A lithium battery fast charging management system based on Turbo technology and its implementation method

Abstract

This application relates to the field of lithium battery charging technology, and provides a lithium battery fast charging management system based on Turbo technology and its implementation method. The system includes: a Turbo control module, used to dynamically switch the charging mode to constant current mode, constant voltage mode, or pulse mode according to the lithium battery state, so as to dynamically adjust the charging state of the lithium battery; a temperature management module, used to perform heat dissipation treatment on the lithium battery according to the real-time charging temperature exceeding the temperature threshold, so as to keep the real-time charging temperature of the lithium battery within a safe temperature range; and a charging monitoring module, used to monitor the lithium battery state under different charging modes in real time and feed it back to the Turbo control module and the temperature management module; wherein, the lithium battery state includes voltage, current, temperature, and internal resistance data of the lithium battery during charging; it can effectively manage the fast charging of lithium batteries, which helps to synergistically improve the fast charging speed, safety, and service life of lithium batteries.

Description

Technical Field

[0001] This application relates to the field of lithium battery charging technology, and more specifically, to a lithium battery fast charging management system based on Turbo technology and its implementation method. Background Technology

[0002] Developing rechargeable lithium batteries with fast-charging capabilities is crucial to meeting the demands of rapidly evolving portable electronic devices, electric vehicles, and grid energy storage. However, the core challenge facing current lithium battery fast-charging technology is the difficulty in simultaneously achieving charging speed, safety, and cycle life. Existing technologies suffer from the following limitations: traditional constant charging modes cannot adapt to changes in the state of the lithium battery in a timely and dynamic manner; the risk of thermal runaway is significant during high-rate charging; the charging speed bottleneck is difficult to overcome; and when relying on macroscopic parameters such as voltage and temperature to indirectly infer the health status of the lithium battery, it is difficult to adjust the fast-charging strategy in a timely and dynamic manner, resulting in significant lag and a substantial decrease in the cycle life of the lithium battery. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a lithium battery fast charging management system based on Turbo technology and its implementation method, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this application to solve its technical problem is: a lithium battery fast charging management system based on Turbo technology and its implementation method, the system comprising:

[0005] The Turbo control module is used to dynamically switch the charging mode to constant current mode, constant voltage mode or pulse mode according to the lithium battery status, so as to dynamically adjust the charging state of the lithium battery.

[0006] The temperature management module is used to dissipate heat from the lithium battery based on the real-time charging temperature exceeding the temperature threshold, so that the real-time charging temperature of the lithium battery is within a safe temperature range.

[0007] The charging monitoring module is used to monitor the status of the lithium battery in different charging modes in real time and feed it back to the Turbo control module and the temperature management module; wherein, the status of the lithium battery includes voltage, current, temperature and internal resistance data of the lithium battery during charging.

[0008] In some embodiments, the Turbo control module is configured with a fast Turbo mode, which employs high-frequency asymmetric pulse charging and uses reverse pulses to eliminate concentration polarization, allowing forward current; wherein, the high-frequency asymmetric pulse charging employs a forward high-current pulse plus a reverse micro-current discharge.

[0009] In some embodiments, the Turbo control module is further configured with an adaptive Turbo mode, which dynamically adjusts the ramp current based on real-time changes in internal resistance. If the internal resistance of the lithium battery decreases by a certain percentage, the current of the lithium battery increases by a certain percentage. At the same time, dynamic current limiting is performed in conjunction with real-time temperature feedback of the lithium battery.

[0010] In some embodiments, the Turbo control module is further configured with a protective Turbo mode, which employs intermittent charging and utilizes machine learning to predict the optimal pause duration in order to maintain the high current output of the lithium battery within the optimal pause duration based on the voltage rebound characteristics during the pause period.

[0011] In some embodiments, the temperature management module is configured with a graded composite heat dissipation mode, which is used to perform graded heat dissipation treatment on the lithium battery according to the real-time temperature of the lithium battery.

[0012] In some embodiments, the graded composite heat dissipation mode includes:

[0013] In the primary heat dissipation mode, a microfluidic phase change material interlayer is embedded between the lithium battery cells to control local temperature rise through phase change heat absorption.

[0014] The two-stage heat dissipation mode involves installing piezoelectric-driven micro-vortex tubes on the lithium battery. The waste electricity generated during charging drives the vortex tubes to produce low-temperature airflow, which then directionally cools the hot zone.

[0015] In some embodiments, the system further includes:

[0016] The miniaturized EIS module is used to perform a full-band impedance scan at intervals during the charging process, so as to determine the growth of SEI film and lithium dendrite trend inside the lithium battery in real time by the phase angle change at characteristic frequency points.

[0017] In some embodiments, performing a full-band impedance scan at intervals during the charging process includes:

[0018] When a sudden increase in the phase angle in the mid-frequency region is detected, the Turbo control module automatically triggers temperature cooling to dissipate heat from the lithium battery through the temperature management module; wherein, the frequency range of the mid-frequency region is 1-100Hz;

[0019] In some embodiments, performing a full-band impedance scan at intervals during the charging process further includes:

[0020] If the impedance in the low-frequency region rises above the impedance threshold, the Turbo control module automatically triggers a switch to pulse mode to apply a microcurrent pulse to repair the SEI film; wherein, the frequency range of the low-frequency region is <1Hz.

[0021] In some embodiments, the frequency range of the full-band is 0.1Hz-10kHz.

[0022] The beneficial effects of this application are as follows: Unlike existing technologies, the lithium battery fast charging management system and its implementation method based on Turbo technology dynamically switch the charging mode to constant current, constant voltage, or pulse mode according to the lithium battery state through a Turbo control module, thereby dynamically adjusting the lithium battery's charging state; the temperature management module performs heat dissipation treatment on the lithium battery based on the real-time charging temperature exceeding the temperature threshold, ensuring that the real-time charging temperature of the lithium battery remains within a safe temperature range; and the charging monitoring module monitors the lithium battery state in real time under different charging modes and feeds it back to the Turbo control module and the temperature management module. The lithium battery state includes voltage, current, temperature, and internal resistance data during lithium battery charging. This allows for dynamic monitoring, adjustment, and control of the lithium battery's charging state, effectively improving the lithium battery's charging rate, reducing charging time, and extending its cycle life. This contributes to the synergistic improvement of lithium battery fast charging speed, safety, and lifespan, facilitating timely and effective charging management of the lithium battery. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a lithium battery fast charging management system based on Turbo technology in an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of a heterogeneous computing architecture with FPGA and neural network accelerator in an embodiment of this application;

[0025] Figure 3 This is another schematic diagram of the lithium battery fast charging management system based on Turbo technology in the embodiments of this application;

[0026] The labels and numbers in the diagram are as follows: Turbo Control Module-1; Fast Turbo Mode-11; Adaptive Turbo Mode-12; Protective Turbo Mode-13; Temperature Management Module-2; Graded Composite Heat Dissipation Mode-21; Primary Heat Dissipation Mode-211; Secondary Heat Dissipation Mode-212; Charging Monitoring Module-3; Miniaturized EIS Module-4. Detailed Implementation

[0027] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0029] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0030] Furthermore, the terms indicating orientation, such as "up," "down," "front," "back," "left," "right," "upper end," and "lower end," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this application. Obviously, the described embodiments are some embodiments of this application, but not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0032] Example 1: This application provides a lithium battery fast charging management system and its implementation method based on Turbo technology, which can dynamically monitor, adjust and control the charging state of lithium batteries, effectively improve the charging rate of lithium batteries, reduce the charging time of lithium batteries, and extend the cycle life of lithium batteries, thus contributing to the synergistic improvement of lithium battery fast charging speed, safety and service life.

[0033] like Figure 1 As shown, the lithium battery fast charging management system based on Turbo technology includes:

[0034] Turbo control module 1 is used to dynamically switch the charging mode to constant current mode, constant voltage mode or pulse mode according to the lithium battery status, so as to dynamically adjust the charging status of the lithium battery.

[0035] Specifically, the Turbo control module 1 is set with a fast Turbo mode 11. The fast Turbo mode 11 uses high-frequency asymmetric pulse charging and uses reverse pulses to eliminate concentration polarization and allow forward current. The high-frequency asymmetric pulse charging uses a forward large current pulse plus a reverse micro current discharge.

[0036] In Fast Turbo Mode 11, the current charge level of the lithium battery is 0-30% SOC. High-frequency asymmetric pulse charging, employing a combination of forward high-current pulses and reverse micro-current discharge, precisely controls the amplitude of the reverse pulse. This not only avoids capacity decay during reverse discharge but also allows the graphite layers of the lithium battery's negative electrode to rearrange in an orderly manner, improving lithium-ion intercalation efficiency and thus increasing the charging rate.

[0037] Specifically, the Turbo control module 1 is also equipped with an adaptive Turbo mode 12. The adaptive Turbo mode 12 dynamically adjusts the ramp current based on the real-time change in internal resistance. If the internal resistance of the lithium battery decreases by a certain percentage, the current of the lithium battery increases by a certain percentage. At the same time, dynamic current limiting is performed in combination with the real-time temperature feedback of the lithium battery.

[0038] In Adaptive Turbo Mode 12, the current charge level of the lithium battery is 31-80% SOC. The first percentage is at least 1%, and the second percentage is at least 3%. That is, for every 1% decrease in the internal resistance of the lithium battery, the current of the lithium battery increases by 3% to adaptively adjust the charging efficiency. At the same time, the effect of temperature must be taken into account to further dynamically adjust the charging process.

[0039] Specifically, the Turbo control module 1 is also equipped with a protective Turbo mode 13. The protective Turbo mode 13 adopts intermittent charging and uses machine learning to predict the optimal pause time, so as to maintain the high current output of the lithium battery based on the voltage rebound characteristics of the pause period within the optimal pause time.

[0040] In Protective Turbo Mode 13, the current charge level of the lithium battery is 81-95% SOC. Intermittent charging is employed, for example, charging for 10 seconds and then pausing for 1 second. Machine learning methods can refer to existing technologies, mainly using big data training to predict results, aiming to optimize the charging pause periods. This ensures high current output while avoiding lithium plating, thereby guaranteeing the cycle life of the lithium battery.

[0041] This embodiment employs a multi-dynamic Turbo mode, which can dynamically switch between charging modes based on real-time lithium battery status, such as SOC and temperature, and combined with external requirements, such as pre-setting "Turbo priorities," resulting in higher charging efficiency and greater safety. This can be achieved, for example, through a distributed Turbo controller, such as... Figure 2 The diagram illustrates a heterogeneous computing architecture combining an FPGA and a neural network accelerator. It should be noted that in practical applications, the heterogeneous computing architecture combining an FPGA and a neural network accelerator can be designed and selected in detail according to specific application needs. The diagram shown is merely an example and does not constitute a specific limitation.

[0042] Temperature management module 2 is used to dissipate heat from the lithium battery based on the real-time charging temperature exceeding the temperature threshold, so that the real-time charging temperature of the lithium battery is within a safe temperature range.

[0043] Lithium batteries are prone to overheating during fast charging, so efficient heat dissipation is required. For example, liquid cooling, air cooling, or phase change materials can be used to control the real-time temperature of the lithium battery within a safe range.

[0044] Specifically, the temperature management module 2 is equipped with a graded composite heat dissipation mode 21 to perform graded heat dissipation treatment on the lithium battery according to its real-time temperature. The graded composite heat dissipation mode 21 includes:

[0045] The first-level heat dissipation mode 211 embeds a microfluidic phase change material interlayer between the lithium battery cells to control local temperature rise through phase change heat absorption.

[0046] The secondary cooling mode 212 involves installing piezoelectric-driven micro-eddy current tubes on the lithium battery. The waste electricity generated during charging drives the eddy current tubes to produce a low-temperature airflow, which then directionally cools the hot areas. The piezoelectric-driven micro-eddy current tubes require only 0.5% of the total charging energy, but can achieve a cooling power of 20W, resulting in superior heat dissipation.

[0047] This embodiment adopts a graded composite heat dissipation mode 21, which can effectively control the charging temperature difference of the lithium battery, so that its charging temperature can be kept relatively stable within a safe temperature range, thus ensuring the charging safety of the lithium battery.

[0048] The charging monitoring module 3 is used to monitor the lithium battery status in different charging modes in real time and feed it back to the Turbo control module 1 and the temperature management module 2; the lithium battery status includes the voltage, current, temperature and internal resistance data of the lithium battery during charging.

[0049] Specifically, real-time monitoring can be achieved using a multi-parameter fusion sensor array. For example, an integrated thin-film triaxial micromechanical heat flow sensor can simultaneously measure temperature, heat flow direction, and local pressure. It can also be combined with a flexible printed impedance detection electrode to achieve cell-level multi-physics monitoring.

[0050] Example 2: This application's embodiments are based on the lithium battery fast charging management system and its implementation method based on Turbo technology provided in Embodiment 1, such as... Figure 3 As shown, the lithium battery fast charging management system based on Turbo technology also includes:

[0051] The miniaturized EIS module 4 is used to perform a full-band impedance scan at intervals during the charging process, so as to determine the growth of the SEI film and the trend of lithium dendrites inside the lithium battery in real time by the phase angle change at characteristic frequency points.

[0052] Specifically, in this embodiment, performing a full-band impedance scan at regular intervals during the charging process includes:

[0053] When a sudden increase in the phase angle in the mid-frequency region is detected, the Turbo control module 1 automatically triggers temperature cooling to dissipate heat from the lithium battery through the temperature management module 2; the frequency range of the mid-frequency region is 1-100Hz.

[0054] Specifically, in this embodiment, performing a full-band impedance scan at regular intervals during the charging process further includes:

[0055] If the impedance in the low-frequency region rises above the impedance threshold, the Turbo control module 1 will automatically trigger a switch to pulse mode to apply a microcurrent pulse to repair the SEI film; the frequency range of the low-frequency region is <1Hz.

[0056] Specifically, in this embodiment, the frequency range of the entire frequency band is 0.1Hz-10kHz.

[0057] This embodiment monitors the subsurface-level health status of lithium batteries by monitoring internal changes, thereby significantly improving the cycle life of lithium batteries in dynamic Turbo mode.

[0058] It should be understood that ordinary skilled workers in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A lithium battery fast charging management system based on Turbo technology and its implementation method, characterized in that, The system includes: The Turbo control module is used to dynamically switch the charging mode to constant current mode, constant voltage mode or pulse mode according to the lithium battery status, so as to dynamically adjust the charging state of the lithium battery. The temperature management module is used to dissipate heat from the lithium battery based on the real-time charging temperature exceeding the temperature threshold, so that the real-time charging temperature of the lithium battery is within a safe temperature range. The charging monitoring module is used to monitor the status of the lithium battery in different charging modes in real time and feed it back to the Turbo control module and the temperature management module; wherein, the status of the lithium battery includes the voltage, current, temperature and internal resistance data of the lithium battery during charging; The system also includes: The miniaturized EIS module is used to perform a full-band impedance scan at intervals during the charging process, so as to determine the growth trend of SEI film and lithium dendrites inside the lithium battery in real time by the phase angle change at characteristic frequency points. The step of performing a full-band impedance scan at regular intervals during the charging process includes: When a sudden increase in the phase angle in the mid-frequency region is detected, the Turbo control module automatically triggers temperature cooling to dissipate heat from the lithium battery through the temperature management module; wherein, the frequency range of the mid-frequency region is 1-100Hz; The step of performing a full-band impedance scan at intervals during the charging process also includes: If the impedance in the low-frequency region rises above the impedance threshold, the Turbo control module automatically triggers a switch to pulse mode to apply a microcurrent pulse to repair the SEI film; wherein, the frequency range of the low-frequency region is <1Hz.

2. The lithium battery fast charging management system and its implementation method based on Turbo technology according to claim 1, characterized in that, The Turbo control module is set with a fast Turbo mode, which uses high-frequency asymmetric pulse charging and reverse pulses to eliminate concentration polarization and allow forward current; wherein, the high-frequency asymmetric pulse charging uses a forward large current pulse plus a reverse micro current discharge.

3. The lithium battery fast charging management system and its implementation method based on Turbo technology according to claim 2, characterized in that, The Turbo control module is also equipped with an adaptive Turbo mode. The adaptive Turbo mode dynamically adjusts the ramp current based on real-time changes in internal resistance. If the internal resistance of the lithium battery decreases by a certain percentage, the current of the lithium battery increases by a certain percentage. At the same time, dynamic current limiting is performed in conjunction with real-time temperature feedback of the lithium battery.

4. The lithium battery fast charging management system and its implementation method based on Turbo technology according to claim 2 or 3, characterized in that, The Turbo control module is also equipped with a protective Turbo mode, which uses intermittent charging and machine learning to predict the optimal pause time to maintain the high current output of the lithium battery based on the voltage rebound characteristics during the pause period within the optimal pause time.

5. The lithium battery fast charging management system and its implementation method based on Turbo technology according to claim 1, characterized in that, The temperature management module is equipped with a graded composite heat dissipation mode, which is used to perform graded heat dissipation treatment on the lithium battery according to the real-time temperature of the lithium battery.

6. The lithium battery fast charging management system and its implementation method based on Turbo technology according to claim 5, characterized in that, The graded composite heat dissipation mode includes: In the primary heat dissipation mode, a microfluidic phase change material interlayer is embedded between the lithium battery cells to control local temperature rise through phase change heat absorption. The two-stage heat dissipation mode involves installing piezoelectric-driven micro-vortex tubes on the lithium battery. The waste electricity generated during charging drives the vortex tubes to produce low-temperature airflow, which then directionally cools the hot zone.

7. The lithium battery fast charging management system and its implementation method based on Turbo technology according to claim 1, characterized in that, The frequency range of the full-band is 0.1Hz-10kHz.

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