Stepless control method and system for flexible power pool of automobile charging pile and medium
By performing insulation monitoring and dynamically adjusting the switching of the charging module in the charging pile system, the problem of resource waste during low-power charging is solved, and more efficient charging resource utilization and reduced operating costs are achieved.
Patent Information
- Application Number
- CN202411892589.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-02-18
AI Technical Summary
When charging at low power, the existing charging pile system switches multiple charging modules, resulting in waste of charging systems and distribution resources.
After the charging pile is inserted into the gun, insulation monitoring is used to ensure safety, and then dynamically adjust the charging module's turn-off, select a non-fixed charging module that meets the needs, and release the balance module during the charging process for other vehicles to charge.
It realizes more flexible utilization of charging resources, reduces resource waste, improves charging efficiency and utilization rate, and reduces operating costs.
Smart Images
Figure CN119459416A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of automobile charging piles, and in particular to a method, system and medium for stepless control of a flexible power pool of an automobile charging pile. Background Art
[0002] As the electric vehicle industry is replacing 1C / 2C batteries with ultra-fast charging batteries above 4C, new energy vehicles that can travel 400 kilometers in 10 minutes of charging are rapidly becoming popular, and the rapid growth of new energy vehicles has increased the pressure on the demand for power capacity. In the current context of limited resources, supercharging equipment is generally equipped with one machine with multiple charging (one power pool with multiple charging terminals) and power distribution functions. The power distribution process mainly includes obtaining the needs of the vehicle BMS (battery management system) -> calculating the needs and priorities of all charging ports -> calculating the switching plan based on the power pool capacity -> controlling the contactor matrix to switch the power unit -> closing the charging terminal DC contactor to start charging.
[0003] The traditional charging pile's control method for the charging module is to obtain the vehicle's BMS (battery management system) requirements: obtain the vehicle's voltage and current requirements by interacting with the vehicle's BMS and the charger. Calculate the requirements and priorities of all charging ports: Sort the charging terminal requirements based on charging measurements combined with the vehicle's charging sequence or priority. A relay matrix is composed of contactors or magnetic latching relays to switch on and off the power units formed by multiple charging modules, but each power unit corresponds to several charging modules, resulting in the switching of several charging modules during low-power charging, which leads to a waste of charging system resources and a waste of distribution resources. Summary of the invention
[0004] In view of the above-mentioned deficiencies in the prior art, the present application provides a method, system and medium for stepless control of a flexible power pool of a car charging pile, so as to solve the problem that the existing solution switches on and off the power unit formed by multiple charging modules, but each power unit corresponds to a number of charging modules, resulting in a waste of charging system resources when switching on and off a number of charging modules during low-power charging, and there is also a problem of waste of power distribution resources.
[0005] In a first aspect, the present application provides a method for stepless control of a flexible power pool of a vehicle charging pile, the method comprising: After detecting that the charging pile is plugged in, insulation monitoring is performed through the fixed charging module or non-fixed charging module of the current gun muzzle; after the insulation monitoring is successful, determine whether the module power of the fixed charging module of this gun muzzle meets the BMS required power of the current car; when it is determined that the module power of the fixed charging module of this gun muzzle does not meet the BMS required power of the current car, select an uncalled non-fixed charging module from the infinite non-fixed charging module pool; select a non-fixed charging module that meets the preset module switching rules from the uncalled non-fixed charging modules, call the contactor corresponding to the non-fixed charging module, and attract the contactor to start charging; during the charging process, based on the preset update cycle, determine whether there are remaining non-fixed modules in the corresponding non-fixed charging module; release the remaining non-fixed modules with charging reservations, and continue charging with the remaining non-fixed charging modules.
[0006] The power pool stepless control method provided in the embodiment of the present application, after detecting that the charging pile is plugged in, performs insulation monitoring through the fixed charging module or non-fixed charging module at the current gun muzzle to ensure safety. If the power of the fixed charging module does not meet the demand, select an uncalled non-fixed charging module from the stepless non-fixed charging module pool. According to the preset module switching rules, select a non-fixed charging module that meets the conditions, and call the corresponding pull-in contactor. Pull the auxiliary contact of the contactor to start charging. During the charging process, based on the preset update cycle, it is determined whether there is a surplus in the non-fixed charging module being used (that is, the power exceeds the current demand). The surplus non-fixed modules with charging reservations are released so that the remaining non-fixed charging modules can be used to charge other vehicles. In summary, the present application can make more flexible use of charging resources and reduce resource waste. By dynamically adjusting the switching of the charging module, the charging needs of different vehicles can be more effectively met. The efficiency and utilization rate of the charging pile are improved, and the operating costs are reduced. Since the control scheme of the present application accurately controls each charging module, the existing solution solves the problem of switching on and off the power unit formed by multiple charging modules. However, each power unit corresponds to several charging modules, which leads to a waste of charging system resources when switching on and off several charging modules during low-power charging, and there is also a problem of waste of power distribution resources.
[0007] In one implementation of the present application, insulation monitoring is performed through a fixed charging module or a non-fixed charging module of the current muzzle, specifically including: Check whether there is a fixed charging module at the current muzzle. When a fixed charging module is called, withdraw the called fixed charging module; perform insulation detection on the fixed charging module; when the insulation detection of the fixed charging module is unsuccessful or the fixed charging module does not exist, call the non-fixed charging module corresponding to the current muzzle; perform insulation detection on the non-fixed charging modules in turn until the insulation detection of a non-fixed charging module is successful.
[0008] In one implementation of the present application, after performing insulation detection on the fixed charging module, the method further includes: The reason for the failure of the insulation test of the fixed charging module is obtained. When the reason is an insulation fault, charging is stopped and the insulation fault of the fixed charging module is reported. After performing insulation tests on the non-fixed charging modules in turn, the method also includes: recording the non-fixed charging modules for which the insulation test failed, and not charging the non-fixed charging modules for which the insulation test failed.
[0009] In one implementation of the present application, after determining whether the module power of the fixed charging module of the gun muzzle meets the BMS required power of the current vehicle, the method further includes: When it is determined that the module power of the fixed charging module of this gun muzzle meets the BMS required power of the current car, the current car is charged through the fixed charging module of this gun muzzle.
[0010] In one implementation of the present application, selecting an uncalled non-fixed charging module from the infinite non-fixed charging module pool specifically includes: Determine whether the total module power of the non-fixed charging modules selected from the infinite non-fixed charging module pool that have not been called meets the BMS required power; when the BMS required power is not met, the non-fixed charging modules that have been called are deprived of the non-fixed charging modules that have not been called in sequence from low to high according to the preset priority of the non-fixed charging modules, until the total module power of the non-fixed charging modules that have not been called meets the BMS required power.
[0011] In one implementation of the present application, before the contactor is closed to start charging, the method further includes: Check whether the current pick-up contactor meets the preset pick-up contactor qualification requirements; when it meets the preset pick-up contactor qualification requirements, the pick-up contactor starts charging.
[0012] In a second aspect, the present application provides a stepless control system for a flexible power pool of a vehicle charging pile, the system comprising: The insulation module is used to perform insulation monitoring through the fixed charging module or non-fixed charging module of the current gun after detecting that the charging pile is plugged in; the determination module is used to determine whether the module power of the fixed charging module of the current gun meets the BMS required power of the current vehicle after the insulation monitoring is successful; the selection module is used to select an uncalled non-fixed charging module from the infinite non-fixed charging module pool when it is determined that the module power of the fixed charging module of the current gun does not meet the BMS required power of the current vehicle; the start module is used to select a non-fixed charging module that meets the preset module switching rules from the uncalled non-fixed charging module, call the contactor corresponding to the non-fixed charging module, and attract the contactor to start charging; the release module is used to determine whether there are any remaining non-fixed modules in the corresponding non-fixed charging module based on the preset update cycle during the charging process; the remaining non-fixed modules with charging reservations are released, and the remaining non-fixed charging modules are used to continue charging.
[0013] In one implementation of the present application, the insulation module includes an insulation unit, which is used to detect whether there is a fixed charging module at the current muzzle. When a fixed charging module is called, the called fixed charging module is withdrawn; an insulation test is performed on the fixed charging module; when the insulation test of the fixed charging module is unsuccessful or the fixed charging module does not exist, the non-fixed charging module corresponding to the current muzzle is called; and insulation tests are performed on the non-fixed charging modules in turn until the insulation test of a non-fixed charging module is successful.
[0014] In one implementation of the present application, the insulation module includes a processing unit, which is used to obtain the reason for the failure of the insulation detection of the fixed charging module. When the reason is an insulation failure, charging is stopped and the insulation failure of the fixed charging module is reported; it is used to record the failure of the insulation detection of the non-fixed charging module and not charge the non-fixed charging module if the insulation detection fails.
[0015] In a third aspect, the present application provides a non-volatile computer storage medium having computer instructions stored thereon, which, when executed, implement a method for stepless control of a flexible power pool of a vehicle charging pile as described above.
[0016] Those skilled in the art can understand that the present application has at least the following beneficial effects: The present application provides a stepless control method, system and medium for a flexible power pool of a car charging pile. After detecting that the charging pile is plugged in, insulation monitoring is performed through the fixed charging module or non-fixed charging module at the current muzzle to ensure safety. If the power of the fixed charging module does not meet the demand, a non-fixed charging module that has not been called is selected from the stepless non-fixed charging module pool. According to the preset module switching rules, a non-fixed charging module that meets the conditions is selected, and the corresponding pull-in contactor is called. The auxiliary contact of the pull-in contactor is pulled in to start charging. During the charging process, based on the preset update cycle, it is determined whether there is a surplus in the non-fixed charging module being used (that is, the power exceeds the current demand). The surplus non-fixed modules with charging reservations are released so that the remaining non-fixed charging modules can be used to charge other vehicles. In summary, the present application can make more flexible use of charging resources and reduce resource waste. By dynamically adjusting the switching of the charging module, the charging needs of different vehicles can be more effectively met. The efficiency and utilization rate of the charging pile are improved, and the operating costs are reduced. Since the control scheme of the present application accurately controls each charging module, the existing solution solves the problem of switching on and off the power unit formed by multiple charging modules. However, each power unit corresponds to several charging modules, which leads to a waste of charging system resources when switching on and off several charging modules during low-power charging, and there is also a problem of waste of power distribution resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Some embodiments of the present disclosure are described below with reference to the accompanying drawings, in which: Figure 1 It is a flow chart of a stepless control method of a flexible power pool of a vehicle charging pile provided in an embodiment of the present application.
[0018] Figure 2 It is a schematic diagram of the internal structure of a flexible power pool stepless control system for a car charging pile provided in an embodiment of the present application. DETAILED DESCRIPTION
[0019] It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present disclosure, and do not mean that the present disclosure can only be implemented through the preferred embodiments. The preferred embodiments are only used to explain the technical principles of the present disclosure, and are not used to limit the protection scope of the present disclosure. Based on the preferred embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present disclosure.
[0020] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.
[0021] The technical solution proposed in the embodiments of the present application is described in detail below with reference to the accompanying drawings.
[0022] The embodiment provides a stepless control method for a flexible power pool of a vehicle charging pile, such as Figure 1 As shown, the method provided in the embodiment of the present application mainly includes the following steps: Step 110: After detecting that the charging pile is plugged in, insulation monitoring is performed through the fixed charging module or the non-fixed charging module at the current gun muzzle.
[0023] In some embodiments, insulation monitoring is performed through a fixed charging module or a non-fixed charging module of the current muzzle, which may be specifically: Check whether there is a fixed charging module at the current muzzle. When a fixed charging module is called, withdraw the called fixed charging module; perform insulation detection on the fixed charging module; when the insulation detection of the fixed charging module is unsuccessful or the fixed charging module does not exist, call the non-fixed charging module corresponding to the current muzzle; perform insulation detection on the non-fixed charging modules in turn until the insulation detection of a non-fixed charging module is successful.
[0024] It should be noted that the solution for performing insulation detection on the fixed charging module can be implemented by the existing technology and this application does not limit this.
[0025] After performing insulation testing on the fixed charging module, the method further includes: Get the reason why the fixed charging module insulation detection fails. If the reason is an insulation fault, stop charging and report the fixed charging module insulation fault.
[0026] After performing insulation testing on the non-fixed charging modules in sequence, the method further includes: Record the non-fixed charging module whose insulation test fails, and do not charge the non-fixed charging module whose insulation test fails.
[0027] Step 120: After the insulation monitoring is successful, determine whether the module power of the fixed charging module of the muzzle meets the BMS required power of the current vehicle.
[0028] After determining whether the module power of the fixed charging module of the gun muzzle meets the BMS required power of the current vehicle, the method further includes: When it is determined that the module power of the fixed charging module of this gun muzzle meets the BMS required power of the current car, the current car is charged through the fixed charging module of this gun muzzle.
[0029] It should be noted that whether the module power is greater than the BMS required power of the current car, when it is greater than the BMS required power of the current car, it is determined that the module power of the fixed charging module of this muzzle meets the BMS required power of the current car.
[0030] Step 130: When it is determined that the module power of the fixed charging module of the gun does not meet the BMS required power of the current vehicle, an unused non-fixed charging module is selected from the infinite non-fixed charging module pool.
[0031] The non-fixed charging module that has not been called is selected from the infinite non-fixed charging module pool, which may be: Determine whether the total module power of the non-fixed charging modules selected from the infinite non-fixed charging module pool that have not been called meets the BMS required power; when the BMS required power is not met, the non-fixed charging modules that have been called are deprived of the non-fixed charging modules that have not been called in sequence from low to high according to the preset priority of the non-fixed charging modules, until the total module power of the non-fixed charging modules that have not been called meets the BMS required power.
[0032] Step 140: Select a non-fixed charging module that meets the preset module switching rule from the non-fixed charging modules that have not been called, call the contactor corresponding to the non-fixed charging module, and close the contactor to start charging.
[0033] It should be noted that the preset module switching rule can be any existing requirement that can detect non-fixed charging modules.
[0034] In some embodiments, before closing the contactor to initiate charging, the method further comprises: Check whether the current pick-up contactor meets the preset pick-up contactor qualification requirements; when it meets the preset pick-up contactor qualification requirements, the pick-up contactor starts charging.
[0035] Step 150: During the charging process, based on a preset update cycle, determine whether there are any remaining non-fixed modules in the corresponding non-fixed charging module; release the remaining non-fixed modules with charging reservations, and continue charging with the remaining non-fixed charging modules.
[0036] It should be noted that the preset update period may be 1 minute.
[0037] In addition, this application Figure 2A flexible power pool stepless control system for a car charging pile is provided in the embodiment of the present application. Figure 2 As shown, the system provided in the embodiment of the present application mainly includes: The insulation module 210 is used to perform insulation monitoring through the fixed charging module or non-fixed charging module at the current gun muzzle after detecting that the charging pile is plugged in.
[0038] The insulation module 210 includes an insulation unit, which is used to detect whether there is a fixed charging module at the current muzzle. When a fixed charging module is called, the called fixed charging module is withdrawn; insulation detection is performed on the fixed charging module; when the insulation detection of the fixed charging module is unsuccessful or the fixed charging module does not exist, the non-fixed charging module corresponding to the current muzzle is called; insulation detection is performed on the non-fixed charging modules in turn until the insulation detection of a non-fixed charging module is successful.
[0039] The insulation module 210 includes a processing unit, which is used to obtain the reason why the insulation detection of the fixed charging module fails. When the reason is an insulation failure, charging is stopped and the insulation failure of the fixed charging module is reported; it is used to record the non-fixed charging module whose insulation detection fails, and not to charge the non-fixed charging module whose insulation detection fails.
[0040] The determination module 220 is used to determine whether the module power of the fixed charging module of the gun muzzle meets the BMS required power of the current car after the insulation monitoring is successful.
[0041] The selection module 230 is used to select an uncalled non-fixed charging module from the infinite non-fixed charging module pool when it is determined that the module power of the fixed charging module of the gun does not meet the BMS required power of the current vehicle.
[0042] The starting module 240 is used to select a non-fixed charging module that meets the preset module switching rule from the non-fixed charging modules that have not been called, call the contactor corresponding to the non-fixed charging module, and close the contactor to start charging.
[0043] The release module 250 is used to determine whether there are any remaining non-fixed modules in the corresponding non-fixed charging module based on a preset update cycle during the charging process; release the remaining non-fixed modules with charging reservations and continue charging with the remaining non-fixed charging modules.
[0044] In addition, an embodiment of the present application further provides a non-volatile computer storage medium on which executable instructions are stored. When the executable instructions are executed, a method for stepless control of a flexible power pool of a vehicle charging pile as described above is implemented.
[0045] So far, the technical solutions of the present disclosure have been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope of the present disclosure is not limited to these specific embodiments. Without departing from the technical principles of the present disclosure, those skilled in the art can split and combine the technical solutions in the above-mentioned various embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principle of the present disclosure will fall within the protection scope of the present disclosure.
Claims
1. A stepless control method for a flexible power pool of a car charging pile, characterized in that: The method comprises: After detecting that the charging pile is plugged in, insulation monitoring is performed through the fixed charging module or non-fixed charging module at the current gun muzzle; After the insulation monitoring is successful, determine whether the module power of the fixed charging module of this gun muzzle meets the BMS required power of the current car; When it is determined that the module power of the fixed charging module of the gun does not meet the BMS required power of the current vehicle, an unused non-fixed charging module is selected from the infinite non-fixed charging module pool; Select a non-fixed charging module that meets the preset module switching rule from the non-fixed charging modules that have not been called, call the contactor corresponding to the non-fixed charging module, and close the contactor to start charging; During the charging process, based on the preset update cycle, it is determined whether there are any remaining non-fixed modules in the corresponding non-fixed charging module; the remaining non-fixed modules with charging reservations are released, and the remaining non-fixed charging modules are used to continue charging.
2. The stepless control method of the flexible power pool of a vehicle charging pile according to claim 1, characterized in that: Insulation monitoring is performed through the fixed charging module or non-fixed charging module of the current muzzle, including: Detect whether there is a fixed charging module at the current muzzle. When a fixed charging module is called, withdraw the called fixed charging module; perform insulation detection on the fixed charging module; When the insulation test of the fixed charging module fails or there is no fixed charging module, the non-fixed charging module corresponding to the current muzzle is called; the insulation test of the non-fixed charging modules is performed in sequence until the insulation test of a non-fixed charging module succeeds.
3. The stepless control method of the flexible power pool of the automobile charging pile according to claim 2 is characterized in that: After performing insulation testing on the fixed charging module, the method further includes: Obtain the reason why the insulation detection of the fixed charging module fails. If the reason is an insulation fault, stop charging and report the insulation fault of the fixed charging module. After performing insulation detection on the non-fixed charging modules in sequence, the method further includes: Record the non-fixed charging module whose insulation test fails, and do not charge the non-fixed charging module whose insulation test fails.
4. The stepless control method of the flexible power pool of a vehicle charging pile according to claim 1, characterized in that: After determining whether the module power of the fixed charging module of the gun muzzle meets the BMS required power of the current vehicle, the method further includes: When it is determined that the module power of the fixed charging module of this gun muzzle meets the BMS required power of the current car, the current car is charged through the fixed charging module of this gun muzzle.
5. The stepless control method of the flexible power pool of a vehicle charging pile according to claim 1, characterized in that: Select an unused non-fixed charging module from the infinite non-fixed charging module pool, including: Determine whether the total module power of the non-fixed charging modules selected and not called in the infinite non-fixed charging module pool meets the power required by the BMS; When the BMS power requirement is not met, the non-fixed charging modules that have been called are deprived of their preset priorities from low to high until the total module power of the non-fixed charging modules that have not been called meets the BMS power requirement.
6. The stepless control method of the flexible power pool of a vehicle charging pile according to claim 1, characterized in that: Before the contactor is closed to start charging, the method further includes: Check whether the current pull-in contactor meets the preset pull-in contactor qualification requirements; When the preset pick-up contactor qualification requirements are met, the pick-up contactor starts charging.
7. A flexible power pool stepless control system for a car charging pile, characterized in that: The system comprises: The insulation module is used to perform insulation monitoring through the fixed charging module or non-fixed charging module at the current gun after detecting that the charging pile is plugged in; The determination module is used to determine whether the module power of the fixed charging module of the gun muzzle meets the BMS required power of the current car after the insulation monitoring is successful; A selection module is used to select an uncalled non-fixed charging module from the infinite non-fixed charging module pool when it is determined that the module power of the fixed charging module of the gun does not meet the BMS required power of the current vehicle; A starting module is used to select a non-fixed charging module that meets the preset module switching rules from the non-fixed charging modules that have not been called, call the contactor corresponding to the non-fixed charging module, and close the contactor to start charging; The release module is used to determine whether there are any remaining non-fixed modules in the corresponding non-fixed charging module based on a preset update cycle during the charging process; release the remaining non-fixed modules with charging reservations, and continue charging with the remaining non-fixed charging modules.
8. The automobile charging pile flexible power pool stepless control system according to claim 7 is characterized in that: The insulation module comprises an insulation unit, Used to detect whether there is a fixed charging module at the current muzzle. When a fixed charging module is called, the called fixed charging module is withdrawn; insulation detection is performed on the fixed charging module; When the insulation test of the fixed charging module fails or there is no fixed charging module, the non-fixed charging module corresponding to the current muzzle is called; the insulation test of the non-fixed charging modules is performed in sequence until the insulation test of a non-fixed charging module succeeds.
9. The automobile charging pile flexible power pool stepless control system according to claim 7, characterized in that: The insulation module includes a processing unit, Used to obtain the reason why the fixed charging module insulation detection fails. When the reason is an insulation fault, charging is stopped and the fixed charging module insulation fault is reported; It is used to record the non-fixed charging module when the insulation test fails, and not to charge the non-fixed charging module when the insulation test fails.
10. A non-volatile computer storage medium, characterized in that: Computer instructions are stored thereon, and when the computer instructions are executed, the method for stepless control of a flexible power pool of a vehicle charging pile is implemented as described in any one of claims 1-6.