Modular plastic support and integrated busbar

Abstract

The application provides a modular plastic support, which comprises a first output pole module, a second output pole module and a bus module, the first output pole module and the second output pole module are respectively spliced at two ends of the bus module, the bus module comprises a plurality of series modules, and the first output pole module and the second output pole module are respectively spliced with the series modules; the first output pole module comprises a first support, the first support is embedded with a first output pole conductive row and a first series conductive row, the second output pole module comprises a second support, the second support is embedded with one or two second series conductive rows and a second output pole conductive row, and the series module comprises a third support, the third support is embedded with two third series conductive rows; the first series conductive row, the second series conductive row and the third series conductive row are respectively used for electrically connecting two adjacent battery cells, and the first output pole conductive row and the second output pole conductive row are respectively electrically connected with an external circuit; and the application further provides an integrated busbar.

Description

Technical Field

[0001] This invention relates to the field of electronic and electrical technology, and in particular to a modular plastic bracket and integrated busbar. Background Technology

[0002] Currently, with the rapid development of new energy vehicles and energy storage industries, the requirements for power battery systems in terms of integration, lightweighting, cost control, and adaptability are increasing. The integrated busbar (CCS), as a key component within the battery module, undertakes the important functions of high-voltage series and parallel connection of battery cells, and the acquisition and transmission of voltage and temperature signals to the battery management system (BMS).

[0003] In existing technologies, integrated busbars typically include a plastic bracket, signal acquisition components (such as FPC, FFC, FDC or wire harness) and a bus. The plastic bracket and the busbar are generally fixed together by means of hot riveting, snap-fit ​​or adhesive bonding. The plastic brackets of existing integrated busbars are mostly customized one-piece plastic brackets.

[0004] However, while integrated plastic brackets are convenient for installation and disassembly, they have significant limitations: each plastic bracket typically only fits battery modules of a specific power or size, resulting in poor versatility. If the series-parallel ratio of the battery pack (i.e., module length or layout) changes, the entire mold for the plastic bracket must be redesigned and manufactured. Mold development not only involves high material and processing costs (such as steel, electrodes, and precision CNC machining), but also a lengthy design, trial, and modification cycle, significantly impacting the development efficiency and economics of integrated busbars. Summary of the Invention

[0005] The purpose of this invention is to provide a modular plastic bracket and integrated busbar, which aims to solve or at least partially solve the shortcomings of the above-mentioned background technology. It decomposes the traditional one-piece plastic bracket into multiple standardized modules that can be mass-produced. It can not only be applied to battery modules of the same model but also have good versatility, but also significantly reduce the mold investment cost of the plastic bracket, greatly shorten the R&D cycle of the integrated busbar, and improve production efficiency.

[0006] This invention provides a modular plastic bracket for use with an integrated busbar signal acquisition component to connect multiple battery cells of a battery module in series. The bracket includes a first output module, a second output module, and a busbar module. The first and second output modules are respectively spliced ​​at both ends of the busbar module along the length of the modular plastic bracket. The busbar module includes multiple sequentially detachable series modules. The first and second output modules are detachably spliced ​​with the series modules. The first output module includes a first bracket with a first output conductor and a first series conductor exposed on its surface. The second output module includes a second bracket with one or two second series conductors and a second output conductor exposed on its surface. The series module includes a third bracket with two third series conductors exposed on its surface. The first, second, and third series conductors are used to electrically connect the positive and negative terminals of two adjacent battery cells, respectively. The first and second output conductors are electrically connected to an external circuit.

[0007] Furthermore, the first output electrode busbar and the first series busbar are respectively embedded on the first support through a coating process, the second output electrode busbar and the second series busbar are respectively embedded on the second support through a coating process, and the third series busbar is embedded on the third support through a coating process.

[0008] Furthermore, the first and third supports, the second and third supports, and two adjacent third supports are detachably connected by mortise and tenon joints.

[0009] Furthermore, the mortise and tenon structure is a dovetail tenon, which includes a dovetail tenon and a mortise that mates with the dovetail tenon.

[0010] Furthermore, the first, second, and third supports are all made of hard plastic, and the angle θ between the tenon end and the tenon cheek of the dovetail tenon is 80°~83°.

[0011] Furthermore, the first, second, and third supports are all made of soft plastic, and the angle θ between the tenon end and the tenon cheek of the dovetail tenon is 75°~80°.

[0012] Furthermore, the first bracket has a first embedded part, a second embedded part, and a first connecting part connecting the first embedded part and the second embedded part. The first connecting part has a first clearance hole through which a pressure relief valve for avoiding the battery cell is opened. The first embedded part is embedded with a first output electrode conductive bus, and the second embedded part is embedded with a first series conductive bus.

[0013] Furthermore, the second bracket has a third embedding part, a fourth embedding part, and a second connecting part connecting the third embedding part and the fourth embedding part. The second connecting part has a second clearance hole through which a pressure relief valve for avoiding the battery cell is opened. When the number of second series conductive bars is one, the third embedding part has a second output electrode conductive bar embedded in it, and the fourth embedding part has a second series conductive bar embedded in it. When the number of second series conductive bars is two, the third embedding part has a second output electrode conductive bar embedded in it and a second series conductive bar embedded in it, and the fourth embedding part has a second series conductive bar embedded in it.

[0014] Furthermore, the third bracket has two fifth embedding portions and a third connecting portion connecting the two fifth embedding portions. The third connecting portion passes through a third clearance hole for avoiding the pressure relief valve of the battery cell. Each fifth embedding portion is fitted with a third series conductive busbar.

[0015] The present invention also provides an integrated busbar, including a signal acquisition component and the above-mentioned modular plastic bracket, wherein the signal acquisition component is mounted on the modular plastic bracket and the modular plastic bracket is electrically connected to the signal acquisition component.

[0016] This invention provides a modular plastic bracket that, through the cooperation of a first output electrode module, a second output electrode module, and multiple series modules, decomposes the traditional integrated plastic bracket into multiple standardized modules that can be mass-produced. This modularization of the plastic bracket allows operators to adjust the number of series modules and select one or two second output electrode modules based on the actual number of cell strings in the battery module. This not only makes it suitable for battery modules of the same model but with different string counts, demonstrating good versatility, but also significantly reduces the mold investment cost of the plastic bracket, greatly shortens the R&D cycle of the integrated busbar, and improves production efficiency. By embedding each conductive busbar onto its respective bracket, the bracket can tightly enclose the conductive busbar, forming a robust mechanical interlock, effectively preventing loosening and improving connection reliability. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the modular plastic support structure of the present invention. Figure 1 .

[0019] Figure 2 This is an exploded view of the modular plastic support structure of the present invention. Figure 2 .

[0020] Figure 3 for Figure 1 The diagram shows a modular plastic bracket connecting the battery module.

[0021] Figure 4 for Figure 2 The diagram shows a modular plastic bracket connecting the battery module.

[0022] Figure 5 for Figure 1 A magnified diagram of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the first output pole module of a modular plastic bracket according to the present invention.

[0024] Figure 7 This is a schematic diagram of a series module of a modular plastic bracket according to the present invention.

[0025] Figure 8 for Figure 1 The diagram shows the structure of the second output module.

[0026] Figure 9 for Figure 2 The diagram shows the structure of the second output module.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 10. First output electrode module; 100. Battery module; 101. Battery cell; 11. First bracket; 111. First embedding part; 112. Second embedding part; 113. First connecting part; 114. First clearance hole; 12. First output electrode conductive bus; 13. First series conductive bus; 14. First acquisition area; 20. Second output electrode module; 21. Second bracket; 211. Third embedding part; 212. Fourth embedding part; 213. Second connecting part; 2 14. Second clearance hole; 22. Second output electrode busbar; 23. Second series busbar; 24. Second acquisition area; 30. Busbar module; 31. Series module; 311. Third bracket; 3111. Fifth embedded part; 3112. Third connecting part; 3113. Third clearance hole; 312. Third series busbar; 313. Third acquisition area; 40. Mortise and tenon structure; 41. Dovetail tenon; 411. Tenon end; 412. Tenon cheek; 42. Mortise. Detailed Implementation

[0029] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0030] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0031] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0032] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0033] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0034] Please see Figure 1 and Figure 2 A modular plastic bracket for use with an integrated busbar signal acquisition component to connect multiple battery cells 101 of a battery module 100 in series.

[0035] It should be noted that the signal acquisition components mentioned above can be FPC, PCB, FFC, FDC, etc., and their specific structures are existing technologies, which will not be described in detail here.

[0036] The modular plastic bracket includes a first output electrode module 10, a second output electrode module 20, and a busbar module 30. The first output electrode module 10 and the second output electrode module 20 are respectively spliced ​​at both ends of the busbar module 30 along the length direction of the modular plastic bracket. The busbar module 30 includes a plurality of serially detachable modules 31. The first output electrode module 10 and the second output electrode module 20 are respectively detachably spliced ​​with the serial modules 31.

[0037] The first output electrode module 10 includes a first support 11, which has a first output electrode conductive bus 12 and a first series conductive bus 13 exposed on its surface. The second output electrode module 20 includes a second support 21, which has one or two second series conductive buses 23 and a second output electrode conductive bus 22 exposed on its surface. The series module 31 includes a third support 311, which has two third series conductive buses 312 exposed on its surface.

[0038] The first series conductive bus 13, the second series conductive bus 23, and the third series conductive bus 312 are used to electrically connect the positive and negative terminals of two adjacent battery cells 101, respectively. The first output electrode conductive bus 12 and the second output electrode conductive bus 22 are electrically connected to the external circuit, so that the first output electrode module 10, the second output electrode module 20, the bus module 30, and the signal acquisition component work together to realize the sequential series connection of multiple battery cells 101 of the battery module 100.

[0039] Please see Figure 3 and Figure 4 The first output electrode bus 12 has a first acquisition area 14 for contacting the electrode of the battery cell 101, and the first series bus 13 has two first acquisition areas 14 arranged side by side. The first output electrode bus 12 and the first series bus 13 are distributed at both ends of the first bracket 11 along the width direction of the modular plastic bracket. One first acquisition area 14 of the first series bus 13 is arranged in a straight line with the first acquisition area 14 of the first output electrode bus 12 and respectively contacts the two electrodes of the same battery cell 101. The other first acquisition area 14 of the first series bus 13 needs to cooperate with the series module 31 to contact the two electrodes of the same battery cell 101 respectively. Therefore, the number of first output electrode modules 10 that can completely contact the same battery cell 101 is one, which is an odd number.

[0040] The second output electrode busbar 22 has a second acquisition area 24 for contacting the electrode of the cell 101, and the second series busbar 23 has two second acquisition areas 24 arranged side by side.

[0041] Please see Figure 3 and Figure 8When there is only one second series conductive bus 23, the second series conductive bus 23 and the second output electrode conductive bus 22 are distributed at both ends of the second bracket 21 along the width direction of the modular plastic bracket. One second collection area 24 of the second series conductive bus 23 and the second collection area 24 of the second output electrode conductive bus 22 are arranged in a straight line and respectively connected to the two electrodes of the same battery cell 101. The other second collection area 24 of the second series conductive bus 23 needs to cooperate with the series module 31 to contact the two electrodes of the same battery cell 101. Therefore, the number of second output electrode modules 20 that can completely contact the same battery cell 101 is one, which is an odd number.

[0042] Please see Figure 4 and Figure 9 When there are two second series conductive busbars 23, one second series conductive busbar 23 and one second output electrode conductive busbar 22 are distributed at both ends of the second bracket 21 along the width direction of the modular plastic bracket. Another second series conductive busbar 23 is located at the end of the second bracket 21 where the second output electrode conductive busbar 22 is located, and is arranged along the length direction of the modular plastic bracket with the second output electrode conductive busbar 22. One second collection area 24 of the second series conductive busbar 23 and the second collection area 24 of the second output electrode conductive busbar 22 are arranged in a straight line and respectively connected to the two electrodes of the same battery cell 101. The other second collection area 24 of the other second series conductive busbar 23 is arranged in a straight line with one second collection area 24 of the other second series conductive busbar 23 and respectively connected to the two electrodes of the same battery cell 101. The other second collection area 24 of the other second series conductive busbar 23 needs to cooperate with the series module 31 to contact the two electrodes of the same battery cell 101. Therefore, the number of second output electrode modules 20 that can completely contact the same battery cell 101 is two, which is an even number.

[0043] Please see Figure 3 and Figure 4The third series busbar 312 has two third acquisition areas 313 arranged side by side. The two third series busbars 312 are distributed at both ends of the third bracket 311 along the width direction of the modular plastic bracket. One third acquisition area 313 of the third series busbar 312 and another third acquisition area 313 of the other third series busbar 312 are arranged in a straight line and respectively contact the two electrodes of the same battery cell 101. The other third acquisition area 313 of the third series busbar 312 needs to cooperate with the first output electrode module 10 or another series module 31 to contact the two electrodes of the same battery cell 101. Similarly, the other third acquisition area 313 of the other third series busbar 312 needs to cooperate with the second output electrode module 20 or another series module 31 to contact the two electrodes of the same battery cell 101. Therefore, the number of battery cells 101 that a single series module 31 can completely contact is one, which is an odd number. Thus, the number of battery cells 101 that the busbar module 30 can completely contact is also an odd number.

[0044] Furthermore, after the two ends of the bus module 30 are respectively connected to the first output module 10 and the second output module 20, the number of cells 101 that are completely in contact with the same battery cell increases by two. Therefore, the total number of cells 101 that are completely in contact with the same battery cell is still an odd number.

[0045] In summary, the number of cells 101 that the first output module 10 can completely contact is odd. After the two ends of the busbar module 30 are respectively connected to the first output module 10 and the second output module 20, the total number of cells 101 that can completely contact the same cell is also odd. When there is one second series conductive busbar 23, the number of cells 101 that the second output module 20 can completely contact is odd, so the modular plastic bracket is suitable for battery modules 100 with an odd number of cells 101. When there are two second series conductive busbars 23, the number of cells 101 that the second output module 20 can completely contact is even, so the modular plastic bracket is suitable for battery modules 100 with an even number of cells 101. Therefore, operators can choose to use a second output module 20 with one or two second series conductive busbars 23 depending on the actual number of cells 101 in the battery module 100.

[0046] As described above, the modular plastic bracket provided by this invention, through the cooperation of the first output electrode module 10, the second output electrode module 20, and multiple series modules 31, decomposes the traditional integrated plastic bracket into multiple standardized modules that can be mass-produced, thereby realizing the modularization of the plastic bracket. Workers can adjust the number of series modules 31 and select one or two second output electrode modules 20 based on the actual number of cells 101 in the battery module 100. This not only applies to battery modules 100 of the same model but with different numbers of cells, demonstrating good versatility, but also significantly reduces the mold investment cost of the plastic bracket, greatly shortens the R&D cycle of the integrated busbar, and improves production efficiency. By embedding each conductive busbar onto each bracket, the bracket can tightly cover the conductive busbar, forming a strong mechanical interlock, thus integrating the conductive busbar into the bracket and effectively preventing loosening to improve connection reliability.

[0047] Furthermore, the first output electrode conductive bus 12 and the first series conductive bus 13 are respectively embedded on the first bracket 11 by a wrap-around process, the second output electrode conductive bus 22 and the second series conductive bus 23 are respectively embedded on the second bracket 21 by a wrap-around process, and the third series conductive bus 312 is embedded on the third bracket 311 by a wrap-around process.

[0048] It should be noted that the injection molding process refers to first placing a pre-made part (called an insert) into the mold, then closing the mold, and injecting molten rubber into the cavity. The rubber will flow and surround a specific part of the insert. After cooling, the insert and the rubber will be firmly bonded together to become an inseparable integrated component.

[0049] By using a coating process to encapsulate the busbar onto the support, the busbar and the support can be highly integrated and unified, further improving the connection stability between the busbar and the support, as well as the insulation reliability of the support. In addition, it can also eliminate the subsequent assembly process of the busbar and the support, thereby improving production efficiency.

[0050] Please see Figures 1-5 The first support 11 and the third support 311, the second support 21 and the third support 311, and two adjacent third supports 311 are detachably connected by mortise and tenon structures 40. By using mortise and tenon structures 40 for detachable connection between the supports, on the one hand, it is possible to detach the connection between the first output module 10 and the series module 31, the second output module 20 and the series module 31, and two adjacent series modules 31. On the other hand, it ensures that the first output module 10 and the series module 31, the second output module 20 and the series module 31, and two adjacent series modules 31 can be tightly interlocked to form a stable whole when connected.

[0051] In this embodiment, the mortise and tenon structure 40 is a dovetail tenon. The dovetail tenon has a unique mechanical locking function and excellent tensile strength. Since this modular plastic bracket is used in the battery pack, the temperature change of the battery module 100 during operation will cause thermal stress between the brackets. The excellent tensile strength of the dovetail tenon can well cope with the thermal stress, and its mechanical locking function can ensure that the first output pole module 10 and the series module 31, the second output pole module 20 and the series module 31, and the two adjacent series modules 31 are tightly engaged and do not loosen.

[0052] More specifically, the mortise and tenon structure 40 includes a dovetail tenon 41 and a mortise 42 that mates with the dovetail tenon 41. The first support 11 has a dovetail tenon 41 protruding on the side near the third support 311, the second support 21 has a mortise 42 recessed on the side near the third support 311, the third support 311 has a mortise 42 recessed on the side near the first support 11, and a dovetail tenon 41 protruding on the side of the third support 311 near the second support 21.

[0053] Furthermore, in this embodiment, the first bracket 11, the second bracket 21, and the third bracket 311 are all made of rigid plastic, which can be PC+ABS alloy, PA66 (nylon 66), PC (polycarbonate), PPS (polyphenylene sulfide), etc. The included angle θ between the tenon end 411 and the tenon cheek 412 of the dovetail tenon 41 is 80°~83°. It can be understood that the smaller the included angle θ, the less likely the dovetail tenon 41 is to be pulled out of the mortise 42. However, if the included angle θ is too small, it will cause severe stress concentration at the connection between the dovetail tenon 41 and the bracket body, and may even cause breakage or collapse. On the other hand, if the included angle θ is too large, it will reduce the tensile strength of the tenon and mortise structure 40 and affect the tight connection between the modules. After multiple tests, the included angle θ is controlled within the range of 80°~83°, which can both prevent stress concentration and ensure tensile strength. Those skilled in the art can specifically set the included angle θ to 80°, 80.5°, 81°, 81.5°, 82°, 82.5°, 83°, etc., without making a unique limitation here.

[0054] In another embodiment, the first support 11, the second support 21, and the third support 311 are all made of soft plastic, such as soft PVC (soft polyvinyl chloride), TPU (thermoplastic polyurethane), or TPE (thermoplastic elastomer). The angle θ between the tenon end 411 and the tenon cheek 412 of the dovetail tenon 41 is 75°~80°. It can be understood that the smaller the angle θ, the less likely the dovetail tenon 41 is to be pulled out of the mortise 42. However, if the angle θ is too small, it will cause severe stress concentration at the connection between the dovetail tenon 41 and the support body, even leading to breakage. Conversely, if the angle θ is too large, it will reduce the tensile strength of the mortise and tenon structure 40, and may even cause the dovetail tenon 41 to detach from the mortise 42. Through multiple tests, the angle θ is controlled within the range of 75°~80°, which can both prevent stress concentration and ensure tensile strength. Those skilled in the art can specifically set the included angle θ to 75°, 76°, 77°, 78°, 79°, 80°, etc., and no single limitation is made here.

[0055] Please see Figure 6 The first bracket 11 has a first insert portion 111, a second insert portion 112, and a first connecting portion 113 connecting the first insert portion 111 and the second insert portion 112. The first insert portion 111 and the second insert portion 112 are distributed at both ends of the first bracket 11 along the width direction of the modular plastic bracket. The first insert portion 111, the second insert portion 112, and the first connecting portion 113 are respectively provided with dovetail tenons 41 on the side near the third bracket 311.

[0056] Furthermore, the first connecting portion 113 passes through a first clearance hole 114 provided with a pressure relief valve for avoiding the battery cell 101.

[0057] More specifically, the first embedded part 111 is embedded with a first output electrode conductive bus 12, and the second embedded part 112 is embedded with a first series conductive bus 13. The first output electrode conductive bus 12 is exposed on the upper and lower surfaces of the first embedded part 111, and the first series conductive bus 13 is exposed on the upper and lower surfaces of the second embedded part 112, thereby enabling the first output electrode conductive bus 12 to be electrically connected to the battery cell 101 and the signal acquisition component respectively, and enabling the first series conductive bus 13 to be electrically connected to the battery cell 101 and the signal acquisition component respectively.

[0058] Please see Figure 8 and Figure 9The second bracket 21 has a third embedding portion 211, a fourth embedding portion 212, and a second connecting portion 213 connecting the third embedding portion 211 and the fourth embedding portion 212. The third embedding portion 211 and the fourth embedding portion 212 are distributed at both ends of the second bracket 21 along the width direction of the modular plastic bracket. The third embedding portion 211, the fourth embedding portion 212, and the second connecting portion 213 are respectively provided with mortises 42 on the side near the third bracket 311.

[0059] Furthermore, the second connection portion 213 passes through a second clearance hole 214 provided with a pressure relief valve for avoiding the battery cell 101.

[0060] For more details, please see Figure 8 When there is only one second series conductive busbar 23, the third embedding part 211 embeds a second output electrode conductive busbar 22, and the fourth embedding part 212 embeds a second series conductive busbar 23. The second output electrode conductive busbar 22 is exposed on the upper and lower surfaces of the third embedding part 211, and the second series conductive busbar 23 is exposed on the upper and lower surfaces of the fourth embedding part 212. This enables the second output electrode conductive busbar 22 to be electrically connected to the battery cell 101 and the signal acquisition component, and the second series conductive busbar 23 to be electrically connected to the battery cell 101 and the signal acquisition component, respectively.

[0061] For more details, please see Figure 9 When there are two second series conductive busbars 23, the third embedding part 211 embeds a second output electrode conductive busbar 22 and a second series conductive busbar 23, and the second output electrode conductive busbar 22 and the second series conductive busbar 23 are exposed on the upper and lower surfaces of the third embedding part 211, respectively. The fourth embedding part 212 embeds a second series conductive busbar 23, and the second series conductive busbar 23 is exposed on the upper and lower surfaces of the fourth embedding part 212, thereby realizing that the second output electrode conductive busbar 22 can be electrically connected to the battery cell 101 and the signal acquisition component respectively, and the second series conductive busbar 23 can be electrically connected to the battery cell 101 and the signal acquisition component respectively.

[0062] Please see Figure 7 The third bracket 311 has two fifth insert portions 3111 and a third connecting portion 3112 connecting the two fifth insert portions 3111. The two fifth insert portions 3111 are distributed at both ends of the third bracket 311 along the width direction of the modular plastic bracket. The fifth insert portions 3111 are provided with mortises 42 and dovetail tenons 41 on the side near the first bracket 11 and the side near the second bracket 21, respectively. The third connecting portion 3112 is provided with mortises 42 and dovetail tenons 41 on the side near the first bracket 11 and the side near the second bracket 21, respectively.

[0063] Furthermore, the third connection portion 3112 passes through a third clearance hole 3113 for avoiding the pressure relief valve of the battery cell 101.

[0064] More specifically, each fifth embedded part 3111 is embedded with a third series conductive bus 312, and the third series conductive bus 312 can be exposed on the upper and lower surfaces of the fifth embedded part 3111, so that the third series conductive bus 312 can be electrically connected to the battery cell 101 and the signal acquisition component respectively.

[0065] When the modular plastic bracket provided by the present invention is installed in the battery module 100, it is located above the battery cell 101 and is in close contact with the battery cell 101. Through the cooperation of the first clearance hole 114, the second clearance hole 214 and the third clearance hole 3113, it can ensure that when the pressure relief valve of the battery cell 101 is triggered, the high temperature and high pressure ejected material has a smooth and directional discharge path, thereby ensuring the safety of the battery pack. At the same time, it can also prevent the high temperature and high pressure ejected material from impacting the modular plastic bracket, thereby protecting the modular plastic bracket.

[0066] In addition, the present invention also provides an integrated busbar, including a signal acquisition component and a modular plastic bracket as described in any of the above embodiments. The signal acquisition component is mounted on the modular plastic bracket, and the modular plastic bracket is electrically connected to the signal acquisition component.

[0067] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A modular plastic bracket for use with an integrated busbar signal acquisition component to connect multiple battery cells (101) of a battery module (100) in series, characterized in that, The device includes a first output electrode module (10), a second output electrode module (20), and a busbar module (30). The first output electrode module (10) and the second output electrode module (20) are respectively spliced ​​at both ends of the busbar module (30) along the length direction of the modular plastic bracket. The busbar module (30) includes a plurality of serially detachable modules (31). The first output electrode module (10) and the second output electrode module (20) are respectively detachably spliced ​​with the serially detachable modules (31). The first output electrode module (10) includes a first support (11), which has a first output electrode conductive bus (12) and a first series conductive bus (13) exposed on its surface. The second output electrode module (20) includes a second support (21), which has one or two second series conductive buses (23) and a second output electrode conductive bus (22) exposed on its surface. The series module (31) includes a third support (311), which has two third series conductive buses (312) exposed on its surface. The first output electrode bus (12) and the first series bus (13) are respectively embedded on the first bracket (11) by a shot peening process. The second output electrode bus (22) and the second series bus (23) are respectively embedded on the second bracket (21) by a shot peening process. The third series bus (312) is embedded on the third bracket (311) by a shot peening process. The first series busbar (13), the second series busbar (23), and the third series busbar (312) are used to electrically connect the positive and negative poles of two adjacent battery cells (101), respectively. The first output busbar (12) and the second output busbar (22) are electrically connected to the external circuit.

2. The modular plastic bracket as described in claim 1, characterized in that, The first bracket (11) and the third bracket (311), the second bracket (21) and the third bracket (311), and two adjacent third brackets (311) are respectively detachably spliced ​​by tenon and mortise structure (40).

3. The modular plastic bracket as described in claim 2, characterized in that, The mortise and tenon structure (40) is a dovetail tenon, which includes a dovetail tenon (41) and a mortise (42) that mates with the dovetail tenon (41).

4. The modular plastic bracket as described in claim 3, characterized in that, The first bracket (11), the second bracket (21), and the third bracket (311) are all made of hard plastic. The angle θ between the tenon end (411) and the tenon cheek (412) of the dovetail tenon (41) is 80°~83°.

5. The modular plastic bracket as described in claim 3, characterized in that, The first bracket (11), the second bracket (21), and the third bracket (311) are all made of soft plastic. The angle θ between the tenon end (411) and the tenon cheek (412) of the dovetail tenon (41) is 75°~80°.

6. The modular plastic bracket as described in claim 1, characterized in that, The first bracket (11) has a first embedding part (111), a second embedding part (112) and a first connecting part (113) connecting the first embedding part (111) and the second embedding part (112). The first connecting part (113) has a first clearance hole (114) through which a pressure relief valve for avoiding the battery cell (101) is provided. The first embedding part (111) is fitted with a first output electrode conductive bus (12), and the second embedding part (112) is fitted with a first series conductive bus (13).

7. The modular plastic bracket as described in claim 1, characterized in that, The second bracket (21) has a third embedding part (211), a fourth embedding part (212) and a second connecting part (213) connecting the third embedding part (211) and the fourth embedding part (212). The second connecting part (213) passes through a second clearance hole (214) for a pressure relief valve to avoid the battery cell (101). When the number of the second series conductive bus (23) is one, the third embedding part (211) embeds a second output electrode conductive bus (22), and the fourth embedding part (212) embeds a second series conductive bus (23). When the number of the second series conductive bus (23) is two, the third embedding part (211) embeds a second output electrode conductive bus (22) and a second series conductive bus (23), and the fourth embedding part (212) embeds a second series conductive bus (23).

8. The modular plastic bracket as described in claim 1, characterized in that, The third bracket (311) has two fifth embedding portions (3111) and a third connecting portion (3112) connecting the two fifth embedding portions (3111). The third connecting portion (3112) passes through a third clearance hole (3113) for opening a pressure relief valve for avoiding the battery cell (101). Each fifth embedding portion (3111) is embedded with one of the third series conductive busbars (312).

9. An integrated busbar, comprising a signal acquisition component, characterized in that, It also includes a modular plastic bracket as described in any one of claims 1 to 8, wherein the signal acquisition component is mounted on the modular plastic bracket, and the modular plastic bracket is electrically connected to the signal acquisition component.

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