Busbar support, busbar mounting structure, battery module and battery

Abstract

The application relates to the technical field of batteries and discloses a conductive sheet, a busbar support, a busbar mounting structure, a battery module and a battery. The conductive sheet comprises a conductive sheet body, the conductive sheet body comprises a first connecting plate and a second connecting plate, the angle between the first connecting plate and the second connecting plate is greater than 0 DEG and smaller than 180 DEG, the surface of the first connecting plate is used for being parallel to the extension direction of the tab of a single battery, so that the tab can be attached to and welded with the surface of the first connecting plate, the second connecting plate is used for being fixedly connected with a busbar, and the second connecting plate is provided with a positioning matching part used for positioning the mounting position of the conductive sheet, so that the surface of the first connecting plate is parallel to the extension direction of the tab, thereby the tab can be attached to and welded with the surface of the first connecting plate without being bent, the planeness error generated in the tab bending process is avoided, the welding quality is improved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a conductive sheet, a busbar support, a busbar mounting structure, a battery module and a battery. BACKGROUND

[0002] In related technologies, the series-parallel electrical connection of soft-pack single batteries is usually achieved by connecting the tabs and busbars. The existing connection method is to pass the tabs through the busbars provided with slot holes, then bend and attach the tabs on the busbars, weld, and then electrically connect the busbars with the bent tabs. This connection method needs to add a tab bending process, which not only reduces the production efficiency, but also easily causes flatness errors in the bending process of the tabs, resulting in poor attachment of the tabs and busbars and reducing the welding quality. SUMMARY

[0003] The present application provides a conductive sheet, a busbar support, a busbar mounting structure, a battery module and a battery to improve the welding quality and production efficiency.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] According to the first aspect of the present application, a conductive sheet is provided, comprising a conductive sheet body, the conductive sheet body comprising a first connecting plate and a second connecting plate, the angle between the first connecting plate and the second connecting plate being greater than 0° and less than 180°, the plate surface of the first connecting plate being used to be parallel to the extension direction of the tab of a single battery, so that the tab of the single battery can be attached and welded with the plate surface of the first connecting plate, the second connecting plate being used to be fixedly connected with a busbar, and the second connecting plate being provided with a positioning matching part for positioning the installation position of the conductive sheet.

[0006] The conductive sheet provided by the present application can position the installation position of the conductive sheet by providing a positioning matching part on the second connecting plate, ensure that the plate surface of the first connecting plate can be parallel to the extension direction of the tab of a single battery, so that the tab can be attached and welded with the plate surface of the first connecting plate without bending the tab, avoid the flatness errors caused in the tab bending process, and further avoid the problem of poor attachment of the tab and the conductive sheet, improve the welding quality, and at the same time, since the tab bending process is omitted, the production efficiency is improved. Since the angle between the first connecting plate and the second connecting plate is greater than 0° and less than 180°, that is, the first connecting plate and the second connecting plate are not coplanar, it is convenient to fixedly connect the busbar with the second connecting plate, that is, the busbar and the tab are not in the same plane, so as to realize the assembly of the battery module.

[0007] According to a second aspect of the present application, a busbar support is provided, comprising a support body, the support body being provided with a positioning portion and a mounting position for mounting the conductive sheet, the positioning portion being matched with the positioning matching portion, so that the conductive sheet is fixedly mounted on the mounting position, and the plate surface of the first connecting plate can be parallel to the extension direction of the tab of the single battery.

[0008] The busbar support provided by the present application, by providing the positioning portion and the mounting position for mounting the conductive sheet provided by the present application on the support body, in use, the conductive sheet is mounted on the mounting position through the cooperation of the positioning portion and the positioning matching portion, so that the plate surface of the first connecting plate can be parallel to the extension direction of the tab of the single battery, thereby avoiding the flatness error generated in the tab bending process, thereby avoiding the problem that the tab and the conductive sheet are not tightly fitted, improving the welding quality, and at the same time, since the tab bending process is omitted, the production efficiency is improved.

[0009] According to a third aspect of the present application, a busbar mounting structure is provided, comprising the conductive sheet and the busbar support, the positioning portion being matched with the positioning matching portion, so that the conductive sheet is fixedly mounted on the mounting position, and the plate surface of the first connecting plate can be parallel to the extension direction of the tab of the single battery.

[0010] The busbar mounting structure provided by the present application, since the conductive sheet and the busbar support provided by the present application are used, the tab can be fitted and welded with the plate surface of the first connecting plate without bending the tab, avoiding the flatness error generated in the tab bending process, thereby avoiding the problem that the tab and the conductive sheet are not tightly fitted, improving the welding quality, and at the same time, since the tab bending process is omitted, the production efficiency is improved. In use, the conductive sheet is mounted on the mounting position through the cooperation of the positioning portion and the positioning matching portion, so that the plate surface of the first connecting plate is parallel to the extension direction of the tab of the single battery, the tab is fitted and welded with the plate surface of the first connecting plate, and then the busbar is fixedly connected with the second connecting plate.

[0011] According to a fourth aspect of the present application, a battery module is provided, comprising a single battery, a busbar and the busbar mounting structure, the positioning portion being matched with the positioning matching portion, so that the conductive sheet is fixedly mounted on the mounting position, and the plate surface of the first connecting plate can be parallel to the extension direction of the tab of the single battery, the tab of the single battery is fitted and welded with the first connecting plate, and the busbar is fixedly connected with the second connecting plate.

[0012] The battery module provided by the application can make the lug and the plate surface of the first connecting plate adhere and be welded without bending the lug, avoids the flatness error generated in the lug bending process, thereby avoiding the problem that the lug and the conductive sheet do not adhere tightly, improves the welding quality, and simultaneously, the production efficiency is improved due to the omission of the lug bending process. In use, the conductive sheet is installed on the installation position through the cooperation of the positioning portion and the positioning cooperation portion, the plate surface of the first connecting plate is parallel to the extension direction of the lug of the single battery, the lug and the plate surface of the first connecting plate are adhered and welded, then the bus bar is fixedly connected with the second connecting plate, and the series and parallel connection of the single batteries in the battery module is realized.

[0013] According to a fifth aspect of the application, a battery is provided, comprising the battery module.

[0014] The battery provided by the application improves the quality and production efficiency of the battery due to the use of the battery module provided by the application. BRIEF DESCRIPTION OF DRAWINGS

[0015] For better understanding of the present disclosure, reference can be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and relevant elements can be omitted in order to emphasize and clarify the technical features of the present disclosure. In addition, relevant elements or components can have different settings as known in the art. Furthermore, in the drawings, the same reference numerals represent the same or similar components throughout the drawings. Among them:

[0016] Figure 1 The structure schematic view of the conductive sheet provided for the embodiment;

[0017] Figure 2 The structure schematic view of the conductive sheet cooperating with the single battery and the bus bar provided for the embodiment;

[0018] Figure 3 The first structure schematic view of the bus bar support provided for the embodiment;

[0019] Figure 4 The structure schematic view of the bus bar support shown in the middle I is a partial enlarged view; Figure 3

[0020] The structure schematic view of the bus bar support shown in the middle II is a partial enlarged view; Figure 5 Figure 3 The structure schematic view of the bus bar support shown in the middle III is a partial enlarged view;

[0021] Figure 6 The structure schematic view of the bus bar support shown in the middle IV is a partial enlarged view; Figure 3 The structure schematic view of the bus bar support shown in the middle V is another view of the structure schematic view;

[0022] Figure 7 The second structure schematic view of the bus bar support provided for the embodiment;​

[0023] Figure 8 A third structure schematic diagram of the busbar support provided in the embodiment;

[0024] Figure 9 A fourth structure schematic diagram of the busbar support provided in the embodiment;

[0025] Figure 10 A fifth structure schematic diagram of the busbar support provided in the embodiment;

[0026] Figure 11 An exploded view of two adjacent busbar supports in the embodiment;

[0027] Figure 12 A structure schematic diagram of the busbar mounting structure provided in the embodiment;

[0028] Figure 13 An exploded view of the busbar mounting structure and the battery provided in the embodiment;

[0029] Figure 14 A structure schematic diagram of the battery module provided in the embodiment;

[0030] Figure 15 A partial enlarged view of the battery module provided in the embodiment;

[0031] Figure 16 An exploded view of the battery module provided in the embodiment (the end plate is not shown);

[0032] Figure 17 A schematic diagram of the battery module provided in the embodiment;

[0033] Figure 18 A schematic diagram of the busbar and the conductive sheet in a welded state in the embodiment.

[0034] The following is a description of the reference signs:

[0035] 10-conductive sheet; 11-first connecting plate; 111-first surface; 12-second connecting plate; 121-first positioning groove; 122-second positioning groove; 123-second surface; 20-busbar support; 21-support body; 211-horizontal plate; 212-vertical plate; 213-reinforcing rib plate; 214-side plate; 215-first boss; 216-second boss; 217-fixing buckle; 218-elastic buckle; 2181-limiting protrusion; 22-connecting part; 221-protruding part; 222-limiting boss; 23-isolation plate; 30-monobloc battery; 31-first tab; 32-second tab; 40-busbar; 50-end plate; 60-welding seam. DETAILED DESCRIPTION

[0036] The technical solutions in the example embodiments of the present disclosure will be described clearly and completely in combination with the accompanying drawings of the example embodiments of the present disclosure. The example embodiments described herein are only for illustrative purposes, and are not intended to limit the protection scope of the present disclosure, and therefore it should be understood that various modifications and changes can be made to the example embodiments without departing from the protection scope of the present disclosure.

[0037] In the description of the present disclosure, unless explicitly specified and limited, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two; the term "and / or" includes any combination and all combinations of one or more associated listed items. In particular, referring to "the" object or "one" object is also intended to represent one of the possible multiple such objects.

[0038] Unless otherwise specified or stated, the terms "connection", "fixation" and the like should be interpreted broadly, for example, "connection" can be fixed connection, or detachable connection, or integrally connected, or electrically connected, or signal connected; "connection" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0039] Further, in the description of the present disclosure, it should be understood that the orientation words such as "upper", "lower", "inner", "outer" described in the example embodiments of the present disclosure are described with the angle shown in the drawings, and should not be understood as limiting the example embodiments of the present disclosure. It should also be understood that in the context, when referring to one element or feature connected to another element (one or more) "on", "under", or "inside", "outside", it can not only be directly connected to another (one or more) element "on", "under", or "inside", "outside", but also indirectly connected to another (one or more) element "on", "under", or "inside", "outside" through an intermediate element.

[0040] In a first aspect, the present embodiment provides a conductive sheet 10. Referring to Figure 1 and Figure 2 As shown in the drawings, the present embodiment provides a conductive sheet 10, which comprises a conductive sheet body, the conductive sheet body comprises a first connecting plate 11 and a second connecting plate 12, the angle between the first connecting plate 11 and the second connecting plate 12 is greater than 0° and less than 180°, the plate surface of the first connecting plate 11 is used to be parallel to the extension direction of the tab of the single battery 30, so that the tab of the single battery 30 can be fitted and welded with the plate surface of the first connecting plate 11, the second connecting plate 12 is used to be fixedly connected with the busbar 40, and the second connecting plate 12 is provided with a positioning matching part for positioning the installation position of the conductive sheet 10.

[0041] The conductive sheet 10 provided by the embodiment can position the mounting position of the conductive sheet by arranging the positioning fitting part on the second connecting plate, ensure that the plate surface of the first connecting plate 11 can be parallel to the extension direction of the tab of the single battery 30, so that the tab can be adhered and welded with the plate surface of the first connecting plate 11 without bending the tab, avoid the flatness error generated in the tab bending process, and further avoid the problem that the tab is not tightly adhered with the conductive sheet, improve the welding quality, and at the same time, since the tab bending process is omitted, the production efficiency is improved. Since the angle between the first connecting plate 11 and the second connecting plate 12 is greater than 0° and less than 180°, that is, the first connecting plate 11 and the second connecting plate 12 are not coplanar, the bus bar and the second connecting plate 12 are fixedly connected, that is, the bus bar 40 and the tab are not in the same plane, so as to realize the assembly of the battery module.

[0042] In the embodiment, the extension direction of the tab refers to the direction of the surface of the tab from the end close to the battery shell to the end away from the battery shell. For example, as shown in Figure 2 The tab includes a first tab 31 and a second tab 32, and the extension directions of the first tab 31 and the second tab 32 are consistent. The arrow direction M represents the extension direction of the tab, and the surface of the tab is adhered and welded with the surface of the first connecting plate 11 close to the tab. Since the tab does not need to be bent, the flatness of the tab is easy to guarantee, and welding defects such as virtual welding and void are not easy to occur. In addition, by welding the tab on the first connecting plate 11 and welding the bus bar 40 on the second connecting plate 12, it is not necessary to arrange a slot hole on the bus bar 40, so as to guarantee the large flow area of the bus bar and allow large current to pass through.

[0043] For example, the positioning fitting part includes a positioning groove arranged at both ends of the second connecting plate 12. Specifically, as shown in Figure 1 The positioning groove includes a first positioning groove 121 arranged at one end of the second connecting plate 12 and a second positioning groove 122 arranged at the other end of the second connecting plate 12.

[0044] In one embodiment, the material of the conductive sheet 10 is metal, for example, aluminum.

[0045] In one embodiment, as shown in Figure 1 The conductive sheet 10 is in the shape of an L-shaped bent plate, and the angle between the plate surface of the first connecting plate 11 and the plate surface of the second connecting plate 12 is 90°.

[0046] For example, the first connecting plate 11 and the second connecting plate 12 are integrally formed, which not only facilitates processing, but also can improve the structural strength of the conductive sheet.

[0047] The connection between the first connecting plate 11 and the second connecting plate 12 is smooth, which can avoid stress concentration and reduce the risk of fracture of the conductive sheet.

[0048] The angle between the plate surface of the first connecting plate 11 and the plate surface of the second connecting plate 12 is 90°. After the tab is welded to the first connecting plate 11 and the bus bar 40 is welded to the second connecting plate 12, the bus bar 40 is perpendicular to the first tab and the second tab.

[0049] In an embodiment, referring to Figure 1 The first surface 111 of the first connecting plate 11 is used to fit and weld with the tab of the single battery, and the second surface 123 of the second connecting plate 11 is used to weld with the bus bar, wherein the first surface 111 and the second surface 123 are smooth. That is, the bus bar and the tab are welded on the continuously arranged surface, which includes the first surface and the second surface, and in this embodiment, the first surface and the second surface are perpendicular.

[0050] In this embodiment, the electrical connection of the tab, the conductive piece and the bus bar is achieved by laser welding.

[0051] In this embodiment, the first surface of the first connecting plate is used to fit and weld with the tab of the single battery, and the second surface of the second connecting plate is used to weld with the bus bar, which is to facilitate the positioning of the conductive sheet by the bus bar support. The structure of the bus bar support will be described in detail below.

[0052] In a second aspect, the embodiment provides a bus bar support 20. Referring to Figures 3 to 11 The bus bar support 20 includes a support body 21, which is provided with a positioning portion and a mounting position for mounting the conductive sheet 10 provided in this embodiment. The support body 21 is provided with a positioning portion, which cooperates with a positioning cooperating portion to fix the conductive sheet 10 to the mounting position, and to make the plate surface of the first connecting plate 11 parallel to the extension direction of the tab of the single battery 30.

[0053] The bus bar support 20 provided in this embodiment is provided with a positioning portion and a mounting position for mounting the conductive sheet 10 provided in this embodiment on the support body. In use, the conductive sheet 10 is mounted on the mounting position through the cooperation of the positioning portion and the positioning cooperating portion, so that the plate surface of the first connecting plate 11 can be parallel to the extension direction of the tab of the single battery 30. Thus, the tab can be fitted and welded with the plate surface of the first connecting plate 11 without bending the tab, avoiding the flatness error generated in the tab bending process, thereby avoiding the problem of poor fit between the tab and the conductive sheet, improving the welding quality. At the same time, since the tab bending process is omitted, the production efficiency is improved.

[0054] In an embodiment, referring toFigure 3 As shown, the bracket body 21 comprises a long strip-shaped plate structure, which comprises a transverse plate 211 and two vertical plates 212 fixedly connected on both sides of the transverse plate 211, and a reinforcing rib plate 213 arranged between the two vertical plates 212 and located below the mounting position for supporting the conductive sheet. Both ends of the long strip-shaped plate structure are provided with a connecting portion 22, which is provided with a passage for the fastener to pass through, so as to fixedly connect a plurality of bus bar brackets 20 together.

[0055] As shown, the connecting portion 22 is integrally formed with the bracket body 21, which not only facilitates production and processing, but also improves the overall structural strength of the bus bar bracket 20, thereby ensuring that the conductive sheet 10 can be fixed firmly, and further improving the safety of the battery module.

[0056] In one embodiment, referring to Figure 3 and Figure 11 As shown, one side of the connecting portion 22 is provided with a protruding portion 221, and the protruding portion 221 of one of the two adjacent bus bar brackets 20 can be limited in the passage of the connecting portion 22 of the other bus bar bracket 20.

[0057] As shown, when the number of bus bar brackets 20 is multiple, a plurality of bus bar brackets 20 are fixedly connected together by using fasteners such as bolts and nuts. The protruding portion 221 is annular or open annular, and the protruding portion 221 can be a hollow cylindrical structure, the inner cavity of the hollow cylindrical structure is in communication with the passage, of course, the protruding portion 221 can also be a hollow prism structure. Referring to Figure 6 and Figure 11 As shown, the protruding portion 221 protrudes from one end of the connecting portion 22, and the inner wall of the passage is provided with a limiting boss 222 for abutting with the end of the protruding portion 221 on the adjacent bus bar bracket 20. As shown, a long bolt is used to pass through the passage of the connecting portion 22 on each bus bar bracket 20, and then cooperates with a nut to fixedly connect all the bus bar brackets 20 together.

[0058] In one embodiment, referring to Figure 13 As shown, the number of mounting positions is two, and each mounting position corresponds to one conductive sheet 10, one of which is used to connect with the first tab 31 of the single battery 30, and the other is used to connect with the second tab 32 of the single battery 30, wherein the polarity of the first tab 31 is opposite to that of the second tab 32.

[0059] As shown, the polarity of the first tab 31 is positive, and the polarity of the second tab 32 is negative. The first tab 31 and the second tab 32 are drawn out from the same side of the single battery 30, which facilitates the connection of the conductive sheet with the tab.

[0060] In the embodiment, the two mounting positions are spaced along the length direction of the bracket body 21, that is, the two mounting positions are spaced along the length direction of the transverse plate 211. Specifically, as shown in Figure 3 and Figure 5 , the two side plates 214 are arranged at positions between the two ends of the transverse plate 211, one of the two side plates 214 and the connecting portion 22 close to the one of the two side plates 214 and the vertical plate 212 between the one of the two side plates 214 and the connecting portion 22 define a mounting position, and the other of the two side plates 214 and the connecting portion 22 close to the other of the two side plates 214 and the vertical plate 212 between the other of the two side plates 214 and the connecting portion 22 define another mounting position.

[0061] For example, the height of the connecting portion 22 is higher than the height of the vertical plate 212, the positioning portion can be arranged on the side wall of the connecting portion 22 and the side plate 214 of the bracket body 21, and the positioning matching portion is arranged on the second connecting plate 12. After assembly, as shown in Figure 12 , the second connecting plate 12 is located above the mounting position, and the first connecting plate 11 is located on the side of one of the vertical plates 212 away from the other of the vertical plates 212.

[0062] In one embodiment, the positioning portion includes a positioning boss, and the positioning matching portion includes a positioning slot, the positioning boss is clamped in the positioning slot to limit the movement of the conductive sheet 10 in the first direction and the second direction, wherein the first direction is parallel to the length direction of the conductive sheet 10, and the second direction is parallel to the width direction of the positioning slot.

[0063] As shown in Figure 12 , the arrow direction X represents the first direction, and the arrow direction Y represents the second direction. When installing the conductive sheet, the conductive sheet can be installed from the top to the bottom of the bracket body 21 to the mounting position. When installing, the positioning slot is aligned with the positioning boss, and then the conductive sheet is moved towards the bracket body 21 until the second connecting plate 12 is located on the mounting position. At this time, due to the cooperation of the positioning boss and the positioning slot, the conductive sheet cannot move in the first direction and the second direction, and the position of the conductive sheet is preliminarily fixed.

[0064] In one embodiment, the positioning boss includes a first boss 215 and a second boss 216, and the first boss 215 and the second boss 216 are oppositely arranged along the first direction.

[0065] In the embodiment, as shown in Figures 3 to 5 , the first boss 215 is arranged on the side wall of the connecting portion 22, and the second boss 216 is arranged on the side plate 214 of the bracket, and the first boss 215 and the second boss 216 are oppositely arranged along the first direction.

[0066] In this embodiment, the first protrusion 215 and the second protrusion 216 not only preliminarily fix the position of the conductive sheet 10, but also position the laser welding location. Specifically, see [link to documentation]. Figure 18 As shown, when welding busbar 40, the positions of the first boss 215 and the second boss 216 are easily identified by the vision system of the laser welding equipment, thereby automatically identifying the welding position, realizing the automation of laser welding, and improving welding efficiency and yield. The line connecting the first boss 215 and the second boss 216 forms the weld seam 60.

[0067] In one embodiment, to further fix the position of the conductive sheet 10, the positioning part also includes a latch, see [link to relevant documentation]. Figure 5 As shown, the buckle has a limiting protrusion 2181 that can abut against the surface of the second connecting plate 12 away from the single cell 30 to restrict the movement of the conductive sheet 10 along a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

[0068] See Figure 12 As shown, the arrow direction Z indicates the third direction. Specifically, after the conductive sheet 10 is installed in place, the limiting boss 222 abuts against the surface of the second connecting plate 12 away from the single cell 30, thereby pressing and fixing the second connecting plate 12 in the installation position to restrict the conductive sheet 10 from moving in the direction of arrow Z.

[0069] In one embodiment, the bracket body 21 is provided with two mounting positions, each mounting position is provided with a positioning boss and a buckle; the buckle includes an elastic buckle 218 and a fixed buckle 217, the elastic buckle 218 and the fixed buckle 217 are arranged opposite to each other along a first direction.

[0070] The following explanation uses one of the installation positions as an example.

[0071] Specifically, see Figures 3 to 5 as well as Figure 12As shown, the positioning boss includes a first boss 215 and a second boss 216, the first boss 215 and the fixed buckle 217 are arranged on the side wall of the connecting part 22, and the second boss 216 is arranged on the side plate 214 of the bracket. The elastic buckle 218 is located on the same side of the mounting position as the second boss 216. In order to realize the elastic deformation of the elastic buckle 218, one end of the elastic buckle 218 away from the limiting protrusion 2181 is connected with the transverse plate 211. When the conductive sheet 10 moves downward from the upper side of the bracket body 21 and passes through the fixed buckle 217 and the limiting protrusion 2181 of the elastic buckle 218, the elastic buckle 218 can be elastically deformed, and the second connecting plate 12 is moved to the lower side of the limiting protrusion 2181. When the conductive sheet is installed in place, that is, the second connecting plate 12 abuts against the mounting position, the elastic buckle 218 returns to the original state, and the limiting protrusion 2181 of the fixed buckle 217 and the elastic buckle 218 abuts against the surface of the second connecting plate 12 away from the monomer battery 30, so as to press and fix the second connecting plate 12 on the mounting position. At the same time, since the first boss 215 and the second boss 216 are matched with the corresponding positioning grooves respectively, the conductive sheet 10 will not be displaced in the first direction, the second direction and the third direction, so as to ensure the firmness of the conductive sheet 10.

[0072] In one embodiment, the busbar bracket 20 further comprises an isolation plate 23; the isolation plate 23 is located on one side of the bracket body 21; the number of mounting positions is two, and at least one mounting position is provided with the isolation plate 23. The bracket body 21 has oppositely arranged first and second long side sides, wherein the first long side side is the side of the bracket body 21 away from the protruding part 221, and the second long side side is the side of the bracket body 21 close to the protruding part 221. The isolation plate 23 is located on the first long side side. The isolation plate 23 is integrally formed with the bracket body 21. Specifically, the isolation plate 23 is integrally formed with one of the vertical plates. For example, the isolation plate 23 is integrally formed with the vertical plate away from the protruding part 221, and the isolation plate 23 can be coplanar with the vertical plate.

[0073] Specifically, the busbar bracket 20 provided in the embodiment mainly has five forms:

[0074] Referring to Figure 3 As shown, the first form is that one isolation plate 23 is arranged on each of the two mounting positions of the bracket body 21, and the two isolation plates 23 are located on the same side of the bracket body 21;

[0075] Referring to Figure 7 As shown, the second form is a busbar bracket 20 without an isolation plate 23;

[0076] Referring to Figure 8 As shown, the third form is that one mounting position of the bracket body 21 is provided with an isolation plate 23, and the isolation plate 23 is located on the first long side side of the bracket body 21;

[0077] Referring to Figure 9 As shown, the fourth type is that another mounting position of the bracket body 21 is provided with an isolation plate 23, and the isolation plate 23 is located on the first long side of the bracket body 21.

[0078] Referring to Figure 10 As shown, the fifth type is that the busbar bracket 20 is not provided with an isolation plate 23, and the mounting hole for mounting the module collection wire harness connector is arranged on the transverse plate between two mounting positions.

[0079] In order to facilitate the selection of the required form of the busbar bracket 20, the above-mentioned five forms of the busbar bracket 20 can be numbered in turn as A, B, C, D, and E. The numbering can be integrated with the bracket body 21 when the busbar bracket 20 is manufactured, or can be marked on the busbar bracket 20 by labeling and the like in the later period. The form of the numbering is not limited to A, B, C, D, and E, etc. letters, but can also be numbers or other symbols. Of course, the numbering can also not be formed on the busbar bracket.

[0080] The busbar brackets numbered A and E are connected with the outermost single batteries respectively, and the busbar brackets numbered B, C, and D are arranged in a certain number and distribution order, so that the mounting areas for mounting the busbars are alternately arranged on the upper part of the battery module. Since each single battery corresponds to a busbar bracket, the area enclosed by the busbar brackets can contain any number of single batteries, that is, the module in any series-parallel form can be formed by the combination of the busbar brackets, for example, Figure 17 As shown, the battery module is a 1P16S battery module, that is, the battery module includes 16 single batteries connected in series. Therefore, in addition to the two forms of the busbar brackets on the outermost sides which are relatively fixed, only three forms of the busbar brackets need to be designed and developed, so that the battery module in any series-parallel form can be combined, which greatly reduces the design and development period and cost of the module.

[0081] Of course, the form of the busbar bracket is not limited to the above-mentioned five forms, but other forms of the busbar bracket can also be selected according to the actual production and processing needs.

[0082] In the embodiment, the positioning boss and the buckle are integrally formed with the bracket body 21.

[0083] In one embodiment, the material of the busbar bracket 20 is plastic. For example, engineering plastic alloy (PC+ABS), polycarbonate (PC), or a composite material of polyimide and glass fiber, etc.

[0084] In a third aspect, the embodiment provides a busbar mounting structure. Referring to Figure 12As shown, the busbar mounting structure includes the conductive sheet 10 provided by the embodiment and the busbar support 20 provided by the embodiment, the positioning part and the positioning matching part are matched to enable the conductive sheet 10 to be fixedly mounted at the mounting position and enable the plate surface of the first connecting plate 11 to be parallel to the extension direction of the tab of the single battery 30.

[0085] The busbar mounting structure provided by the embodiment, since the conductive sheet 10 and the busbar support 20 provided by the embodiment are used, the tab can be bonded and welded with the plate surface of the first connecting plate 11 without being bent, the flatness error generated in the tab bending process is avoided, thereby avoiding the problem that the tab is not tightly bonded with the conductive sheet, improving the welding quality, and at the same time, since the tab bending process is omitted, the production efficiency is improved. In use, the conductive sheet is mounted on the mounting position through the cooperation of the positioning part and the positioning matching part, the plate surface of the first connecting plate 11 is parallel to the extension direction of the tab of the single battery 30, the tab is bonded and welded with the plate surface of the first connecting plate 11, and then the busbar is fixedly connected with the second connecting plate 12.

[0086] In one embodiment, the positioning part includes a positioning boss, the positioning matching part includes a positioning slot, and the positioning boss is clamped in the positioning slot to limit the movement of the conductive sheet 10 in the first direction and the second direction, wherein the first direction is parallel to the length direction of the conductive sheet 10, and the second direction is parallel to the width direction of the positioning slot.

[0087] In one embodiment, the positioning boss includes a first boss 215 and a second boss 216, the first boss 215 and the second boss 216 are oppositely arranged along the first direction; the positioning matching part includes a positioning slot, the positioning slot includes a first positioning slot 121 and a second positioning slot 122, the first positioning slot 121 and the second positioning slot 122 are oppositely arranged along the length direction of the second connecting plate 12; the first boss 215 is clamped in the first positioning slot 121, and the second boss 216 is clamped in the second positioning slot 122 to limit the movement of the conductive sheet 10 in the first direction and the second direction, wherein the first direction is parallel to the length direction of the conductive sheet 10, and the second direction is parallel to the width direction of the positioning slot.

[0088] Referring to Figure 12 As shown, the arrow direction X represents the first direction, and the arrow direction Y represents the second direction. When the conductive sheet 10 is mounted, the conductive sheet 10 can be mounted from the upper part of the support body 21 to the mounting position, when mounted, the first positioning slot 121 is aligned with the first boss 215, the second positioning slot 122 is aligned with the second boss 216, and then the conductive sheet 10 is moved towards the support body 21 until the second connecting plate 12 is located on the mounting position, at this time, since the first boss 215 and the first positioning slot 121 are matched with each other and the second boss 216 and the second positioning slot 122 are matched with each other, the position of the conductive sheet 10 is preliminarily fixed.

[0089] Referring to Figure 12 As shown, the first boss 215 is arranged on the side wall of the connecting part 22, and the second boss 216 is arranged on the side plate 214 of the bracket body, and the first boss 215 and the second boss 216 are oppositely arranged along the first direction.

[0090] In this embodiment, the arrangement of the first boss 215 and the second boss 216 not only can preliminarily fix the position of the conductive sheet 10, but also can position the laser welding position. Specifically, when welding the bus bar, the positions of the first boss 215 and the second boss 216 are easily recognized by the visual system of the laser welding equipment, so as to automatically recognize the welding position, realize the automation of the laser welding, and improve the welding efficiency and the yield.

[0091] In one embodiment, the number of the bus bar brackets 20 is multiple, and the multiple bus bar brackets 20 are arranged along the stacking direction of the single batteries 30, so that a part of the multiple bus bar brackets 20 and the second connecting plates 12 on the multiple bus bar brackets 20 jointly form a mounting area for mounting the bus bar.

[0092] Specifically, each single battery 30 is provided with one bus bar bracket 20, referring to Figures 6 to 9 As shown, according to the requirement, the form of the bus bar bracket 20 corresponding to each single battery can be one of the four forms (corresponding to the numbers A, B, C, and D), and the part of the bus bar bracket 20 includes the side wall of the connecting part 22 provided with the positioning protrusion, the side plate 214 of the bracket body 21, and the second surface of the second connecting plate 12 in the area enclosed by the part. The second surface of the second connecting plate 12 in the area enclosed by the part jointly form a mounting area for mounting the bus bar, and the mounting area below contains a certain number of single batteries 30. The bus bar connects the certain number of single batteries 30 together through the conductive sheet, so that the battery module in different series-parallel forms can be realized.

[0093] Referring to Figures 3 to 5 and Figure 15 As shown, the isolation plate 23 and the positioning protrusions arranged on the connecting part 22 and the side plate 214 jointly realize the mounting and positioning of the bus bar 40. In addition, the isolation plate 23 can also insulate and isolate the adjacent two bus bars to prevent the adjacent two bus bars from being in contact and short-circuiting.

[0094] In a fourth aspect, the embodiment provides a battery module. Referring to Figures 14 to 16As shown, the battery module includes the single battery 30, the busbar 40, and the busbar mounting structure provided by the embodiment, the positioning part cooperates with the positioning cooperating part, so that the conductive sheet is fixedly installed at the mounting position, and the plate surface of the first connecting plate can be parallel to the extension direction of the tab of the single battery. The tab of the single battery 30 is attached to and welded with the first connecting plate 11. The busbar is fixedly connected with the second connecting plate 12.

[0095] The battery module provided by the embodiment can attach and weld the tab with the plate surface of the first connecting plate 11 without bending the tab, avoid the flatness error generated in the tab bending process, thereby avoiding the problem that the tab is not tightly attached with the conductive sheet, improving the welding quality. At the same time, since the tab bending process is omitted, the production efficiency is improved. In use, the plate surface of the first connecting plate 11 is parallel to the extension direction of the tab of the single battery 30, the tab is attached to and welded with the plate surface of the first connecting plate 11, and then the busbar is fixedly connected with the second connecting plate 12, realizing the series and parallel connection of the single batteries 30 in the battery module.

[0096] In one embodiment, the number of single batteries 30 is multiple, and the number of busbar supports 20 is equal to the number of single batteries 30. That is, each single battery 30 is provided with a busbar support 20, and the forms of the busbar supports 20 on each single battery 30 can be the same or different.

[0097] In one embodiment, among the plurality of busbar supports 20, a part of the busbar supports 20 includes the support body 21 and the isolation plate 23, the isolation plate 23 cooperates with the support body 21 to form a plurality of mounting areas, and the busbar 40 is mounted in the mounting area to connect the plurality of single batteries 30 in series and in parallel.

[0098] Specifically, when the form of the busbar support 20 is A, C or D, the busbar support 20 includes the support body 21 and the isolation plate 23, and when the form of the busbar support 20 is B, the busbar support 20 does not include the isolation plate 23.

[0099] For example, referring to Figure 17 As shown, for the 1P16S battery module, the forms of the plurality of busbar supports 20 are A, C, D, C, D, C, D, C, D, C, D, C, D, C, D from left to right, and the busbar support 20 numbered E at the end.

[0100] In one embodiment, the battery module further comprises fasteners connected with the busbar supports 20 to fix the busbar supports 20 together. Exemplarily, the fasteners comprise long bolts and nuts, and the connecting portions 22 of the busbar supports 20 are provided with protrusions 221, the protrusions 221 of one of the two adjacent busbar supports 20 can be limited in the channel of the connecting portion 22 of the other busbar support 20. The long bolts are passed through the channels of the connecting portions 22 of the busbar supports 20 and cooperated with the nuts to fix all the busbar supports 20 together.

[0101] The battery module provided by the embodiment can be applied to various types of batteries installed in vehicles.

[0102] In the embodiment, the single battery 30 is a soft-pack lithium battery.

[0103] The single battery 30 comprises an electrode and an electrolyte, and the electrode is arranged in a battery shell. For the soft-pack lithium battery, the battery shell is an aluminum plastic film covering the outer surface of the electrode. Exemplarily, the electrode can be a laminated electrode, which comprises a first electrode plate, a second electrode plate and a diaphragm arranged between the first electrode plate and the second electrode plate, and the polarities of the first electrode plate and the second electrode plate are opposite. When the first electrode plate is a positive electrode plate, the second electrode plate is a negative electrode plate. The polarities of the first electrode plate and the second electrode plate can be exchanged.

[0104] In one embodiment, the battery module further comprises an end plate 50 for fixing the single batteries 30. The adjacent single batteries 30 can be provided with a buffer pad, and the end plate 50 and the single batteries 30 can be provided with a buffer pad.

[0105] In a fifth aspect, the embodiment provides a battery comprising the battery module provided by the embodiment.

[0106] The battery provided by the embodiment improves the quality and production efficiency of the battery due to the use of the battery module provided by the embodiment.

[0107] In one embodiment, the battery further comprises a box, and the battery module is arranged in the box. The battery module can be protected by arranging the battery module in the box. Before the battery module is placed in the box, a strapping structure can be used to provide a pre-tightening force to the battery module. After the battery module is installed in place and fixed to the bottom plate of the box, the strapping is cut off and removed.

[0108] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the concepts disclosed herein. It is intended that the disclosure be construed as including any paterns of this disclosure that can be presented during prosecution of the patent application. Specification and drawings are, therefore, to be regarded in an illustrative rather than a restrictive sense. The true scope and spirit of the disclosure are indicated by the appended claims.

[0109] It will be understood that the present disclosure is not limited to the precise structures hereinbefore described and illustrated in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A busbar support, characterized in that The bracket body is provided with a positioning portion and a mounting position for mounting the conductive sheet, the conductive sheet comprises a conductive sheet body, the conductive sheet body comprises a first connecting plate and a second connecting plate, an angle between the first connecting plate and the second connecting plate is greater than 0° and less than 180°, a plate surface of the first connecting plate is parallel to an extension direction of a tab of a single battery, so that the tab of the single battery can be attached to and welded with the plate surface of the first connecting plate, the second connecting plate is used for fixedly connecting with a busbar, and the second connecting plate is provided with a positioning matching portion for positioning the mounting position of the conductive sheet; the bracket body is provided with a positioning portion, the positioning portion is matched with the positioning matching portion, so that the conductive sheet is fixedly mounted on the mounting position, and the plate surface of the first connecting plate can be parallel to the extension direction of the tab of the single battery; The first connecting plate is located between the tab of the single battery and the bracket body; The positioning portion comprises a positioning boss, the positioning matching portion comprises a positioning groove, and the positioning boss is clamped in the positioning groove to limit movement of the conductive sheet in a first direction and a second direction, wherein the first direction is parallel to a length direction of the conductive sheet, and the second direction is parallel to a width direction of the positioning groove; The positioning portion further comprises a buckle, the buckle has a limiting protrusion, the limiting protrusion can abut against a surface of the second connecting plate away from the single battery to limit movement of the conductive sheet in a third direction, wherein the third direction is perpendicular to the first direction and the second direction.

2. The busbar support of claim 1, wherein A first surface of the first connecting plate is used for attaching and welding with the tab of the single battery, and a second surface of the second connecting plate is used for welding with the busbar, wherein the first surface and the second surface are smoothly connected.

3. The busbar support of claim 1, wherein The conductive sheet is in an L-shaped bent plate shape, and an angle between the plate surface of the first connecting plate and the plate surface of the second connecting plate is 90°.

4. The busbar support of claim 1, wherein The positioning boss comprises a first boss and a second boss, and the first boss and the second boss are oppositely arranged in the first direction.

5. The busbar support of claim 1, wherein The number of the mounting positions is two, and each mounting position corresponds to one conductive sheet, wherein one conductive sheet is used for connecting with a first tab of a single battery, and the other conductive sheet is used for connecting with a second tab of the single battery, wherein the first tab and the second tab have opposite polarities.

6. The busbar support of claim 5, wherein, Each mounting position is provided with a positioning boss and a buckle, and the buckle comprises an elastic buckle and a fixed buckle, and the elastic buckle and the fixed buckle are oppositely arranged in the first direction.

7. The busbar support of any one of claims 1 to 6, wherein, Further comprising an isolation plate, and the isolation plate is located on one side of the bracket body. The number of the mounting positions is two, and at least one mounting position is provided with the isolation plate.

8. The busbar support of any one of claims 1 to 6, wherein, The bracket body comprises a long strip-shaped plate body structure, and both ends of the long strip-shaped plate body structure are provided with connecting portions, the connecting portions are provided with passages for passing fasteners, so that a plurality of busbar brackets are fixedly connected together.

9. The busbar support of claim 8, wherein, The connecting part is provided with a protrusion on one side, and the protrusion of one of the two adjacent bus bar supports is limited in the channel of the connecting part of the other bus bar support.

10. A busbar mounting structure characterized by comprising: The bus bar support includes a conductive sheet and the bus bar support of any one of claims 1-9, the positioning part and the positioning matching part are matched to fix the conductive sheet to the mounting position and make the surface of the first connecting plate parallel to the extension direction of the tab of the single battery.

11. The busbar mounting structure according to claim 10, characterized by The positioning part includes a positioning boss, and the positioning boss includes a first boss and a second boss, and the first boss and the second boss are oppositely arranged along a first direction. The positioning matching part includes a positioning groove, and the positioning groove includes a first positioning groove and a second positioning groove, and the first positioning groove and the second positioning groove are oppositely arranged along the length direction of the second connecting plate. The first boss is clamped in the first positioning groove, and the second boss is clamped in the second positioning groove to limit the movement of the conductive sheet in the first direction and the second direction, wherein the first direction is parallel to the length direction of the conductive sheet, and the second direction is parallel to the width direction of the positioning groove.

12. The busbar mounting structure of claim 10, wherein The number of bus bar supports is multiple, and the multiple bus bar supports are arranged along the stacking direction of the single battery to form an installation area for installing the bus bar with part of the multiple bus bar supports and the second connecting plate on the multiple bus bar supports.

13. The busbar mounting structure of claim 10, wherein The material of the conductive sheet is metal, and the material of the bus bar support is plastic.

14. A battery module, characterized by The battery module includes a single battery, a bus bar, and the bus bar installation structure of any one of claims 10-13, the positioning part and the positioning matching part are matched to fix the conductive sheet to the mounting position and make the surface of the first connecting plate parallel to the extension direction of the tab of the single battery, the tab of the single battery is attached to and welded with the first connecting plate, and the bus bar is fixedly connected with the second connecting plate.

15. The battery module of claim 14, wherein, The first surface of the first connecting plate is attached to and welded with the tab of the single battery, and the second surface of the second connecting plate is welded with the bus bar, wherein the first surface and the second surface are smoothly transitioned.

16. The battery module of claim 14 or 15, wherein, The number of single batteries is multiple, and the number of bus bar supports is equal to the number of single batteries.

17. The battery module of claim 16, wherein, In the multiple bus bar supports, part of the bus bar supports include a support body and an isolation plate, and the isolation plate is matched with the support body to form multiple installation areas, and the bus bar is installed in the installation area to connect multiple single batteries in series and in parallel.

18. The battery module of claim 16, wherein, It also includes a fastener connected with the multiple bus bar supports to fixedly connect the multiple bus bar supports together.

19. A battery, characterized by The battery module includes any one of claims 14-18.

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