CN111342150B - Centralized charging maintenance system and charging maintenance method for vehicle storage battery - Google Patents
Centralized charging maintenance system and charging maintenance method for vehicle storage battery Download PDFInfo
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Abstract
The invention discloses a centralized charging maintenance system and a charging maintenance method for vehicle storage batteries, the system comprises a charging maintenance control system and a mobile management terminal, the charging maintenance control system comprises an upper computer maintenance system and a plurality of charging maintenance racks, each charging maintenance rack is provided with a plurality of charging maintenance positions, each charging maintenance position is correspondingly provided with a charging maintenance unit, each charging maintenance rack is also provided with a charging management unit, by the system, a plurality of storage batteries can be placed on the charging maintenance positions of the charging maintenance racks for charging maintenance at the same time, the batch charging maintenance, battery access identification, battery failure state judgment and battery fault activation of the storage batteries are realized, and the whole process does not need to manually record data, but is realized by the information interaction between the mobile management terminal and the charging maintenance control system and the maintenance control of the charging maintenance control system, the efficiency and the quality of battery charging maintenance have been promoted.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a centralized charging maintenance system and a centralized charging maintenance method for a vehicle storage battery.
Background
The storage batteries in the parking lot are numerous, and because the specifications of vehicles are different, the rated capacities and the rated voltage grades of the storage batteries matched with the storage batteries are different, in order to ensure the reliable work and the service lives of the storage batteries of the vehicles, the storage batteries of the vehicles need to be charged and maintained regularly, but the conventional charging and maintaining method usually adopts a switching power supply as charging and maintaining equipment and is usually carried out in a manual recording mode, a large amount of time and manpower are consumed for carrying out one-time charging and maintaining, and meanwhile, the manual recording of data is difficult to track and take account of information such as state change of each battery, so that the conventional storage battery charging and maintaining method is time-consuming and labor-consuming, effective charging and maintaining data cannot be obtained, and the.
Disclosure of Invention
In order to solve the technical problems, the invention provides a centralized charging maintenance system and a centralized charging maintenance method for a vehicle storage battery.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
a centralized charging maintenance system for vehicle storage batteries comprises a charging maintenance control system and a mobile management terminal which can communicate with the charging maintenance control system, wherein the charging maintenance control system comprises an upper computer maintenance system and a plurality of charging maintenance racks, each charging maintenance rack is provided with a plurality of charging maintenance positions for placing storage batteries, each charging maintenance position is correspondingly provided with a charging maintenance unit, each charging maintenance rack is also provided with a charging management unit, the charging management unit is used for controlling the corresponding charging maintenance unit to charge and maintain the storage batteries to be maintained according to maintenance instructions of the upper computer maintenance system, the mobile management terminal is used for acquiring first identification information of the storage batteries to be maintained on the charging maintenance positions and second identification information of the charging maintenance positions and sending the first identification information and the second identification information to the charging maintenance control system for matching, and the charging maintenance control system is used for charging maintenance on the storage battery to be maintained by adopting a corresponding charging maintenance control strategy according to the matching result.
Further, the charging management unit comprises a first controller, a first ethernet communication module, a first CAN bus module, a first auxiliary power module, a first antenna module, a first human-computer interaction module for realizing human-computer interaction, and a first data storage module for storing data, wherein the ethernet communication module is used for communicating with the upper computer maintenance system, the first CAN bus module is used for realizing communication with a corresponding charging maintenance unit, the first auxiliary power module is used for providing power for the charging management unit, and the first antenna module is used for communicating with the mobile management terminal.
Further, the charging maintenance unit comprises a second controller, a second CAN bus module, a second auxiliary power module, a second antenna module, a battery parameter measurement module and a second human-computer interaction module for realizing human-computer interaction, the second CAN bus module is used for realizing communication with the corresponding charging management unit, the second auxiliary power module is used for supplying power to the charging maintenance unit, the second antenna module is used for communicating with the mobile management terminal, and the battery parameter measurement module is used for measuring battery parameters of the storage battery to be maintained.
Further, the battery parameter measuring module comprises at least one of an alternating current internal resistance measuring module, a voltage and current measuring module and a battery temperature measuring module, the internal resistance measuring module is used for measuring the internal resistance of the battery to be maintained, the voltage and current measuring module is used for measuring the current and the voltage of the battery to be maintained, and the battery temperature measuring module is used for measuring the temperature of the battery to be maintained.
Further, the mobile management terminal comprises a third controller, a third antenna module, a third ethernet communication module, a third auxiliary power module, an information acquisition module, a third human-computer interaction module for realizing human-computer interaction, a display module for displaying information, and a third data storage module for storing data, wherein the third antenna module is used for communicating with at least one of the charging maintenance unit and the charging management unit, the third ethernet communication module is used for communicating with the upper computer maintenance system, and the information acquisition module is used for acquiring first identification information of the storage battery to be maintained.
Further, the information acquisition module is one of a two-dimensional code scanning module, a bar code scanning module and a radio frequency identification module.
Further, the invention also provides a charging maintenance method based on any one of the vehicle storage battery centralized charging maintenance systems, which comprises the following steps:
s1: the method comprises the steps that a mobile management terminal obtains first identification information of a storage battery to be maintained on a charging maintenance position and second identification information of the charging maintenance position;
s2: the mobile management terminal sends the first identification information and the second identification information to a charging maintenance control system;
s3: the charging maintenance control system judges whether the first identification information is matched with the second identification information according to a pre-stored database, if so, the step is switched to S4, and if not, the step is switched to S7;
s4: the charging maintenance unit detects the voltage, the current and the internal resistance of the storage battery to be maintained in real time;
s5: the charging maintenance unit judges whether the storage battery to be maintained is a normal battery or not according to the detection result, if so, the step is switched to S9, and if not, the step is switched to S6;
s6: the charging maintenance unit activates the storage battery to be maintained and then turns to S9;
s7: entering a calibration flow, and discharging the storage battery to be maintained until the storage battery is stopped;
s8: charging the storage battery to be maintained until the storage battery is stopped, and acquiring and storing calibration data;
s9: and finishing the maintenance.
Further, step S5 includes:
s51: the charging maintenance unit judges whether the storage battery to be maintained is accessed for the first time, if so, the operation goes to S52, and if not, the operation goes to S56;
s52: entering a capacity calibration flow, and determining the current calibration capacity of the storage battery to be maintained according to the detection result of the storage battery to be maintained;
s53: judging whether the calibrated capacity is greater than or equal to a preset first capacity threshold, if so, turning to S54, otherwise, turning to S55;
s54: judging the storage battery to be maintained as a normal battery;
s55; judging the storage battery to be maintained as a failure battery;
s56: judging whether the internal resistance of the storage battery to be maintained, which is detected by the charging maintenance unit, is greater than or equal to a preset internal resistance threshold value, if so, turning to S57, otherwise, turning to S58;
s57: judging the storage battery to be maintained as a failure battery;
s58: and judging that the storage battery to be maintained is a normal battery.
Further, step S6 includes:
s61: prompting a user to supplement pure water;
s62: entering a failure degree calibration process;
s63: normally charging the storage battery to be maintained and finishing normal charging;
s64: normally discharging the storage battery to be maintained, and finishing normal discharging to obtain the currently calibrated battery capacity of the storage battery to be maintained;
s65: judging whether the currently calibrated battery capacity is smaller than a preset second capacity threshold, if so, turning to S66, otherwise, turning to S67;
s66: carrying out high-voltage current-limiting pulse charging on the storage battery to be maintained;
s67: judging whether the currently calibrated battery capacity is smaller than a preset third capacity threshold, if so, turning to S68, otherwise, turning to S69;
s68: constant low-current charging and discharging are carried out on the storage battery to be maintained;
s69: judging whether the current calibrated battery capacity is smaller than a preset first capacity threshold value, if so, turning to S70, otherwise, turning to S71; the preset first capacity threshold value > the preset third capacity threshold value > the preset second capacity threshold value;
s70: normal current circulation charging and discharging;
s71: the activation processing flow is ended.
Further, the preset first capacity threshold is 80% of rated battery capacity, the preset third capacity threshold is 50% of rated battery capacity, and the preset second capacity threshold is 5% of rated battery capacity.
By the centralized charging maintenance system and the centralized charging maintenance method for the vehicle storage batteries, a plurality of storage batteries to be maintained can be placed on the charging maintenance rack for charging maintenance at the same time, and batch charging maintenance of the storage batteries is realized.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a block diagram of a centralized charging maintenance system for a vehicle battery according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a charging management unit;
FIG. 3 is a schematic diagram of a charging maintenance unit;
fig. 4 is a schematic structural diagram of a mobile management terminal;
FIG. 5 is a schematic flow chart of a charge maintenance method of the centralized charge maintenance system for vehicle batteries;
FIG. 6 is a schematic view of a battery state determination process;
fig. 7 is a schematic flow chart of the process of activating the battery to be maintained.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
This embodiment provides a centralized charging maintenance system for vehicle storage batteries, please refer to fig. 1, which includes a charging maintenance control system and a mobile management terminal capable of communicating with the charging maintenance control system, where the charging maintenance control system includes an upper computer maintenance system and a plurality of charging maintenance racks, each charging maintenance rack is provided with a plurality of charging maintenance locations for placing storage batteries, each charging maintenance location is correspondingly provided with a charging maintenance unit, and each charging maintenance rack is further provided with a charging management unit, where the charging management unit is used to control the corresponding charging maintenance unit to perform charging maintenance on the storage battery to be maintained according to a maintenance instruction of the upper computer maintenance system, and the mobile management terminal is used to obtain first identification information of the storage battery to be maintained on the charging maintenance location and second identification information of the charging maintenance location, and send the first identification information and the corresponding second identification information to the charging maintenance control system to perform matching And the charging maintenance control system is used for charging maintenance on the storage battery to be maintained by adopting a corresponding charging maintenance control strategy according to the matching result.
Referring to fig. 2, the charging management unit in this embodiment includes a first controller, a first ethernet communication module, a first CAN bus module, a first auxiliary power module, a first antenna module, a first human-computer interaction module for implementing human-computer interaction, and a first data storage module for storing data, where the ethernet communication module is used to communicate with an upper computer maintenance system, the first CAN bus module is used to implement communication with a corresponding charging maintenance unit, the first auxiliary power module is used to provide power for the charging management unit, the first antenna module is used to communicate with a mobile management terminal, and the first controller is a control center of the charging management unit and is connected to and controls other modules of the charging management unit.
Referring to fig. 3, the charging maintenance unit in this embodiment includes a second controller, a second CAN bus module, a second auxiliary power module, a second antenna module, a battery parameter measurement module, and a second human-computer interaction module for implementing human-computer interaction, where the second CAN bus module is used to implement communication with a corresponding charging management unit, the second auxiliary power module is used to provide power for the charging maintenance unit, the second antenna module is used to communicate with the mobile management terminal, and the battery parameter measurement module is used to measure battery parameters of the battery to be maintained. Specifically, the battery parameter measuring module in this embodiment includes at least one of an alternating current internal resistance measuring module, a voltage and current measuring module, and a battery temperature measuring module, where the internal resistance measuring module is configured to measure an internal resistance of the battery to be maintained, the voltage and current measuring module is configured to measure a current and a voltage of the battery to be maintained, and the battery temperature measuring module is configured to measure a temperature of the battery to be maintained.
Referring to fig. 4, the mobile management terminal in this embodiment includes a third controller, a third antenna module, a third ethernet communication module, a third auxiliary power module, an information acquisition module, a third human-computer interaction module for implementing human-computer interaction, a display module for displaying information, and a third data storage module for storing data, where the third antenna module is configured to communicate with at least one of the charging maintenance unit and the charging management unit, the third ethernet communication module is configured to communicate with an upper computer maintenance system, the third auxiliary power module is configured to provide power for the mobile management terminal, and the information acquisition module is configured to acquire first identification information of a storage battery to be maintained. It should be noted that, the mobile management terminal in this embodiment may further obtain the second identification information of the charging maintenance bit.
The information acquisition module in this embodiment may be any one of a two-dimensional code scanning module, a barcode scanning module, and a radio frequency identification module.
In an example, the second identification information may be obtained by the information obtaining module, where the charging maintenance bit and the battery to be maintained both need to be pasted with corresponding identification codes, and the mobile management terminal scans the identification code on the battery to be maintained and the identification code on the charging maintenance bit to obtain the first identification information and the second identification information. In another example, the second identification information may be obtained by a third human-computer interaction module, specifically, the mobile management terminal may obtain the first identification information by scanning an identification code on a battery to be maintained, and the third human-computer interaction module obtains the second identification information by receiving information input by a user, that is, in this example, after an operator places a certain battery to be maintained on the charging maintenance location, the identification code on the battery may be scanned by the information obtaining module of the mobile management terminal, and the identification information of the charging maintenance location is input to the mobile management terminal by the third human-computer interaction module of the mobile management terminal, so that the mobile management terminal obtains the first identification information and the second identification information.
In this embodiment, the identification code attached to the storage battery to be maintained may include rated voltage information and rated current information of the storage battery, and the mobile management terminal may obtain these information by scanning the identification code, at this time, the second identification information of the charging maintenance bit may be information of voltage and current that can be provided by the corresponding charging maintenance unit on the charging maintenance bit, if the two are matched, it indicates that the storage battery to be maintained is correctly placed, and if the two are not matched, it indicates that the position is incorrectly placed, and only a calibration flow needs to be entered to obtain calibration data of the storage battery.
Because different storage batteries may have different rated working voltages, currents and rated capacities, the mobile management terminal in the embodiment has the main function of identifying the identification code of the storage battery to be maintained so as to ensure that the storage battery to be maintained is placed on the correct charging maintenance position, therefore, after obtaining the first identification information and the second identification information, the mobile management terminal sends the two identification information to the charging maintenance control system, the charging maintenance control system judges whether the first identification information and the second identification information are matched according to the pre-stored database, if not, the storage battery to be maintained is discharged till the end, then the storage battery to be maintained is charged until the end, the calibration data of the storage battery to be maintained is obtained and stored, in some embodiments, the mobile management terminal can also display the unmatched information through the display module to prompt the operator; and if the first identification information is matched with the second identification information, the charging maintenance unit detects the voltage, the current and the internal resistance of the storage battery to be maintained in real time, judges whether the storage battery to be maintained is a normal battery or not according to the detection result, ends the charging maintenance process if the storage battery to be maintained is the normal battery, and activates the storage battery to be maintained if the storage battery is not the normal battery.
It should be noted that, in the first example, the mobile management terminal may directly send the first identification information and the second identification information to the upper computer maintenance system, and then the upper computer maintenance system determines whether the first identification information and the second identification information are matched, and executes the subsequent control flow. In a second example, the mobile management terminal may send the first identification information and the second identification information to the charging maintenance unit, and the charging maintenance unit determines whether the first identification information and the second identification information are matched, and at this time, the charging maintenance unit may further be provided with a status indication module to prompt an operator of a matching result, for example, a green light may be turned on when the first identification information and the second identification information are matched, and a red light may be turned on when the first identification information and the second identification information are not matched. In a third example, the mobile management terminal may transmit the first identification information and the second identification information to the charging management unit, and the charging management unit may determine whether the first identification information and the second identification information match.
Referring to fig. 5, the present embodiment further provides a charging maintenance method based on any one of the vehicle battery centralized charging maintenance systems, including the following steps:
s1: the method comprises the steps that a mobile management terminal obtains first identification information of a storage battery to be maintained on a charging maintenance position and second identification information of the charging maintenance position;
s2: the mobile management terminal sends the first identification information and the second identification information to a charging maintenance control system;
s3: the charging maintenance control system judges whether the first identification information is matched with the second identification information according to a pre-stored database, if so, the step is switched to S4, and if not, the step is switched to S7;
s4: the charging maintenance unit detects the voltage, the current and the internal resistance of the storage battery to be maintained in real time;
s5: the charging maintenance unit judges whether the storage battery to be maintained is a normal battery or not according to the detection result, if so, the step is switched to S9, and if not, the step is switched to S6;
s6: the charging maintenance unit activates the storage battery to be maintained and then turns to S9;
s7: entering a calibration flow, and discharging the storage battery to be maintained until the storage battery is stopped;
s8: charging the storage battery to be maintained until the storage battery is stopped, and acquiring and storing calibration data;
s9: and finishing the maintenance.
Fig. 6 shows a flow of determining the state of the storage battery in step S5, which includes the following steps:
s51: the charging maintenance unit judges whether the storage battery to be maintained is accessed for the first time, if so, the operation goes to S52, and if not, the operation goes to S56;
s52: entering a capacity calibration flow, and determining the current calibration capacity of the storage battery to be maintained according to the detection result of the storage battery to be maintained;
s53: judging whether the calibrated capacity is greater than or equal to a preset first capacity threshold, if so, turning to S54, otherwise, turning to S55;
s54: judging the storage battery to be maintained as a normal battery;
s55; judging the storage battery to be maintained as a failure battery;
s56: judging whether the internal resistance of the storage battery to be maintained, which is detected by the charging maintenance unit, is greater than or equal to a preset internal resistance threshold value, if so, turning to S57, otherwise, turning to S58;
s57: judging the storage battery to be maintained as a failure battery;
s58: and judging that the storage battery to be maintained is a normal battery.
The process of activating the battery to be maintained in step S6 can be seen from fig. 7, and includes the following steps:
s61: prompting a user to supplement pure water;
s62: entering a failure degree calibration process;
s63: normally charging the storage battery to be maintained and finishing normal charging;
s64: normally discharging the storage battery to be maintained, and finishing normal discharging to obtain the currently calibrated battery capacity of the storage battery to be maintained;
65: judging whether the currently calibrated battery capacity is smaller than a preset second capacity threshold, if so, turning to S66, otherwise, turning to S67;
it should be noted that, in another embodiment, the step S65 may be replaced by the following steps:
and (5) judging whether the current in the normal charging and discharging processes in the steps S63 and S64 is less than 0.05C, if so, turning to S66, and otherwise, turning to S67.
S66: carrying out high-voltage current-limiting pulse charging on the storage battery to be maintained;
s67: judging whether the currently calibrated battery capacity is smaller than a preset third capacity threshold, if so, turning to S68, otherwise, turning to S69;
s68: constant low-current charging and discharging are carried out on the storage battery to be maintained;
in step S68, the maintenance battery may be charged and discharged with a small current of 0.05C.
S69: judging whether the current calibrated battery capacity is smaller than a preset first capacity threshold value, if so, turning to S70, otherwise, turning to S71; the preset first capacity threshold value > the preset third capacity threshold value > the preset second capacity threshold value;
s70: normal current circulation charging and discharging;
s71: the activation processing flow is ended.
Optionally, in this embodiment, the first preset capacity threshold is 80% of the rated battery capacity, the third preset capacity threshold is 50% of the rated battery capacity, and the second preset capacity threshold is 5% of the rated battery capacity.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a vehicle storage battery concentrates maintenance system that charges which characterized in that, including charge maintain control system and can with charge and maintain control system and carry out the mobile management terminal that communicates, charge and maintain control system and include host computer maintenance system and a plurality of maintenance of charging rack, be provided with a plurality of charges that are used for placing the battery on each maintenance of charging rack and maintain the position, each charges and is provided with the maintenance unit that charges that corresponds on maintaining the position, still be provided with the management unit that charges on each maintenance of charging rack, the management unit that charges is used for maintaining the corresponding maintenance of charging unit according to the maintenance instruction control of host computer maintenance system and treats the maintenance battery and maintain that charges, mobile management terminal is used for acquireing charge and maintains the first identification information of treating the maintenance battery on the position and should charge the second identification information of maintaining the position, and will first identification information with second identification information send to charge and maintain control system and advance The charging maintenance control system is used for charging maintenance on the storage battery to be maintained by adopting a corresponding charging maintenance control strategy according to a matching result;
the charging management unit comprises a first antenna module, and the first antenna module is used for communicating with the mobile management terminal; the charging maintenance unit comprises a second antenna module, and the second antenna module is used for communicating with the mobile management terminal; the mobile management terminal comprises a third antenna module, wherein the third antenna module is used for communicating with at least one of the charging maintenance unit and the charging management unit;
the mobile management terminal sends the first identification information and the second identification information to the upper computer maintenance system, and then the upper computer maintenance system judges whether the first identification information and the second identification information are matched; or the mobile management terminal sends the first identification information and the second identification information to the charging maintenance unit, and the charging maintenance unit judges whether the first identification information and the second identification information are matched; or the mobile management terminal sends the first identification information and the second identification information to the charging management unit, and the charging management unit judges whether the first identification information and the second identification information are matched;
and if the first identification information is matched with the second identification information, the charging maintenance unit detects the voltage, the current and the internal resistance of the storage battery to be maintained in real time, judges whether the storage battery to be maintained is a normal battery or not according to the detection result, ends the charging maintenance process if the storage battery to be maintained is the normal battery, and activates the storage battery to be maintained if the storage battery is not the normal battery.
2. The centralized charging and maintaining system for vehicle storage batteries according to claim 1, wherein the charging management unit further comprises a first controller, a first ethernet communication module, a first CAN bus module, a first auxiliary power module, a first human-machine interaction module for implementing human-machine interaction, and a first data storage module for storing data, the ethernet communication module is used for communicating with the upper-computer maintenance system, the first CAN bus module is used for implementing communication with a corresponding charging and maintaining unit, and the first auxiliary power module is used for providing power for the charging management unit.
3. The centralized charging maintenance system for vehicle storage batteries according to claim 1, wherein the charging maintenance unit further comprises a second controller, a second CAN bus module, a second auxiliary power module, a battery parameter measurement module, and a second human-computer interaction module for implementing human-computer interaction, the second CAN bus module is used for implementing communication with a corresponding charging management unit, the second auxiliary power module is used for providing power for the charging maintenance unit, and the battery parameter measurement module is used for measuring battery parameters of the storage battery to be maintained.
4. The vehicle storage battery centralized charging maintenance system according to claim 3, wherein the battery parameter measurement module comprises at least one of an alternating-current internal resistance measurement module for measuring an internal resistance of the storage battery to be maintained, a voltage-current measurement module for measuring a current and a voltage of the storage battery to be maintained, and a battery temperature measurement module for measuring a temperature of the storage battery to be maintained.
5. The centralized charging and maintaining system for the vehicle storage battery according to claim 1, wherein the mobile management terminal further comprises a third controller, a third ethernet communication module, a third auxiliary power module, an information obtaining module, a third human-machine interaction module for implementing human-machine interaction, a display module for displaying information, and a third data storage module for storing data, the third ethernet communication module is used for communicating with the upper computer maintenance system, and the information obtaining module is used for obtaining the first identification information of the storage battery to be maintained.
6. The vehicle battery centralized charging maintenance system according to claim 5, wherein the information acquisition module is one of a two-dimensional code scanning module, a bar code scanning module, and a radio frequency identification module.
7. The charge maintenance method of the vehicle storage battery concentrated charge maintenance system according to any one of claims 1 to 6, characterized by comprising the steps of:
s1: the method comprises the steps that a mobile management terminal obtains first identification information of a storage battery to be maintained on a charging maintenance position and second identification information of the charging maintenance position;
s2: the mobile management terminal sends the first identification information and the second identification information to a charging maintenance control system;
s3: the charging maintenance control system judges whether the first identification information is matched with the second identification information according to a pre-stored database, if so, the step is switched to S4, and if not, the step is switched to S7;
s4: the charging maintenance unit detects the voltage, the current and the internal resistance of the storage battery to be maintained in real time;
s5: the charging maintenance unit judges whether the storage battery to be maintained is a normal battery or not according to the detection result, if so, the step is switched to S9, and if not, the step is switched to S6;
s6: the charging maintenance unit activates the storage battery to be maintained and then turns to S9;
s7: entering a calibration flow, and discharging the storage battery to be maintained until the storage battery is stopped;
s8: charging the storage battery to be maintained until the storage battery is stopped, and acquiring and storing calibration data;
s9: and finishing the maintenance.
8. The charge maintenance method according to claim 7, wherein step S5 includes:
s51: the charging maintenance unit judges whether the storage battery to be maintained is accessed for the first time, if so, the operation goes to S52, and if not, the operation goes to S56;
s52: entering a capacity calibration flow, and determining the current calibration capacity of the storage battery to be maintained according to the detection result of the storage battery to be maintained;
s53: judging whether the calibrated capacity is greater than or equal to a preset first capacity threshold, if so, turning to S54, otherwise, turning to S55;
s54: judging the storage battery to be maintained as a normal battery;
s55; judging the storage battery to be maintained as a failure battery;
s56: judging whether the internal resistance of the storage battery to be maintained, which is detected by the charging maintenance unit, is greater than or equal to a preset internal resistance threshold value, if so, turning to S57, otherwise, turning to S58;
s57: judging the storage battery to be maintained as a failure battery;
s58: and judging that the storage battery to be maintained is a normal battery.
9. The charge maintenance method according to claim 8, wherein step S6 includes:
s61: prompting a user to supplement pure water;
s62: entering a failure degree calibration process;
s63: normally charging the storage battery to be maintained and finishing normal charging;
s64: normally discharging the storage battery to be maintained, and finishing normal discharging to obtain the currently calibrated battery capacity of the storage battery to be maintained;
s65: judging whether the currently calibrated battery capacity is smaller than a preset second capacity threshold, if so, turning to S66, otherwise, turning to S67;
s66: carrying out high-voltage current-limiting pulse charging on the storage battery to be maintained;
s67: judging whether the currently calibrated battery capacity is smaller than a preset third capacity threshold, if so, turning to S68, otherwise, turning to S69;
s68: constant low-current charging and discharging are carried out on the storage battery to be maintained;
s69: judging whether the current calibrated battery capacity is smaller than a preset first capacity threshold value, if so, turning to S70, otherwise, turning to S71; the preset first capacity threshold value > the preset third capacity threshold value > the preset second capacity threshold value;
s70: normal current circulation charging and discharging;
s71: the activation processing flow is ended.
10. The charge maintenance method of claim 9, wherein the preset first capacity threshold is 80% of rated battery capacity, the preset third capacity threshold is 50% of rated battery capacity, and the preset second capacity threshold is 5% of rated battery capacity.
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