Battery module and electric equipment

Abstract

The utility model provides a battery module and electric equipment, the battery module comprises a battery cell component and a connecting component, the battery cell component comprises at least two battery cell components which are arranged at intervals along a first direction, and each battery cell component comprises a plurality of battery cells which are stacked along a second direction; the connecting assembly is arranged on one side of the battery core assembly and comprises a plurality of first connecting rows and a plurality of second connecting rows, the first connecting rows are used for connecting two adjacent battery core pieces, the second connecting rows are used for connecting two adjacent battery cores, one end of each first connecting row is directly connected with the battery core in one battery core piece, and the other end of each second connecting row is directly connected with the battery core in the other battery core piece. According to the battery module, the first connecting bar and the second connecting bar are integrated into the connecting assembly, so that a bridging functional part additionally arranged in the related technology is omitted, the number of parts in the battery module is reduced, the function integration level in the battery module is optimized, and the battery module is more compact in structure and more compact in structure. And the assembly efficiency of the battery module is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery module and electric equipment. BACKGROUND

[0002] New energy vehicles demand large battery capacity, and have high quality requirements for batteries, so the battery is crucial for new energy vehicles. In order to meet the demand of new energy vehicles for large capacity batteries, the related art usually uses battery module power supply. The battery module refers to the combination of battery cells connected in series and / or parallel, with protection circuit board and shell, which can directly supply power.

[0003] The related art usually uses integrated connection row design to connect multiple battery cells in series and / or parallel according to the demand, so as to form the required voltage and capacity output. However, the current integrated connection row design in the related art has the technical challenges of low functional integration, insufficient space utilization, difficult optimization of production efficiency and cost, and poor temperature collection reliability, which limits the performance improvement and industrialization efficiency of the battery system. SUMMARY

[0004] The utility model embodiment provides a kind of battery module and electric equipment to solve or at least partially solve the deficiency of the background art.

[0005] In a first aspect, the utility model embodiment provides a kind of battery module, comprising:

[0006] Battery cell subassembly, comprising at least two battery cell subassemblies spaced apart along a first direction, each battery cell subassembly includes a plurality of battery cells stacked along a second direction;

[0007] Connection assembly, set to one side of the battery cell subassembly, the connection assembly includes a plurality of first connection rows and a plurality of second connection rows, the first connection row is used to connect adjacent two battery cell subassemblies, and the second connection row is used to connect adjacent two battery cells.

[0008] Wherein, one end of the first connection row is directly connected with the battery cell in one battery cell subassembly, and the other end of the first connection row is directly connected with the battery cell in adjacent another battery cell subassembly.

[0009] In an embodiment, the first connection row includes a connection main body and a plurality of connection subassemblies, one connection subassembly corresponds to one battery cell subassembly, and one end of the connection subassembly is connected with the connection main body, and the other end of the connection subassembly is directly connected with the battery cell of the battery cell subassembly.

[0010] In an embodiment, a plurality of adjacent battery cells in any battery cell subassembly form a battery cell group.

[0011] The battery module further comprises a monitoring assembly, the monitoring assembly comprises a plurality of first sensors, one of the first sensors corresponds to one of the battery cell groups, and the first sensor is arranged on the top of any one of the battery cells in the battery cell group;

[0012] The first sensor is used to obtain first working data of the battery cell, and the first working data comprises temperature data.

[0013] In an embodiment, the monitoring assembly further comprises a heat-conducting part, the heat-conducting part is arranged between the first sensor and the battery cell assembly, one end of the heat-conducting part is in contact with the battery cell, and the other end of the heat-conducting part is in contact with the first sensor.

[0014] In an embodiment, the monitoring assembly comprises a plurality of mounting brackets, the mounting brackets are arranged on the top of the battery cell sub-components, and one of the mounting brackets corresponds to one of the first sensors;

[0015] The mounting bracket comprises a first accommodating groove, the first accommodating groove is in communication with the battery cell, and the first sensor is arranged in the first accommodating groove.

[0016] In an embodiment, the monitoring assembly further comprises a plurality of mounting plates, one of the mounting plates corresponds to one of the battery cell sub-components, the mounting plate is located on the top of the battery cell sub-component, and the mounting plate is provided with a plurality of first mounting grooves, one of the first mounting grooves corresponds to one of the mounting brackets;

[0017] The mounting bracket is arranged in the first mounting groove, and the mounting bracket is fixedly connected with the mounting plate.

[0018] In an embodiment, the mounting bracket comprises a base and a protruding part, the base is arranged between the mounting plate and the battery cell assembly, the protruding part extends from the base towards the first mounting groove, the protruding part is located in the first mounting groove, and the protruding part comprises the first accommodating groove;

[0019] The base is fixedly connected with the mounting plate, and the protruding part is arranged in the first mounting groove.

[0020] In an embodiment, the mounting plate is provided with a first riveting hole, the base is provided with a first riveting column, the first riveting column corresponds to the first riveting hole, and the first riveting column is inserted into the first riveting hole.

[0021] In an embodiment, the monitoring assembly further comprises:

[0022] A transmission port is arranged on the other side of the battery cell assembly.

[0023] A collection wire harness is arranged on the side of the mounting plate away from the battery cell subassembly, the collection wire harness comprises a plurality of first collection wires and a plurality of second collection wires, one end of one of the first collection wires corresponds to and is connected to one of the first sensors, the other end of one of the first collection wires is connected to the transmission port, one end of one of the second collection wires corresponds to and is connected to one of the connecting subassemblies, and the other end of one of the second collection wires is connected to the transmission port of the monitoring assembly.

[0024] The second collection wire is used to obtain second working data of the battery cell, and the second working data comprises voltage data.

[0025] In an embodiment, the second connecting row comprises a plurality of connecting pieces, one of the connecting pieces is located between two adjacent battery cells, one end of the connecting piece is connected to one of the battery cells, and the other end of the connecting piece is connected to another of the battery cells.

[0026] The mounting plate is provided with a plurality of second mounting grooves, the plurality of second mounting grooves are arranged on both sides of the collection wire harness, and one of the second mounting grooves is arranged corresponding to one of the connecting pieces, and the connecting piece is arranged in the second mounting groove.

[0027] The collection wire harness further comprises a plurality of third collection wires, one end of one of the third collection wires corresponds to and is connected to one of the connecting pieces, and the other end of one of the third collection wires is connected to the transmission port of the monitoring assembly.

[0028] The third collection wire is used to obtain second working data of the battery cell, and the second working data comprises voltage data.

[0029] In an embodiment, a plurality of second rivet columns are arranged on the mounting plate, a plurality of second rivet holes are arranged on the connecting piece, one of the second rivet columns is arranged corresponding to one of the second rivet holes, and the second rivet column is inserted into the second rivet hole.

[0030] In an embodiment, the monitoring assembly comprises a plurality of nickel pieces, one of the nickel pieces is arranged corresponding to one of the connecting subassemblies, one end of the nickel piece is fixedly connected to the connecting subassembly, and the other end of the nickel piece is fixedly connected to the second collection wire.

[0031] The connecting subassembly is provided with a second accommodating groove, and at least part of the nickel pieces are arranged in the second accommodating groove.

[0032] Second aspect. The utility model embodiment provides a kind of electric equipment, including the battery module described in any one of the above embodiments.

[0033] The embodiment of the utility model provides a kind of battery module and electrical equipment, the battery module includes electric core subassembly and connecting component, the electric core subassembly includes at least two electric core subassemblies spaced apart along the first direction, each described electric core subassembly includes multiple electric cores stacked along the second direction;The connecting component is arranged in one side of the electric core subassembly, the connecting component includes multiple first connecting rows and multiple second connecting rows, the first connecting row is used to connect adjacent two described electric core subassemblies, and the second connecting row is used to connect adjacent two described electric cores;Wherein, one end of the first connecting row is directly connected with the electric core in one described electric core subassembly, and the other end of the connecting row is directly connected with the electric core in adjacent another described electric core subassembly, by integrating the first connecting row and the second connecting row into the connecting component, thereby omitting the jumper function piece additionally arranged in the related art, reduce the number of parts inside the battery module, to optimize the functional integration degree in the battery module, improve the assembly efficiency of the battery module, save labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 The structural schematic diagram of the battery module provided by the embodiment of the utility model is shown in the figure.

[0036] Figure 2 The explosion schematic diagram of the battery module provided by the embodiment of the utility model is shown in the figure.

[0037] Figure 3 The top view schematic diagram of the connecting component and monitoring component after assembly provided by the embodiment of the utility model is shown in the figure.

[0038] Figure 4 The bottom view schematic diagram of the connecting component and monitoring component after assembly provided by the embodiment of the utility model is shown in the figure.

[0039] Figure 5 The first connecting row structural schematic diagram provided by the embodiment of the utility model is shown in the figure.

[0040] Figure 6 The structural schematic diagram of the first sensor and mounting bracket after assembly provided by the embodiment of the utility model is shown in the figure.

[0041] Figure 7The top view schematic diagram of the first sensor and the mounting bracket after assembly is provided for the embodiment of the utility model.

[0042] Figure 8 The top view schematic diagram of the first sensor and the mounting bracket after assembly is provided for the embodiment of the utility model. Figure 3 The enlarged schematic view of A in the middle.

[0043] Figure 9 The top view schematic diagram of the first sensor and the mounting bracket after assembly is provided for the embodiment of the utility model. Figure 4 The enlarged schematic view of B in the middle.

[0044] Mark explanation:

[0045] 1-battery module;11-box;12-cell assembly;13-connection assembly;14-monitoring assembly;111-bottom plate;112-side plate;113-housing cavity;

[0046] 120-cell group;121-cell subassembly;1211-cell;1211-first cell subassembly;1212-first cell subassembly;1213-third cell subassembly;1214-fourth cell subassembly;12111-first cell;12121-second cell;12131-third cell;12141-fourth cell;

[0047] 131-first connection row;132-second connection row;133-first output row;134-second output row;135-third connection row;1311-connection main body;1312-connection subassembly;1313-Bucky adhesive tape;13111-insulating film;13121-second accommodating groove;13122-fourth hot riveting hole;13123-fifth hot riveting hole;1321-connection sheet;13211-positioning mark;13212-second hot riveting hole;1321A-first connection sheet;1321A1-third hot riveting hole;

[0048] 141-first sensor;142-mounting bracket;143-heat conduction part;144-mounting plate;145-transmission port;146-acquisition wire harness;147-nickel sheet;1421-first accommodating groove;1422-base;1423-protruding part;14211-first through hole;14221-first hot riveting column;14222-second exhaust hole;1441-first mounting groove;1442-first hot riveting hole;1443-first exhaust hole;1444-second mounting groove;1445-second hot riveting column;1446-third hot riveting column;1461-first acquisition wire;1462-second acquisition wire;1463-third acquisition wire. Specific implementation

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the present application, and is not used to limit the present application. In the present application, the orientation words such as "upper" and "lower" generally refer to the upper and lower directions of the device in the actual use or working state, and specifically refer to the drawing direction in the drawings; and "inner" and "outer" refer to the outline of the device.

[0050] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 ; wherein, Figure 1 is a structural schematic diagram of a battery module provided by the embodiments of the present application; Figure 2 is an exploded schematic diagram of a battery module provided by the embodiments of the present application; Figure 3 is a top view schematic diagram of the assembled connection assembly and monitoring assembly provided by the embodiments of the present application; Figure 4 is a bottom view schematic diagram of the assembled connection assembly and monitoring assembly provided by the embodiments of the present application.

[0051] It should be noted that, in Figure 2 , the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction; wherein, the first direction X, the second direction Y and the third direction Z are all perpendicular to each other, Figure 3 may also be a front view schematic diagram of the assembled connection assembly and monitoring assembly along the third direction Z; Figure 4 may also be a front view schematic diagram of the assembled connection assembly and monitoring assembly along the opposite direction of the third direction Z.

[0052] In an embodiment, the battery module 1 comprises a box body 11, a cell assembly 12 and a connection assembly 13; the box body 11 comprises a bottom plate 111 and a plurality of side plates 112 connected with each other, and the bottom plate 111 and the plurality of side plates 112 enclose a containing cavity 113 with a first port; it should be noted that the technical solutions of the present application are exemplified by taking the box body 11 comprising four side plates 112 as an example.

[0053] The electric core assembly 12 is arranged in the accommodating cavity 113, the electric core assembly 12 comprises at least two electric core sub-assemblies 121 arranged at intervals along a first direction X, each of the electric core sub-assemblies 121 comprises a plurality of electric cores 1211 arranged in a second direction Y in a stacked manner, the plurality of electric cores 1211 are arranged in series, and the electric cores 1211 include but are not limited to square electric cores 1211; it should be noted that the number of the electric cores 1211 in one of the electric core sub-assemblies 121 is not limited in the embodiment, one of the electric core sub-assemblies 121 can comprise two, three, four, five or more electric cores 1211, and the specific number can be flexibly adjusted according to the voltage and capacity requirements in the actual application scene, the module design requirements and the space limitation.

[0054] The connecting assembly 13 is arranged on one side of the electric core assembly 12, the connecting assembly 13 comprises a plurality of first connecting rows 131 and a plurality of second connecting rows 132, the first connecting rows 131 are used for connecting two adjacent electric core sub-assemblies 121, and the second connecting rows 132 are used for connecting two adjacent electric cores 1211; wherein one end of the first connecting row 131 is directly connected with an electric core 1211 in one of the electric core sub-assemblies 121, and the other end of the first connecting row 131 is directly connected with an electric core 1211 in the other adjacent electric core sub-assembly 121.

[0055] It should be noted that in the related art, an additional jumper row or jumper functional component is usually arranged to realize the jumper function between adjacent electric core sub-assemblies; wherein the jumper row or jumper functional component increases the number of parts inside the battery module, causes the structure to be complicated and the assembly efficiency to be reduced, thereby adversely affecting the overall energy density of the battery module.

[0056] It can be understood that, in the embodiment, the first connecting rows 131 and the second connecting rows 132 are integrated into the connecting assembly 13, the first connecting rows 131 and the second connecting rows 132 are respectively used for connecting adjacent electric cores 1211 or electric core sub-assemblies 121 in series and / or parallel, thereby omitting the additional jumper functional component in the related art, reducing the number of parts inside the battery module 1, optimizing the functional integration degree in the battery module 1, improving the assembly efficiency of the battery module 1, and saving labor cost.

[0057] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 ; wherein; Figure 5 is a first connecting row structure schematic diagram provided by the embodiment of the utility model.

[0058] In an embodiment, the first connection row 131 comprises a connection main body 1311 and a plurality of connection sub-pieces 1312, one of the connection sub-pieces 1312 corresponds to one of the battery cell sub-pieces 121, and one end of the connection sub-piece 1312 is connected with the connection main body 1311, and the other end of the connection sub-piece 1312 is directly connected with the battery cell 1211 of the battery cell sub-piece 121, so that through the combined design of the connection sub-piece 1312 and the connection main body 1311, the layout of the first connection row 131 is optimized, and the space utilization efficiency of the battery box is improved.

[0059] It should be noted that the battery cell sub-piece 121 usually needs to be separately provided with a positive output row and a negative output row to realize the power transmission function of each battery cell sub-piece 121; in the related art, a fixed base is usually provided to fix the position of the output pole connection row, so as to ensure that the connection between the output pole connection row and the battery cell is stable and not easy to loosen; wherein, the base 1422 of the output pole connection row needs a certain volume for support and fixation, which may cause the overall size of the battery cell sub-piece to increase and reduce the space utilization; and when a plurality of battery sub-pieces are connected in series and / or parallel, each battery sub-piece needs to be independently provided with an output pole connection row (positive and negative), thereby further causing the layout design of the base 1422 to be more complex, occupy space and affect the assembly efficiency.

[0060] It can be understood that, by providing the first connection row 131 for connecting the adjacent battery cell sub-pieces 121 in series and / or parallel, the output pole connection row in the related art is reduced, so that the battery module 1 structure is more compact, and the overall energy density is improved; at the same time, more space is provided for increasing the number of battery cells 1211, the assembly efficiency of the battery module 1 is improved, and the labor cost is saved.

[0061] Furthermore, by one-to-one correspondence between the connection sub-piece 1312 and the battery cell sub-piece 121, the precise positioning of the first connection sub-row and the battery cell sub-piece 121 is realized, and the efficiency and consistency of the installation process are improved; at the same time, the design of the connection sub-piece 1312 makes the connection between the first connection row 131 and the battery cell 1211 more stable, reduces the risk of poor contact caused by installation errors, and improves the long-term reliability of the connection between the adjacent battery cell sub-pieces 121.

[0062] The connecting body 1311 and the connecting sub-piece 1312 can be integrally formed, so that the production process of the connecting assembly 13 can be simplified, the number of parts and the mold requirement are reduced, and the manufacturing efficiency of the battery module 1 is improved; meanwhile, the integrally formed design enhances the integrity and connection reliability of the first connecting row 131, can avoid the connection loosening problem caused by vibration, thermal expansion or aging, and improves the stability of the battery module 1 during long-term operation.

[0063] The material of the first connecting row 131 includes but is not limited to 1060 aluminum; wherein the 1060 aluminum material is a high-purity aluminum with good electrical conductivity, ductility and plasticity, which is easy to process into a connecting row with complex shape and meets the high-precision processing requirement; further, the H24 heat treatment process can be used to improve the strength of the aluminum material, so as to enhance the strength of the first connecting row 131, so that the first connecting row 131 can withstand current impact and mechanical stress during work; meanwhile, the 1060 aluminum after H24 heat treatment has good oxidation resistance and corrosion resistance, which can improve the stability of the first connecting row 131.

[0064] Further, an insulating film 13111 is arranged on the outer surface of the connecting body 1311, the insulating film 13111 is used to enhance the insulation performance of the connecting body 1311, avoid safety hazards caused by accidental contact or short circuit, and improve the overall safety and reliability of the first connecting row 131.

[0065] A cloth-based adhesive tape 1313 is arranged on the side of the insulating film away from the connecting body 1311, and a wire harness is arranged on the cloth-based adhesive tape 1313, so that the connecting body 1311 is fixedly connected with the box body 11; wherein the cloth-based adhesive tape 1313 can enhance the mechanical strength of the insulating film 13111, improve the wear resistance, and facilitate fixation and positioning during assembly, and further improve the reliability and assembly efficiency of the first connecting row 131.

[0066] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 ; wherein; Figure 6 is a structure schematic view of the first sensor and the mounting bracket after assembly provided by the embodiment of the utility model; Figure 7 is a top view schematic view of the first sensor and the mounting bracket after assembly provided by the embodiment of the utility model.

[0067] In an embodiment, the battery module 1 further comprises a monitoring assembly 14, which is directly connected with each of the battery cells 1211, and the monitoring assembly 14 is used for monitoring first working data of the battery cells 1211; wherein the first working data is temperature data, and the monitoring assembly 14 can be a cell connection system (CCS), which is mainly used for electrical connection and management of the battery cells 1211 in the battery module 1.

[0068] Specifically, a plurality of the battery cell groups 120 in any of the battery cell subassemblies 121 form one battery cell group 120, thereby facilitating centralized management and monitoring of a plurality of the battery cells 1211; the monitoring assembly 14 comprises a plurality of first sensors 141, one of the first sensors 141 is arranged corresponding to one of the battery cell groups 120, and the first sensor 141 is arranged on the top of any of the battery cells 1211 in the battery cell group 120; wherein the first sensor 141 is used for acquiring the first working data of the battery cells 1211.

[0069] It should be noted that the number of the battery cells 1211 in the battery cell group 120 is not specifically limited in the embodiment, that is, the design of the battery cell group 120 can be changed according to different numbers and specifications of the battery cells 1211, thereby making the monitoring assembly 14 have higher versatility and flexibility, and being able to adapt to the needs of different types of the battery module 1.

[0070] The first sensor 141 can be a temperature sensor, the first working data can be temperature data, the first sensor 141 is arranged on the top of any of the battery cells 1211 in the battery cell group 120, and one of the first sensors 141 is used for monitoring the temperature data on the top of a plurality of the battery cells 1211 in one of the battery cell groups 120, thereby ensuring the accuracy of the collection of the temperature data and reflecting the actual working state of the battery cells 1211.

[0071] Meanwhile, it can be understood that, compared with separately arranging one of the first sensors 141 for each of the battery cells 1211, thereby resulting in that the structure of the battery module 1 is too complex and the cost is increased, the embodiment combines a plurality of the battery cells 1211 into one of the battery cell groups 120, and arranges one of the first sensors 141 in one of the battery cell groups 120, thereby being able to reduce the number of the first sensors 141 in the monitoring assembly 14, simplify the design of the battery module 1, and further reduce the cost of the battery module 1.

[0072] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 ,Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 ; wherein, Figure 8 is an enlarged schematic view of the position A in the Figure 3 provided by the utility model embodiment; Figure 9 is an enlarged schematic view of the position B in the Figure 4 provided by the utility model embodiment.

[0073] In an embodiment, the monitoring assembly 14 comprises a plurality of mounting brackets 142, the mounting brackets 142 are arranged on the top of the battery cell subassembly 121, one mounting bracket 142 corresponds to one first sensor 141; wherein the mounting bracket 142 comprises a first accommodating groove 1421, the first accommodating groove 1421 is communicated with the battery cell 1211, and the first sensor 141 is arranged in the first accommodating groove 1421, so that the first sensor 141 can be stably arranged on the top of the battery cell assembly 12, and the installation mode of the first sensor 141 and the reliability of the first working data acquisition are improved.

[0074] Specifically, when the battery cell 1211 expands due to the volume change caused by the internal chemical reaction in the charging and discharging process, the installation position of the first sensor 141 can be affected, and the reliability of the first working data acquisition is reduced; the embodiment is arranged by the mounting bracket 142 comprising the first accommodating groove 1421, the first accommodating groove 1421 is communicated with the battery cell 1211, and the first sensor 141 is arranged in the first accommodating groove 1421, so that the influence of the expansion of the battery cell 1211 on the position of the first sensor 141 can be effectively reduced, and the accuracy of the first working data collected by the first sensor 141 is improved.

[0075] The material of the mounting bracket 142 comprises but is not limited to polypropylene and glass fiber, the polypropylene base material and 10% glass fiber are uniformly mixed, heated to above the melting point, the material is in a completely molten flow state, then injected into a mold, the mold contains the shape structure of the mounting bracket 142, after the mold is cooled, the molten material is solidified in the mold to form the final mounting bracket 142; it can be understood that the addition of 10% glass fiber in polypropylene can significantly improve the rigidity, tensile strength and dimensional stability of the material, and reduce the deformation caused by long-term stress or temperature change; in addition, the glass fiber can effectively improve the fatigue resistance of the material, and further improve the strength of the mounting bracket 142.

[0076] Further, the monitoring assembly 14 further comprises a heat-conducting part 143, which is arranged between the first sensor 141 and the battery cell assembly 12, and one end of the heat-conducting part 143 is in contact with the battery cell 1211, and the other end of the heat-conducting part 143 is in contact with the first sensor 141, so that when the first sensor 141 is a temperature sensor and the first working data is temperature data, the heat-conducting part 143 can act as a medium to enhance the thermal contact between the battery cell 1211 and the first sensor 141, ensuring that the first sensor 141 can quickly and accurately collect the temperature data of the battery cell 1211, further improving the accuracy of the temperature data.

[0077] In one embodiment, the heat-conducting part 143 can be a heat-conducting glue, which can be arranged between the first sensor 141 and the battery cell 1211, and can also be filled between the first sensor 141 and the inner wall of the first accommodating groove 1421. The heat-conducting part 143 can act as a buffer device to maintain the relative position of the first sensor 141 when the battery cell 1211 deforms (e.g. expands), reducing the risk of invalid collection of the first working data and improving the reliability of the monitoring assembly 14.

[0078] Please continue to combine Figures 1 to 9 In one embodiment, the monitoring assembly 14 further comprises a plurality of mounting plates 144, one of which corresponds to one of the battery cell subassemblies 121. The mounting plate 144 is located on the top of the battery cell subassembly 121, and the mounting plate 144 is provided with a plurality of first mounting grooves 1441, one of which corresponds to one of the mounting brackets 142. The mounting bracket 142 is arranged in the first mounting groove 1441, and the mounting bracket 142 is fixedly connected with the mounting plate 144, so that the mounting bracket 142 can be firmly fixed at a predetermined position of the mounting plate 144, and the fixed connection between the mounting bracket 142 and the mounting plate 144 improves the stability of the connection between the monitoring assembly 14 and the battery cell assembly 12, so that the monitoring assembly 14 is not easy to loosen or separate due to vibration, impact or expansion of the battery cell 1211.

[0079] Specifically, the mounting bracket 142 comprises a base 1422 and a protruding portion 1423, the base 1422 is arranged between the mounting plate 144 and the battery cell assembly 12, the protruding portion 1423 extends from the base 1422 to the direction close to the first mounting groove 1441, and the protruding portion 1423 is located in the first mounting groove 1441, the protruding portion 1423 comprises the first accommodating groove 1421; wherein, the base 1422 is fixedly connected with the mounting plate 144, and the protruding portion 1423 is arranged in the interval with the inner wall of the first mounting groove 1441.

[0080] It can be understood that, by arranging the base 1422 fixedly connected with the mounting plate 144, the mounting bracket 142 can be prevented from being displaced or loosened due to external force or expansion of the battery cell 1211; wherein, the base 1422 provides stable basic support, and the first accommodating groove 1421 in the protruding portion 1423 is used for mounting the first sensor 141, so that the position of the first sensor 141 in the first mounting groove 1441 can be ensured to be accurate and not easy to deviate, and the first sensor 141 can be ensured to maintain good contact with the battery cell 1211, thereby improving the accuracy of the first working data.

[0081] Meanwhile, the protruding portion 1423 is arranged in the interval with the inner wall of the first mounting groove 1441, so that the mounting bracket 142 can be prevented from contacting the inner wall of the first mounting groove 1441 and generating additional stress interference, while allowing slight deformation buffering and reducing the influence of vibration on the first sensor 141; and by arranging the mounting bracket 142 in the first mounting groove 1441, the size of the monitoring assembly 14 in the overall thickness direction can be reduced, thereby reducing the occupied space of the monitoring assembly 14 on the top of the battery cell assembly 12, and providing a more compact design for the battery module 1.

[0082] Please continue to combine Figures 1 to 9 ; in an embodiment, the mounting plate 144 is provided with a first riveting hole 1442, the base 1422 is provided with a first riveting column 14221, the first riveting column 14221 is arranged corresponding to the first riveting hole 1442, and the first riveting column 14221 is inserted into the first riveting hole 1442, so that high-strength and integrated firm connection can be realized by using the riveting process, and the loosening of the mounting bracket 142 caused by vibration, impact or thermal expansion can be effectively prevented.

[0083] Specifically, when assembling the mounting bracket 142, only the first hot riveting column 14221 and the first hot riveting hole 1442 need to be inserted into each other, and then the hot pressing equipment is used for hot pressing treatment, so that the mounting bracket 142 can be fixed in the first mounting groove 1441 of the mounting plate 144, without additional screws or glue, thereby reducing the number of parts and assembly process steps, and significantly improving the assembly efficiency; meanwhile, the insertion and cooperation of the first hot riveting column 14221 and the first hot riveting hole 1442 provide precise positioning function, so that the mounting bracket 142 is always in the designed fixed position, thereby improving the consistency of the overall assembly.

[0084] It should be noted that the first hot riveting hole 1442 is provided on the mounting plate 144, and the first hot riveting column 14221 is provided on the base 1422 in the embodiment, which is only used for example, and in another embodiment, the first hot riveting column 14221 can be provided on the mounting plate 144, and the first hot riveting hole 1442 can be provided on the base 1422; that is, the position of the first hot riveting hole 1442 and the first hot riveting column 14221 is not limited in the embodiment.

[0085] In order to better illustrate the innovation of the embodiment, the embodiment takes that the base 1422 is provided with two first hot riveting columns 14221, and the mounting plate 144 is provided with two first hot riveting holes 1442 as an example to illustrate the technical scheme of the utility model.

[0086] The two first hot riveting columns 14221 are oppositely arranged along the first direction X, and the two first hot riveting columns 14221 are symmetrically arranged about the center line of the battery cell 1211; it can be understood that, by arranging that the base 1422 is provided with two first hot riveting columns 14221, the mounting plate 144 is provided with two first hot riveting holes 1442, and the first hot riveting column 14221 is inserted into the first hot riveting hole 1442, the stress of the hot riveting connection is effectively dispersed, and local deformation or loosening caused by single-point stress is avoided; meanwhile, the two first hot riveting columns 14221 are oppositely arranged along the second direction Y, so that the alignment of the mounting plate 144 and the base 1422 is ensured, the offset error is reduced, and the assembly quality is improved.

[0087] Meanwhile, two first hot riveting columns 14221 are symmetrically arranged about the center line of the battery cell 1211, so that the first hot riveting holes 1442 of the mounting plate 144 have uniform layout, thereby simplifying the positioning and arrangement of the mold during manufacturing of the mounting plate 144, and only one side needs to be processed, and the other side can be realized by mirroring, which greatly improves the consistency and precision of the mold, that is, multiple mounting plates 144 can be produced by using the same mold, thereby reducing the design and manufacturing cost of the mold.

[0088] Further, a plurality of first exhaust holes 1443 are formed in the mounting plate 144, one of which corresponds to the explosion-proof valve of one battery cell 1211; wherein a second exhaust hole is also formed in the bottom plate 111, one of which corresponds to one first exhaust hole 1443 and is communicated; it can be understood that the explosion-proof valve is arranged at the top of the battery cell 1211, and is connected with the external environment through the first exhaust hole 1443 and the second exhaust hole, the position of the first exhaust hole 1443, the position of the second exhaust hole, and the position of the explosion-proof valve correspond to each other, thereby ensuring that the battery cell 1211 can release pressure in time when abnormal conditions such as overpressure and overheating occur, and ensuring the safety of the battery module 1.

[0089] Please continue to combine Figures 1 to 9 ; in an embodiment, the monitoring assembly 14 further comprises a transmission port 145 and a collection wire harness 146, the transmission port 145 is arranged on the other side of the battery cell assembly 12; the collection wire harness 146 is arranged on the side of the mounting plate 144 away from the battery cell subelement 121, the collection wire harness 146 comprises a plurality of first collection lines 1461 and a plurality of second collection lines 1462, one end of one first collection line 1461 corresponds to and is connected with one first sensor 141, the other end of one first collection line 1461 is connected with the transmission port 145, one end of one second collection line 1462 corresponds to and is connected with one connecting subelement 1312, the other end of one second collection line 1462 is connected with the transmission port 145 of the monitoring assembly 14; wherein the second collection line 1462 is used to obtain second working data of the battery cell 1211, the second working data comprises voltage data, thereby realizing comprehensive monitoring of the working state of the battery cell 1211, and providing real-time data support for safety and performance optimization of the battery module 1.

[0090] The transmission port 145 can be connected with a battery management system (BMS) for collecting, processing and analyzing data of the battery cell 1211 and taking protective measures as needed. The battery management system can detect potential failure of the battery cell 1211 by integrating first working data and second working data from different battery cells 1211 and timely alarm or automatically adjust the working state of the battery cell 1211.

[0091] Further, the first mounting groove 1441 comprises a first through hole 14211 communicating the first mounting groove 1441 with an external space, and the second collection line 1462 is connected with the first sensor 141 through the first through hole 14211, thereby improving the operability of installation and ensuring that the second collection line 1462 can be stably and effectively connected with the first sensor 141. Meanwhile, by designing the position and shape of the first through hole 14211, the second collection line 1462 can be prevented from interfering with other components, thereby improving the reliability and efficiency of overall structure wiring. It can be understood that the shape of the first through hole 14211 is not specifically limited in the embodiment.

[0092] Further, the monitoring assembly 14 comprises a plurality of nickel sheets 147, one of the nickel sheets 147 corresponding to one of the connection sub-members 1312, and one end of the nickel sheet 147 being fixedly connected with the connection sub-member 1312, and the other end of the nickel sheet 147 being fixedly connected with the second collection line 1462. The connection sub-member 1312 is provided with a second accommodating groove 13121, and at least part of the nickel sheets 147 are arranged in the second accommodating groove 13121, thereby realizing stable and fixed connection between the second collection line 1462 and the connection sub-member 1312 and reducing loosening problems caused by mechanical vibration, thermal expansion or long-term use.

[0093] The material of the nickel sheet 147 has good conductivity and corrosion resistance, and the signal is transmitted through the nickel sheet 147, which helps to reduce signal loss, improve transmission accuracy and anti-interference capability. The connection sub-member 1312 is provided with a second accommodating groove 13121, and at least part of the nickel sheets 147 are arranged in the second accommodating groove 13121, which can realize accurate positioning of the nickel sheets 147 and avoid deviation or loosening of the nickel sheets 147 during assembly or use, thereby ensuring reliable connection of the nickel sheets 147 with the connection sub-member 1312 and the second collection line 1462. Meanwhile, at least part of the nickel sheets 147 are embedded in the second accommodating groove 13121, which effectively protects the nickel sheets 147 from external environment (such as collision, friction, etc.) and prolongs the service life of the nickel sheets 147.

[0094] The shape of the nickel sheet 147 can be U-shaped, and the transition assembly to the connecting sub-piece 1312 can effectively improve the assembly stability of the nickel sheet 147; wherein the six-point laser welding technology is adopted to realize the rigid connection of the nickel sheet 147 and the connecting sub-piece 1312, thereby further enhancing the firmness of the structure and the stability of the electrical performance, and further enabling the second collection wire 1462 to collect the voltage data at the connecting sub-piece 1312 through the nickel sheet 147, which can ensure the accuracy and reliability of the voltage signal transmission, and is conducive to the accurate judgment of the working state of the battery cell 1211 module by the monitoring assembly 14.

[0095] Please continue to combine Figures 1 to 9 In an embodiment, the second connecting row 132 includes a plurality of connecting sheets 1321, one of the connecting sheets 1321 is located between two adjacent battery cells 1211, one end of the connecting sheet 1321 is connected to one of the battery cells 1211, and the other end of the connecting sheet 1321 is connected to another of the battery cells 1211; the mounting plate 144 is provided with a plurality of second mounting grooves 1444, a plurality of second mounting grooves 1444 are arranged on both sides of the collection wire harness 146, and one second mounting groove 1444 is arranged corresponding to one connecting sheet 1321, and the connecting sheet 1321 is arranged in the second mounting groove 1444; the collection wire harness 146 further includes a plurality of third collection wires 1463, one end of one of the third collection wires 1463 corresponds to and is connected to one of the connecting sheets 1321, and the other end of one of the third collection wires 1463 is connected to the transmission port 145 of the monitoring assembly 14; wherein the third collection wire 1463 is used to obtain second working data of the battery cell 1211, and the second working data includes voltage data.

[0096] It can be understood that, in the embodiment, one end of one of the first collection wires 1461 corresponds to and is connected to one of the first sensors 141, the other end of one of the first collection wires 1461 is connected to the transmission port 145, one end of one of the second collection wires 1462 corresponds to and is connected to one of the connecting sub-pieces 1312, the other end of one of the second collection wires 1462 is connected to the transmission port 145 of the monitoring assembly 14, one end of one of the third collection wires 1463 corresponds to and is connected to one of the connecting sheets 1321, and the other end of one of the third collection wires 1463 is connected to the transmission port 145 of the monitoring assembly 14, thereby realizing the centralized transmission of various data, simplifying the arrangement of the collection wire harness 146, and improving the data transmission efficiency and stability.

[0097] Meanwhile, the first collection wires 1461, the second collection wires 1462 and the third collection wires 1463 are integrated on the mounting plate 144 in the mode of the integrated collection wire harness 146, so as to further simplify the structure of the battery module 1, reduce the occupation of the lateral and longitudinal space of the box 11, and improve the energy density of the battery module 1; meanwhile, the first connecting strip 131, the second connecting strip 132 and the collection wire harness 146 are integrated on the mounting plate 144, so as to realize the integrated design of the electrical connection between the battery cells 1211, the electrical connection between the battery cell subassemblies 121 and the collection of the first working data and the second working data of the battery cells 1211, thereby reducing the number of parts, optimizing the functional integration of the battery module 1, reducing the assembly complexity of the battery module 1, and further improving the industrialization efficiency of the battery module 1.

[0098] Please continue to combine Figures 1 to 9 In an embodiment, the connecting piece 1321 is provided with a plurality of positioning marks 13211 on one side close to the third collection wire 1463, one positioning mark 13211 corresponds to one battery cell 1211, and the connecting piece 1321 is processed by laser engraving process, so as to realize the accurate positioning of the connecting piece 1321 and facilitate the installation and welding of the third collection wire 1463.

[0099] It can be understood that the processing mode of the laser engraving process has the advantages of high precision, non-contact and customization, can significantly improve the processing quality, ensure that the third collection wire 1463 can correctly enter the ultrasonic welding equipment for welding, reduce the possibility of operation error, improve the precision and efficiency of welding, further ensure the firmness and reliability of the connection between the third collection wire 1463 and the connecting piece 1321, and avoid installation deviation or functional abnormality caused by positioning error.

[0100] Further, the edge of the connecting piece 1321 can be provided with an inclined edge, or the connecting piece 1321 can be a non-symmetrical structure; it can be understood that in the related art, the edge shape of the connecting piece 1321 is symmetrical, which is easy to cause installation error due to direction confusion during assembly, and the correct direction of the connecting piece 1321 can be quickly identified by workers or machines by setting the inclined edge on the edge of the connecting piece 1321, so as to reduce the assembly time.

[0101] Please continue to combine Figures 1 to 9In an embodiment, the mounting plate 144 is provided with a plurality of second rivet columns 1445, the connecting sheet 1321 is provided with a plurality of second rivet holes 13212, one second rivet column 1445 corresponds to one second rivet hole 13212, and the second rivet column 1445 is inserted into the second rivet hole 13212, so that the high-strength and integrated firm connection can be achieved by using the hot riveting process, and the loosening of the connecting sheet 1321 caused by vibration, impact or thermal expansion can be effectively prevented.

[0102] Specifically, the second connecting row 132 includes a plurality of first connecting sheets 1321A, the first connecting sheet 1321A is arranged close to the first mounting bracket 142, the first connecting sheet 1321A is provided with one second rivet hole 13212 and one third rivet hole 1321A1, one second rivet column 1445 corresponds to one second rivet hole 13212, and the second rivet column 1445 is inserted into the second rivet hole 13212, one third rivet hole 1321A1 corresponds to one first rivet hole 1442 and is communicated, one first rivet column 14221 is inserted into one first rivet hole 1442, and the first rivet column 14221 passes through the corresponding third rivet hole 1321A1; wherein the third rivet hole 1321A1 can adopt a waist-shaped hole design, and the first rivet column 14221 is arranged in a spaced manner with the inner wall of the third rivet hole 1321A1.

[0103] It can be understood that, by adopting the waist-shaped hole design of the third rivet hole 1321A1, a certain sliding space is provided, so that the first rivet column 14221 will not damage the connection structure due to stress concentration when the material is deformed due to temperature change, and the deformation or stress concentration of the material caused by excessive compression is avoided, thereby improving the reliability and service life of the hot riveting connection.

[0104] The mounting plate 144 is further provided with a plurality of third rivet columns 1446, the connecting sub-piece 1312 is provided with a plurality of fifth rivet holes 13123, one third rivet column 1446 corresponds to one fifth rivet hole 13123, and the third rivet column 1446 is inserted into the fifth rivet hole 13123, so that the high-strength and integrated firm connection can be achieved by using the hot riveting process, and the loosening of the connecting sub-piece 1312 caused by vibration, impact or thermal expansion can be effectively prevented.

[0105] Further, at least one of the first mounting bracket 142 is provided corresponding to one of the connecting sub-piece 1312, and a fourth hot riveting hole 13122 is formed on the connecting sub-piece 1312, the fourth hot riveting hole 13122 is provided corresponding to the first hot riveting hole 1442 and is communicated; wherein, in the first mounting bracket 142 provided corresponding to the connecting sub-piece 1312, the first hot riveting column 14221 on the base 1422 is provided corresponding to the fourth hot riveting hole 13122, the first hot riveting column 14221 is inserted into the first hot riveting hole 1442, and the first hot riveting column 14221 passes through the corresponding fourth hot riveting hole 13122, thereby further improving the connection strength between the connecting sub-piece 1312 and the mounting plate 144, and quick and accurate positioning and fixing can be achieved, and the assembly difficulty is reduced.

[0106] Please continue to combine Figures 1 to 9 ; in an embodiment, the battery cell assembly 12 includes a first battery cell sub-piece 121, a second battery cell sub-piece 121, a third battery cell sub-piece 121 and a fourth battery cell sub-piece 121; the first battery cell sub-piece 121 includes a first battery cell 1211, the second battery cell sub-piece 121 includes a second battery cell 1211, the third battery cell sub-piece 121 includes a third battery cell 1211, and the fourth battery cell sub-piece 121 includes a fourth battery cell 1211, the first battery cell 1211, the second battery cell 1211, the third battery cell 1211 and the fourth battery cell 1211 are all located on the side of the battery cell assembly 12 away from the first connecting row 131.

[0107] The connecting assembly 13 includes a first output row 133, a second output row 134 and a third connecting row 135, the first output row 133, the second output row 134 and the third connecting row 135 are all arranged on the side of the battery cell assembly 12 away from the first connecting row 131.

[0108] The first battery cell sub-piece 121 and the second battery cell sub-piece 121 are connected in series through one of the first connecting rows 131, the third battery cell sub-piece 121 and the fourth battery cell sub-piece 121 are connected in series through one of the first connecting rows 131, one end of the first output row 133 is connected to the first battery cell 1211, one end of the second output row 134 is connected to the fourth battery cell 1211, one end of the third connecting row 135 is connected to the second battery cell 1211, and the other end of the third connecting row 135 is connected to the third battery cell 1211, so that each battery cell sub-piece 121 forms a complete circuit through reasonable series connection; wherein, the first output row 133 and the second output row 134 provide positive and negative outputs, thereby completing the power transmission of the battery module 1.

[0109] It can be understood that the first connecting row 131, the second connecting row 132 and the third connecting row 135 are matched to realize flexible arrangement and combination of the battery cell 1211, so that different capacity or voltage requirements can be met, the standardization degree of the production process is improved, the manufacturing cost is reduced, and the production efficiency is improved.

[0110] The utility model embodiment provides a kind of electric equipment, and the electric equipment includes the battery module described in any of the above embodiments.

[0111] It can be understood that the battery module has been described in detail in the above embodiments, and will not be repeated here.

[0112] The electric equipment includes battery module, and the battery module is used as the power supply of electric equipment, therefore, the electric equipment also has the advantages of the above battery module, so as to help simplify the overall structure of electric equipment;The electric equipment can be a car, an aircraft, a mechanical production device, etc.

[0113] The embodiments of the utility model are described in detail above, and the principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment is only used to help understand the method and core idea of the utility model;At the same time, for those skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will be changed, and the above description should not be understood as the limitation of the utility model.

Claims

1. A battery module, characterized by, The battery module comprises: a cross-connection aluminum row; a cell assembly comprising at least two cell sub-assemblies arranged at intervals along a first direction, each of the cell sub-assemblies comprising a plurality of cells arranged at intervals along a second direction; a connection assembly arranged on one side of the cell assembly, the connection assembly comprising a plurality of first connection rows and a plurality of second connection rows, the first connection rows being used for connecting two adjacent cell sub-assemblies, and the second connection rows being used for connecting two adjacent cells; wherein one end of the first connection row is directly connected to a cell in one of the cell sub-assemblies, and the other end of the first connection row is directly connected to a cell in the other adjacent cell sub-assembly.

2. The battery module of claim 1, wherein, The first connection row comprises a connection main body and a plurality of connection sub-assemblies, one of the connection sub-assemblies corresponding to one of the cell sub-assemblies, one end of the connection sub-assembly being connected to the connection main body, and the other end of the connection sub-assembly being directly connected to the cell in the cell sub-assembly.

3. The battery module of claim 2, wherein, A plurality of adjacent cells in any of the cell sub-assemblies form a cell group. The battery module further comprises a monitoring assembly, the monitoring assembly comprising a plurality of first sensors, one of the first sensors corresponding to one of the cell groups, and the first sensor being arranged on the top of any of the cells in the cell group. The first sensor is used to obtain first working data of the cell, and the first working data comprises temperature data.

4. The battery module of claim 3, wherein, The monitoring assembly further comprises a heat-conducting part arranged between the first sensor and the cell assembly, one end of the heat-conducting part being in contact with the cell, and the other end of the heat-conducting part being in contact with the first sensor.

5. The battery module of claim 3, wherein, The monitoring assembly comprises a plurality of mounting brackets, one of the mounting brackets corresponding to one of the first sensors, and the mounting bracket being arranged on the top of the cell sub-assembly. The mounting bracket comprises a first accommodating groove in communication with the cell, and the first sensor is arranged in the first accommodating groove.

6. The battery module of claim 5, wherein, The monitoring assembly further comprises a plurality of mounting plates, one of the mounting plates corresponding to one of the cell sub-assemblies, the mounting plate being arranged on the top of the cell sub-assembly, and the mounting plate being provided with a plurality of first mounting grooves, one of the first mounting grooves corresponding to one of the mounting brackets. The mounting bracket is arranged in the first mounting groove, and the mounting bracket is fixedly connected to the mounting plate.

7. The battery module of claim 6, wherein, The mounting bracket comprises a base and a protruding part, the base being arranged between the mounting plate and the cell assembly, the protruding part extending from the base towards the first mounting groove, the protruding part being arranged in the first mounting groove, and the protruding part comprising the first accommodating groove. The base is fixedly connected to the mounting plate, and the protruding part is arranged at intervals with the inner wall of the first mounting groove.

8. The battery module of claim 7, wherein, The mounting plate is provided with a first hot riveting hole, and the base is provided with a first hot riveting column, the first hot riveting column corresponding to the first hot riveting hole, and the first hot riveting column being inserted into the first hot riveting hole.

9. The battery module of claim 6, wherein, The monitoring assembly further comprises: a transmission port arranged on the other side of the cell assembly. A collection wire harness is arranged on the side of the mounting plate away from the battery cell subassembly, and the collection wire harness includes a plurality of first collection wires and a plurality of second collection wires. One end of one of the first collection wires corresponds to and is connected to one of the first sensors, and the other end of the first collection wire is connected to the transmission port. One end of one of the second collection wires corresponds to and is connected to one of the connection subassemblies, and the other end of the second collection wire is connected to the transmission port of the monitoring assembly. The second collection wire is used to obtain second working data of the battery cell, and the second working data includes voltage data.

10. The battery module of claim 9, wherein, The second connection row includes a plurality of connection pieces. One of the connection pieces is located between two adjacent battery cells, and one end of the connection piece is connected to one of the battery cells, and the other end of the connection piece is connected to another of the battery cells. The mounting plate is provided with a plurality of second mounting grooves. The second mounting grooves are arranged on both sides of the collection wire harness, and one of the second mounting grooves corresponds to one of the connection pieces. The connection piece is arranged in the second mounting groove. The collection wire harness further includes a plurality of third collection wires. One end of one of the third collection wires corresponds to and is connected to one of the connection pieces, and the other end of the third collection wire is connected to the transmission port of the monitoring assembly. The third collection wire is used to obtain second working data of the battery cell, and the second working data includes voltage data.

11. The battery module of claim 10, wherein, The mounting plate is provided with a plurality of second riveting columns, and the connection piece is provided with a plurality of second riveting holes. One of the second riveting columns corresponds to one of the second riveting holes, and the second riveting column is inserted into the second riveting hole.

12. The battery module of claim 10, wherein, The monitoring assembly includes a plurality of nickel pieces. One of the nickel pieces corresponds to one of the connection subassemblies, and one end of the nickel piece is fixedly connected to the connection subassembly. The other end of the nickel piece is fixedly connected to the second collection wire. The connection subassembly is provided with a second accommodating groove, and at least part of the nickel pieces are arranged in the second accommodating groove.

13. An electrical device, characterized by The battery module includes any one of the battery modules according to claims 1 to 12.

Images