Adaptive smart lithium-ion battery and use method
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SHANGHAI GUOXUAN NEW ENERGY CO LTD
- Filing Date
- 2025-10-10
- Publication Date
- 2026-06-11
Smart Images
Figure CN2025126832_11062026_PF_FP_ABST
Abstract
Description
An adaptive smart lithium-ion battery and its usage method
[0001] This application claims priority to the patent application filed on December 3, 2024, with application number 202411762796.4 and entitled "An Adaptive Smart Lithium-ion Battery and a Method of Using It". Technical Field
[0002] This application relates to the field of lithium battery technology, and in particular to an adaptive smart lithium-ion battery and a method of using it. Background Technology
[0003] Lithium-ion batteries are batteries that use lithium ions as the primary carrier and are widely used in consumer electronics, energy storage systems, and electric vehicles. With their high energy density, long cycle life, and low self-discharge rate, lithium-ion batteries have stood out among numerous energy storage technologies. The core structure of a lithium battery consists of a positive electrode, a negative electrode, an electrolyte, and a separator. Its working principle involves the intercalation and deintercalation of lithium ions in the positive and negative electrode materials, achieving the conversion between electrical energy and chemical energy. This highly efficient energy conversion mechanism provides lithium batteries with superior performance, making them an important component of the modern energy revolution.
[0004] In the electric vehicle sector, the high energy density of lithium batteries enables electric vehicles to achieve longer driving ranges within limited battery space, while their efficient energy output performance meets the stringent requirements of automotive power response. These advantages make lithium batteries a key driving force for the development of the electric vehicle industry.
[0005] However, lithium batteries may experience localized overheating when operating at high discharge rates or in extreme environments, increasing the risk of thermal runaway. Furthermore, in the event of a collision or impact, lithium batteries may experience internal short circuits due to external compression or puncture, leading to electrolyte leakage, cell damage, or even combustion. This is especially true in large battery packs composed of multiple battery cells in electric vehicles; a problem in one cell could trigger a chain reaction, threatening the safety of the entire battery pack.
[0006] The stress and local displacement changes within the battery's internal winding core also affect battery life. Current technologies, due to battery size limitations, rely on external measurements of parameters like voltage, current, and temperature for analysis, calculation, and control. This prevents the accurate detection of the internal winding core's true condition, leading to unavoidable errors in judgment, evaluation, and control, and even misjudgments of safety risks. Furthermore, lithium-ion batteries generate a large amount of gas after use. This gas creates significant internal pressure within the battery casing, causing substantial expansion and impacting battery life and safety. Existing technologies incorporate explosion-proof valves. When the gas pressure reaches a certain level (typically 0.5 MPa to 1.1 MPa), the valve opens to release the gas, marking the end of the battery's lifespan. Simultaneously, the stress within the battery's winding core represents its internal expansion pressure. As the number of cycles increases, this pressure rises, contributing to the risk of thermal runaway and changes in cycle life. When a battery experiences thermal runaway or other risks, it releases a large amount of heat in a short period of time, with the temperature of the internal ejected material reaching thousands of degrees Celsius, often accompanied by fire and explosion. Currently, several cases of battery car fires and explosions and fires in large and small energy storage power stations have been reported every year, all caused by battery safety issues, seriously threatening people's lives and property safety and the development of battery technology.
[0007] Therefore, achieving intelligent control of lithium batteries, avoiding safety accidents caused by thermal runaway or short circuits, and extending battery life have become urgent technical challenges. Summary of the Invention
[0008] The main objective of this application is to provide an adaptive smart lithium-ion battery and a method of using it, which aims to realize the intelligence of lithium batteries and improve their safety, thereby avoiding safety accidents caused by thermal runaway or short circuits.
[0009] To achieve the above objectives, this application proposes an adaptive smart lithium-ion battery, comprising:
[0010] The battery body has a positive terminal and a negative terminal;
[0011] The detection component is located inside the battery body and is used to detect at least one of the following parameters: core temperature, core stress value, core local displacement parameter, internal air pressure of the casing, and internal gas composition of the casing.
[0012] A switching element, connected between the positive terminal and the positive tab of the winding core and / or between the negative terminal and the negative tab;
[0013] The central processing unit, connected to the battery body, can turn the switching device on or off based on the detection results of the detection device.
[0014] By installing detection devices inside the battery body, key operating parameters of the winding core can be acquired in real time, providing a comprehensive understanding of the battery's internal state. Data analysis and control of switching devices by the central processing unit enable rapid power-off measures in case of battery anomalies, effectively preventing safety hazards such as thermal runaway and short circuits. Furthermore, the control of the switching devices allows for self-isolation of individual battery cells, ensuring the continued normal operation of other batteries. This enhances lithium battery safety and prevents accidents caused by thermal runaway or short circuits.
[0015] In one embodiment of this application, the battery body includes:
[0016] The shell, positive electrode post and negative electrode post are disposed on the shell, and the electrolyte is contained inside the shell;
[0017] The core is located inside the housing.
[0018] The high-strength enclosure provides a stable and safe working environment for the battery core. The uniform distribution of the electrolyte ensures efficient ion conduction, enhancing the battery's energy conversion capability. The positive and negative terminals are located on the outside of the enclosure, making it easy to connect the battery to external circuits. The structure is simple and easy to implement.
[0019] In one embodiment of this application, an electronic explosion-proof valve is provided on the housing, and the central processing unit can open or close the electronic explosion-proof valve according to the detection result of the detection component.
[0020] By installing an electronic explosion-proof valve on the casing and controlling it through a central processing unit, intelligent management of the internal gas pressure of the battery can be achieved. When the detector detects an abnormal signal, the central processing unit can respond quickly, opening the electronic explosion-proof valve to promptly release the negative reaction gas, reduce the internal gas pressure, extend the battery's lifespan, and prevent the casing from bulging or bursting due to excessive internal pressure.
[0021] In one embodiment of this application, the core is further provided with a deformable core box that can absorb or release heat from the core.
[0022] By incorporating a deformable core box at the center of the battery core, heat can be effectively regulated during battery operation, preventing performance degradation or safety hazards caused by excessively high or low temperatures. Simultaneously, the deformable core box, utilizing its deformation function, effectively absorbs the expansion of the core during charging and discharging, effectively balancing the internal stress of the cell. Combined with the heat absorption and release functions of the deformable core box, this effectively extends battery life and prevents aging or structural damage to internal battery materials caused by excessive temperature and internal stress fluctuations, thereby improving battery cycle performance and safety.
[0023] In one embodiment of this application, the deformable core box is provided with at least one support bar that can support the deformable core box to improve its support strength.
[0024] The addition of support strips enhances the structural strength of the deformable cell, enabling it to withstand greater external forces and internal pressures. This prevents deformation or damage to the deformable cell under high temperatures and high-rate discharge conditions, thus ensuring the stable operation of the battery's thermal regulation function. Simultaneously, the support strip design improves the durability of the deformable cell during long-term use, extending battery life and reducing battery failures caused by damage to the deformable cell.
[0025] In one embodiment of this application, the support strip is at least one of a straight line, an S-shape, or a zigzag shape. The straight support strip has a simple linear structure, is relatively long, and is arranged in a straight line. It is evenly distributed on the inner wall of the deformable core box to provide balanced support force. The straight support strip is suitable for deformable core box structures that are relatively regular and have relatively uniform stress. The straight support strip can be fixed to the inner wall of the deformable core box through integral molding, welding, bonding, or embedding, ensuring a stable connection between the support strip and the deformable core box. This allows the support strip to effectively distribute pressure from the inside and outside, enhancing the mechanical strength of the deformable core box. The straight support strip has a simple structure and low manufacturing cost.
[0026] The S-shaped support bar is a curved structure composed of multiple curved segments, resembling the letter "S". This shape allows the support bar to provide support while better adapting to the complex spatial layout inside the battery. The S-shaped support bar can form a relatively complex support network within the deformable cell, enhancing its stability in multiple directions. The S-shaped support bar can be connected to the inner wall of the deformable cell through integral molding, fasteners, or welding, ensuring it will not loosen or detach under thermal expansion and pressure changes. The curved design of the S-shaped support bar effectively disperses forces from all directions, improving the deformable cell's resistance to pressure and deformation.
[0027] The polygonal support bar is formed by connecting multiple straight segments sequentially, with an angle between adjacent segments. This design retains the simplicity of straight support bars while increasing flexibility and adaptability through multiple angles. The polygonal support bar can provide better support within limited space while reducing the risk of damage due to uneven pressure.
[0028] In one embodiment of this application, the deformable core box is provided with at least one pressure relief port. By providing pressure relief ports at the top and / or bottom of the deformable core box, the safety and stability of the deformable core box are improved. The design of the pressure relief port ensures that the deformable core box can release some pressure when the battery over-expands or the internal gas pressure is too high, reducing the risk of thermal runaway of the battery.
[0029] This application also discloses a method for using an adaptive smart lithium-ion battery, including the following steps:
[0030] Connect the positive and negative terminals of the adaptive smart lithium-ion battery to an external circuit.
[0031] The detection device monitors in real time at least one of the following parameters of the battery body: core temperature, core stress value, core local displacement parameter, internal air pressure, and internal gas composition.
[0032] The central processing unit determines whether the battery's operating status is abnormal based on the parameter values detected by the detection device;
[0033] When an abnormal condition is detected, the central processing unit controls the switching device to disconnect the connection between the positive terminal and the positive terminal tab of the winding core and / or the connection between the negative terminal and the negative terminal tab to protect the safety of the battery body; and / or when an abnormal condition is detected, the central processing unit controls the electronic explosion-proof valve to release the gas inside the battery, balance the internal and external gas pressure, and extend the battery life and protect the safety of the battery body.
[0034] After the detection parameters return to normal, the central processing unit can re-close the switching components and / or shut down the electronic explosion-proof valve to restore the battery to normal operating status.
[0035] By employing the above technical solution, key operating parameters of the battery core can be acquired in real time through the installation of detection devices inside the battery body, providing a comprehensive understanding of the battery's internal state. Data analysis and control of the switching devices by the central processing unit enable rapid power-off measures in case of battery abnormalities, effectively preventing safety hazards such as thermal runaway and short circuits. The switching devices also enable self-isolation of individual battery cells, ensuring the continued normal operation of other batteries. Furthermore, data analysis and control of the electronic explosion-proof valve by the central processing unit allow for the discharge of negative reaction gases, extending battery life and improving lithium battery safety, thus preventing safety accidents caused by thermal runaway or short circuits. Attached Figure Description
[0036] The present application will now be described in detail with reference to specific embodiments and accompanying drawings, wherein:
[0037] Figure 1 is a schematic diagram of the structure of the first embodiment of this application;
[0038] Figure 2 is a side sectional view of the first embodiment of this application;
[0039] Figure 3 is a bottom sectional view of the first embodiment of this application; 10, housing; 11, positive terminal post; 12, negative terminal post; 20, central processing unit; 30, switch; 40, detection component; 50, electronic explosion-proof valve; 60, core; 61, positive terminal tab; 62, negative terminal tab; 70, deformable core box; 71, support bar; 72, pressure relief port. Detailed Implementation
[0040] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the following specific embodiments are merely illustrative of this application and do not constitute a limitation thereof.
[0041] As shown in Figures 1 to 3, in order to achieve the above objectives, this application proposes an adaptive smart lithium-ion battery, comprising:
[0042] The battery body has a positive terminal 11 and a negative terminal 12;
[0043] The detection element 40 is disposed inside the battery body and is used to detect at least one of the following parameters of the battery body: core temperature, core stress value, core local displacement parameter, internal air pressure and internal gas composition.
[0044] Switch 30 is connected between the positive terminal 11 and the positive terminal tab 61 of the winding core 60 and / or between the negative terminal 12 and the negative terminal tab 62; and
[0045] The central processing unit 20 is connected to the battery body and can turn the switch 30 on or off based on the detection results of the detection unit 40.
[0046] Specifically, the battery body includes a positive electrode post 11 and a negative electrode post 12, which are used to connect the battery to an external circuit. The battery body also includes a core 60, which serves as the main energy storage location and is the substrate for the positive and negative electrode materials and electrochemical reactions.
[0047] The detection element 40 is installed inside the battery body to monitor key operating parameters of the battery body, including core temperature, core stress value, core local displacement parameters, internal air pressure of the casing, and internal gas composition. The detection element 40 can be a fiber optic sensor or other types of sensors. When the detection element 40 is a fiber optic sensor, it acquires real-time data by sensing physical changes in different parts inside and outside the core 60. The detection element 40 is directly connected to the central processing unit 20, and the detected parameters are uploaded to the central processing unit 20 via data transmission.
[0048] A switch 30 is installed between the positive terminal 11 and the positive electrode tab 61 of the winding core 60, and / or between the negative terminal 12 and the negative electrode tab 62. The switch 30 acts as a controller for the current path. By controlling the connection and disconnection of the positive terminal 11 and the negative terminal 12, the switch 30 achieves battery operation management and safety control. The switch 30 is electrically connected to the central processing unit 20, and its opening and closing states are entirely controlled by the commands of the central processing unit 20.
[0049] The electronic explosion-proof valve 50 is installed on the battery housing and serves as a gas discharge valve, controlled by the central processing unit 20.
[0050] The central processing unit 20 is fixed to the battery body and plays the role of information acquisition, processing, and execution of instructions. The central processing unit 20 receives detection signals from the detection element 40, analyzes key parameters such as temperature, stress, displacement of the core 60 and internal air pressure and gas composition of the battery in real time, and determines whether there are potential safety risks based on preset logic conditions.
[0051] When the parameters reported by the detection unit 40 are abnormal, the central processing unit 20 sends a command to the switching unit 30 to open or close the current path between the positive terminal 11 and the positive terminal tab 61 of the winding core 60 and / or the current path between the negative terminal 12 and the negative terminal tab 62; or when the parameters reported by the detection unit 40 are abnormal, the central processing unit 20 sends a command to the electronic explosion-proof valve 50 to open or close the electronic explosion-proof valve 50 to discharge negative reaction gas and balance the internal and external gas pressure, so as to extend the battery life and protect the battery safety.
[0052] The central processing unit 20 can also be connected to a battery management system or other external control devices to achieve more comprehensive battery status management. The central processing unit 20 can also be connected to the positive terminal 11 and / or the negative terminal 12, the switching element 30 to obtain operating power, or connected to an external circuit and / or an internal power supply to obtain operating power.
[0053] By employing the above technical solution, a detection device 40 is installed inside the battery body to acquire key operating parameters of the winding core 60 in real time, providing a comprehensive understanding of the battery's internal state. The central processing unit 20 analyzes the data and controls the switching device 30, enabling rapid power-off measures in case of battery abnormalities, effectively preventing safety hazards such as thermal runaway and short circuits. The switching device 30 controls the self-isolation function of individual battery cells, ensuring the continued normal operation of other batteries. The central processing unit 20 controls the opening and closing of the electronic explosion-proof valve 50 to expel negative reaction gases, extending battery life. Overall, this achieves intelligent lithium battery operation and improves lithium battery safety, preventing safety accidents caused by thermal runaway or short circuits.
[0054] In one embodiment of this application, the battery body includes:
[0055] The housing 10, the positive electrode post 11 and the negative electrode post 12 are disposed on the housing 10, and the electrolyte is disposed inside the housing 10; the core 60 is disposed inside the housing 10.
[0056] Specifically, the housing 10 protects and houses the internal structure, serving as a crucial support and encapsulation component for the battery body. The positive electrode post 11 and the negative electrode post 12 are mounted on the housing 10 and extend into its interior. The positive electrode post 11 is aligned with and connected to the positive electrode tab 61 of the winding core 60, while the negative electrode post 12 is aligned with and connected to the negative electrode tab 62 of the winding core 60. The interior of the housing 10 is filled with electrolyte, which covers and permeates the winding core 60, providing the necessary ion-conducting medium for the electrochemical reactions within the battery. The housing 10 is made of a high-strength material, such as steel, effectively preventing electrolyte leakage and providing a safe working environment for the winding core 60.
[0057] The core 60, located inside the casing 10, is the core energy storage component of the battery. It comprises a stacked structure of positive and negative electrode materials, separated by a separator to prevent short circuits and ensure free ion migration. The core 60 fits tightly within the casing 10. The positive electrode tab 61 of the core 60 is conductively connected to the positive electrode post 11, and the negative electrode tab 62 is conductively connected to the negative electrode post 12, forming a complete current loop. The core 60 is typically designed as a spiral wound or stacked structure to optimize its volume utilization and energy density.
[0058] The switch 30 is installed between the positive terminal 11 and the positive electrode tab 61 of the winding core 60 and / or between the negative terminal 12 and the negative electrode tab 62, serving as a controller for the current path. The switch 30 controls the connection and disconnection of the positive terminal 11 and the negative terminal 12, thereby realizing the operation management and safety control of the battery.
[0059] The housing 10 and the core 60 form a complete closed system. The electrolyte inside the housing 10 is in full contact with the positive and negative electrode materials of the core 60, supporting the charging and discharging process of the battery. The positive electrode post 11 and the negative electrode post 12 achieve a reliable connection between the internal and external circuits of the battery through their fixation on the housing 10, ensuring the stability of the electrical performance of the battery body.
[0060] By adopting the above technical solution, the high-strength encapsulation of the casing 10 provides a stable and safe working environment for the core 60. The uniform distribution of the electrolyte ensures the efficiency of ion conduction and improves the energy conversion capability of the battery body. The positive electrode post 11 and the negative electrode post 12 are located on the outside of the casing 10, making it easy for the battery body to be connected to an external circuit. The structure is simple and easy to implement.
[0061] In one embodiment of this application, the housing 10 is provided with an electronic explosion-proof valve 50, and the central processing unit 20 can open or close the electronic explosion-proof valve 50 according to the detection result of the detection element 40.
[0062] Specifically, the electronic explosion-proof valve 50 is mounted on the housing 10, located at the top or side of the housing 10, to effectively release the gas pressure inside the housing 10. The electronic explosion-proof valve 50 forms a reliable sealing structure with the housing 10 through a sealing element, and remains closed by default to ensure the airtightness of the housing 10 and the stability of the internal electrolyte. The electronic explosion-proof valve 50 is electrically connected to the central processing unit 20, and its opening or closing is entirely determined by the control signal from the central processing unit 20.
[0063] The central processing unit 20 is fixed to the housing 10 and connected to the detection element 40 and the electronic explosion-proof valve 50 via signal transmission lines. The central processing unit 20 acquires key parameters inside the housing 10 in real time through the detection element 40, such as the temperature of the core 60, the stress of the core 60, the local displacement of the core 60, the gas pressure inside the housing 10, and the gas composition inside the housing 10, and analyzes and judges based on the data fed back by the detection element 40. When the internal parameters exceed a preset safety threshold, the central processing unit 20 sends a control signal to the electronic explosion-proof valve 50, instructing it to open to quickly release the pressure or gas inside the housing 10, extending battery life and preventing housing 10 rupture or other hazards caused by gas accumulation. When the internal parameters meet the preset safety value, the central processing unit 20 sends a control signal to the electronic explosion-proof valve 50, instructing it to close to achieve a sealed housing 10. It is conceivable that, to ensure the battery pack is protected from foreign object intrusion, the housing 10 is in a positive pressure environment when the electronic explosion-proof valve 50 is closed.
[0064] By adopting the above technical solution, and by installing an electronic explosion-proof valve 50 on the housing 10 and controlling it with the central processing unit 20, intelligent management of the internal gas pressure of the battery can be achieved. When the detection element 40 detects an abnormal signal, the central processing unit 20 can respond quickly and release the internal gas pressure in a timely manner by opening the electronic explosion-proof valve 50, thus preventing the housing 10 from bulging or bursting due to excessive internal pressure.
[0065] In one embodiment of this application, the core 60 is further provided with a deformable core box 70 that can absorb or release heat from the core 60.
[0066] Specifically, the deformable core box 70 is located at the center of the wound core 60 in the battery body, and its function is to regulate the temperature of the lithium-ion battery by absorbing or releasing heat. The deformable core box 70 is made of heat-sensitive materials, such as phase change materials and thermally conductive plastics, and can incorporate a solid-liquid-gas three-phase change material. This effectively controls the temperature of the battery body during charging and discharging, especially during high-power discharge or charging, avoiding safety risks or performance degradation caused by excessive temperature. The deformable core box 70 is in contact with the wound core 60 in the battery body and absorbs or releases heat from the wound core 60 through its built-in heat exchange or heat conduction function.
[0067] The working principle of the deformable core box 70 is as follows:
[0068] The suitable operating temperature of the core 60 is maintained by regulating the internal temperature of the deformable core box 70. In high-temperature environments, the deformable core box 70 absorbs excess heat through its built-in phase change material, reducing the battery temperature. In low-temperature environments, the deformable core box 70 uses thermally conductive materials to transfer external heat to the battery body, preventing performance degradation due to excessively low temperatures. The deformation function of the deformable core box 70 balances the internal stress of the battery during operation. When fully charged, the core 60 expands and compresses the deformable core box 70, reducing its volume and lowering internal stress. When depleted, the core 60 contracts, and the deformable core box 70 rebounds, increasing its volume. This ensures that the core 60 remains within a balanced force range, preventing degradation of battery safety and cycle performance caused by changes in mechanical stress.
[0069] By employing the above technical solution, and by setting a deformable core box 70 at the center of the core 60 in the battery body, the heat generated during battery operation can be effectively regulated, thereby avoiding performance degradation or safety hazards caused by excessively high or low temperatures. Simultaneously, the deformable core box 70, utilizing its own deformation function, can effectively absorb the expansion of the core 60 during charging and discharging, effectively balancing the internal stress of the core 60 during operation. Combined with the heat absorption and release functions of the deformable core box 70, this effectively extends the battery's lifespan, prevents aging of internal battery materials or structural damage caused by excessive temperature fluctuations, and thus improves the battery's cycle performance and safety.
[0070] In one embodiment of this application, the deformable core box 70 is provided with at least one support bar 71 that can support the deformable core box 70 to improve the support strength of the deformable core box 70.
[0071] Specifically, the support strip 71 is located inside the deformable core box 70. Its function is to enhance the support strength of the deformable core box 70 and prevent it from deforming or being damaged when exposed to high temperatures, external forces, or battery expansion. The support strip 71 can be made of materials such as metal or high-strength plastic to ensure that it can provide sufficient support during battery operation.
[0072] The support strip 71 is fixedly connected to the inner wall of the deformable core box 70, forming a stable support structure inside the deformable core box 70. The support strip 71 can be a single support strip 71 or a combination of multiple support strips 71. The arrangement of the support strips 71 can be uniformly distributed or concentrated in certain areas as needed to ensure that the deformable core box 70 can maintain a stable shape when subjected to external pressure or temperature changes.
[0073] By adopting the above technical solution, the addition of the support strip 71 improves the support strength of the deformable core box 70, enabling it to withstand more external forces and internal pressures. Under high temperature and high-rate discharge conditions, it prevents the deformable core box 70 from deforming or breaking, thereby ensuring the stable operation of the battery's thermal regulation function. At the same time, the design of the support strip 71 enhances the durability of the deformable core box 70 during long-term use, extending the battery's lifespan and reducing battery failure caused by damage to the deformable core box 70.
[0074] In one embodiment of this application, the support bar 71 is at least one of a straight line, an S-shape, or a broken line.
[0075] Specifically, the straight support bars 71 are simple linear structures, relatively long, and arranged in a straight line. They are evenly distributed on the inner wall of the deformable core box 70 to provide balanced support force. The straight support bars 71 are suitable for situations where the deformable core box 70 has a relatively regular structure and the stress is relatively uniform. The straight support bars 71 can be connected to the inner wall of the deformable core box 70 through integral molding, welding, bonding, or embedding, ensuring a stable connection between the support bars 71 and the deformable core box 70. This allows the support bars 71 to effectively distribute pressure from the inside and outside, enhancing the mechanical strength of the deformable core box 70. The straight support bars 71 have a simple structure and low manufacturing cost.
[0076] The S-shaped support bar 71 is a curved structure composed of multiple curved segments, shaped like the letter "S". This shape of the support bar 71 can provide support while better adapting to the complex spatial layout inside the battery. The S-shaped support bar 71 can form a relatively complex support network within the deformable core box 70, enhancing the stability of the deformable core box 70 in multiple directions. The S-shaped support bar 71 can be connected to the inner wall of the deformable core box 70 through integral molding, fasteners, or welding, ensuring that it will not loosen or fall off under thermal expansion and pressure changes. Due to the curved design of the S-shaped support bar 71, it can effectively disperse forces from all directions, improving the compressive and deformation resistance of the deformable core box 70.
[0077] The zigzag-shaped support bar 71 is formed by connecting multiple straight segments sequentially, with adjacent segments arranged at an angle. The zigzag-shaped support bar 71 retains the simplicity of a straight support bar 71 while increasing its flexibility and adaptability through multiple angles. The zigzag-shaped support bar 71 can provide better support within a limited space, while reducing the risk of damage due to uneven pressure.
[0078] In one embodiment of this application, the deformable core box 70 is provided with at least one pressure relief port 72.
[0079] Specifically, the pressure relief port 72 is an opening structure provided at the top and / or bottom of the deformable core box 70, which allows the deformable core box 70 to automatically release pressure when the internal pressure of the battery reaches a certain threshold.
[0080] By adopting the above technical solution, the safety and stability of the deformable core box 70 are improved by providing pressure relief ports 72 at the top and / or bottom. The design of the pressure relief ports 72 ensures that the deformable core box 70 can release some pressure when the battery over-expands or the internal gas pressure is too high, reducing the risk of thermal runaway of the battery.
[0081] This application also discloses a method for using an adaptive smart lithium-ion battery, including the following steps:
[0082] Connect the positive terminal 11 and negative terminal 12 of the adaptive smart lithium-ion battery to an external circuit.
[0083] The temperature, stress value and / or local displacement parameters of the inner core 60 of the battery body and / or the internal air pressure and / or internal gas composition of the casing 10 are monitored in real time by the detection component 40.
[0084] The central processing unit 20 determines whether the battery's operating status is abnormal based on the parameter values detected by the detection unit 40.
[0085] When an abnormal state is detected, the central processing unit 20 controls the switch 30 to disconnect the connection between the positive terminal 11 and the positive terminal tab 61 of the core 60 and / or the connection between the negative terminal 12 and the negative terminal tab 62 to protect the safety of the battery body; or when an abnormal state is detected, the central processing unit 20 controls the electronic explosion-proof valve 50 to release the gas inside the battery and balance the internal and external gas pressure to extend the battery life and protect the safety of the battery body.
[0086] After the detection parameters return to normal, the central processing unit 20 can re-close the switch 30 and / or close the electronic explosion-proof valve 50 to restore the battery to normal operating status.
[0087] By employing the above technical solution, the detection component 40 monitors in real time at least one parameter value among the following: temperature of the battery core 60, stress value of the core 60, local displacement parameters of the core 60, internal air pressure of the casing, and gas composition of the casing. This allows for rapid detection of abnormal states and timely implementation of protective measures to disconnect the current path, effectively preventing safety hazards such as battery thermal runaway and mechanical deformation. Once the parameters return to normal, the battery automatically resumes its normal operating state, improving battery safety and lifespan while avoiding the complexity of human intervention, exhibiting high adaptability and intelligence. The electronic explosion-proof valve 50 promptly discharges negative reaction gases, balancing the internal and external air pressure of the casing 10, extending battery lifespan and enhancing safety.
[0088] It should be understood that, by adopting the above technical solution, the switch 30, detection component 40, electronic explosion-proof valve 50, deformable core box 70, and central processing unit 20 are all organically integrated to achieve multiple measures to extend battery life and protect battery safety, realizing multi-level and multi-layered protection. Those skilled in the art should systematically understand the technical solution and should not view the functions of each module in isolation.
[0089] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the content of the specification and drawings of this application under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. An adaptive smart lithium-ion battery, characterized in that, include: The battery body has a positive terminal (11) and a negative terminal (12); The detection element (40) is disposed in the battery body and is used to detect at least one parameter value among the core temperature, core stress value, core local displacement parameter, internal air pressure of the casing and internal gas composition of the battery body. A switch (30) is connected between the positive terminal (11) and the positive terminal tab (61) of the winding core (60) and / or between the negative terminal (12) and the negative terminal tab (62); and The central processing unit (20) is connected to the battery body and can turn the switch (30) on or off according to the detection result of the detection device (40).
2. The adaptive smart lithium-ion battery as described in claim 1, characterized in that, The battery body includes: A housing (10), the positive electrode post (11) and the negative electrode post (12) are disposed on the housing (10), and an electrolyte is disposed inside the housing (10); and The core (60) is disposed inside the housing (10).
3. The adaptive smart lithium-ion battery as described in claim 2, characterized in that, The housing (10) is provided with an electronic explosion-proof valve (50), and the central processing unit (20) can open or close the electronic explosion-proof valve (50) according to the detection result of the detection component (40).
4. The adaptive smart lithium-ion battery as described in any one of claims 1 to 3, characterized in that, The core (60) is also provided with a deformable core box (70) that can absorb or release heat from the core (60).
5. The adaptive smart lithium-ion battery as described in claim 4, characterized in that, The deformable core box (70) is provided with at least one support bar (71) that can support the deformable core box (70) to improve the support strength of the deformable core box (70).
6. The adaptive smart lithium-ion battery as described in claim 5, characterized in that, The support bar (71) is at least one of the following: straight, S-shaped, or polygonal.
7. The adaptive smart lithium-ion battery as described in claim 4, characterized in that, The deformable core box (70) is provided with at least one pressure relief port (72).
8. A method of using an adaptive smart lithium-ion battery, characterized in that, Includes the following steps: Connect the positive terminal (11) and negative terminal (12) of the adaptive smart lithium-ion battery to an external circuit; The detection device (40) monitors in real time at least one of the following parameters: temperature of the core (60) inside the battery body, stress value of the core (60), local displacement parameter of the core (60), internal air pressure of the casing, and internal gas composition of the casing. The central processing unit (20) determines whether the battery's operating status is abnormal based on the parameter values detected by the detection unit (40); When an abnormal state is detected, the central processing unit (20) disconnects the connection between the positive terminal post (11) and the positive terminal tab (61) of the winding core (60) and / or the connection between the negative terminal post (12) and the negative terminal tab (62) by controlling the switch (30) to protect the safety of the battery body; and / or when an abnormal state is detected, the central processing unit (20) releases the gas inside the battery by controlling the electronic explosion-proof valve (50) to balance the internal and external gas pressure to extend the battery life and protect the safety of the battery body; After the detection parameters return to normal, the central processing unit (20) can reclose the switch (30) and / or close the electronic explosion-proof valve (50) to restore the battery to normal working condition.