Ccs assembly, battery pack, and powered device

Abstract

This application relates to a CCS module, a battery pack, and an electrical device. The CCS module includes a bracket and a busbar. The bracket includes a frame body and a limiting protrusion. The frame body has a mounting groove with sidewalls and a bottom wall. The limiting protrusion has a connecting end and a free end positioned opposite each other, with the direction from the connecting end to the free end being a first direction. The connecting end is located on the sidewall of the groove. In the groove depth direction, a first guide surface is provided on the side of the limiting protrusion facing away from the bottom wall, and this first guide surface is inclined towards the first direction near the bottom wall. The busbar, located in the mounting groove, can be engaged between the bottom wall and the limiting protrusion via the first guide surface. By providing a first guide surface on the side of the limiting protrusion facing away from the bottom wall, this application allows the busbar to slide smoothly between the limiting protrusion and the bottom wall during installation, reducing the force required during installation. This design makes busbar installation smoother.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a CCS component, battery pack, and electrical device. Background Technology

[0002] In related technologies, the CCS (cell collection system) component includes a bracket and a busbar. The bracket includes a bracket body and a limiting protrusion. The bracket body has a mounting groove with side walls and a bottom wall. The limiting protrusion is located on the side wall of the mounting groove, and the busbar is engaged between the limiting protrusion and the bottom wall of the groove via the limiting protrusion.

[0003] However, the inventors discovered that a significant force was required to engage the busbar between the retaining protrusion and the bottom wall of the slot. Utility Model Content

[0004] This application provides a CCS component, battery pack, and electrical device designed to reduce the force applied to the busbar during the process of snapping the busbar between the limiting protrusion and the bottom wall of the slot.

[0005] To achieve the above objectives, according to a first aspect of this application, a CCS component is provided, comprising:

[0006] A bracket includes a bracket body and a limiting bracket protrusion. The bracket body has a mounting groove with sidewalls and a bottom wall. The limiting bracket protrusion has a connecting end and a free end disposed opposite to each other. The direction from the connecting end to the free end is a first direction. The connecting end is located on the sidewall of the groove. In the groove depth direction, the limiting bracket protrusion has a first guide surface on the side facing away from the bottom wall. The first guide surface is inclined towards the first direction in the direction near the bottom wall.

[0007] The busbar, located in the mounting groove, can be inserted between the bottom wall of the groove and the limiting protrusion via the first guide surface.

[0008] Optionally, the limiting card protrusion is provided with a second guide surface on the side near the bottom wall of the groove, and the second guide surface is inclined in the direction away from the bottom wall of the groove and away from the side wall of the groove.

[0009] And / or, the bracket is configured as a blister bracket.

[0010] Optionally, in the direction from the connecting end to the free end, the size of the limiting protrusion is less than or equal to 3 mm.

[0011] Optionally, multiple limiting clips are provided in the circumferential direction of the groove sidewall.

[0012] Optionally, the groove sidewall includes two first sidewalls, which are arranged opposite to each other in the length direction of the mounting groove, and each of the two first sidewalls is provided with a limiting protrusion.

[0013] Optionally, the bottom wall of the tank is provided with a limiting post, which passes through the busbar.

[0014] Optionally, the limiting post is configured as a hot-riveted post.

[0015] Optionally, the busbar is provided with a through hole, the limiting post passes through the through hole, and the through hole is configured as an oblong hole.

[0016] According to a second aspect of this application, a battery pack is provided, including the aforementioned CCS component.

[0017] According to a third aspect of this application, an electrical device is provided, comprising the aforementioned battery pack.

[0018] In the CCS assembly of this application embodiment, the bracket includes a frame body and a limiting protrusion. The frame body has a mounting groove with a side wall and a bottom wall. The limiting protrusion has a connecting end and a free end disposed opposite to each other. The direction from the connecting end to the free end is a first direction. The connecting end is located on the side wall of the groove. In the groove depth direction, the side of the limiting protrusion away from the bottom wall of the groove has a first guide surface. The first guide surface is inclined towards the first direction in the direction close to the bottom wall of the groove. A busbar is disposed in the mounting groove and can be inserted between the bottom wall of the groove and the limiting protrusion through the first guide surface.

[0019] By setting a first guide surface on the side of the limiting bracket protrusion facing away from the bottom wall of the slot, the busbar can smoothly slide into the space between the limiting bracket protrusion and the bottom wall of the slot along the inclined first guide surface during installation, reducing the force required during installation. This design makes the installation of the busbar smoother, reduces installation difficulty, and improves production efficiency.

[0020] The inclined design of the first guide surface not only facilitates the installation of the busbar but also provides a more stable limiting effect after installation. The structural design of the limiting bracket effectively prevents the busbar from loosening due to vibration or external forces during use.

[0021] By simplifying the bus installation process, the difficulty and time required for manual operations in production are reduced, thereby lowering production costs. This design also reduces the defect rate caused by improper installation, further optimizing production costs.

[0022] A stable mounting structure and optimized limiting design reduce the risk of busbar loosening or poor contact during use. This improvement helps enhance the overall safety of the battery system and reduces safety hazards caused by electrical connection problems.

[0023] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0024] 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 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.

[0025] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0026] Figure 1 This is a schematic diagram of the overall structure of the CCS component provided in an exemplary embodiment of this disclosure.

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 yes Figure 1 Another structural diagram of the CCS component;

[0029] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0030] Figure 5 yes Figure 1 Another structural diagram of the CCS component;

[0031] Figure 6 yes Figure 5 Enlarged view of point C in the middle.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100, CCS component; 200, bracket; 210, bracket body; 220, mounting groove; 230, groove sidewall; 231, first sidewall; 232, second sidewall; 240, groove bottomwall; 250, limiting post; 260, limiting latch protrusion; 261, connecting end; 262, free end; 263, first guide surface; 264, second guide surface; 300, busbar; 310, through hole. Detailed Implementation

[0034] 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0035] According to the first aspect of this application, referring to Figures 1 to 6 This disclosure provides a CCS assembly, which includes a bracket 200 and a busbar 300. The bracket 200 includes a bracket body 210 and a limiting protrusion 260. The bracket body 210 has a mounting groove 220, which has a sidewall 230 and a bottomwall 240. The limiting protrusion 260 has a connecting end 261 and a free end 262 disposed opposite to each other. The direction from the connecting end 261 to the free end 262 is a first direction. The connecting end 261 is located on the sidewall 230. In the groove depth direction of the mounting groove 220, the limiting protrusion 260 has a first guide surface 263 on the side facing away from the bottomwall 240. The first guide surface 263 is inclined towards the first direction in the direction near the bottomwall 240. The busbar 300 is disposed in the mounting groove 220 and can be engaged between the bottomwall 240 and the limiting protrusion 260 via the first guide surface 263.

[0036] By providing a first guide surface 263 on the side of the limiting protrusion 260 facing away from the bottom wall 240 of the groove, the busbar 300 can smoothly slide into the space between the limiting protrusion 260 and the bottom wall 240 along the inclined first guide surface 263 during installation, reducing the force required during installation. This design makes the installation of the busbar 300 smoother, reduces installation difficulty, and improves production efficiency.

[0037] The inclined design of the first guide surface 263 not only facilitates the installation of the busbar 300, but also provides a more stable limiting effect for the busbar 300 after installation. The structural design of the limiting bracket 260 can effectively prevent the busbar 300 from loosening due to vibration or external force during use.

[0038] By simplifying the installation process of the busbar 300, the difficulty and time required for manual operation in production are reduced, thereby lowering production costs. This design also reduces the defect rate caused by improper installation, further optimizing production costs.

[0039] A stable mounting structure and optimized limiting design reduce the risk of loosening or poor contact in the busbar 300 during use. This improvement helps enhance the overall safety of the battery system and reduces safety hazards caused by electrical connection problems.

[0040] In some embodiments, the limiting protrusion 260 is provided with a second guide surface 264 on the side near the bottom wall 240 of the groove, and the second guide surface 264 is inclined in the direction away from the bottom wall 240 of the groove and in the direction away from the side wall 230 of the groove.

[0041] The design of the second guide surface 264 provides guidance for the disassembly of the busbar 300. During disassembly, the inclined second guide surface 264 reduces the friction between the busbar 300 and the limiting protrusion 260, making it easier for the busbar 300 to slide out of the mounting slot 220. Due to the inclined structure of the second guide surface 264, the busbar 300 can gradually detach from the limiting protrusion 260 along the second guide surface 264 during disassembly, thereby reducing the external force required. This design can significantly improve the disassembly efficiency of the busbar 300 and reduce disassembly time, especially in scenarios requiring frequent maintenance or replacement of the busbar 300. The limiting protrusion 260 of related technologies may cause the busbar 300 to be damaged due to excessive force during disassembly. The design of the second guide surface 264 allows the busbar 300 to detach from the limiting protrusion 260 more smoothly, thereby reducing the risk of damage caused by improper disassembly. During installation and disassembly, the second guide surface 264 provides more stable guidance, reducing structural deformation or damage caused by improper operation, thereby improving the overall reliability of the CCS assembly.

[0042] However, this design is not limited to this. In some other embodiments, the second guide surface 264 is arranged in parallel with the bottom wall 240 of the groove to increase the difficulty of the busbar 300 detaching from the mounting groove 220.

[0043] In some embodiments, the size of the limiting protrusion 260 in the direction from the connecting end 261 to the free end 262 is less than or equal to 3 mm. This size is as follows... Figure 2 As shown in D in the diagram.

[0044] Thus, the limiting protrusion 260 is smaller in size in the direction from the connecting end 261 to the free end 262. This smaller size effectively reduces the overall volume of the CCS assembly, making it more suitable for use in battery packs with limited space. The smaller size also reduces the force required to install and remove the busbar 300, making operation easier and reducing the risk of damage due to improper handling. The smaller size of the limiting protrusion 260 also reduces material usage, lowering production costs. Furthermore, it reduces deformation or damage caused by vibration or external forces during use, thereby improving the reliability of the CCS assembly. The smaller size of the limiting protrusion 260 also makes high-precision manufacturing easier, reducing material waste and further lowering production costs.

[0045] In some embodiments, a plurality of limiting protrusions 260 are provided in the circumferential direction of the groove sidewall 230.

[0046] Multiple limiting protrusions 260 can limit the busbar 300 from multiple directions, thereby significantly improving its stability in the mounting groove 220 and reducing loosening caused by vibration or external force.

[0047] When the limiting protrusions 260 are evenly distributed in the circumferential direction of the groove sidewall 230, the stress on the manifold 300 during installation and use can be evenly dispersed by the multiple limiting protrusions 260, avoiding damage caused by stress concentration.

[0048] Increasing the number of limit protrusions 260 can improve the overall structural strength of the groove sidewall 230, enabling it to better withstand external impacts or loads.

[0049] The design of multiple limit brackets 260 makes the busbar 300 more securely fixed in the mounting slot 220, reducing failures caused by loosening, thereby reducing maintenance frequency and replacement costs.

[0050] In some embodiments, the groove sidewall 230 includes two first sidewalls 231, which are arranged opposite to each other in the length direction of the mounting groove 220, and each of the two first sidewalls 231 is provided with a limiting protrusion 260.

[0051] The two opposing limit protrusions 260 can provide bidirectional limiting function to ensure the stability of the busbar 300 in the mounting groove 220 and reduce loosening caused by vibration or external force.

[0052] Two limiting protrusions 260 limit the busbar 300 from both sides, which can more accurately fix the position of the busbar 300 and prevent it from shifting during installation, thereby improving the reliability of the entire CCS assembly.

[0053] In some embodiments, the groove sidewall 230 further includes a second sidewall 232 connecting the two first sidewalls 231, and the second sidewall 232 is provided with a limiting protrusion 260.

[0054] In some embodiments, the bottom wall 240 of the tank is provided with a limiting post 250, which passes through the manifold 300.

[0055] The limiting post 250, inserted through the busbar 300, provides precise positioning and fixation for the busbar 300, ensuring its accurate position within the mounting groove 220 and reducing loosening or poor contact caused by improper installation. The limiting post 250 effectively prevents the busbar 300 from shifting due to vibration or external forces during use, thereby improving the reliability of the entire battery system.

[0056] In some embodiments, the limiting post 250 is configured as a hot-riveted post.

[0057] The hot-riveted studs are formed by softening them through heating, providing a high-strength fixation and ensuring the stability of the manifold 300 within the mounting groove 220. This connection method is suitable for applications subject to long-term mechanical vibration and environmental changes.

[0058] During the heating process, the hot riveting column can soften and fill the assembly gap, ensuring a tight fit between the manifold 300 and the bottom wall 240 of the groove, and preventing loosening.

[0059] Hot riveting softens the material through localized heating, effectively reducing stress concentration at the connection points and thus extending the service life of the connectors.

[0060] Hot riveting is suitable for mass production, is simple to operate, fast, and requires no additional fasteners or adhesives. This process also allows for simultaneous riveting at multiple points, further improving production efficiency.

[0061] It is worth mentioning that the use of the limit card protrusion 260 helps to reduce the number of hot riveting pillars, thereby reducing the number of processes for detecting the defect rate of hot riveting pillars and improving the production efficiency of CCS components.

[0062] However, this design is not limited to this. In some other embodiments, the limiting post 250 is configured as a locking post, and the limiting post 250 is provided with a fastening part to engage with the busbar 300.

[0063] In some embodiments, the busbar 300 is provided with a through hole 310, and the limiting post 250 passes through the through hole 310, which is configured as an oblong hole.

[0064] During assembly, the oblong hole can effectively avoid over-positioning problems caused by part dimensional tolerances, thereby improving the success rate and efficiency of assembly.

[0065] The design of the waist-shaped hole allows for optimization of the fixing effect of the busbar 300 during assembly by adjusting the position of the limit post 250, thereby enhancing the stability of the entire CCS assembly.

[0066] However, this design is not limited to this. In some other embodiments, the via 310 may also be configured as a circular hole, but not limited to this.

[0067] In some embodiments, the support 200 is configured as a vacuum-formed support 200. Vacuum forming molds are relatively simple and low-cost, and compared to injection molds, their development difficulty is lower, effectively reducing initial equipment investment. The vacuum forming process can adjust the material thickness and shape according to requirements, reducing material waste and thus lowering raw material costs. Vacuum forming has a short cycle time and fast production speed, making it suitable for mass production and further reducing the cost per unit product. Vacuum-formed supports 200 typically use lightweight, thin flame-retardant PC films and other materials, which are lighter than traditional injection-formed supports 200, effectively reducing the overall weight of the CCS module and improving the space utilization of the battery pack. The PC material commonly used in vacuum-formed supports 200 has good insulation properties, meeting the electrical insulation requirements of CCS modules in the battery pack. Vacuum-formed products have good corrosion resistance, adapting to the complex chemical environment inside the battery pack. The vacuum forming process can quickly adjust the product shape and size according to different design requirements, adapting to the diverse structural requirements of CCS modules. Vacuum-formed supports 200 can be integrated with other components through simple processes such as cutting and hot riveting, simplifying the production process and facilitating automated assembly. The materials used in the 200 vacuum forming stand, such as PC, have good recyclability and meet environmental protection requirements.

[0068] Secondly, embodiments of this utility model provide a battery pack, which includes the aforementioned CCS component. The CCS component adopts all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0069] A battery pack typically includes a battery case for housing one or more individual battery cells. The battery case prevents liquids or other foreign matter from affecting the charging or discharging of the individual battery cells.

[0070] The battery cell mentioned in the embodiments of this application may include an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The battery cell mainly relies on the movement of metal ions between the positive and negative electrode plates to operate. The positive electrode includes a positive current collector and a positive active material layer, with the positive active material layer coated on the surface of the positive current collector. The positive current collector includes a positive electrode coating area and a positive electrode tab connected to the positive electrode coating area. The positive electrode coating area is coated with the positive active material layer, while the positive electrode tab is not coated with the positive active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes positive active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet includes a negative current collector and a negative active material layer, the negative active material layer being coated on the surface of the negative current collector. The negative current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area. The negative electrode coating area is coated with the negative active material layer, while the negative electrode tab is not coated with the negative active material layer. The material of the negative current collector can be copper, and the negative active material layer includes negative active material, which can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0071] Currently, battery packs are being used more and more widely. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As the application areas of battery packs continue to expand, the market demand is also constantly increasing.

[0072] The battery pack described in the embodiments of this application is used in electrical equipment.

[0073] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. 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. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0074] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0075] The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery pack is installed inside the vehicle, which can be located at the bottom, front, or rear of the vehicle. The battery pack can be used to power the vehicle; for example, it can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller is used to control the battery pack to power the motor, for example, to meet the vehicle's power needs during starting, navigation, and driving.

[0076] Thirdly, the embodiments of this utility model provide an electrical device that includes the aforementioned battery pack. The battery pack adopts all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0077] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0078] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0079] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0080] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A CCS assembly, characterized by, include: A bracket includes a bracket body and a limiting protrusion. The bracket body has a mounting groove with sidewalls and a bottom wall. The limiting protrusion has a connecting end and a free end disposed opposite to each other. The direction from the connecting end to the free end is a first direction. The connecting end is located on the sidewall of the groove. In the groove depth direction, the limiting protrusion has a first guide surface on the side facing away from the bottom wall. The first guide surface is inclined towards the first direction in the direction close to the bottom wall. The busbar, located in the mounting groove, can be inserted between the bottom wall of the groove and the limiting protrusion via the first guide surface.

2. The CCS assembly of claim 1, wherein, The limiting card protrusion has a second guide surface on the side close to the bottom wall of the groove, and the second guide surface is inclined in the direction away from the bottom wall of the groove and away from the side wall of the groove. And / or, the bracket is configured as a blister bracket.

3. The CCS assembly of claim 1, wherein, In the direction from the connecting end to the free end, the size of the limiting protrusion is less than or equal to 3 mm.

4. The CCS assembly of claim 1, wherein, Multiple limiting clips are protruding in the circumferential direction of the groove sidewall.

5. The CCS assembly of claim 4, wherein, The groove sidewall includes two first sidewalls, which are arranged opposite each other in the length direction of the mounting groove, and each of the two first sidewalls is provided with a limiting protrusion.

6. The CCS assembly of any one of claims 1 to 5, wherein, The bottom wall of the trough is provided with a limiting post, which passes through the busbar.

7. The CCS assembly of claim 6, wherein, The limiting post is configured as a hot-riveted post.

8. The CCS assembly of claim 6, wherein, The busbar is provided with a through hole, and the limiting post passes through the through hole. The through hole is configured as an oblong hole.

9. A battery pack, characterized by, Includes the CCS component as described in any one of claims 1 to 8.

10. An electric device, characterized by Includes the battery pack as described in claim 9.

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