Monobloc cell and battery module

Abstract

The utility model relates to battery technical field discloses a kind of single battery cell and battery module.Single battery cell includes: battery cell main body, the end of battery cell main body is provided with positive pole and negative pole; Chip acquisition module is installed in the outer surface of battery cell main body and is located between positive pole and negative pole, and chip acquisition module is respectively electrically connected with positive pole and negative pole.A useful effect: the utility model gives a kind of single battery cell, by setting chip acquisition module on each single battery cell of the battery module, it is helpful to trace battery cell duration use data information, make ladder utilization more reliable, and some test evaluation work of later period can also be reduced, improve recycling recycling circulation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to individual battery cells and battery modules. Background Technology

[0002] With the rapid development of new energy vehicles and the energy storage industry, power and energy storage batteries will face a wave of retirement during the replacement cycle. Second-hand utilization technology can maximize the utilization of power and energy storage batteries throughout their entire life cycle, while alleviating recycling pressure and environmental pollution problems. However, most existing battery cells are not designed with integrated data collection modules that can record usage history, health status, and other information. This necessitates extensive testing and evaluation of each cell before second-hand utilization to determine its suitability, increasing costs and time consumption. Utility Model Content

[0003] In view of this, the present invention provides a single battery cell and a battery module to solve the problems of high energy consumption, time consumption and high cost in the process of cascade utilization.

[0004] In a first aspect, this utility model provides a single battery cell, comprising:

[0005] The battery cell body has a positive terminal and a negative terminal at its ends;

[0006] A chip acquisition module is installed on the outer surface of the battery cell body and located between the positive terminal and the negative terminal. The chip acquisition module is electrically connected to the positive terminal and the negative terminal respectively.

[0007] Beneficial effects: This utility model provides a single battery cell. By setting a chip acquisition module on each single battery cell that makes up a battery module, it is helpful to trace the usage data of the battery cell over time, making the cascade utilization more reliable. It can also reduce some of the later testing and evaluation work and improve the recycling efficiency.

[0008] Furthermore, compared to related technologies, the single-cell battery of this invention has at least the following advantages: the chip acquisition module integrated on the battery cell can record and store key data such as the battery cell's health status, remaining lifespan, and usage history. This allows for quick and accurate assessment of the battery cell's condition during secondary utilization by consulting this information, reducing unnecessary testing and screening work, and improving the efficiency and reliability of the recycling process.

[0009] In one optional embodiment, the positive electrode post includes a positive electrode protrusion and a positive electrode recess, wherein the height of the positive electrode protrusion is greater than the height of the positive electrode recess.

[0010] The negative electrode post includes a negative electrode protrusion and a negative electrode recess, wherein the height of the negative electrode protrusion is greater than the height of the negative electrode recess.

[0011] The chip acquisition module is electrically connected to the positive electrode settling section and the negative electrode settling section, respectively.

[0012] Beneficial effects: The recessed sections (i.e., the positive and negative electrode recessed sections) have two functions. The first function is to make electrical connections with the chip acquisition module, and the second function is to establish electrical connections with other individual battery cells. At the same time, since the protrusions of the terminals (i.e., the positive and negative electrode protrusions) can also be used to establish electrical connections with other individual battery cells, the terminals of the individual battery cells of this invention can support multiple welding operations. That is, the convex-shaped terminal design of this invention allows for multiple welding operations at the same position. This not only improves the flexibility of the initial assembly, but also provides convenience for subsequent cascade utilization and ensures good electrical contact performance.

[0013] In one optional embodiment, the positive electrode settling portion includes a first chip connection area located on the side of the positive electrode protrusion facing the negative electrode post; the negative electrode settling portion includes a second chip connection area located on the side of the negative electrode protrusion facing the positive electrode post.

[0014] The chip acquisition module is electrically connected to the first chip connection area and the second chip connection area, respectively.

[0015] Beneficial effects: By setting a specific chip connection area in the recessed section, the internal space layout of the battery cell is made more compact and reasonable, without affecting the design of the main current path. At the same time, since the chip acquisition module is connected to the specially designed chip connection area, rather than directly to the protrusion, the risk of external physical damage can be effectively reduced, and the possibility of failure due to accidental short circuits can be lowered.

[0016] In one optional embodiment, the positive electrode recess further includes two first busbar connection areas, which are located on opposite sides of the positive electrode protrusion and the first chip connection area, respectively. The first busbar connection areas are used to connect busbar components.

[0017] The negative electrode recess includes two second busbar connection areas, which are located on opposite sides of the negative electrode protrusion and the second chip connection area, respectively. The second busbar connection areas are used to connect busbar components.

[0018] The first and second bus connection areas are used for the first welding of the bus element, while the positive and negative electrode recesses are used for the second welding of the bus element.

[0019] Beneficial effects: By designing the busbar connection area and protrusions, the battery cells can be initially and then re-welded at different locations, greatly enhancing the system's flexibility and adapting to various application scenarios. Furthermore, the clearly defined locations of the initial and secondary soldering simplify the disassembly and reassembly process, reducing unnecessary complexity and losses. In addition, the rational arrangement of the solder points ensures stability and efficiency during initial assembly and provides a reliable solution for subsequent maintenance and reuse, improving the overall system reliability and performance.

[0020] In one alternative implementation, the height of the positive electrode protrusion is equal to the height of the negative electrode protrusion; and / or, the height of the positive electrode settling portion is equal to the height of the negative electrode settling portion.

[0021] Beneficial effects: Consistent positive and negative terminal heights improve the assembly precision of battery cells within the battery module, ensuring stable and reliable electrical connections between each cell and reducing issues such as poor contact. Simultaneously, consistent platform height facilitates more efficient internal component layout, allowing for greater flexibility in the installation position of chip acquisition modules and providing more convenient conditions for secondary soldering. The symmetrical design simplifies mold design and manufacturing processes, reducing production costs. Furthermore, the standardized height facilitates the operation of automated production lines, improving production efficiency.

[0022] In one optional implementation, the chip acquisition module integrates a temperature sensor;

[0023] The chip acquisition module has a hollow structure to form a thermally conductive space between the temperature sensor and the battery cell body, and the thermally conductive space is filled with thermally conductive material.

[0024] Beneficial effects: On the one hand, placing a temperature sensor directly on the battery cell body and enhancing heat transfer efficiency with thermally conductive materials can more accurately reflect the actual operating temperature of the battery cell, avoiding errors caused by indirect measurements. On the other hand, the hollow structure combined with the thermally conductive material design not only facilitates temperature data acquisition but also plays a certain role in heat dissipation, helping to maintain the battery cell within a relatively ideal temperature range, thereby improving its performance and lifespan.

[0025] In one alternative implementation, the single battery cell further includes:

[0026] A chip protective cover is installed on the outer surface of the battery cell body and covers the chip acquisition module. The chip protective cover is located between the positive terminal and the negative terminal.

[0027] Beneficial effects: The chip protective cover provides additional physical protection for the chip acquisition module, preventing it from being affected by external environmental factors (such as impact, moisture, dust, etc.), thus extending the lifespan of the chip acquisition module. Furthermore, by providing a sealed protective space, it reduces the potential damage to the internal electronic components of the chip acquisition module from the external environment, improving the reliability of the entire system.

[0028] In one optional embodiment, the chip protective cover includes a top cover and fixing portions located on both sides of the top cover. The fixing portions are fixed to the outer surface of the battery cell body, and a closed protective space is defined between the top cover and the battery cell body. The chip acquisition module is located within the protective space.

[0029] Beneficial effects: By setting a protective cover containing a top cover and a fixing part on the outside of the chip acquisition module, the protection of the chip acquisition module is significantly enhanced, and the reliability and durability of the system are improved.

[0030] In one optional embodiment, the chip acquisition module is a near-field communication chip acquisition module, and an antenna mounting part is provided on the outer surface of the chip protective cover. The antenna mounting part is used to install a communication antenna that enables near-field communication with the chip acquisition module.

[0031] Beneficial effects: NFC technology allows for fast and convenient data exchange between the chip acquisition module and external devices without the need for a physical connection. By optimizing the antenna design and installation location, the speed and accuracy of data transmission can be significantly improved. Furthermore, because it supports contactless communication, maintenance personnel can easily read the status information of the battery cells using handheld devices without directly touching or disassembling the cells, greatly simplifying the process of daily maintenance and troubleshooting.

[0032] Secondly, this utility model also provides a battery module, comprising:

[0033] At least two individual battery cells as described in the first aspect of the present invention are arranged sequentially and connected by a bus element. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is one of the structural schematic diagrams of a single battery cell according to an embodiment of the present utility model;

[0036] Figure 2 This is the second schematic diagram of the structure of a single battery cell according to an embodiment of the present utility model;

[0037] Figure 3 This is the third schematic diagram of the structure of a single battery cell according to an embodiment of the present invention;

[0038] Figure 4 This is a partial structural schematic diagram of a single battery cell according to an embodiment of the present utility model;

[0039] Figure 5 This is a schematic diagram of the structure of the chip protective cover according to an embodiment of the present utility model;

[0040] Figure 6 This is one of the structural schematic diagrams of the battery module according to an embodiment of the present utility model;

[0041] Figure 7 This is a second schematic diagram of the battery module structure according to an embodiment of the present utility model;

[0042] Figure 8 This is one of the structural schematic diagrams of several individual battery cells after cascade utilization according to an embodiment of this utility model;

[0043] Figure 9 This is the second schematic diagram of the structure of several individual battery cells after cascade utilization, according to an embodiment of this utility model.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Battery cell body; 2. Positive electrode post; 21. Positive electrode protrusion; 22. Positive electrode settling section; 221. First chip connection area; 222. First bus connection area; 3. Negative electrode post; 31. Negative electrode protrusion; 32. Negative electrode settling section; 321. Second chip connection area; 322. Second bus connection area;

[0046] 4. Chip acquisition module; 5. Chip protective cover; 51. Top cover; 52. Fixing part; 53. Antenna mounting part; 6. Bonding aluminum wire; 7. Communication antenna; 8. Busbar element; 81. Primary welding busbar; 82. Secondary welding busbar. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of 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 some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0048] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this utility model. In addition, the terms "positive electrode," "negative electrode," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0050] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the negative electrode feature can mean that the positive and negative electrode features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "on top of" the negative electrode feature can mean that the positive electrode feature is directly above or diagonally above the negative electrode feature, or simply that the positive electrode feature is at a higher horizontal level than the negative electrode feature. "Below," "below," and "beneath" the negative electrode feature can mean that the positive electrode feature is directly below or diagonally below the negative electrode feature, or simply that the positive electrode feature is at a lower horizontal level than the negative electrode feature.

[0051] The present invention provides a single battery cell and a battery module. It should be noted that the battery model protected by the second aspect of the present invention is composed of multiple single battery cells protected by the first aspect of the present invention.

[0052] like Figures 1 to 9 As shown, a single battery cell according to the first aspect of the present invention includes a battery cell body 1 and a chip acquisition module 4.

[0053] The battery cell body 1 has a positive terminal 2 and a negative terminal 3 at its end. The chip acquisition module 4 is installed on the outer surface of the battery cell body 1 and is located between the positive terminal 2 and the negative terminal 3. The chip acquisition module 4 is electrically connected to the positive terminal 2 and the negative terminal 3 respectively.

[0054] For the single-cell battery provided in this utility model, the cell body 1 is responsible for storing and releasing electrical energy. The positive terminal 2 and the negative terminal 3 are two electrical contact points located at the ends of the cell body 1. The positive terminal 2 is used to connect to the positive terminal of an external circuit, while the negative terminal 3 is used to connect to the negative terminal of an external circuit. The chip acquisition module 4 is mounted on the outer surface of the cell body 1 and located between the positive terminal 2 and the negative terminal 3. This module is electrically connected to both the positive and negative terminals.

[0055] As a core component, the chip acquisition module 4's main function is to monitor and collect data on the battery cell's status. Through its electrical connection to the positive terminal 2 and the negative terminal 3, it can acquire key parameters such as the cell's voltage and temperature in real time. This data can be used to assess the cell's health, remaining lifespan, and previous usage history, thus providing necessary information for subsequent reuse.

[0056] Specifically, the working process of a single battery cell based on the chip acquisition module 4 is as follows: First, when the single battery cell is first assembled into the battery module, the chip acquisition module 4 automatically establishes an electrical connection with the positive terminal 2 and the negative terminal 3. Once the cell starts working (charging or discharging), the chip acquisition module 4 continuously monitors the cell's operating status, including but not limited to parameters such as voltage and temperature. The collected data is processed and stored internally by the chip acquisition module 4. When necessary, this data can be transmitted to external devices or systems (such as a BMS management system) through an integrated communication interface (such as contactless near-field communication) for further analysis and decision-making. Based on the detailed historical data provided by the chip acquisition module 4, it is possible to more accurately determine whether the cell is suitable for reuse. If it is decided to continue using the cell, its configuration and management in new application scenarios can be optimized based on this data.

[0057] In summary, the single-cell battery based on this utility model not only realizes the basic energy storage and release functions, but also enhances its ability to perceive its own status through the integrated chip acquisition module 4, making the management and maintenance throughout the entire life cycle more intelligent and efficient.

[0058] In related technologies, most existing battery cells are not designed with integrated data collection modules capable of recording usage history, health status, and other information. This necessitates extensive testing and evaluation of each cell before reuse to determine its suitability, increasing both cost and time.

[0059] Therefore, in order to solve the technical defects existing in the above-mentioned related technologies, this utility model provides a single cell. By setting a chip acquisition module 4 on each single cell that makes up the battery module, it is helpful to trace the usage data of the cell over time, making the cascade utilization more reliable. It can also reduce some of the later testing and evaluation work and improve the recycling efficiency.

[0060] Furthermore, compared to related technologies, the single-cell battery of this invention has at least the following advantages: the chip acquisition module 4 integrated on the battery cell can record and store key data such as the battery cell's health status, remaining lifespan, and usage history. This allows for quick and accurate assessment of the battery cell's condition during secondary utilization by consulting this information, reducing unnecessary testing and screening work, and improving the efficiency and reliability of the recycling process.

[0061] like Figure 2 and Figure 3 As shown, according to some embodiments of this utility model, the positive electrode post 2 includes a positive electrode protrusion 21 and a positive electrode recessed portion 22, with the height of the positive electrode protrusion 21 being greater than the height of the positive electrode recessed portion 22. The negative electrode post 3 includes a negative electrode protrusion 31 and a negative electrode recessed portion 32, with the height of the negative electrode protrusion 31 being greater than the height of the negative electrode recessed portion 32. The chip acquisition module 4 is electrically connected to both the positive electrode recessed portion 22 and the negative electrode recessed portion 32.

[0062] In this embodiment, the positive electrode protrusion 21 is the higher part of the positive electrode post 2, mainly used to establish electrical connections with other components (such as connectors or other cells in the battery management system). The positive electrode recess 22 is located below the positive electrode protrusion 21, and its height is lower than that of the positive electrode protrusion 21. This area can be used not only to establish electrical connections with other individual cells, but also to establish electrical connections with the chip acquisition module 4.

[0063] The negative electrode protrusion 31 has a structure similar to the positive electrode post 2, serving as the higher part of the negative electrode post 3 for electrical connection. Similarly, the negative electrode recess 32 is the lower part of the negative electrode post 3, and its function is similar to that of the positive electrode recess 22. It can be used not only to establish electrical connections with other individual battery cells, but also to make electrical connections with the chip acquisition module 4.

[0064] It is understood that in this embodiment, the recessed portion (i.e., the positive electrode recessed portion 22 and the negative electrode recessed portion 32) has two functions. The first function is to make an electrical connection with the chip acquisition module 4. Specifically, on the one hand, by connecting the chip acquisition module 4 to the recessed portion instead of directly connecting it to the protrusion, interference with the main current path can be avoided, ensuring the stability and efficiency of the main circuit. On the other hand, since the chip acquisition module 4 is connected to the relatively low recessed portion, this helps to reduce the risk of external physical damage, and also makes it easy to install a protective cover to further protect the chip and related electronic components from environmental factors.

[0065] The second function of the recessed portion is to establish electrical connections with other individual battery cells. At the same time, since the protrusions of the poles (i.e., the positive pole protrusion 21 and the negative pole protrusion 31) can also be used to establish electrical connections with other individual battery cells, the poles of the individual battery cells of this invention can support multiple welding operations. That is, the convex pole design of this invention allows for multiple welding operations at the same position. This not only improves the flexibility of the initial assembly, but also provides convenience for subsequent cascade utilization and ensures good electrical contact performance.

[0066] For example, during initial use, the busbar element 8 between multiple individual cells can be initially welded at the recessed section. When the battery module needs to be reused, the busbar element 8 after the first weld can be cut off at the central expansion arch, thus separating the individual cells from the entire battery module. Then, based on the cell data read from the chip acquisition module 4, the cells are re-selected and combined, and a second weld is performed to form a new reuse module. At this point, the busbar element 8 required for the second weld is welded to the protrusion, completing the assembly of the reuse battery module. This method has lower requirements for the stacking tolerances of the battery modules and is easier to weld.

[0067] like Figure 2 and Figure 3 As shown, according to some embodiments of the present invention, the positive electrode settling section 22 includes a first chip connection area 221, which is located on the side of the positive electrode protrusion 21 facing the negative electrode post 3; the negative electrode settling section 32 includes a second chip connection area 321, which is located on the side of the negative electrode protrusion 31 facing the positive electrode post 2. The chip acquisition module 4 is electrically connected to the first chip connection area 221 and the second chip connection area 321 respectively.

[0068] In this embodiment, the first chip connection area 221 is located on the side of the positive electrode protrusion 21 facing the negative electrode post 3. This location helps optimize the internal spatial layout of the battery cell and ensures that the chip acquisition module 4 can easily establish an electrical connection with it. The same design concept is applied to the negative electrode recess 32, which aims to simplify the installation and connection process of the chip acquisition module 4.

[0069] The chip acquisition module 4 is electrically connected to the first chip connection area 221 of the positive electrode settling section 22 and the second chip connection area 321 of the negative electrode settling section 32, respectively. This design not only avoids interference with the main current path, but also provides a more stable and reliable electrical connection point for the chip acquisition module 4.

[0070] In this way, by setting a specific chip connection area in the recessed section, the internal space layout of the battery cell is made more compact and reasonable, without affecting the design of the main current path. At the same time, since the chip acquisition module 4 is connected to the specially designed chip connection area, rather than directly to the protrusion, the risk of external physical damage can be effectively reduced, and the possibility of failure due to accidental short circuits can be lowered.

[0071] In addition, by precisely designing the position of the chip connection area, the chip acquisition module 4 is able to stably and accurately acquire the working status information of the battery cell (such as voltage, temperature, etc.), thereby improving the reliability and performance of the overall system.

[0072] In summary, this utility model achieves effective monitoring of the battery cell's working status by setting dedicated chip connection areas in the positive and negative electrode settling sections 32 and electrically connecting the chip acquisition module 4 to these areas. At the same time, it optimizes the internal structural design of the battery cell, enhancing system safety and ease of operation.

[0073] like Figure 1 and Figure 3 As shown, in some specific embodiments, the chip acquisition module 4 is electrically connected to the first chip connection area 221 and the second chip connection area 321 respectively through the bonding aluminum wire 6, thereby supplying power to the chip acquisition module 4 and realizing the voltage acquisition of the individual battery cell.

[0074] In addition, the chip acquisition module 4 also has a cell balancing function. The bonding aluminum wire 6 has a limited current carrying capacity and can act as a fuse. When the acquisition module fails, it can provide fuse protection.

[0075] Furthermore, the chip acquisition module 4 also has a balanced management function. In addition, the chip module also has the function of recording and storing data such as the health status, remaining lifespan, previous usage history and faults of the battery cells. It can also upload information to the cloud platform according to the battery "passport" number. In short, the historical data of the required battery cells can be queried through the battery "passport".

[0076] In related technologies, traditional battery cell structures are often not designed with subsequent disassembly and reuse in mind, making it difficult to effectively disassemble battery modules or packs into individual cells for secondary use. For example, existing cells typically provide only one fixed electrical connection point (such as a terminal post), which limits their flexibility in different application scenarios. Understandably, the aforementioned existing structures require additional work to separate the cells and may face compatibility issues during reassembly, increasing the complexity and cost of secondary use.

[0077] Therefore, in order to address the technical deficiencies existing in the aforementioned related technologies, such as Figure 3 As shown, in some embodiments of this utility model, the positive electrode settling portion 22 further includes two first busbar connection areas 222, which are located on opposite sides of the positive electrode protrusion 21 and the first chip connection area 221, respectively. The first busbar connection areas 222 are used to connect the busbar element 8.

[0078] The negative electrode settling section 32 includes two second bus connection areas 322, which are located on opposite sides of the negative electrode protrusion 31 and the second chip connection area 321, respectively. The second bus connection areas 322 are used to connect the bus element 8.

[0079] like Figure 3 As shown, the first bus connection area 222 and the second bus connection area 322 are both used for the first welding of the bus element 8, while the positive electrode recess 22 and the negative electrode recess 32 are used for the second welding of the bus element 8.

[0080] In the above embodiment, the positive electrode protrusion 21 is coaxially arranged with the first chip connection area 221, and the two first bus connection areas 222 are located on opposite sides (e.g., left and right sides) of the positive electrode protrusion 21 and the first chip connection area 221, respectively. It can be understood that the first bus connection areas 222 are mainly used to connect the bus element 8 (such as aluminum bar) during the initial soldering to realize the electrical connection between multiple individual battery cells.

[0081] The structure of the negative terminal 3 is similar to that of the positive terminal 2, and the second bus connection area 322 of the negative terminal 3 is also used to connect the bus element 8 during the initial welding to realize the electrical connection between multiple individual cells.

[0082] As can be seen from the above, the single cell of this utility model can be welded multiple times. For example, in the first welding, that is, when it is used for the first time, the bus element 8 (such as aluminum bar) will be welded through the first bus connection area 222 or the second bus connection area 322, which ensures the stability and reliability of the electrical connection during the initial assembly.

[0083] In the second welding process, i.e. when reuse is required, the original busbar element 8 is removed or cut off, and then a new busbar element 8 is welded to the positive electrode protrusion 21 or the negative electrode protrusion 31. Therefore, the above design of this embodiment allows for multiple welding operations on the electrode post, improving the flexibility of assembly and disassembly.

[0084] like Figure 9 As shown, the specific workflow of the battery module based on the above-mentioned single cell is as follows:

[0085] (1) Initial Assembly: During the initial assembly process, the busbar element 8 (i.e., the first-welding busbar 81) required for the first welding is welded between two adjacent individual cells. For example, the two sides of the first-welding busbar 81 are welded to the first busbar connection area 222 of each of the two adjacent individual cells, or the two sides of the first-welding busbar 81 are welded to the second busbar connection area 322 of each of the two adjacent individual cells. This step ensures that a stable electrical connection can be formed between multiple individual cells to constitute a battery module.

[0086] (2) Preparation for secondary use: When it is necessary to reuse a single battery cell, the status data of the battery cell is first read from the chip acquisition module 4 to assess its health status and suitability. Then, the original bus element 8 (i.e., the first-time welded bus element 81) is removed from the first bus connection area 222 or the second bus connection area 322, and the battery cell combination is reconfigured as needed.

[0087] (3) Secondary welding: For the newly assembled cascade utilization module, the new bus element 8 (i.e., the secondary welding bus element 82) will be welded on the positive electrode protrusion 21 or negative electrode protrusion 31 of each of the two adjacent individual cells. This design not only simplifies the disassembly process, but also ensures the electrical connection performance after secondary welding.

[0088] In summary, by setting up the bus connection area and the protrusion, the battery cells can be initially and then welded at different locations, which greatly enhances the system's flexibility and adapts to different application scenarios.

[0089] Furthermore, by clearly distinguishing the locations of the initial and secondary welding, the disassembly and reassembly process is simplified, reducing unnecessary complexity and waste. In addition, by rationally arranging the welding points, stability and efficiency during initial assembly are ensured, and a reliable solution is provided for subsequent maintenance and reuse, thereby improving the overall system reliability and performance.

[0090] like Figure 4 As shown, according to some embodiments of the present invention, the height of the positive electrode protrusion 21 is equal to the height of the negative electrode protrusion 31; and / or, the height of the positive electrode settling portion 22 is equal to the height of the negative electrode settling portion 32.

[0091] This consistent height of the positive and negative terminals helps improve the assembly precision of the cells within the battery module, ensuring stable and reliable electrical connections between each cell and reducing issues such as poor contact. Simultaneously, the consistent height of the mounting platform facilitates more efficient arrangement of internal components; for example, the installation position of the chip acquisition module 4 is more flexible, and it also provides more convenient operating conditions for secondary soldering. The symmetrical design simplifies mold design and manufacturing processes, reducing production costs. Furthermore, the uniform height standard facilitates the operation of automated production lines, improving production efficiency.

[0092] It should also be noted that, for the individual battery cells in this embodiment, when they are used in a tiered manner, the disassembly and reassembly process is smoother because the dimensions of each component are consistent, which reduces the difficulty of operation and improves the reuse rate.

[0093] According to some embodiments of this utility model, a temperature sensor is integrated into the chip acquisition module 4; the chip acquisition module 4 has a hollow structure so that a heat-conducting space is formed between the temperature sensor and the battery cell body 1, and the heat-conducting space is filled with heat-conducting material.

[0094] In this embodiment, a temperature sensor is used to monitor the operating temperature of the battery cell in real time, which helps to detect abnormalities such as overheating in a timely manner, thereby ensuring the safe operation of the battery cell and extending its service life. Meanwhile, a hollow structure is provided at the bottom of the chip acquisition module 4, allowing the temperature sensor to directly contact or approach the battery cell body 1. This hollow area forms a heat-conducting space; by filling it with a thermally conductive material (such as thermally conductive silicone), the heat from the battery cell body 1 can be effectively conducted to the temperature sensor, ensuring the accuracy and response speed of temperature measurement.

[0095] In this way, on the one hand, by directly placing the temperature sensor on the main body 1 of the battery cell and enhancing the heat transfer efficiency with thermally conductive materials, the actual operating temperature of the battery cell can be reflected more accurately, avoiding errors caused by indirect measurement. On the other hand, the hollow structure combined with the design of thermally conductive materials not only facilitates the acquisition of temperature data, but also plays a certain role in heat dissipation, helping to maintain the battery cell within a relatively ideal temperature range, thereby improving its performance and lifespan.

[0096] In summary, by integrating a temperature sensor into the chip acquisition module 4 and employing a hollow structure and thermally conductive material design, this invention significantly improves the accuracy and response speed of temperature monitoring, and enhances the system's safety and heat dissipation performance.

[0097] like Figures 3 to 5 As shown, according to some embodiments of the present invention, the single cell also includes a chip protective cover 5. The chip protective cover 5 is installed on the outer surface of the cell body 1 and covers the chip acquisition module 4. The chip protective cover 5 is located between the positive terminal 2 and the negative terminal 3 to ensure that it does not interfere with the main current path.

[0098] In this way, the chip protective cover 5 provides additional physical protection for the chip acquisition module 4, preventing it from being affected by external environmental factors (such as impact, moisture, dust, etc.), thus extending the service life of the chip acquisition module 4. Furthermore, by providing a sealed protective space, it reduces the potential damage to the internal electronic components of the chip acquisition module 4 from the external environment, improving the reliability of the entire system.

[0099] In some specific embodiments, the chip protective cover 5 is firmly fixed to the outer surface of the battery cell body 1 by means of snap-fit ​​or adhesive, ensuring that it will not loosen or fall off during use. In this way, the design of the protective cover makes the chip acquisition module 4 easier to install and remove, facilitates subsequent maintenance and repair work, and also simplifies the processing steps in the cascade utilization process.

[0100] like Figure 5 As shown, in some specific embodiments, the chip protective cover 5 includes a top cover portion 51 and a fixing portion 52 located on both sides of the top cover portion 51. The fixing portion 52 is fixed on the outer surface of the battery cell body 1. The top cover portion 51 and the battery cell body 1 define a closed protective space, and the chip acquisition module 4 is located in the protective space.

[0101] It is understood that the top cover 51 is the main covering part of the chip protective cover 5, located above the chip acquisition module 4, forming a closed space to protect the chip acquisition module 4 from the influence of the external environment. The fixing parts 52 are located on both sides of the top cover 51, used to securely install the protective cover onto the outer surface of the battery cell body 1. Typically, these fixing parts 52 can be connected to the battery cell body 1 by snap-fit ​​or adhesive, ensuring that the chip protective cover 5 will not easily loosen or fall off.

[0102] The enclosed protective space formed between the top cover 51 and the main body 1 of the battery cell completely encloses the chip acquisition module 4, preventing dust, moisture, and other substances that may damage electronic components from entering, thus providing comprehensive physical protection. The chip acquisition module 4 is housed within this enclosed protective space, ensuring it can operate in a stable and safe environment, unaffected by external factors.

[0103] In this way, by providing a protective cover containing a top cover 51 and a fixing part 52 on the outside of the chip acquisition module 4, the protection of the chip acquisition module 4 is significantly enhanced, and the reliability and durability of the system are improved.

[0104] like Figures 3 to 5 As shown, the top cover 51 extends out at both ends and covers the first chip connection area 221 and the second chip connection area 321, thereby sealing and protecting the connector (e.g., bonding aluminum wire 6) between the chip acquisition module 4 and the electrode post.

[0105] like Figure 3 and Figure 6 As shown, according to some embodiments of the present invention, the chip acquisition module 4 is a near-field communication chip acquisition module 4, and an antenna mounting part 53 is provided on the outer surface of the chip protective cover 5. The antenna mounting part 53 is used to install a communication antenna 7 for near-field communication with the chip acquisition module 4.

[0106] In this embodiment, the chip acquisition module 4 not only has data acquisition and storage functions, but also integrates near-field communication (NFC) capabilities. Therefore, the chip acquisition module 4 can exchange data with other devices (such as battery management systems (BMS), mobile terminals, etc.) through near-field wireless communication technology. It is understood that near-field communication is a standard communication protocol widely used in various electronic devices; therefore, using the NFC chip acquisition module 4 can improve system compatibility and interoperability, facilitating integration into existing battery management systems or other monitoring platforms.

[0107] A dedicated antenna mounting section 53 is provided on the outer surface of the chip protective cover 5. This location is chosen to ensure that the antenna can effectively transmit and receive signals while avoiding interference from internal components of the battery cell body 1. The antenna mounting section 53 is used to install the communication antenna 7, which is compatible with the chip acquisition module 4. The communication antenna 7 helps to enhance signal strength and stability, ensuring the reliability of data transmission.

[0108] In this way, NFC technology allows for fast and convenient data exchange between the chip acquisition module 4 and external devices without the need for a physical connection. By optimizing the antenna design and installation location, the speed and accuracy of data transmission can be significantly improved. Furthermore, because it supports contactless communication, maintenance personnel can easily read the status information of the battery cells using handheld devices without directly touching or disassembling the cells, greatly simplifying the process of daily maintenance and troubleshooting.

[0109] Furthermore, even in high humidity or dusty environments, the enclosed protective space and the carefully designed antenna mounting section 53 ensure the effective operation of the communication antenna 7, ensuring that data transmission is not affected by the external environment.

[0110] For example, the communication antenna 7 is a dual-core communication antenna 7, and the antenna mounting part 53 is a dual-core communication line clamp, thereby realizing functional integration and reuse.

[0111] According to some embodiments of this utility model, the battery cell body adopts a thermoelectric separation design, and the safety valve is set on the opposite side of the positive and negative terminals; the insulation protection of the battery cell shell is preferably achieved by insulating powder spraying to increase the insulation withstand voltage of the battery cell, and the insulating spraying material is more firmly bonded to the shell, with stronger adhesion than the blue film, thereby reducing the occurrence of damage to the blue film of the battery cell due to disassembly of the battery module, and realizing secondary insulation protection.

[0112] like Figures 6 to 9 As shown, the battery module according to a second aspect embodiment of the present invention includes at least two individual battery cells as described in the first aspect embodiment of the present invention. All individual battery cells are arranged sequentially and connected by a bus element 8.

[0113] like Figure 7 and Figure 8As shown, in one specific embodiment, when the battery module composed of individual cells integrated with the chip acquisition module 4 is used for the first time, the connecting aluminum bars between adjacent individual cells are welded at the positive electrode recess 22 or the negative electrode recess 32. When the battery module is reused, the dual-core communication antenna 7 is simply removed, and the primary welding aluminum bar is cut off from the middle expansion arch to separate the individual cells from the module. Based on the cell data read from the chip acquisition module 4, the cells are re-selected and combined, and then re-welded to form a new reuse module. The connecting aluminum bars required for the secondary welding are welded to the positive electrode protrusion 21 or the negative electrode protrusion 31, which has lower requirements for module stacking tolerances and is easier to weld. Finally, the dual-core communication antenna 7 is re-inserted to complete the assembly of the reuse battery module.

[0114] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A single battery cell, characterized in that, include: The battery cell body has a positive terminal and a negative terminal at its ends; A chip acquisition module is installed on the outer surface of the battery cell body and located between the positive terminal and the negative terminal. The chip acquisition module is electrically connected to the positive terminal and the negative terminal respectively.

2. The single-cell battery according to claim 1, characterized in that, The positive electrode post includes a positive electrode protrusion and a positive electrode settling portion, wherein the height of the positive electrode protrusion is greater than the height of the positive electrode settling portion; The negative electrode post includes a negative electrode protrusion and a negative electrode recess, wherein the height of the negative electrode protrusion is greater than the height of the negative electrode recess. The chip acquisition module is electrically connected to the positive electrode settling section and the negative electrode settling section, respectively.

3. The single-cell battery according to claim 2, characterized in that, The positive electrode settling section includes a first chip connection area, which is located on the side of the positive electrode protrusion facing the negative electrode post; the negative electrode settling section includes a second chip connection area, which is located on the side of the negative electrode protrusion facing the positive electrode post. The chip acquisition module is electrically connected to the first chip connection area and the second chip connection area, respectively.

4. The single-cell battery according to claim 3, characterized in that, The positive electrode settling section also includes two first busbar connection areas, which are located on opposite sides of the positive electrode protrusion and the first chip connection area, respectively. The first busbar connection areas are used to connect busbar components. The negative electrode recess includes two second busbar connection areas, which are located on opposite sides of the negative electrode protrusion and the second chip connection area, respectively. The second busbar connection areas are used to connect busbar components. The first and second bus connection areas are used for the first welding of the bus element, while the positive and negative electrode recesses are used for the second welding of the bus element.

5. The single-cell battery according to claim 2, characterized in that, The height of the positive electrode protrusion is equal to the height of the negative electrode protrusion; and / or, the height of the positive electrode settling portion is equal to the height of the negative electrode settling portion.

6. The single-cell battery according to claim 1, characterized in that, The chip acquisition module integrates a temperature sensor; The chip acquisition module has a hollow structure to form a thermally conductive space between the temperature sensor and the battery cell body, and the thermally conductive space is filled with thermally conductive material.

7. The single-cell battery according to any one of claims 2 to 6, characterized in that, Also includes: A chip protective cover is installed on the outer surface of the battery cell body and covers the chip acquisition module. The chip protective cover is located between the positive terminal and the negative terminal.

8. The single-cell battery according to claim 7, characterized in that, The chip protective cover includes a top cover and fixing parts located on both sides of the top cover. The fixing parts are fixed to the outer surface of the battery cell body. The top cover and the battery cell body define a closed protective space, and the chip acquisition module is located within the protective space.

9. The single-cell battery according to claim 7, characterized in that, The chip acquisition module is a near-field communication chip acquisition module. An antenna mounting part is provided on the outer surface of the chip protective cover. The antenna mounting part is used to install a communication antenna that enables near-field communication with the chip acquisition module.

10. A battery module, characterized in that, include: At least two individual battery cells as described in any one of claims 1 to 9, wherein all said individual battery cells are arranged sequentially and connected by a bus element.

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