Quick charging system, method, device and equipment for two-wheeled electric vehicle

Abstract

According to the quick charging system, method, device and equipment for the two-wheeled electric vehicle, blade single battery cells in a battery pack are divided into a plurality of groups, corresponding independent charging loops are configured, the charging state of each group is flexibly adjusted in cooperation with a switch element, and the situation that a large amount of heat is accumulated due to synchronous heating of all the battery cells during traditional unified charging can be avoided; the uncharged groups can assist in heat dissipation by virtue of heat dissipation gaps among the battery cells, so that the heat dissipation effect of the battery pack is improved, the high-temperature protection problem caused by heat accumulation in hot weather is relieved, and the battery pack is assisted to maintain a quick charging mode for a long time; meanwhile, the cell temperature acquisition units which are correspondingly arranged in groups are combined with the environment temperature acquisition unit, so that relevant temperature data can be accurately acquired, and reliable data support can be provided for the main control unit to regulate and control the charging state; according to the scheme in the embodiment of the invention, the blade cell arrangement characteristics are adapted, the rapid charging efficiency is not reduced as much as possible, the thermal runaway risk of the battery is reduced, and the rapid charging safety and stability are improved.

Description

Technical Field

[0001] This application relates to the field of two-wheeled vehicle charging, and in particular to a fast charging system, method, apparatus and equipment for two-wheeled electric vehicles. Background Technology

[0002] In the current field of fast charging for two-wheeled electric vehicles, blade cells mostly adopt a centralized charging layout and a unified charging method. During this process, all cells are in a charging state and generate heat at the same time, which makes it easy for a large amount of heat to accumulate in the battery pack, thereby triggering high temperature protection. This makes it difficult for the battery pack to maintain the ultra-fast charging or fast charging mode for a long time, especially in hot weather, this situation is more severe. Summary of the Invention

[0003] This application aims to provide a fast charging system, method, apparatus, and equipment for two-wheeled electric vehicles, which can increase the proportion of time spent on fast charging or super-fast charging during the charging process of the battery pack.

[0004] According to the fast charging system for a two-wheeled electric vehicle according to the first aspect of this application, the battery pack of the two-wheeled electric vehicle includes a plurality of blade cells arranged sequentially, a heat dissipation gap between two adjacent blade cells, and the plurality of blade cells are divided into a plurality of blade battery groups, each blade battery group including at least one blade cell. The fast charging system for the two-wheeled electric vehicle includes: The group charging circuit module includes an independent charging circuit configured for each blade battery group, and a switching element is connected in series in each independent charging circuit for adjusting the charging state of each blade battery group; Multiple cell temperature acquisition units are configured corresponding to multiple blade battery groups to acquire the group cell temperature of the corresponding blade battery group; An ambient temperature acquisition unit is used to collect the ambient temperature outside the two-wheeled electric vehicle. The main control unit is electrically connected to the group charging circuit module, the multiple cell temperature acquisition units, and the ambient temperature acquisition unit, respectively.

[0005] The fast charging method for a two-wheeled electric vehicle according to a second aspect embodiment of this application is applied to a fast charging system for a two-wheeled electric vehicle as described in the first aspect embodiment, the fast charging method for the two-wheeled electric vehicle comprising: The ambient temperature outside the vehicle is acquired by the ambient temperature acquisition unit. Acquire multiple grouped cell temperatures collected by multiple cell temperature acquisition units; The internal cell uniform temperature is determined based on the temperatures of the multiple grouped cells. Determine the temperature difference between the external ambient temperature and the internal battery cell temperature; Based on the internal and external temperature difference, the basic interval time for charging and patrol is determined. When the external ambient temperature is lower than the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the longer the basic interval time for charging and patrol. When the external ambient temperature is higher than or equal to the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the shorter the basic interval time for charging and patrol. At each interval of the basic charging cycle time, one of the independent charging circuits is controlled to charge the corresponding blade battery group, and the multiple independent charging circuits complete the charging of the corresponding blade battery group in a preset cycle order, wherein the preset cycle order is used to indicate the order in which the multiple blade battery groups are charged in cycles.

[0006] A fast charging device for a two-wheeled electric vehicle according to a third aspect of this application is applied to a fast charging system for a two-wheeled electric vehicle as described in the first aspect embodiment, the fast charging device for the two-wheeled electric vehicle comprising: The ambient temperature acquisition module is used to acquire the outside ambient temperature of the vehicle collected by the ambient temperature acquisition unit. The cell temperature acquisition module is used to acquire the temperatures of multiple groups of cells collected by multiple cell temperature acquisition units; A temperature uniformity determination module is used to determine the internal cell uniformity based on the temperatures of the multiple grouped cells. The temperature difference determination module is used to determine the internal and external temperature difference between the external ambient temperature and the internal battery cell temperature. The cycle determination module is used to determine the basic interval time of charging cycle based on the internal and external temperature difference. When the external ambient temperature is lower than the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the longer the basic interval time of charging cycle. When the external ambient temperature is higher than or equal to the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the shorter the basic interval time of charging cycle. The charging control module is used to control one of the independent charging circuits to charge the corresponding blade battery group at each charging cycle basic interval, and to enable multiple independent charging circuits to complete the charging of the corresponding blade battery group in a preset cycle order, wherein the preset cycle order is used to indicate the order in which the multiple blade battery groups are charged in cycles.

[0007] An electronic device according to a fourth aspect of this application includes: a processor and a memory storing computer program instructions; When the processor executes computer program instructions, it implements the fast charging method for two-wheeled electric vehicles as described in the second aspect embodiment.

[0008] The fast charging system, method, apparatus, and device for two-wheeled electric vehicles in this application divides the blade cells within the battery pack into multiple groups and configures corresponding independent charging circuits. Combined with switching elements, the charging status of each group can be flexibly adjusted. This avoids the large heat accumulation caused by the simultaneous heating of all cells during traditional unified charging. Furthermore, the uncharged groups can utilize the heat dissipation gaps between cells to assist in heat dissipation, improving the battery pack's heat dissipation effect and alleviating the high-temperature protection problem caused by heat accumulation in hot weather, thus helping the battery pack maintain fast charging mode for a longer period. Simultaneously, the cell temperature acquisition unit set for each group, combined with the ambient temperature acquisition unit, can accurately acquire relevant temperature data, providing reliable data support for the main control unit to regulate the charging status. The solution in this application is adapted to the blade cell arrangement characteristics, helping to reduce the risk of battery thermal runaway while minimizing the reduction in fast charging efficiency, improving fast charging safety and stability, and extending the lifespan of the blade battery pack.

[0009] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0010] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an electrical system diagram of the heat dissipation system of the charging terminal according to an embodiment of this application; Figure 2 This is a schematic diagram of the arrangement of the blade cell in an embodiment of this application; Figure 3 This is a flowchart of a fast charging method for a two-wheeled electric vehicle according to an embodiment of this application.

[0011] Figure label: Group charging circuit module 110; cell temperature acquisition unit 120; ambient temperature acquisition unit 130; main control unit 140; voltage acquisition unit 150; current acquisition unit 160; blade single cell 210. Detailed Implementation

[0012] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0013] In the description of this application, the use of terms such as "first," "second," etc., is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0014] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and 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 of this application.

[0015] In the description of this application, it should be noted that, unless otherwise explicitly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0016] The technical solution of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this application, not all embodiments.

[0017] refer to Figure 1 , Figure 2 One embodiment of this application provides a fast charging system for a two-wheeled electric vehicle, which includes: The group charging circuit module 110 includes an independent charging circuit configured for each blade battery group, and a switching element is connected in series in each independent charging circuit to adjust the charging state of each blade battery group. Multiple cell temperature acquisition units 120 are set up corresponding to multiple blade battery groups to acquire the cell temperature of the corresponding blade battery group; The ambient temperature acquisition unit 130 is used to acquire the ambient temperature outside the two-wheeled electric vehicle. The main control unit 140 is electrically connected to the group charging circuit module 110, multiple cell temperature acquisition units 120, and ambient temperature acquisition unit 130, respectively.

[0018] In this embodiment, by dividing the blade cell 210 within the battery pack into multiple groups and configuring corresponding independent charging circuits, and flexibly adjusting the charging status of each group with switching elements, the large amount of heat accumulation caused by the simultaneous heating of all cells during traditional unified charging can be avoided. Furthermore, the uncharged groups can utilize the heat dissipation gaps between cells to assist in heat dissipation, which helps improve the heat dissipation effect of the battery pack, alleviates the high-temperature protection problem caused by heat accumulation in hot weather, and helps the battery pack maintain fast charging mode for a longer period. Simultaneously, the cell temperature acquisition unit 120 set for each group, combined with the ambient temperature acquisition unit 130, can accurately acquire relevant temperature data, providing reliable data support for the main control unit 140 to regulate the charging status. The solution in this embodiment adapts to the blade cell arrangement characteristics, minimizing the reduction in fast charging efficiency while helping to reduce the risk of battery thermal runaway, improving fast charging safety and stability, and extending the lifespan of the blade battery pack.

[0019] The battery pack of the aforementioned two-wheeled electric vehicle includes multiple blade cells 210 arranged sequentially. There is a heat dissipation gap between two adjacent blade cells 210. The multiple blade cells 210 are divided into multiple blade battery groups, and each blade battery group includes at least one blade cell 210.

[0020] The blade cells 210 in the aforementioned battery pack are arranged linearly, with a heat dissipation gap reserved between adjacent blade cells 210 (the specific gap width can be adjusted according to actual needs). Multiple blade cells 210 can be divided into 3-6 blade battery groups in series, with each group containing at least one blade cell 210, preferably 4-8 blade cells 210 in series per group. The group connections can be encapsulated with insulated terminals to prevent short circuits between groups, and each group has an independent charging interface for connecting to the group charging circuit module 110. The sequentially arranged blade cells 210 and the reserved heat dissipation gaps provide a channel for heat dissipation, reducing direct heat accumulation. This thermal control effect is even more pronounced when the battery pack incorporates active cooling methods such as air cooling or liquid cooling.

[0021] In the aforementioned group charging circuit module 110, each blade battery group is configured with an independent charging circuit. Each independent charging circuit can be connected in series with an automotive-grade N-channel MOSFET as a switching element. Each MOSFET can be electrically connected to the main control unit 140 with a driver chip, allowing the main control unit 140 to adjust the charging state by controlling the conduction of the MOSFET. The independent charging circuit enables individual power supply control for each blade battery group. Combined with the switching element, it allows for flexible adjustment of the charging / stop state of each group, effectively avoiding the problem of simultaneous heating of all cells during traditional unified charging. Simultaneously, the automotive-grade switching element possesses stable switching performance, ensuring the reliability of charging circuit switching and providing hardware support for the implementation of the round-trip charging strategy, thus helping to maintain the stability of the fast charging process.

[0022] The aforementioned cell temperature acquisition unit 120 can directly use an NTC temperature sensor. Each blade battery group can be configured with two sensors, which are respectively attached to the middle area of ​​different blade individual cells 210 within the group using thermally conductive adhesive (avoiding the hot spots of the tabs as much as possible). When it is necessary to obtain the cell temperature of the corresponding blade battery group, the average value of the two sensors can be used directly. The temperature acquisition unit set for each group can accurately obtain the real-time cell temperature of each group, which can effectively reduce errors caused by local high temperature compared to the overall temperature measurement method.

[0023] The aforementioned ambient temperature acquisition unit 130 can be equipped with an automotive-grade temperature sensor. The sensor can be installed on the exterior ventilation area of ​​the two-wheeled electric vehicle (avoiding direct sunlight and areas directly exposed to rain). The ambient temperature acquisition unit 130 can acquire the outside ambient temperature in real time, providing environmental baseline data to the main control unit 140. This facilitates the development of charging strategies adapted to different environments based on the temperature of the grouped battery cells. Especially in hot weather, it can predict the risk of heat buildup in advance, assisting the main control unit 140 in adjusting the charging pace accordingly. This helps alleviate the problem of exacerbated heat buildup in high-temperature environments and improves the system's adaptability to different environments.

[0024] The aforementioned main control unit 140 is a controller within the charging terminal. The group charging circuit module 110, multiple cell temperature acquisition units 120, and ambient temperature acquisition unit 130 can be connected to the charging interface via leads, thereby achieving electrical connection with the main control unit 140 after the charging gun is connected to the charging interface. Alternatively, the group charging circuit module 110, multiple cell temperature acquisition units 120, and ambient temperature acquisition unit 130 can be first connected to the battery pack's BMS, achieving electrical connection with the main control unit 140 through the BMS. This application does not limit the specific electrical connection or signal transmission method, as long as the main control unit 140 can acquire or control the data from the group charging circuit module 110, multiple cell temperature acquisition units 120, ambient temperature acquisition unit 130, power adjustment unit, voltage acquisition unit 150, and current acquisition unit 160.

[0025] The aforementioned group charging circuit module 110, multiple cell temperature acquisition units 120, and ambient temperature acquisition unit 130 are all arranged inside the battery pack.

[0026] In some embodiments, the above-mentioned fast charging system for two-wheeled electric vehicles further includes: The power regulation unit, electrically connected to the main control unit 140, is used to regulate the output power of each independent charging circuit.

[0027] In this embodiment, the power regulation unit can work with the main control unit 140 to achieve differentiated power regulation for each independent charging circuit. Under high temperature or poor heat dissipation conditions, the charging power of the corresponding group can be reduced to ensure safety; under low temperature or good heat dissipation conditions, the fast charging power is maintained, balancing efficiency. This helps the system dynamically adapt to different temperature conditions, reducing the frequency of high-temperature protection triggers and improving fast charging stability and battery lifespan.

[0028] The aforementioned power regulation unit can be a DC / DC converter located within the battery pack, supporting adjustments to output voltage and current. One unit is configured for each independent charging circuit. The input of this unit connects to a fast-charging power supply, and the output is connected in series to the corresponding independent charging circuit. The main control unit 140 generates power regulation commands based on cell temperature and ambient temperature data, driving the DC / DC converter to adjust the output current and voltage, achieving precise power control for each circuit. It should be noted that if there is no need to charge two or more blade battery groups simultaneously, a single DC / DC converter can be used.

[0029] In some embodiments, the above-mentioned fast charging system for two-wheeled electric vehicles further includes: Multiple voltage acquisition units 150 are electrically connected to the main control unit 140 and are used to acquire the group battery voltage of multiple blade battery groups; Multiple current acquisition units 160 are configured corresponding to multiple blade battery groups and connected in series in the corresponding independent charging circuit to acquire the group charging current of the corresponding independent charging circuit.

[0030] In this embodiment, multiple voltage and current acquisition units 160 can accurately acquire the voltage and charging current data of each group of batteries, which helps the main control unit 140 to accurately determine the battery status and charging conditions of each group, providing reliable data support for power adjustment and cycle charging switching. At the same time, it can promptly detect problems such as voltage imbalance and current abnormality in each group, helping to improve charging safety, reduce the thermal risk caused by local charging abnormalities, and help ensure the stable operation of the fast charging system.

[0031] In some implementations, the above-mentioned fast charging system for two-wheeled electric vehicles also includes an alarm module electrically connected to the main control unit 140.

[0032] In this embodiment, the alarm module can promptly issue alerts when abnormalities occur in the fast charging system, allowing users to quickly become aware of risks such as cell overheating, voltage imbalance, and abnormal current, facilitating proactive countermeasures and reducing safety hazards. Simultaneously, it assists staff in locating faults, improving system maintenance convenience, preventing abnormal operating conditions from continuously affecting the battery and fast charging system, thus ensuring the safety of the fast charging process and mitigating the adverse effects of faults on battery life to some extent.

[0033] The aforementioned alarm module can integrate an active buzzer and a three-color LED indicator, installed in a prominent position on the charging terminal's casing. Upon receiving abnormal temperature, voltage, and current signals, the main control unit 140 triggers the corresponding alarm mode. During a warning, a flashing yellow light is accompanied by an intermittent buzzer; during a fault, a solid red light is accompanied by a continuous buzzer, allowing users to quickly identify the status. Furthermore, alarm information can be transmitted via communication to a remote management terminal and the user's smart mobile device.

[0034] like Figure 3 As shown, this application embodiment also provides a fast charging method for a two-wheeled electric vehicle. The fast charging method for a two-wheeled electric vehicle is applied to the main control unit 140 in the above-mentioned fast charging system for a two-wheeled electric vehicle. The fast charging method for a two-wheeled electric vehicle includes steps S100 to S600. Step S100: Obtain the ambient temperature outside the vehicle collected by the ambient temperature acquisition unit 130; Step S200: Obtain the temperatures of multiple groups of battery cells collected by multiple battery cell temperature acquisition units 120; Step S300: Determine the internal cell uniform temperature based on the temperatures of multiple grouped cells; Step S400: Determine the temperature difference between the outside ambient temperature and the internal temperature of the battery cells; Step S500: Determine the basic interval time for charging cycle based on the temperature difference between the inside and outside. When the ambient temperature outside the vehicle is lower than the average temperature of the internal battery cells, the larger the absolute value of the temperature difference between the inside and outside, the longer the basic interval time for charging cycle. When the ambient temperature outside the vehicle is higher than or equal to the average temperature of the internal battery cells, the larger the absolute value of the temperature difference between the inside and outside, the shorter the basic interval time for charging cycle. In step S600, at each charging cycle basic interval time, an independent charging circuit is controlled to charge the corresponding blade battery group, and multiple independent charging circuits complete the charging of the corresponding blade battery group in a preset cycle order. The preset cycle order is used to indicate the order in which multiple blade battery groups are charged in cycles.

[0035] The method in this embodiment is based on the aforementioned fast charging system for two-wheeled electric vehicles, and therefore possesses all the beneficial effects of such a system. Simultaneously, this method first obtains the ambient temperature outside the vehicle and the temperature of each group of battery cells, calculates and determines the internal average temperature of the battery cells and the temperature difference between the inside and outside. Then, it adapts the basic interval time for charging cycles according to the relationship between the absolute value of the temperature difference and the ambient and average temperatures. Logically, this aligns with actual heat dissipation conditions. When the ambient temperature is lower than the internal average temperature, the larger the absolute value of the temperature difference, the longer the interval, allowing sufficient time for heat dissipation. When the ambient temperature is higher than or equal to the average temperature, the larger the absolute value of the temperature difference, the shorter the interval, reasonably ensuring both fast charging efficiency and heat dissipation requirements. Furthermore, the cyclic charging avoids simultaneous heating of all battery cells, reducing heat accumulation within the battery pack and helping to alleviate the problem of high-temperature triggering protection. It balances fast charging efficiency and heat dissipation safety, adapts to different outdoor environmental requirements, improves fast charging stability, and helps extend the lifespan of the blade battery pack.

[0036] The main control unit 140 acquires monitoring data from the ambient temperature acquisition unit 130 via a preset communication link. The ambient temperature acquisition unit 130 uses an automotive-grade temperature sensor to collect the ambient temperature outside the ventilation area on the outside of the two-wheeled electric vehicle in real time. The main control unit 140 can perform moving average filtering on the received data to remove abnormal fluctuations and obtain stable ambient temperature data for storage.

[0037] The main control unit 140 can acquire data from the battery pack side through the BMS. The BMS can simultaneously acquire the grouped cell temperatures collected by multiple cell temperature acquisition units 120 through the ADC acquisition channel. Each blade battery group is equipped with a dedicated temperature acquisition unit. The sensor is attached to the core area of ​​the grouped cell to collect the cell temperature in real time. The acquisition frequency can be kept consistent with the ambient temperature. After receiving the data from each group, the main control unit 140 records the real-time temperature of each blade battery group and marks abnormal temperature data for subsequent verification.

[0038] The aforementioned main control unit 140 retrieves the real-time cell temperatures of all stored blade battery groups and uses an arithmetic mean algorithm to calculate the average internal cell temperature. The calculation formula is: average internal cell temperature = sum of cell temperatures of all groups ÷ total number of groups. Before calculation, abnormal group temperatures that exceed the normal temperature range can be removed to avoid the impact of abnormal temperatures of a single group on the accuracy of the average temperature. After the calculation is completed, the average temperature data is retained as the core basis for subsequent temperature difference determination.

[0039] The main control unit 140 calculates the internal and external temperature difference based on the acquired internal cell uniform temperature and external ambient temperature. The temperature difference calculation formula is: internal and external temperature difference = internal cell uniform temperature - external ambient temperature. At the same time, the absolute value of the temperature difference is calculated and stored. The main control unit 140 records the relationship between the external ambient temperature and the internal cell uniform temperature, clarifies the positive and negative attributes of the temperature difference, and provides key judgment conditions for subsequent wheel patrol interval time determination.

[0040] The aforementioned main control unit 140 can have a built-in "temperature difference-cycle interval" mapping table or function relationship to determine the basic cycle interval time for charging based on the internal and external temperature difference and the relationship between ambient temperature and average temperature. If the external ambient temperature is lower than the internal cell average temperature, the larger the absolute value of the temperature difference, the better the heat dissipation effect brought by the environment, and a longer cycle interval can be retrieved from the mapping table. If the external ambient temperature is higher than or equal to the internal cell average temperature, the larger the absolute value of the temperature difference, the worse the heat dissipation effect brought by the environment, and a shorter cycle interval can be retrieved. After determination, the basic cycle interval time is locked for each blade battery group.

[0041] The main control unit 140 uses the determined basic interval time of the charging cycle as the timing benchmark. After the interval time is reached, it sends an on / off command to the group charging circuit module 110 to control the switching element of the corresponding independent charging circuit to conduct and charge the target blade battery group. The preset cycle order is to cycle in sequence according to the blade battery group number. At the same time, only a single independent charging circuit is conducted, and the other circuits remain disconnected. The uncharged group relies on the heat dissipation gap between the cells to dissipate heat naturally. The main control unit 140 sends commands in sequence to realize the cyclic charging of all blade battery groups.

[0042] It should be noted that, in order to ensure heat dissipation and fast charging requirements, the rotation is not limited to one round. It can be set to multiple rounds according to actual needs. Generally, the worse the heat dissipation caused by the environment, the more rounds are needed.

[0043] In some embodiments, the above-mentioned fast charging method for two-wheeled electric vehicles further includes: When the cell temperature of the current blade battery group reaches the preset cell temperature warning threshold, the charging current of the next blade battery group in the preset cycle sequence is gradually increased, while the charging current of the current blade battery group is gradually decreased, so as to complete the switching and adjustment of the independent charging circuit.

[0044] In this embodiment, the method avoids current fluctuations caused by directly switching charging when the current charging group is at a high temperature. Gradually increasing and decreasing the current ensures a smooth charging transition, reducing the impact on the fast charging system. At the same time, starting the preheating of the next charging group in advance not only alleviates heat accumulation in the current group but also does not affect the overall fast charging rhythm. This helps reduce the probability of high temperature triggering protection, balancing heat dissipation safety and fast charging efficiency. It also reduces the damage to the battery caused by sudden current changes, which is beneficial to improving fast charging stability and helping to extend battery life.

[0045] It should be noted that temperature is the primary basis for switching. That is, even if the basic interval between charging cycles has not been reached, once the temperature reaches the preset cell temperature warning threshold, it is necessary to switch to an independent charging circuit in a timely manner.

[0046] In some embodiments, the above-mentioned fast charging method for two-wheeled electric vehicles further includes: A preset heat dissipation monitoring cycle is used to execute the heat dissipation monitoring strategy in an interrupt manner. Thermal monitoring strategies include: Acquire multiple grouped cell temperatures collected by multiple cell temperature acquisition units 120; The cell cooling rate for each blade battery group is determined based on the cell temperature of each group. If the cell cooling rate of the previous blade battery group is less than the preset cell cooling warning threshold, reduce the output power of the independent charging circuit corresponding to the current blade battery group and extend the basic interval time of the charging cycle corresponding to the current blade battery group.

[0047] In this implementation, periodically interrupting the thermal monitoring process allows for timely monitoring of the heat dissipation status of each group, accurately identifying heat dissipation issues in the previous group, and improving overall heat dissipation by reducing the power of the current group and extending the polling interval, thus preventing continuous heat accumulation. This strategy reduces the risk of high temperatures caused by poor heat dissipation, lowers the frequency of high-temperature protection triggers, and improves thermal safety while maintaining fast charging efficiency. It also helps optimize the compatibility of the fast charging system, reduces the impact of heat dissipation problems on the battery, and contributes to improving fast charging stability and battery lifespan.

[0048] The aforementioned preset heat dissipation monitoring cycle is stored in the main control unit 140. Upon completion of each cycle, the main control unit 140 executes the heat dissipation monitoring strategy via an interrupt. It first synchronously acquires the grouped cell temperatures from all cell temperature acquisition units 120, retrieves the temperature data from the previous cycle for the same group, and calculates the cooling rate of each group's cells using the temperature difference and time difference. It then compares the previous group's cooling rate with the preset cooling warning threshold. If the rate is less than the threshold, the main control unit 140 sends a command to reduce the output power of the corresponding circuit in the current charging group, and simultaneously extends the basic charging cycle interval time of the current group by a preset amount. After completing the adjustment, the normal basic charging cycle interval time is restored.

[0049] In some implementations, the fast charging system for two-wheeled electric vehicles also includes a power regulation unit electrically connected to the main control unit 140; Fast charging methods for two-wheeled electric vehicles also include: When the cell temperature rise rate of the current blade battery group reaches the preset cell temperature rise warning threshold, the control power regulation unit reduces the output power to the corresponding independent charging circuit.

[0050] In this embodiment, the method can promptly respond to the risk of rapid temperature rise in the current group of battery cells. By reducing the output power of the corresponding circuit, it suppresses temperature rise, avoids high temperature triggering protection to interrupt fast charging, and balances fast charging efficiency and charging safety. It can reduce the loss caused by excessively rapid temperature rise of the battery cells, reduce the risk of heat accumulation and thermal runaway, help maintain the stable operating conditions of the battery pack, improve the adaptability of the fast charging system to abnormal temperature rise, help ensure the stability of the fast charging process, and help extend the service life of the blade battery.

[0051] It should be noted that if the cell temperature rise rate exceeds the preset cell temperature rise warning threshold, an alarm for excessively rapid temperature rise will usually be triggered to promptly notify maintenance personnel and users. This situation is most likely caused by a fault in the individual blade cell.

[0052] The main control unit 140 collects the cell temperature of the current charging group in real time, records temperature data at fixed time intervals, and calculates the cell heating rate by the temperature difference and time difference between adjacent cells. A preset cell heating warning threshold is stored in the main control unit 140. When the heating rate is determined to reach the threshold, the main control unit 140 sends a power reduction command to the power regulation unit. The power regulation unit reduces the output power of the corresponding independent charging circuit in a gradient manner, adapting the reduction to the current cell temperature. After cooling, the heating rate is continuously monitored. Once the rate drops, the current power is maintained to ensure safe charging connection.

[0053] In some embodiments, the fast charging system for two-wheeled electric vehicles also includes a plurality of voltage acquisition units 150 electrically connected to the main control unit 140, and a plurality of current acquisition units 160 electrically connected to the main control unit 140. Controlling an independent charging circuit to charge the corresponding blade battery group includes: Obtain the group battery voltage collected by the voltage acquisition unit 150 corresponding to the current blade battery group, and the group charging current collected by the current acquisition unit 160. The current state of charge of the blade battery group is determined based on the group battery voltage and group charging current corresponding to the current blade battery group. If the current blade battery group's charge status exceeds a preset high charge threshold, control the power regulation unit corresponding to the current blade battery group to reduce the output power of the corresponding independent charging circuit to a preset trickle charging power, and remove the current blade battery group from the preset cycle sequence.

[0054] In this embodiment, the battery status of each group is accurately determined by voltage and current data. When the battery is high, trickle charging is switched and the cycle is removed, which avoids overcharging and damage to the battery, ensuring charging safety. At the same time, it reduces the cycle resources occupied by ineffective fast charging of high-battery groups, improves the charging efficiency of other low-battery groups, optimizes the overall fast charging rhythm, and balances battery protection and charging efficiency. This helps to extend battery life and improve the adaptability of the fast charging system.

[0055] When the main control unit 140 controls the independent charging circuit to be turned on, it simultaneously acquires the group battery voltage from the voltage acquisition unit 150 and the group charging current from the current acquisition unit 160 corresponding to the current blade battery group. Based on the voltage and current data, the group's power status is determined through a preset power estimation algorithm. A preset high power threshold is pre-stored in the main control unit 140. If the power status is determined to exceed the threshold, the main control unit 140 controls the corresponding power adjustment unit to reduce the output power to a preset trickle charging power and removes the group from the preset cycle sequence, and it will not be charged in subsequent cycles.

[0056] It should be noted that in some scenarios, there is no capability to configure an independent power regulation unit for each blade battery group. In this case, charging of blade battery groups that exceed the preset high power threshold can be stopped directly. At the same time, the current blade battery group should be removed from the preset cycle sequence to improve subsequent charging efficiency.

[0057] The fast charging method for two-wheeled electric vehicles provided in this application can be implemented by a fast charging device for two-wheeled electric vehicles. This application uses a fast charging device for two-wheeled electric vehicles to illustrate the fast charging method, as an example, to explain the fast charging device provided in this application.

[0058] This application embodiment also provides a fast charging device for a two-wheeled electric vehicle, applied to the fast charging system for a two-wheeled electric vehicle as described above. The fast charging device for the two-wheeled electric vehicle includes: The ambient temperature acquisition module is used to acquire the outside ambient temperature collected by the ambient temperature acquisition unit 130. The cell temperature acquisition module is used to acquire the temperatures of multiple groups of cells collected by multiple cell temperature acquisition units 120; The temperature uniformity determination module is used to determine the internal cell uniformity based on the temperatures of multiple grouped cells. The temperature difference determination module is used to determine the temperature difference between the external ambient temperature and the internal battery cell temperature. The cycle determination module is used to determine the basic interval time of charging cycle based on the temperature difference between the inside and outside. When the ambient temperature outside the vehicle is lower than the average temperature of the internal battery cells, the larger the absolute value of the temperature difference between the inside and outside, the longer the basic interval time of charging cycle. When the ambient temperature outside the vehicle is higher than or equal to the average temperature of the internal battery cells, the larger the absolute value of the temperature difference between the inside and outside, the shorter the basic interval time of charging cycle. The charging control module is used to control an independent charging circuit to charge the corresponding blade battery group at each charging cycle basic interval time, and to enable multiple independent charging circuits to complete the charging of the corresponding blade battery group in a preset cycle order. The preset cycle order is used to indicate the order in which multiple blade battery groups are charged in cycles.

[0059] This application also provides an electronic device, including: a processor and a memory storing computer program instructions; when the processor executes the computer program instructions, it implements the fast charging method for two-wheeled electric vehicles as described above. The source table provided in this application can implement each process of the above-described fast charging method for two-wheeled electric vehicles and achieve the same beneficial effects; to avoid repetition, it will not be described again here.

[0060] This application also provides a computer-readable storage medium storing computer-executable instructions that are executed by a processor or control module, causing the processor to perform the fast charging method for two-wheeled electric vehicles described above, for example, the method described above.

[0061] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0062] The functional blocks shown in the above structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. The programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM, floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0063] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0064] It should also be noted that the user information involved in this application, including but not limited to user device information and user personal information, and the data, including but not limited to data used for analysis, stored data, and displayed data, are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of related data must comply with relevant regulations. The acquisition, storage, use, and processing of data in the technical solution of this application all comply with the relevant provisions of national laws and regulations.

[0065] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus, and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0066] The above are merely specific embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A fast charging system for a two-wheeled electric vehicle, characterized in that, The battery pack of the two-wheeled electric vehicle includes a plurality of blade cells arranged in sequence, with a heat dissipation gap between adjacent blade cells, and the plurality of blade cells are divided into a plurality of blade battery groups, each blade battery group including at least one blade cell; The fast charging system for the two-wheeled electric vehicle includes: The group charging circuit module includes an independent charging circuit configured for each blade battery group, and a switching element is connected in series in each independent charging circuit for adjusting the charging state of each blade battery group; Multiple cell temperature acquisition units are configured corresponding to multiple blade battery groups to acquire the group cell temperature of the corresponding blade battery group; An ambient temperature acquisition unit is used to collect the ambient temperature outside the two-wheeled electric vehicle. The main control unit is electrically connected to the group charging circuit module, the multiple cell temperature acquisition units, and the ambient temperature acquisition unit, respectively.

2. The fast charging system for two-wheeled electric vehicles according to claim 1, characterized in that, Also includes: The power regulation unit is electrically connected to the main control unit and is used to regulate the output power of each of the independent charging circuits.

3. The fast charging system for two-wheeled electric vehicles according to claim 1, characterized in that, Also includes: Multiple voltage acquisition units are electrically connected to the main control unit and are used to acquire the group battery voltage of multiple blade battery groups; Multiple current acquisition units are configured corresponding to multiple blade battery groups and connected in series with the corresponding independent charging circuits to acquire the group charging current of the corresponding independent charging circuits.

4. The fast charging system for two-wheeled electric vehicles according to claim 1, characterized in that, It also includes an alarm module that is electrically connected to the main control unit.

5. A fast charging method for a two-wheeled electric vehicle, characterized in that, The fast charging system for two-wheeled electric vehicles as described in any one of claims 1 to 4 includes the following steps: The ambient temperature outside the vehicle is acquired by the ambient temperature acquisition unit. Acquire multiple grouped cell temperatures collected by multiple cell temperature acquisition units; The internal cell uniform temperature is determined based on the temperatures of the multiple grouped cells. Determine the temperature difference between the external ambient temperature and the internal battery cell temperature; Based on the internal and external temperature difference, the basic interval time for charging and patrol is determined. When the external ambient temperature is lower than the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the longer the basic interval time for charging and patrol. When the external ambient temperature is higher than or equal to the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the shorter the basic interval time for charging and patrol. At each interval of the basic charging cycle time, one of the independent charging circuits is controlled to charge the corresponding blade battery group, and the multiple independent charging circuits complete the charging of the corresponding blade battery group in a preset cycle order, wherein the preset cycle order is used to indicate the order in which the multiple blade battery groups are charged in cycles.

6. The fast charging method for a two-wheeled electric vehicle according to claim 5, characterized in that, Also includes: When the cell temperature of the current blade battery group reaches the preset cell temperature warning threshold, the charging current of the next blade battery group in the preset cycle sequence is gradually increased, while the charging current of the current blade battery group is gradually decreased, so as to complete the switching and adjustment of the independent charging circuit.

7. The fast charging method for a two-wheeled electric vehicle according to claim 5, characterized in that, Also includes: A preset heat dissipation monitoring cycle is used to execute the heat dissipation monitoring strategy in an interrupt manner. The heat dissipation monitoring strategy includes: Acquire multiple grouped cell temperatures collected by multiple cell temperature acquisition units; The cell cooling rate of each blade battery group is determined based on the cell temperature of each group corresponding to each blade battery group. If the cell cooling rate of the blade battery group in the previous iteration is less than the preset cell cooling warning threshold, reduce the output power of the independent charging circuit corresponding to the current blade battery group and extend the basic interval time of the charging cycle corresponding to the current blade battery group.

8. The fast charging method for a two-wheeled electric vehicle according to claim 5, characterized in that, The fast charging system for the two-wheeled electric vehicle also includes a power regulation unit electrically connected to the main control unit; The fast charging method for two-wheeled electric vehicles also includes: When the cell temperature rise rate of the current blade battery group reaches a preset cell temperature rise warning threshold, the power regulation unit is controlled to reduce the output power to the corresponding independent charging circuit.

9. A fast charging device for a two-wheeled electric vehicle, characterized in that, The fast charging device for a two-wheeled electric vehicle, as described in any one of claims 1 to 4, comprises: The ambient temperature acquisition module is used to acquire the outside ambient temperature of the vehicle collected by the ambient temperature acquisition unit. The cell temperature acquisition module is used to acquire the temperatures of multiple groups of cells collected by multiple cell temperature acquisition units; A temperature uniformity determination module is used to determine the internal cell uniformity based on the temperatures of the multiple grouped cells. The temperature difference determination module is used to determine the internal and external temperature difference between the external ambient temperature and the internal battery cell temperature. The cycle determination module is used to determine the basic interval time of charging cycle based on the internal and external temperature difference. When the external ambient temperature is lower than the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the longer the basic interval time of charging cycle. When the external ambient temperature is higher than or equal to the internal average temperature of the battery cells, the larger the absolute value of the internal and external temperature difference, the shorter the basic interval time of charging cycle. The charging control module is used to control one of the independent charging circuits to charge the corresponding blade battery group at each charging cycle basic interval, and to enable multiple independent charging circuits to complete the charging of the corresponding blade battery group in a preset cycle order, wherein the preset cycle order is used to indicate the order in which the multiple blade battery groups are charged in cycles.

10. An electronic device, characterized in that, The electronic device includes a processor and a memory storing computer program instructions; When the processor executes the computer program, it implements the fast charging method for two-wheeled electric vehicles as described in any one of claims 5 to 8.

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