Busbar assembly and battery module

Abstract

The present application discloses a busbar assembly and a battery module. The busbar assembly is used for overall busbar-based connection of a cell module, and comprises: a mounting seat, comprising a first mounting part, a second mounting part, and an insulating stop plate, wherein the first mounting part is adapted to be detachably connected onto side plates of the cell module, the first mounting part is connected to the second mounting part, and the insulating stop plate and the second mounting part jointly define a mounting space; and a first conductive sheet, located in the mounting space and detachably connected to the second mounting part, wherein the first conductive sheet is adapted to be electrically connected to tabs of the cell module, and when the first mounting part is mounted on the side plates of the cell module, the insulating stop plate is located between adjacent tabs. According to the present application, the busbar assembly is provided to support and fix a general busbar tab, is electrically connected to the general busbar tab of the cell module, achieves overall busbar-based connection of the cell module, occupies a small space, and can implement convenient and rapid detachable mounting.

Description

A busbar assembly and battery module Technical Field

[0001] The present application relates to the field of battery technology, and more specifically to a busbar assembly, and also to a battery module including the above-mentioned busbar assembly. Background Art

[0002] In traditional batteries, a cell support covering the cell module must be installed directly above the cell module. This allows the tabs of the multiple cells in the cell module to pass through the support, completing the electrical connection of the multiple cells and ultimately forming the total positive and negative electrodes of the cell module. This total current collection requires the installation of a large cell support above the cell module, which takes up a lot of space and is inconvenient to assemble.

[0003] Summary of the Invention

[0004] In view of this, the present application provides a busbar assembly and also provides a battery module including the above-mentioned busbar assembly, which solves the problem of large size and inconvenient assembly of structural parts for achieving total busbar assembly of battery cell modules.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A busbar assembly, characterized in that it is used for busbaring a battery module, comprising:

[0007] The mounting seat includes a first mounting portion, a second mounting portion and an insulating baffle, wherein the first mounting portion is detachably connected to the side plate of the battery module, and the insulating baffle and the second mounting portion together enclose a mounting groove;

[0008] The first conductive sheet is located in the mounting groove and is detachably connected to the second mounting portion. The first conductive sheet is electrically connected to the tabs of the battery cell module. When the first mounting portion is on the side plate of the battery cell module, the insulating baffle is located between adjacent tabs.

[0009] Optionally, in the above-mentioned confluence assembly, the second mounting portion includes a bearing platform and a first limiting plate and a second limiting plate arranged on opposite sides of the bearing platform;

[0010] A clamping groove is formed on the first limiting plate, a clamping protrusion is formed on the second limiting plate, one end of the first conductive sheet is inserted into the clamping groove, and the other end is clamped between the supporting platform and the clamping protrusion.

[0011] Optionally, in the above-mentioned confluence assembly, a guide surface is formed on a side of the clamping protrusion away from the surface of the supporting platform;

[0012] Along the direction approaching the clamping groove, the guide surface is gradually inclined toward the direction approaching the supporting platform.

[0013] Optionally, in the above-mentioned busbar assembly, the insulating baffle is arranged on one side of the supporting platform, and both ends of the insulating baffle are respectively connected to the first limiting plate and the second limiting plate;

[0014] The insulating baffle, the first limiting plate and the second limiting plate together enclose the installation groove.

[0015] Optionally, in the above-mentioned busbar assembly, the first mounting portion is located on the other side of the supporting platform away from the insulating baffle;

[0016] The first mounting portion includes a base body and first positioning columns and mounting holes formed on the base body and arranged at intervals. An embedded nut is provided in the mounting hole. The first positioning columns and the mounting hole are located on a side surface of the base body away from the supporting platform.

[0017] Optionally, in the above-mentioned confluence assembly, the first mounting portion includes two first positioning columns and two mounting holes, the two first positioning columns are arranged diagonally on the side surface of the base body, and the two mounting holes are arranged diagonally on the side surface of the base body.

[0018] Optionally, in the above-mentioned confluence assembly, a first fixing hole is provided on the bearing platform, and an embedded nut is provided in the first fixing hole;

[0019] An electrical connection hole is formed on the first conductive sheet, and the electrical connection hole is arranged corresponding to the first fixing hole;

[0020] The busbar assembly further includes a first fastener, which is passed through the electrical connection hole and connected to the embedded nut. The first fastener is a connecting bolt.

[0021] Optionally, in the above busbar assembly, the busbar assembly further includes an auxiliary support frame, a second conductive sheet and a fuse;

[0022] The auxiliary support frame is mounted on the side plate of the battery module, and the fuse is electrically connected between the first conductive sheet and the auxiliary support frame through the second conductive sheet;

[0023] The insulating baffle is provided with a limiting hole, and the second conductive sheet is passed through the limiting hole.

[0024] Optionally, in the above-mentioned busbar assembly, the second mounting portion further comprises a second positioning column, and the second positioning column is located on a side of the second limiting plate away from the insulating baffle;

[0025] The first conductive sheet has a positioning notch, and the positioning notch is adapted to fit the second positioning post.

[0026] A battery module comprising the above-mentioned busbar assembly and a cell module, wherein the cell module comprises a plurality of side plates and a plurality of cells, wherein the plurality of side plates together enclose a receiving cavity, wherein a plurality of stacked cells are mounted in the receiving cavity, and wherein two busbar assemblies are respectively electrically connected to two tabs of opposite polarity in the plurality of cells;

[0027] The battery module further includes a sampling plate support frame and a sampling circuit board. The sampling plate support frame is fixedly connected to the side plate. The sampling circuit board is mounted on the sampling plate support frame. The sampling circuit board is electrically connected to the tabs of the plurality of battery cells.

[0028] Optionally, in the above battery module, the mounting seat is overlapped on the sampling plate support frame; or,

[0029] The mounting seat is detachably connected to the sampling plate support frame.

[0030] In the bus assembly and battery module provided in the present application, an innovative bus assembly is set up to support and fix the total bus pole ear, and the total bus pole ear of the battery core module is electrically connected to the first conductive sheet of the bus assembly to realize the total bus of the battery cell module; the bus assembly only includes a mounting base with a smaller structural size and a first conductive sheet; the bus assembly can be installed on the side panel of the battery cell module, and its detachable installation is convenient and fast, and it occupies a small space. There is no need to cover the top of the battery cell module with a battery cell bracket with a larger structural size, which enriches the form of total bus of the battery cell module; further, the first conductive sheet is detachably mounted on the second mounting part of the mounting base, and the disassembly, replacement and maintenance of the first conductive sheet are more convenient and quick; at the same time, an insulating baffle is also provided on the mounting base, which can effectively prevent the short circuit problem between the total bus pole ear and the adjacent pole ear, thereby increasing the reliability and safety of battery use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0032] FIG1 is a schematic structural diagram of the mounting base of the present application;

[0033] FIG2 is a schematic structural diagram of the confluence assembly of the present application;

[0034] FIG3 is a schematic structural diagram of the confluence assembly of the present application from another angle;

[0035] FIG4 is a schematic structural diagram of the assembly of the busbar assembly and the battery cell module of the present application;

[0036] FIG5 is an exploded view of the busbar assembly and the battery module of the present application;

[0037] FIG6 is a schematic structural diagram of the assembly of the confluence assembly and the sampling plate support frame of the present application;

[0038] FIG7 is a schematic structural diagram of the assembly of the confluence component, sampling plate support frame, and sampling circuit board of the present application;

[0039] FIG8 is an exploded view of area A in FIG7 ;

[0040] FIG. 9 is an exploded view of area B in FIG. 7 .

[0041] In Figures 1 to 9:

[0042] 1. Mounting base; 2. First conductive sheet; 3. First fastener; 4. Auxiliary support frame; 5. Second conductive sheet; 6. Fuse; 7. Busbar assembly; 8. Cell module; 9. Third fastener; 10. External circuit terminal;

[0043] 11. First mounting portion; 12. Second mounting portion; 13. Insulating baffle;

[0044] 21. Electrical connection hole; 22. Positioning notch;

[0045] 41. Second fixing hole;

[0046] 81. Side panel; 82. Battery cell; 83. Sampling board support frame; 84. Sampling circuit board;

[0047] 111. Base; 112. First positioning column; 113. Mounting hole;

[0048] 121, carrying platform; 122, first limiting plate; 123, second limiting plate; 124, second positioning column;

[0049] 131, limiting hole;

[0050] 821, total current positive lug; 822, total current negative lug;

[0051] 841, nickel sheet;

[0052] 1211, first fixing hole;

[0053] 1221, card slot;

[0054] 1231, snap-fit ​​protrusion;

[0055] 12311. Guide surface. DETAILED DESCRIPTION

[0056] The present application provides a busbar assembly and also provides a battery module including the above busbar assembly.

[0057] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0058] As shown in Figures 1 to 9, a busbar assembly is used to busbar the battery cell modules. The busbar assembly 7 includes a mounting seat 1 and a first conductive sheet 2. Referring to Figure 1, the mounting seat includes a first mounting portion 11, a second mounting portion 12 and an insulating baffle 13. The first mounting portion 11 is used to be detachably connected to the side plate 81 of the battery cell module 8. The first mounting portion 11 is connected to the second mounting portion 12, and the insulating baffle 13 and the second mounting portion 12 are together enclosed to form a mounting groove. The first conductive sheet 2 is located in the mounting groove and is detachably connected to the second mounting portion 12. The first conductive sheet 2 is used to electrically connect to the tabs of the battery cell 82 of the battery cell module 8. When the first mounting portion 11 is installed on the side plate 81 of the battery cell module 8, the insulating baffle 13 is located between adjacent tabs (for example, between two tabs of the battery cell adjacent to the busbar assembly).

[0059] It should be noted that the busbar assembly 7 is used to connect the total busbar of the battery cell module, which means that the positive and negative ears of multiple battery cells 82 in the battery cell module 8 are connected in series in sequence, and finally a total busbar positive ear 821 and a total busbar negative ear 822 are obtained; the total busbar positive ear 821 is received by a busbar assembly 7 and electrically connected to the total busbar positive ear 821 to obtain a total busbar positive electrode; and the total busbar negative ear 822 is received by another busbar assembly 7 and electrically connected to the total busbar negative ear 822 to obtain a total busbar negative electrode.

[0060] The first conductive sheet 2 can be a copper busbar or an aluminum busbar, and is used to be electrically connected to the busbar tabs of the battery module 8 to obtain the busbar positive electrode and the busbar negative electrode of the battery module 8 .

[0061] It should be further explained that the positive tab of the battery cell 82 and the negative tab of the adjacent battery cell 82 are welded by a welding jig to connect multiple battery cells 82 in series. The welding jig is formed with a tab outlet and a welding platform. The tabs of the battery cell 82 pass through the tab outlet and overlap on the welding platform, and the positive tabs and negative tabs of the multiple battery cells 82 are connected in series in sequence. When the electrical connection of the multiple battery cells 82 is completed, the welding jig is detached from the battery cell 82. At this time, the total positive tab 821 and the total negative tab 822 obtained by welding are both in a suspended state.

[0062] The suspended total bus tab can be reliably supported and fixed by the bus assembly 7, and the total bus tab is electrically connected to the first conductive sheet 2 on the bus assembly 7 to obtain a total bus pole. The present application innovatively sets up the bus assembly 7 to achieve support and fixation of the total bus tab. The total bus pole of the cell module can be obtained only by electrically connecting the total bus tab of the cell module 8 to the first conductive sheet 2 of the bus assembly 7. The bus assembly 7 only includes a mounting seat 1 with a relatively small structural size and a first conductive sheet 2; the bus assembly 7 can be installed on the side panel 81 of the cell module 8. It is detachable and quick to install, and occupies a small space. There is no need to cover the top of the cell module 8 with a cell bracket with a larger structural size, which enriches the form of the total bus of the cell module.

[0063] Furthermore, the first conductive sheet 2 is detachably mounted on the second mounting portion 12 of the mounting base 1 , making disassembly, replacement, and maintenance of the first conductive sheet 2 more convenient and rapid.

[0064] At the same time, an insulating baffle 13 is provided on the mounting base 1, which can effectively prevent the short circuit problem between the main bus tab and the adjacent tabs, thereby increasing the reliability and safety of the battery.

[0065] In certain embodiments of the present application, as shown in FIG1 , the second mounting portion 12 includes a support platform 121 and first and second limiting plates 122 and 123 disposed on opposite sides of the support platform 121. In certain embodiments of the present application, as shown in FIG13 , an insulating baffle 13 is disposed on one side of the support platform 121; its ends are connected to the first and second limiting plates 122 and 123, respectively. The insulating baffle 13, first and second limiting plates 122 and 123 together form a mounting slot.

[0066] Referring to Figure 1 , a snap-in slot 1221 is defined on the first limiting plate 122. Referring to Figure 2 , a snap-in protrusion 1231 is provided on the second limiting plate 123. Referring to Figures 1-3 , one end of the first conductive sheet 2 is inserted into the snap-in slot 1221, and the other end is snap-in between the support platform 121 and the snap-in protrusion 1231.

[0067] It should be noted that the first conductive sheet 2 is capable of elastic deformation. First, the first end of the first conductive sheet 2 is inserted into the engaging groove 1221. Then, the second end of the first conductive sheet 2 is squeezed at the second limiting plate 123, causing the second end of the first conductive sheet 2 to bend and deform, extending into the gap between the supporting platform 121 and the engaging protrusion 1231. The squeezing of the second end of the first conductive sheet 2 is then released, causing the second end of the first conductive sheet 2 to restore its original shape and finally fully engage with the gap between the supporting platform 121 and the engaging protrusion 1231, thereby completing the secure installation and fixation of the first conductive sheet 2 on the supporting platform 121.

[0068] By respectively providing a snap-fit ​​groove 1221 and a snap-fit ​​protrusion 1231 at both ends of the carrier 121 , the first conductive sheet 2 can be detachably mounted and fixed on the second mounting portion 12 in a convenient and fast manner. The structure is simple, low-cost, and easy to produce and process.

[0069] In some embodiments of the present application, referring to FIG2 , a guide surface 12311 is formed on a side of the engaging protrusion 1231 away from the surface of the support platform 121 . As it approaches the engaging groove 1221 , the guide surface 12311 is gradually inclined toward the support platform 121 .

[0070] By setting the guide surface 12311, the second end of the first conductive sheet 2 is guided and bent at the second limiting plate 123. The bending deformation action is easier to operate and the deformation is stable, ensuring the convenient and fast installation operation of the first conductive sheet 2 on the second mounting portion 12.

[0071] The insulating baffle 13 is disposed on one side of the support platform 121, thereby isolating the busbar tab placed on the support platform 121 from the tab located on the side of the insulating baffle 13 away from the support platform 121, effectively avoiding the risk of short-circuiting between the busbar tab and other tabs. Furthermore, the insulating baffle 13, the first limiting plate 122, and the second limiting plate 123 together form a U-shaped mounting groove, which can precisely limit the position of the first conductive sheet 2 within the aforementioned mounting groove, effectively ensuring that the first conductive sheet 2 is securely fixed to the second mounting portion 12.

[0072] In some embodiments of the present application, the first mounting portion 11 is located on the other side of the supporting platform 121 away from the insulating barrier 13 .

[0073] It should be noted that, referring to Figures 4-5, the total bus positive ear 821 and the total bus negative ear 822 of the battery module are respectively formed at the two ends of the battery module 8. Therefore, the bus assembly 7 is arranged on the side panels 81 at the two ends of the battery module 8 corresponding to the positions of the total bus positive ear 821 and the total bus negative ear 822. Furthermore, the length of the side panel 81 exceeds the battery cell 82, and the first mounting portion 11 of the bus assembly 7 is mounted on the inner side wall of the side panel 81 beyond the battery cell 82. As described above, it is ensured that when the first mounting portion 11 is mounted on the inner side wall of the side panel 81, the supporting platform 121 can extend in the direction close to the total bus ear, ensuring the precise alignment between the supporting platform 121 and the total bus ear; at the same time, it is ensured that the insulating baffle 13 isolates the total bus ear located at the end of the battery module 8 from other ears.

[0074] In some embodiments, referring to FIG. 1 , the first mounting portion 11 includes a base 111 and a first positioning post 112 formed on the base 111. Accordingly, a positioning hole is provided on the side panel 81 of the cell module 8. The first positioning post 112 is positioned within the positioning hole to precisely control the installation position of the busbar assembly 7 on the side panel 81.

[0075] It should be noted that a positioning column may also be provided on the inner side wall of the battery cell module, and correspondingly, a positioning hole is provided on the side wall of the first mounting portion 11 .

[0076] In some embodiments, the base 111 is provided with a mounting hole 113, and an embedded nut (also known as a pre-embedded nut) is disposed within the mounting hole 113. Correspondingly, a through-hole is provided in the side panel 81 of the cell module 8, with the through-hole in the side panel 81 being located opposite the mounting hole 113. A second fastener is inserted through the through-hole and engages with the embedded nut within the mounting hole 113, thereby achieving a convenient, fast, and secure, removable connection of the mounting base 1 to the side panel 81. The second fastener is a connecting bolt.

[0077] Furthermore, the first mounting portion 11 includes two first positioning posts 112 and two mounting holes 113. The two first positioning posts 112 are arranged diagonally on the side of the base 111; the two mounting holes 113 are arranged diagonally on the side of the base 111.

[0078] As described above, the two first positioning columns 112 and the two mounting holes are reasonably arranged on the side of the base body 111. The four corners of the base body 111 are all force points, ensuring that the first mounting part 11 is firmly connected and fixed on the side panel 81, and it will not deflect or loosen during use.

[0079] In certain embodiments of the present application, referring to FIG1 , a first fixing hole 1211 is provided on the support platform 121, and an embedded nut is disposed within the first fixing hole 1211. Referring to FIG3 , an electrical connection hole 21 is provided on the first conductive sheet 2, corresponding to the first fixing hole 1211. Referring to FIG8 , the busbar assembly 7 further includes a first fastener 3 , which is inserted through the electrical connection hole 21 and connected to the embedded nut; the first fastener 3 is a connecting bolt.

[0080] It should be noted that the external circuit is electrically connected to the bus assembly 7, so that the total bus positive pole and the total bus negative pole of the battery module 8 are led out of the battery module 8 through the external circuit and connected to the external circuit to power the external device.

[0081] It should be further explained that an external circuit terminal 10 is provided on the external circuit, and the external circuit terminal 10 is placed in alignment with the electrical connection hole 21; the first fastener 3 is sequentially passed through the external circuit terminal 10 and the electrical connection hole 21, and connected to the embedded nut in the first fixing hole 1211, so as to clamp and fix the external circuit terminal 10 between the first fastener 3 and the electrical connection hole 21, and finally realize the electrical connection between the external circuit and the first conductive sheet 2.

[0082] The external circuits include a positive external circuit and a negative external circuit. The positive external circuit is electrically connected to the bus assembly 7 aligned with the main bus positive tab 821, and the negative external circuit is electrically connected to the bus assembly 7 aligned with the main bus negative tab 822. Furthermore, the external circuits can be connecting wires, copper busbars, or aluminum busbars.

[0083] As described above, a detachable connection between the external circuit and the converging assembly 7 is achieved, and the disassembly, replacement and maintenance of the external circuit are more convenient and quick.

[0084] In certain embodiments of the present application, referring to FIG. 9 , the busbar assembly 7 further includes an auxiliary support frame 4, a second conductive sheet 5, and a fuse 6. The auxiliary support frame 4 is mounted on the side plate 81 of the battery module 8. The fuse 6 is electrically connected between the first conductive sheet 2 and the auxiliary support frame 4 via the second conductive sheet 5.

[0085] It should be noted that the fuse 6 can be provided or omitted according to actual needs. When the fuse 6 is provided, the auxiliary support frame 4 is required so that the busbar assembly 7 and the auxiliary support frame 4 serve as the two electrical connection points of the fuse 6. The external line terminal 10 of the external circuit is then electrically connected to the auxiliary support frame 4 to electrically connect the fuse 6 between the main busbar and the external circuit.

[0086] It should be further explained that the auxiliary support frame 4 has a second fixing hole 41, in which an embedded nut is provided. The first and second opposite ends of the fuse 6 are each connected to a second conductive plate 5; the second conductive plate 5 has a connecting through hole.

[0087] Please refer to Figure 9. The first fastener 3 sequentially passes through the connection through hole and the electrical connection hole 21 on the second conductive sheet 5 at the first end of the fuse 6 and is fixedly connected to the embedded nut in the first fixing hole 1211 to achieve the connection and fixation of the first end of the fuse 6 on the bus assembly 7; the third fastener 9 sequentially passes through the connection through hole and the external line terminal 10 of the external line on the second conductive sheet 5 at the second end of the fuse 6 and is fixedly connected to the embedded nut in the second fixing hole 41 to achieve the connection and fixation of the second end of the fuse 6 on the auxiliary support frame 4.

[0088] As described above, the fuse 6 is connected in series on the total bus positive pole or the total bus negative pole; when the total bus positive pole and the total bus negative pole of the battery module 8 are connected to the external circuit for power supply, when a short circuit or other fault occurs, the fuse 6 will be damaged due to overcurrent and the power supply circuit will be disconnected, which effectively improves the reliability and safety of battery use.

[0089] In some embodiments, the insulating baffle 13 defines a limiting hole 131 , and the second conductive sheet 5 passes through the limiting hole 131 .

[0090] The second conductive piece 5 at the first end of the fuse 6 needs to be electrically connected to the bus assembly 7; in order to ensure that the second conductive piece 5 can extend to the bus assembly 7, a limiting hole 131 needs to be opened on the insulating baffle 13 to ensure the smooth assembly of the second conductive piece 5 on the bus assembly 7.

[0091] In certain embodiments of the present application, referring to Figures 1-3 , the second mounting portion 12 further includes a second positioning post 124 , which is located on a side of the second limiting plate 123 away from the insulating baffle 13 . Referring to Figures 2-3 , the first conductive sheet 2 has a positioning notch 22 , which fits snugly into the second positioning post 124 .

[0092] As mentioned above, when the first conductive sheet 2 is clamped between the supporting platform 121 and the clamping protrusion 1231, the second positioning column 124 limits the positioning notch 22, thereby preventing the first conductive sheet 2 from moving out of the supporting platform 121 away from the side of the insulating baffle 13, further ensuring the precise positioning of the first conductive sheet 2 on the second mounting portion 12.

[0093] In summary, the present application further provides a battery module; the battery module includes the busbar assembly 7 and cell module 8 described above. The cell module 8 includes multiple side panels 81 and multiple cells 82; the multiple side panels 81 collectively enclose a housing cavity, and the multiple stacked cells 82 are installed in the housing cavity. Two busbar assemblies 7 are respectively electrically connected to two tabs of opposite polarity in the multiple cells 82, namely, the total busbar positive tab and the total busbar negative tab.

[0094] Since the battery module of the present application includes the above-mentioned bus assembly 7, the beneficial effects of the battery module brought by the bus assembly 7 can be found above and will not be repeated here.

[0095] In some embodiments, the battery module 8 further includes a sampling plate support frame 83 and a sampling circuit board 84. The sampling plate support frame 83 is fixedly connected to the side plate 81; the sampling circuit board 84 is mounted on the sampling plate support frame 83 and is electrically connected to the tabs of the plurality of battery cells 82.

[0096] It should be noted that the sampling circuit board 84 includes a circuit board body and a nickel sheet 841 electrically connected to the circuit board body. The nickel sheet 841 is welded to the tab of the battery cell 82. Multiple nickel sheets 841 are provided along the direction in which the multiple battery cells 82 are arranged, and the multiple nickel sheets 841 are arranged one-to-one with the multiple battery cells 82.

[0097] The sampling board support frame 83 can support and fix the sampling circuit board 84 ; the sampling circuit board 84 is used to collect and feedback the performance parameters and charge and discharge status of multiple battery cells 82 .

[0098] In certain embodiments of the present application, the mounting base 1 is overlapped on the sampling plate support frame 83 .

[0099] It should be noted that the first mounting portion 11 of the mounting seat 1 is formed at one end of the mounting seat 1 , and the end of the mounting seat 1 away from the first mounting portion 11 is overlapped on the sampling plate support frame 83 .

[0100] As described above, both ends of the mounting base 1 have support points, ensuring that the end of the mounting base 1 away from the first mounting portion 11 is not suspended in the air, thereby ensuring that the bus assembly 7 reliably supports and fixes the main bus tab. Furthermore, the overlap operation of the end of the mounting base 1 away from the first mounting portion 11 on the sampling plate support frame 83 is convenient and fast, improving the assembly efficiency of the battery module.

[0101] Alternatively, the mounting base 1 and the sampling plate support frame 83 are detachably connected.

[0102] It should be noted that a snap that can be opened and closed is provided on the sampling plate support frame 83 , and the end of the mounting base 1 away from the first mounting portion 11 is detachably connected to the sampling plate support frame 83 through the snap.

[0103] As described above, the connection and fixation of the mounting base 1 on the sampling plate support frame 83 is more reliable and stable, and it will not loosen or fall off during use, further improving the reliability and safety of battery use.

[0104] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the accompanying drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, or configured in any manner. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0105] It should also be noted that in the device of the present application, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as equivalent solutions of the present application.

[0106] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0107] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

[0108] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A busbar assembly, characterized in that: Used for total current collection of battery modules, including: A mounting seat (1), comprising a first mounting portion (11), a second mounting portion (12) and an insulating baffle (13), wherein the first mounting portion (11) is used to be detachably connected to a side plate (81) of the battery cell module (8), the first mounting portion (11) is connected to the second mounting portion (12), and the insulating baffle (13) and the second mounting portion (12) are jointly enclosed to form a mounting groove; A first conductive sheet (2) is located in the mounting groove and is detachably connected to the second mounting portion (12); the first conductive sheet (2) is used to be electrically connected to the tabs of the battery cell module (8); when the first mounting portion (11) is mounted on the side plate (81) of the battery cell module (8), the insulating baffle (13) is located between adjacent tabs.

2. The busbar assembly according to claim 1, characterized in that: The second mounting portion (12) comprises a bearing platform (121) and a first limiting plate (122) and a second limiting plate (123) arranged on opposite sides of the bearing platform (121); the insulating baffle (13) is arranged on one side of the bearing platform (121); two ends of the insulating baffle (13) are respectively connected to the first limiting plate (122) and the second limiting plate (123); the insulating baffle (13), the first limiting plate (122) and the second limiting plate (123) jointly enclose the mounting groove; and The first limiting plate (122) is provided with a clamping groove (1221), and one end of the first conductive sheet (2) is plugged into the clamping groove (1221).

3. The busbar assembly according to claim 2, characterized in that: The second limiting plate (123) is provided with a clamping protrusion (1231), and the other end of the first conductive sheet (2) is clamped between the supporting platform (121) and the clamping protrusion (1231).

4. The busbar assembly according to claim 3, characterized in that: A guide surface (12311) is formed on a side of the clamping protrusion (1231) away from the surface of the bearing platform (121); Along the direction approaching the clamping groove (1221), the guide surface (12311) is gradually inclined toward the direction approaching the supporting platform (121).

5. The busbar assembly according to any one of claims 2 to 4, characterized in that: The second mounting portion (12) further comprises a second positioning column (124), wherein the second positioning column (124) is located on a side of the second limiting plate (123) away from the insulating baffle (13); The first conductive sheet (2) has a positioning notch (22), and the positioning notch (22) is adapted to fit the second positioning column (124).

6. The busbar assembly according to any one of claims 2 to 5, characterized in that: The first mounting portion (11) is located on the other side of the supporting platform (121) away from the insulating baffle (13); The first mounting portion (11) comprises a seat body (111) and a first positioning column (112) formed on the seat body (111), wherein the first positioning column (112) is located on a side surface of the seat body (111) away from the supporting platform (121).

7. The busbar assembly according to claim 6, characterized in that: The first mounting portion (11) further comprises a mounting hole (113) formed on the seat body (111); the mounting hole (113) is located on a side surface of the seat body (111) away from the supporting platform (121) and is spaced apart from the first positioning column (112).

8. The busbar assembly according to claim 7, characterized in that: An embedded nut is provided in the mounting hole (113).

9. The busbar assembly according to claim 7 or 8, characterized in that: The first mounting portion (11) comprises two first positioning columns (112) and two mounting holes (113).

10. The busbar assembly according to claim 9, characterized in that: The two first positioning columns (112) are arranged diagonally on the side of the base body (111), and the two mounting holes (113) are arranged diagonally on the side of the base body (111).

11. The busbar assembly according to any one of claims 2 to 5, characterized in that: The first mounting portion (11) is located on the other side of the supporting platform (121) away from the insulating baffle (13); The first mounting portion (11) comprises a seat body (111) and a positioning hole formed on the seat body (111), wherein the positioning hole is located on a side surface of the seat body (111) away from the supporting platform (121).

12. The busbar assembly according to any one of claims 2 to 11, characterized in that: The bearing platform (121) is provided with a first fixing hole (1211), and an embedded nut is provided in the first fixing hole (1211); An electrical connection hole (21) is provided on the first conductive sheet (2), and the electrical connection hole (21) is arranged corresponding to the first fixing hole (1211); The busbar assembly (7) further comprises a first fastener (3), wherein the first fastener (3) passes through the electrical connection hole (21) and is connected to the embedded nut.

13. The busbar assembly according to any one of claims 1 to 12, characterized in that: The busbar assembly (7) further comprises an auxiliary support frame (4), a second conductive sheet (5) and a fuse (6); The auxiliary support frame (4) is used to be mounted on the side plate (81) of the battery module (8), and the fuse (6) is electrically connected between the first conductive sheet (2) and the auxiliary support frame (4) through the second conductive sheet (5).

14. The busbar assembly according to claim 13, characterized in that: The insulating baffle (13) is provided with a limiting hole (131), and the second conductive sheet (5) is passed through the limiting hole (131).

15. The busbar assembly according to any one of claims 1 to 14, characterized in that: The mounting groove is a U-shaped mounting groove.

16. A battery module, characterized in that: It comprises a busbar assembly (7) and a battery cell module (8) as described in any one of claims 1 to 15, wherein the battery cell module (8) comprises a plurality of side panels (81) and a plurality of battery cells (82), wherein the plurality of side panels (81) together enclose a receiving cavity, wherein a plurality of stacked battery cells (82) are installed in the receiving cavity, and two of the busbar assemblies (7) are respectively electrically connected to two of the electrode ears with opposite polarities in the plurality of battery cells (82).

17. The battery module according to claim 16, characterized in that: The battery module (8) further comprises a sampling plate support frame (83) and a sampling circuit board (84); the sampling plate support frame (83) is fixedly connected to the side plate (81); the sampling circuit board (84) is mounted on the sampling plate support frame (83); and the sampling circuit board (84) is electrically connected to the tabs of the plurality of battery cells (82) respectively.

18. The battery module according to claim 16 or 17, characterized in that: The mounting seat (1) is overlapped on the sampling plate support frame (83).

19. The battery module according to claim 16 or 17, characterized in that: The mounting seat (1) is detachably connected to the sampling plate support frame (83).

20. The battery module according to claim 19, characterized in that: The sampling plate support frame (83) is provided with a buckle, and the mounting seat (1) is detachably connected to the sampling plate support frame (83) via the buckle.

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