Single cell and battery pack

Abstract

The utility model provides a kind of single battery and battery pack.Single battery includes: top cover subassembly, top cover subassembly includes top cover sheet, first pole and second pole, first pole and second pole are all worn in top cover sheet, at least one of first pole and second pole is insulated with top cover sheet;Collection component, collection component includes collection board, first collection ring and second collection ring, collection board is located in top cover sheet, first collection ring and second collection ring are electrically connected with collection board, and first collection ring is sleeved on the outer periphery of first pole and is electrically connected, second collection ring is sleeved on the outer periphery of second pole and is electrically connected.First collection ring, second collection ring are directly sleeved on the outer periphery of pole, and form large-area conductive contact with the surface of pole, and the voltage signal of pole can be more directly and stably acquired.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a single battery cell and a battery pack. Background Technology

[0002] Individual battery cells are typically connected to a BMS (Battery Management System) externally to monitor battery status and other information. A BMS is a device that works in conjunction with the battery status monitoring system to intelligently manage and maintain each battery cell, prevent overcharging and over-discharging, extend battery life, and monitor battery condition.

[0003] Traditional BMS systems are typically wired connections. The cabling not only increases weight but also makes the cabling prone to unstable contact or breakage due to vibration, impact, or other environmental factors, leading to signal acquisition interruptions and signal instability. Utility Model Content

[0004] This utility model provides a single battery and battery pack to solve the problems of unstable connection and unstable signal of traditional acquisition boards.

[0005] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0006] In a first aspect, this utility model provides a single-cell battery, comprising:

[0007] A top cover assembly, the top cover assembly including a top cover sheet, a first pole and a second pole, the first pole and the second pole both passing through the top cover sheet, and at least one of the first pole and the second pole being insulated from the top cover sheet;

[0008] The acquisition component includes an acquisition plate, a first acquisition ring, and a second acquisition ring. The acquisition plate is disposed on the top cover plate. The first acquisition ring and the second acquisition ring are both electrically connected to the acquisition plate. The first acquisition ring is sleeved on the outer periphery of the first electrode post and electrically connected, and the second acquisition ring is sleeved on the outer periphery of the second electrode post and electrically connected.

[0009] Optionally, the single cell has a first direction, the first electrode has a first end face in the first direction, the second electrode has a second end face in the first direction, and the first end face and the second end face are both located on the same side of the top cover sheet in the first direction.

[0010] The first electrode post is provided with a first annular groove, the first annular groove is provided on the first end face, and at least a portion of the first acquisition ring is provided in the first annular groove and is electrically connected to the groove wall of the first annular groove.

[0011] The second pole post is provided with a second annular groove, which is located on the second end face. At least a portion of the second acquisition ring is located in the second annular groove and is electrically connected to the groove wall of the second annular groove.

[0012] Optionally, the acquisition component further includes a first connecting line and a second connecting line, wherein the first connecting line connects the first acquisition ring and the acquisition board, and the second connecting line connects the second acquisition ring and the acquisition board;

[0013] The first pole post also has a first circumferential surface, which is connected to the first end face. The first annular groove is located at the connection between the first circumferential surface and the first end face, and the first connecting line is connected to the outer circumferential wall of the first acquisition ring.

[0014] The second pole also has a second circumferential surface, which is connected to the second end face. The second annular groove is located at the connection between the second circumferential surface and the second end face, and the second connecting line is connected to the outer circumferential wall of the second acquisition ring.

[0015] Optionally, the top cover assembly further includes a first welding ring and a second welding ring; the first welding ring is welded to the first circumferential surface and electrically connected to the first electrode post, and a portion of the first acquisition ring is electrically connected to the first welding ring; the second welding ring is welded to the second circumferential surface and electrically connected to the second electrode post, and a portion of the second acquisition ring is electrically connected to the second welding ring.

[0016] Optionally, the top cover assembly further includes a first upper plastic and a second upper plastic;

[0017] The first upper plastic sleeve is disposed on the outer periphery of the first pole post, and the first welding ring is also connected to the side of the first upper plastic sleeve away from the top cover plate. The first ring groove has a first bottom wall in the first direction, and the first welding ring has a first side wall away from the first upper plastic sleeve in the first direction. The first side wall and the first bottom wall are flush in the first direction.

[0018] The second upper plastic sleeve is disposed on the outer periphery of the second pole post, and the second welding ring is also connected to the side of the second upper plastic sleeve away from the top cover plate. The second ring groove has a second bottom wall in the first direction, and the second welding ring has a second side wall away from the second upper plastic sleeve in the first direction. The second side wall and the second bottom wall are flush in the first direction.

[0019] Optionally, the top cover assembly further includes a top cover patch, which is attached to the top cover sheet in the first direction; the top cover patch has a first window, a second window and a third window, the first electrode post passes through the first window, the second electrode post passes through the second window, and at least a portion of the acquisition board is exposed in the third window.

[0020] Optionally, the top cover patch is provided with a first groove and a second groove, the first groove connecting the first opening and the third opening, the second groove connecting the second opening and the third opening, and the openings of the first groove and the second groove both facing the top cover patch in the first direction; at least a portion of the first connecting wire is accommodated in the first groove, and at least a portion of the second connecting wire is accommodated in the second groove.

[0021] Optionally, the acquisition board includes a base plate, a data processing module, and a wireless transceiver module. The base plate is fixed to the top cover plate. The data processing module and the wireless transceiver module are electrically connected and both are disposed on the base plate. The first acquisition ring and the second acquisition ring are both electrically connected to the data processing module.

[0022] Optionally, the single cell also includes;

[0023] A housing having a receiving cavity, wherein a top cover is connected to the housing and seals the receiving cavity;

[0024] An electrode assembly is disposed in the receiving cavity. The electrode assembly has a first tab and a second tab, the first tab being electrically connected to a first electrode post, and the second tab being electrically connected to a second electrode post.

[0025] Secondly, this utility model also provides a battery pack, including a single battery cell as described in any of the above claims.

[0026] In the aforementioned single battery cell and battery pack, the first acquisition ring is sleeved around the outer periphery of the first electrode post, forming a ring-shaped conductive contact with the first electrode post. The second acquisition ring is sleeved around the outer periphery of the second electrode post, forming a ring-shaped conductive contact with the second electrode post. Compared with the traditional point-to-point connection method, the ring connection has a larger contact area and lower impedance. Furthermore, the ring sleeve can prevent the cable from being easily broken due to point connection when the single battery cell encounters vibration, collision, or other situations, and reduce signal fluctuations caused by poor contact. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a top cover assembly and a data acquisition assembly provided in the embodiment;

[0028] Figure 2 This is a top view of the top cover assembly and the acquisition assembly in the embodiment;

[0029] Figure 3 yes Figure 2 Exploded view of the top cover assembly and the acquisition assembly;

[0030] Figure 4 yes Figure 1 Enlarged view of point I in the embodiment;

[0031] Figure 5 This is a cross-sectional view of the first pole and the first acquisition ring in the embodiment;

[0032] Figure 6 yes Figure 5 A cross-sectional view excluding the first acquisition ring and the first connecting line;

[0033] Figure 7 This is another schematic diagram of the top cover assembly and the acquisition assembly in the embodiment;

[0034] Figure 8 yes Figure 7 An exploded view of the top cover assembly and the acquisition assembly shown in the figure;

[0035] Figure 9 yes Figure 7 Enlarged view at point II;

[0036] Figure 10 yes Figure 7 Cross-sectional view of AA in the middle;

[0037] Figure 11 yes Figure 10 Enlarged view of section III;

[0038] Figure 12 This is a schematic diagram of the top cover patch in the embodiment;

[0039] Figure 13 This is a schematic diagram of a single cell in one of the embodiments;

[0040] Figure 14 yes Figure 13 Exploded view of a single cell.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Top cover assembly; 11. Top cover piece; 12. First pole post; 121. First end face; 122. First annular groove; 1221. First bottom wall; 123. First circumferential surface; 13. Second pole post; 131. Second end face; 132. Second annular groove; 1321. Second bottom wall; 133. Second circumferential surface; 14. First welding ring; 141. First side wall; 15. Second welding ring; 151. Second side wall; 16. First upper plastic; 17. Second upper plastic; 18. Top cover patch; 181. First window; 182. Second window; 183. Third window; 184. First cable tray; 185. Second cable tray; 2. Acquisition component; 21. Acquisition board; 211. Substrate; 212. Data processing module; 213. Wireless transceiver module; 22. First acquisition ring; 23. Second acquisition ring; 24. First connecting line; 25. Second connecting line; Z, First direction. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0044] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and" and "or" indicate at least one of the connected objects, and the comma "," generally indicates that the preceding and following objects are in an "or" relationship.

[0045] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0046] This utility model embodiment provides a single-cell battery, see reference. Figures 1 to 11 The single battery cell includes a top cover assembly 1 and a data acquisition assembly. Wherein:

[0047] like Figure 1 , Figure 2 , Figure 13 and Figure 14As shown, the top cover assembly 1 includes a top cover plate 11, a first pole 12 and a second pole 13. The first pole 12 and the second pole 13 are both inserted through the top cover plate 11, and at least one of the first pole 12 and the second pole 13 is insulated from the top cover plate 11.

[0048] The first terminal 12 and the second terminal 13 can both be insulated from the top cover plate 11, or one of them can be insulated from the top cover plate 11 while the other is not, to ensure that the first terminal 12 and the second terminal 13 will not be simultaneously connected to the top cover plate 11 and cause a short circuit.

[0049] like Figures 1 to 3 As shown, the acquisition component 2 includes an acquisition plate 21, a first acquisition ring 22, and a second acquisition ring 23. The acquisition plate 21 is disposed on the top cover plate 11. The first acquisition ring 22 and the second acquisition ring 23 are both electrically connected to the acquisition plate 21. The first acquisition ring 22 is sleeved on the outer periphery of the first pole post 12 and electrically connected. The second acquisition ring 23 is sleeved on the outer periphery of the second pole post 13 and electrically connected.

[0050] like Figure 4 and Figure 5 As shown, the first acquisition ring 23 is sleeved on the outer periphery of the first electrode post 12, and the first acquisition ring 23 can be made conductive to the first electrode post 12 by welding. To facilitate welding, the welding area between the first electrode post and the acquisition plate 23 can be tin-plated.

[0051] The acquisition board 21 processes the signals acquired by the first acquisition ring 22 and the second acquisition ring 23 to monitor the current, voltage, and other parameters of a single battery cell. Simultaneously, the first acquisition ring 22 and the second acquisition ring 23 provide power to the acquisition board 21. The first acquisition ring 22 and the second acquisition ring 23 are fitted around the outer periphery of the electrode post and are tightly attached to the surface of the electrode post through physical contact or conductive connection, enabling real-time acquisition of signals such as current and voltage.

[0052] The first acquisition ring 22 and the second acquisition ring 23 are sleeved on the outer periphery of the electrode post, forming a ring-shaped conductive contact with the electrode post surface. Compared with the traditional point-to-point wire connection method, the ring-shaped contact area is larger and the impedance is lower, which can acquire the electrode post voltage signal in real time and accurately, and reduce signal fluctuations caused by poor contact. At least one of the first electrode post 12 and the second electrode post 13 is insulated from the top cover plate 11 to prevent the electrode post from directly contacting the metal top cover plate and causing a short circuit. This is especially suitable for high-voltage battery systems, reducing the risk of electric shock and the hidden danger of leakage in the casing.

[0053] In one embodiment, such as Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, where, Figure 6 yes Figure 5A cross-sectional view of the structure without the first acquisition ring 22 shows that the single cell has a first direction Z, the first electrode 12 has a first end face 121 in the first direction Z, and the second electrode 13 has a second end face 131 in the first direction Z. The first end face 121 and the second end face 131 are both located on the same side of the top cover plate 11 in the first direction Z. The first electrode 12 is provided with a first annular groove 122, which is located on the first end face 121. At least a portion of the first acquisition ring 22 is located in the first annular groove 122 and is electrically connected to the groove wall of the first annular groove 122. The second electrode 13 is provided with a second annular groove 132, which is located on the second end face 131. At least a portion of the second acquisition ring 23 is located in the second annular groove 132 and is electrically connected to the groove wall of the second annular groove 132.

[0054] The first end face 121 and the second end face 131 are both located on the same side of the top cover plate 11 in the first direction Z, indicating that the poles are led out from the same side of the top cover plate, forming a double pole layout on the same side, which facilitates the connection of external circuits on the same side and simplifies the wiring design of the battery module.

[0055] The first annular groove 122 and the second annular groove 132 are formed on the end face of the electrode post to accommodate the acquisition ring. The inner wall of the annular groove is in direct contact with the acquisition ring to form a surface contact conductive structure. The depth and width of the annular groove can be precisely designed according to the size of the acquisition ring to ensure a tight fit between the two.

[0056] The first acquisition ring 22 and the second acquisition ring 23 are at least partially embedded in their corresponding ring grooves, and are electrically connected to the groove wall, i.e., the electrode body, forming an embedded conductive connection. After the acquisition rings are embedded in the ring grooves, they are confined to a fixed area on the end face of the electrode, preventing displacement or detachment due to vibration or assembly errors, thus ensuring the stability of signal acquisition during long-term use. Each electrode's acquisition ring is independently embedded in its ring groove, allowing for individual replacement of damaged acquisition components without disassembling the entire battery top cover or damaging the battery's sealing structure, thereby reducing maintenance costs.

[0057] In one embodiment, such as Figures 1 to 6 , Figure 11 As shown, the acquisition component 2 also includes a first connecting line 24 and a second connecting line 25. The first connecting line 24 connects the first acquisition ring 22 and the acquisition plate 21, and the second connecting line 25 connects the second acquisition ring 23 and the acquisition plate 21. The first pole post 12 also has a first circumferential surface 123, which is connected to the first end face 121. A first annular groove 122 is provided at the connection between the first circumferential surface 123 and the first end face 121. The first connecting line 24 is connected to the outer circumferential wall of the first acquisition ring 22. The second pole post 13 also has a second circumferential surface 133, which is connected to the second end face 131. A second annular groove 132 is provided at the connection between the second circumferential surface 133 and the second end face 131. The second connecting line 25 is connected to the outer circumferential wall of the second acquisition ring 23.

[0058] like Figures 1 to 3 As shown, the first connecting line 24 connects the first acquisition ring 22 and the acquisition board 21, and is connected to the outer peripheral wall of the first acquisition ring 22, transmitting the electrical signal obtained by the first acquisition ring 22 from the first pole 12 to the acquisition board 21, thus realizing signal transmission. The second connecting line 25 connects the second acquisition ring 23 and the acquisition board 21, and is connected to the outer peripheral wall of the second acquisition ring 23, transmitting the electrical signal obtained by the second acquisition ring 23 from the second pole 13 to the acquisition board 21, thus completing the aggregation of the bipolar signals.

[0059] like Figures 4 to 6 As shown, in the first electrode post 12, the first circumferential surface 123, i.e., the side surface of the electrode post in the circumferential direction, is connected to the first end face 121 to form the outer surface of the post. The first annular groove 122 is located at the connection between the first circumferential surface 123 and the first end face 121. The first acquisition ring 22 is embedded in the first annular groove 122 and is electrically connected to the electrode post through the groove wall to ensure contact area and stability.

[0060] like Figure 11 As shown, in the second pole post 13, the second circumferential surface 133, i.e., the side surface of the pole post, is connected to the second end face 131, and the second annular groove 132 is located at the connection between the second circumferential surface 133 and the second end face 131. The second acquisition ring 23 is embedded in the second annular groove 132 and is electrically connected to the pole post through the groove wall to achieve reliable signal acquisition.

[0061] The first and second acquisition rings are embedded in the annular grooves on the top edge of the electrode post. They contact the electrode post through the circumferential and end walls of the grooves, providing a larger contact area compared to simply fitting around the electrode post. This also reduces the likelihood of loosening due to vibration or assembly errors, ensuring the stability of the electrical connection. The connecting wires are attached to the outer circumferential wall of the acquisition rings, rather than the top or bottom, preventing interference between the connecting wires and other components on the top surface of the electrode post. This also results in a more organized wiring harness layout and reduces interference during signal transmission.

[0062] The groove provides mechanical positioning for the acquisition ring. During assembly, the acquisition ring is simply inserted into the groove to achieve electrical connection and physical fixation, simplifying the assembly process and improving production efficiency.

[0063] In one embodiment, such as Figures 4 to 6 , Figure 8 and Figure 11 As shown, the top cover assembly 1 also includes a first welding ring 14 and a second welding ring 15; the first welding ring 14 is welded to the first circumferential surface 123 and electrically connected to the first pole post 12, and a portion of the first acquisition ring 22 is electrically connected to the first welding ring 14; the second welding ring 15 is welded to the second circumferential surface 133 and electrically connected to the second pole post 13, and a portion of the second acquisition ring 23 is electrically connected to the second welding ring 15.

[0064] The first welding ring 14 is welded to the first circumferential surface 123 of the first pole post 12 to expand the space of the first annular groove 122, allowing more space for the first acquisition ring 22 to be installed and increasing its width. Furthermore, the first welding ring 14 can be welded not only to the groove wall of the first annular groove 122 but also to itself, improving the welding area, the reliability of the electrical connection, and the stability of current transmission, while reducing internal resistance. The second welding ring 15 is welded to the second circumferential surface 133 of the second pole post 13 in the same manner, and will not be described further.

[0065] like Figures 4 to 6 As shown, the first welding ring 14 is welded to the first circumferential surface 123 of the first electrode post 12, and can be directly electrically connected to the first electrode post 12. Serving as a transitional conductive component between the first electrode post 12 and the first acquisition ring 22, the welding process ensures a reliable connection with the electrode post, avoiding the reduction in structural strength caused by directly slotting or drilling holes in the electrode post. It provides a welding or crimping interface for the first acquisition ring 22, facilitating electrical connection between the acquisition ring and the electrode post, while also optimizing the contact area and conductivity.

[0066] like Figure 11 As shown, the second welding ring 15 can be welded to the second circumferential surface 133 of the second pole post 13 and directly electrically connected to the second pole post 13. It serves as a conductive intermediate between the second pole post 13 and the second acquisition ring 23, and the welding enhances the reliability of the connection.

[0067] In one embodiment, such as Figure 8 , Figure 9 and Figure 11 As shown, the top cover assembly 1 also includes a first upper plastic 16 and a second upper plastic 17; the first upper plastic 16 is sleeved on the outer periphery of the first pole post 12, and the first welding ring 14 is also connected to the side of the first upper plastic 16 away from the top cover piece 11. The first annular groove 122 has a first bottom wall 1221 in the first direction Z, and the first welding ring 14 has a first side wall 141 in the first direction Z away from the first upper plastic 16. The first side wall 141 is flush with the first bottom wall 1221 in the first direction Z; the second upper plastic 17 is sleeved on the outer periphery of the second pole post 13, and the second welding ring 15 is also connected to the side of the second upper plastic 17 away from the top cover piece 11. The second annular groove 132 has a second bottom wall 1321 in the first direction Z, and the second welding ring 15 has a second side wall 151 in the first direction Z away from the second upper plastic 17. The second side wall 151 is flush with the second bottom wall 1321 in the first direction Z.

[0068] like Figure 8 As shown, the first upper plastic 16 and the second upper plastic 17 are insulating plastic parts sleeved on the outer periphery of the corresponding pole posts. Figure 9 , Figure 11As shown, the first bottom wall 1221 and the second bottom wall 1321 are the bottom planes of the corresponding annular grooves, which are flush with the top surface of the welding ring (first side wall 141 and second side wall 151) on the horizontal plane. This ensures that the acquisition ring fits better with the bottom wall of the corresponding annular groove and the top surface of the welding ring, and prevents poor welding conditions such as incomplete welding caused by unevenness.

[0069] The upper plastic part can achieve the insulation between the corresponding pole and the top cover plate 11 and support the corresponding welding ring, reducing the number of parts and simplifying the assembly process.

[0070] It should be noted that the welding ring can be a single ring structure or multiple separate structures spaced apart circumferentially. This embodiment does not impose any specific limitations.

[0071] In one embodiment, such as Figure 3 , Figure 8 , Figure 12 and Figure 14 As shown. The top cover assembly 1 also includes a top cover patch 18, which is attached to the top cover piece 11 in the first direction Z; the top cover patch 18 is provided with a first window 181, a second window 182 and a third window 183, a first pole post 12 passes through the first window 181, a second pole post 13 passes through the second window 182, and at least a portion of the acquisition board 21 is exposed in the third window 183.

[0072] The top cover patch 18 is attached to the surface of the top cover plate 11 in the first direction Z and has three openings. The first opening 181 and the second opening 182 allow the first pole post 12 and the second pole post 13 to pass through, so as to achieve mechanical fixation and insulation isolation between the pole post and the top cover plate. The third opening 183 exposes part of the acquisition board 21, which is convenient for external circuit connection or signal acquisition.

[0073] The top cover patch 18, acting as a cover layer, protects the electrical components on the surface of the top cover plate 11 from external impacts, dust, or liquid intrusion, improving battery reliability in complex environments. The first window 181 and the second window 182 provide an installation reference for the terminals, ensuring their positional accuracy on the top cover plate 11. This facilitates subsequent assembly of components such as the acquisition ring and welding ring, reducing contact problems caused by assembly errors. As an independent component, the top cover patch 18 can be pre-attached to the top cover plate 11 to form a standardized top cover assembly, simplifying the battery assembly process and improving production efficiency.

[0074] The top cover patch 18 achieves multiple functions through its window structure, including terminal positioning, electrical isolation, and exposure of the acquisition board. Combined with the previously designed acquisition ring, welding ring, and plastic components, it forms a complete electrical connection and protection system. This design not only improves the assembly accuracy of individual cells and the reliability of signal acquisition but also enhances battery safety and environmental adaptability through insulation protection and structural optimization.

[0075] In one embodiment, such as Figure 3 , Figure 8 , Figure 12 and Figure 14 As shown. The top cover patch 18 is provided with a first groove 184 and a second groove 185. The first groove 184 connects the first opening 181 and the third opening 183, and the second groove 185 connects the second opening 182 and the third opening 183. The openings of the first groove 184 and the second groove 185 both face the top cover 11 in the first direction Z. At least a portion of the first connecting line 24 is accommodated in the first groove 184, and at least a portion of the second connecting line 25 is accommodated in the second groove 185.

[0076] like Figure 12 As shown, one end of the first wire groove 184 is connected to the first opening 181 and the other end is connected to the third opening 183, which is used to accommodate the first connecting wire 24; one end of the second wire groove 185 is connected to the second opening 182 and the other end is connected to the third opening 183, which is used to accommodate the second connecting wire 25.

[0077] The first connecting wire 24 and the second connecting wire 25 are embedded in the wire groove to avoid direct exposure to the external environment, thus preventing problems such as wire breakage or insulation damage caused by vibration, friction or external force pulling, and improving connection reliability.

[0078] The cable trays provide a pre-defined path for the connecting wires. During assembly, simply insert the connecting wires into the trays to complete the positioning, eliminating the need for additional fixing devices. This simplifies assembly steps, shortens production time, and is especially suitable for automated production lines. The standardized cable tray design ensures that the connecting wires of each battery follow the same path, avoiding problems such as wire crossing and tangling caused by differences in operation during manual wiring, thus improving product consistency and yield.

[0079] The connecting wires are concealed within the interlayer between the top cover patch and the top cover plate, eliminating the need for additional wiring space on the top of the battery and resulting in a more compact overall structure. The fixed wiring channel routing makes the connecting wire paths clearly visible, facilitating quick fault location during battery testing or repair and reducing troubleshooting time. If it is necessary to replace the connecting wires or data acquisition components, simply removing the top cover patch exposes the wiring within the channel, without needing to disassemble the entire battery top cover, thus reducing maintenance complexity.

[0080] In one embodiment, such as Figures 1 to 3 , Figure 8 , Figure 9 As shown. The acquisition board 21 includes a base plate 211, a data processing module 212 and a wireless transceiver module 213. The base plate 211 is fixed to the top cover plate 11. The data processing module 212 and the wireless transceiver module 213 are electrically connected and are both disposed on the base plate 211. The first acquisition ring 22 and the second acquisition ring 23 are both electrically connected to the data processing module 212.

[0081] like Figure 8 As shown, the substrate 211 serves as the physical carrier of the acquisition board 21, used to fix electronic components such as the data processing module 212 and the wireless transceiver module 213, and provides a basic plane for electrical connections. It is directly fixed to the top cover 11 to ensure stable positioning and facilitate connection to the electrode acquisition rings via connecting wires. The data processing module 212 receives electrical signals transmitted from the first acquisition ring 22 and the second acquisition ring 23, performs preliminary data calculations or logical judgments, and provides effective information for subsequent wireless transmission. The wireless transceiver module 213 can receive instructions from external devices and feed them back to the data processing module 212 to execute corresponding operations.

[0082] The electrical signal (such as voltage) at the terminal is directly acquired by the first acquisition ring 22 and the second acquisition ring 23. Combined with the preprocessing capability of the data processing module 212, the key parameters of the single battery can be monitored in real time, avoiding data lag or distortion caused by wire harness aging or poor contact in traditional wired transmission schemes.

[0083] The data processing module 212 can directly identify abnormal data at the individual battery level. Maintenance personnel can directly read the data of the individual battery through a wireless terminal without disassembling the battery module. It is especially suitable for rapid repair of enclosed battery packs or high-voltage environments, reducing maintenance costs and safety risks.

[0084] The acquisition board 21 is fixed to the top cover plate 11 as an independent module, which is compatible with different specifications of single cells. Only the size of the substrate 211 and the position of the acquisition ring need to be adjusted, without redesigning the internal structure of the battery, thus shortening the R&D cycle.

[0085] In one embodiment, the single battery cell further includes: a housing having a receiving cavity, a top cover 11 connected to the housing and covering the receiving cavity; and an electrode assembly disposed in the receiving cavity, the electrode assembly having a first tab and a second tab, the first tab being electrically connected to a first terminal 12, and the second tab being electrically connected to a second terminal 13.

[0086] The electrode assembly is placed directly inside the housing cavity, and the tabs are connected to the terminals on the top cover plate nearby, which shortens the current conduction path, reduces redundant structures, and makes efficient use of the internal space of the battery, which helps to improve the energy density of the single cell.

[0087] As a unified interface for external electrical connection, the terminal post facilitates the connection of multiple individual cells in series and parallel to form a battery module or battery pack, meeting the voltage and capacity requirements of different application scenarios and improving system integration efficiency.

[0088] The welding area between the tab and the terminal post is wrapped with insulating components to prevent contact with other components; the sealed structure of the shell and top cover prevents the electrolyte from contacting external metals, reducing the risk of short circuits. The enclosed shell provides a standardized external interface for subsequent thermal management design, facilitating the rapid dissipation of heat generated by the electrode assembly through the shell, maintaining the uniformity of the battery's operating temperature, and preventing thermal runaway.

[0089] The electrode assembly is installed into the housing as an independent prefabricated unit. The sealing of the top cover plate with the housing and the welding of the electrode tabs with the electrode posts can be completed by automated equipment, reducing manual intervention, improving production efficiency and product consistency, and reducing production costs.

[0090] This application also discloses a battery pack, which includes the single battery cells described in the foregoing embodiments.

[0091] Assembling the aforementioned individual cells into a battery pack leverages the advantages of individual cells, such as reliable electrical connection, high sealing, high energy density, and structural stability, to enable the battery pack to achieve efficient and stable power transmission, strong environmental protection, high energy density, and suitability for large-scale applications.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A single-cell battery, characterized in that, include: Top cover assembly (1), the top cover assembly (1) includes a top cover plate (11), a first pole (12) and a second pole (13), the first pole (12) and the second pole (13) are both disposed through the top cover plate (11), and at least one of the first pole (12) and the second pole (13) is insulated from the top cover plate (11); The acquisition component (2) includes an acquisition plate (21), a first acquisition ring (22) and a second acquisition ring (23). The acquisition plate (21) is disposed on the top cover plate (11). The first acquisition ring (22) and the second acquisition ring (23) are both electrically connected to the acquisition plate (21). The first acquisition ring (22) is sleeved on the outer periphery of the first pole post (12) and electrically connected. The second acquisition ring (23) is sleeved on the outer periphery of the second pole post (13) and electrically connected.

2. The single-cell battery according to claim 1, characterized in that, The single cell has a first direction (Z), the first terminal post (12) has a first end face (121) in the first direction (Z), the second terminal post (13) has a second end face (131) in the first direction (Z), and the first end face (121) and the second end face (131) are both located on the same side of the top cover plate (11) in the first direction (Z); The first pole post (12) is provided with a first annular groove (122), the first annular groove (122) is provided on the first end face (121), and at least a portion of the first collection ring (22) is provided in the first annular groove (122) and is electrically connected to the groove wall of the first annular groove (122). The second pole post (13) is provided with a second annular groove (132), the second annular groove (132) is provided on the second end face (131), and at least a portion of the second acquisition ring (23) is provided in the second annular groove (132) and electrically connected to the groove wall of the second annular groove (132).

3. The single-cell battery according to claim 2, characterized in that, The acquisition component (2) further includes a first connecting line (24) and a second connecting line (25), wherein the first connecting line (24) connects the first acquisition ring (22) and the acquisition board (21), and the second connecting line (25) connects the second acquisition ring (23) and the acquisition board (21); The first pole post (12) also has a first peripheral surface (123), the first peripheral surface (123) is connected to the first end face (121), the first annular groove (122) is provided at the connection between the first peripheral surface (123) and the first end face (121), and the first connecting line (24) is connected to the outer peripheral wall of the first acquisition ring (22); The second pole post (13) also has a second peripheral surface (133), which is connected to the second end face (131). The second annular groove (132) is located at the connection between the second peripheral surface (133) and the second end face (131). The second connecting line (25) is connected to the outer peripheral wall of the second acquisition ring (23).

4. The single-cell battery according to claim 3, characterized in that, The top cover assembly (1) further includes a first welding ring (14) and a second welding ring (15); the first welding ring (14) is welded to the first peripheral surface (123) and electrically connected to the first pole post (12), and a portion of the first acquisition ring (22) is electrically connected to the first welding ring (14); the second welding ring (15) is welded to the second peripheral surface (133) and electrically connected to the second pole post (13), and a portion of the second acquisition ring (23) is electrically connected to the second welding ring (15).

5. The single-cell battery according to claim 4, characterized in that, The top cover assembly (1) also includes a first upper plastic (16) and a second upper plastic (17); The first upper plastic (16) is sleeved on the outer periphery of the first pole post (12), and the first welding ring (14) is also connected to the side of the first upper plastic (16) away from the top cover plate (11). The first ring groove (122) has a first bottom wall (1221) in the first direction (Z), and the first welding ring (14) has a first side wall (141) away from the first upper plastic (16) in the first direction (Z). The first side wall (141) and the first bottom wall (1221) are flush in the first direction (Z). The second upper plastic (17) is sleeved on the outer periphery of the second pole post (13), and the second welding ring (15) is also connected to the side of the second upper plastic (17) away from the top cover plate (11). The second ring groove (132) has a second bottom wall (1321) in the first direction (Z), and the second welding ring (15) has a second side wall (151) away from the second upper plastic (17) in the first direction (Z). The second side wall (151) and the second bottom wall (1321) are flush in the first direction (Z).

6. The single-cell battery according to claim 3, characterized in that, The top cover assembly (1) further includes a top cover patch (18), which is attached to the top cover piece (11) in the first direction (Z); the top cover patch (18) is provided with a first window (181), a second window (182) and a third window (183), the first pole post (12) passes through the first window (181), the second pole post (13) passes through the second window (182), and at least a portion of the acquisition board (21) is exposed in the third window (183).

7. The single-cell battery according to claim 6, characterized in that, The top cover patch (18) is provided with a first groove (184) and a second groove (185). The first groove (184) connects the first opening (181) and the third opening (183), and the second groove (185) connects the second opening (182) and the third opening (183). The openings of the first groove (184) and the second groove (185) are both oriented towards the top cover patch (11) in the first direction (Z). At least a portion of the first connecting line (24) is accommodated in the first groove (184), and at least a portion of the second connecting line (25) is accommodated in the second groove (185).

8. The single-cell battery according to any one of claims 1-7, characterized in that, The acquisition board (21) includes a base plate (211), a data processing module (212), and a wireless transceiver module (213). The base plate (211) is fixed to the top cover plate (11). The data processing module (212) and the wireless transceiver module (213) are electrically connected and are both disposed on the base plate (211). The first acquisition ring (22) and the second acquisition ring (23) are both electrically connected to the data processing module (212).

9. The single-cell battery according to claim 8, characterized in that, The single-cell battery also includes; A housing having a receiving cavity, wherein the top cover (11) is connected to the housing and covers the receiving cavity; An electrode assembly is disposed in the receiving cavity. The electrode assembly has a first tab and a second tab. The first tab is electrically connected to the first pole post (12), and the second tab is electrically connected to the second pole post (13).

10. A battery pack, characterized in that, Includes the single-cell battery as described in any one of claims 1-9 above.

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