Single cell and battery pack

Abstract

The utility model discloses a single battery and battery pack, the electric core of single battery is located in the accommodation cavity of casing, the top cover is sealed in the casing to close the accommodation cavity, the pole post subassembly includes pole post main part, nickel sheet and mounting piece, the pole post main part is worn in the top cover and is connected with the electric core electricity, the nickel sheet is connected pole post main part, and the mounting piece ring is established in the peripheral part of pole post main part, and the mounting piece is set with the wire slot, the battery detection control unit is located in the top cover for gathering the data information of electric core, and one end of wire is connected with battery detection control unit electricity, and the other end of wire is connected with nickel sheet electricity, and wire is at least partially accommodated in the wire slot, forms the stable electrical connection structure, can effectively reduce the connection resistance, reduces energy loss, guarantees the stable transmission of current between electric core and external circuit. Moreover, the setting of wire slot provides reliable protection for wire, prevents wire from physical damage and chemical corrosion.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to a single cell battery and a battery pack. Background Technology

[0002] In the field of power battery technology, the Battery Management System (BMS) plays an irreplaceable role in ensuring battery performance, safety, and overall vehicle operating efficiency. Traditional BMSs primarily monitor the status of the battery pack or individual cells by collecting external electrical signals, without directly connecting to the internal cell structure. However, in smart cell technology, the BMS needs to establish a connection with the terminals of the smart cells to achieve more accurate status perception and data interaction, preventing overcharging during charging and over-discharging during discharging.

[0003] However, current smart battery cell technology still faces many unresolved issues regarding the connection between the BMS and the battery cell terminals. Existing connection methods, whether simple plug-in connections or more complex structures, struggle to ensure stable connections under demanding operating conditions. Continuous vibrations during vehicle operation can easily loosen the connection between the BMS and the terminals, affecting signal transmission stability. Furthermore, the heat generated during charging and discharging causes temperature fluctuations; this thermal expansion and contraction negatively impacts connection stability, leading to fluctuations in connection resistance and affecting data acquisition accuracy. Utility Model Content

[0004] The main purpose of this invention is to propose a single battery cell and battery pack, which aims to solve the technical problem of insufficient stability in the connection between the existing BMS and the terminal post.

[0005] To achieve the above objectives, this utility model proposes a single-cell battery, the single-cell battery comprising: A housing having a height direction, and an accommodating cavity extending along the height direction is formed inside the housing; A battery cell, wherein the battery cell is disposed within the accommodating cavity; A top cover, which covers the housing along the height direction H of the housing to close the receiving cavity; The electrode assembly includes an electrode body, a nickel plate, and a mounting component. The electrode body is inserted through the top cover along the height direction and is electrically connected to the battery cell. The nickel plate is connected to the electrode body. The mounting component is arranged around the periphery of the electrode body and has a wiring groove. A battery detection and control unit, located on the top cover, is used to collect data information from the battery cell; A wire, one end of which is electrically connected to the battery detection and control unit, and the other end of which is electrically connected to the nickel sheet, wherein the wire is at least partially housed within the wiring groove.

[0006] In some embodiments, the top cover includes a first surface and a second surface, the first surface and the second surface being disposed opposite to each other in the height direction, and the top cover having a through hole penetrating the first surface and the second surface; The pole body includes a column and a flange. The column is connected to the flange. The column passes through the through hole. The flange protrudes from the side where the second surface is located. The nickel sheet is connected to the column.

[0007] In some embodiments, the column includes a rod and a protrusion. The rod is connected to the flange, and the protrusion is connected to the rod. The protrusion protrudes from the side where the first surface is located. The diameter of the protrusion is larger than the diameter of the rod. The protrusion, the rod, and the flange together form a receiving groove. The nickel sheet is disposed in the receiving groove and is fixedly connected to the rod.

[0008] In some embodiments, the mounting member has a mounting hole that extends through the height direction, and the mounting member is disposed on the outer periphery of the column through the mounting hole; The wiring groove is located on the side of the mounting component adjacent to the mounting hole, and the wiring groove is connected to the mounting hole.

[0009] In some embodiments, the mounting component includes a mounting body and a mounting ring connected to one side of the mounting body and extending along the height direction. The mounting body has a first hole segment disposed along the height direction, and the mounting ring has a second hole segment disposed along the height direction. The first hole segment and the second hole segment communicate to form the mounting hole. Wherein, the diameter of the first hole segment is smaller than the diameter of the second hole segment, and a stepped surface is formed at the connection between the first hole segment and the second hole segment. The protrusion is located in the first hole segment, and the stepped surface provides support for the protrusion.

[0010] In some embodiments, the mounting ring has a first groove on the side adjacent to the mounting hole, the mounting body has a second groove on the side of the stepped surface, and the mounting body has a third groove on the side adjacent to the mounting hole. The first groove, the second groove, and the third groove are connected in sequence to form the wiring groove.

[0011] In some embodiments, in the height direction, the mounting ring has a first top surface and the protrusion has a second top surface, wherein the first top surface is not higher than the second top surface.

[0012] In some embodiments, the electrode assembly is provided with multiple electrodes, including a positive electrode assembly and a negative electrode assembly, the positive electrode assembly and the negative electrode assembly being spaced apart from each other on the top cover, and each positive electrode assembly and the negative electrode assembly including an electrode body, a nickel sheet and a mounting component; The battery detection and control unit is located between the positive terminal assembly and the negative terminal assembly. Multiple wires are provided, including positive wires and negative wires. One end of the positive wire is electrically connected to the battery detection and control unit, and the other end of the positive wire is electrically connected to the nickel plate of the positive terminal assembly. One end of the negative wire is electrically connected to the battery detection and control unit, and the other end of the negative wire is electrically connected to the nickel plate of the negative terminal assembly.

[0013] In some embodiments, the battery detection and control unit integrates an information acquisition unit and a wireless communication unit. The information acquisition unit is used to acquire data information of the battery cell, and the wireless communication unit is used to wirelessly transmit the data information of the battery cell.

[0014] This utility model also provides a battery pack, including a single battery cell.

[0015] The battery detection and control unit provided in this application is located on the top cover for collecting data information from the battery cell. One end of a wire is electrically connected to the battery detection and control unit, and the other end is electrically connected to a nickel plate. At least part of the wire is housed within a wiring groove, forming a robust electrical connection structure. This effectively reduces connection resistance, minimizes energy loss, and ensures stable current transmission between the battery cell and the external circuit. Furthermore, the wiring groove provides reliable protection for the wire, preventing physical damage and chemical corrosion, reducing the risk of loosening due to vibration, impact, or other external forces, and ensuring stable data transmission. Simultaneously, the wiring groove organizes the wires, preventing tangled wiring and promoting a neat internal layout for the individual battery cell. This facilitates the production, assembly, and subsequent maintenance of the individual battery cell, improving production efficiency and maintenance convenience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a single-cell battery according to an embodiment of the present invention; Figure 2 This is a structural schematic diagram of an embodiment of the pole body of this utility model; Figure 3 This is a structural schematic diagram of an embodiment of the mounting component of this utility model.

[0017] Explanation of icon numbers: .

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] Please refer to Figures 1 to 3This application provides an embodiment of a single-cell battery 100, including a housing 10, a cell, a top cover 20, an electrode assembly, a battery detection and control unit 41, and a wire 42. The housing 10 has a height direction H, and an accommodating cavity extending along the height direction H is formed inside the housing 10. The cell is disposed in the accommodating cavity. The top cover 20 covers the housing 10 along the height direction H to close the accommodating cavity. The electrode assembly includes an electrode body 31, a nickel sheet 32, and a mounting member 33. The electrode body 31 passes through the top cover 20 along the height direction H and is electrically connected to the cell. The nickel sheet 32 ​​is connected to the electrode body 31. The mounting member 33 is circumferentially disposed around the electrode body 31 and has a wiring groove 331. The battery detection and control unit 41 is disposed on the top cover 20 and is used to collect data information from the cell. One end of the wire 42 is electrically connected to the battery detection and control unit 41, and the other end of the wire 42 is electrically connected to the nickel sheet 32. The wire 42 is at least partially accommodated in the wiring groove 331.

[0024] The casing 10 forms a closed space with a cavity, providing physical protection for the battery cell, isolating it from external environmental factors such as dust, liquids, and mechanical impacts, maintaining a stable working environment inside the battery, and ensuring the safe and reliable operation of the battery cell.

[0025] The top cover 20 seals the housing 10 along the height direction H, enclosing the accommodating cavity, and also serves as the mounting carrier for the terminal post assembly and the battery detection and control unit 41. Its surface is provided with fixing structures that match the terminal post assembly mounting parts 33, such as mounting holes 332 and threaded holes, to ensure that the terminal post assembly is securely installed; it also provides a mounting area for the battery detection and control unit 41, providing a basis for the integrated layout of various components on the top of the battery.

[0026] The electrode post body 31 extends through the top cover 20 along the height direction H. One end is reliably electrically connected to the electrode of the battery cell through welding, crimping, or other methods, while the other end serves as the port for the battery to connect to the external electrical system. The electrode post body 31 is made of highly conductive materials, such as copper or nickel-plated copper, to ensure stable high-current transmission between the battery cell and the external circuit, while also providing an electrical signal conduction path for the battery detection and control unit 41 to collect battery cell data.

[0027] The nickel sheet 32, as a key component connecting the electrode body 31 and the wire 42, is fixed to the side of the electrode body 31 through processes such as welding and riveting. The nickel sheet 32 ​​has good conductivity and corrosion resistance, which can effectively reduce contact resistance and ensure the accuracy and stability of signal transmission between the battery detection and control unit 41 and the battery cell.

[0028] The mounting component 33 is circumferentially located around the terminal block body 31 and can be fixed to the top cover 20 by means of threaded connection, snap-fit ​​connection, etc., providing mechanical support for the terminal block body 31 and preventing it from shaking or falling off during battery use. The wiring groove 331 opened in the mounting component 33 is used to guide and constrain the direction of the wire 42, so that the wire 42 is at least partially contained in the wiring groove 331, avoiding shaking or pulling of the wire 42 due to vibration, and reducing the risk of interference and wear between the wire 42 and other components.

[0029] The battery detection and control unit 41 is installed on the top cover 20 and integrates various sensors and data processing chips. The battery detection and control unit 41 collects key data information such as voltage, current, and temperature of the battery cell through the connection of wires 42, nickel plates 32 and electrode body 31, processes, analyzes and calibrates the collected data, and transmits the processed data to the external control system to realize real-time monitoring and management of the battery cell status, ensuring battery performance and safety.

[0030] The battery detection and control unit 41 provided in this application is located on the top cover 20 for collecting data information from the battery cell. One end of the wire 42 is electrically connected to the battery detection and control unit 41, and the other end is electrically connected to the nickel plate 32. The wire 42 is at least partially housed within the wiring groove 331, forming a stable electrical connection structure. This effectively reduces connection resistance, minimizes energy loss, and ensures stable current transmission between the battery cell and the external circuit. Furthermore, the wiring groove 331 provides reliable protection for the wire 42, preventing physical damage and chemical corrosion, reducing the risk of loosening due to external forces such as vibration and impact, and ensuring stable data transmission. Simultaneously, the wiring groove 331 organizes the wiring of the wire 42, preventing it from becoming tangled and contributing to a neat internal layout of the single battery cell 100. This facilitates the production, assembly, and subsequent maintenance of the single battery cell 100, improving production efficiency and maintenance convenience.

[0031] In some embodiments, the top cover 20 includes a first surface and a second surface, the first surface and the second surface are disposed opposite to each other in the height direction H, and the top cover 20 is provided with a through hole penetrating the first surface and the second surface; The pole body 31 includes a pole body 311 and a flange portion 312. The pole body 311 is connected to the flange portion. The pole body 311 passes through the through hole. The flange portion 312 protrudes from the side where the second surface is located. The nickel sheet 32 ​​is fixedly connected to the pole body 311.

[0032] The through hole penetrating the first and second surfaces of the top cover 20 serves as the installation positioning reference for the pole body 31. Radial constraint is achieved through the fit tolerance between the hole wall and the pole body 311, preventing circumferential rotation or displacement of the pole body 31. Simultaneously, an insulating coating or sealing ring can be provided on the inner wall of the through hole to prevent direct electrical conduction between the pole body 31 and the top cover 20, thus improving electrical safety.

[0033] The column 311, serving as the core channel for transmitting electrical signals and current, connects to the battery cell electrodes after passing through the through-hole in the top cover 20. The fit between its outer diameter and the inner diameter of the through-hole ensures that the column body 31 is vertically positioned in the height direction H, reducing the risk of poor contact due to tilting. The surface of the column 311 can be plated with nickel or gold to reduce the contact resistance with the nickel sheet 32.

[0034] The flange 312 protrudes from the second side of the top cover 20 to form a ring support structure, which can increase the contact area with the top cover 20 and evenly distribute the internal pressure of the single cell 100 to the top cover 20, avoiding deformation or damage caused by local stress concentration.

[0035] When the nickel sheet 32 ​​is fixedly connected to the column 311, the supporting role of the flange 312 significantly improves the connection reliability: during the welding process, the flange 312 can serve as a heat conduction buffer area to avoid the impact of high temperature on the connection between the column 311 and the battery cell; during use, even if subjected to vibration or thermal stress, the flange 312 can reduce the relative displacement between the nickel sheet 32 ​​and the column 311 through rigid support, maintaining a low contact resistance state.

[0036] In this embodiment, the fit between the through hole of the top cover 20 and the column 311 achieves radial limiting, and the contact between the flange 312 and the second surface of the top cover 20 achieves axial constraint. Compared with the traditional single through connection, the three-dimensional degree of freedom of the pole body 31 is effectively controlled, enhancing the connection stability between the pole body 31 and the top cover 20.

[0037] Please continue to refer to this. Figure 2 In some embodiments, the column 311 includes a rod portion 3111 and a protrusion 3112. The rod portion 3111 is connected to the flange portion 312. The rod portion 3111 and the protrusion 3112 are connected. The protrusion 3112 protrudes from the side where the first surface is located. The diameter of the protrusion 3112 is larger than the diameter of the rod portion 3111. The protrusion 3112, the rod portion 3111, and the flange portion 312 together form a receiving groove 3113. The nickel sheet 32 ​​is disposed in the receiving groove 3113 and is fixedly connected to the rod portion 3111.

[0038] The rod portion 3111 serves as the basic connecting part of the column 311. One end is fixedly connected to the flange portion 312, and the other end connects to the protrusion 3112. It carries the current and signal transmission between the conductive core and the electrode body 31 in the height direction H. The diameter of the rod portion 3111 is adapted to the through hole size of the top cover 20 to ensure a tight fit with the top cover 20. At the same time, it provides a welding plane for the nickel sheet 32 ​​and restricts the displacement of the nickel sheet 32 ​​in the vertical direction through its cooperation with the receiving groove 3113.

[0039] The protrusion 3112 protrudes from the side where the first surface of the top cover 20 is located. The large diameter design forms a limiting structure, which constrains the nickel sheet 32 ​​in the horizontal direction to prevent the nickel sheet 32 ​​from shifting laterally due to vibration or external force.

[0040] The receiving groove 3113 is formed by the protrusion 3112, the rod 3111, and the flange 312, providing a dedicated installation space for the nickel sheet 32. Its three-dimensional limiting design (the horizontal direction is constrained by the protrusion 3112 and the flange 312, and the vertical direction is constrained by the stepped surface formed by the rod 3111 and the protrusion 3112) enables the nickel sheet 32 ​​to be embedded and fixed in the receiving groove 3113, which greatly reduces its displacement freedom under vibration and thermal deformation environments.

[0041] The nickel sheet 32 ​​is disposed within the receiving groove 3113 and electrically connected to the rod 3111, and is fixed by welding or pressing. The enclosed space provided by the receiving groove 3113 protects the connection point of the nickel sheet 32 ​​from external environmental corrosion (such as dust and moisture), and reduces the stress on the connection point between the nickel sheet 32 ​​and the rod 3111 through structural limiting, thus ensuring the long-term stability of the electrical connection.

[0042] This embodiment utilizes the limiting effect of the protrusion 3112 and the wrapping characteristics of the receiving groove 3113 to restrict the displacement of the nickel sheet 32 ​​while reducing the direct impact of external stress on the connection point, ensuring stable electrical signal transmission between the battery detection and control unit 41 and the battery cell. At the same time, the structural integration reduces external fixing components and improves space utilization.

[0043] In some embodiments, the mounting member 33 has a mounting hole 332 that extends through the height direction H, and the mounting member 33 is disposed on the outer periphery of the column 311 through the mounting hole 332; The wiring trough 331 is located on the side of the mounting component 33 adjacent to the mounting hole 332, and the wiring trough 331 is connected to the mounting hole 332.

[0044] In this embodiment, the mounting hole 332, which is set along the Z direction, has an inner diameter that matches the outer diameter of the column 311. It is fitted onto the outer circumference of the column 311 by means of interference fit, thread fit, or snap fit, providing circumferential constraint for the electrode body 31, sharing the fixing pressure of the top cover 20 on the electrode body 31, further limiting the shaking of the electrode body 31 in a vibration environment, preventing its connection with the top cover 20 from loosening, and ensuring the coaxiality of the mounting part 33 and the electrode body 31, providing an installation foundation for the precise docking of the wiring groove 331 with the nickel sheet 32 ​​and the wires 42 of the battery detection and control unit 41.

[0045] The wiring trough 331 is opened inside the mounting part 33 and communicates with the mounting hole 332. The guide wire 42 extends axially along the column 311, so that the wire 42 can be smoothly connected from the battery detection control unit 41 to the nickel sheet 32 ​​in the receiving groove 3113, avoiding the wire 42 from being randomly tangled or interfering with other components.

[0046] In this embodiment, the mounting component 33 is fitted onto the outer periphery of the column 311 through the mounting hole 332, forming a multi-layered mechanical protection structure together with the protrusion 3112 and flange 312 of the column 311. The protrusion 3112 restricts the lateral displacement of the nickel sheet 32, the flange 312 disperses the internal pressure, and the mounting component 33 further reinforces the column 311 through the mounting hole 332. The three components work together to significantly improve the stability of the pole assembly under complex working conditions.

[0047] Please continue to refer to this. Figure 3 In some embodiments, the mounting member 33 includes a mounting body 333 and a mounting ring 334 extending along the height direction H on one side of the mounting body 333. The mounting body 333 has a first hole segment 3331 arranged along the height direction H, and the mounting ring 334 has a second hole segment 3341 arranged along the height direction H. The first hole segment 3331 and the second hole segment 3341 communicate to form a mounting hole 332. The diameter of the first hole segment 3331 is smaller than the diameter of the second hole segment 3341, and a stepped surface 335 is formed at the connection between the first hole segment 3331 and the second hole segment 3341. The protrusion 3112 is located in the first hole segment 3331, and the stepped surface 335 supports the protrusion 3112.

[0048] The first hole segment 3331 is formed in the mounting body 333, with a smaller diameter to fit the protrusion 3112 of the column 311, providing an embedding space for the protrusion 3112. The second hole segment 3341 is formed along the height direction H in the mounting ring 334, with a larger diameter to fit the rod portion 3111 of the column 311. Through interference fit or clearance fit, the rod portion 3111 is circumferentially fixed, and works in conjunction with the first hole segment 3331 to achieve three-dimensional positioning of the column 311.

[0049] The stepped surface 335 serves as a key structure at the connection between the first hole segment 3331 and the second hole segment 3341. Its horizontal surface is tightly fitted with the bottom surface of the protrusion 3112, forming a rigid support. When the battery is subjected to vibration, impact, or changes in internal pressure, the stepped surface 335 evenly distributes the external force to the mounting body 333, preventing the connection between the protrusion 3112 and the rod 3111 from breaking due to uneven force distribution. At the same time, it prevents the connection point between the nickel sheet 32 ​​and the rod 3111 from loosening due to displacement of the column 311.

[0050] In this embodiment, the step surface 335 axially limits the protrusion 3112, and the second hole section 3341 radially constrains the rod 3111. Combined with the stepped structure of the column 311 itself, this forms an all-round fixation of the pole body 31, reducing the probability of the pole assembly loosening in high-frequency vibration testing, thereby effectively reducing the probability of signal transmission interruption.

[0051] Please continue to refer to this. Figure 3 In some embodiments, the mounting ring 334 has a first groove 3342 on the side adjacent to the mounting hole 332, the mounting body 333 has a second groove 3332 on the side of the step surface 335, and the mounting body 333 has a third groove 3333 on the side adjacent to the mounting hole 332. The first groove 3342, the second groove 3332, and the third groove 3333 are connected in sequence to form a wiring groove 331.

[0052] The first groove segment 3342 serves as the starting end of the wiring groove 331, guiding the wire 42 towards the pole body 31. The groove wall acts as a limiting element, fixing the initial direction of the wire 42 and preventing it from shifting during initial installation. The second groove segment 3332 follows the first groove segment 3342 and extends towards the pole body 311, tightly fitting with the stepped surface 335. The rigid support of the stepped surface 335 enhances the fixing strength of the wire 42 in this area. When the pole body 31 is subjected to axial force, the second groove segment 3332 can disperse the pressure through the stepped surface 335, preventing the wire 42 from breaking due to pressure. The third groove segment 3333, located near the connection between the pole body 3111 and the nickel sheet 32, provides final positioning for the wire 42, making the welding or crimping process between the wire 42 and the nickel sheet 32 ​​more precise and stable. The groove wall can wrap around the wire 42, preventing the connection point from breaking due to external pulling.

[0053] In this embodiment, the segmented groove's wrapping and limiting of the wire 42, compared to traditional wire harness fixing methods, effectively avoids signal interruption caused by loose wire 42, ensuring the stability of data transmission between the battery detection and control unit 41 and the battery cell. Furthermore, the wiring groove 331 provides a clear layout path for the wire 42; during assembly, workers only need to embed the wire 42 along the groove segment to complete the wiring, reducing assembly time and lowering the rework rate due to wiring errors.

[0054] In some embodiments, in the height direction H, the mounting ring 334 has a first top surface and the protrusion 3112 has a second top surface, the first top surface being no higher than the second top surface.

[0055] Since the second top surface of the protrusion 3112 is higher than the first top surface of the mounting ring 334, when the battery encounters external collisions, compression, or other conditions, the protrusion 3112 will act as the first stress-bearing structure, dispersing the impact force to the entire column 311 and mounting component 33. For example, when the top of the battery is subjected to vertical pressure, the protrusion 3112, through its cooperation with the first hole section 3331 of the mounting body 333, transmits the pressure to the mounting body 333 and the top cover 20, reducing the risk of deformation of the mounting ring 334 due to direct pressure, thereby protecting the wires 42 in the wiring trough 331 from compression damage.

[0056] Although the mounting ring 334 is lower than the protrusion 3112, it still forms a circumferential constraint on the rod portion 3111 of the post 311 through the second hole section 3341, thus forming a stable support for the pole body 31 together with the protrusion 3112. At the same time, the wiring groove 331 on the mounting ring 334 can further buffer the stress on the wire 42 after the pressure is distributed by the protrusion 3112, ensuring the reliability of the connection point between the wire 42 and the nickel sheet 32.

[0057] This embodiment constructs a hierarchical spatial layout structure by setting the first top surface of the mounting ring 334 in the height direction H to be no higher than the second top surface of the protrusion 3112 in the height direction H. This design utilizes the height advantage of the protrusion 3112 to form three-dimensional protection for the mounting ring 334 and the wires 42 within the wiring groove 331, while optimizing the vertical distribution of the space above the battery. When the battery is subjected to external pressure or internal stress changes, the protrusion 3112 can preferentially bear and disperse the pressure, preventing the mounting ring 334 from deforming due to excessive force and squeezing the wires 42 within the wiring groove 331.

[0058] In some embodiments, multiple electrode post assemblies are provided, including a positive electrode post assembly 301 and a negative electrode post assembly 302. The positive electrode post assembly 301 and the negative electrode post assembly 302 are spaced apart on the top cover 20. Both the positive electrode post assembly 301 and the negative electrode post assembly 302 include an electrode post body 31, a nickel sheet 32 ​​and a mounting component 33. The battery detection and control unit 41 is located between the positive terminal assembly 301 and the negative terminal assembly 302. Multiple wires 42 are provided, including a positive wire 421 and a negative wire 422. One end of the positive wire 421 is electrically connected to the battery detection and control unit 41, and the other end of the positive wire 421 is electrically connected to the nickel plate 32 of the positive terminal assembly 301. One end of the negative wire 422 is electrically connected to the battery detection and control unit 41, and the other end of the negative wire 422 is electrically connected to the nickel plate 32 of the negative terminal assembly 302.

[0059] In this embodiment, the single-cell battery 100 achieves high efficiency in cell data acquisition and stability in electrical connection through a symmetrically spaced layout of the positive and negative terminal posts 302 and a centrally positioned battery detection and control unit 41. The positive and negative terminal posts 301 and 302 are spaced apart along the top cover 20, providing external connection ports for the positive and negative terminals of the cell. The battery detection and control unit 41 is located between them and is connected to the nickel plates 32 of the positive and negative terminal posts 301 and 302 respectively via positive wires 421 and 422, forming independent data acquisition loops. This layout utilizes spatial symmetry to balance the internal electric field distribution of the battery, reducing the impact of electromagnetic interference on signal transmission. Simultaneously, the cooperation between the wires 42 and the wiring grooves 331 of the mounting component 33 ensures stable signal transmission paths for the positive and negative terminals, preventing connection failures due to vibration or thermal deformation, and guaranteeing accurate monitoring of the cell status by the battery detection and control unit 41.

[0060] In some embodiments, the battery detection and control unit 41 integrates an information acquisition unit and a wireless communication unit. The information acquisition unit is used to acquire data information of the battery cell, and the wireless communication unit is used to wirelessly transmit data information of the battery cell.

[0061] In this embodiment, the single battery cell 100 integrates an information acquisition unit and a wireless communication unit in the battery detection and control unit 41. The information acquisition unit acquires data such as voltage, current, and temperature of the cell through positive and negative wires 422, and transmits the data to the wireless communication unit after signal conditioning and analog-to-digital conversion. The wireless communication unit then uses Bluetooth, Wi-Fi, or a dedicated wireless protocol to wirelessly transmit the processed data to an external monitoring terminal (such as a vehicle central control system or an energy storage power station management platform). This design breaks free from the constraints of traditional wired transmission and avoids signal interference and connection reliability issues caused by complex wiring layouts. At the same time, through the collaborative work of the two units, real-time acquisition and remote transmission of cell data are achieved, providing technical support for intelligent management of battery status.

[0062] This application also provides a battery pack, including the single cell 100 as described above. Since the battery pack adopts all the technical solutions of all embodiments of the single cell 100 described above, the battery pack of this utility model also possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0063] The above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is impossible to exhaustively list all possible implementations here. All obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A single-cell battery, characterized in that, The single battery cell includes: A housing having a height direction, and an accommodating cavity extending along the height direction is formed inside the housing; A battery cell, wherein the battery cell is disposed within the accommodating cavity; A top cover, which seals the housing along the height direction to enclose the accommodating cavity; The electrode assembly includes an electrode body, a nickel plate, and a mounting component. The electrode body is inserted through the top cover along the height direction and is electrically connected to the battery cell. The nickel plate is connected to the electrode body. The mounting component is arranged around the periphery of the electrode body and has a wiring groove. A battery detection and control unit, located on the top cover, is used to collect data information from the battery cell; A wire, one end of which is electrically connected to the battery detection and control unit, and the other end of which is electrically connected to the nickel sheet, wherein the wire is at least partially housed within the wiring groove.

2. The single-cell battery according to claim 1, characterized in that, The top cover includes a first surface and a second surface, which are arranged opposite to each other in the height direction. The top cover is provided with a through hole penetrating the first surface and the second surface. The pole body includes a column and a flange. The column is connected to the flange. The column passes through the through hole. The flange protrudes from the side where the second surface is located. The nickel sheet is fixedly connected to the column.

3. The single-cell battery according to claim 2, characterized in that, The column includes a rod and a protrusion. The rod is connected to the flange. The protrusion is connected to the rod. The protrusion protrudes from the side where the first surface is located. The diameter of the protrusion is larger than the diameter of the rod. The protrusion, the rod, and the flange together form a receiving groove. The nickel sheet is disposed in the receiving groove and is fixedly connected to the rod.

4. The single-cell battery according to claim 3, characterized in that, The mounting component has a through mounting hole extending along the height direction, and the mounting component is disposed on the outer periphery of the column through the mounting hole; The wiring groove is located on the side of the mounting component adjacent to the mounting hole, and the wiring groove is connected to the mounting hole.

5. The single-cell battery according to claim 4, characterized in that, The mounting component includes a mounting body and a mounting ring connected to one side of the mounting body and extending along the height direction. The mounting body has a first hole segment arranged along the height direction, and the mounting ring has a second hole segment arranged along the height direction. The first hole segment and the second hole segment communicate to form the mounting hole. Wherein, the diameter of the first hole segment is smaller than the diameter of the second hole segment, and a stepped surface is formed at the connection between the first hole segment and the second hole segment.

6. The single-cell battery according to claim 5, characterized in that, The mounting ring has a first groove on the side adjacent to the mounting hole, the mounting body has a second groove on the side of the stepped surface, and the mounting body has a third groove on the side adjacent to the mounting hole. The first groove, the second groove, and the third groove are connected in sequence to form the wiring groove.

7. The single-cell battery according to claim 5, characterized in that, In the height direction, the mounting ring has a first top surface, the protrusion has a second top surface, and the first top surface is not higher than the second top surface.

8. The single-cell battery according to any one of claims 1 to 7, characterized in that, The electrode assembly is provided in multiple ways, including a positive electrode assembly and a negative electrode assembly. The positive electrode assembly and the negative electrode assembly are spaced apart on the top cover. Each positive electrode assembly and the negative electrode assembly includes an electrode body, a nickel sheet and a mounting component. The battery detection and control unit is located between the positive terminal assembly and the negative terminal assembly. Multiple wires are provided, including positive wires and negative wires. One end of the positive wire is electrically connected to the battery detection and control unit, and the other end of the positive wire is electrically connected to the nickel plate of the positive terminal assembly. One end of the negative wire is electrically connected to the battery detection and control unit, and the other end of the negative wire is electrically connected to the nickel plate of the negative terminal assembly.

9. The single-cell battery according to any one of claims 1 to 7, characterized in that, The battery detection and control unit integrates an information acquisition unit and a wireless communication unit. The information acquisition unit is used to collect data information of the battery cell, and the wireless communication unit is used to wirelessly transmit the data information of the battery cell.

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

Images