is close to the core part or heat source area of ​​the battery cell 121, which is a sensitive point for temperature changes and helps to collect more real temperature data.

[0068] It can be understood that this embodiment sets the first sensor 135 at the QR code position of the battery cell 121, thereby improving the stable installation and close contact of the first sensor 135 and reducing layout restrictions; at the same time, it does not hinder the normal operation of other components; at the same time, by integrating safety protection functions such as the first sensor 135, the exhaust hole 1342 and the explosion-proof valve 122 on the top of the battery cell 121, when the battery module 1 needs to be switched between different application scenarios or battery types, the integrated design can adapt to various changes more quickly, that is, the design provided in this embodiment not only saves space for 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 a plurality of second acquisition lines 1332, the second acquisition lines 1332 are used to obtain the first working data of the battery cell 121, the second acquisition lines 1332 are arranged on the top of the battery cell assembly 12, and one end of one of the second acquisition lines 1332 corresponds to and is connected to one of the connecting rows 132, and the other end of one of the second acquisition lines 1332 is connected to the first transmission port 131, and the first transmission port 131 can be connected to a battery management system; wherein, the first working data includes voltage data.

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

[0071] It can be understood that this embodiment integrates multiple second acquisition lines 1332 on the top of the battery cell 121 by means of an integrated acquisition harness 133, thereby further simplifying the structure of the battery module 1; specifically, by combining the voltage monitoring function with the temperature monitoring function, the additional complex components or sensor modules are avoided, the compactness of the battery module 1 is maintained, the test efficiency is improved, and the cost and complexity of the overall test are reduced.

[0072] At the same time, by simultaneously monitoring the temperature data and voltage data of the battery cell 121, the battery management system can promptly detect abnormal conditions of the single battery cell 121 (such as overcharging, overdischarging, overtemperature, etc.), and respond quickly and take protective measures in time, thereby effectively preventing the battery cell 121 from overheating, short circuiting or other failures, thereby 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, the second sensors 136 are used to obtain the first working data of the battery cell 121, two second sensors 136 are provided corresponding to one battery cell 121, and the second sensors 136 are provided on the side of the battery cell 121; wherein the acquisition wiring harness 133 includes a plurality of third acquisition lines 1333, one end of the third acquisition line 1333 corresponds to and is connected to one of the second sensors 136, and the other end of the third acquisition line 1333 is connected to the first transmission port 131, and the first transmission port 131 can be connected to the battery management system.

[0074] The second sensor 136 may also be a temperature sensor, and each of the second sensors 136 is used to monitor the temperature data of the side of the battery cell 121 when it is working, and the side refers to the side of the battery cell 121 close to the side plate 113. Two second sensors 136 are provided corresponding to one battery cell 121, and the second sensors 136 are provided on the side of the battery cell 121; wherein, one second sensor 136 is provided close to the top of the battery cell 121, and the other second sensor 136 is provided close to the bottom of the battery cell 121, thereby realizing comprehensive temperature monitoring of the battery cell 121 through the two second sensors 136.

[0075] It is understandable that during the charging and discharging process of the battery cell 121, the temperature distribution at different positions may be significantly different. The top of the battery cell 121 may be affected by hot air flow or heat dissipation, while the bottom of the battery cell 121 may accumulate more heat. By respectively setting the second sensor 136 on the side near the top and the bottom, the temperature difference at both ends of the battery cell 121 can be accurately reflected, thereby improving the representativeness and accuracy of the data, helping the battery management system to perform more accurate status assessment, and avoiding the limitation of the battery module 1 in the related art that the temperature sensor is only set at the top of the battery cell 121 or at a single position.

[0076] At the same time, the first data of multiple battery cells 121 are aggregated through a single first transmission port 131, thereby reducing the number of acquisition lines, avoiding the interweaving or repeated arrangement of multiple acquisition lines, and further 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 A schematic diagram of the structure of the second monitoring component provided in an embodiment of the present application.

[0078] In one embodiment, the second monitoring component 14 includes a first cushion layer 142, a second cushion layer 143 and a third sensor 144, the second cushion layer 143 is arranged on a side of the first cushion layer 142 close to the side plate 113, a receiving groove 1431 is provided on a side of the second cushion layer 143 close to the side plate 113, and the third sensor 144 is used to obtain second working data of the battery cell 121; wherein, the second working data includes expansion force data, the third sensor 144 is installed in the receiving groove 1431, one side of the third sensor 144 is abutted against the second cushion layer 143, and the other side of the third sensor 144 is abutted against the side plate 113.

[0079] The first cushion layer 142 and the second cushion layer 143 can be of integrated design, and the third sensor 144 is embedded in the receiving groove 1431 of the second cushion layer 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, thereby making the testing process of the battery module 1 simpler.

[0080] Specifically, the battery cell assembly 12 also includes two end plates 123, and the two end plates 123 are respectively arranged at the two ends of the battery cell 121 module along the first direction X; wherein, one of the end plates 123 is arranged between the battery cell 121 module and one of the side plates 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 be insulated from the battery cell 121 module to avoid the risk of leakage, and is inexpensive, which is conducive to reducing production costs; in some embodiments, the end plate 123 can be a metal part, and the metal part has good structural strength.

[0081] The second detection component is arranged between one of the end plates 123 and one of the side plates 113, one end of the second detection component abuts against the side plate 113, the other end of the second detection component abuts against one end of the end plate 123, and the other end of the end plate 123 abuts against the battery module 1; wherein, the second detection component can be arranged on one side of the total positive terminal or the total negative terminal of the battery cell 121 module. This embodiment takes the example that the second detection component can be arranged on one side of the total negative terminal of the battery cell 121 module to illustrate the technical solution of the present application.

[0082] It can be understood that the total negative terminal is an important position for stress concentration and current convergence in the battery cell 121 module. By arranging the second detection component here, the overall expansion force of multiple battery cells 121 after being superimposed can be effectively monitored. This centralized monitoring method can more intuitively reflect the overall working status of each battery cell 121 in the battery module 1, and further improve the accuracy of the monitoring data; at the same time, the second detection component is arranged at the total negative terminal, so there is no need to arrange pressure sensors for each battery cell 121 one by one, reducing the number and layout complexity of the second sensor 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 of the first direction X, thereby squeezing the connected battery cells 121. In this embodiment, the second detection component is arranged between one of the end plates 123 and one of the side plates 113. The second detection component includes the third sensor 144. The third sensor 144 can be a pressure sensor, so that the expansion force data of the battery cell 121 module when working can be collected in real time. The second detection component is arranged on the top of the battery cell 121 module, and the temperature data and voltage data of each of the battery cells 121 are obtained through the second detection component, thereby further improving the detection efficiency and detection 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 arranged on a side of the second cushion layer 143 close to the cover plate 111, and 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 a test cabinet or a data recorder through a bus (such as a CAN bus, Modbus or other industrial bus) or an acquisition line, thereby displaying the expansion force value of the battery cell 121 module.

[0085] Please continue to combine Figures 1 to 5 In one embodiment, the plurality of side panels 113 include two first side panels 1131 and two second side panels 1132, the two first side panels 1131 are arranged relatively along the first direction X, and the two second side panels 1132 are arranged relatively along the second direction Y, and 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 second direction is Figure 2Taking the Y direction in the figure, the preset angle is 90 degrees as an example to illustrate the technical solution of the present application.

[0086] Among them, the first side panel 113 is provided with a plurality of first through holes 11311, and the second side panel 1132 is provided with a plurality of second through holes 11321, and one second through hole 11321 is arranged corresponding to and connected to one first through hole 11311; wherein the battery module 1 also includes a plurality of first connecting members 15, and one first connecting member 15 is arranged corresponding to one first through hole 11311, one end of the first connecting member 15 is fixedly connected to the first side panel 1131, and the other end of the first connecting member 15 passes through the first through hole 11311 and the second through hole 11321, and is fixedly connected to the second side panel 1132, thereby strengthening the connection between the side panels 113 by multi-point fixing, thereby improving the mechanical stability of the entire box body 11.

[0087] It can be understood that, in this embodiment, the first through hole 11311 and the second through hole 11321 are aligned and connected, one end of the first connecting member 15 is fixedly connected to the first side plate 1131, and the other end of the first connecting member 15 passes through the first through hole 11311 and the second through hole 11321 and is fixedly connected to the second side plate 1132, thereby ensuring that the first connecting member 15 forms a tight mechanical connection between the first side plate 1131 and the second side plate 1132, thereby reducing possible gaps or looseness between the side plate 113 and the second monitoring component 14, thereby preventing the external environment (such as dust or water vapor) from entering the interior of the battery module 1, and improving the overall sealing.

[0088] Furthermore, a plurality of third through holes (not shown) are provided on a side of the second side panel 1132 close to the bottom panel 112, and a plurality of fourth through holes 1121 are provided on the bottom panel 112, and one of the third through holes is arranged corresponding to and connected to one of the fourth through holes 1121; wherein, the battery module 1 also includes a plurality of second connecting members 16, and one of the second connecting members 16 is arranged corresponding to one of the fourth through holes 1121, and one end of the second connecting member 16 is fixedly connected to the bottom panel 112, and the other end of the second connecting member 16 passes through the fourth through hole 1121 and the third through hole, and is fixedly connected to the second side panel 1132, thereby strengthening the connection between the side panel 113 and the bottom panel 112 by multi-point fixing, and further improving the mechanical stability of the entire box body 11.

[0089] It should be noted that this embodiment does not impose any specific restrictions on the number of the first through holes 11311, the number of the second through holes 11321, the number of the third through holes, the number of the fourth through holes 1121, the number of the first connecting members 15, and the number of the second connecting members 16; wherein the first connecting member 15 and the second connecting member 16 both include but are 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 is disposed between two adjacent battery cells 121 , and one foam 17 is disposed between the battery cell 121 and the end plate 123 .

[0091] The foam 17 can be a buffer material, which is arranged between two adjacent battery cells 121, so as to effectively absorb the mechanical stress 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 avoid wear or damage caused by direct contact between the battery cells 121.

[0092] At the same time, the foam 17 is arranged 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 box 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 to assist in heat conduction while reducing mechanical stress, thereby helping to achieve uniform heat distribution between adjacent battery cells 121 and avoiding local overheating problems, thereby improving the thermal management efficiency of the battery module 1, extending the life of the battery cell 121, and ensuring the safety of the battery module 1.

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

[0095] It is understandable 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, and the battery module 1 is used as a power supply for the electrical equipment. Therefore, the electrical equipment also has the advantages of the above-mentioned battery module 1, which helps to simplify the overall structure of the electrical equipment; wherein, the electrical equipment can be a car, an aircraft, a mechanical production equipment, etc.

[0097] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery module, characterized in that: include: The box body comprises a bottom plate and a plurality of side plates connected to each other, wherein the bottom plate and the plurality of side plates enclose a receiving cavity having a first port; A battery cell assembly is arranged in the accommodating cavity, wherein the battery cell assembly comprises a plurality of battery cells stacked along a first direction, and the plurality of battery cells are arranged between the two side plates; A first monitoring component, directly connected to each of the battery cells, the first monitoring component being used to monitor first operating data of the battery cells; A second monitoring component is disposed on one side of the battery cell component, and the second monitoring component is used to monitor second working data of the battery cell; The first monitoring component includes a first transmission port, the second monitoring component includes a second transmission port, and the first transmission port and the second transmission port are spaced apart.

2. The battery module according to claim 1, characterized in that: The first monitoring component comprises: A plurality of connection rows are arranged on the top of the battery cell assembly, wherein one of the connection rows is located between two adjacent battery cells, and one end of the connection row is connected to one of the battery cells, and the other end of the connection row is connected to another of the battery cells; A collection harness is arranged on the top and / or side of the battery cell assembly, and at least part of the collection harness is electrically connected to each of the connection bars; A mounting plate is arranged on the top of the battery cell assembly, and the mounting plate is provided with a plurality of mounting slots, and the plurality of mounting slots are arranged on both sides of the collection harness, and one mounting slot corresponds to one connection row; Wherein, the connecting row is arranged in the installation groove.

3. The battery module according to claim 2, characterized in that: The first monitoring component includes a plurality of first sensors, the first sensors are used to obtain first working data of the battery cell, one first sensor is arranged corresponding to one battery cell, and the first sensor is arranged on the top of the battery cell; The first working data includes temperature data, the acquisition wiring harness includes a plurality of first acquisition wires, one end of one of the first acquisition wires corresponds to and is connected to one of the first sensors, and the other end of one of the first acquisition wires is connected to the first transmission port.

4. The battery module according to claim 3, characterized in that: The battery core includes an explosion-proof valve, and the explosion-proof valve is located on the top of the battery core; The mounting plate is provided with a plurality of exhaust holes, and one exhaust hole corresponds to one explosion-proof valve; Wherein, the first sensor is arranged close to the explosion-proof valve.

5. The battery module according to claim 3, characterized in that: The acquisition harness includes a plurality of second acquisition lines, the second acquisition lines are used to obtain the first working data of the battery cell, the second acquisition lines are arranged on the top of the battery cell assembly, and one end of one of the second acquisition lines corresponds to and is connected to one of the connecting bars, and the other end of one of the second acquisition lines 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, the second sensors are used to obtain the first working data of the battery cell, two second sensors are arranged corresponding to one battery cell, and the second sensors are arranged on the side of the battery cell; The acquisition line bundle includes a plurality of third acquisition lines, one end of one of the third acquisition lines corresponds to and is connected to one of the second sensors, and the other end of one of the third acquisition lines 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 monitoring component includes a first cushion layer, a second cushion layer and a third sensor, the second cushion layer is arranged on a side of the first cushion layer close to the side plate, a receiving groove is provided on a side of the second cushion layer close to the side plate, and the third sensor is used to obtain the second working data of the battery cell; 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 cushion layer, and the other side of the third sensor abuts against the side plate.

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, 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, the second side plates are provided with a plurality of second through holes, and one second through hole is provided corresponding to one first through hole and is connected; Wherein, the battery module also includes multiple first connecting members, one first connecting member is arranged corresponding to one first through hole, one end of the first connecting member is fixedly connected to the first side plate, and the other end of the first connecting member 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 a foam, and one foam is arranged between two adjacent battery cells.

10. An electrical device, characterized in that: A battery module comprising the battery module as claimed in any one of claims 1 to 9.

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