Electric connection structure, battery module and battery pack
By designing an electrical connection structure with brackets and limiting structures, the assembly process of the tabs and busbars is simplified, solving the problem of low production efficiency of solid-state battery modules and achieving more efficient welding and lower costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI GUOXUAN NEW ENERGY CO LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-05-05
AI Technical Summary
Solid-state battery modules have low production efficiency, mainly due to the cumbersome and inefficient welding process between the tabs and the busbars, which affects the mass production process.
An electrical connection structure was designed, including a bracket, a busbar, and a limiting structure. The busbar is inserted into a slot from top to bottom, and the tabs are inserted into a channel from bottom to top. The limiting structure stops and limits the busbar within the slot, simplifying the assembly steps of the tabs and the busbar and avoiding additional fixing connections.
It improves the production efficiency of solid-state battery modules, simplifies the welding steps of tabs and busbars, reduces the probability of poor soldering, improves the welding yield, and reduces labor costs.
Smart Images
Figure CN224204295U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, and more specifically, to an electrical connection structure, a battery module, and a battery pack. Background Technology
[0002] With the growing global demand for clean energy and sustainable transportation, electric vehicles and renewable energy technologies are rapidly developing, becoming key forces driving the energy transition. Against this backdrop, the rise of solid-state battery technology is seen as a significant breakthrough for the battery industry. Compared to traditional liquid electrolyte batteries, solid-state batteries use solid electrolytes, which not only greatly reduce the risk of electrolyte leakage and combustion, significantly improving battery system safety, but also offer higher energy density, reaching 500Wh / kg, far exceeding the 200-300Wh / kg of liquid batteries. This means that, for the same weight, solid-state batteries can provide longer driving range and faster charging speeds. Furthermore, solid-state electrolytes have better temperature adaptability than liquid electrolytes, maintaining stable performance over a wider temperature range, which is crucial for the use of electric vehicles in various environments. The advantages of solid-state batteries in material selection are also reflected in their environmental friendliness. Containing little or no harmful metals, they align better with the global trend of low-carbon development, demonstrating the enormous potential of solid-state batteries in future battery technology and applications.
[0003] However, the industrial production of solid-state batteries faces challenges in manufacturing processes. Solid-state batteries typically use a soft-pack packaging with an aluminum-plastic film, which is lightweight and relatively inexpensive, but also introduces complexity in the tab connection. In existing technologies, the tabs are mostly thin sheets made of flexible materials, making the welding process with the busbar cumbersome and inefficient. Traditional methods require first moving the busbar perpendicular to the cross-section of the tab so that the tab passes through the busbar; then, the busbar is fixed to a plastic bracket with bolts; next, the tab needs to be bent to ensure a tight fit with the busbar; finally, welding fixtures are used to complete the welding of the tab to the busbar. As can be seen from the above, in the process of moving the busbar so that the tab can pass through the busbar smoothly, attention needs to be paid to the positional relationship between the tab and the inner wall of the through hole on the busbar for the tab to pass through. After the tab is successfully inserted, the busbar needs to be fixedly connected to the plastic bracket. This series of steps consumes a lot of time, resulting in low production efficiency of solid-state battery modules and seriously restricting the mass production process of solid-state batteries. Utility Model Content
[0004] The main objective of this invention is to provide an electrical connection structure, a battery module, and a battery pack that can solve the problem of low production efficiency of solid-state battery modules.
[0005] To achieve the above objectives, according to one aspect of the present invention, an electrical connection structure is provided, comprising: a bracket including a first slot, the top of the first slot having a first opening, a first channel being provided on a first sidewall of the first slot, the first channel penetrating the first sidewall in a first direction, the first channel being configured to allow an electrode tab to pass through; a busbar, the busbar having a second channel extending in a vertical direction, the second channel being configured to allow an electrode tab to pass through, one end of the second channel penetrating the bottom of the busbar and forming a first electrode tab penetration opening, the busbar being able to be inserted into the first slot from the first opening, after the busbar is inserted into the first slot, the busbar being disposed opposite to the first sidewall, the first channel and the second channel being disposed correspondingly; and a limiting structure disposed on one side of the first slot, capable of stopping and limiting the busbar located in the first slot in a first direction.
[0006] Furthermore, there are multiple first slots, which are arranged sequentially along the second direction. Each first slot is provided with at least one busbar, and the busbars located in different first slots are mutually insulated.
[0007] Furthermore, the width of the opening of the first electrode ear gradually increases in the direction away from the top of the second channel.
[0008] Furthermore, the limiting structure includes a first limiting member extending in a second direction. The first limiting member is connected to the top of the bracket. After the busbar is inserted into the first slot, the first limiting member can stop and limit the top of the busbar in the first direction.
[0009] Furthermore, the limiting structure also includes a second limiting member extending along the second direction. The first limiting member and the second limiting member are vertically spaced on the same side of the first slot. The second limiting member is located below the first limiting member. After the busbar is inserted into the first slot, the second limiting member can stop and limit the bottom of the busbar in the first direction.
[0010] Furthermore, the bracket also includes a second slot, and the electrical connection structure also includes an output structure. The second slot is located at the first or last end of the bracket. The top of the second slot has a second opening. A third channel is provided on the second sidewall of the second slot. The third channel penetrates the second sidewall along the first direction. A fourth channel is provided on the output structure. One end of the fourth channel penetrates the bottom of the output structure and forms a second tab penetration opening. Both the third and fourth channels are configured to allow the tab to pass through. Part of the output structure can be inserted into the second slot through the second opening. After the output structure is inserted into the second slot, the output structure is positioned opposite to the second sidewall. The third and fourth channels are positioned correspondingly. The limiting structure can stop and limit the output structure located in the second slot in the first direction.
[0011] Furthermore, along the second direction, a clearance notch is provided on the side of the second slot away from the first slot. The clearance notch communicates with the second opening. The output structure includes an insertion section and a connecting section connected together. The fourth channel is disposed in the insertion section. The insertion section can be inserted into the second slot from the second opening. The connecting section is located outside the second slot. The length of the clearance notch is greater than or equal to the movement path of the connecting section. The connecting section is used for electrical connection with an external device. And / or, the width of the opening of the second electrode ear through the port gradually increases along the direction away from the top of the fourth channel.
[0012] Furthermore, the connecting section includes a first segment and a second segment arranged at an angle. The first segment is connected to the insertion segment and has an insulating structure. One end of the second segment is connected to the first segment, and the other end of the second segment has a connecting hole.
[0013] Furthermore, the limiting structure includes a third limiting member extending along the second direction. The third limiting member is connected to the top of the bracket. After the output structure is inserted into the second slot, the third limiting member can stop and limit the top of the output structure in the first direction.
[0014] Furthermore, the limiting structure also includes a fourth limiting member extending along the second direction. The fourth limiting member and the third limiting member are arranged vertically at intervals on the same side of the second slot. The fourth limiting member is located below the third limiting member. After the output structure is inserted into the second slot, the fourth limiting member can stop and limit the bottom of the output structure in the first direction.
[0015] Furthermore, the bracket includes a body and a protruding edge and a plurality of spacers disposed on the body. The protruding edge is disposed at the bottom of the body and protrudes laterally toward the body. The plurality of spacers are spaced apart along a second direction, and a first slot is formed between two adjacent spacers.
[0016] Furthermore, each first slot is provided with a bus, and the first slot is configured to fit the bus inserted therein.
[0017] Furthermore, at least two connecting posts are provided on the side of the bracket away from the first slot.
[0018] According to another aspect of the present invention, a battery module is provided, comprising: at least two electrical connection structures as described above; a cell unit comprising a plurality of cells arranged along a second direction, wherein along a first direction, the cell unit has a first side and a second side disposed opposite to each other, and each of the first side and the second side is provided with at least one electrical connection structure.
[0019] According to another aspect of the present invention, a battery pack is provided, comprising: the electrical connection structure as described above or the battery module as described above.
[0020] Applying the technical solution of this utility model, the tab of the battery cell first exits from the first channel, and then the busbar can be inserted into the first slot from top to bottom through the first opening. During the process of the busbar entering the first slot, the tab can gradually enter the second channel from bottom to top through the first tab insertion opening (i.e., the tab exits from the busbar). When the busbar is inserted into the first slot, the limiting structure can stop and limit the busbar in the first direction to prevent the busbar from coming out of the first slot. After the tab exits from the second channel, the tab can be bent to fit the tab with the busbar, and then the two are welded together. In this application, by inserting the busbar into the first slot from top to bottom, the tab can be gradually inserted into the second channel from bottom to top. When inserting into the first slot, it is only necessary to align the first tab insertion opening with the corresponding tab, making the tab exiting process simpler, shortening the assembly time of the tab and the busbar, and improving the production efficiency of solid-state battery modules. In addition, after the busbar is inserted into the first slot, the limiting structure can stop and limit the busbar in the first direction to prevent the busbar from coming out of the first slot. There is no need to fix the busbar to the bracket with screws or other fixing structures, which can further simplify the assembly steps of the tab and the busbar, thereby further improving the production efficiency of solid-state battery modules. Attached Figure Description
[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:
[0022] Figure 1 A schematic diagram of the support structure of the electrical connection structure according to an embodiment of the present invention is shown;
[0023] Figure 2 A schematic diagram of the electrical connection structure according to an embodiment of the present invention is shown;
[0024] Figure 3 A schematic diagram of the busbar structure according to an embodiment of the present invention is shown;
[0025] Figure 4 A schematic diagram of the output structure of an embodiment of the present invention is shown;
[0026] Figure 5 An exploded view of the structural units of an embodiment of the present invention is shown;
[0027] Figure 6 A schematic diagram of the battery module structure of an embodiment of the present invention is shown (without electrical connection structure and strap).
[0028] Figure 7An exploded view of a battery module (with an electrical connection structure installed) according to an embodiment of the present invention is shown.
[0029] Figure 8 A schematic diagram of the battery module according to an embodiment of the present invention is shown.
[0030] The above figures include the following reference numerals:
[0031] 10. Bracket; 101. Body; 103. Spacing; 11. First slot; 111. First opening; 112. First sidewall; 113. First channel; 12. Second slot; 121. Second opening; 122. Second sidewall; 123. Third channel; 124. Clearance notch; 13. Connecting post; 20. Electrode; 30. Busbar; 31. Second channel; 32. First electrode through-hole; 40. Limiting structure ; 41. First limiting component; 42. Second limiting component; 43. Third limiting component; 44. Fourth limiting component; 50. Output structure; 51. Fourth channel; 52. Second electrode ear insertion port; 53. Insertion section; 54. Connection section; 541. First segment; 542. Second segment; 543. Connection hole; 544. Insulation structure; 60. Battery cell; 70. Heat-conducting structure; 71. Mounting hole; 80. End plate; 90. Binding strap. Detailed Implementation
[0032] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0033] In existing technologies, solid-state batteries generally adopt a soft-pack packaging form of aluminum-plastic film. The tabs of solid-state batteries are thin sheets with a relatively soft texture. Generally, the tabs are passed through the busbar, bent and attached to the busbar, and then welded. The busbar is usually fixed to the plastic bracket by hot riveting, clips, etc., which has low process efficiency and restricts the mass production of solid-state batteries.
[0034] The holes on the busbar for the tabs to pass through are usually elongated holes. When welding the tabs to the busbar, the elongated holes need to be aligned with the corresponding tabs. Then, the busbar is gradually moved closer to the tabs along the first direction (i.e., the direction perpendicular to the cross-section of the tab). Multiple tabs are then simultaneously passed through their corresponding elongated holes. During the insertion process, the position of the outer circumference of the tab and the inner wall of the elongated hole needs to be constantly monitored to ensure that the tabs 20 pass smoothly through the elongated holes on the busbar. After all the tabs have passed through the busbar, they need to be fixed to the plastic bracket by hot riveting, clips, etc. The entire assembly process is quite cumbersome and seriously affects the production efficiency of solid-state battery modules.
[0035] To solve the above problems, see [reference] Figures 1 to 4As shown, this utility model provides an electrical connection structure, which includes: a bracket 10, including a first slot 11, the top of the first slot 11 having a first opening 111, a first channel 113 provided on the first sidewall 112 of the first slot 11, the first channel 113 penetrating the first sidewall 112 along a first direction, and the first channel 113 being configured to allow the tab 20 to pass through; a busbar 30, the busbar 30 having a second channel 31 extending in a vertical direction, the second channel 31 being configured to allow... The first electrode 20 protrudes through the first channel 31, and one end of the second channel 31 penetrates the bottom of the busbar 30 to form the first electrode through-hole 32. The busbar 30 can be inserted into the first slot 11 through the first opening 111. After the busbar 30 is inserted into the first slot 11, the busbar 30 is positioned opposite to the first side wall 112, and the first channel 113 is positioned corresponding to the second channel 31. The limiting structure 40 is positioned on one side of the first slot 11 and can stop and limit the busbar 30 located in the first slot 11 in the first direction.
[0036] In this embodiment, the first direction refers to the thickness direction of the first sidewall 112. The bracket 10 is configured to be mounted on the battery cell unit, which includes a plurality of battery cells 60 arranged sequentially along the second direction. The tabs 20 of the battery cells 60 first pass through the first channel 113, and then the busbar 30 can pass through the first opening 111 from top to bottom into the first slot 11. During the process of the busbar 30 passing through the first slot 11, the tabs 20 can gradually pass through the first tab passage 32 from bottom to top into the second channel 31 (i.e., the tabs 20 pass out of the busbar 30). When the busbar 30 is inserted into the first slot 11, the limiting structure 40 can stop and limit the busbar 30 in the first direction to prevent the busbar 30 from coming out of the first slot 11. After the tabs 20 pass out of the second channel 31, the tabs 20 can be bent so that the tabs 20 fit with the busbar 30, and then the two are welded together.
[0037] In this application, the busbar 30 is inserted into the first slot 11 from top to bottom, allowing the tabs 20 to be gradually inserted into the second channel 31 from bottom to top. When inserting into the first slot 11, it is only necessary to align the first tab insertion opening 32 with the corresponding tab 20, making the tab 20 insertion process simpler and shortening the assembly time between the tab 20 and the busbar 30, thereby improving the production efficiency of the solid-state battery module. In addition, after the busbar 30 is inserted into the first slot 11, the limiting structure 40 can stop and limit the busbar 30 in the first direction to prevent the busbar 30 from coming out of the first slot 11. There is no need to fix the busbar 30 to the bracket 10 with screws or other fixing structures, which can further simplify the assembly steps of the tabs 20 and the busbar 30, thereby further improving the production efficiency of the solid-state battery module.
[0038] In addition, after the busbar 30 is inserted into the first slot 11, the bracket 10 can support the busbar 30. When the tab 20 and the busbar 30 are soldered, the support strength of the busbar 30 can be improved, the probability of poor soldering can be reduced, and the yield of soldering can be improved.
[0039] It should be noted that the number of second channels 31 on the busbar 30 can be set according to actual needs. When there are at least two first channels 113 on the first sidewall 112, the at least two first channels 113 are arranged at intervals along the second direction. When there are at least two second channels 31 on the busbar 30, the at least two second channels 31 are arranged at intervals along the second direction. The number of first channels 113 provided on the first sidewall 112 of the first slot 11 is the same as the number of second channels 31 on the busbar 30 inserted therein. In addition, the electrolyte of the battery cell 60 in this application can be solid or liquid. The top of the busbar 30 is used for current flow, and the width of the upper part of the busbar 30 can be set according to actual needs.
[0040] Solid-state battery assembly refers to the process of combining multiple battery cells 60 in series or parallel in a certain way to form a battery module with higher voltage or greater current output capability. During solid-state battery assembly, the tabs 20 and busbars 30 need to be welded to achieve series or parallel connections between the battery cells 60. With the electrical connection structure of this application, after the tabs 20 extend from the busbars 30, there is no need to fix the busbars 30 to the support 10, reducing the difficulty of welding the tabs 20 to the busbars 30 and reducing the assembly steps, thereby improving the process efficiency of solid-state battery assembly and reducing labor costs.
[0041] In existing technologies, busbars are typically fitted onto tabs, with the tabs passing through elongated holes in the busbar. To ensure the tabs can pass smoothly through the busbar, the elongated holes need to be relatively wide, which reduces the welding area between the tab and the busbar, hindering the welding of the tabs. In this application, the busbar moves from the top to the bottom of the tab. During this movement, the tab gradually passes through the first tab insertion opening 32 into the second channel, thus enabling the tab to exit the busbar. Compared to existing technologies, only the width of the second channel needs to be greater than the thickness of the tab; there is no need to make the width of the second channel excessively large. This ensures sufficient welding area between the tab and the busbar, facilitating the welding of the tab.
[0042] In one embodiment, the bracket 10 is made of plastic.
[0043] In one embodiment, the thickness of the busbar 30 ranges from 0.1 mm to 5 mm.
[0044] Preferably, the thickness of the busbar 30 is in the range of 0.5mm to 3mm.
[0045] In one embodiment, bus 30 is made of aluminum.
[0046] In one embodiment, the busbar 30 is made of 1-series aluminum. 1-series aluminum refers to aluminum materials with an aluminum content of 99% or higher. 1-series aluminum has a high aluminum content, stable chemical properties, and strong electrical and thermal conductivity.
[0047] See also Figures 1 to 4 As shown, in one embodiment of the present invention, there are multiple first slots 11, which are arranged sequentially along the second direction. Each first slot 11 is provided with at least one busbar 30, and the busbars 30 located in different first slots 11 are mutually insulated.
[0048] In this embodiment, the busbars 30 located in different first slots 11 are insulated from each other, which can prevent short circuits between different busbars 30.
[0049] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the width of the opening of the first electrode ear through-hole 32 gradually increases in the direction away from the top of the second channel 31.
[0050] The above configuration facilitates the insertion of the tab 20 into the second channel 31, and also facilitates the insertion of the tab 20 out of the busbar 30.
[0051] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the limiting structure 40 includes a first limiting member 41 extending along a second direction. The first limiting member 41 is connected to the top of the bracket 10. After the busbar 30 is inserted into the first slot 11, the first limiting member 41 can stop and limit the top of the busbar 30 in the first direction.
[0052] The above settings prevent the busbar 30 from falling out of the first slot 11.
[0053] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the limiting structure 40 further includes a second limiting member 42 extending along a second direction. The first limiting member 41 and the second limiting member 42 are arranged vertically at intervals on the same side of the first slot 11. The second limiting member 42 is located below the first limiting member 41. After the busbar 30 is inserted into the first slot 11, the second limiting member 42 can stop and limit the bottom of the busbar 30 in the first direction.
[0054] In this embodiment, the second limiting member 42 is located below the first limiting member 41. The two can respectively stop and limit the top and bottom of the busbar 30 in the first direction to prevent the busbar 30 from falling out of the first slot 11, thereby improving the overall structural stability of the electrical connection structure.
[0055] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the bracket 10 further includes a second slot 12, and the electrical connection structure further includes an output structure 50. The second slot 12 is located at the first or last end of the bracket 10. The top of the second slot 12 has a second opening 121. A third channel 123 is provided on the second sidewall 122 of the second slot 12. The third channel 123 penetrates the second sidewall 122 along a first direction. A fourth channel 51 is provided on the output structure 50. One end of the fourth channel 51 penetrates the bottom of the output structure 50 and forms a second tab penetration opening 52. Both the third channel 123 and the fourth channel 51 are configured to allow the tab 20 to pass through. Part of the output structure 50 can be inserted into the second slot 12 through the second opening 121. After the output structure 50 is inserted into the second slot 12, the output structure 50 is positioned opposite to the second sidewall 122, and the third channel 123 is positioned corresponding to the fourth channel 51. The limiting structure 40 can stop and limit the output structure 50 located in the second slot 12 in the first direction.
[0056] In this embodiment, when the bracket 10 is installed in the battery cell, the tab 20 needs to pass through the third channel 123. The output structure 50 can be inserted into the second slot 12 from top to bottom through the second opening 121. During the process of the output structure 50 being inserted into the second slot 12, the tab 20 can gradually pass through the second tab insertion opening 52 from bottom to top into the fourth channel 51 (i.e., the tab 20 exits from the output structure 50). After the output structure 50 is inserted into the second slot 12, the limiting structure 40 can stop and limit the output structure 50 in the first direction to prevent the output structure 50 from coming out of the second slot 12. After the tab 20 exits from the fourth channel 51, the tab 20 can be bent so that the tab 20 fits against the output structure 50, and then the two are welded together.
[0057] It should be noted that the output structure 50 is located at the first or last end of the bracket 10, and the output structure 50 can serve as the total positive or total negative output of the battery module. The first direction refers to the thickness direction of the second sidewall 122, and the thickness direction of the first sidewall 112 is the same as the thickness direction of the second sidewall 122.
[0058] See also Figures 1 to 4As shown, in one embodiment of the present invention, along the second direction, a clearance notch 124 is provided on the side of the second slot 12 away from the first slot 11. The clearance notch 124 communicates with the second opening 121. The output structure 50 includes an insertion section 53 and a connecting section 54 connected to each other. A fourth channel 51 is provided in the insertion section 53. The insertion section 53 can be inserted into the second slot 12 from the second opening 121. The connecting section 54 is located outside the second slot 12. The length of the clearance notch 124 is greater than or equal to the movement path of the connecting section 54. The connecting section 54 is used for electrical connection with an external device.
[0059] In this embodiment, the clearance notch 124 is provided to ensure that during the insertion of the output structure 50 into the second slot 12, the side wall of the second slot 12 away from the first slot 11 will not obstruct the movement of the connecting segment 54, thereby ensuring that the insertion segment 53 can be smoothly inserted into the second slot 12.
[0060] It should be noted that the upper part of the insertion segment 53 is used for the flow of current.
[0061] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the width of the opening of the second electrode ear through-hole 52 gradually increases in the direction away from the top of the fourth channel 51.
[0062] The above configuration facilitates the insertion of the tab 20 into the fourth channel 51, and also allows the tab 20 to exit the output structure 50.
[0063] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the connecting segment 54 includes a first segment 541 and a second segment 542 arranged at an angle. The first segment 541 is connected to the insertion segment 53. An insulating structure 544 is provided on the first segment 541. One end of the second segment 542 is connected to the first segment 541, and the other end of the second segment 542 is provided with a connecting hole 543.
[0064] In this embodiment, an insulating structure 544 is provided on the first segment 541 to ensure good electrical isolation between the connecting segment 54 and other electrical components of the battery module, preventing short circuits. A connecting hole 543 is provided at the other end of the second segment 542 for bolts to pass through. The battery output structure 50 serves as the total positive or total negative output of the battery module.
[0065] In one embodiment, the insulating structure 544 is a plastic part, which is sleeved on the first segment 541.
[0066] See also Figures 1 to 4As shown, in one embodiment of the present invention, the limiting structure 40 includes a third limiting member 43 extending along the second direction. The third limiting member 43 is connected to the top of the bracket 10. After the output structure 50 is inserted into the second slot 12, the third limiting member 43 can stop and limit the top of the output structure 50 in the first direction.
[0067] The above settings prevent the output structure 50 from falling out of the second slot 12.
[0068] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the limiting structure 40 further includes a fourth limiting member 44 extending along the second direction. The fourth limiting member 44 and the third limiting member 43 are arranged vertically at intervals on the same side of the second slot 12. The fourth limiting member 44 is located below the third limiting member 43. After the output structure 50 is inserted into the second slot 12, the fourth limiting member 44 can stop and limit the bottom of the output structure 50 in the first direction.
[0069] In this embodiment, the fourth limiting member 44 is located below the third limiting member 43. The two can respectively stop and limit the top and bottom of the output structure 50 in the first direction to prevent the output structure 50 from falling out of the second slot 12, thereby improving the overall structural stability of the electrical connection structure.
[0070] See also Figures 1 to 4 As shown, in one embodiment of the present invention, the bracket 10 includes a body 101 and a protruding edge and a plurality of spacers 103 disposed on the body 101. The protruding edge is disposed at the bottom of the body 101 and protrudes laterally toward the body 101. The plurality of spacers 103 are spaced apart along a second direction, and a first slot 11 is formed between two adjacent spacers 103.
[0071] In this embodiment, a protruding edge is provided at the bottom of the body 101 and protrudes laterally toward the body 101 to serve as the bottom wall of the first slot 11. The spacer portion 103 and the protruding edge are located on the same side of the body 101. Two adjacent spacer portions 103, the portion of the body 101 located between two adjacent spacer portions 103, and the portion of the protruding edge located between two adjacent spacer portions 103 together form a first slot 11.
[0072] In one embodiment, the limiting structure is a stop edge provided on the spacer 103. The stop edge protrudes laterally from the spacer 103 in the second direction. The stop edges on two adjacent spacers 103 cooperate to stop and limit the busbar in the first slot 11 in the first direction.
[0073] In one embodiment, the second limiting member 42 includes a first plate segment and a second plate segment that are perpendicular to each other. The first plate segment is disposed on one side of the body 101 and forms the bottom wall of the first slot 11. The second plate segment is parallel to the body 101 to form a stop limiting on the busbar 30 in a first direction.
[0074] In one embodiment, the first limiting member 41 and the third limiting member 43 are integral structures, the second limiting member 42 and the fourth limiting member 44 are integral structures, and the first limiting member 41, the second limiting member 42, the third limiting member 43 and the fourth limiting member 44 are integrally formed with the body 101.
[0075] See also Figures 1 to 4 As shown, in one embodiment of the present invention, each first slot 11 is provided with a busbar 30, and the first slot 11 is configured to be adapted to the busbar 30 inserted therein.
[0076] In this embodiment, the first slot 11 is configured to fit the busbar 30 inserted therein. The two adjacent spacers 103 can guide and limit the busbar 30, so that the busbar 30 can be quickly and accurately inserted into the first slot 11. Furthermore, during the process of inserting the busbar 30 into the first slot 11, it is not necessary to align the first tab through-hole 32 on the busbar 30 with the tab 20.
[0077] In one embodiment, the spacer 103 is made of an insulating material (such as plastic) to achieve electrical insulation between the busbars 30 in two adjacent first slots 11.
[0078] In one embodiment, the body 101 is further provided with a support plate and two spacers spaced apart along a second direction. The support plate is located at the bottom of the body 101 and protrudes laterally toward the body 101. The two spacers, the support plate, and the portion of the body 101 located between the two spacers together form a second slot 12.
[0079] In one embodiment, the spacer is made of an insulating material (such as plastic).
[0080] In one embodiment, the fourth limiting member 44 includes a third plate segment and a fourth plate segment perpendicular to each other. The third plate segment is disposed on one side of the body 101 and forms the bottom wall of the second slot 12. The fourth plate segment is parallel to the body 101 to form a stop limiting on the output structure 50 in a first direction.
[0081] See also Figures 1 to 4 As shown, in one embodiment of the present invention, at least two connecting posts 13 are provided on the side of the bracket 10 away from the first slot 11.
[0082] In this embodiment, the connecting post 13 is configured to be able to be inserted into the mounting hole 71 on the mounting end face of the battery cell to mount the bracket 10 onto the battery cell.
[0083] It should be noted that the mounting end face of the battery cell unit refers to the end face of the mounting bracket 10, and the tab 20 of the battery cell 60 is located on the mounting end face of the battery cell unit.
[0084] See also Figures 1 to 8 As shown, this utility model also provides a battery module, including: at least two electrical connection structures as described above; a cell unit, including a plurality of cells 60 arranged along a second direction, wherein along a first direction, the cell unit has a first side and a second side disposed opposite to each other, and each of the first side and the second side is provided with at least one electrical connection structure.
[0085] In this embodiment, the electrical connection structure has all the technical solutions and effects of the above-mentioned electrical connection structure, which will not be repeated here.
[0086] In one embodiment, there are multiple supports 10. At least two supports 10 are provided on both the first and second sides of the cell unit. At least two supports 10 located on the same side are arranged sequentially along the second direction. The arrangement of multiple supports 10 can improve the assembly efficiency of the solid-state battery module. The following is a detailed explanation: In the prior art, only one support 10 is usually provided on the first and second sides of the cell unit. When the support 10 is installed on the first side of the cell unit, all the tabs 20 of the cells 60 of the cell unit need to pass through the corresponding first channel. Since too many tabs 20 need to pass through at once, alignment is time-consuming, resulting in low assembly efficiency of the solid-state battery module. In this application, at least two supports 10 are provided on both the first and second sides of the cell unit. This reduces the number of tabs 20 that need to pass through at once when installing the support 10 on the mounting end face of the cell unit, reducing alignment difficulty and time. Therefore, it can improve the assembly efficiency of the solid-state battery module.
[0087] See also Figures 1 to 8 As shown, in one embodiment of this utility model, the battery module further includes two end plates 80, multiple binding straps 90, and multiple heat-conducting structures 70. Each heat-conducting structure 70 has a mounting cavity. The heat-conducting structure 70 and the battery cells 60 mounted within its mounting cavity form a structural unit (the number of battery cells 60 within the mounting cavity is at least one). The heat-conducting structure 70 is used to improve the structural strength and heat dissipation efficiency of the battery cells 60. Mounting holes 71 are provided on the heat-conducting structure 70. The tabs 20 of the battery cells 60 protrude from the mounting cavity of the heat-conducting structure 70, facilitating the series and parallel connection of the battery cells 60 into groups. Multiple structural units are arranged along a second direction to form a battery cell unit.
[0088] Along the second direction, the cell unit has a first end and a second end arranged opposite to each other. Two end plates 80 are respectively disposed at the first end and the second end of the cell unit. A binding strap 90 is wrapped around the outer periphery of the two end plates 80 and is used to provide pre-tightening force for the battery module. The tabs 20 of the cell 60 pass through the first channel 113 of the bracket 10, and then the busbar 30 and the output structure 50 are respectively inserted into the first slot 11 and the second slot 12, so that the busbar 30 contacts the bottom of the first slot 11, the output structure 50 contacts the bottom of the second slot 12, and the tabs 20 pass through the busbar 30 and the output structure 50 respectively. To prevent the busbar 30 from not contacting the bottom of the first slot 11, a tool can be used to press it from the top of the busbar 30.
[0089] It should be noted that the heat-conducting structure is made of metallic materials to achieve heat conduction.
[0090] This utility model also provides a battery pack, including: the electrical connection structure as described above or the battery module as described above.
[0091] In this embodiment, the electrical connection structure has all the technical solutions and effects of the above-mentioned electrical connection structure, which will not be repeated here. The battery module has all the technical solutions and effects of the above-mentioned electrical connection structure, which will not be repeated here.
[0092] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: the tab of the battery cell first exits from the first channel, and then the busbar can be inserted into the first slot from top to bottom through the first opening. During the process of the busbar entering the first slot, the tab can gradually enter the second channel from bottom to top through the first tab insertion opening (i.e., the tab exits from the busbar). When the busbar is inserted into the first slot, the limiting structure can stop and limit the busbar in the first direction to prevent the busbar from coming out of the first slot. After the tab exits from the second channel, the tab can be bent so that the tab fits with the busbar, and then the two are welded together. In this application, by inserting the busbar into the first slot from top to bottom, the tab can be gradually inserted into the second channel from bottom to top. When inserting into the first slot, it is only necessary to align the first tab insertion opening with the corresponding tab, which makes the tab exiting process simpler, shortens the welding time between the tab and the busbar, and improves the production efficiency of solid-state battery modules. In addition, after the busbar is inserted into the first slot, the limiting structure can stop and limit the busbar in the first direction to prevent the busbar from coming out of the first slot. There is no need to fix the busbar to the bracket with screws or other fixing structures, which can further simplify the welding steps of the tab and the busbar, thereby further improving the production efficiency of solid-state battery modules.
[0093] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0094] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0095] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An electrical connection structure, characterized in that, include: The bracket (10) includes a first slot (11) having a first opening (111) at the top, a first channel (113) being provided on a first sidewall (112) of the first slot (11), the first channel (113) penetrating the first sidewall (112) in a first direction, and the first channel (113) being configured to allow the tab (20) to pass through. A busbar (30) is provided with a second channel (31) extending vertically. The second channel (31) is configured to allow the tab (20) to pass through. One end of the second channel (31) passes through the bottom of the busbar (30) and forms a first tab penetration opening (32). The busbar (30) can be inserted into the first slot (11) from the first opening (111). After the busbar (30) is inserted into the first slot (11), the busbar (30) is arranged opposite to the first sidewall (112), and the first channel (113) is arranged correspondingly to the second channel (31). as well as A limiting structure (40) is provided on one side of the first slot (11) and is capable of stopping and limiting the busbar (30) located in the first slot (11) in the first direction.
2. The electrical connection structure according to claim 1, characterized in that, There are multiple first slots (11), and the multiple first slots (11) are arranged sequentially along the second direction. Each first slot (11) is provided with at least one busbar (30), and the busbars (30) located in different first slots (11) are mutually insulated.
3. The electrical connection structure according to claim 1, characterized in that, The width of the opening of the first electrode ear through-hole (32) gradually increases in the direction away from the top of the second channel (31).
4. The electrical connection structure according to any one of claims 1 to 3, characterized in that, The limiting structure (40) includes a first limiting member (41) extending in a second direction. The first limiting member (41) is connected to the top of the bracket (10). After the busbar (30) is inserted into the first slot (11), the first limiting member (41) can stop and limit the top of the busbar (30) in the first direction.
5. The electrical connection structure according to claim 4, characterized in that, The limiting structure (40) further includes a second limiting member (42) extending along the second direction. The first limiting member (41) and the second limiting member (42) are spaced apart along the vertical direction on the same side of the first slot (11). The second limiting member (42) is located below the first limiting member (41). After the busbar (30) is inserted into the first slot (11), the second limiting member (42) can stop and limit the bottom of the busbar (30) in the direction.
6. The electrical connection structure according to any one of claims 1 to 3, characterized in that, The bracket (10) further includes a second slot (12), and the electrical connection structure further includes an output structure (50). The second slot (12) is located at the first or last end of the bracket (10). The top of the second slot (12) has a second opening (121). A third channel (123) is provided on the second sidewall (122) of the second slot (12). The third channel (123) penetrates the second sidewall (122) along the first direction. A fourth channel (51) is provided on the output structure (50). One end of the fourth channel (51) penetrates the bottom of the output structure (50) and forms a second electrode tab. The opening (52), the third channel (123) and the fourth channel (51) are both configured to allow the tab (20) to pass through. Part of the output structure (50) can be inserted into the second slot (12) from the second opening (121). After the output structure (50) is inserted into the second slot (12), the output structure (50) is arranged opposite to the second sidewall (122). The third channel (123) is arranged corresponding to the fourth channel (51). The limiting structure (40) can stop and limit the output structure (50) located in the second slot (12) in a direction perpendicular to the first direction.
7. The electrical connection structure according to claim 6, characterized in that, Along the second direction, the second slot (12) is provided with a clearance notch (124) on the side away from the first slot (11), the clearance notch (124) is connected to the second opening (121), the output structure (50) includes an insertion section (53) and a connecting section (54) connected to each other, the fourth channel (51) is disposed in the insertion section (53), the insertion section (53) can be inserted into the second slot (12) from the second opening (121), the connecting section (54) is located outside the second slot (12), the length of the clearance notch (124) is greater than or equal to the movement path of the connecting section (54), the connecting section (54) is used for electrical connection with an external device; and / or, the width of the opening of the second electrode through-hole (52) gradually increases along the direction away from the top of the fourth channel (51).
8. The electrical connection structure according to claim 7, characterized in that, The connecting segment (54) includes a first segment (541) and a second segment (542) arranged at an angle. The first segment (541) is connected to the insertion segment (53). An insulating structure (544) is provided on the first segment (541). One end of the second segment (542) is connected to the first segment (541), and the other end of the second segment (542) is provided with a connecting hole (543).
9. The electrical connection structure according to claim 6, characterized in that, The limiting structure (40) includes a third limiting member (43) extending along a second direction. The third limiting member (43) is connected to the top of the bracket (10). After the output structure (50) is inserted into the second slot (12), the third limiting member (43) can stop and limit the top of the output structure (50) in the first direction.
10. The electrical connection structure according to claim 9, characterized in that, The limiting structure (40) further includes a fourth limiting member (44) extending along the second direction. The fourth limiting member (44) and the third limiting member (43) are spaced apart along the vertical direction on the same side of the second slot (12). The fourth limiting member (44) is located below the third limiting member (43). After the output structure (50) is inserted into the second slot (12), the fourth limiting member (44) can stop and limit the bottom of the output structure (50) in the first direction.
11. The electrical connection structure according to claim 2 or 3, characterized in that, The bracket (10) includes a body (101) and a protruding edge and a plurality of spacers (103) disposed on the body (101). The protruding edge is disposed at the bottom of the body (101) and protrudes laterally toward the body (101). The plurality of spacers (103) are spaced apart along a second direction, and a first slot (11) is formed between two adjacent spacers (103).
12. The electrical connection structure according to claim 11, characterized in that, Each of the first slots (11) is provided with a bus (30), and the first slot (11) is configured to be adapted to the bus (30) inserted therein.
13. The electrical connection structure according to any one of claims 1 to 3, characterized in that, The bracket (10) has at least two connecting posts (13) on the side opposite to the first slot (11).
14. A battery module, characterized in that, include: At least two electrical connection structures as described in any one of claims 1 to 13; The battery cell unit includes a plurality of battery cells (60) arranged along a second direction. Along the first direction, the battery cell unit has a first side and a second side disposed opposite to each other, and at least one of the electrical connection structures is provided on both the first side and the second side.
15. A battery pack, characterized in that, include: The electrical connection structure as described in any one of claims 1 to 13 or the battery module as described in claim 14.