Integrated busbar assembly and acquisition terminal thereof

Abstract

The invention provides an integrated busbar assembly and an acquisition terminal thereof, and belongs to the technical field of power batteries. The position, opposite to the mounting hole of the busbar, of the welding part of the acquisition terminal is provided with the fixing hole, so that the hot riveting column can be sleeved with the mounting hole in a laminated mode, the acquisition terminal and the busbar can share the hot riveting column to be fixed in a hot riveting mode, the fixing effect is good, no extra hole needs to be formed in the busbar to fix the acquisition terminal, and the cost is reduced. In other words, the fixing of the acquisition terminals and the fixing of the busbars reuse the mounting holes. Therefore, the acquisition terminal provided by the invention not only has a good fixing effect, but also can reduce the adverse effect on the current-carrying capacity of the busbar.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to an integrated busbar assembly and a collection terminal thereof. Background Art

[0002] CCS devices (Cells Contact System─cell connection system) are usually manufactured using two basic structures. One is to use insulating film to encapsulate the collection circuit in one piece by hot pressing; the other is to use a blister insulation board, pre-set a structural cavity, set a mounting column in the cavity, place the bus in the cavity, and then hot-rivet the mounting column to fix the bus with a fixing pin to fix the bus. For CCS devices based on hot pressing technology, the signal collection part can use PCBA and FPC; and for CCS devices based on insulation board hot riveting technology, in addition to PCBA and FPC, the signal collection part can also use wire harness collection, FFC (Flexib le F l at Cab le, soft flat cable) collection, and FDC collection. Therefore, CCS devices based on insulation board hot riveting technology have more flexible applications.

[0003] Compared with the FPC collection method, the CCS device based on the wire harness collection method has a greater current carrying capacity, and the processing and production of the wire harness does not require additional processing equipment such as SMT, and it can realize the function of active balancing, further optimizing the application layer of the battery cell. Therefore, the CCS device based on the wire harness collection has indispensable technical characteristics in the market.

[0004] However, due to the special characteristics of the wire harness (no fixed arrangement structure and certain elastic stress), the wire harness collection method cannot fix the collection terminal to the welding position of the busbar well, or a more complicated and inefficient manual pre-fixing method is required to fix the collection terminal. In order to avoid using manual pre-fixing methods to pre-fix the wire harness collection terminal on the busbar, an existing solution is to design a wire harness collection terminal with a buckle. This structure of the wire harness collection terminal based on buckle pre-fixing is as follows Figure 1As shown in the collection terminal 01, the head end of its welding part is designed by a U-shaped buckle 011, and the U-shaped buckle 011 is buckled into the clamping hole 021 on the bus 02 to pre-fix the collection terminal 01 on the bus 02. The fixed installation hole 022 on the bus 02 is inserted into the fixing column 03 on the blister isolation plate, and the bus 02 is fixed on the blister isolation plate by hot riveting the fixing column 03. However, the additional design of the clamping hole 021 on the bus 02 will affect the cross-sectional area of ​​the bus 02, and then affect its current carrying capacity. In addition, there are tolerances in the structural dimensions of the U-shaped buckle 011 and the clamping hole 021. Sometimes, the U-shaped buckle 011 is difficult to press into the clamping hole 021, resulting in a welding gap. Sometimes, the clamping hole 021 is too large and pops out after being placed in the clamping hole 021, thereby failing to fix the collection terminal 01 well. Summary of the invention

[0005] In order to solve the existing technical problems, the present application provides an integrated busbar assembly and a collection terminal thereof with good pre-fixing effect.

[0006] According to a first aspect of an embodiment of the present application, there is provided a collection terminal of an integrated busbar assembly, comprising a welding portion and a wiring portion connected to the welding portion, wherein the welding portion is used for welding with a busbar, and the wiring portion is used for fixing a collection harness;

[0007] A fixing hole is provided at a position where the welding portion is opposite to the mounting hole of the busbar, and the fixing hole is used to overlap the mounting hole with the heat riveting column of the blister isolation plate to fix the busbar and the collection terminal by heat riveting the heat riveting column.

[0008] Optionally, it further includes an undercut bending portion, wherein the undercut bending portion includes a first bending portion and a second bending portion, so as to cooperate with the heat riveted column after heat riveting to fix the collection terminal on the busbar;

[0009] The first bent portion is bent from the top edge of the fixing hole and sequentially fits the aligned fixing hole side wall and the mounting hole side wall and extends to the bottom edge of the mounting hole;

[0010] The second bending portion is bent from the extension termination end of the first bending portion, and is attached to a surface of the bus bar close to the blister isolation plate and extends a first preset distance.

[0011] Optionally, the fixing hole side wall includes a non-closed annular side wall that fits the heat riveting column and has an opening, and a square side wall that is located at the opening and protrudes in a direction away from the heat riveting column relative to the non-closed annular side wall;

[0012] The square side wall includes a first plane side wall bent from the first side of the opening and extending in a direction away from the heat staking column, a second plane side wall bent from the second side of the opening and extending in a direction away from the heat staking column, and a third plane side wall connected between an extended terminal end of the first plane side wall and an extended terminal end of the second plane side wall;

[0013] The first bent portion sequentially fits the third plane side wall and a portion of the side wall of the mounting hole that is aligned with the third plane side wall and extends to the bottom edge of the mounting hole.

[0014] Optionally, there are multiple undercut bends, and the multiple undercut bends are symmetrically arranged about the thermal rivet column.

[0015] Optionally, the second bent portion is accommodated in a redundant sink groove on the blister isolation plate, so that the bus bar fits with the opposite surface of the blister isolation plate;

[0016] The hot riveting column is arranged in the middle of the redundant sink groove, and the thickness of the second bent portion is equal to or less than the depth of the redundant sink groove.

[0017] Optionally, the collecting terminal further comprises a tail air-avoiding bending portion, wherein the tail air-avoiding bending portion is bent from the tail edge of the welding portion toward a direction away from the bus bar;

[0018] The welding portion is connected to the wiring portion through the tail air-avoiding bending portion.

[0019] Optionally, the tail edge of the welding portion is aligned with the edge of the bus bar, and the collecting terminal further includes an edge bending portion;

[0020] The edge bending portion is bent from the edge of the tail portion and extends to fit the edge of the busbar by a second preset distance, so as to cooperate with the heat riveting column after heat riveting to fix the collection terminal on the busbar.

[0021] Optionally, the edge bending portion is located in the middle of the edge of the tail portion, and the bending portion is connected to the wiring portion at an extended terminal end extending from the edge of the bus bar.

[0022] Optionally, the connection portion is connected to the middle of the edge of the tail portion, and there are multiple edge bending portions, which are symmetrically arranged on both sides of the connection portion.

[0023] According to a second aspect of an embodiment of the present application, there is provided an integrated busbar assembly, comprising a blister isolation plate, a busbar, and any one of the above-mentioned collection terminals;

[0024] The blister isolation plate is provided with a heat riveting column, the bus is provided with a mounting hole opposite to the fixing hole, the mounting hole and the fixing hole are stacked and sleeved into the heat riveting column, so as to fix the bus and the collection terminal based on the heat riveting column after heat riveting.

[0025] As can be seen from the above, the acquisition terminal provided in the embodiment of the present application has a fixing hole corresponding to the mounting hole of the busbar on its welding part, so as to share the hot riveting column with the busbar for hot riveting fixation, and has a good fixing effect, and there is no need to open an additional hole on the busbar to achieve the fixing of the acquisition terminal, that is, the fixing of the acquisition terminal and the fixing of the busbar reuse the mounting hole. Therefore, it has a good fixing effect to reduce the adverse effects caused by laser welding and wire harness stress, and can also reduce the adverse effects on the current carrying capacity of the busbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0027] Figure 1 It is a structural schematic diagram of an existing wiring harness collection terminal based on buckle pre-fixation;

[0028] Figure 2 It is a schematic diagram of the exploded structure of an integrated busbar assembly including the collection terminal provided in the first embodiment of the present application;

[0029] Figure 3 A schematic diagram of the three-dimensional structure of an integrated busbar assembly including the collection terminals provided in the first embodiment of the present application;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the acquisition terminal provided according to the first embodiment of the present application;

[0031] Figure 5 A side view of a collection terminal provided according to the first embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of the structure of using a pressure nozzle to fix the acquisition terminal and the busbar when welding;

[0033] Figure 7 A schematic diagram of the structure of a fixing hole in a collection terminal provided according to the first embodiment of the present application;

[0034] Figure 8 A schematic diagram of a top view of a collection terminal provided according to a second embodiment of the present application;

[0035] Fig. 9 It is a side view structural diagram of a collection terminal provided according to the second embodiment of the present application;

[0036] Fig.10 A schematic diagram of the three-dimensional structure of a collection terminal provided according to the second embodiment of the present application;

[0037] Fig.11 A schematic diagram of the structure of a collection terminal provided according to the third embodiment of the present application;

[0038] Fig.12 It is a schematic diagram of the structure of the collection terminal provided in the third embodiment of the present application being fixed on the busbar based on the first edge bending portion;

[0039] Fig.13 This is a schematic diagram of the structure of a collection terminal provided according to a fourth embodiment of the present application;

[0040] Fig.14 This is a schematic structural diagram of a collection terminal provided in accordance with a fourth embodiment of the present application, which is fixed on a busbar based on a second edge bending portion. DETAILED DESCRIPTION

[0041] The present invention will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are represented by similar reference numerals. For the sake of clarity, the various parts in the accompanying drawings are not drawn to scale. In addition, some well-known parts may not be shown. For the sake of simplicity, the semiconductor structure obtained after several steps can be described in one figure.

[0042] The terms "first", "second", etc. in the embodiments of the specification, claims, and drawings of this application are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order. The terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, including a series of steps or units.

[0043] Figure 2 It is a schematic diagram of the exploded structure of the integrated busbar assembly including the collection terminal 1 provided in the first embodiment of the present application, Figure 3 A schematic diagram of the three-dimensional structure of an integrated busbar assembly including the collection terminal 1 provided in the first embodiment of the present application, Figure 4 Schematic diagram of the three-dimensional structure of the acquisition terminal 1 provided according to the first embodiment of the present application. Figure 5 This is a side view of the collection terminal 1 provided according to the first embodiment of the present application. Figures 2 to 5As shown, the integrated busbar provided in the first embodiment of the present application includes a collection terminal 1, a busbar 2 and a blister isolation plate 3. The collection terminal 1 includes a welding portion 11 and a wiring portion 12 connected to the welding portion 11. The welding portion 11 is used for welding with the busbar 2, and the wiring portion 12 is used for fixing the collection harness (not shown in the figure). A fixing hole 111 is provided at a position opposite to the mounting hole 21 on the busbar 2. The fixing hole 111 is used to be stacked with the mounting hole 21 and inserted into the hot riveting column 31 of the blister isolation plate 3, so as to fix the busbar 2 and the collection terminal 1 by means of hot riveting the hot riveting column 31.

[0044] When the integrated busbar assembly is used in the battery cell connection system, the collection harness can be, but is not limited to, a voltage collection harness for collecting battery voltage. The collection terminal 1 is used to fix the collection harness on the busbar 2 and connect it to the busbar 2. In the first embodiment, the collection terminal 1 can be, but is not limited to, a terminal formed by stamping a nickel sheet, and the busbar 2 can be, but is not limited to, a copper-aluminum bar.

[0045] The welding part 11 is a thin sheet structure, which is convenient for achieving a large area of ​​contact with the surface of the busbar 2, so that the collection terminal 1 and the busbar 2 are firmly welded to reduce the problem of the welding part 11 peeling off from the busbar 2. The wiring part 12 is used to fix the collection harness connection to achieve electrical connection and fixation between the electrical collection terminal 1 and the collection harness, thereby solving the problem of disconnection. The collection harness is used to connect an external sampling device to transmit the sampling information of the battery to the sampling device.

[0046] The mounting hole 21 is provided on the busbar 2 for inserting the heat riveting column 31, so as to fix the busbar 2 on the blister isolation plate 3 by heating the heat riveting column 31. The collection terminal 1 provided in the first embodiment of the present application has a fixing hole 111 provided on its welding portion 11 at a position opposite to the mounting hole 21. After the mounting hole 21 is inserted into the heat riveting column 31, the heat riveting column 31 is not subjected to the heat riveting process first, but the fixing hole 111 of the collection terminal 1 and the mounting hole 21 are stacked and inserted into the same heat riveting column 31, so as to fix the collection terminal 1 on the busbar 2 by using the heat riveting column 31 after the heat riveting process.

[0047] The acquisition terminal 1 provided in the first embodiment of the present application only needs to open a fixing hole 111 corresponding to the mounting hole 21 of the bus 2 on its welding portion 11, so that it can be fixed with the bus 2 by heat riveting by sharing the heat riveting column 31, and the fixing effect is good, and no additional holes (such as Figure 1The collecting terminal 1 is fixed by the clamping hole in the busbar 2, that is, the fixing of the collecting terminal 1 and the fixing of the busbar 2 reuse the mounting hole 21. Therefore, the fixing method of the collecting terminal 1 provided in the first embodiment of the present application is simple and has low processing cost. It has a good fixing effect to reduce the adverse effects caused by laser welding and wire harness stress, and can reduce the adverse effects on the current carrying capacity of the busbar, and facilitate the subsequent processing of the integrated busbar assembly, reducing unnecessary additional process operations.

[0048] As an optional implementation, the collection terminal 1 provided in the first embodiment of the present application further includes an undercut bent portion, which is used to pre-fix the collection terminal 1 on the bus 2 by undercutting it. Figures 2 to 5 As shown, the undercut bend portion may include, but is not limited to, a first undercut bend portion 13, the first undercut bend portion 13 including a first bend portion 131 and a second bend portion 132, the first undercut bend portion 13 is used to cooperate with the hot riveted column 31 after hot riveting to fix the collection terminal 1 on the bus 2. The first bend portion 131 is bent from the top edge of the fixing hole 111, and sequentially fits the aligned fixing hole side wall and the mounting hole side wall to extend to the bottom edge of the mounting hole 21. The second bend portion 132 is bent from the extension termination end of the first bend portion 131, and fits the side of the bus 2 close to the blister isolation plate 3 to extend a first preset distance.

[0049] The fixing hole side wall is the side wall of the fixing hole 111, and the mounting hole side wall is the side wall of the mounting hole 21. At the bend of the first bend portion 131, the fixing hole side wall and the mounting hole side wall are aligned. The fixing hole side wall and the mounting hole side wall may also be referred to as the hole wall of the fixing hole 111 and the hole wall of the mounting hole 21, respectively. In the first embodiment, the extension surfaces of the first bend portion 131 and the second bend portion 132 may be, but are not limited to, respectively planes.

[0050] The first undercut bent portion 13 is used in conjunction with the heat riveting column 31 to fix the collection terminal 1. Compared with the fixing method of using the heat riveting column 31 alone to fix the collection terminal 1 through the mounting hole 21, the fixing effect is better, and the collection terminal 1 can basically not be displaced during the subsequent normal transportation or taking process. In addition, the first undercut bent portion 13 extends downward from the edge of the fixing hole 111 and is undercut at the bottom of the bus 2, which has a good interference desensitization effect, which can effectively reduce the influence of the buckle part on the welding area.

[0051] like Figure 6As shown, it is a schematic diagram of the structure in which the collecting terminal 1 and the bus 2 are fixed by a pressing nozzle when being welded. Since the collecting terminal 1 is fixed on the bus 2 by the first undercut bending portion 13 and the hot rivet column 31, when the welding portion 11 and the welding area of ​​the bus 2 are welded by laser, laser welding can be achieved by only pressing one pressing nozzle on one end of the welding portion 11 close to the wiring portion 12, which effectively simplifies the process flow of the integrated busbar assembly.

[0052] See also Figure 7 As shown, it is a schematic diagram of the structure of the fixing hole 111 in the collection terminal 1 provided according to the first embodiment of the present application. Figure 7 The left and right figures in the figure respectively illustrate fixing holes of different structures. Taking the left figure as an example, the side wall of the fixing hole includes a closed annular side wall 1111 which is in contact with the heat riveting column 31 and has an opening 1110, and a square side wall 1112 which is located at the opening 1110 and protrudes in a direction away from the heat riveting column 31 relative to the non-closed annular side wall 1111. The non-closed annular side wall 1111 and the square side wall 1112 can be connected to form a closed annular side wall, but is not limited to it. The square side wall 1112 includes a first plane side wall 111a which is bent from the first side of the opening 1110 and extends in a direction away from the heat riveting column 31, a second plane side wall 111c which is bent from the second side of the opening 1110 and extends in a direction away from the heat riveting column 31, and a third plane side wall 111b which is connected between the extension terminal end of the first plane side wall 111a and the extension terminal end of the second plane side wall 111c. The first bent portion 131 sequentially adheres to the third planar side wall 111 b and a portion of the side wall of the mounting hole aligned with the third planar side wall 111 b and extends to the bottom edge of the mounting hole 21 .

[0053] In the present application, the extension termination end of each part refers to the corresponding end when the corresponding part terminates in a certain direction, that is, the extension termination end, that is, the termination end of the corresponding part. Specifically, the first planar side wall 111a and the second planar side wall 111c are arranged in parallel, and the angles between the first planar side wall 111a and the second planar side wall 111c and the third planar side wall 111b are 90° respectively. The non-closed annular side wall 1111 can be a cylindrical side wall with at least one opening 1110.

[0054] In the first embodiment, the number of the first undercut bent portions 13 can be multiple, and the multiple first undercut bent portions 13 are symmetrically arranged about the heat riveting column 31. Then the side wall of the fixing hole has multiple openings symmetrically about the heat riveting column 31, such as Figure 7 As shown in the right figure, the side wall of the fixing hole includes two openings 1110 and two corresponding square side walls. The number of the first undercut bent portions 13 is two. The two first undercut bent portions 13 are arranged along the length direction of the acquisition terminal 1 and are symmetrical about the heat riveting column 31. The length direction of the acquisition terminal 1 is the arrangement direction of the welding portion 11 and the wiring portion 12.

[0055] Please continue reading Figure 2 and 3 As shown, in the integrated busbar assembly provided in the first embodiment of the present application, a redundant groove 32 is provided on the blister isolation plate 3, and the hot rivet column 31 is provided in the middle of the redundant groove 32. The thickness of the second bent portion 132 is less than or equal to the groove depth of the redundant groove 32, so that the redundant groove 32 can accommodate the second bent portion 132, so that when the first inverted bent portion 13 is inverted on the bus 2, the bus 2 fits with the opposite surface of the blister isolation plate 3, thereby avoiding the adverse effect of the second bent portion 132 protruding at the bottom of the bus 2 on the fixing effect between the bus 2 and the blister isolation plate 3.

[0056] Please continue reading Figure 4 and Figure 5 As shown, in the first embodiment, the collection terminal 1 provided by the present application further includes a tail air-avoiding bending portion 14, which is bent from the tail edge of the welding portion 11 in a direction away from the busbar 2, and the welding portion 11 is connected to the wiring portion 12 through the tail air-avoiding bending portion 14. By providing the tail air-avoiding bending portion 14 at the tail edge of the welding portion 11, it is helpful to reduce the problem of the collection terminal 1 being raised to form a welding gap due to interference caused by the wiring harness being crimped to the wiring portion 12, thereby improving the process yield of the integrated busbar assembly.

[0057] Figure 8 Schematic diagram of the top view of the collecting terminal 1 provided according to the second embodiment of the present application. Fig. 9 : is a side view structural diagram of a collection terminal 1 provided according to the second embodiment of the present application, Fig.10 Schematic diagram of the three-dimensional structure of the acquisition terminal 1 provided according to the second embodiment of the present application. Figures 8 to 10 As shown, the undercut bend of the collection terminal 1 further includes a second undercut bend 15. The second undercut bend 15 and the first undercut bend 13 are symmetrically arranged on both sides of the heat riveting column 31 in the length direction. Specifically, the second undercut bend 15 starts from the top edge of the fixing hole 111 and bends downward (towards the direction close to the bus 2) and extends in line with the side wall of the fixing hole. The second undercut bend 15 can extend only on the side wall of the fixing hole, or extend from the side wall of the fixing hole to the side wall of the mounting hole, and continue to extend on the side wall of the mounting hole.

[0058] On the basis of the first undercut bend portion 13, a second undercut bend portion 15 is added to further prevent the possible swinging movement of the collection terminal after hot riveting, that is, further improve the fixing effect of the collection terminal 1. In other embodiments, the structure of the second undercut bend portion 15 can also be completely the same as that of the first undercut bend portion 13, which will not be repeated here.

[0059] In some embodiments, the tail edge of the welding portion 11 of the collection terminal 1 provided in the present application is aligned with the edge of the bus 2, and the collection terminal 1 further includes an edge bending portion. The edge bending portion is bent from the tail edge and extends a second preset distance in contact with the edge of the bus to cooperate with the heat riveting column 31 after heat riveting to fix the collection terminal 1 on the bus 2. The heat riveting fixation of the edge bending portion and the heat riveting column 31 can further improve the fixing effect of the collection terminal 1 on the bus 2.

[0060] Fig.11 This is a schematic diagram of the structure of a collection terminal 1 provided according to the third embodiment of the present application. Fig.12 This is a schematic diagram of the structure of the collection terminal 1 provided in the third embodiment of the present application, which is fixed on the busbar 2 based on the first edge bending portion 16. Fig.11 and Fig.12 As shown, in the third embodiment, the wiring portion 12 is connected to the middle of the edge of the tail edge of the welding portion 11, and the edge bending portion includes at least one or two first edge bending portions 16, and the first edge bending portions 16 are symmetrically arranged on both sides of the wiring portion 12 to increase the effect of the first edge bending portions 16 stabilizing the collection terminal 1. In other embodiments, the number of the first edge bending portions 16 can also be other numbers, and multiple first edge bending portions can be, but are not limited to, symmetrically arranged on both sides of the wiring connection portion 12.

[0061] Fig.13 This is a structural diagram of a collection terminal 1 provided according to a fourth embodiment of the present application. Fig.14 This is a schematic diagram of the structure of the collection terminal 1 provided in the fourth embodiment of the present application, which is fixed on the busbar 2 based on the second edge bending portion 17. Fig.13 and Fig.14 As shown, in the fourth embodiment, the edge bending portion includes a second edge bending portion 17, which is bent from the middle of the tail edge of the welding portion 11 toward the direction close to the bus 2, and extends a second preset distance in line with the tail edge of the welding portion 11 and the edge of the bus 2, and the second edge bending portion 17 is in line with the extension end of the edge of the bus 2 and is connected to the wiring portion 12. The second preset distance is greater than the thickness of the welding portion 11, and less than the sum of the thickness of the welding portion 11 and the bus 2, so that the second edge bending portion 17 can cooperate with the hot riveting column 31 to fix the collection terminal 1 on the bus 2 well.

[0062] In the first and second embodiments, the shape of the fixing hole 111 is a special-shaped hole, that is, a non-standard circular hole. In the third and fourth embodiments, the shape of the fixing hole 111 can be a circular hole, specifically a circular hole that cooperates with the hot riveting column 31, so that the collection terminal 1 and the bus 1 can be fixed at the same time based on the same hot riveting process. The fixing process is simple, the effect is good, and the cost is low. Only a hole corresponding to the mounting hole 32 can be punched on the welding part 11. The welding part 11, the undercut bent buckle (or the edge bent part) and the wiring part 12 in the collection terminal 1 can be integrally formed by stamping based on a nickel sheet, so that the process is simple.

[0063] In addition, the present application also provides a Figure 2 and Figure 3 The integrated busbar shown includes the collection terminal 1, busbar 2 and blister isolation plate 3 provided in accordance with any embodiment of the present application, the blister isolation plate 3 is provided with a heat riveting column 31, the busbar 2 is provided with a mounting hole 21 opposite to the fixing hole 111, the mounting hole and the fixing hole 111 are stacked and inserted into the heat riveting column 31, so as to fix the busbar 2 and the collection terminal 1 at the same time based on the heat riveted column 31 after heat riveting. The integrated busbar assembly provided in the embodiment of the present application can achieve basically the same technical effect as the collection terminal 1 provided in the embodiment of the present application, and will not be repeated here.

[0064] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A collection terminal of an integrated busbar assembly, characterized in that: It includes a welding part and a wiring part connected to the welding part, the welding part is used to be welded with the bus bar, and the wiring part is used to fix the collection harness; A fixing hole is provided at a position where the welding portion is opposite to the mounting hole of the busbar, and the fixing hole is used to overlap the mounting hole with the heat riveting column of the blister isolation plate to fix the busbar and the collection terminal by heat riveting the heat riveting column.

2. The collection terminal according to claim 1, characterized in that: It also includes an undercut bending portion, wherein the undercut bending portion includes a first bending portion and a second bending portion, so as to cooperate with the hot riveting column after hot riveting to fix the collection terminal on the busbar; The first bent portion is bent from the top edge of the fixing hole and sequentially fits the aligned fixing hole side wall and the mounting hole side wall and extends to the bottom edge of the mounting hole; The second bending portion is bent from the extension termination end of the first bending portion, and is attached to a surface of the bus bar close to the blister isolation plate and extends a first preset distance.

3. The collection terminal according to claim 2, characterized in that: The fixing hole side wall comprises a non-closed annular side wall which is in contact with the heat riveting column and has an opening, and a square side wall which is located at the opening and protrudes in a direction away from the heat riveting column relative to the non-closed annular side wall, and the non-closed annular side wall and the square side wall are connected to form a closed annular side wall; The square side wall includes a first plane side wall bent from the first side of the opening and extending in a direction away from the heat staking column, a second plane side wall bent from the second side of the opening and extending in a direction away from the heat staking column, and a third plane side wall connected between an extended terminal end of the first plane side wall and an extended terminal end of the second plane side wall; The first bending portion sequentially fits the third plane side wall and a portion of the side wall of the mounting hole aligned with the third plane side wall and extends to the bottom edge of the mounting hole.

4. The acquisition terminal according to claim 2, characterized in that: There are multiple undercut bends, and the multiple undercut bends are symmetrically arranged about the thermal rivet column.

5. The collection terminal according to claim 2, characterized in that: The second bent portion is accommodated in a redundant recess on the blister isolation plate, so that the bus bar is in contact with the opposite surface of the blister isolation plate; The hot riveting column is arranged in the middle of the redundant sink groove, and the thickness of the second bent portion is equal to or less than the depth of the redundant sink groove.

6. The collection terminal according to claim 2, characterized in that: It also includes a tail air-avoiding bending portion, wherein the tail air-avoiding bending portion is bent from the tail edge of the welding portion toward a direction away from the bus bar; The welding portion is connected to the wiring portion through the tail air-avoiding bending portion.

7. The collection terminal according to claim 1, characterized in that: The tail edge of the welding portion is aligned with the edge of the bus bar, and the collecting terminal further includes an edge bending portion; The edge bending portion is bent from the edge of the tail portion and extends to fit the edge of the busbar by a second preset distance, so as to cooperate with the heat riveting column after heat riveting to fix the collection terminal on the busbar.

8. The collection terminal according to claim 7, characterized in that: The edge bending portion is located in the middle of the edge of the tail portion, and the bending portion is attached to an extended terminal end extending from the edge of the bus bar and is connected to the wiring portion.

9. The collection terminal according to claim 7, characterized in that: The connection portion is connected to the middle of the edge of the tail portion, and there are multiple edge bending portions, which are symmetrically arranged on both sides of the connection portion.

10. An integrated busbar assembly, characterized in that: It comprises a blister isolation plate, a bus bar and a collection terminal as claimed in any one of claims 1 to 9; The blister isolation plate is provided with a heat riveting column, the bus is provided with a mounting hole opposite to the fixing hole, the mounting hole and the fixing hole are stacked and sleeved into the heat riveting column, so as to fix the bus and the collection terminal based on the heat riveting column after heat riveting.

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