Busbar assembly and battery module

Abstract

The utility model discloses a busbar assembly and a battery module, the busbar assembly comprises: an FPC board, the FPC board comprises a first board and a second board which are connected with each other, the first board is a straight board, the second board is arranged between two ends of the first board in the length direction, is arranged on one side of the first board in the width direction, and extends in the width direction of the first board; the inter-cell bus bar is arranged on one side of the first plate in the thickness direction and is connected with the first plate; the busbar bracket is arranged on one side, deviating from the first plate, of the inter-cell busbar and is connected with the first plate and the inter-cell busbar; and the low-voltage connector is arranged on the second plate and is connected with the second plate. According to the busbar assembly provided by the utility model, the first plate does not need to be bent, so that the length of the first plate is reduced, the length of the FPC board is reduced, and the cost is reduced. Meanwhile, the FPC board can be prevented from being torn.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a bus bar assembly and a battery module. Background Art

[0002] At present, the structure of the module sampling assembly (FPC) is L-shaped. One end of the FPC (for example, the first end) needs to be bent 180 degrees along the thickness direction of the FPC to form a connecting plate, and the low-voltage connector is arranged on one side of the width direction of the connecting plate and extends. However, this assembly method will increase the length of the FPC, increase the cost, and at the same time, when the low-voltage connector is assembled and positioned facing away from the first end, if the deviation from the first end is too large, that is, when the connecting plate is pulled to displace too much away from the first end, the nickel sheet at the first end will be bent, resulting in the tearing of the FPC. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a bus bar assembly, which reduces the length of the FPC board, reduces the cost, and can avoid the tearing of the FPC board.

[0004] The utility model also provides a battery module, including the above-mentioned bus bar assembly.

[0005] The bus bar assembly according to the embodiment of the utility model includes: an FPC board, which includes a first board and a second board connected to each other. The first board is a straight board, and the second board is arranged between the two ends of the first board in the length direction, and is arranged on one side of the first board in the width direction and extends along the width direction of the first board; an inter-cell bus bar, which is arranged on one side of the first board in the thickness direction and is connected to the first board; a bus bar bracket, which is arranged on the side of the inter-cell bus bar away from the first board and is connected to both the first board and the inter-cell bus bar; a low-voltage connector, which is arranged on the second board and is connected to the second board.

[0006] According to the bus bar assembly of the embodiment of the utility model, the FPC board includes a first board and a second board connected to each other. The second board is arranged between the two ends of the first board in the length direction, and is arranged on one side of the first board in the width direction and extends along the width direction of the first board. The low-voltage connector is arranged on the second board and is connected to the second board. The first board is a straight board, so that the first board does not need to be bent, thereby reducing the length of the first board, reducing the length of the FPC board, and reducing the cost. At the same time, since the first board is a straight board, it can be avoided that when the first connecting pieces at both ends of the first board in the length direction are displaced in the length direction of the first board, the first connecting pieces at both ends of the first board in the length direction are bent, thereby avoiding the tearing of the FPC board.

[0007] In some embodiments of the present utility model, the busbar assembly further includes: a connector bracket, which is disposed on a side of the busbar bracket away from the inter-cell busbar, and is connected to the inter-cell busbar, the busbar bracket, and the low-voltage connector.

[0008] In some embodiments of the present utility model, the busbar bracket has a first avoidance hole, and the connector bracket has a second avoidance hole, and the first avoidance hole and the second avoidance hole are oppositely arranged in the thickness direction of the first plate.

[0009] In some embodiments of the present utility model, the low-voltage connector includes a reinforcing plate and a connector body. The connector body is disposed on a side of the second plate away from the inter-cell busbar, and the reinforcing plate is disposed on a side of the second plate facing the inter-cell busbar, and the reinforcing plate is connected to the connector bracket.

[0010] In some embodiments of the present utility model, the inter-cell busbar, the busbar bracket, and the connector bracket are riveted; and / or, the busbar bracket, the connector bracket, and the low-voltage connector are snap-connected; and / or, the busbar bracket and the connector bracket are connected by a positioning pin; and / or, the busbar bracket and the first plate are riveted.

[0011] In some embodiments of the present utility model, the busbar assembly further includes: a temperature sensor bracket, which is disposed on a side of the busbar bracket away from the inter-cell busbar and is connected to both the busbar bracket and the inter-cell busbar. An installation groove is provided on a side of the temperature sensor bracket away from the inter-cell busbar; a temperature sensor body, which is adapted to be disposed in the installation groove, and the temperature sensor body is connected to the first plate.

[0012] In some embodiments of the present utility model, the temperature sensor bracket includes: a connecting portion and an installation portion. The connecting portion extends along the length direction of the first plate and is connected to the busbar bracket and the inter-cell busbar. The installation portion extends along the width direction of the first plate. The installation groove is located at one end in the length direction of the installation portion, and one end of the installation portion away from the installation groove is connected to the connecting portion.

[0013] In some embodiments of the present utility model, the connecting portion is riveted and connected to the inter-cell busbar and the busbar bracket; and / or, the busbar bracket has a third avoidance hole, and the third avoidance hole and the installation groove are oppositely arranged in the thickness direction of the first plate; and / or, the first plate has a fourth avoidance hole, and the fourth avoidance hole and the installation groove are oppositely arranged in the thickness direction of the first plate.

[0014] In some embodiments of the present utility model, the busbar between the first plate and the battery cell is connected by a first connecting piece, the first plate and the temperature sensing body are connected by a second connecting piece, and the first connecting piece and the second connecting piece are spaced apart.

[0015] The battery module according to the embodiment of the present utility model includes the above-mentioned busbar assembly.

[0016] In the battery module according to the embodiment of the present utility model, by providing the above-mentioned busbar assembly, the FPC board includes a first plate and a second plate connected to each other. The second plate is disposed between the two ends in the length direction of the first plate, and is disposed on one side in the width direction of the first plate and extends along the width direction of the first plate. The low-voltage connector is disposed on the second plate and connected to the second plate. The first plate is a straight plate, so that the first plate does not need to be bent, thereby reducing the length of the first plate, and thus reducing the length of the FPC board and reducing the cost. At the same time, since the first plate is a straight plate, it can be avoided that when the first connecting pieces at both ends in the length direction of the first plate are offset in the length direction of the first plate, the first connecting pieces at both ends in the length direction of the first plate are bent, thereby avoiding tearing of the FPC board.

[0017] Some of the additional aspects and advantages of the present utility model will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a perspective view of the busbar assembly according to the embodiment of the present utility model;

[0020] Figure 2 is Figure 1 an enlarged view of part A in

[0021] Figure 3 is Figure 1 an enlarged view of part B in

[0022] Figure 4 is a perspective view of the busbar assembly according to the embodiment of the present utility model from another perspective;

[0023] Figure 5 is Figure 4 an enlarged view of part C in

[0024] Figure 6 is Figure 4 an enlarged view of part D in

[0025] Figure 7 is an exploded view of the busbar assembly according to the embodiment of the present utility model;

[0026] Figure 8 is Figure 7 An enlarged view of the E position in

[0027] Figure 9 is Figure 7 An enlarged view of the F position in

[0028] Figure 10 A perspective view of the connector bracket of the bus bar assembly according to an embodiment of the present utility model;

[0029] Figure 11 An assembled perspective view of the inter-cell bus bar and the temperature sensor bracket of the bus bar assembly according to an embodiment of the present utility model.

[0030] Reference numerals:

[0031] 10. Bus bar assembly;

[0032] 1. FPC board; 11. First board; 12. Second board; 13. First connecting piece; 14. Second connecting piece; 15. Riveting hole; 16. Fourth avoidance hole;

[0033] 2. Inter-cell bus bar; 21. Conductive member; 22. Fifth avoidance hole;

[0034] 3. Bus bar bracket; 31. First avoidance hole; 32. Riveting post; 33. Positioning hole; 34. First clamping hole; 35. Third avoidance hole;

[0035] 4. Low-voltage connector; 41. Reinforcing plate; 42. Connector body; 43. Second clamping hole;

[0036] 5. Connector bracket; 51. Buckle; 52. Positioning pin; 53. Second avoidance hole;

[0037] 6. Temperature sensor bracket; 61. Installation part; 611. Installation groove; 62. Connection part;

[0038] 7. Temperature sensor body;

[0039] 8. Jumper bus bar;

[0040] 9. Output pole bus bar. Detailed implementation manners

[0041] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is 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. Therefore, it should not be construed as a limitation to 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, the meaning of "a plurality" is two or more.

[0043] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] Next, reference is made to Figures 1 - 11 Describe the bus bar assembly 10 according to an embodiment of the present utility model.

[0045] As Figures 1 - 11 shown, the bus bar assembly 10 according to an embodiment of the present utility model includes: an FPC board 1, an inter-cell bus bar 2, a bus bar bracket 3, and a low-voltage connector 4.

[0046] Specifically, referring to Figures 1 - 9 , the FPC (Flexible Printed Circuit) board 1 includes a first board 11 and a second board 12 connected to each other. The first board 11 is a straight board. The second board 12 is disposed between two ends in the length direction of the first board 11, and is disposed on one side in the width direction of the first board 11 and extends along the width direction of the first board 11; the inter-cell bus bar 2 is disposed on one side in the thickness direction of the first board 11 and is connected to the first board 11; the bus bar bracket 3 is disposed on the side of the inter-cell bus bar 2 facing away from the first board 11 and is connected to both the first board 11 and the inter-cell bus bar 2; the low-voltage connector 4 is disposed on the second board 12 and is connected to the second board 12.

[0047] Among them, it should be noted that the battery cells of the battery module are arranged on the side of the busbar support 3 facing away from the FPC board 1 and are connected to the inter-cell busbar 2, so as to realize the output of current. The inter-cell busbar 2 includes a plurality of conductive members 21 arranged along the length direction of the first plate 11. The plurality of conductive members 21 are divided into multiple groups of conductive members 21. The multiple groups of conductive members 21 are spaced apart along the length direction of the first plate 11. Each group of conductive members 21 includes a plurality of conductive members 21 arranged and connected along the length direction of the first plate 11. The busbar support 3 can fixedly support the FPC board 1 and the inter-cell busbar 2, so as to ensure the installation stability and structural strength of the busbar assembly 10.

[0048] The inter-cell busbar 2 is arranged on the side of the first plate 11 in the width direction facing the second plate 12. On the side of the first plate 11 in the width direction facing the inter-cell busbar 2, there are first connecting pieces 13. The first plate 11 and the inter-cell busbar 2 are connected through the first connecting pieces 13 such as nickel sheets. The first connecting pieces 13 are multiple and spaced apart along the length direction of the first plate 11.

[0049] It can be understood that since the first plate 11 is a straight plate and does not need to be bent, the length of the first plate 11 is reduced, thereby reducing the length of the FPC board 1 and reducing the cost. At the same time, when installing the low-voltage connector 4, through the fine adjustment of the first plate 11 in the length direction of the first plate 11, the second plate 12 is slightly offset in the length direction of the first plate 11, so as to adjust the position of the low-voltage connector 4 to make the low-voltage connector 4 installed in place. At this time, the first connecting pieces 13 will also be slightly offset in the length direction of the first plate 11. Since the first plate 11 is a straight plate, it can be avoided that when the first connecting pieces 13 at both ends of the first plate 11 in the length direction are offset in the length direction of the first plate 11, the first connecting pieces 13 at both ends of the first plate 11 in the length direction are bent, thereby avoiding the tearing of the FPC board 1.

[0050] Furthermore, as Figure 1 、 Figure 2 、 Figure 7 and Figure 8 shown, the busbar assembly 10 further includes: a jumper busbar 8 and an output pole busbar 9. The jumper busbar 8 and the output pole busbar 9 are respectively arranged at both ends of the inter-cell busbar 2 along the length direction of the first plate 11 and are connected to the inter-cell busbar 2. The jumper busbar 8 and the output pole busbar 9 are both connected to the busbar support 3, so that the jumper busbar 8 and the output pole busbar 9 can be installed and fixed.

[0051] The jumper bus 8 connects multiple battery cells or battery modules in the battery module to ensure that the current flows smoothly between the various battery cells. The output bus 9 is a component that connects the battery module with an external load or power source. The output bus 9 can collect the outputs of all battery cells in the module to form one or more larger current output points to meet the needs of external devices or systems.

[0052] According to the busbar assembly 10 of the embodiment of the utility model, the FPC board 1 includes a first board 11 and a second board 12 connected to each other, the second board 12 is arranged between the two ends of the first board 11 in the length direction, and is arranged on one side of the first board 11 in the width direction, and extends along the width direction of the first board 11, the low-voltage connector 4 is arranged on the second board 12, and is connected to the second board 12, the first board 11 is a straight board, so that the first board 11 does not need to be bent, thereby reducing the length of the first board 11, thereby reducing the length of the FPC board 1 and reducing the cost. At the same time, the first board 11 is a straight board, which can avoid the first connecting pieces 13 at both ends of the length direction of the first board 11 from being bent when the first connecting pieces 13 at both ends of the length direction of the first board 11 are offset in the length direction of the first board 11, thereby avoiding the tearing of the FPC board 1.

[0053] In some embodiments of the present invention, Figures 1 - 9 As shown, the busbar assembly 10 further includes: a connector bracket 5, which is arranged on a side of the busbar bracket 3 away from the inter-cell busbar 2, and the connector bracket 5 is connected to the inter-cell busbar 2, the busbar bracket 3 and the low-voltage connector 4. Thus, the installation stability of the low-voltage connector 4 is improved by connecting the connector bracket 5 to the inter-cell busbar 2, the busbar bracket 3 and the low-voltage connector 4.

[0054] In some embodiments of the present invention, Figure 5 , Figure 9 and Figure 10 As shown, the busbar bracket 3 has a first avoidance hole 31, and the connector bracket 5 has a second avoidance hole 53, and the first avoidance hole 31 and the second avoidance hole 53 are arranged opposite to each other in the thickness direction of the first plate 11. It can be understood that the arrangement of the first avoidance hole 31 and the second avoidance hole 53 can avoid the connection interference between the battery cell and the inter-cell busbar 2, so that the battery cell and the inter-cell busbar 2 can be smoothly connected to achieve the output of current.

[0055] In some embodiments of the present invention, Figure 2 and Figures 7 - 9 As shown, the low-voltage connector 4 includes a reinforcement plate 41 and a connector body 42. The connector body 42 is arranged on the side of the second plate 12 away from the inter-cell bus 2, and the reinforcement plate 41 is arranged on the side of the second plate 12 facing the inter-cell bus 2. The reinforcement plate 41 is connected to the connector bracket 5.

[0056] It can be understood that the connector body 42 is arranged on the side of the second board 12 away from the inter-cell bus 2, so as to facilitate the connection of the connector body 42 with the electrical equipment, and the connector body 42 is connected to the second board 12, so as to achieve electrical conduction between the connector body 42 and the second board 12. The reinforcement plate 41 can improve the structural strength of the low-voltage connector 4. The reinforcement plate 41 is arranged on the side of the second board 12 facing the inter-cell bus 2, so as to facilitate the installation of the reinforcement plate 41 and the connector bracket 5. The reinforcement plate 41 interacts with the connector bracket 5 to improve the overall structural strength and installation stability of the low-voltage connector 4.

[0057] In some embodiments of the present invention, Figures 1 - 10 As shown, the inter-cell busbar 2, the busbar bracket 3 and the connector bracket 5 are riveted, thereby improving the connection reliability between the inter-cell busbar 2, the busbar bracket 3 and the connector bracket 5. The connector bracket 5 has a riveting column 32, and the inter-cell busbar 2 and the busbar bracket 3 have corresponding riveting holes 15, and the riveting column 32 is penetrated in the riveting hole 15, so as to realize the riveting between the inter-cell busbar 2, the busbar bracket 3 and the connector bracket 5.

[0058] Furthermore, if Figures 1 - 10 As shown, the inter-cell bus 2 and the bus support 3 are riveted to each other, which further improves the connection reliability between the inter-cell bus 2 and the bus support 3. The bus support 3 has a riveting column 32, and the inter-cell bus 2 has a riveting hole 15, and the riveting column 32 is penetrated in the riveting hole 15, so as to realize the riveting connection between the inter-cell bus 2 and the bus support 3.

[0059] Among them, the riveting holes 15 on the inter-cell bus 2 can be matched with the riveting columns 32 on the connector bracket 5, and can also be matched with the riveting columns 32 on the bus bracket 3, thereby reducing the form of the openings of the inter-cell bus 2, thereby reducing the types of inter-cell bus 2, that is, the same inter-cell bus 2 can be connected and fixed to the connector bracket 5, and can also be connected and fixed to the bus bracket 3, thereby reducing costs.

[0060] In some embodiments of the present invention, Figure 1 , Figure 2 and Figures 7 - 10As shown, the busbar bracket 3, the connector bracket 5 and the low-voltage connector 4 are snap-connected; thereby, the connection reliability between the busbar bracket 3, the connector bracket 5 and the low-voltage connector 4 is improved. Among them, one side of the connector bracket 5 facing the low-voltage connector 4 has a buckle 51, the busbar bracket 3 has a first card hole 34 for the buckle 51 to pass through, and the low-voltage connector 4 has a second card hole 43 that cooperates with the buckle 51. The setting of the first card hole 34 can avoid the interference of the cooperation between the buckle 51 and the second card hole 43, and at the same time, it can improve the connection reliability between the busbar bracket 3 and the connector.

[0061] In addition, as Figures 7 - 10 shown, in a group of conductive parts 21, there is a fifth avoidance hole 22 between two adjacent conductive parts 21. Both sides of the inter-cell busbar 2 along the width direction of the first plate 11 have fifth avoidance holes 22. At least part of the fifth avoidance holes 22 are arranged opposite to the buckle 51 in the thickness direction of the second plate 12, so as to avoid the cooperation between the buckle 51 and the second card hole 43.

[0062] Furthermore, as Figures 7 - 10 shown, there are multiple buckles 51, and the first card holes 34 and the second card holes 43 are multiple and in one-to-one correspondence. Thus, the connection reliability between the busbar bracket 3, the connector bracket 5 and the low-voltage connector 4 is further improved. For example, in the example shown in Figures 7 - 10 there are 4 buckles 51, and both the first card holes 34 and the second card holes 43 are 4. However, the present invention is not limited to this. The buckle 51 can be other numbers, and the first card holes 34 and the second card holes 43 can also be other numbers, such as 2, 3, 5 or 6, etc.

[0063] In some embodiments of the present invention, as Figure 1 , Figure 2 and Figures 7 - 10 shown, the busbar bracket 3 and the connector bracket 5 are connected by a positioning pin 52. It can be understood that the busbar bracket 3 has a positioning hole 33, and one side of the connector bracket 5 facing the busbar bracket 3 has a positioning pin 52. Through the mutual cooperation of the positioning pin 52 and the positioning hole 33, the connection reliability between the busbar bracket 3 and the connector bracket 5 is further improved.

[0064] Furthermore, as Figures 7 - 10 shown, in a group of conductive parts 21, there is a fifth avoidance hole 22 between two adjacent conductive parts 21. Both sides of the inter-cell busbar 2 along the width direction of the first plate 11 have fifth avoidance holes 22. At least part of the fifth avoidance holes 22 are arranged opposite to the positioning pin 52 in the thickness direction of the second plate 12, so as to avoid the cooperation between the positioning pin 52 and the positioning hole 33.

[0065] Furthermore, as Figures 7 - 10As shown, there are multiple positioning pins 52 and multiple positioning holes 33 corresponding to each other, thereby further improving the connection reliability between the busbar bracket 3 and the connector bracket 5. Figures 7 - 10 In the example shown, there are two positioning pins 52 and two positioning holes 33, but the present invention is not limited thereto. The number of positioning pins 52 and the number of positioning holes 33 may be other numbers, such as 4, 3, 5 or 6.

[0066] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the busbar support 3 and the first plate 11 are riveted. The busbar support 3 is provided with a riveting column 32, and the first plate 11 is provided with a riveting hole 15 that matches the riveting column 32, so that the busbar support 3 and the first plate 11 are riveted, thereby improving the connection reliability between the busbar support 3 and the FPC board 1

[0067] In some embodiments of the present invention, Figure 1 , Figure 3 , Figure 6 and Figure 11 As shown, the busbar assembly 10 further includes: a temperature sensing bracket 6 and a temperature sensing body 7. The temperature sensing bracket 6 is arranged on the side of the busbar bracket 3 away from the inter-cell busbar 2, and is connected to both the busbar bracket 3 and the inter-cell busbar 2. The side of the temperature sensing bracket 6 away from the inter-cell busbar 2 has a mounting groove 611; the temperature sensing body 7 is suitable for being arranged in the mounting groove 611, and the temperature sensing body 7 is connected to the first plate 11.

[0068] It can be understood that the temperature sensing body 7 is connected to the first board 11, and the temperature of the battery cell is detected by the temperature sensing body 7, and the signal is transmitted to the first board 11, so that the FPC board 1 can collect the temperature of the battery cell, thereby facilitating early intervention and early warning of thermal runaway of the battery cell and improving safety.

[0069] The temperature sensing bracket 6 has an installation groove 611 on the side facing away from the inter-cell bus 2, so that the notch of the installation groove 611 faces the battery cell. When the temperature sensing body 7 is arranged in the installation groove 611, it is convenient for the temperature sensing body 7 to directly detect the temperature inside the battery cell, thereby making the detected temperature more accurate, which is conducive to early detection and treatment of potential thermal runaway risks.

[0070] In some embodiments of the present invention, Figure 1 , Figure 3 , Figure 6 and Figure 11As shown in the figure, the temperature-sensitive bracket 6 includes a connecting portion 62 and a mounting portion 61. The connecting portion 62 extends along the length direction of the first plate 11 and is connected to the busbar bracket 3 and the inter-cell busbar 2. The mounting portion 61 extends along the width direction of the first plate 11. The mounting groove 611 is located at one end of the mounting portion 61 in the length direction. One end of the mounting portion 61 facing away from the mounting groove 611 is connected to the connecting portion 62.

[0071] It can be understood that since the inter-cell busbar 2 extends along the length direction of the first plate 11 and the connecting portion 62 extends along the length direction of the first plate 11, it is convenient for the connection between the connecting portion 62 and the inter-cell busbar 2. At the same time, the contact area between the temperature-sensitive bracket 6 and the inter-cell busbar 2 is increased, and the situation of force deformation between the temperature-sensitive bracket 6 and the inter-cell busbar 2 is reduced. The mounting groove 611 is provided at one end of the mounting portion 61 facing away from the connecting portion 62, thus avoiding the installation interference between the connecting portion 62 and the temperature-sensitive body 7.

[0072] In some embodiments of the present invention, as Figure 1 , Figure 3 , Figure 6 and Figure 11 shown, the connecting portion 62 is riveted to the inter-cell busbar 2 and the busbar bracket 3. Among them, there are multiple riveting holes 15 on the busbar bracket 3, and riveting posts 32 are provided on the connecting portion 62. At least part of the riveting holes 15 cooperate with the riveting posts 32 on the connecting portion 62. Thus, the riveting connection between the connecting portion 62 and the inter-cell busbar 2 and the busbar bracket 3 is realized, and the connection reliability between the connecting portion 62 and the inter-cell busbar 2 and the busbar bracket 3 is improved.

[0073] Furthermore, multiple riveting posts 32 are provided on the connecting portion 62. Thus, the riveting connection between the connecting portion 62 and the inter-cell busbar 2 and the busbar bracket 3 is further improved.

[0074] Furthermore, as Figures 1 - 10 shown, the inter-cell busbar 2, the busbar bracket 3 and the connector bracket 5 are riveted; thus, the connection reliability between the inter-cell busbar 2, the busbar bracket 3 and the connector bracket 5 is improved. Among them, there are riveting posts 32 on the connector bracket 5. At least part of the riveting holes 15 on the inter-cell busbar 2 cooperate with the riveting posts 32 on the connector bracket 5. There are riveting holes 15 on the busbar bracket 3 that cooperate with the riveting posts 32 on the connector bracket 5. The riveting posts 32 pass through the riveting holes 15, thereby realizing the riveting between the inter-cell busbar 2, the busbar bracket 3 and the connector bracket 5.

[0075] Furthermore, as Figures 1 - 10As shown, the busbar 2 between the battery cells and the busbar support 3 are riveted together, further improving the connection reliability between the busbar 2 between the battery cells and the busbar support 3. Among them, the busbar support 3 is provided with riveting posts 32, and at least some of the riveting holes 15 on the busbar 2 between the battery cells cooperate with the riveting posts 32 on the busbar support 3. The riveting posts 32 pass through the riveting holes 15, thereby realizing the riveting connection between the busbar 2 between the battery cells and the busbar support 3.

[0076] Among them, the riveting holes 15 on the busbar 2 between the battery cells can cooperate with the riveting posts 32 on the connector support 5, and can also cooperate with the riveting posts 32 on the busbar support 3, and can also cooperate with the riveting posts 32 on the connecting part 62, thereby reducing the form of the openings on the busbar 2 between the battery cells, and thus reducing the types of the busbar 2 between the battery cells. That is, the same busbar 2 between the battery cells can be fixedly connected to the connector support 5, and can be fixedly connected to the busbar support 3 at the same time, and can also be fixedly connected to the connecting part 62, thereby reducing the cost.

[0077] In some embodiments of the present invention, as Figure 3 、 Figure 4 and Figure 6 shown, the busbar support 3 is provided with a third avoidance hole 35, and the third avoidance hole 35 is disposed opposite to the installation groove 611 in the thickness direction of the first plate 11. It can be understood that the setting of the third avoidance hole 35 can avoid the connection between the first plate 11 and the temperature sensing body 7, so that the first plate 11 and the temperature sensing body 7 can be smoothly connected.

[0078] In some embodiments of the present invention, as Figure 3 、 Figure 4 and Figure 6 shown, the first plate 11 is provided with a fourth avoidance hole 16, and the fourth avoidance hole 16 is disposed opposite to the installation groove 611 in the thickness direction of the first plate 11. It can be understood that the setting of the fourth avoidance hole 16 can avoid the connection between the first plate 11 and the temperature sensing body 7, so that the first plate 11 and the temperature sensing body 7 can be smoothly connected.

[0079] In some embodiments of the present invention, as Figures 1 - 4 and Figure 6 shown, the first plate 11 and the busbar 2 between the battery cells are connected by a first connecting piece 13, the first plate 11 and the temperature sensing body 7 are connected by a second connecting piece 14, and the first connecting piece 13 and the second connecting piece 14 are spaced apart.

[0080] It can be understood that the first connecting piece 13 is a conductive path between the inter-cell busbar 2 and the FPC. The current is relatively large. When the current on the first connecting piece 13 passes through, a relatively large amount of heat will be generated. The first connecting piece 13 and the second connecting piece 14 are spaced apart, so that the temperature on the first connecting piece 13 can be prevented from affecting the detection of the temperature sensing body 7, thereby improving the detection accuracy.

[0081] Among them, in the present utility model, the inter-cell busbar 2 is arranged on one side of the first plate 11 in the width direction facing the second plate 12. On the side of the first plate 11 in the width direction facing the inter-cell busbar 2, there is a first connecting piece 13. The first plate 11 and the inter-cell busbar 2 are connected by the first connecting piece 13 such as a nickel sheet. The first connecting pieces 13 are multiple and spaced apart along the length direction of the first plate 11. The first plate 11 has a fourth avoidance hole 16. The fourth avoidance hole 16 and the installation groove 611 are arranged opposite to each other in the thickness direction of the first plate 11. The second connecting piece 14 is arranged on the hole wall of the fourth avoidance hole 16 along one side in the length direction of the first plate 11 and extends in the thickness direction of the first plate 11.

[0082] Thus, the first connecting piece 13 and the second connecting piece 14 are spaced apart, so that the temperature on the first connecting piece 13 can be prevented from affecting the detection of the temperature sensing body 7, thereby improving the detection accuracy.

[0083] The battery module according to an embodiment of the present utility model will be described below.

[0084] The battery module according to an embodiment of the present utility model includes the above-mentioned busbar assembly 10.

[0085] In the battery module according to an embodiment of the present utility model, by providing the above-mentioned busbar assembly 10, the FPC board 1 includes a first board 11 and a second board 12 that are connected to each other. The second board 12 is arranged between the two ends of the first board 11 in the length direction, and is arranged on one side of the first board 11 in the width direction and extends along the width direction of the first board 11. The low-voltage connector 4 is arranged on the second board 12 and is connected to the second board 12. The first board 11 is a straight board, so that the first board 11 does not need to be bent, thereby reducing the length of the first board 11, thereby reducing the length of the FPC board 1 and reducing the cost. At the same time, since the first board 11 is a straight board, when the first connecting pieces 13 at both ends of the first board 11 in the length direction are offset in the length direction of the first board 11, the first connecting pieces 13 at both ends of the first board 11 in the length direction will not be bent, thereby preventing the FPC board 1 from being torn.

[0086] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0087] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A busbar assembly, characterized in that: include: An FPC board, the FPC board comprising a first board and a second board connected to each other, the first board being a straight board, the second board being arranged between two ends of the first board in a length direction, and being arranged on one side of the first board in a width direction, and extending along the width direction of the first board; An inter-cell busbar, the inter-cell busbar being disposed on one side of the first plate in the thickness direction and connected to the first plate; A busbar support, the busbar support is arranged on a side of the inter-cell busbar away from the first plate, and is connected to both the first plate and the inter-cell busbar; A low voltage connector is disposed on the second board and connected to the second board.

2. The busbar assembly according to claim 1, characterized in that: Also includes: A connector bracket is arranged on a side of the bus bracket away from the inter-cell bus, and the connector bracket is connected to the inter-cell bus, the bus bracket and the low-voltage connector.

3. The busbar assembly according to claim 2, characterized in that: The busbar bracket has a first avoidance hole, and the connector bracket has a second avoidance hole. The first avoidance hole and the second avoidance hole are arranged opposite to each other in the thickness direction of the first plate.

4. The busbar assembly according to claim 2, characterized in that: The low-voltage connector includes a reinforcement plate and a connector body. The connector body is arranged on a side of the second plate away from the inter-cell bus. The reinforcement plate is arranged on a side of the second plate facing the inter-cell bus. The reinforcement plate is connected to the connector bracket.

5. The busbar assembly according to claim 2, characterized in that: The inter-cell busbar, the busbar bracket and the connector bracket are riveted; And / or, the busbar bracket, the connector bracket and the low-voltage connector are snap-fitted; and / or, the busbar bracket and the connector bracket are connected via a positioning pin; And / or, the busbar support and the first plate are riveted.

6. The busbar assembly according to claim 1, characterized in that: Also includes: A temperature sensing bracket, the temperature sensing bracket is arranged on a side of the busbar bracket away from the inter-cell busbar, and is connected to both the busbar bracket and the inter-cell busbar, and the temperature sensing bracket has a mounting groove on a side away from the inter-cell busbar; The temperature sensing body is suitable for being arranged in the installation groove, and the temperature sensing body is connected to the first plate.

7. The busbar assembly according to claim 6, characterized in that: The temperature sensing bracket comprises: A connecting portion and a mounting portion, wherein the connecting portion extends along the length direction of the first plate and is connected to the bus bracket and the bus between the battery cells, the mounting portion extends along the width direction of the first plate, the mounting groove is located at one end of the mounting portion in the length direction, and the end of the mounting portion facing away from the mounting groove is connected to the connecting portion.

8. The busbar assembly according to claim 7, characterized in that: The connecting portion is riveted to the inter-cell busbar and the busbar bracket; And / or, the busbar bracket has a third avoidance hole, and the third avoidance hole and the mounting groove are arranged opposite to each other in the thickness direction of the first plate; And / or, the first plate has a fourth avoidance hole, and the fourth avoidance hole and the mounting groove are arranged opposite to each other in the thickness direction of the first plate.

9. The busbar assembly according to claim 6, characterized in that: The first board is connected to the inter-cell busbar via a first connecting piece, the first board is connected to the temperature sensing body via a second connecting piece, and the first connecting piece is spaced apart from the second connecting piece.

10. A battery module, characterized in that: The invention comprises a busbar assembly according to any one of claims 1 to 9.

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