Battery pack

Abstract

The utility model discloses a battery pack. The battery pack comprises a module, the cover plate is connected with the module, and the cover plate is provided with a mounting opening; the CCS part comprises a first support, a second support and a BMS slave plate, the first support is connected with the module, the second support is located on the side, away from the module, of the first support and connected with the first support, the BMS slave plate is located between the first support and the second support and connected with the second support, the first support and the second support are insulating parts, and the second support and the BMS slave plate penetrate through the mounting opening. According to the battery pack disclosed by the utility model, the first bracket and the second bracket prevent the BMS slave plate from generating electrical short circuit, the good insulating property of the BMS slave plate when the battery pack works is ensured, and the cover plate only needs to be provided with the mounting port for the second bracket and the BMS slave plate to penetrate through, so that the structure of the cover plate is simple, the production and processing difficulty of the cover plate is effectively reduced, and the production cost is reduced. And the cost of the battery pack is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a battery pack. BACKGROUND

[0002] The BMS (Battery Management System) from board of the CCS (Cells Contact System) component is used for collecting the temperature, cell voltage and other data of the battery pack and transmitting to the BMS mainboard for processing, to ensure that the battery pack is safe, reliable and efficient in the life cycle. However, in the prior art, the BMS from board needs to maintain good insulation performance when working to prevent safety problems caused by electrical faults, so the cover plate of the battery pack usually has a special insulation structure to effectively insulate the BMS from board, but such a complex cover plate structure increases the difficulty of production and processing, thereby increasing the overall cost of the battery pack. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a battery pack, the cover plate of the battery pack is simple in structure, thereby effectively reducing the difficulty of production and processing of the cover plate, and further reducing the cost of the battery pack.

[0004] The battery pack according to the utility model embodiment comprises: a module; a cover plate connected with the module, the cover plate having a mounting port; a CCS component comprising a first support, a second support and a BMS from board, the first support being connected with the module, the second support being located on the side of the first support away from the module and connected with the first support, the BMS from board being located between the first support and the second support and connected with the second support, the first support and the second support being insulating components, and the second support and the BMS from board being arranged in the mounting port.

[0005] The battery pack according to the utility model embodiment, the cover plate is connected with the module, the cover plate has a mounting port, the CCS component comprises a first support, a second support and a BMS from board, the first support is connected with the module, the second support is located on the side of the first support away from the module and connected with the first support, the first support and the second support are insulating components, the BMS from board is located between the first support and the second support and connected with the second support, and the second support and the BMS from board are arranged in the mounting port, so that the first support and the second support prevent the BMS from board from electrical short circuit, ensure the good insulation performance of the BMS from board when the battery pack works, realize that the cover plate only needs to be provided with the mounting port for the second support and the BMS from board to pass through, so that the structure of the cover plate is simple, thereby effectively reducing the difficulty of production and processing of the cover plate, and further reducing the cost of the battery pack.

[0006] In some embodiments of the utility model, the CCS piece further includes: a busbar, the busbar is located between the first support and the BMS slave board, the busbar is connected with the module, the first support is connected with the busbar.

[0007] In some embodiments of the utility model, the CCS piece further includes: an FPC, the FPC is connected with the busbar and the BMS slave board respectively at both ends along the arrangement direction of the first support.

[0008] In some embodiments of the utility model, the FPC is connected with the busbar through foam glue.

[0009] In some embodiments of the utility model, the second support has a first rivet column on the side facing the first support, and the BMS slave board has a matching hole matched with the first rivet column.

[0010] In some embodiments of the utility model, the first support has a buckle on the side facing the second support, and the second support has a first clamping groove matched with the buckle.

[0011] In some embodiments of the utility model, the buckle is a plurality of, and the first clamping groove is a plurality of corresponding to the buckle.

[0012] In some embodiments of the utility model, the BMS slave board has a second clamping groove arranged opposite to the first clamping groove, and the buckle is arranged in the second clamping groove.

[0013] In some embodiments of the utility model, the first support has a positioning column on the side facing the second support, and the second support has a first positioning hole matched with the positioning column.

[0014] In some embodiments of the utility model, the module includes a plurality of battery cells, the plurality of battery cells are arranged along a first direction, the cover plate and the CCS piece are located on the same side of the module along a second direction, and the first direction and the second direction are perpendicular.

[0015] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0017] Figure 1 It is the structure diagram of battery pack according to the utility model embodiment.

[0018] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1;

[0019] Figure 3 is an exploded view of the battery pack according to an embodiment of the present application;

[0020] Figure 4 is Figure 3 is an enlarged view of B in FIG. 1;

[0021] Figure 5 is a matching structure diagram of the second bracket and the BMS slave plate according to an embodiment of the present application.

[0022] Reference signs:

[0023] 100, battery pack;

[0024] 1, module; 11, battery cell;

[0025] 2, cover plate; 21, mounting port; 22, flange;

[0026] 3, CCS piece; 31, first bracket; 311, buckle; 312, positioning column; 32, second bracket; 321, first riveting column; 322, first clamping groove; 323, first positioning hole; 33, BMS slave plate; 331, matching hole; 332, second clamping groove; 333, second positioning hole; 34, busbar; 35, FPC. DETAILED DESCRIPTION

[0027] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0028] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the restriction on the utility model. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0029] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] The battery pack 100 according to the embodiments of the utility model is described below with reference to the drawings.

[0031] As shown in Figures 1-4 The battery pack 100 according to the embodiments of the utility model includes a module 1, a cover plate 2 and a CCS piece 3.

[0032] The cover plate 2 is connected with the module 1, the cover plate 2 has a mounting port 21, the CCS piece 3 includes a first support 31, a second support 32 and a BMS slave plate 33, the first support 31 is connected with the module 1, the second support 32 is located on the side of the first support 31 away from the module 1 and is connected with the first support 31, the first support 31 and the second support 32 are insulating pieces, the BMS slave plate 33 is located between the first support 31 and the second support 32 and is connected with the second support 32, the second support 32 and the BMS slave plate 33 are arranged in the mounting port 21.

[0033] It can be understood that the BMS is used to collect the cell temperature, cell voltage and other data of each cell 11 in the module 1. Since the first support 31 and the second support 32 are insulating members, the BMS board 33 is located between the first support 31 and the module 1, thereby preventing the BMS board 33 from being electrically short-circuited with the module 1. At the same time, the BMS board 33 is located between the first support 31 and the second support 32, so that the cover plate 2 only needs to be provided with the mounting opening 21 for the second support 32 and the BMS board 33 to pass through. The second support 32 ensures the good insulation performance of the BMS board 33 during the operation of the battery pack 100, and further prevents safety problems caused by electrical faults. Therefore, the cover plate 2 of the present application has a simple structure, does not need to adopt a special-shaped structure, and only needs to adopt a die-cutting process to form the mounting opening 21, thereby effectively reducing the difficulty of production and processing of the cover plate 2, and thus reducing the cost of the battery pack 100.

[0034] At the same time, since the first support 31 is connected with the module 1, the second support 32 is connected with the first support 31, and the second support 32 is connected with the BMS board 33, the first support 31 and the second support 32 provide certain mechanical support and fixation for the BMS board 33, thereby ensuring the stability of the BMS board 33 and improving the reliability of the battery pack 100.

[0035] Further, the material of the first support 31 is combined from polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS), so that the first support 31 has high mechanical strength, impact resistance, temperature resistance and ultraviolet resistance of PC, and also has low temperature resistance, chemical resistance and good processing performance of ABS. Therefore, the first support 31 has high electrical insulation performance, which effectively prevents the BMS board 33 from being electrically short-circuited with the module 1.

[0036] The material of the second support 32 is combined from polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS), so that the second support 32 has high mechanical strength, impact resistance, temperature resistance and ultraviolet resistance of PC, and also has low temperature resistance, chemical resistance and good processing performance of ABS. Therefore, the second support 32 has high electrical insulation performance, which effectively prevents the BMS board 33 from being electrically short-circuited with the module 1.

[0037] According to the battery pack 100, the cover plate 2 is connected with the module 1, the cover plate 2 has a mounting port 21, the CCS piece 3 comprises a first support 31, a second support 32 and a BMS slave plate 33, the first support 31 is connected with the module 1, the second support 32 is located on the side, away from the module 1, of the first support 31 and is connected with the first support 31, the first support 31 and the second support 32 are insulating pieces, the BMS slave plate 33 is located between the first support 31 and the second support 32 and is connected with the second support 32, the second support 32 and the BMS slave plate 33 are arranged in the mounting port 21, so that the first support 31 and the second support 32 prevent the BMS slave plate 33 from electrical short circuit, guarantee the good insulation performance of the BMS slave plate 33 when the battery pack 100 works, realize that the cover plate 2 only needs to open the mounting port 21 for the second support 32 and the BMS slave plate 33 to pass through, so that the structure of the cover plate 2 is simple, thereby effectively reducing the difficulty of production and processing of the cover plate 2, and further reducing the cost of the battery pack 100.

[0038] In some embodiments of the utility model, as shown in Figures 1-4 The CCS piece 3 further comprises a busbar 34. Wherein, the busbar 34 is located between the first support 31 and the BMS slave plate 33, the busbar 34 is connected with the module 1, and the first support 31 is connected with the busbar 34. Therefore, by connecting the busbar 34 with the module 1 and connecting the first support 31 with the busbar 34, the indirect connection between the first support 31 and the module 1 is realized. At the same time, by connecting the busbar 34 with the module 1, the busbar 34 connects the positive and negative poles of the plurality of battery cells 11 in the module 1 together, so that the current generated by the plurality of battery cells 11 is concentrated to form a larger current output.

[0039] Further, the busbar 34 is connected with the first support 31 through a second hot rivet column. It can be understood that the material of the second hot rivet column connection has certain insulation performance, which can meet the electrical isolation requirement between the busbar 34 and the first insulating piece while realizing the connection between the busbar 34 and the first support 31. At the same time, since the second hot rivet column is solidified after cooling, a firm mechanical connection is formed between the busbar 34 and the first support 31, improving the reliability of the connection between the two.

[0040] In some embodiments of the utility model, as shown in Figures 1-4As shown, the CCS piece 3 further comprises a FPC 35 (Flexible Printed Circuit). The FPC 35 is connected with the busbar 34 and the BMS slave board 33 at both ends along the arrangement direction of the first support 31 and the first support 31. It can be understood that the FPC 35 can transmit the data signal collected by the BMS slave board 33 to the BMS slave board 33, and can also receive the control signal from the BMS slave board 33. At the same time, by connecting the FPC 35 with the busbar 34 and the BMS at both ends along the arrangement direction of the first support 31 and the first support 31, the BMS slave board 33 is further supported, the overall stability of the battery pack 100 is enhanced, and the connection loosening or damage caused by vibration or impact is prevented.

[0041] In some embodiments of the utility model, the FPC 35 is connected with the busbar 34 through the foam glue (not shown in the figure). Therefore, by connecting the FPC 35 with the busbar 34 through the foam glue, the connection of the FPC 35 and the busbar 34 is realized. At the same time, the setting of the foam glue realizes the spacing of the busbar 34 and the BMS slave board 33, thereby reducing the electrical interference and heat transfer, improving the overall performance and safety of the battery system. In addition, the flexibility and elasticity of the foam glue can play a good supporting and buffering role, protect the BMS slave board 33 from the influence of external impact and vibration, prevent the BMS slave board 33 from being damaged during the working or transporting process of the battery pack 100, and improve the service life of the battery pack 100.

[0042] In some embodiments of the utility model, as shown in the figure, Figure 5 As shown, the side of the second support 32 facing the first support 31 has a first rivet column 321, and the BMS slave board 33 has a matching hole 331 matched with the first rivet column 321. Therefore, by heating the first rivet column 321 to a softened state after being arranged in the matching hole 331, the connection of the second support 32 and the BMS slave board 33 is realized, and the first rivet column 321 is further solidified after cooling to ensure the firm mechanical connection between the second support 32 and the BMS slave board 33, and improve the reliability of the connection. At the same time, the material of the first rivet column 321 has certain insulation performance, which can meet the electrical isolation requirement between the second support 32 and the BMS slave board 33 while realizing the connection of the second support 32 and the BMS slave board 33.

[0043] Further, the side of the second support 32 facing the first support 31 has a plurality of first rivet columns 321, and the matching block is a plurality of matching blocks corresponding to the plurality of first rivet columns 321 one by one, further improving the connection strength of the second support 32 and the BMS slave board 33.

[0044] In some embodiments of the utility model, as shown in the figure, Figures 1-5As shown, the first support 31 has a buckle 311 on the side facing the second support 32, and the second support 32 has a first clamping groove 322 matched with the buckle 311. Thus, the first support 31 and the second support 32 are connected by the clamping connection of the buckle 311 and the first clamping groove 322, thereby realizing the fixation of the second support 32 and the BMS slave plate 33 connected with the second support 32. Meanwhile, considering the high-temperature condition, aging of the foam, and the like, the clamping connection of the buckle 311 and the first clamping groove 322 ensures the reliability of the connection between the first support 31 and the second support 32, plays a reinforcing and insulating protection role on the BMS slave plate 33, reduces the risk of damage to the BMS slave plate 33 in the process of vibration and transportation of parts and components, and the clamping connection structure of the buckle 311 and the first clamping groove 322 is simple, thereby reducing the overall cost.

[0045] In some embodiments of the utility model, the buckle 311 is a plurality of buckles, and the first clamping groove 322 is a plurality of first clamping grooves corresponding to the buckles 311. Thus, the connection strength of the first support 31 and the second support 32 is further improved by the cooperation of the plurality of buckles 311 and the corresponding first clamping grooves 322, thereby improving the overall reliability of the battery pack 100.

[0046] In some embodiments of the utility model, as shown in the drawings, Figures 1-5 The BMS slave plate 33 has a second clamping groove 332 arranged opposite to the first clamping groove 322, and the buckle 311 is arranged in the second clamping groove 332. Thus, the first support 31 is connected with the BMS slave plate 33 and the second support 32 by the cooperation of the buckle 311 arranged in the second clamping groove 332 and the first clamping groove 322, thereby further ensuring the stability of the BMS slave plate 33 and improving the overall structural strength.

[0047] In some embodiments of the utility model, as shown in the drawings, Figures 1-5 The first support 31 has a positioning column 312 on the side facing the second support 32, and the second support 32 has a first positioning hole 323 matched with the positioning column 312. Thus, the positioning column 312 and the first positioning hole 323 are matched before the first support 31 and the second support 32 are connected, thereby playing a pre-positioning role, realizing foolproofing, effectively improving the assembly efficiency of the battery pack 100, and reducing the cost.

[0048] Further, the BMS slave plate 33 has a second positioning hole 333 arranged opposite to the first positioning hole 323, and the positioning column 312 is arranged in the first positioning hole 323 and the second positioning hole 333, thereby further improving the assembly efficiency.

[0049] Further, the positioning columns 312 are multiple, and the first positioning holes 323 and the second positioning holes 333 are multiple one-to-one corresponding to the multiple positioning columns 312, so that the pre-positioning of the first support 31 and the second support 32 is better realized, and the assembly efficiency is reduced.

[0050] In some embodiments of the utility model, as shown in Figures 1-4 The module 1 includes multiple battery cells 11, the multiple battery cells 11 are arranged along a first direction, the cover plate 2 and the CCS piece 3 are located on the same side of the module 1 along a second direction, and the first direction and the second direction are perpendicular. Thus, through such a setting, the BMS from the board 33 can collect the temperature, voltage and current data of each battery cell 11, so that the layout of the battery pack 100 is more reasonable.

[0051] Further, the bus bar 34 is located between the first support 31 and the BMS from the board 33, the bus bar 34 is connected with the module 1, the first support 31 is connected with the bus bar 34, and through such a setting, the bus bar 34 can connect the positive and negative poles of the multiple battery cells 11 in the module 1 together, so that the rationality of the layout of the battery pack 100 is improved.

[0052] Optionally, the battery cell 11 is a blade battery cell.

[0053] In some embodiments, as shown in Figure 2 And Figure 4 As shown in the drawings, the cover plate 2 has a flange 22 extending towards the module 1 along the second direction at both ends along a third direction, the flange 22 is adhesively connected with the module 1, and the third direction, the first direction and the second direction are perpendicular to each other. Thus, the fixation of the cover plate 2 is realized through such a setting.

[0054] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" 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 the present specification, the illustrative description 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.

[0055] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that, include: Module; A cover plate, which is connected to the module, and has an installation port; The CCS component includes a first bracket, a second bracket, and a BMS slave board. The first bracket is connected to the module. The second bracket is located on the side of the first bracket away from the module and is connected to the first bracket. The BMS slave board is located between the first bracket and the second bracket and is connected to the second bracket. The first bracket and the second bracket are insulating components. The second bracket and the BMS slave board pass through the mounting port.

2. The battery pack according to claim 1, characterized in that, The CCS component also includes: A busbar is located between the first bracket and the BMS slave board, and the busbar is connected to the module. The first bracket is connected to the busbar.

3. The battery pack according to claim 2, characterized in that, The CCS component also includes: The FPC is connected to the busbar and the BMS slave board at both ends along the first bracket and the first bracket arrangement direction, respectively.

4. The battery pack according to claim 3, characterized in that, The FPC is connected to the busbar via foam adhesive.

5. The battery pack according to claim 1, characterized in that, The second bracket has a first hot-riveting post on the side facing the first bracket, and the BMS slave plate has a mating hole that mates with the first hot-riveting post.

6. The battery pack according to claim 1, characterized in that, The first bracket has a buckle on the side facing the second bracket, and the second bracket has a first slot that engages with the buckle.

7. The battery pack according to claim 6, characterized in that, There are multiple buckles, and the first slot is a plurality of buckles that correspond one-to-one with each buckle.

8. The battery pack according to claim 6, characterized in that, The BMS slave board has a second slot that is opposite to the first slot, and the buckle is inserted into the second slot.

9. The battery pack according to claim 6, characterized in that, The first bracket has a positioning post on the side facing the second bracket, and the second bracket has a first positioning hole that mates with the positioning post.

10. The battery pack according to claim 1, characterized in that, The module includes multiple battery cells arranged along a first direction, and the cover plate and the CCS component are located on the same side of the module along a second direction, wherein the first direction and the second direction are perpendicular.

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