A vehicle fast charging method, system, storage medium and device

Abstract

The application provides a vehicle rapid charging method, system, storage medium and equipment, the method comprises the following steps: through stage heating control, when the overall temperature of the battery pack is in the range of-20 DEG C to-10 DEG C, -10 DEG C to 0 DEG C and 0 DEG C to 10 DEG C, three different heating modes are used to implement rapid heating of the battery pack, and the temperature is well controlled in the process, the corresponding temperature interval can be found according to the overall temperature feedback of the current battery pack, and the main transmitting unit and the auxiliary transmitting unit on the double-frequency microwave module are switched and heated, the battery in different temperature states is accurately heated, and the problem that the current battery temperature rising condition cannot be used for adaptive temperature regulation, so that the temperature change is unstable during the battery heating process and the service life of the battery is affected is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy charging technology, in particular to a vehicle fast charging method, system, storage medium and equipment. BACKGROUND

[0002] With the rapid development of new energy vehicle market, the battery charging speed and the battery performance under low temperature environment become the key problem restricting product competitiveness. In view of the problems of "insufficient temperature, too large temperature difference and internal ion migration delay" of the battery pack when charging under extremely low temperature, the industry proposes a scheme of using microwave radiation to generate heat effect and heating with high thermal conductivity materials (such as graphene and its composite materials).

[0003] The traditional low-temperature charging heating scheme mainly uses PTC and other heating elements, which can only act on the surface layer of the battery. It usually takes about 15 minutes to make the battery reach a safe charging temperature. Some schemes use fixed frequency (such as 2450MHz) microwave radiation combined with a designed resonant cavity. Although it can achieve a certain degree of internal heating, the energy focusing is insufficient and the heat transfer mechanism is single, so that the internal temperature difference of the battery is generally greater than 8℃. At the same time, it cannot implement adaptive temperature regulation according to the current battery temperature rising situation, which may cause unstable temperature change during the battery warming process, resulting in problems such as too fast warming or temperature stagnation, affecting the service life of the battery. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a vehicle fast charging method, system, storage medium and equipment, which can solve the problem that the prior art cannot implement adaptive temperature regulation according to the current battery temperature rising situation, which may cause unstable temperature change during the battery warming process, affecting the service life of the battery.

[0005] The vehicle fast charging method according to an embodiment of the present application, the method comprises:

[0006] Obtaining temperature information of a current battery pack, switching the vehicle from a power-off state to a power-on state, and determining whether the temperature information meets a preset temperature condition;

[0007] If yes, wake up a dual-frequency microwave module, and simultaneously obtain temperature state information of the battery pack in real time, and determine whether the temperature state information meets at least one preset temperature interval;

[0008] If yes, according to a preset control condition corresponding to the preset temperature interval, sequentially control the dual-frequency microwave module to implement adaptive switching adjustment, so that the temperature of the battery pack stably rises within a preset time.

[0009] Further, the dual-frequency microwave module comprises at least a main emission unit emitting 2450MHz microwave and an auxiliary emission unit emitting 915MHz low-frequency regulation.

[0010] Further, the temperature state information comprises at least current temperature information of the battery pack and temperature rising rate of the battery pack per degree Celsius during temperature rising process, and the preset temperature interval comprises at least temperature interval of the battery pack after the vehicle is powered on, which is between-20℃ to-10℃, -10℃ to 0℃ and 0℃ to 10℃ respectively.

[0011] Further, the step of obtaining the temperature information of the current battery pack, switching the vehicle from powered-off state to powered-on state and judging whether the temperature information meets the preset temperature condition comprises:

[0012] obtaining the temperature information of the battery pack, switching the vehicle from powered-off state to powered-on state and judging whether the temperature information is lower than 0℃.

[0013] Further, the step of then waking up the dual-frequency microwave module and simultaneously obtaining the temperature state information of the battery pack in real time and judging whether the temperature state information meets the preset temperature interval comprises:

[0014] waking up the dual-frequency microwave module, simultaneously obtaining the temperature state information of the battery pack in real time and judging whether the temperature state information meets the temperature interval between-20℃ to-10℃, -10℃ to 0℃ and 0℃ to 10℃;

[0015] If yes, continuously obtaining the temperature rising rate and judging whether the temperature rising rate meets the preset temperature rising rate corresponding to the temperature interval;

[0016] If yes, according to the preset control condition corresponding to the preset temperature interval, the dual-frequency microwave module is controlled to implement adaptive switching adjustment in sequence, so that the temperature of the battery pack is stably rising within the preset time.

[0017] Further, the step of continuously obtaining the temperature rising rate and judging whether the temperature rising rate meets the preset temperature rising rate corresponding to the temperature interval further comprises:

[0018] If no, the abnormal temperature rising rate and the participation information of the current dual-frequency microwave module are called;

[0019] judging whether the abnormal temperature rising rate is greater than the preset temperature rising rate;

[0020] If yes, it is determined that the temperature rising rate of the current battery pack is high, and a temperature rising rate difference between the abnormal temperature rising rate and the preset temperature rising rate is calculated, the main transmitting unit participation duration is correspondingly shortened and the auxiliary transmitting unit participation duration is correspondingly lengthened according to the temperature rising rate difference, so as to balance the temperature rising rate.

[0021] Further, the step of judging whether the abnormal temperature rising rate is greater than the preset temperature rising rate further comprises:

[0022] judging whether the abnormal temperature rising rate is greater than the preset temperature rising rate;

[0023] If no, it is determined that the temperature rising rate of the current battery pack is low, and a temperature rising rate difference between the abnormal temperature rising rate and the preset temperature rising rate is calculated, the main transmitting unit participation duration is correspondingly lengthened and the auxiliary transmitting unit participation duration is correspondingly shortened according to the temperature rising rate difference, so as to balance the temperature rising rate.

[0024] Further, the correlation formula between the abnormal temperature rising rate, the preset temperature rising rate, the temperature rising rate difference and the participation information of the dual-frequency microwave module is respectively:

[0025] Temperature rising rate difference: ;

[0026] New participation duration: ;

[0027] Wherein, : temperature rising rate difference; : abnormal temperature rising rate; : preset temperature rising 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.

[0028] The application further provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the vehicle fast charging method.

[0029] The application further provides a vehicle fast charging device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and realizes the vehicle fast charging method.

[0030] Compared with the prior art: the present application proposes a vehicle rapid charging method, by stage heating, based on the overall temperature of the battery pack being-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 is well controlled during the process, according to the overall temperature feedback of the current battery pack, the corresponding temperature interval is found and the main and auxiliary transmitting units on the double-frequency microwave module are switched to heating operation, accurate heating operation is carried out on the battery under different temperature conditions, which solves the problem that the current temperature cannot be adjusted adaptively according to the current battery temperature rise, which may cause unstable temperature change during the battery heating process, affecting the service life of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Flow chart of the vehicle rapid charging method in the first embodiment of the present application;

[0032] Figure 2 Flow chart of the vehicle rapid charging method in the second embodiment of the present application;

[0033] Figure 3 Structure block diagram of the vehicle rapid charging system in the fourth embodiment of the present application.

[0034] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. Several embodiments of the present application are shown in the drawings. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the specification of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0038] Embodiment One

[0039] Referring to Figure 1 , a vehicle rapid charging method in the first embodiment of the present application is shown, and the method specifically includes steps S01-S03.

[0040] In step S01, the temperature information of the current battery pack is obtained, the vehicle is switched from the power-off state to the power-on state, and it is determined whether the temperature information meets the preset temperature condition. If yes, step S02 is executed.

[0041] In step S02, the dual-frequency microwave module is woken up, and the temperature state information of the battery pack is obtained in real time. It is determined whether the temperature state information meets at least one preset temperature interval. If yes, step S03 is executed.

[0042] In step S03, according to the preset control condition corresponding to the preset temperature interval, the dual-frequency microwave module is sequentially controlled to implement adaptive switching adjustment, so that the temperature of the battery pack stably rises within a preset time.

[0043] The specific implementation of steps S01 to S03 is based on step S01, real-time acquisition of battery pack temperature information through the vehicle control network, and prior to the user connecting the vehicle charger and waking 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 DEG C. If yes, step S02 is executed, the dual-frequency microwave module is preferentially woken up 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 the temperature sensor, a plurality of temperature sensors can also be arranged to form a temperature monitoring network at the key positions of the charging gun and the battery pack, which can real-time feedback the internal temperature and temperature difference of the battery, and intelligently adjust the microwave output power and working frequency through the feedback signal, so as to realize the optimal heating effect, and accurately realize the acquisition of the battery pack temperature state information. Then, it is determined whether the temperature state information is in any one of the preset temperature intervals of-20 DEG C to-10 DEG C, -10 DEG C to 0 DEG C, and 0 DEG C to 10 DEG C. If it is, the dual-frequency microwave module is sequentially controlled to implement adaptive switching adjustment according to the preset control conditions of the corresponding preset temperature interval. The characteristics of the main emission unit of 2450MHz microwave emission and the auxiliary emission unit of 915MHz low-frequency regulation are explained. The high-frequency 2450MHz has shallow penetration but high power density, which can realize rapid heating of the surface of the battery pack. The low-frequency 915MHz has deep penetration but low power density, which can ensure the safety of the battery pack while penetrating the internal heating of the battery pack, but the heating rate is relatively low. In order to realize the lifting of the overall temperature of the battery pack from-20 DEG C to 10 DEG C in 3-4 minutes, it is difficult to realize only by a single dual-frequency microwave module, and it is easy to cause the case that the temperature difference between the inside and outside of the battery pack is too large. Therefore, in some optional embodiments of the present application, in order to improve the conduction rate and effect of heat energy between each battery group in the battery pack, a super-thin (about 0.01 millimeter) composite coating can also be coated between the battery poles of each battery group. The main components of the coating are graphene oxide and carbon nanotubes, and a high-thermal-conductivity nano-filler (such as boron nitride or metal nanoparticles) can be added as needed. A three-dimensional thermal conduction network is constructed by using a multi-scale structure.The coating not only can efficiently conduct the heat energy generated by microwaves to reduce the temperature difference inside the battery to within 2-5°C, but also promotes the rapid migration of lithium ions in the battery and the rapid coverage of heat energy to further improve the charging efficiency. In addition, based on the preset temperature intervals of -20°C to -10°C, -10°C to 0°C, and 0°C to 10°C, the preset control conditions of the main emitting unit and the auxiliary emitting 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 intervals are -20°C to -10°C, the main emitting unit is used throughout the process to quickly raise the temperature, in this process, the power of the main emitting unit is 3kw, the surface temperature rising rate of the battery pack is 10°C / min, the internal temperature rising rate is 5-7°C / min, the heating time of this stage is 0.5min, the temperature difference inside and outside the battery pack is 3-5°C, then the temperature of the battery pack is increased from -10°C to 0°C, in this process, the auxiliary emitting unit participates throughout the process, the power of the auxiliary emitting unit is 5kw, the overall temperature of the battery pack is balanced and the overall temperature rising rate is 3-5°C / min, the heating time is 1.5min, the temperature difference inside and outside the battery pack is less than or equal to 3°C, finally the overall temperature rising stage is from 0°C to 10°C, the main emitting unit and the auxiliary emitting unit are awakened at the same time, in the process, the power of the main emitting unit and the auxiliary emitting unit is adjusted to 4kw and 3kw respectively, the overall temperature rising rate of the battery pack is 10°C / min, the heating time is 1min, the temperature difference inside and outside the battery pack is less than 2°C, and finally the battery pack reaches the optimal charging temperature. At the same time, the stage type temperature rising proposed in this application adopts three different heating methods to implement the rapid heating of the battery pack when the overall temperature of the battery pack is respectively in the temperature intervals of -20°C to -10°C, -10°C to 0°C, and 0°C to 10°C, and the process has good control strength for temperature, which can find the corresponding temperature interval according to the overall temperature feedback of the battery pack and switch the heating operation of the main emitting unit and the auxiliary emitting unit on the dual-frequency microwave module. In addition, in some optional embodiments of the application, to ensure that the maximum temperature rising time of the battery pack is within 3min and further reduce the temperature difference inside and outside the battery pack, the awakening of the main emitting unit and the auxiliary emitting unit can also be that when the main emitting unit works independently, the auxiliary emitting unit can be intermittently awakened, and when the auxiliary emitting unit works independently, the main emitting unit can be intermittently awakened, to implement the intermittent cooperative operation, such as awakening every 3s and the awakening time being 2s, to realize the temperature rising auxiliary operation in the controllable range of the temperature inside and outside the battery pack, to ensure that the temperature rising time of the battery pack is within 3min, and to also reduce the temperature difference inside and outside the battery pack to improve the overall temperature rising quality of the battery pack and shorten the temperature difference to ensure the service life of the battery.

[0044] To sum up, the vehicle rapid charging method in the above embodiment implements rapid heating of the battery pack by three different heating methods based on the overall temperature of the battery pack being in the temperature range of-20℃ to-10℃, -10℃ to 0℃, and 0℃ to 10℃ respectively through stage heating control, and has good control strength for temperature during the process. The corresponding temperature interval can be found according to the overall temperature of the battery pack fed back at present, and the main transmitting unit and the auxiliary transmitting unit on the dual-frequency microwave module are switched and heated according to the corresponding temperature interval, so as to accurately implement targeted heating operation on the battery under different temperature states. The problem that the battery temperature cannot be adjusted adaptively according to the current battery temperature rise, resulting in unstable temperature change during the battery heating process and affecting the service life of the battery is solved.

[0045] Embodiment two

[0046] Please refer to Figure 2 , which is a vehicle rapid charging method in the second embodiment of the application, and the method specifically includes steps S11-S18.

[0047] In step S11, the temperature information of the battery pack is obtained, the vehicle is switched from the power-off state to the power-on state, and it is judged whether the temperature information is lower than 0℃. If yes, step S12 is executed.

[0048] In step S12, the dual-frequency microwave module is woken up, and the temperature state information of the battery pack is obtained in real time. It is judged whether the temperature information meets the temperature interval of-20℃ to-10℃, -10℃ to 0℃, and 0℃ to 10℃. If yes, step S13 is executed.

[0049] In step S13, the heating rate is continuously obtained, and it is judged whether the heating rate meets the preset heating rate of the corresponding temperature interval. If yes, step S14 is executed, and if no, step S15 is executed.

[0050] In step S14, the dual-frequency microwave module is controlled to be adaptively switched and adjusted according to the preset control condition of the corresponding preset temperature interval, so that the temperature of the battery pack stably rises in the preset time.

[0051] In step S15, the abnormal heating rate and the participation information of the current dual-frequency microwave module are called.

[0052] In step S16, it is judged whether the abnormal heating rate is greater than the preset heating rate. If yes, step S17 is executed, and if no, step S18 is executed.

[0053] In step S17, it is determined that the heating rate of the current 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 transmitting unit is shortened and the participation time of the auxiliary transmitting unit is prolonged according to the heating rate difference, so as to balance the heating rate.

[0054] Step S18, determine the current battery pack heating rate is low, and calculate the abnormal heating rate and the heating rate difference of the preset heating rate, through the heating rate difference corresponding to extend the main emission unit participation time and shorten the participation time of auxiliary emission unit, to balance the heating rate.

[0055] Based on the specific implementation of steps S15 to S18, that is, based on the continuous acquisition of heating rate in step S13, and judge whether the heating rate meets the preset heating rate of the corresponding temperature interval, by calling the abnormal heating rate and the participation information of the current double frequency microwave module, wherein the battery pack temperature is located at 0℃ to 10℃ is taken as an example, in this state, through the participation of the main emission unit and the auxiliary emission unit at the same time (as the participation information of the double frequency microwave module), the overall heating rate of the battery pack is 10℃ / min (as the preset heating rate), and less than or exceeding the heating rate range is determined as the abnormal heating rate, and step S15 is used to monitor the temperature of the current battery pack during the heating process to prevent the heating process from being too fast, exceeding the battery temperature bearing range, affecting the battery life, or the heating is too slow and the temperature stagnates, resulting in slow charging of the battery pack. After step S16, it is judged whether the abnormal heating rate is greater than the preset heating rate, the purpose is to determine whether the current battery pack belongs to the high heating rate leading to battery overheating or the low heating rate leading to the reduction of battery charging efficiency, and implement the corresponding processing, such as through step S17, determine the current battery pack heating rate is high, and calculate the heating rate difference between the abnormal heating rate and the preset heating rate: , wherein : heating rate difference; : abnormal heating rate; : preset heating rate, then, through the heating rate difference corresponding to shorten the participation time of the main emission unit and extend the participation time of the auxiliary emission unit, through the formula: , wherein : high frequency coefficient, which is a preset parameter 12℃ / min; : low frequency coefficient, which is a preset parameter 4℃ / min; : new high frequency time (main emission unit); : new low frequency time (auxiliary emission unit); : total period (total time of this stage); : initial high frequency time; : initial low frequency duration, and the participation duration of the current main transmitting unit and the auxiliary transmitting unit in the heating process is calculated respectively, and the corresponding duration ratio is obtained, such as 60% of the main transmitting unit participation duration and 40% of the auxiliary transmitting unit participation duration, and if there is an abnormal battery pack temperature rise in this state, the main transmitting unit participation duration needs to be adjusted downward, and the auxiliary transmitting unit participation duration is adjusted upward according to the main transmitting unit downward adjustment ratio. In some optional embodiments, it can be an equal adjustment of every 5% or every 10%, and after adjustment, the current battery pack temperature change is judged in real time until the preset temperature rise rate is met, or the current state is maintained, or based on the power adjustment of the main transmitting unit and the auxiliary transmitting unit, if the temperature rise rate is high, the output power of the main transmitting unit and the auxiliary transmitting unit is adjusted downward, and step S18 is the same as the above adjustment operation, and the temperature rise rate balance adjustment is realized. In summary, the vehicle fast charging method in the above embodiment is different from embodiment one in that, in order to further improve the stability of temperature rise and minimize the temperature difference inside and outside the battery pack during the battery pack temperature rise process, the battery pack temperature rise rate is analyzed, and the participation duration of the current main transmitting unit and the auxiliary transmitting unit in the heating process is calculated respectively, and the corresponding duration ratio is obtained, and based on the ratio and the abnormal temperature rise rate, the adaptive participation duration adjustment is implemented to realize the purpose of temperature rise rate balance adjustment.

[0056] Embodiment three

[0057] Another aspect of the present application also provides a vehicle fast charging system, please refer to Figure 3 , the system comprises:

[0058] The acquisition judgment module 11 is used for acquiring the temperature information of the current battery pack, switching the vehicle to the power-on state from the power-off state, and judging whether the temperature information meets the preset temperature condition. If it is satisfied, the first execution module is executed;

[0059] The first execution module 12 is used for waking up the dual-frequency microwave module, simultaneously acquiring the temperature state information of the battery pack in real time, and judging whether the temperature state information meets a plurality of preset temperature rise state intervals. If it is satisfied, the second execution module is executed;

[0060] The second execution module 13 is used for sequentially controlling the dual-frequency microwave module to implement adaptive switching adjustment according to the preset control condition corresponding to the preset temperature interval, so that the battery pack temperature rises stably within the preset time.

[0061] Embodiment four

[0062] Another aspect of the present application also provides a readable storage medium, which stores a computer program, and the program is executed by a processor to realize the steps of the method in any one of the above embodiments one to two.

[0063] Embodiment five

[0064] Another aspect of the present application also provides a vehicle fast charging device, comprising a memory, a processor, and a computer program stored in the memory and executable in the processor, wherein the processor implements the steps of the method according to any one of the above-mentioned embodiments 1 to 2 when executing the program.

[0065] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described herein, however, as long as the combinations of the technical features do not contradict, they shall be considered as the scope of the present application.

[0066] Those skilled in the art can understand that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a list of executable instructions for implementing the logic function, which can be embodied in any computer readable medium for use by or in connection with an instruction execution system, apparatus or device, such as a computer-based system, a system including a processor or other system that can fetch the instructions from the instruction execution system, apparatus or device and execute the instructions, or in conjunction with these instruction execution systems, apparatus or devices. For the purpose of the present specification, the "computer readable medium" can be any device that can contain, store, communicate, propagate or transport the program for use by or in connection with the instruction execution system, apparatus or device, or in conjunction with these instruction execution systems, apparatus or devices.

[0067] More specific examples (a non-exhaustive list) of the computer readable medium include the following: an electrical connection having one or more wires (electrical devices), a portable computer diskette (magnetic devices), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium can even be paper or other suitable medium on which the program can be printed, as the program can be electronically obtained, for example, by optical scanning of the paper or other medium, followed by electronic conversion, interpretation or processing, if necessary, in other suitable manner, and then stored in a computer memory.

[0068] It should be understood that the parts of the present application can be realized by hardware, software, firmware or a combination thereof.

[0069] In the above described embodiments, the various steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, and in another embodiment, any of the following technologies, or combinations thereof, can be used: a discrete logic circuit having logic gates for implementing logic functions upon an application of data signals; an application specific integrated circuit having appropriate combinational logic gates; a programmable gate array (PGA), a field programmable gate array (FPGA), or other programmable logic device now known or later developed.

[0070] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] The above described embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A method of quick charging a vehicle, characterized by, The method comprises: obtaining temperature information of a current battery pack, switching a vehicle from a powered-off state to a powered-on state, and determining whether the temperature information meets a preset temperature condition; if yes, waking up a dual-frequency microwave module, simultaneously obtaining temperature state information of the battery pack in real time, and determining whether the temperature state information meets at least one preset temperature interval, wherein the dual-frequency microwave module at least comprises a main emission unit using 2450 MHz microwave emission and an auxiliary emission unit using 915 MHz low-frequency regulation; waking up the dual-frequency microwave module, simultaneously obtaining temperature state information of the battery pack in real time, and determining whether the temperature state information meets the preset temperature interval; if yes, continuously obtaining a temperature rise rate, and determining whether the temperature rise rate meets a preset temperature rise rate corresponding to the temperature interval; if yes, sequentially controlling the dual-frequency microwave module to implement adaptive switching adjustment according to a preset control condition corresponding to the preset temperature interval, so that the temperature of the battery pack stably rises within a preset time; if no, calling an abnormal temperature rise rate and participation information of the current dual-frequency microwave module; determining whether the abnormal temperature rise rate is greater than the preset temperature rise rate; if yes, determining that the temperature rise rate of the current battery pack is high, calculating a temperature rise rate difference between the abnormal temperature rise rate and the preset temperature rise rate, and correspondingly shortening the participation time of the main emission unit and lengthening the participation time of the auxiliary emission unit through the temperature rise rate difference, so as to balance the temperature rise rate.

2. The vehicle quick charging method according to claim 1, characterized by, The temperature state information at least comprises current temperature information of the battery pack and a temperature rise rate of the battery pack required for each degree Celsius in a temperature rise process, and the preset temperature interval at least comprises temperature intervals of the battery pack after the vehicle is powered on, which are respectively between -20℃ to -10℃, -10℃ to 0℃, and 0℃ to 10℃.

3. The vehicle quick charging method according to claim 2, characterized by, The step of determining whether the abnormal temperature rise rate is greater than the preset temperature rise rate further comprises: determining whether the abnormal temperature rise rate is greater than the preset temperature rise rate; if no, determining that the temperature rise rate of the current battery pack is low, calculating a temperature rise rate difference between the abnormal temperature rise rate and the preset temperature rise rate, and correspondingly lengthening the participation time of the main emission unit and shortening the participation time of the auxiliary emission unit through the temperature rise rate difference, so as to balance the temperature rise rate.

4. The vehicle quick charging method according to claim 3, characterized by, The correlation formula between the abnormal temperature rise rate, the preset temperature rise rate, the temperature rise rate difference, and the participation information of the dual-frequency microwave module is respectively: Temperature ramp rate difference: ; New engagement duration: ; wherein, : temperature rise rate difference value; : abnormal temperature rise rate; : preset temperature rise 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.

5. A vehicle quick charging system for implementing the vehicle quick charging method according to any one of claims 1 to 4, characterized by, The system comprises: an acquisition and determination module, configured to obtain temperature information of a current battery pack, switch a vehicle from a powered-off state to a powered-on state, and determine whether the temperature information meets a preset temperature condition, and if yes, execute a first execution module; the first execution module, configured to wake up a dual-frequency microwave module, simultaneously obtain temperature state information of the battery pack in real time, and determine whether the temperature state information meets at least one preset temperature interval, and if yes, execute a second execution module; the second execution module, configured to continuously obtain a temperature rise rate, and determine whether the temperature rise rate meets a preset temperature rise rate corresponding to the temperature interval; A second execution module is configured to control the double-frequency microwave module to perform adaptive switching adjustment according to preset control conditions corresponding to the preset temperature intervals, so that the battery pack temperature is stably increased within a preset time.

6. A computer-readable storage medium having stored thereon a computer program, characterized in that, The program is executed by the processor to implement the vehicle fast charging method of any one of claims 1-4.

7. A vehicle fast charging apparatus, characterized by, A computer program product comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the vehicle fast charging method of any one of claims 1-4 when executing the program. A computer program product comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the vehicle fast charging method of any one of claims 1-4 when executing the program.

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