Integrated busbar assembly and battery module

Abstract

The utility model provides an integrated busbar assembly and a battery module. The integrated busbar assembly comprises a circuit board which is provided with a first avoiding opening; the electric connection structure is connected with the circuit board, the electric connection structure comprises an electric connection sheet arranged on the circuit board, the electric connection sheet is provided with an electric connection part, and the electric connection part is arranged opposite to the first avoiding opening; and the conductive piece is electrically connected with the electric connecting piece and the circuit board respectively, and the conductive piece is provided with a through hole. According to the integrated busbar assembly, the structure of the integrated busbar assembly is reasonably arranged, the through holes of the conductive parts can buffer and remove the impact force of the expansive force of the battery cells on the connecting positions of the conductive parts and the electric connecting pieces and buffer and remove the impact force of the expansive force of the battery cells on the connecting positions of the conductive parts and the circuit board, the connecting positions of the conductive parts and the electric connecting pieces cannot be broken, and the service life of the integrated busbar assembly is prolonged. Similarly, the joint of the conductive piece and the circuit board cannot be broken, and effective electric connection of the battery cell, the electric connecting piece and the circuit board can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage batteries, in particular to an integrated busbar assembly and a battery module. BACKGROUND

[0002] In the related art, an integrated busbar (CCS, Cells Contact System) includes an electrical connection sheet and a circuit board. The electrical connection sheet is directly welded to the circuit board. The electrical connection sheet is used to electrically connect with the electrode part of a battery cell. The working parameters (such as voltage parameters) of the battery cell can be obtained through the integrated busbar.

[0003] During the charging and discharging cycle of the battery cell, the battery cell will continuously expand due to internal chemical reactions and physical changes of the battery cell. The expansion of the battery cell will cause the welding part of the electrical connection sheet and the circuit board to crack, resulting in the inability to collect the working parameters of the battery cell and the inability to ensure the safety and reliability of the use of the battery cell. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to at least solve one of the technical problems existing in the prior art or the related art.

[0005] To this end, the first aspect of the present application provides an integrated busbar assembly.

[0006] The second aspect of the present application provides a battery module.

[0007] Therefore, the first aspect of the present application provides an integrated busbar assembly, which comprises a circuit board provided with a first avoiding opening; an electrical connection structure connected with the circuit board, the electrical connection structure comprising an electrical connection sheet provided on the circuit board, the electrical connection sheet having an electrical connection part, the electrical connection part being arranged opposite to the first avoiding opening; and a conductive piece electrically connected with the electrical connection sheet and the circuit board, the conductive piece being provided with a through hole.

[0008] The integrated busbar assembly provided by the present application is used in a battery module, the battery module comprising battery cells, the integrated busbar assembly being used in cooperation with the battery cells, the integrated busbar assembly comprising a circuit board and an electrical connection structure connected with the circuit board. The electrical connection structure comprises an electrical connection sheet and a conductive piece.

[0009] The integrated busbar assembly is located on one side of the battery cell. The circuit board is provided with a first avoiding opening. The electrical connection sheet is provided on the circuit board, and the electrical connection sheet has an electrical connection part arranged opposite to the first avoiding opening. The electrode part of the battery cell can be electrically connected with the electrical connection part through the first avoiding opening. It can be understood that one electrical connection sheet is connected with two battery cells to meet the use requirement of series connection of multiple battery cells.

[0010] The conductive piece is electrically connected with the electrically connecting piece and the circuit board, that is, the conductive piece is electrically connected with the electrically connecting piece, and the conductive piece is also electrically connected with the circuit board. The conductive piece is provided with a through hole, wherein the through hole penetrates through two end faces of the conductive piece along the thickness direction of the conductive piece. The through hole can induce the load energy to be concentrated and dissipated around the hole, and the through hole can guide the energy to be concentrated and dissipated at the through hole during the impact process, so as to avoid damage to the connection between the conductive piece and the electrically connecting piece and to the connection between the conductive piece and the circuit board.

[0011] In this way, during the charging and discharging cycle of the battery cell, the battery cell will continuously expand due to the internal chemical reaction and physical change of the battery cell. The through hole of the conductive piece can buffer and release the impact force of the expansion force of the battery cell on the connection between the conductive piece and the electrically connecting piece, and the impact force of the expansion force of the battery cell on the connection between the conductive piece and the circuit board. The connection between the conductive piece and the electrically connecting piece will not be broken, and the connection between the conductive piece and the circuit board will also not be broken. The effective electrical connection between the battery cell, the electrically connecting piece and the circuit board can be ensured, so that the working parameters (such as voltage parameters) of the battery cell can still be effectively detected, the collection of the working parameters of the battery cell will not be interrupted, and the safety and reliability of the battery module can be ensured.

[0012] According to the integrated busbar assembly provided in the application, the following additional technical features can also be provided.

[0013] In some technical solutions, the conductive piece and the electrically connecting piece are located on the same side of the circuit board. The conductive piece has a first end portion and a second end portion. Along the thickness direction of the circuit board, the first end portion is stacked on one side of the electrically connecting piece and is electrically connected with the electrically connecting piece, and the second end portion is electrically connected with the circuit board.

[0014] In this technical solution, the cooperation structure of the conductive piece, the electrically connecting piece and the circuit board is further limited.

[0015] The conductive piece and the electrically connecting piece are located on the same side of the circuit board.

[0016] The conductive piece has a first end portion and a second end portion.

[0017] The first end portion is used for connecting with the electrically connecting piece. Specifically, along the thickness direction of the circuit board, the first end portion is stacked on one side of the electrically connecting piece, and the first end portion is electrically connected with the electrically connecting piece. This arrangement increases the contact area of the conductive piece and the electrically connecting piece, which is beneficial to enhancing the stability and reliability of the connection between the conductive piece and the electrically connecting piece.

[0018] The second end portion is used for connecting with the circuit board. Since the conductive piece and the electrically connecting piece are located on the same side of the circuit board, the second end portion is located on one side of the electrically connecting piece, and the second end portion is electrically connected with the circuit board. This arrangement increases the contact area of the conductive piece and the circuit board, which is beneficial to enhancing the stability and reliability of the connection between the conductive piece and the circuit board.

[0019] Meanwhile, the structure is convenient to process, can simplify the processing difficulty of the integrated busbar assembly, is conducive to improving the processing efficiency of the integrated busbar assembly, and is conducive to reducing the processing cost of the integrated busbar assembly.

[0020] In some technical solutions, optionally, along the thickness direction perpendicular to the circuit board, the second end portion is located on one side of the electrically-conductive piece, and the conductive member is arranged to be bent at the portion between the first end portion and the second end portion.

[0021] In the technical solution, the structure of the conductive member is further limited.

[0022] Along the thickness direction perpendicular to the circuit board, the second end portion is located on one side of the electrically-conductive piece, that is, the first end portion is stacked on one side of the electrically-conductive piece, and the second end portion is located on one side of the circuit board in the direction perpendicular to the electrically-conductive piece to the circuit board. That is, the second end portion is arranged to be staggered with the electrically-conductive piece, the electrically-conductive piece does not interfere with the assembly of the second end portion and the circuit board, which can simplify the assembly difficulty of the conductive member and the electrically-conductive piece and the circuit board, is conducive to improving the processing efficiency of the integrated busbar assembly, and is conducive to reducing the processing cost of the integrated busbar assembly.

[0023] The electrically-conductive piece is stacked on one side of the circuit board, and the electrically-conductive piece has a certain thickness, resulting in a height difference at the connection between the electrically-conductive piece and the circuit board. By arranging the structure of the conductive member, the conductive member is arranged to be bent at the portion between the first end portion and the second end portion, that is, the portion of the conductive member arranged to be bent can compensate for the height difference between the first end portion and the second end portion, so that the conductive member can effectively transition at the connection between the electrically-conductive piece and the circuit board. When an external force acts on the conductive member, the pulling force on the connection between the first end portion and the electrically-conductive piece can be reduced, and the pulling force on the connection between the second end portion and the circuit board can be reduced.

[0024] Meanwhile, the conductive member is arranged to be bent at the portion between the first end portion and the second end portion, the load can be transmitted through the portion of the conductive member arranged to be bent, and the portion of the conductive member arranged to be bent can absorb the impact capacity. In this way, the direct stress at the first end portion and the second end portion can be reduced, the rigid area of the first end portion and the second end portion can be protected, the connection between the first end portion and the electrically-conductive piece can be prevented from being damaged, and the connection between the second end portion and the circuit board can be prevented from being damaged, further reducing the probability of fracture at the connection between the conductive member and the electrically-conductive piece and further reducing the probability of fracture at the connection between the conductive member and the circuit board, which can ensure the effective electrical connection of the battery cell, the electrically-conductive piece and the circuit board, and provide reliable structural support for ensuring continuous and effective detection of the working parameters of the battery cell.

[0025] In some technical solutions, optionally, at least a portion of the through hole is located in the region of the conductive member arranged to be bent.

[0026] In the technical solution, the position of the through hole is further limited. At least a part of the through hole is located in the region where the conductive piece is arranged to be bent, that is, a part of the through hole is located in the region where the conductive piece is arranged to be bent, or the entire through hole is located in the region where the conductive piece is arranged to be bent. The through hole cooperates with the region where the conductive piece is arranged to be bent to reduce the direct stress at the first end and the second end in multiple ways, protect the rigid regions of the first end and the second end, avoid damage to the connection between the first end and the electrical connecting piece, and avoid damage to the connection between the second end and the circuit board.

[0027] At the same time, the structure is arranged to meet the use requirements of electrical connection between the conductive piece and the electrical connecting piece and the circuit board, and to meet the use requirements of arranging the through hole, while being conducive to reducing the size of the conductive piece and facilitating the wiring of the circuit board.

[0028] In some technical solutions, optionally, the shape of the region where the conductive piece is arranged to be bent includes any one or a combination thereof: a tooth shape, a wave shape, and an arch bridge shape.

[0029] In the technical solution, the shape of the region where the conductive piece is arranged to be bent is further limited.

[0030] Specifically, the shape of the region where the conductive piece is arranged to be bent includes any one or a combination thereof: a tooth shape, a wave shape, and an arch bridge shape.

[0031] This arrangement allows the load to be transmitted through the region where the conductive piece is arranged to be bent, and the region where the conductive piece is arranged to be bent can absorb the impact capacity, so as to reduce the direct stress at the first end and the second end and protect the rigid regions of the first end and the second end.

[0032] In some technical solutions, optionally, along the thickness direction of the circuit board, the electrical connecting piece is located between the circuit board and the first end.

[0033] In the technical solution, the cooperation structure of the electrical connecting piece, the circuit board, and the first end of the conductive piece is further limited, so that along the thickness direction of the circuit board, the electrical connecting piece is located between the circuit board and the first end of the conductive piece. This arrangement allows the first end of the conductive piece to be located above the electrical connecting piece, which facilitates the assembly of the electrical connecting piece and the conductive piece. Since the assembly difficulty of the conductive piece and the electrical connecting piece is reduced, the assembly efficiency of the integrated busbar assembly is improved, and the production cost of the integrated busbar assembly is reduced. At the same time, this structure facilitates the operator to observe the connection of the conductive piece, the electrical connecting piece, and the circuit board, and provides structural support for reducing the difficulty of subsequent maintenance and maintenance of the integrated busbar assembly.

[0034] In some technical solutions, optionally, the number of through holes is multiple, and the multiple through holes are arranged at intervals.

[0035] In the technical solution, the number and arrangement structure of the through holes are further limited.

[0036] The number of the through holes is multiple, and the multiple through holes are arranged at intervals. This arrangement can increase the arrangement position and arrangement area of the multiple through holes, and is beneficial to further reduce the impact force of the expansion force of the battery cell on the connection between the conductive member and the electrically connecting sheet and the impact force of the expansion force of the battery cell on the connection between the conductive member and the circuit board.

[0037] In some technical solutions, optionally, a cross section of the conductive member is taken along a direction perpendicular to the thickness direction of the conductive member, and in the cross section, the shape of an area enclosed by a contour line of the through hole includes any one or a combination of the following: a rectangle, an X shape, and a Z shape.

[0038] In the technical solution, the structure of the through hole is limited, a cross section of the conductive member is taken along a direction perpendicular to the thickness direction of the conductive member, and in the cross section, the shape of an area enclosed by a contour line of a hole wall of the through hole includes any one or a combination of the following: a rectangle, an X shape, and a Z shape.

[0039] This arrangement meets the requirement that the through hole deforms preferentially during the impact process, can guide the energy to be concentrated and dissipated at the through hole, and avoids damage to the connection between the conductive member and the electrically connecting sheet and damage to the connection between the conductive member and the circuit board.

[0040] In some technical solutions, optionally, the integrated busbar assembly further includes a temperature sensor, the temperature sensor and the electrically connecting sheet are located on the same side of the circuit board, the electrically connecting sheet is provided with a second avoiding opening, the temperature sensor is arranged in the second avoiding opening, and the temperature sensor is electrically connected with the circuit board.

[0041] In the technical solution, the structure of the integrated busbar assembly is further limited, so that the integrated busbar assembly further includes a temperature sensor. The temperature sensor is used to obtain the temperature of the battery cell, and provides data support for ensuring the safety and reliability of the battery module.

[0042] The temperature sensor is electrically connected with the circuit board, and the temperature sensor and the electrically connecting sheet are located on the same side of the circuit board. The electrically connecting sheet is provided with a second avoiding opening, the temperature sensor is arranged in the second avoiding opening, and the temperature sensor is electrically connected with the circuit board. That is, the opening wall of the second avoiding opening surrounds the temperature sensor, the second avoiding opening is used to avoid the temperature sensor, and the electrically connecting sheet does not interfere with the temperature sensor, thereby providing structural support for assembling the temperature sensor and the circuit board.

[0043] It can be understood that the temperature sensor and the electrically connecting sheet are located on the same side of the circuit board, the temperature sensor is arranged in the second avoiding opening, so that the connection positions of the temperature sensor, the conductive member, the electrically connecting sheet, and the circuit board are relatively concentrated, which is beneficial to simplify the wiring structure of the circuit board and facilitate the assembly of the temperature sensor, the conductive member, the electrically connecting sheet, and the circuit board.

[0044] In some embodiments, the number of the electric connection structures and the number of the first avoiding openings are both plural, each electric connection part is arranged opposite to one first avoiding opening; the plural electric connection structures include a first electric connection structure and a second electric connection structure, the first electric connection structure is located at the edge of the circuit board, and the second electric connection structure is located in the area surrounded by the edge of the circuit board; in the first electric connection structure, the number of the electric connection parts is one, and a part of the electric connection sheet extends out of the edge of the circuit board; in the second electric connection structure, the number of the electric connection parts is two, and the conductive part is located between the two electric connection parts.

[0045] In this embodiment, the structure of the integrated busbar assembly is further limited.

[0046] The number of the electric connection structures and the number of the first avoiding openings are both plural, that is, the number of the electric connection structures is plural, the number of the first avoiding openings is plural, each electric connection part is arranged opposite to one first avoiding opening, and the use requirement that each electric connection part can be electrically connected with the electrode part of the battery cell is met.

[0047] The types of the plural electric connection structures are divided, and the plural electric connection structures include a first electric connection structure and a second electric connection structure.

[0048] The first electric connection structure and the second electric connection structure are arranged at different positions, and the number of the electric connection parts included in the first electric connection structure and the second electric connection structure is different.

[0049] The first electric connection structure is located at the edge of the circuit board, and the second electric connection structure is located in the area surrounded by the edge of the circuit board. The first electric connection structure includes one electric connection part, and a part of the electric connection sheet of the first electric connection structure extends out of the edge of the circuit board. The second electric connection structure includes two electric connection parts, and the conductive part is located between the two electric connection parts.

[0050] This arrangement can meet the use requirement that the integrated busbar assembly is electrically connected with the plural matrix-arranged battery cells.

[0051] It can be understood that the first electric connection structure and the second electric connection structure both include an electric connection sheet and a conductive part, and can meet the use requirement that the working parameters of the plural battery cells are effectively detected.

[0052] In some embodiments, the integrated busbar assembly further includes: a connector plug-in arranged at the edge of the circuit board, and the connector plug-in is electrically connected with the circuit board.

[0053] In this embodiment, the integrated busbar assembly further includes a connector plug-in, the connector plug-in is arranged at the edge of the circuit board, and the connector plug-in is electrically connected with the circuit board. The connector plug-in is used to be electrically connected with an external device, and can meet the use requirement that the circuit board and the external device perform data interaction.

[0054] In some embodiments, the circuit board is a printed circuit board.

[0055] In this embodiment, the circuit board is a printed circuit board, which serves as a mounting carrier of the electrical connection structure and has the function of mounting and fixing the electrical connection structure. The printed circuit board has the characteristic of high structural strength, so that the device for supporting the electrical connection structure, such as a support, can be omitted, which is conducive to reducing the production cost of the integrated busbar assembly.

[0056] The second aspect of the present application provides a battery module, comprising: a plurality of battery cells, each battery cell having two electrode portions; and the integrated busbar assembly as in the first aspect, the plurality of battery cells being located on the same side of the integrated busbar assembly, and each electrode portion being electrically connected to one electrical connection portion.

[0057] The battery module provided by the present application comprises a plurality of battery cells and an integrated busbar assembly, the plurality of battery cells being located on the same side of the integrated busbar assembly, and each electrode portion being electrically connected to one electrical connection portion.

[0058] The battery module of the present application has all the beneficial effects of the integrated busbar assembly as in the first aspect, which will not be described one by one.

[0059] Additional aspects and advantages of the present application will become apparent from the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0060] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0061] Figure 1 An exploded view of a battery module of one embodiment of the present application is shown;

[0062] Figure 2 A structural schematic view of an integrated busbar assembly of one embodiment of the present application is shown;

[0063] Figure 3 A structural schematic view of a first electrical connection structure and a circuit board of one embodiment of the present application is shown;

[0064] Figure 4 A structural schematic view of a second electrical connection structure of one embodiment of the present application is shown;

[0065] Figure 5 A structural schematic view of a conductive member of a first embodiment of the present application is shown;

[0066] Figure 6 A structural schematic view of a conductive member of a second embodiment of the present application is shown;

[0067] Figure 7 A structural schematic diagram of a conductive piece of a third embodiment of the application is shown.

[0068] wherein, Figures 1 to 7 The correspondence between the reference signs in the drawings and the component names is as follows:

[0069] 10 integrated busbar assembly, 100 circuit board, 110 first avoiding opening, 200 electrical connection structure, 200a first electrical connection structure, 200b second electrical connection structure, 210 electrical connection sheet, 212 electrical connection part, 214 second avoiding opening, 220 conductive piece, 222 through hole, 224 first end part, 226 second end part, 228 region of bending arrangement, 300 temperature sensor, 400 connector plug-in, 50 battery module, 500 battery cell, 510 electrode part. DETAILED DESCRIPTION

[0070] In order to enable a more clear understanding of the above-mentioned objects, features and advantages of the application, the application will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

[0071] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the application, however, the application can also be implemented in other ways different from those described herein, therefore, the protection scope of the application is not limited by the specific embodiments disclosed below.

[0072] The following refers to Figures 1 to 7 An integrated busbar assembly 10 and a battery module 50 according to some embodiments of the application are described.

[0073] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 An integrated busbar assembly 10 according to some embodiments of the application includes a circuit board 100 and an electrical connection structure 200, and the electrical connection structure 200 is connected with the circuit board 100.

[0074] The circuit board 100 is provided with a first avoiding opening 110.

[0075] The electrical connection structure 200 includes an electrical connection sheet 210 and a conductive piece 220.

[0076] The electrical connection sheet 210 is arranged on the circuit board 100, and the electrical connection sheet 210 has an electrical connection part 212.

[0077] The electrical connection part 212 is arranged opposite to the first avoiding opening 110.

[0078] The conductive piece 220 is electrically connected with the electrically connecting sheet 210 and the circuit board 100 respectively.

[0079] The conductive piece 220 is provided with a through hole 222.

[0080] The integrated busbar assembly 10 provided by the present application is used for a battery module 50 including battery cells 500, and is used for cooperating with the battery cells 500. The integrated busbar assembly 10 includes a circuit board 100 and an electrically connecting structure 200 connected with the circuit board 100. The electrically connecting structure 200 includes an electrically connecting sheet 210 and a conductive piece 220.

[0081] The integrated busbar assembly 10 is located at one side of the battery cells 500. The circuit board 100 is provided with a first avoiding opening 110. The electrically connecting sheet 210 is arranged on the circuit board 100, and has an electrically connecting part 212 arranged opposite to the first avoiding opening 110. The electrode part 510 of the battery cell 500 can be electrically connected with the electrically connecting part 212 through the first avoiding opening 110. It can be understood that one electrically connecting sheet 210 is connected with two battery cells 500 to meet the use requirement of connecting the battery cells 500 in series.

[0082] The conductive piece 220 is electrically connected with the electrically connecting sheet 210 and the circuit board 100 respectively, that is, the conductive piece 220 is electrically connected with the electrically connecting sheet 210, and the conductive piece 220 is also electrically connected with the circuit board 100. The conductive piece 220 is provided with a through hole 222, wherein the through hole 222 penetrates through two end faces of the conductive piece 220 along the thickness direction of the conductive piece 220. The through hole 222 can induce the load energy to be concentrated and dissipated around the hole, and preferentially deforms at the through hole 222 during the impact process, so as to guide the energy to be concentrated and dissipated at the through hole 222, and avoid the connection between the conductive piece 220 and the electrically connecting sheet 210 from being damaged, and avoid the connection between the conductive piece 220 and the circuit board 100 from being damaged.

[0083] In this way, during the charging and discharging cycle use of the battery cells 500, the battery cells 500 will continuously expand due to the internal chemical reaction and physical change of the battery cells 500. The through hole 222 of the conductive piece 220 can buffer and unload the impact force of the expansion force of the battery cells 500 on the connection between the conductive piece 220 and the electrically connecting sheet 210, and buffer and unload the impact force of the expansion force of the battery cells 500 on the connection between the conductive piece 220 and the circuit board 100. The connection between the conductive piece 220 and the electrically connecting sheet 210 will not be broken, and the connection between the conductive piece 220 and the circuit board 100 will also not be broken. The effective electrical connection of the battery cells 500, the electrically connecting sheet 210 and the circuit board 100 can be ensured, so that the working parameters (such as voltage parameters) of the battery cells 500 can still be effectively detected, the collection of the working parameters of the battery cells 500 will not be interrupted, and the safety and reliability of the use of the battery module 50 can be ensured.

[0084] The embodiment provides an integrated busbar assembly 10, in addition to the technical features of the above embodiment, and further comprises the following technical features, as shown in Figure 3 and Figure 4 The conductive piece 220 and the electrically connecting piece 210 are located on the same side of the circuit board 100.

[0085] The conductive piece 220 has a first end 224 and a second end 226.

[0086] The first end 224 is stacked on one side of the electrically connecting piece 210 in the thickness direction of the circuit board 100 and is electrically connected to the electrically connecting piece 210.

[0087] The second end 226 is electrically connected to the circuit board 100.

[0088] In the embodiment, the matching structure of the conductive piece 220, the electrically connecting piece 210 and the circuit board 100 is further limited.

[0089] The conductive piece 220 and the electrically connecting piece 210 are located on the same side of the circuit board 100.

[0090] The conductive piece 220 has a first end 224 and a second end 226.

[0091] The first end 224 is used for connecting the electrically connecting piece 210. Specifically, the first end 224 is stacked on one side of the electrically connecting piece 210 in the thickness direction of the circuit board 100, and the first end 224 is electrically connected to the electrically connecting piece 210. The arrangement increases the contact area of the conductive piece 220 and the electrically connecting piece 210, and is beneficial to enhancing the stability and reliability of the connection between the conductive piece 220 and the electrically connecting piece 210.

[0092] The second end 226 is used for connecting the circuit board 100. Since the conductive piece 220 and the electrically connecting piece 210 are located on the same side of the circuit board 100, the second end 226 is located on one side of the electrically connecting piece 210, and the second end 226 is electrically connected to the circuit board 100. The arrangement increases the contact area of the conductive piece 220 and the circuit board 100, and is beneficial to enhancing the stability and reliability of the connection between the conductive piece 220 and the circuit board 100.

[0093] Meanwhile, the structure has the advantages of convenient processing, can simplify the processing difficulty of the integrated busbar assembly 10, is beneficial to improving the processing efficiency of the integrated busbar assembly 10, and is beneficial to reducing the processing cost of the integrated busbar assembly 10.

[0094] The embodiment provides the integrated busbar assembly 10, in addition to the technical features of the above embodiment, and further comprises the following technical features: the second end portion 226 is located on one side of the electrically-conductive piece 210 in the direction perpendicular to the thickness of the circuit board 100, and the conductive member 220 is arranged in a bent manner in the portion between the first end portion 224 and the second end portion 226.

[0095] In the embodiment, the structure of the conductive member 220 is further limited.

[0096] The second end portion 226 is located on one side of the electrically-conductive piece 210 in the direction perpendicular to the thickness of the circuit board 100, that is, the first end portion 224 is stacked on one side of the electrically-conductive piece 210, and the second end portion 226 is located on one side of the circuit board 100 in the direction perpendicular to the electrically-conductive piece 210 to the circuit board 100. That is, the second end portion 226 is arranged in a staggered manner with the electrically-conductive piece 210, the electrically-conductive piece 210 does not interfere with the assembly of the second end portion 226 and the circuit board 100, the assembly difficulty of the conductive member 220 and the electrically-conductive piece 210 and the circuit board 100 can be simplified, the processing efficiency of the integrated busbar assembly 10 is improved, and the processing cost of the integrated busbar assembly 10 is reduced.

[0097] The electrically-conductive piece 210 is stacked on one side of the circuit board 100, the electrically-conductive piece 210 has a certain thickness, so that the connection part of the electrically-conductive piece 210 and the circuit board 100 has a height difference, by setting the structure of the conductive member 220, the conductive member 220 is arranged in a bent manner in the portion between the first end portion 224 and the second end portion 226, that is, the portion arranged in a bent manner of the conductive member 220 can compensate for the height difference between the first end portion 224 and the second end portion 226, so that the conductive member 220 can be effectively transitioned at the connection part of the electrically-conductive piece 210 and the circuit board 100. When external force acts on the conductive member 220, the pulling force on the connection part of the first end portion 224 and the electrically-conductive piece 210 can be reduced, and the pulling force on the connection part of the second end portion 226 and the circuit board 100 can be reduced.

[0098] Meanwhile, the load can be transmitted through the part of the conductive piece 220 bent arrangement, the part of the conductive piece 220 bent arrangement can absorb the impact capacity, so that the direct stress at the first end 224 and the second end 226 can be reduced, the rigid area of the first end 224 and the second end 226 can be protected, the connection between the first end 224 and the electrically connecting sheet 210 can be prevented from being damaged, and the connection between the second end 226 and the circuit board 100 can be prevented from being damaged, the probability of fracture at the connection between the conductive piece 220 and the electrically connecting sheet 210 can be further reduced, and the probability of fracture at the connection between the conductive piece 220 and the circuit board 100 can be further reduced, the effective electrical connection of the battery cell 500, the electrically connecting sheet 210 and the circuit board 100 can be ensured, and reliable structural support for ensuring continuous and effective detection of the working parameters of the battery cell 500 is provided.

[0099] The embodiment provides the integrated busbar assembly 10, in addition to the technical features of the above-mentioned embodiments, and further includes the following technical features: at least a part of the through hole 222 is located in the region 228 of the conductive piece 220 bent arrangement.

[0100] In the embodiment, the setting position of the through hole 222 is further limited. At least a part of the through hole 222 is located in the region 228 of the conductive piece 220 bent arrangement, that is, a part of the through hole 222 is located in the region 228 of the conductive piece 220 bent arrangement, or the through hole 222 is entirely located in the region 228 of the conductive piece 220 bent arrangement. The through hole 222 cooperates with the region 228 of the conductive piece 220 bent arrangement to reduce the direct stress at the first end 224 and the second end 226 in multiple ways, protect the rigid area of the first end 224 and the second end 226, prevent the connection between the first end 224 and the electrically connecting sheet 210 from being damaged, and prevent the connection between the second end 226 and the circuit board 100 from being damaged.

[0101] Meanwhile, the structure meets the use demand of electrical connection of the conductive piece 220, the electrically connecting sheet 210 and the circuit board 100, and the use demand of setting the through hole 222, and is beneficial to reducing the size of the conductive piece 220 and facilitating the wiring of the circuit board 100.

[0102] The embodiment provides the integrated busbar assembly 10, in addition to the technical features of the above-mentioned embodiments, and further includes the following technical features: the shape of the region 228 of the conductive piece 220 bent arrangement includes any one or a combination thereof: a tooth shape, a wave shape and an arch bridge shape.

[0103] In the embodiment, the shape of the region 228 of the conductive piece 220 bent arrangement is further limited.

[0104] Specifically, the shape of the region 228 where the conductive piece 220 is arranged to be bent includes any one or a combination of the following: a tooth shape, a wave shape, and an arch bridge shape.

[0105] This arrangement enables the load to be transmitted through the region 228 where the conductive piece 220 is arranged to be bent, and the region 228 where the conductive piece 220 is arranged to be bent can absorb the impact capacity, so that the direct force at the first end 224 and the second end 226 can be reduced, and the rigid regions of the first end 224 and the second end 226 are protected. Among them, as shown in Figure 3 、 Figure 5 、 Figure 6 and Figure 7 indicate that there are a plurality of solid lines at the region 228 where the conductive piece 220 is arranged to be bent, and the solid lines are at the indentations of the region 228 where the conductive piece 220 is arranged to be bent.

[0106] The embodiment provides an integrated busbar assembly 10, in addition to the technical features of the above-mentioned embodiments, the embodiment further includes the following technical features, as shown in Figure 4 indicate that along the thickness direction of the circuit board 100, the electrically conductive piece 210 is located between the circuit board 100 and the first end 224.

[0107] In this embodiment, the cooperation structure of the electrically conductive piece 210, the circuit board 100 and the first end 224 of the conductive piece 220 is further limited, so that along the thickness direction of the circuit board 100, the electrically conductive piece 210 is located between the circuit board 100 and the first end 224 of the conductive piece 220. This arrangement enables the first end 224 of the conductive piece 220 to be located above the electrically conductive piece 210, so that the assembly of the electrically conductive piece 210 and the conductive piece 220 is more convenient. Since the assembly difficulty of the conductive piece 220 and the electrically conductive piece 210 is reduced, the assembly efficiency of the integrated busbar assembly 10 is improved, and the production cost of the integrated busbar assembly 10 is reduced. At the same time, this structural arrangement is convenient for the operator to observe the connection of the conductive piece 220, the electrically conductive piece 210 and the circuit board 100, and provides structural support for reducing the difficulty of subsequent maintenance and maintenance of the integrated busbar assembly 10.

[0108] The embodiment provides an integrated busbar assembly 10, in addition to the technical features of the above-mentioned embodiments, the embodiment further includes the following technical features, the number of through holes 222 is a plurality of, and the plurality of through holes 222 are arranged at intervals.

[0109] In this embodiment, the number and arrangement structure of the through hole 222 are further limited.

[0110] The plurality of through holes 222 are arranged at intervals. This arrangement can increase the arrangement positions and arrangement area of the plurality of through holes 222, and is conducive to further reducing the impact force of the expansion force of the battery cell 500 on the connection between the conductive member 220 and the electrical connection sheet 210, and further reducing the impact force of the expansion force of the battery cell 500 on the connection between the conductive member 220 and the circuit board 100.

[0111] The integrated busbar assembly 10 provided in this embodiment further comprises the following technical features in addition to the technical features of the above-mentioned embodiments, as shown in Figure 5 、 Figure 6 and Figure 7 In a cross section of the conductive member 220 taken in a direction perpendicular to the thickness direction of the conductive member 220, the shape of the area enclosed by the contour line of the through hole 222 comprises any one or a combination of the following shapes: a rectangular shape, an X shape, and a Z shape.

[0112] In this embodiment, the structure defining the through hole 222 is configured such that, in a cross section of the conductive member 220 taken in a direction perpendicular to the thickness direction of the conductive member 220, the shape of the area enclosed by the contour line of the hole wall of the through hole 222 comprises any one or a combination of the following shapes: a rectangular shape, an X shape, and a Z shape.

[0113] This configuration allows the through hole 222 to deform preferentially during the impact process, and can guide the energy to be concentrated and dissipated at the through hole 222, thereby avoiding damage to the connection between the conductive member 220 and the electrical connection sheet 210, and avoiding damage to the connection between the conductive member 220 and the circuit board 100.

[0114] In other embodiments, the structure defining the through hole 222 is configured such that, in a cross section of the conductive member 220 taken in a direction perpendicular to the direction from the electrical connection sheet 210 to the circuit board 100, the shape of the area enclosed by the contour line of the hole wall of the through hole 222 further comprises any one or a combination of the following shapes: a Y shape, a K shape, a ring shape, and the like, which are not listed one by one here.

[0115] The integrated busbar assembly 10 provided in this embodiment further comprises the following technical features in addition to the technical features of the above-mentioned embodiments, as shown in Figure 2 、 Figure 3 and Figure 4 The integrated busbar assembly 10 further comprises a temperature sensor 300.

[0116] The temperature sensor 300 and the electrical connection sheet 210 are located on the same side of the circuit board 100.

[0117] The electrical connection sheet 210 is provided with a second avoiding opening 214.

[0118] The temperature sensor 300 is arranged at the second avoiding opening 214, and the temperature sensor 300 is electrically connected with the circuit board 100. In this embodiment, the structure of the integrated busbar assembly 10 is further limited, so that the integrated busbar assembly 10 further comprises the temperature sensor 300. The temperature sensor 300 is used to obtain the temperature of the battery cell 500, and provides data support for ensuring the safety and reliability of the battery module 50.

[0119] The temperature sensor 300 is electrically connected with the circuit board 100, and the temperature sensor 300 and the electrically connecting piece 210 are located at the same side of the circuit board 100. The electrically connecting piece 210 is provided with the second avoiding opening 214, and the temperature sensor 300 is arranged at the second avoiding opening 214, and the temperature sensor 300 is electrically connected with the circuit board 100. That is, the wall of the second avoiding opening 214 surrounds the temperature sensor 300, the second avoiding opening 214 is used to avoid the temperature sensor 300, and the electrically connecting piece 210 does not interfere with the temperature sensor 300, thereby providing structural support for assembling the temperature sensor 300 and the circuit board 100.

[0120] It can be understood that the temperature sensor 300 and the electrically connecting piece 210 are located at the same side of the circuit board 100, the temperature sensor 300 is arranged at the second avoiding opening 214, so that the connection positions of the temperature sensor 300, the conductive part 220, the electrically connecting piece 210 and the circuit board 100 are relatively concentrated, which is beneficial to simplify the wiring structure of the circuit board 100 and facilitate the assembly of the temperature sensor 300, the conductive part 220, the electrically connecting piece 210 and the circuit board 100.

[0121] The embodiment provides an integrated busbar assembly 10, in addition to the technical features of the above-mentioned embodiments, the embodiment further comprises the following technical features, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The plurality of electrically connecting structures 200 comprises a first electrically connecting structure 200a and a second electrically connecting structure 200b.

[0122] The number of the electrically connecting structure 200 and the first avoiding opening 110 is multiple.

[0123] Each electrically connecting part 212 is arranged opposite to one first avoiding opening 110.

[0124] The first electrically connecting structure 200a is located at the edge of the circuit board 100.

[0125] The second electrically connecting structure 200b is located in the region surrounded by the edge of the circuit board 100.

[0126] In the first electrically connecting structure 200a, the number of the electrically connecting part 212 is one, and a part of the electrically connecting piece 210 protrudes out of the edge of the circuit board 100.

[0127] In the second electric connection structure 200b, the number of the electric connection parts 212 is two, and the conductive part 220 is located between the two electric connection parts 212.

[0128] In this embodiment, the structure of the integrated busbar assembly 10 is further defined.

[0129] The number of the electric connection structures 200 and the first avoiding openings 110 is multiple, that is, the number of the electric connection structures 200 is multiple, and the number of the first avoiding openings 110 is multiple. Each electric connection part 212 is arranged opposite to one first avoiding opening 110, which meets the use requirement that each electric connection part 212 can be electrically connected with the electrode part 510 of the battery cell 500.

[0130] The types of the multiple electric connection structures 200 are divided, and the multiple electric connection structures 200 include the first electric connection structure 200a and the second electric connection structure 200b.

[0131] The setting positions of the first electric connection structure 200a and the second electric connection structure 200b are different, and the number of the electric connection parts 212 included in the first electric connection structure 200a and the second electric connection structure 200b is different.

[0132] The first electric connection structure 200a is located at the edge of the circuit board 100, and the second electric connection structure 200b is located in the area surrounded by the edge of the circuit board 100. The first electric connection structure 200a includes one electric connection part 212, and a part of the electric connection sheet 210 of the first electric connection structure 200a protrudes out of the edge of the circuit board 100. The second electric connection structure 200b includes two electric connection parts 212, and the conductive part 220 is located between the two electric connection parts 212.

[0133] This setting can meet the use requirement that the integrated busbar assembly 10 is electrically connected with the multiple matrix-arranged battery cells 500.

[0134] It can be understood that the first electric connection structure 200a and the second electric connection structure 200b both include the electric connection sheet 210 and the conductive part 220, which can meet the use requirement that the working parameters of the multiple battery cells 500 are effectively detected.

[0135] The embodiment provides an integrated busbar assembly 10, in addition to the technical features of the above-mentioned embodiments, the embodiment further includes the following technical features, such as Figure 1 and Figure 2 As shown in the drawings, the integrated busbar assembly 10 further includes a connector plug-in 400.

[0136] The connector plug-in 400 is arranged at the edge of the circuit board 100.

[0137] Connector plug 400 is electrically connected to circuit board 100.

[0138] In this embodiment, the integrated busbar assembly 10 further includes a connector plug 400, which is located at the edge of the circuit board 100 and electrically connected to the circuit board 100. The connector plug 400 is used for electrical connection with external devices, which can meet the usage requirements of data interaction between the circuit board 100 and external devices.

[0139] This embodiment provides an integrated busbar assembly 10. In addition to the technical features of the above embodiments, this embodiment further includes the following technical features: the circuit board 100 includes a printed circuit board.

[0140] In this embodiment, the circuit board 100 includes a printed circuit board, which serves as the mounting carrier for the electrical connection structure 200 and has the function of mounting and fixing the electrical connection structure 200. The printed circuit board has the characteristic of high structural strength, so the investment of components such as brackets to support the electrical connection structure 200 can be omitted, which is beneficial to reducing the production cost of the integrated busbar assembly 10.

[0141] In some other embodiments, circuit board 100 includes a flexible circuit board.

[0142] like Figure 1 and Figure 2 As shown, a battery module 50 according to some embodiments of this application includes a plurality of battery cells 500 and an integrated busbar assembly 10 in the first aspect.

[0143] Each cell 500 has two electrode sections 510.

[0144] Multiple battery cells 500 are located on the same side of the integrated busbar assembly 10.

[0145] Each electrode portion 510 is electrically connected to an electrical connection portion 212.

[0146] The battery module 50 provided in this application includes a plurality of battery cells 500 and an integrated busbar assembly 10. The plurality of battery cells 500 are located on the same side of the integrated busbar assembly 10, and each electrode portion 510 is electrically connected to an electrical connection portion 212.

[0147] The battery module 50 of this application includes the integrated busbar assembly 10 as described in any of the above embodiments, and therefore has all the beneficial effects of the integrated busbar assembly 10, which will not be described in detail here.

[0148] Exemplarily, in the present application, the integrated busbar assembly 10 comprises a circuit board 100, the circuit board 100 comprises a printed circuit board serving as a support and a circuit, and the electrically conductive piece 210 (for example, an aluminum bar) is welded on the printed circuit board, thereby increasing the overall strength of the integrated busbar assembly 10, facilitating the reduction of the parts of the integrated busbar assembly 10, and facilitating the reduction of the production cost of the integrated busbar assembly 10.

[0149] Exemplarily, the electrically conductive piece 220 (for example, a nickel piece) is electrically connected with the printed circuit board, and the electrically conductive piece 220 is connected with the electrically conductive piece 210, thereby meeting the use requirement of collecting the voltage of the battery cell 500 through the integrated busbar assembly 10. This setting ensures the effective electrical connection between the aluminum bar and the printed circuit board even if the battery cell 500 expands, and the voltage of the battery cell 500 can be collected.

[0150] Exemplarily, the battery cell 500 comprises two electrode parts 510, one of which is a positive electrode part and the other of which is a negative electrode part.

[0151] Exemplarily, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , the integrated busbar assembly 10 comprises a plurality of first electrically connecting structures 200a, a plurality of second electrically connecting structures 200b, a printed circuit board, a connector socket and a temperature sensor 300 (for example, an NTC (Negative Temperature Coefficient Sensor) temperature sensor). The first electrically connecting structure 200a comprises an electrically conductive piece 210 (for example, an outgoing aluminum bar) and an electrically conductive piece 220 (for example, a nickel piece). The second electrically connecting structure 200b comprises an electrically conductive piece 210 (for example, a series aluminum bar) and an electrically conductive piece 220 (for example, a nickel piece).

[0152] The integrated busbar assembly 10 is supported by the printed circuit board as a whole, the outgoing aluminum bar and the series aluminum bar are welded on the printed circuit board by means of tin soldering, any one of the nickel piece, the NTC temperature sensor and the connector plug-in 400 is connected with the circuit on the printed circuit board by means of welding, at the same time, the nickel piece of the first electrically connecting structure 200a is welded and connected with the outgoing aluminum bar, and the nickel piece of the second electrically connecting structure 200b is welded and connected with the series aluminum bar, thereby forming the overall structure of the integrated busbar assembly 10.

[0153] The series aluminum busbar and the outgoing aluminum busbar on the integrated busbar assembly 10 are connected to the positive and negative parts of the battery cell 500 by welding, so as to connect all the battery cells 500 in series. The NTC temperature sensor 300 detects the temperature of the battery cell 500 by collecting the temperature of the electric connection sheet 210. The voltage of the battery cell 500 is collected by collecting the voltage of the electric connection sheet 210 through the nickel sheet. All the collected information is transmitted to the BMS (Battery Management System) system through the connector plug-in 400, so as to monitor the battery cell 500.

[0154] The integrated busbar assembly 10 takes the printed circuit board as the support, so as to reduce the cost of mold opening and ensure the overall strength of the integrated busbar assembly 10. The nickel sheet is in the form of a middle opening (for example, a through hole 222 is arranged in the middle of the nickel sheet) (the middle opening form can be various, such as a square shape, a Z shape, etc.) and is welded to the electric connection sheet 210. Even if the welding part of the electric connection sheet 210 and the printed circuit board is cracked due to the expansion of the battery cell 500 in the later period, the nickel sheet can buffer the expansion of the battery cell 500 without being broken due to the middle opening, and the voltage collection information of the battery cell 500 will not be interrupted.

[0155] Exemplarily, the nickel sheet is in the middle opening, and the shape of the opening includes but is not limited to a Z shape and an X shape.

[0156] In the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connecting" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0157] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An integrated busbar assembly, characterized in that, include: A circuit board, wherein the circuit board is provided with a first clearance opening; An electrical connection structure is connected to the circuit board, and the electrical connection structure includes: An electrical connector is disposed on the circuit board, the electrical connector having an electrical connection portion, the electrical connection portion being disposed opposite to the first clearance opening; A conductive component is provided, which is electrically connected to the electrical connecting piece and the circuit board respectively, and the conductive component is provided with a through hole.

2. The integrated busbar assembly according to claim 1, characterized in that, The conductive element and the electrical connection piece are located on the same side of the circuit board; The conductive element has a first end and a second end. Along the thickness direction of the circuit board, the first end is stacked on one side of the electrical connector and electrically connected to the electrical connector, and the second end is electrically connected to the circuit board.

3. The integrated busbar assembly according to claim 2, characterized in that, Along the thickness direction perpendicular to the circuit board, the second end is located on one side of the electrical connector, and the conductive element is partially bent between the first end and the second end.

4. The integrated busbar assembly according to claim 3, characterized in that, At least a portion of the through hole is located in the area where the conductive element is bent. The shape of the area where the conductive element is bent includes any one or a combination of the following: toothed, wavy, and arched.

5. The integrated busbar assembly according to claim 2, characterized in that, Along the thickness direction of the circuit board, the electrical connector is located between the circuit board and the first end.

6. The integrated busbar assembly according to any one of claims 1 to 5, characterized in that, The number of through holes is multiple, and the multiple through holes are arranged at intervals.

7. The integrated busbar assembly according to any one of claims 1 to 5, characterized in that, The conductive element is cross-sectioned along a direction perpendicular to its thickness. The shape of the area enclosed by the outline of the through hole in the cross-section includes any one or a combination of the following: rectangular, X-shaped, and Z-shaped.

8. The integrated busbar assembly according to any one of claims 1 to 5, characterized in that, Also includes: A temperature sensor, wherein the temperature sensor and the electrical connector are located on the same side of the circuit board; The electrical connector has a second clearance opening, the temperature sensor is disposed in the second clearance opening, and the temperature sensor is electrically connected to the circuit board.

9. The integrated busbar assembly according to any one of claims 1 to 5, characterized in that, The number of electrical connection structures and the number of first clearance openings are both multiple, and each electrical connection part is arranged opposite to one of the first clearance openings; The plurality of electrical connection structures include a first electrical connection structure and a second electrical connection structure, wherein the first electrical connection structure is located at the edge of the circuit board and the second electrical connection structure is located within the area enclosed by the edge of the circuit board; In the first electrical connection structure, there is one electrical connection portion, and a portion of the electrical connection piece extends beyond the edge of the circuit board; In the second electrical connection structure, there are two electrical connection parts, and the conductive element is located between the two electrical connection parts.

10. The integrated busbar assembly according to any one of claims 1 to 5, characterized in that, Also includes: A connector plug is located at the edge of the circuit board and is electrically connected to the circuit board.

11. The integrated busbar assembly according to any one of claims 1 to 5, characterized in that, The circuit board includes a printed circuit board.

12. A battery module, characterized in that, include: Multiple battery cells, each of which has two electrode portions; and In any one of claims 1 to 11, the plurality of said cells are located on the same side of the integrated busbar assembly, and each of said electrode portions is electrically connected to one of said electrical connection portions.

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