Integrated busbar and battery pack

Abstract

The utility model discloses an integrated busbar and a battery pack. The integrated busbar comprises an insulating fixed plate, an overcurrent piece, a signal acquisition assembly and an insulating sheet. A plurality of fixing grooves are formed in the insulating fixing plate at intervals in the first direction; the overflowing pieces are arranged at intervals in the first direction and embedded into the fixing grooves, each overflowing piece comprises a connecting part and an avoiding part, and the connecting parts are suitable for being connected with the single batteries; the avoiding part extends from the connecting part in the direction transverse to the first direction; the signal acquisition assembly is electrically connected with the over-current part and comprises an acquisition plate body; the insulating sheet is arranged between the avoiding part and the acquisition plate body; in the second direction, the height of the upper surface of the connecting part is different from the height of the upper surface of the avoiding part, so that the insulating fixing plate, the avoiding part of the overflowing part, the insulating sheet and the signal acquisition assembly which are overlapped with one another are flush with the surface of the connecting part of the overflowing part which is overlapped with one another. Therefore, the installation convenience of the integrated busbar can be improved, and the battery is ensured to have relatively high safety at the same time.

Description

Technical Field

[0001] The utility model relates to the field of secondary batteries, and in particular to an integrated busbar and a battery pack. Background Art

[0002] CCS (Cells Contact System, integrated busbar) is mainly composed of signal acquisition components (FPC, PCB, FFC, etc.), plastic structural parts, copper and aluminum busbars, etc., which are connected into a whole through hot pressing or riveting processes to achieve high-voltage series and parallel connection of battery cells, as well as battery temperature sampling and battery cell voltage sampling functions. It provides temperature and voltage to the BMS system through FPC / PCB and connector components and is part of the BMS system.

[0003] With the continuous development of battery technology, the fast charging performance of batteries has become an important indicator to measure battery performance. In order to ensure the safety of batteries during fast charging, a signal acquisition device is set to collect battery information. In order to increase the fast charging performance of batteries, the thickness of the aluminum bar is generally increased or the width of the aluminum bar is increased to make the aluminum bar have a larger cross-sectional area. However, the thicker aluminum bar thickness will cause welding difficulties, and the wider aluminum bar width will cause the aluminum bar to interfere with the signal acquisition device, resulting in the integrated busbar cannot be installed smoothly. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an integrated busbar, which can ensure that the battery has high safety while being able to be smoothly installed.

[0005] The utility model also aims to provide a battery pack, which has the above-mentioned integrated busbar.

[0006] According to the integrated busbar of the embodiment of the utility model, the integrated busbar includes: an insulating fixing plate, a current-passing member, a signal acquisition assembly and an insulating sheet. The insulating fixing plate is provided with a plurality of fixing grooves spaced apart in the first direction; the current-passing member is spaced apart along the first direction and embedded in the fixing grooves, the current-passing member includes a connecting portion and an avoiding portion, the connecting portion is suitable for connecting with a battery cell; wherein the avoiding portion extends from the connecting portion transversely to the first direction; the signal acquisition assembly is electrically connected to the current-passing member; the insulating sheet is provided between the avoiding portion and the signal acquisition assembly; in the second direction, the upper surface of the connecting portion and the upper surface of the avoiding portion are different in height, so that the insulating fixing plate, the avoiding portion of the current-passing member, the insulating sheet and the signal acquisition assembly after being stacked on each other are flush with the surface of the connecting portion of the current-passing member after being stacked on each other.

[0007] According to the integrated busbar of the embodiment of the utility model, the overcurrent parts are arranged at intervals in the first direction, and the overcurrent parts are embedded in the fixed grooves on the insulating fixed plate, and the fixed grooves can limit the overcurrent parts. The insulating sheet is arranged between the avoidance part and the collection plate body. When assembling the integrated busbar, the overcurrent parts can be placed in the fixed grooves on the insulating fixed plate respectively first, and the fixed grooves can limit the overcurrent parts to prevent the overcurrent parts from being displaced. Then, the insulating sheet and the collection plate body are arranged on the avoidance part in sequence, so that the insulating sheet and the avoidance part, and the collection plate body and the avoidance part are overlapped. The overcurrent parts can be connected to the battery cells through the connecting part to realize the charging and discharging of the battery cells. The signal acquisition component can transmit the electrical signal of the overcurrent parts to the collection plate body through the electrical connecting sheet to realize the collection of battery information. The avoidance part can make the overcurrent parts have a larger cross-sectional area, thereby increasing the overcurrent performance of the overcurrent parts. At the same time, the insulating sheet can separate the acquisition board from the current-passing component, which can provide installation space for the signal acquisition component while avoiding short circuits and signal interference. The insulating fixing plate, the avoidance portion of the current-passing component, the insulating sheet, and the signal acquisition component are flush with the surface of the connection portion of the current-passing component after being stacked on each other. This makes the installation of the integrated busbar more convenient. In this way, the convenience of installing the integrated busbar can be improved while ensuring the high safety of the battery.

[0008] In some embodiments, the avoidance portion of the flow-through member is provided with a limiting notch, and a dimension of the limiting notch in the first direction is smaller than 1 / 2 of a length dimension of the connecting portion in the first direction.

[0009] In some embodiments, the current-passing member is provided with a pressure groove extending transversely to the first direction between the connecting portion and / or the avoidance portion, the pressure groove protrudes from the lower surface of the current-passing member in the second direction, and the insulating fixing plate is provided with a groove extending along a third direction, and the groove is arranged corresponding to the pressure groove.

[0010] In some embodiments, a positioning protrusion is provided in the fixing groove, the flow-through member has a positioning hole, the positioning protrusion is arranged corresponding to the positioning hole, and the positioning protrusion is suitable for penetrating the positioning hole.

[0011] Further, the positioning protrusion includes a first positioning protrusion, the connecting portion is provided with a first positioning hole, the first positioning protrusion is arranged corresponding to the first positioning hole, and the first positioning protrusion is suitable for penetrating the first positioning hole; the positioning protrusion also includes a second positioning protrusion, the avoidance portion and the collection plate body are both provided with a second positioning hole, the second positioning protrusion is arranged corresponding to the second positioning hole, and the second positioning protrusion is suitable for penetrating the second positioning hole.

[0012] In some embodiments, the signal acquisition component includes an acquisition board and an electrical connection sheet, the acquisition board extends along a first direction, one end of the electrical connection sheet is electrically connected to the current passing member, and the other end of the electrical connection sheet is electrically connected to the acquisition board.

[0013] In some embodiments, the insulating sheet is disposed between the avoidance portion and the collecting plate, the projections of the collecting plate, the insulating sheet and the avoidance portion in the second direction overlap, and the first direction is perpendicular to the second direction.

[0014] In some embodiments, the fixing groove is further provided with a connecting hole, the connecting hole passes through the insulating fixing plate, and the connecting hole is arranged corresponding to the connecting portion.

[0015] In some embodiments, the insulating fixed plate also includes a plurality of explosion-proof valve holes, and the plurality of explosion-proof valve holes are arranged at intervals along the first direction. The fixing grooves are divided into two rows and arranged on both sides of the explosion-proof valve holes. The current-passing parts, the signal acquisition components and the insulating plate avoid the explosion-proof valve holes in the second direction.

[0016] According to the battery pack of the embodiment of the second aspect of the utility model, the battery pack includes: the integrated busbar according to any one of the above embodiments and a plurality of battery cells, and the poles of the plurality of battery cells are fixedly connected to the connecting portion.

[0017] According to the battery pack of the embodiment of the second aspect of the utility model, by providing the above-mentioned integrated busbar in the battery pack, the charging and discharging performance of the battery pack can be improved while ensuring safety.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is an exploded view of the integrated busbar of the embodiment of the utility model.

[0021] Figure 2 It is a top view of the integrated busbar of an embodiment of the utility model.

[0022] Figure 3 It is a schematic diagram of the assembly of the insulating fixing plate and the current passing parts of the integrated busbar in the embodiment of the utility model.

[0023] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle.

[0024] Figure 5 yes Figure 2 A partial enlarged view of point B in the middle.

[0025] Figure 6 yes Figure 3 A partial enlarged view of point C in the middle.

[0026] Figure 7 It is a three-dimensional schematic diagram of the flow-through parts of the integrated busbar according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] Integrated busbar 100,

[0029] Insulation fixing plate 10, fixing groove 11, limiting protrusion 111, connecting hole 112, positioning protrusion 12, first positioning protrusion 121, second positioning protrusion 122, third positioning protrusion 123, groove 13, explosion-proof valve hole 14,

[0030] The flow member 20, the connecting portion 21, the avoiding portion 22, the limiting notch 221, the positioning hole 23, the first positioning hole 231, the second positioning hole 232, the pressing groove 24,

[0031] Signal acquisition component 30, acquisition board 31, electrical connection sheet 32,

[0032] Insulating sheet 40 and third positioning hole 41 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference below Figure 1-Figure 7 An integrated busbar 100 and a battery pack according to an embodiment of the present invention are described.

[0037] like Figure 1-Figure 6 As shown, according to the integrated busbar 100 of the embodiment of the utility model, the integrated busbar 100 includes: an insulating fixing plate 10, a current-passing component (commonly used current-passing components can be copper bars, aluminum bars, etc., and the aluminum bar is taken as an example for explanation below), a signal acquisition component 30 and an insulating sheet 40.

[0038] The insulating fixing plate 10 is provided with a plurality of fixing grooves 11 at intervals in the first direction; the current passing members 20 are arranged at intervals along the first direction, and the plurality of current passing members 20 are arranged in one-to-one correspondence with the plurality of fixing grooves 11, and the fixing grooves 11 are suitable for limiting the position of the current passing members 20. Specifically, the plurality of current passing members 20 are arranged at intervals in the first direction, and the current passing members 20 can be at least partially embedded in the fixing grooves on the insulating fixing plate 10, so that the fixing grooves 11 can limit the position of the current passing members 20.

[0039] The current-passing member 20 includes a connection portion 21 and an avoidance portion 22, wherein the connection portion 21 has a larger length dimension in the first direction relative to the avoidance portion 22, so that the connection portion 21 is suitable for connecting with a battery cell; taking a battery pack of square battery cells as an example, the dimension of the connection portion 21 in the first direction can span the thickness of two battery cells, so as to be suitable for connecting different battery cells in series and / or in parallel, and in the transverse direction to the first direction, the width dimension of the current-passing member 20 is less than 1 / 2 of the length dimension of the square battery cell. The avoidance portion 22 extending from the connection portion 21 to the transverse direction to the first direction can make the current-passing member 20 have a larger cross-sectional area, thereby increasing the current-passing performance of the current-passing member 20; at the same time, the overall size of the current-passing member reserves the explosion-proof valve position of the square battery cell. Preferably, in the second direction, the upper surface of the connecting portion 21 and the upper surface of the avoiding portion 22 have different heights, so that a step portion can be formed between the connecting portion 21 and the avoiding portion 22, so that after being embedded in the fixing groove on the insulating fixing plate 10, the connecting portion 21 protrudes from the surface of the insulating fixing plate 10, and the avoiding portion 22 can be flush with the surface of the insulating fixing plate 10.

[0040] The signal acquisition assembly 30 includes an acquisition board 31 and an electrical connection sheet 32. The acquisition board 31 extends along a first direction. The electrical connection sheet 32 ​​is arranged one-to-one with the current-passing member 20. One end of the electrical connection sheet 32 ​​is electrically connected to the current-passing member 20, and the other end of the electrical connection sheet 32 ​​is electrically connected to the acquisition board 31. The insulating sheet 40 is arranged between the avoidance portion 22 and the acquisition board 31. In the second direction, the projections of the acquisition board 31, the insulating sheet 40 and the avoidance portion 22 on the insulating fixing plate 10 overlap, and the first direction is perpendicular to the second direction. Taking the battery pack of square battery cells as an example, the avoidance portion 22 and the connection portion 21 can be flush at one end in the first direction and flush at the other end. Figure 3 , Figure 6 As shown, in some embodiments, the avoidance portion 22 of the current-passing member 20 is provided with a limiting notch 221. The dimension of the limiting notch 221 in the first direction is less than 1 / 2 of the length dimension of the connecting portion 21 in the first direction, and is approximately equal to the thickness dimension of a square battery cell. This makes it easier for the electrical connection sheet 32 ​​to be connected to the current-passing member 20 here. It should be understood that the limiting protrusion 111 is suitable for cooperating with the limiting notch 221 of the fixing groove 11 to limit.

[0041] Since the avoidance portion 22 is flush with the surface of the insulating fixing plate 10, by setting the height of the upper surface of the connecting portion 21 in the second direction to be approximately equal to the height of the collecting plate body 31, the insulating sheet 40 and the avoidance portion 22 after being superimposed, the surface of the collecting plate body 31 can be flush with the surface of the connecting portion 21 after the integrated busbar 100 is assembled.

[0042] When assembling the integrated busbar 100, the multiple current-carrying parts 20 can be placed in the multiple fixing grooves 11 on the insulating fixing plate 10 respectively. The fixing grooves 11 can limit the current-carrying parts 20 to prevent the current-carrying parts 20 from being displaced. Then, the insulating sheet 40 and the collecting plate body 31 are sequentially arranged on the avoidance part 22, so that the projections of the insulating sheet 40 and the avoidance part 22 and the collecting plate body 31 and the avoidance part 22 in the second direction overlap. The current-carrying parts 20 can be connected to the battery cells through the connecting part 21 to realize the charging and discharging of the battery cells. The signal collecting assembly 30 can transmit the electrical signal of the current-carrying parts 20 to the collecting plate body 31 through the electrical connecting sheet 32 ​​to realize the collection of battery information. At the same time, the insulating sheet 40 can separate the collecting plate body 31 from the current-carrying parts 20, which can provide installation space for the signal collecting assembly 30 while avoiding short circuits and signal interference, making the installation of the integrated busbar 100 more convenient.

[0043] According to the integrated busbar 100 of the embodiment of the utility model, the convenience of installing the integrated busbar 100 can be improved while ensuring that the battery has high safety.

[0044] like Figure 1 , Figure 4 , Figure 7 As shown, in some embodiments, a positioning protrusion 12 is provided in the fixing groove 11 , the flow-through member 20 has a positioning hole 23 , the positioning protrusion 12 is provided corresponding to the positioning hole 23 , and the positioning protrusion 12 is suitable for penetrating the positioning hole 23 .

[0045] Specifically, when assembling the integrated busbar 100, the positioning protrusion 12 in the fixing groove 11 can be passed through the positioning hole 23 of the flow member 20, thereby fixing the flow member 20 on the insulating fixing plate 10. In this way, the assembly difficulty of the integrated busbar 100 can be reduced while the assembly efficiency can be increased.

[0046] It should be noted that there is no specific restriction on the number of positioning protrusions 12 in the fixing groove 11. For example, the positioning protrusions 12 in the fixing groove 11 can be one, two or more, and correspondingly, the positioning holes 23 on the flow-through member 20 can also be one, two or more. By providing multiple positioning protrusions 12 to cooperate with multiple positioning holes 23, the stability of the flow-through member 20 in the insulating fixing plate 10 can be improved, thereby increasing the assembly efficiency.

[0047] Optionally, the positioning protrusion 12 can be riveted with the positioning hole 23. When assembling the integrated busbar 100, after the positioning hole 23 of the current-passing member 20 is matched with the positioning protrusion 12, the positioning protrusion 12 can be riveted, so that the insulating fixing plate 10 and the current-passing member 20 are tightly connected, thereby improving the structural stability of the integrated busbar 100.

[0048] It is understandable that the riveting of the positioning protrusion 12 may include a variety of methods, such as providing rivets to achieve the riveting of the positioning protrusion 12 and the positioning hole 23; or the positioning protrusion 12 protruding from the positioning hole 23 may be melted by hot melting, and then the melted part is pressed downward, and after the positioning protrusion 12 is cooled and solidified, the positioning protrusion 12 and the positioning hole 23 can be tightly matched. The selection can be made according to actual needs.

[0049] Specifically, the fixing groove 11 is a groove body extending in the second direction of the insulating fixing plate 10. When the integrated busbar 100 is assembled, the current-passing member 20 can be placed in the fixing groove 11. By setting a limiting protrusion 111 in the fixing groove 11 and setting a limiting notch 221 in the avoidance portion 22 of the current-passing member 20, the position of the current-passing member 20 can be restricted when the current-passing member 20 is placed in the fixing groove 11 through the cooperation of the limiting protrusion 111 and the limiting notch 221, thereby preventing the current-passing member 20 from moving in the fixing groove 11, thereby facilitating subsequent assembly.

[0050] Therefore, by the cooperation and limitation between the limiting protrusion 111 and the limiting notch 221 , the stability of the flow-through member 20 in the fixing groove 11 can be increased, thereby improving the assembly efficiency of the integrated busbar 100 .

[0051] It should be noted that the specific shape of the limiting protrusion 111 is not specifically limited here. For example, the limiting protrusion 111 can be a polygon or a circle extending toward the side of the avoidance portion 22 of the flow member 20. Correspondingly, the limiting notch 221 forms an avoidance shape adapted to the limiting protrusion 111. It can be set according to actual needs and processing convenience.

[0052] like Figure 4 , Figure 7 As shown, further, the positioning protrusion 12 includes a first positioning protrusion 121, and the connecting portion 21 is provided with a first positioning hole 231. The first positioning protrusion 121 is arranged corresponding to the first positioning hole 231, and the first positioning protrusion 121 is suitable for penetrating the first positioning hole 231. After the flow-through member 20 is placed in the fixing groove 11, the first positioning hole 231 can be penetrated by the first positioning protrusion, so that the insulating fixing plate 10 is connected to the connecting portion 21 of the flow-through member 20, thereby realizing the mutual fixation between the flow-through member 20 and the insulating fixing plate 10, and improving the stability of the integrated busbar 100.

[0053] It should be noted that there is no specific limitation on the number of the first positioning protrusions 121 and the first positioning holes 231 , and they can be selected according to actual needs.

[0054] Further optionally, the positioning protrusion 12 also includes a second positioning protrusion 122, and the avoidance portion 22 and the acquisition plate body 31 are both provided with a second positioning hole 232, and the second positioning protrusion 122 is arranged corresponding to the second positioning hole 232, and the second positioning protrusion 122 is suitable for penetrating the second positioning hole 232. After the flow-through component 20 is placed in the fixing groove 11, the second positioning hole 232 is penetrated by the second positioning protrusion 122, so that the avoidance portion 22 and the acquisition plate body 31 can be fixed on the insulating fixing plate 10 at the same time, thereby realizing the connection between the insulating fixing plate 10, the flow-through component 20 and the signal acquisition component 30, and improving the stability of the integrated busbar 100.

[0055] like Figure 1 , Figure 5 As shown, in some embodiments, the insulating fixed plate 10 further includes a third positioning protrusion 123, the collection plate body 31 and the insulating sheet 40 are both provided with a third positioning hole 41, the third positioning protrusion 123 is arranged corresponding to the third positioning hole 41, and the third positioning protrusion 123 is suitable for penetrating the third positioning hole 41. When assembling the integrated busbar 100, the current-passing member 20 is first placed in the fixing groove 11 of the insulating fixed plate 10, and then the insulating sheet 40 and the collection plate body 31 of the signal collection assembly 30 are stacked on the avoidance portion 22. At this time, the third positioning protrusion 123 is used to penetrate the third positioning hole 41 on the collection plate body 31 and the insulating sheet 40, so that the collection plate body 31 and the insulating sheet 40 can be fixed on the insulating fixed plate 10 at the same time, thereby realizing the connection between the insulating fixed plate 10, the signal collection assembly 30 and the insulating sheet 40, and increasing the integration of the integrated busbar 100 while improving the stability of the integrated busbar 100.

[0056] In some embodiments, the height of the upper surface of the avoidance portion 22 in the second direction is lower than the upper surface of the connecting portion 21 , so that when the insulating sheet 40 and the signal acquisition component 30 are arranged on the avoidance portion 22 , the upper surface of the signal acquisition component 30 is flush with the upper surface of the connecting portion 21 .

[0057] Specifically, the height of the avoidance portion 22 of the current-passing member 20 in the second direction is made lower than the connecting portion 21, so that a step can be formed between the avoidance portion 22 of the current-passing member 20 and the connecting portion 21. After the integrated busbar 100 is assembled, the insulating sheet 40 and the signal acquisition component 30 located above the avoidance portion 22 can be flush with the connecting portion 21, so that the upper surface of the integrated busbar 100 is in a flat state, which is convenient for the subsequent installation of other components of the battery pack.

[0058] Thus, the integration level of the integrated busbar 100 can be improved and the space occupied can be reduced.

[0059] Optionally, the acquisition plate 31 may be disposed on the lower surface of the avoidance portion 22, the insulating sheet 40 may be disposed between the acquisition plate 31 and the avoidance portion 22, and the lower surface of the avoidance portion 22 may be higher in the second direction than the upper surface of the connection portion 21, so that when the insulating sheet 40 and the signal acquisition component 30 are disposed below the avoidance portion 22, the lower surface of the signal acquisition component 30 may be flush with the lower surface of the connection portion 21. Thus, the lower surface of the integrated busbar 100 may be in a flat state, which facilitates the subsequent installation of other components of the battery pack and reduces the space occupied by the integrated busbar 100.

[0060] like Figure 1 , Figure 4 , Figure 6 As shown, in some embodiments, the fixing groove 11 is further provided with a connecting hole 112 , the connecting hole 112 passes through the insulating fixing plate 10 , and the connecting hole 112 is provided corresponding to the connecting portion 21 .

[0061] Specifically, during the battery pack assembly process, the current-passing member 20 needs to be connected to the battery cell through the connecting portion 21. By providing a connecting hole 112 penetrating the insulating fixing plate 10 in the fixing groove 11, the connecting hole 112 can avoid the connecting portion 21 when the current-passing member 20 is placed in the fixing groove 11, which facilitates the connection between the current-passing member 20 and the battery cell.

[0062] like Figure 4 , Figure 7 As shown, in some embodiments, the current-passing member 20 is provided with a pressing groove 24 extending along the third direction between the connecting portion and / or the avoiding portion, and the pressing groove 24 protrudes from the lower surface of the current-passing member 20 in the second direction, and the insulating fixing plate 10 is provided with a groove 13 extending along the third direction, and the groove 13 is arranged corresponding to the pressing groove 24. The first direction, the second direction and the third direction are perpendicular to each other. When the integrated busbar 100 is assembled, the lower surface of the pressing groove 24 provided on the current-passing member 20 can correspond to the groove 13 on the insulating fixing plate 10, and the groove 13 can limit the pressing groove 24. In this way, the connection stability of the current-passing member 20 on the insulating fixing plate 10 can be further improved, thereby improving the reliability of the integrated busbar 100.

[0063] like Figure 4As shown, in some embodiments, the insulating fixed plate 10 also includes a plurality of explosion-proof valve holes 14, and the plurality of explosion-proof valve holes 14 are arranged at intervals along the first direction. The fixed grooves 11 are arranged in two rows on both sides of the explosion-proof valve holes 14, and the flow-through parts 20, the signal acquisition components 30 and the insulating plate avoid the explosion-proof valve holes 14 in the second direction. Each explosion-proof valve hole 14 corresponds to the position of the explosion-proof valve of the battery cell. When the battery cell has a thermal runaway, the pressure can be released through the explosion-proof valve. The fixed grooves 11 are arranged in two rows on both sides of the explosion-proof valve hole 14, and the flow-through parts 20, the signal acquisition components 30 and the insulating plate avoid the explosion-proof valve holes 14 in the second direction, which can avoid the blockage of the explosion-proof valve holes 14, ensure that the gas can be discharged normally in the case of thermal runaway of the battery cell, and improve safety.

[0064] According to the battery pack of the embodiment of the second aspect of the utility model, the battery pack includes: the integrated busbar 100 of any one of the above embodiments and a plurality of battery cells, and the poles of the plurality of battery cells are fixedly connected to the connecting portion 21 .

[0065] According to the battery pack of the embodiment of the second aspect of the utility model, by providing the above-mentioned integrated busbar 100 in the battery pack, the charging and discharging performance of the battery pack can be improved while ensuring safety.

[0066] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An integrated busbar, characterized in that: include: An insulating fixing plate (10), wherein the insulating fixing plate (10) is provided with a plurality of fixing grooves (11) at intervals in a first direction; A current-passing member (20), the current-passing members (20) being arranged at intervals along a first direction and embedded in the fixing groove (11), the current-passing member (20) comprising a connecting portion (21) and an avoiding portion (22), the connecting portion (21) being suitable for connecting to a battery cell; wherein the avoiding portion (22) is arranged to extend from the connecting portion (21) transversely to the first direction; A signal collection component (30) electrically connected to the current-passing component (20); An insulating sheet (40) is provided between the avoidance portion (22) and the signal collection component (30); In the second direction, the upper surface of the connecting portion (21) and the upper surface of the avoiding portion (22) are at different heights, so that the insulating fixing plate (10), the avoiding portion (22) of the current-passing member (20), the insulating sheet (40) and the signal acquisition component (30) are flush with the surface of the connecting portion (21) of the current-passing member (20) after being stacked on each other.

2. The integrated busbar according to claim 1, characterized in that: The avoidance portion (22) of the flow-through member (20) is provided with a limiting notch (221), and the dimension of the limiting notch (221) in the first direction is smaller than 1 / 2 of the length dimension of the connecting portion (21) in the first direction.

3. The integrated busbar according to claim 1, characterized in that: The current-passing member (20) is provided with a pressing groove (24) extending transversely to the first direction between the connecting portion (21) and / or the avoiding portion (22), and the pressing groove (24) protrudes from the lower surface of the current-passing member (20) in the second direction. The insulating fixing plate (10) is provided with a groove (13) extending in a third direction, and the groove (13) is arranged corresponding to the pressing groove (24).

4. The integrated busbar according to claim 1, characterized in that: A positioning protrusion (12) is provided in the fixing groove (11), the flow-through member (20) has a positioning hole (23), the positioning protrusion (12) and the positioning hole (23) are arranged correspondingly, and the positioning protrusion (12) is suitable for penetrating the positioning hole (23).

5. The integrated busbar according to claim 4, characterized in that: The positioning protrusion (12) comprises a first positioning protrusion (121), the connecting portion (21) is provided with a first positioning hole (231), the first positioning protrusion (121) and the first positioning hole (231) are arranged correspondingly, and the first positioning protrusion (121) is suitable for penetrating the first positioning hole (231); The positioning protrusion (12) further comprises a second positioning protrusion (122), the avoidance portion (22) and the collection plate body (31) are both provided with a second positioning hole (232), the second positioning protrusion (122) is arranged correspondingly to the second positioning hole (232), and the second positioning protrusion (122) is suitable for penetrating the second positioning hole (232); the insulating fixing plate (10) further comprises a third positioning protrusion (123), the collection plate body (31) and the insulating sheet (40) are both provided with a third positioning hole (41), the third positioning protrusion (123) is arranged correspondingly to the third positioning hole (41), and the third positioning protrusion (123) is suitable for penetrating the third positioning hole (41).

6. The integrated busbar according to claim 1, characterized in that: The signal acquisition component (30) comprises a collection board (31) and an electrical connection sheet (32); the collection board (31) extends along a first direction; one end of the electrical connection sheet (32) is electrically connected to the current-passing member (20); and the other end of the electrical connection sheet (32) is electrically connected to the collection board (31).

7. The integrated busbar according to claim 6, characterized in that: The insulating sheet (40) is arranged between the avoidance portion (22) and the collection plate (31); the projections of the collection plate (31), the insulating sheet (40) and the avoidance portion (22) in a second direction overlap; and the first direction is perpendicular to the second direction.

8. The integrated busbar according to claim 1, characterized in that: The fixing groove (11) is further provided with a connection hole (112), the connection hole (112) passes through the insulating fixing plate (10), and the connection hole (112) is arranged corresponding to the connection portion (21).

9. The integrated busbar according to any one of claims 1 to 8, characterized in that: The insulating fixing plate (10) further comprises a plurality of explosion-proof valve holes (14), the plurality of explosion-proof valve holes (14) being arranged at intervals along the first direction, the fixing grooves (11) being divided into two rows and arranged on both sides of the explosion-proof valve holes (14), and the flow-through component (20), the signal acquisition component (30) and the insulating fixing plate (10) avoiding the explosion-proof valve holes (14) in the second direction.

10. A battery pack, characterized in that: include: The integrated busbar (100) according to any one of claims 1 to 9; A plurality of battery cells, wherein the poles of the plurality of battery cells are fixedly connected to the connecting portion (21).

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