Vehicle quick charging method and system, storage medium and equipment

Abstract

The invention provides a quick charging method and system for a vehicle, a storage medium and equipment, and the method comprises the steps: carrying out the quick heating of a battery pack in three different heating modes when the overall temperature of the battery pack is-20 DEG C to-10 DEG C,-10 DEG C to 0 DEG C and 0 DEG C to 10 DEG C through stage-type temperature rise control, in the process, the temperature is well managed and controlled, the corresponding temperature interval can be found according to the overall temperature fed back by the current battery pack, the main emission unit and the auxiliary emission unit on the dual-frequency microwave module are correspondingly awakened to conduct switching heating operation, targeted heating operation is accurately conducted on the batteries in different temperature states, and the heating efficiency is improved. The problem that the service life of the battery is affected due to unstable temperature change in the temperature rise process of the battery caused by the fact that self-adaptive temperature adjustment cannot be implemented according to the current temperature rise condition of the battery at present is solved.

Description

Technical Field

[0001] The present invention relates to the field of new energy charging technology, and in particular to a vehicle fast charging method, system, storage medium and device. Background Art

[0002] With the rapid development of the new energy vehicle market, battery charging speed and performance in low-temperature environments have become key issues limiting product competitiveness. To address challenges such as insufficient temperature, large temperature differences, and sluggish internal ion migration when charging battery packs in extremely low temperatures, the industry has proposed heating solutions using microwave radiation and high-thermal-conductivity materials (such as graphene and its composites).

[0003] Traditional low-temperature charging heating solutions mainly use heating elements such as PTC, which can only act on the surface of the battery. It usually takes about 15 minutes for the battery to reach a safe charging temperature. Some solutions use fixed-frequency (such as 2450MHz) microwave radiation combined with a designed resonant cavity. Although it can achieve a certain degree of internal heating, due to insufficient energy focusing and a single heat transfer mechanism, the temperature difference inside the battery is generally greater than 8°C. At the same time, it is impossible to implement adaptive temperature adjustment according to the current battery temperature rise, resulting in unstable temperature changes during the battery heating process, causing excessive heating or temperature stagnation, which affects the battery life. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide a vehicle fast charging method, system, storage medium and device to solve the problem in the prior art that it is impossible to implement adaptive temperature adjustment according to the current battery temperature rise, resulting in unstable temperature changes during the battery heating process, which affects the battery service life.

[0005] A vehicle fast charging method according to an embodiment of the present invention includes: Obtaining current battery pack temperature information, switching the vehicle from a powered-off state to a powered-on state, and determining whether the temperature information meets a preset temperature condition; If so, waking up the dual-frequency microwave module, acquiring the temperature status information of the battery pack in real time, and determining whether the temperature status information satisfies at least one preset temperature range; If so, the dual-frequency microwave modules are controlled in sequence to perform adaptive switching adjustments according to the preset control conditions corresponding to the preset temperature range, so that the battery pack temperature rises steadily within a preset time.

[0006] Furthermore, the dual-frequency microwave module includes at least a main transmitting unit adopting 2450 MHz microwave transmission and an auxiliary transmitting unit adopting 915 MHz low-frequency control.

[0007] Furthermore, the temperature status information includes at least the current temperature information of the battery pack and the heating rate of the battery pack per degree Celsius during the heating process. The preset temperature range includes at least the current temperature range of the battery pack after the vehicle is powered on, which are between -20°C to -10°C, -10°C to 0°C, and 0°C to 10°C respectively.

[0008] Furthermore, the steps of obtaining current battery pack temperature information, switching the vehicle from a power-off state to a power-on state, and determining whether the temperature information meets a preset temperature condition include: The temperature information of the battery pack is obtained, the vehicle is switched from a power-off state to a power-on state, and it is determined whether the temperature information is lower than 0°C.

[0009] Furthermore, the steps of waking up the dual-frequency microwave module, acquiring temperature status information of the battery pack in real time, and determining whether the temperature status information satisfies a plurality of preset temperature ranges include: Waking up the dual-frequency microwave module, acquiring temperature status information of the battery pack in real time, and determining whether the temperature status information satisfies a temperature range of -20°C to -10°C, -10°C to 0°C, and 0°C to 10°C; If so, continue to obtain the heating rate, and determine whether the heating rate meets the preset heating rate corresponding to the temperature range; If so, the dual-frequency microwave modules are controlled in sequence to perform adaptive switching adjustments according to the preset control conditions corresponding to the preset temperature range, so that the battery pack temperature rises steadily within a preset time.

[0010] Furthermore, the step of continuously acquiring the heating rate and determining whether the heating rate satisfies a preset heating rate corresponding to the temperature range further includes: If not, retrieve the abnormal heating rate and the participation information of the current dual-frequency microwave module; Determining whether the abnormal heating rate is greater than the preset heating rate; If so, it is determined that the current heating rate of the battery pack is high, and the heating rate difference between the abnormal heating rate and the preset heating rate is calculated. The participation time of the main emission unit is shortened and the participation time of the auxiliary emission unit is extended according to the heating rate difference to balance the heating rate.

[0011] Furthermore, the step of determining whether the abnormal heating rate is greater than the preset heating rate further includes: Determining whether the abnormal heating rate is greater than the preset heating rate; If not, it is determined that the current heating rate of the battery pack is low, and the heating rate difference between the abnormal heating rate and the preset heating rate is calculated. The participation time of the main emission unit is extended and the participation time of the auxiliary emission unit is shortened according to the heating rate difference to balance the heating rate.

[0012] Furthermore, the correlation formulas among the abnormal heating rate, the preset heating rate, the heating rate difference and the participation information of the dual-frequency microwave module are respectively: Heating rate difference: ; New participation time: ; in, : Heating rate difference; : Abnormal heating rate; : Preset heating rate; : high frequency coefficient; : low frequency coefficient; : New high frequency duration; : New low frequency duration; : total period; : initial high frequency duration; : Initial low frequency duration.

[0013] The present invention also provides a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned vehicle fast charging method when executed by a processor.

[0014] The present invention also proposes a vehicle fast charging device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, to implement the above-mentioned vehicle fast charging method.

[0015] Compared with the existing technology: The present invention proposes a vehicle fast charging method, which uses three different heating methods to implement rapid heating of the battery pack through staged heating based on the overall temperature of the battery pack being at -20℃ to -10℃, -10℃ to 0℃, and 0℃ to 10℃, respectively. The temperature has good control strength during the process. According to the overall temperature feedback from the current battery pack, the corresponding temperature range can be found and the main transmitting unit and the auxiliary transmitting unit on the dual-frequency microwave module can be awakened to switch the heating operation. Targeted heating operations are accurately implemented for batteries under different temperature conditions, which solves the current problem of being unable to implement adaptive temperature adjustment according to the current battery temperature rise, resulting in unstable temperature changes during the battery heating process, affecting the battery service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of a vehicle fast charging method according to a first embodiment of the present invention; Figure 2 is a flow chart of a vehicle fast charging method according to a second embodiment of the present invention; Figure 3 FIG. 4 is a structural block diagram of a vehicle fast charging system according to a fourth embodiment of the present invention.

[0017] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0018] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Example 1 See also Figure 1 , which shows a vehicle fast charging method in a first embodiment of the present invention, and the method specifically includes steps S01 to S03.

[0022] Step S01, obtain the current temperature information of the battery pack, switch the vehicle from the power-off state to the power-on state, and determine whether the temperature information meets the preset temperature condition. If so, execute step S02.

[0023] In step S02 , the dual-frequency microwave module is awakened, and the temperature status information of the battery pack is obtained in real time. It is determined whether the temperature status information satisfies at least one preset temperature range. If so, step S03 is executed.

[0024] In step S03 , according to the preset control conditions corresponding to the preset temperature range, the dual-frequency microwave modules are controlled in sequence to perform adaptive switching adjustments so that the temperature of the battery pack rises steadily within a preset time.

[0025] The specific implementation of steps S01 to S03 is based on step S01, and the battery pack temperature information is obtained in real time through the vehicle control network. Before the user connects the vehicle charger and wakes up the vehicle charging state to switch from the power-off state to the power-on state, the vehicle control network first determines whether the current battery pack temperature information is lower than 0°C. If so, step S02 is executed to preferentially wake up the dual-frequency microwave module before the vehicle switches to the power-on state, and then the vehicle is switched to the power-on state. In some optional embodiments, in order to ensure the accuracy of temperature sensing, multiple temperature sensors can also be arranged to form a temperature monitoring network at key positions of the charging gun and the battery pack, which can provide real-time feedback on the internal temperature and temperature difference of the battery, and intelligently adjust the microwave output power and operating frequency through the feedback signal to achieve the optimal heating effect, so as to accurately obtain the battery pack temperature status information. Afterwards, it is determined whether the temperature status information is in any preset temperature range between -20°C and -10°C, -10°C to 0°C, and 0°C to 10°C. If it meets the requirements, the preset control conditions corresponding to the preset temperature range are used. The secondary controlled dual-frequency microwave module implements adaptive switching adjustment. The characteristics of the main transmitting unit for 2450 MHz microwave transmission and the auxiliary transmitting unit for 915 MHz low-frequency control are described. The high-frequency 2450 MHz has shallow penetration but high power density, enabling rapid heating of the battery pack surface. The low-frequency 915 MHz has deep penetration but low power density, ensuring battery pack safety while providing internal heating, but at a slower heating rate. The present application aims to raise the overall battery pack temperature from -20°C to 10°C in 3-4 minutes, which is difficult to achieve with a single dual-frequency microwave module and can easily lead to a large temperature difference between the inside and outside of the battery pack. Therefore, in some optional embodiments of the present invention, to improve the conduction rate and effectiveness of heat energy between the battery packs within the battery pack, an ultra-thin (approximately 0.01 mm) composite coating can be applied between the battery electrodes on each battery pack. This coating primarily consists of graphene oxide and carbon nanotubes. A highly thermally conductive nanofiller (such as boron nitride or metal nanoparticles) can be added as needed to achieve a three-dimensional thermal network using a multi-scale structure.This coating can not only efficiently conduct the heat energy generated by microwaves, reducing the temperature difference inside the battery to within 2-5°C, but also its good electrical conductivity promotes the rapid migration of lithium ions in the battery, and the rapid coverage of heat energy, further improving the charging efficiency. In addition, based on the preset temperature ranges of -20°C to -10°C, -10°C to 0°C, and 0°C to 10°C, the preset control conditions of the main transmitting unit and the auxiliary transmitting unit, that is, the proportion of each participating in heating at different stages, in this application, the preset control conditions corresponding to the preset temperature ranges are -20°C to -10°C and the main transmitting unit is used for rapid heating throughout the process. Rapid temperature increase. During this process, the power of the main transmitting unit is 3kw, the surface temperature rise rate of the battery pack is 10℃ / min, and the internal temperature rise rate is 5℃ to 7℃ / min. The heating time of this stage is 0.5min, and the temperature difference between the inside and outside of the battery pack is 3-5℃. Then the temperature of the battery pack is lowered from -10℃ to 0℃. During this process, the auxiliary transmitting unit participates in the whole process. The power of the auxiliary transmitting unit is 5kw. The overall temperature of the battery pack is balanced and the overall temperature rise rate is 3℃ to 5℃ / min. The heating time is 1.5min, and the temperature difference between the inside and outside of the battery pack is less than or equal to 3℃. Finally, the overall temperature rise stage is entered. From 0℃ to 10℃, the main transmitting unit and the auxiliary transmitting unit are woken up at the same time. During the process, the power of the main transmitting unit and the auxiliary transmitting unit are adjusted to 4kw and 3kw respectively. The overall heating rate of the battery pack is 10℃ / min, the heating time is 1min, the temperature difference between the inside and outside of the battery pack is less than 2℃, and the battery pack finally reaches the optimal charging temperature. At the same time, the staged heating proposed in this application is based on the overall temperature of the battery pack being at -20℃ to -10℃, -10℃ to 0℃, and 0℃ to 10℃, respectively. Three different heating methods are used to implement rapid heating of the battery pack, and the temperature has good control strength during the process. According to the overall temperature feedback of the current battery pack, the corresponding temperature range can be found and the main transmitting unit and auxiliary transmitting unit on the dual-band microwave module can be woken up accordingly. The unit switches the heating operation. In addition, in some optional embodiments of the present invention, in order to ensure that the maximum temperature rise time of the battery pack is within 3 minutes while further reducing the temperature difference between the inside and outside of the battery pack, the main transmitting unit and the auxiliary transmitting unit can be awakened. When the main transmitting unit works independently, the auxiliary transmitting unit can be awakened intermittently, and when the auxiliary transmitting unit works independently, the main transmitting unit can be awakened intermittently to implement intermittent collaborative operations, such as waking up once every 3 seconds, and the wake-up time is 2 seconds, so as to achieve auxiliary heating operation when the temperature inside and outside the battery pack is within a controllable range. While ensuring that the battery pack heating time is within 3 minutes, the temperature difference between the inside and outside of the battery pack can also be reduced to improve the overall temperature rise quality of the battery pack, shorten the temperature difference between the inside and outside to ensure the battery life.

[0026] In summary, the vehicle fast charging method in the above embodiment, through staged temperature control, adopts three different heating methods to implement rapid heating of the battery pack when the overall temperature of the battery pack is respectively between -20℃ and -10℃, -10℃ and 0℃ to 10℃, and has good control strength over the temperature during the process. According to the overall temperature currently fed back by the battery pack, the corresponding temperature range can be found and the main transmitting unit and the auxiliary transmitting unit on the dual-frequency microwave module can be awakened to switch the heating operation. Targeted heating operations are accurately implemented for batteries under different temperature conditions, which solves the current problem of being unable to implement adaptive temperature adjustment according to the current battery temperature rise, resulting in unstable temperature changes during the battery heating process, affecting the battery life.

[0027] Example 2 See also Figure 2 , which shows a vehicle fast charging method in a second embodiment of the present invention, and the method specifically includes steps S11 to S18.

[0028] Step S11, obtain the temperature information of the battery pack, switch the vehicle from the power-off state to the power-on state, and determine whether the temperature information is lower than 0°C. If yes, execute step S12.

[0029] Step S12, wake up the dual-frequency microwave module, and obtain the temperature status information of the battery pack in real time, and determine whether the temperature information meets the temperature ranges of -20℃ to -10℃, -10℃ to 0℃, and 0℃ to 10℃. If so, execute step S13.

[0030] Step S13, continuously obtaining the heating rate, and determining whether the heating rate satisfies the preset heating rate of the corresponding temperature range. If so, step S14 is executed; if not, step S15 is executed.

[0031] Step S14 , controlling the dual-frequency microwave modules in sequence to implement adaptive switching adjustments according to preset control conditions corresponding to the preset temperature range, so that the battery pack temperature rises steadily within a preset time.

[0032] Step S15: retrieve the abnormal heating rate and the participation information of the current dual-frequency microwave module.

[0033] Step S16, determining whether the abnormal heating rate is greater than the preset heating rate, if so, executing step S17, if not, executing step S18.

[0034] In step S17, it is determined that the current battery pack has a high temperature rise rate, and the temperature rise rate difference between the abnormal temperature rise rate and the preset temperature rise rate is calculated. The participation time of the main emission unit is shortened and the participation time of the auxiliary emission unit is extended according to the temperature rise rate difference to balance the temperature rise rate.

[0035] In step S18, it is determined that the current temperature rise rate of the battery pack is low, and the temperature rise rate difference between the abnormal temperature rise rate and the preset temperature rise rate is calculated. The participation time of the main emission unit is extended and the participation time of the auxiliary emission unit is shortened according to the temperature rise rate difference to balance the temperature rise rate.

[0036] Based on the specific implementation of steps S15 to S18, that is, based on the continuous acquisition of the heating rate in step S13, and the implementation step of determining whether the heating rate satisfies the preset heating rate in the corresponding temperature range, the abnormal heating rate and the participation information of the current dual-frequency microwave module are retrieved, wherein the battery pack temperature is between 0°C and 10°C for example. In this state, the main transmitting unit and the auxiliary transmitting unit participate at the same time (the participation information of the dual-frequency microwave module), and the overall heating rate of the battery pack is 10°C / min (the preset heating rate). Temperatures less than or exceeding the heating rate range are uniformly determined to be abnormal heating. Rate, and step S15 is used to monitor the temperature of the current battery pack during the heating process to prevent the temperature from rising too fast during the heating process, exceeding the battery temperature tolerance range and affecting the battery life, or the temperature from rising too slowly and stagnating, resulting in slow charging of the battery pack. Then, step S16 is used to determine whether the abnormal heating rate is greater than the preset heating rate. The purpose is to determine whether the current battery pack has a high heating rate that causes battery overheating or a low heating rate that causes reduced battery charging efficiency, and to implement targeted processing. For example, step S17 determines that the current battery pack's heating rate is high, and calculates the heating rate difference between the abnormal heating rate and the preset heating rate: ,in, : Heating rate difference; : Abnormal heating rate; : Preset the heating rate. After that, shorten the main transmitting unit's participation time and extend the auxiliary transmitting unit's participation time according to the heating rate difference, through the formula: ,in: : High frequency coefficient, the preset parameter is 12℃ / min; : Low frequency coefficient, the preset parameter is 4℃ / min; : New high frequency duration (main transmitting unit); : New low frequency duration (auxiliary transmitting unit); : Total cycle (the total duration of this phase); : initial high frequency duration; : The initial low-frequency duration, and respectively calculate the duration of the current main transmitting unit and the auxiliary transmitting unit in the heating process, and obtain the corresponding duration ratio, such as 60% of the main transmitting unit participation duration and 40% of the auxiliary transmitting unit participation duration. If there is an abnormal battery pack temperature rise in this state, it is necessary to reduce the main transmitting unit participation duration, and increase the auxiliary transmitting unit participation duration according to the reduction ratio of the main transmitting unit. In some optional embodiments, it can be an equal adjustment of every 5% or every 10%, and after the adjustment, the current battery pack temperature change is judged in real time until it meets the preset heating rate and then maintains the current state, or based on the power adjustment of the main transmitting unit and the auxiliary transmitting unit, if the heating rate is high and an abnormality occurs, the output power of the main transmitting unit and the auxiliary transmitting unit is correspondingly reduced, and step S18 is the same as the above adjustment operation, and a balanced adjustment of the heating rate is achieved. In summary, the vehicle fast charging method in the above embodiment is different from Example 1 in that, in order to further improve the stability of the temperature rise during the battery pack heating process and minimize the temperature difference between the inside and outside of the battery pack during the heating process, the battery pack heating rate is analyzed, and the participation time of the current main transmitting unit and the auxiliary transmitting unit in the heating process is calculated respectively, and the corresponding time ratio is obtained. Based on the ratio and the abnormal heating rate, an adaptive participation time adjustment is implemented to achieve the purpose of balanced adjustment of the heating rate.

[0037] Example 3 Another aspect of the present invention is to provide a vehicle fast charging system. Figure 3 , the system includes: An acquisition and judgment module 11 is used to obtain the current temperature information of the battery pack, switch the vehicle from a power-off state to a power-on state, and determine whether the temperature information meets a preset temperature condition. If so, the first execution module is executed; The first execution module 12 is used to wake up the dual-frequency microwave module, obtain the temperature status information of the battery pack in real time, and determine whether the temperature status information meets multiple preset temperature rise state intervals. If so, execute the second execution module; The second execution module 13 is used to control the dual-frequency microwave modules to perform adaptive switching adjustments in sequence according to preset control conditions corresponding to the preset temperature range, so that the battery pack temperature rises steadily within a preset time.

[0038] Example 4 Another aspect of the present invention further provides a readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any one of the above-mentioned embodiments 1 to 2.

[0039] Example 5 On the other hand, the present invention also provides a vehicle fast charging device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of the method described in any one of the above-mentioned embodiments one to two are implemented.

[0040] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] Those skilled in the art will appreciate that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device.

[0042] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic devices), a portable computer disk cartridge (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disc read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting, or processing it in another suitable manner as necessary, and then storing it in a computer memory.

[0043] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware or a combination thereof.

[0044] In the above-described embodiments, multiple steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one or a combination of the following technologies known in the art may be used: a discrete logic circuit having logic gate circuits for implementing logic functions on data signals, an application-specific integrated circuit having suitable combinational logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc.

[0045] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0046] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A vehicle fast charging method, characterized in that: The method comprises: Obtaining current battery pack temperature information, switching the vehicle from a powered-off state to a powered-on state, and determining whether the temperature information meets a preset temperature condition; If so, waking up the dual-frequency microwave module, acquiring the temperature status information of the battery pack in real time, and determining whether the temperature status information satisfies at least one preset temperature range; If so, the dual-frequency microwave modules are controlled in sequence to perform adaptive switching adjustments according to the preset control conditions corresponding to the preset temperature range, so that the battery pack temperature rises steadily within a preset time.

2. The vehicle fast charging method according to claim 1, characterized in that: The dual-frequency microwave module at least includes a main transmitting unit using 2450MHz microwave transmission and an auxiliary transmitting unit using 915MHz low-frequency control.

3. The vehicle fast charging method according to claim 2, characterized in that: The temperature status information includes at least the current temperature information of the battery pack and the heating rate of the battery pack per degree Celsius during the heating process. The preset temperature range includes at least the current temperature range of the battery pack after the vehicle is powered on, which is between -20℃ to -10℃, -10℃ to 0℃, and 0℃ to 10℃ respectively.

4. The vehicle fast charging method according to claim 3, characterized in that: The steps of waking up the dual-frequency microwave module, acquiring the temperature status information of the battery pack in real time, and determining whether the temperature status information satisfies a plurality of preset temperature ranges include: Waking up the dual-frequency microwave module, acquiring temperature status information of the battery pack in real time, and determining whether the temperature status information satisfies a temperature range of -20°C to -10°C, -10°C to 0°C, and 0°C to 10°C; If so, continue to obtain the heating rate, and determine whether the heating rate meets the preset heating rate corresponding to the temperature range; If so, the dual-frequency microwave modules are controlled in sequence to perform adaptive switching adjustments according to the preset control conditions corresponding to the preset temperature range, so that the battery pack temperature rises steadily within a preset time.

5. The vehicle fast charging method according to claim 4, characterized in that: The step of continuously acquiring the heating rate and determining whether the heating rate satisfies a preset heating rate corresponding to the temperature range further includes: If not, retrieve the abnormal heating rate and the participation information of the current dual-frequency microwave module; Determining whether the abnormal heating rate is greater than the preset heating rate; If so, it is determined that the current heating rate of the battery pack is high, and the heating rate difference between the abnormal heating rate and the preset heating rate is calculated. The participation time of the main emission unit is shortened and the participation time of the auxiliary emission unit is extended according to the heating rate difference to balance the heating rate.

6. The vehicle fast charging method according to claim 5, characterized in that: The step of determining whether the abnormal heating rate is greater than the preset heating rate further includes: Determining whether the abnormal heating rate is greater than the preset heating rate; If not, it is determined that the current heating rate of the battery pack is low, and the heating rate difference between the abnormal heating rate and the preset heating rate is calculated. The participation time of the main emission unit is extended and the participation time of the auxiliary emission unit is shortened according to the heating rate difference to balance the heating rate.

7. The vehicle fast charging method according to claim 6, characterized in that: The correlation formulas between the abnormal heating rate, the preset heating rate, the heating rate difference and the participation information of the dual-frequency microwave module are respectively: Heating rate difference: ; New participation time: ; in, : Heating rate difference; : Abnormal heating rate; : Preset heating rate; : high frequency coefficient; : low frequency coefficient; : New high frequency duration; : New low frequency duration; : total period; : initial high frequency duration; : Initial low frequency duration.

8. A vehicle fast charging system, characterized in that: The system comprises: an acquisition and judgment module, configured to obtain current battery pack temperature information, switch the vehicle from a power-off state to a power-on state, and determine whether the temperature information meets a preset temperature condition, and if so, execute the first execution module; a first execution module, configured to wake up the dual-frequency microwave module, simultaneously obtain temperature status information of the battery pack in real time, and determine whether the temperature status information satisfies at least one preset temperature range, and if so, execute the second execution module; The second execution module is used to control the dual-frequency microwave modules to implement adaptive switching adjustment in sequence according to the preset control conditions corresponding to the preset temperature range, so that the battery pack temperature rises steadily within a preset time.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the vehicle fast charging method according to any one of claims 1 to 7 is implemented.

10. A vehicle fast charging device, characterized in that: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for rapid charging a vehicle as claimed in any one of claims 1 to 7 is implemented.

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