Battery pack
The integrated busbar assembly solves the problem of low integration of CCS components inside the battery pack, improves space utilization, reduces production costs, and improves production efficiency.
Patent Information
- Application Number
- CN202422748133.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The integration of CCS components inside existing battery packs is low, resulting in insufficient space for module layout, increased mold design costs, and reduced production efficiency and standardization.
It adopts an integrated busbar assembly, including a mounting bracket, a first busbar group and a second busbar group. It is compatible with different single cell arrangement directions. The integrated busbar assembly is an integrated structure with an integrated information collection design.
It improves the internal space utilization of the battery pack, saves mold design costs, improves production efficiency, reduces production costs, reduces the risk of misassembly, and improves production efficiency.
Smart Images
Figure CN223487271U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery technology, specifically to a battery pack. Background Technology
[0002] Lithium-ion batteries are currently widely used in industries such as electric vehicles. In use, lithium-ion batteries are typically integrated into modular battery packs from multiple individual cells. To ensure that each individual cell operates within a specified voltage and temperature range, a CCS (Cells Contact System) assembly is usually used to collect information from each individual cell.
[0003] However, current battery packs typically have multiple CCS modules in series, which sacrifices internal module layout space, increases mold design costs, and leads to low production efficiency and low standardization of battery packs. Utility Model Content
[0004] This application provides a battery pack that can improve the integration level of the integrated busbar assembly, thereby increasing the utilization rate of the internal space of the battery pack, saving the mold design cost of the integrated busbar assembly, improving production efficiency and reducing production costs.
[0005] This application provides a battery pack. The battery pack has intersecting first and second directions. The battery pack includes a first battery group, which includes at least two individual cells arranged along the first direction. The battery pack also includes a second battery group, which includes at least two individual cells arranged along the second direction. The battery pack further includes an integrated busbar assembly, which includes a mounting bracket and is an integral structure; the integrated busbar assembly also includes a first busbar group disposed on the mounting bracket, the first busbar group being electrically connected to the individual cells of the first battery group; the integrated busbar assembly also includes a second busbar group disposed on the mounting bracket, the second busbar group being electrically connected to the individual cells of the second battery group.
[0006] In one embodiment of this application, the battery pack further has a third direction, and the first direction, the second direction, and the third direction intersect each other; the outer surface of a single cell includes a top surface, a bottom surface, a first side surface, and a second side surface, the top surface and the bottom surface are distributed along the third direction, the first side surface and the second side surface are connected between the top surface and the bottom surface, and the first side surface and the second side surface are adjacent, wherein the area of the first side surface is larger than the area of the second side surface; in the first battery pack, the first side surfaces of two adjacent single cells are arranged opposite each other along the first direction; in the second battery pack, the first side surfaces of two adjacent single cells are arranged opposite each other along the second direction.
[0007] In one embodiment of this application, a first bus group includes at least two buses arranged along a first direction, and the buses of the first bus group are electrically connected to individual cells of a first battery group; a second bus group includes at least two buses arranged along a second direction, and the buses of the second bus group are electrically connected to individual cells of a second battery group.
[0008] In one embodiment of this application, the number of first battery packs is at least two, and each first battery pack is arranged along a second direction; the number of first busbar groups is at least two, and each first busbar group is arranged along a second direction, and the busbars of each first busbar group are electrically connected to the individual cells of the corresponding first battery pack.
[0009] In one embodiment of this application, the second battery pack is located on one side of the first battery pack in the second direction; the second bus pack is located on one side of the first bus pack in the second direction, such that the bus of the second bus pack is electrically connected to the individual cells of the second battery pack.
[0010] In one embodiment of this application, the number of second battery packs is at least two, each second battery pack is located on the same side of the first battery pack in the second direction, and each second battery pack is arranged at intervals along the first direction; the number of second busbar groups is at least two, each second busbar group is located on the same side of the first busbar group in the second direction, and each second busbar group is arranged at intervals along the first direction, and the busbars of each second busbar group are electrically connected to the individual cells of the corresponding second battery pack.
[0011] In one embodiment of this application, the integrated busbar assembly further includes a snap fastener, which includes a fastening portion and a connecting portion. The fastening portion is connected to the mounting bracket via the connecting portion, and the fastening portion is configured to fasten the busbar to the mounting bracket.
[0012] In one embodiment of this application, one of the mounting bracket and the busbar is provided with a positioning post, and the other is provided with a positioning groove. The positioning post is embedded in the positioning groove to limit the position of the busbar on the mounting bracket.
[0013] In one embodiment of this application, the integrated busbar assembly further includes a first snap-fit, a second snap-fit, and a third snap-fit disposed on the mounting bracket. The first snap-fit and the second snap-fit are arranged at intervals along a first direction, and the third snap-fit is located on one side of the first snap-fit and the second snap-fit in a second direction. The first snap-fit, the second snap-fit, and the third snap-fit cooperate to fasten the same busbar to the mounting bracket. The mounting bracket is also provided with a positioning post, which is located between the first snap-fit and the second snap-fit in the first direction. A positioning groove is provided on one side of the busbar in the second direction, and the positioning post is embedded in the positioning groove to limit the position of the busbar on the mounting bracket.
[0014] In one embodiment of this application, the integrated busbar assembly further includes a slave control circuit board disposed on the mounting bracket.
[0015] In one embodiment of this application, one of the slave control circuit board and the mounting bracket is provided with a foolproof post, and the other is provided with a foolproof hole. The foolproof post is embedded in the foolproof hole, and the foolproof post and the foolproof hole are located near one side edge of the slave control circuit board in the second direction.
[0016] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a battery pack. The battery pack includes an integrated busbar assembly, the mounting bracket of which is an integral structure. A first busbar group and a second busbar group are integrated on the mounting bracket. The first busbar group is electrically connected to the individual cells of a first battery pack, and the second busbar group is electrically connected to the individual cells of a second battery pack. In other words, the integrated busbar assembly of this application adopts an integrated design, compatible with first and second battery packs with different individual cell arrangement directions. The integrated busbar assembly integrates information acquisition designs for different battery packs, improving the integration level of the integrated busbar assembly, thereby increasing the utilization rate of the internal space of the battery pack. Furthermore, it saves on mold design costs for the integrated busbar assembly, improves production efficiency, and reduces production costs. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the battery pack of this application;
[0019] Figure 2 This is a schematic diagram of the structure of an embodiment of the first battery pack and the second battery pack of this application;
[0020] Figure 3 This is a schematic diagram of the structure of a single battery cell according to an embodiment of this application;
[0021] Figure 4 This is a schematic diagram of the structure of an embodiment of the integrated busbar assembly of this application;
[0022] Figure 5 yes Figure 4 The diagram shows a top view of the integrated busbar assembly.
[0023] Figure 6 yes Figure 4 The diagram shows the structure of area A of the integrated busbar assembly.
[0024] Figure 7 yes Figure 5 The diagram shows the structure of area B of the integrated busbar assembly.
[0025] Explanation of reference numerals in the attached figures:
[0026] 10 Single cell; 10a First battery pack; 10b Second battery pack; 11 Top surface; 12 Bottom surface; 13 First side surface; 14 Second side surface; 20 Integrated busbar assembly; 21 Mounting bracket; 22 Busbar; 22a First busbar assembly; 22b Second busbar assembly; 23 Clip; 23a First clip; 23b Second clip; 23c Third clip; 231 Fastening part; 232 Connecting part; 241 Positioning post; 242 Positioning groove; 25 Slave control circuit board; 261 Anti-foolproof post; 262 Anti-foolproof hole. Detailed Implementation
[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "up," "down," "left," and "right" generally refer to up, down, left, and right in the actual use or working state of the device, specifically the drawing directions in the accompanying drawings.
[0028] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "stacked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0029] This application provides a battery pack, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.
[0030] To address the technical problem of low integration of CCS components within battery packs in existing technologies, one embodiment of this application provides a battery pack. The battery pack has intersecting first and second directions. The battery pack includes a first battery group comprising at least two individual cells arranged along the first direction. The battery pack also includes a second battery group comprising at least two individual cells arranged along the second direction. The battery pack further includes an integrated busbar assembly, which includes a mounting bracket and is an integral structure; the integrated busbar assembly also includes a first busbar group disposed on the mounting bracket, the first busbar group being electrically connected to the individual cells of the first battery group; the integrated busbar assembly also includes a second busbar group disposed on the mounting bracket, the second busbar group being electrically connected to the individual cells of the second battery group. This will be described in detail below.
[0031] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an embodiment of the battery pack of this application.
[0032] In one embodiment, the battery pack includes a plurality of individual battery cells 10. Individual battery cells 10 include, but are not limited to, lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and this disclosure does not limit the specific type. The battery pack provides power to an electrical device. The electrical device can be a mobile phone, portable device, laptop computer, electric vehicle, electric car, ship, spacecraft, electric toy, and power tool, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.
[0033] The battery pack also includes an integrated busbar assembly 20, namely a CCS (Cells Contact System) assembly. The integrated busbar assembly 20 is electrically connected to the individual cells 10 of the battery pack. The integrated busbar assembly 20 is configured to collect information from the individual cells 10 to ensure that the individual cells 10 operate within specified voltage and temperature ranges. The collection of information from the individual cells 10 by the integrated busbar assembly 20 and the control of the individual cells 10 based on the collected information are within the understanding of those skilled in the art and will not be elaborated upon here.
[0034] Please refer to the following: Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of an embodiment of the first and second battery packs of this application. Figure 3This is a schematic diagram of the structure of a single battery cell according to an embodiment of this application.
[0035] In one embodiment, the battery pack has intersecting first direction X and second direction Y. The first direction X and the second direction Y can be substantially perpendicular, for example, the included angle between the first direction X and the second direction Y can be 80° to 90°, etc. Preferably, the first direction X and the second direction Y are perpendicular to each other.
[0036] The individual cells 10 of the battery pack are divided into a first battery pack 10a and a second battery pack 10b. The first battery pack 10a includes at least two individual cells 10 arranged along a first direction X, and the second battery pack 10b includes at least two individual cells 10 arranged along a second direction Y.
[0037] Specifically, the battery pack also has a third direction Z, and the first direction X, the second direction Y, and the third direction Z intersect each other pairwise. The first direction X, the second direction Y, and the third direction Z can be substantially perpendicular to each other pairwise, for example, the included angle between each pairwise direction X, the second direction Y, and the third direction Z can be 80° to 90°, etc. Preferably, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other pairwise.
[0038] An integrated busbar assembly 20 is disposed above the individual battery 10 in the third direction Z. The outer surface of the individual battery 10 includes a top surface 11, a bottom surface 12, a first side surface 13, and a second side surface 14. The top surface 11 and the bottom surface 12 are distributed along the third direction Z, and the terminal post of the individual battery 10 is disposed on the top surface 11. The first side surface 13 and the second side surface 14 are connected between the top surface 11 and the bottom surface 12, and the first side surface 13 and the second side surface 14 are adjacent. The area of the first side surface 13 is larger than the area of the second side surface 14. In the first battery pack 10a, the first side surfaces 13 of two adjacent individual batteries 10 are arranged opposite each other along the first direction X. In the second battery pack 10b, the first side surfaces 13 of two adjacent individual batteries 10 are arranged opposite each other along the second direction Y.
[0039] Please refer to the following: Figure 4 and Figure 5 , Figure 4 This is a structural schematic diagram of an embodiment of the integrated busbar assembly of this application. Figure 5 yes Figure 4 The diagram shows a top view of the integrated busbar assembly.
[0040] In one embodiment, the integrated busbar assembly 20 includes a mounting bracket 21, a first busbar group 22a, and a second busbar group 22b. The mounting bracket 21 is an integral structure. The first busbar group 22a is disposed on the mounting bracket 21 and is electrically connected to the individual battery 10 of the first battery pack 10a. The second busbar group 22b is disposed on the mounting bracket 21 and is electrically connected to the individual battery 10 of the second battery pack 10b.
[0041] In this embodiment, compared to the case where the first busbar group and the second busbar group are respectively set on different mounting brackets, the mounting bracket 21 is an integral structure, and both the first busbar group 22a and the second busbar group 22b are set on the mounting bracket 21 of this embodiment. In other words, the architecture of the integrated busbar assembly 20 of this application adopts an integrated solution, which is compatible with the first battery pack 10a and the second battery pack 10b with different single cell battery 10 arrangement directions. The integrated busbar assembly 20 integrates the information acquisition design of different battery packs, which can improve the integration level of the integrated busbar assembly 20, thereby improving the utilization rate of the internal space of the battery pack, and can save the mold design cost of the integrated busbar assembly 20, improve production efficiency and reduce production costs.
[0042] Furthermore, the first bus group 22a includes at least two busbars 22 arranged along the first direction X, and the busbars 22 of the first bus group 22a are electrically connected to the individual cells 10 of the first battery pack 10a; the second bus group 22b includes at least two busbars 22 arranged along the second direction Y, and the busbars 22 of the second bus group 22b are electrically connected to the individual cells 10 of the second battery pack 10b.
[0043] In one embodiment, the number of first battery packs 10a is at least two, and each first battery pack 10a is arranged along the second direction Y. Correspondingly, the number of first busbar groups 22a is at least two, and each first busbar group 22a is arranged along the second direction Y, and the busbar 22 of each first busbar group 22a is electrically connected to the individual battery 10 of the corresponding first battery pack 10a.
[0044] For example, such as Figure 2 and Figure 5As shown, the first battery pack 10a has three groups, and the first bus group 22a has three corresponding groups. The first battery pack 10a and the first bus group 22a are configured in a one-to-one correspondence. The bus 22 of the first bus group 22a is electrically connected to the individual battery cells 10 of the first battery pack 10a located in the third direction Z, enabling information collection from the individual battery cells 10 of the first battery pack 10a to ensure that the individual battery cells 10 of the first battery pack 10a can operate within a specified voltage and temperature range. The first bus group 22a includes two rows of busbars 22 arranged along the second direction Y, with each row of busbars 22 arranged along the first direction X.
[0045] Of course, in other embodiments of this application, the number of first battery packs 10a is not limited to the three groups in the example above. For example, the number of first battery packs 10a can be two or more groups, and each first battery pack 10a is arranged along the second direction Y. This is not limited here.
[0046] In one embodiment, the second battery pack 10b is located on one side of the first battery pack 10a in the second direction Y. Correspondingly, the second bus group 22b is located on one side of the first bus group 22a in the second direction Y, such that the bus 22 of the second bus group 22b is electrically connected to the individual cells 10 of the second battery pack 10b. The bus 22 of the second bus group 22b is electrically connected to the individual cells 10 of the second battery pack 10b opposite in the third direction Z, realizing the acquisition of information of the individual cells 10 of the second battery pack 10b, so as to ensure that the individual cells 10 of the second battery pack 10b can operate within a specified voltage and temperature range.
[0047] Of course, in other embodiments of this application, the second battery pack 10b is not limited to being located on one side of the first battery pack 10a in the second direction Y as in the example above. For example, the individual cells 10 of the first battery pack 10a may be arranged around the second battery pack 10b, etc., which is not limited here. The embodiments of this application are described using the example of the second battery pack 10b being located on one side of the first battery pack 10a in the second direction Y, only for the purpose of discussion, and are not intended to limit the relative positional relationship between the first battery pack 10a and the second battery pack 10b.
[0048] In one embodiment, the number of second battery packs 10b is at least two, each second battery pack 10b is located on the same side of the first battery pack 10a in the second direction Y, and the second battery packs 10b are arranged at intervals along the first direction X. Correspondingly, the number of second busbar groups 22b is at least two, each second busbar group 22b is located on the same side of the first busbar group 22a in the second direction Y, and the second busbar groups 22b are arranged at intervals along the first direction X. The busbars 22 of each second busbar group 22b are electrically connected to the individual cells 10 of the corresponding second battery pack 10b.
[0049] For example, such as Figure 2 As shown, there are four sets of second battery packs 10b. These four sets of second battery packs 10b are located on the same side of the first battery pack 10a in the second direction Y, with two sets of second battery packs 10b arranged at one end of the first battery pack 10a in the first direction X, and the other two sets of second battery packs 10b arranged at the other end of the first battery pack 10a in the first direction X. Figure 5 As shown, correspondingly, there are four groups of second busbar groups 22b. These four groups of second busbar groups 22b are located on the same side of the first busbar group 22a in the second direction Y, with two groups of second busbar groups 22b arranged at one end of the first busbar group 22a in the first direction X, and the other two groups of second busbar groups 22b arranged at the other end of the first busbar group 22a in the first direction X. The busbars 22 of each second busbar group 22b are electrically connected to the individual cells 10 of the second battery pack 10b opposite in the third direction Z, realizing the information collection of the individual cells 10 of the second battery pack 10b, so as to ensure that the individual cells 10 of the second battery pack 10b can operate within the specified voltage and temperature range. The second busbar group 22b includes two rows of busbars 22 arranged along the first direction X, and each row of busbars 22 is arranged along the second direction Y.
[0050] Of course, in other embodiments of this application, each second battery pack 10b is not limited to being located on the same side of the first battery pack 10a in the second direction Y. For example, each second battery pack 10b may be located on different sides of the first battery pack 10a, and correspondingly, each second busbar group 22b may be located on different sides of the first busbar group 22a. This is not limited here.
[0051] It should be noted that the integrated busbar assembly 20 in this embodiment adopts an integrated design, meaning that the busbars 22 and other data acquisition components corresponding to each individual battery cell 10 in the battery pack are all integrated into a single mounting bracket 21. Unlike existing technologies where battery packs typically have multiple series of CCS components, this embodiment improves the integration level of the integrated busbar assembly 20, thereby increasing the utilization rate of the internal space of the battery pack. Furthermore, it saves on mold design costs and reduces the types of structural components, while also saving on labor costs, reducing the risk of incorrect assembly, saving time, and making production convenient, fast, and efficient, thus improving production efficiency and reducing production costs. In addition, the integrated busbar assembly 20 in this embodiment is also compatible with a first battery pack 10a and a second battery pack 10b with different individual battery cell 10 arrangement directions. The integrated busbar assembly 20 integrates the information acquisition design of different battery packs, further improving the integration level of the integrated busbar assembly 20. Of course, in other embodiments of this application, it is permissible to integrate the current collection elements such as the busbar 22 corresponding to some individual battery cells 10 into different integrated busbar assemblies 20, which is not limited here.
[0052] Please refer to the following: Figure 6 , Figure 6 yes Figure 4 The diagram shows the structure of area A of the integrated busbar assembly.
[0053] In one embodiment, the integrated busbar assembly 20 further includes a snap-fit 23 configured to engage the busbar 22 with the mounting bracket 21. This embodiment uses the snap-fit 23 to restrict the position of the busbar 22 in the third direction Z, facilitating electrical connections between the busbar 22 and the individual battery 10, as well as other circuit components. This embodiment avoids the need for thermal riveting between the busbar 22 and the mounting bracket 21, thus avoiding the time-consuming thermal riveting process, saving labor costs, and eliminating the need for thermal riveting fixing posts to improve space utilization.
[0054] Specifically, the buckle 23 includes a fastening part 231 and a connecting part 232. The fastening part 231 is connected to the mounting bracket 21 via the connecting part 232, and the fastening part 231 is configured to fasten the busbar 22 to the mounting bracket 21.
[0055] In one embodiment, one of the mounting bracket 21 and the busbar 22 is provided with a positioning post 241 and the other is provided with a positioning groove 242. The positioning post 241 is embedded in the positioning groove 242 to limit the position of the busbar 22 on the mounting bracket 21 so as to facilitate the electrical connection between the busbar 22 and the single battery 10 and other circuit components.
[0056] For example, the integrated busbar assembly 20 also includes a first snap fastener 23a, a second snap fastener 23b, and a third snap fastener 23c disposed on the mounting bracket 21. The first snap fastener 23a and the second snap fastener 23b are arranged at intervals along the first direction X, and the third snap fastener 23c is located on one side of the first snap fastener 23a and the second snap fastener 23b in the second direction Y. The first snap fastener 23a, the second snap fastener 23b, and the third snap fastener 23c cooperate to fasten the same busbar 22 to the mounting bracket 21. The mounting bracket 21 is also provided with a positioning post 241, which is located between the first snap fastener 23a and the second snap fastener 23b in the first direction X. The busbar 22 has a positioning groove 242 on one side in the second direction Y, and the positioning post 241 is embedded in the positioning groove 242 to limit the position of the busbar 22 on the mounting bracket 21.
[0057] In one embodiment, the integrated busbar assembly 20 further includes a slave control circuit board 25, which is disposed on the mounting bracket 21. The slave control circuit board 25 is electrically connected to the individual battery cell 10 and is used to collect parameter information of the individual battery cell 10 to ensure that the individual battery cell 10 can operate within a specified voltage and temperature range. In this embodiment, the integrated busbar assembly 20 also integrates the slave control circuit board 25, which can further improve the integration level of the integrated busbar assembly 20, thereby improving the utilization rate of the internal space of the battery pack, increasing production efficiency, and reducing production costs.
[0058] Further, if Figure 7 As shown, one of the slave control circuit board 25 and the mounting bracket 21 is provided with a foolproof post 261, and the other is provided with a foolproof hole 262. The foolproof post 261 is embedded in the foolproof hole 262, and the foolproof post 261 and the foolproof hole 262 are located near one edge of the slave control circuit board 25 in the second direction Y. In other words, this embodiment achieves the foolproof function of the foolproof post 261 and the foolproof hole 262 by setting them near one edge of the slave control circuit board 25 in the second direction Y, thus preventing the slave control circuit board 25 from being installed incorrectly by rotating it 180°.
[0059] For example, the mounting bracket 21 is provided with a foolproof post 261, and the slave control circuit board 25 is provided with a foolproof hole 262. The foolproof post 261 is embedded in the foolproof hole 262 to prevent the slave control circuit board 25 from being rotated 180° and installed incorrectly. The connection between the slave control circuit board 25 and the mounting bracket 21 can be fastened with rivets. Compared with the snap-fit solution, the rivet fastening solution reduces structural components, lowers mold opening costs, and the round rivet structure has the advantages of strong locking stability.
[0060] In summary, this application provides a battery pack. The battery pack includes an integrated busbar assembly, the mounting bracket of which is an integral structure. A first busbar group and a second busbar group are integrated on the mounting bracket. The first busbar group is electrically connected to the individual cells of a first battery pack, and the second busbar group is electrically connected to the individual cells of a second battery pack. In other words, the integrated busbar assembly of this application adopts an integrated design, compatible with first and second battery packs with different individual cell arrangement directions. The integrated busbar assembly integrates information acquisition designs for different battery packs, improving the integration level of the integrated busbar assembly, thereby increasing the utilization rate of the internal space of the battery pack. Furthermore, it saves on mold design costs for the integrated busbar assembly, improves production efficiency, and reduces production costs.
[0061] The battery pack provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A battery pack, characterized in that, The battery pack has intersecting first and second directions, and the battery pack includes: A first battery pack includes at least two individual cells arranged along the first direction; The second battery pack includes at least two individual cells arranged along the second direction; and Integrated busbar assembly, including: The mounting bracket is a single, integrated structure. A first busbar assembly, disposed on the mounting bracket, is electrically connected to the individual cells of the first battery pack; and The second busbar is disposed on the mounting bracket and is electrically connected to the individual cells of the second battery pack.
2. The battery pack according to claim 1, characterized in that, The battery pack also has a third direction, and the first direction, the second direction, and the third direction intersect each other; the outer surface of the single cell includes a top surface, a bottom surface, a first side surface, and a second side surface, the top surface and the bottom surface are distributed along the third direction, the first side surface and the second side surface are connected between the top surface and the bottom surface, and the first side surface and the second side surface are adjacent to each other, wherein the area of the first side surface is larger than the area of the second side surface; In the first battery pack, the first sides of two adjacent individual cells are arranged opposite each other along the first direction; in the second battery pack, the first sides of two adjacent individual cells are arranged opposite each other along the second direction.
3. The battery pack according to claim 1 or 2, characterized in that, The first busbar group includes at least two busbars arranged along the first direction, and the busbars of the first busbar group are electrically connected to the individual cells of the first battery pack. The second bus group includes at least two busbars arranged along the second direction, and the busbars of the second bus group are electrically connected to the individual cells of the second battery pack.
4. The battery pack according to claim 3, characterized in that, The number of the first battery packs is at least two, and each of the first battery packs is arranged along the second direction; The number of the first busbar groups is at least two, each of the first busbar groups is arranged along the second direction, and the busbars of each first busbar group are electrically connected to the individual cells of the corresponding first battery group.
5. The battery pack according to claim 3, characterized in that, The second battery pack is located on one side of the first battery pack in the second direction; The second bus group is located on one side of the first bus group in the second direction, such that the busbars of the second bus group are electrically connected to the individual cells of the second battery pack.
6. The battery pack according to claim 5, characterized in that, The number of the second battery packs is at least two, each of the second battery packs is located on the same side of the first battery pack in the second direction, and each of the second battery packs is arranged at intervals along the first direction; The number of the second busbar groups is at least two, each of the second busbar groups is located on the same side of the first busbar group in the second direction, and each of the second busbar groups is arranged at intervals along the first direction, and the busbars of each second busbar group are electrically connected to the individual cells of the corresponding second battery group.
7. The battery pack according to claim 3, characterized in that, The integrated busbar assembly further includes a snap fastener, which includes a snap-fit portion and a connecting portion. The snap-fit portion is connected to the mounting bracket via the connecting portion, and the snap-fit portion is configured to snap the busbar onto the mounting bracket.
8. The battery pack according to claim 3, characterized in that, One of the mounting bracket and the busbar is provided with a positioning post, and the other is provided with a positioning groove. The positioning post is embedded in the positioning groove to limit the position of the busbar on the mounting bracket.
9. The battery pack according to claim 3, characterized in that, The integrated busbar assembly further includes a first clip, a second clip, and a third clip disposed on the mounting bracket. The first clip and the second clip are arranged at intervals along the first direction, and the third clip is located on one side of the first clip and the second clip in the second direction. The first clip, the second clip, and the third clip cooperate to fasten the same busbar to the mounting bracket. The mounting bracket is also provided with a positioning post, which is located between the first buckle and the second buckle in the first direction. The busbar is provided with a positioning groove on one side in the second direction, and the positioning post is embedded in the positioning groove to limit the position of the busbar on the mounting bracket.
10. The battery pack according to claim 3, characterized in that, The integrated busbar assembly also includes a slave control circuit board, which is disposed on the mounting bracket.
11. The battery pack according to claim 10, characterized in that, One of the slave control circuit board and the mounting bracket is provided with a foolproof post, and the other is provided with a foolproof hole. The foolproof post is embedded in the foolproof hole, and the foolproof post and the foolproof hole are located near one edge of the slave control circuit board in the second direction.