Multi-power module mixed insertion charging pile and control method

Abstract

The invention discloses a multi-power-module mixed insertion charging pile and a control method, and aims to overcome the defects of an existing charging pile system in power distribution. The charging pile comprises a low-power module and a high-power module which can be switched in parallel; the distribution control unit dispatches the power module according to the vehicle charging demand; and the centralized controller realizes information interaction between the charging pile and the external equipment. The control method comprises the steps of detecting the vehicle charging demand, dispatching the power module through the distribution control unit, controlling the power module to work, and monitoring the charging state in real time for dynamic adjustment. According to the design, the charging efficiency is improved, the requirement of charging multiple vehicles at the same time is met, the utilization rate of charging facilities is improved, the charging safety and stability are enhanced, the user experience is improved, and further popularization of the electric vehicles is supported.

Description

Technical Field

[0001] The present invention relates to electric vehicle charging equipment, and in particular to a multi-power module mixed plug-in charging pile and a control method thereof. Background Art

[0002] As the world pays more and more attention to environmental protection and sustainable development, electric vehicles, as a green and low-carbon means of transportation, have been widely promoted and applied. The popularization of electric vehicles not only helps to reduce greenhouse gas emissions, but also effectively alleviates the problem of air pollution in urban transportation. However, the promotion of electric vehicles faces a key challenge: the lack of charging facilities. Specifically, the lack of charging facilities is mainly reflected in the uneven distribution of charging facilities. Charging facilities are relatively concentrated in the central area of ​​the city, while charging facilities are seriously lacking in remote areas and old communities. What is more serious is that the power configuration of existing charging facilities is unreasonable and cannot meet the charging needs of different types of vehicles. This problem has become the main bottleneck restricting the further popularization of electric vehicles.

[0003] The unreasonable power configuration of existing charging facilities is mainly manifested in the following aspects. First, most of the charging pile systems on the market use fixed-power charging modules to distribute power through contactors. This design has the problem of unreasonable power distribution when facing different types of electric vehicles. For example, the charging requirements of hybrid vehicles and pure electric vehicles are quite different, and the fixed-power charging modules cannot be flexibly adjusted, resulting in low charging efficiency. Specifically, hybrid vehicles usually only require a lower charging power, while pure electric vehicles require a higher charging power. The fixed-power charging module will cause power waste when charging hybrid vehicles; and when charging pure electric vehicles, it may not be able to meet its high power requirements. Secondly, during the peak charging period, the fixed-power charging module cannot meet the needs of multiple vehicles charging at the same time, further exacerbating the contradiction between supply and demand of charging facilities. These problems not only affect the user's charging experience, but also limit the further popularization of electric vehicles. Summary of the invention

[0004] The object of the present invention is to provide a multi-power module mixed plug-in charging pile and a control method to overcome the deficiencies of the existing charging pile system in power allocation.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: In one aspect, the present invention provides a multi-power module hybrid charging pile, comprising: Power module, the power module includes a low-power module and a high-power module, and the low-power module and the high-power module can be switched in parallel; A distribution control unit is used to dispatch the power modules according to the charging requirements of the vehicle; The centralized controller is used to realize information interaction between the charging pile and external devices, and send execution signals to the corresponding modules.

[0006] The power module also includes a contactor for realizing parallel switching between modules, and the contactor is controlled by a distribution control unit.

[0007] The distribution control unit includes a central control unit and an auxiliary control unit. The central control unit is connected to the auxiliary control unit and the contactor through communication.

[0008] The centralized controller can receive operation signals from user terminals, send information to user terminal devices, and exchange information with user terminal devices.

[0009] The operation signal sent by the user terminal includes a charging start instruction, a charging mode selection instruction, and a charging power adjustment instruction.

[0010] On the other hand, the present invention provides a multi-power module mixed plug-in charging pile control method, comprising: Detect the charging requirements of the vehicle and obtain the charging power information of the vehicle; According to the charging power information, the power modules are scheduled through the allocation control unit to determine the combination of power modules to be called and the working status of each module to achieve power allocation for the vehicle; Control the power module to work according to the scheduling results to charge the vehicle; During the charging process, the charging status is monitored in real time, and the scheduling of the power module is dynamically adjusted as needed.

[0011] It also includes detecting the status of the charging pile itself before detecting the charging needs of the vehicle.

[0012] According to the charging power information, the power modules are scheduled by the allocation control unit to determine the called power module combination and the working status of each module, so as to realize the power allocation of the vehicle, including giving priority to the small power module for insulation detection. If the small power module is occupied, the high power module is called. If both the small power module and the high power module are occupied, the small power module is kicked out for insulation detection.

[0013] During the charging process, the charging status is monitored in real time, and the scheduling of the power module is dynamically adjusted as needed, including monitoring the battery temperature, voltage, and current status of the charging vehicle.

[0014] It also includes recording the charging process data and uploading it to the cloud platform after charging is completed.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: A multi-power module hybrid charging pile can flexibly adjust power distribution according to the charging needs of different vehicles by introducing the mixed use of small power modules and large power modules. This flexible power distribution method avoids the problem of power waste or insufficient power when fixed power modules are used to charge different types of vehicles, thereby improving charging efficiency. During peak charging periods, this charging pile can combine multiple power modules through intelligent scheduling to provide simultaneous charging services for multiple vehicles, effectively alleviating the contradiction between supply and demand of charging facilities. In addition, the reasonable scheduling of different power modules enables the charging pile to fully play its role in different scenarios, improving the overall utilization rate of charging facilities. These features provide electric vehicles with more efficient and flexible charging services, help improve users' charging experience, and provide strong support for the further popularization and promotion of electric vehicles.

[0016] A control method for a multi-power module hybrid charging pile is disclosed. According to the charging power information of the vehicle, the power module is scheduled by allocating a control unit to determine the combination of the called power modules and the working status of each module. This flexible scheduling method can meet the charging needs of different types of vehicles and improve the adaptability and efficiency of charging. During the charging process, the charging status is monitored in real time, including the battery temperature, voltage, current and other information of the vehicle, and the scheduling of the power module is dynamically adjusted according to the monitoring results to ensure the safety and stability of the charging process. The user can send operation signals such as charging start instructions, charging mode selection instructions and charging power adjustment instructions through the terminal device to interact with the charging pile. This convenient operation method improves the user experience. After charging is completed, the data of the charging process is recorded and uploaded to the cloud platform. These data can be used for subsequent analysis and management, helping operators understand the use of charging facilities and optimize charging services. At the same time, it also provides users with services such as charging record query, which further improves user satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of power distribution of a multi-power module hybrid charging pile in accordance with an embodiment of the present invention.

[0018] Figure 2 Schematic diagram of a multi-power module mixed plug-in charging pile in an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of a multi-power module hybrid charging pile control method in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] As the world pays more and more attention to environmental protection and sustainable development, electric vehicles, as a green and low-carbon means of transportation, have been widely promoted and applied. The popularization of electric vehicles not only helps to reduce greenhouse gas emissions, but also effectively alleviates the problem of air pollution in urban transportation. However, the promotion of electric vehicles faces a key challenge: the lack of charging facilities. Specifically, the lack of charging facilities is mainly reflected in the uneven distribution of charging facilities. Charging facilities are relatively concentrated in the central area of ​​the city, while charging facilities are seriously lacking in remote areas and old communities. What is more serious is that the power configuration of existing charging facilities is unreasonable and cannot meet the charging needs of different types of vehicles. This problem has become the main bottleneck restricting the further popularization of electric vehicles.

[0021] The unreasonable power configuration of existing charging facilities is mainly manifested in the following aspects. First, most of the charging pile systems on the market use fixed-power charging modules to distribute power through contactors. This design has the problem of unreasonable power distribution when facing different types of electric vehicles. For example, the charging requirements of hybrid vehicles and pure electric vehicles are quite different, and the fixed-power charging modules cannot be flexibly adjusted, resulting in low charging efficiency. Specifically, hybrid vehicles usually only require a lower charging power, while pure electric vehicles require a higher charging power. The fixed-power charging module will cause power waste when charging hybrid vehicles; and when charging pure electric vehicles, it may not be able to meet its high power requirements. Secondly, during the peak charging period, the fixed-power charging module cannot meet the needs of multiple vehicles charging at the same time, further exacerbating the contradiction between supply and demand of charging facilities. These problems not only affect the user's charging experience, but also limit the further popularization of electric vehicles.

[0022] Therefore, a new charging pile system is needed that can flexibly adjust power distribution according to the charging needs of different vehicles, improve charging efficiency, and meet the needs of charging multiple vehicles at the same time. The multi-power module hybrid charging pile and control method proposed in this application aims to solve the shortcomings of the existing charging pile system in power distribution, and achieve more efficient and flexible charging services by introducing the mixed use and intelligent scheduling of different power modules. This method can not only improve the utilization rate of charging facilities, but also effectively alleviate the contradiction between supply and demand during the peak charging period, providing strong support for the further promotion of electric vehicles.

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Reference Figure 2 As shown, a specific implementation of a multifunctional module hybrid charging pile provided by the present invention includes: Power module, the power module includes a low-power module and a high-power module, and the low-power module and the high-power module can be switched in parallel; A distribution control unit is used to dispatch the power modules according to the charging requirements of the vehicle; The centralized controller is used to realize information interaction between the charging pile and external devices, and send execution signals to the corresponding modules.

[0025] The power module also includes a contactor for realizing parallel switching between modules, and the contactor is controlled by a distribution control unit.

[0026] The distribution control unit includes a central control unit and an auxiliary control unit. The central control unit is connected to the auxiliary control unit and the contactor through communication.

[0027] The centralized controller can receive operation signals from user terminals, send information to user terminal devices, and exchange information with user terminal devices.

[0028] The operation signal sent by the user terminal includes a charging start instruction, a charging mode selection instruction, and a charging power adjustment instruction.

[0029] Specifically, P+ represents the positive direction of the power output part, P- represents the negative direction of the power output part, C represents the central control unit CMU of the charging pile, T represents the auxiliary control unit TMU, the central control unit CMU and the auxiliary control unit TMU are connected through CAN communication (Controller Area Network), CMU communicates with the power module M1, power module M2, power module M3, and power module M4 of the positive direction P+ of the power output part and the negative direction P- of the power output part through the CAN protocol, and the Do port (digital output interface) on the CMU controls and monitors the status of contactors K1~K10. J represents the centralized controller. As a networking device of the charging pile itself, customers and third parties such as customer operation platforms can communicate with the centralized controller to realize customer human-computer interaction operations on the overall control of the charging pile and operation operations of the customer operation platform.

[0030] like Figure 1The figure shows a schematic diagram of power distribution of a multi-power module hybrid charging pile in a specific implementation. P+ represents the positive direction of the power output part, A represents the A charging gun, and B represents the B charging gun. In this embodiment, the small power modules in the power module are M1 and M3, with a specific power of 40KW, and the large power modules are M2 and M4, with a specific power of 80KW. K1~K10 represent contactors respectively. The direct connection module of the A charging gun is M1 or M2, and the direct connection module of the B charging gun is M3 or M4. According to the actual vehicle needs, the contactor can be controlled to switch.

[0031] On the other hand, Figure 3 As shown, the present invention also provides a multi-power module mixed plug-in charging pile control method, comprising: Detect the charging requirements of the vehicle and obtain the charging power information of the vehicle; According to the charging power information, the power modules are scheduled through the allocation control unit to determine the combination of power modules to be called and the working status of each module to achieve power allocation for the vehicle; Control the power module to work according to the scheduling results to charge the vehicle; During the charging process, the charging status is monitored in real time, and the scheduling of the power module is dynamically adjusted as needed.

[0032] It also includes detecting the status of the charging pile itself before detecting the charging needs of the vehicle.

[0033] According to the charging power information, the power modules are scheduled by the allocation control unit to determine the called power module combination and the working status of each module, so as to realize the power allocation of the vehicle, including giving priority to the small power module for insulation detection. If the small power module is occupied, the high power module is called. If both the small power module and the high power module are occupied, the small power module is kicked out for insulation detection.

[0034] During the charging process, the charging status is monitored in real time, and the scheduling of the power module is dynamically adjusted as needed, including monitoring the battery temperature, voltage, and current status of the charging vehicle.

[0035] It also includes recording the charging process data and uploading it to the cloud platform after charging is completed.

[0036] When the vehicle is plugged into the charging gun, the central control unit CMU and the auxiliary control unit TMU will immediately detect the connection status of gun A and gun B. After confirming that the connection is normal, the central control unit CMU and the auxiliary control unit TMU upload relevant information of the vehicle, such as MACID, to the cloud platform to prepare for subsequent charging operations.

[0037] When the user starts charging through the user terminal, the centralized controller J will receive the signal from the user terminal and issue a power-on command. After the charging pile responds to the power-on command, the 40KW module of each gun is preferentially selected for insulation detection to ensure charging safety. If the 40KW module is occupied, the system will automatically call the 80KW module; if both the 40KW and 80KW modules are occupied, the 40KW module will be kicked out for insulation detection.

[0038] The central control unit CMU sends scheduling instructions to the power module and contactor through CAN communication according to the vehicle's charging needs. Specifically, the central control unit CMU determines the combination of power modules to be called and the working status of each module according to the charging power required by the vehicle.

[0039] The specific scheduling examples are as follows: A gun single gun charging: A gun requirement: Aq≤40KW, K3 is closed, and M1 (40KW module) is called; 40KW<Aq≤80KW, K7 is closed, and two 40KW modules M1 and M3 are called; 80KW<Aq≤120KW, K3, K4 are closed, M1, M2 modules are called, and the output is 120KW; 120KW<Aq≤160KW, K3, K4, K7 are closed, M1, M2, M3 modules are called, and the output is 160KW; 160KW<Aq≤240KW, K3, K4, K7, K9 are closed, and M1, M2, M3, M4 modules are called to output a total of 240KW.

[0040] B-gun single gun charging: Bq≤40KW, K5 is closed, and M3 (40KW module) is called; 40KW<Bq≤80KW, K6 is closed, and two 40KW modules M3 and M4 are called; 80KW<Bq≤120KW, K5, K4 are closed, M3, M2 modules are called, and the output is 120KW; 120KW<Bq≤160KW, K5, K4, K6 are closed, M3, M2, M4 modules are called, and the output is 160KW; 160KW<Bq≤240KW, K5, K4, K6, K9 are closed, and M3, M2, M4, M1 modules are called to output a total of 240KW.

[0041] A, B guns are charged at the same time: Aq≤40KW, B gun requires Bq≤40KW: K3, K5 are closed, and M1 and M3 modules are called respectively, each outputting 40KW.

[0042] Aq≤40KW, B gun requires 40KW<Bq≤80KW: K3, K6 are closed, and M1 and M4 modules are called respectively, outputting 40KW and 80KW respectively.

[0043] Aq≤40KW, B gun requires 80KW<Bq≤120KW: K3, K5, K6 are closed, and M1, M3, M4 modules are called respectively, and the outputs are 40KW and 120KW respectively.

[0044] Aq≤40KW, B gun requires 120KW<Bq≤240KW: K3, K5, K6, K7 are closed, and M1, M3, M4 modules are called respectively, and the outputs are 40KW and 240KW respectively.

[0045] Bq≤40KW, A gun requires 40KW<Aq≤80KW: K5 and K7 are closed, and M3 and M1 modules are called respectively, and the outputs are 40KW and 80KW respectively.

[0046] Bq≤40KW, A gun requires 80KW<Aq≤120KW: K5, K4, K7 are closed, and M3, M2, M1 modules are called respectively, and the outputs are 40KW and 120KW respectively.

[0047] Bq≤40KW, A gun requires 120KW<Aq≤240KW: K5, K4, K7, K9 are closed, and M3, M2, M1 modules are called respectively, and the outputs are 40KW and 240KW respectively.

[0048] During the operation of the power module, the central control unit CMU controls the closing and opening of the contactor (K1~K10) through the Do port to realize the switching and combination of the power module. The power module starts working according to the scheduling instruction to charge the vehicle. At the same time, the central control unit CMU monitors the charging status in real time, including the battery temperature, voltage, current and other information of the vehicle. According to the monitoring results, the central control unit CMU dynamically adjusts the scheduling of the power module through CAN communication to ensure the safety and stability of the charging process.

[0049] After charging is completed, the central control unit CMU stops the power module and records the data of the charging process and uploads it to the cloud platform for data analysis and management.

[0050] For the above-mentioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the order of the actions described, because according to the present invention, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0051] It should be noted that the technical features recorded in the various embodiments in this specification can be replaced or combined with each other, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0052] The steps in the methods of the embodiments of the present application can be adjusted in order, combined, and deleted according to actual needs.

[0053] The modules and sub-modules in the devices and terminals in the embodiments of the present application can be combined, divided and deleted according to actual needs.

[0054] In the several embodiments provided in the present application, it should be understood that the disclosed terminals, devices and methods can be implemented in other ways. For example, the terminal embodiments described above are only schematic, for example, the division of modules or submodules is only a logical function division, and there may be other division methods in actual implementation, for example, multiple submodules or modules can be combined or integrated into another module, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0055] The modules or submodules described as separate components may or may not be physically separated, and the components of the modules or submodules may or may not be physical modules or submodules, that is, they may be located in one place, or they may be distributed on multiple network modules or submodules. Some or all of the modules or submodules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0056] In addition, each functional module or submodule in each embodiment of the present application may be integrated into one processing module, or each module or submodule may exist physically separately, or two or more modules or submodules may be integrated into one module. The above-mentioned integrated modules or submodules may be implemented in the form of hardware or in the form of software functional modules or submodules.

[0057] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article 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, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-power module mixed plug-in charging pile, characterized in that: include: A power module, wherein the power module comprises a low-power module and a high-power module, and the low-power module and the high-power module can be switched in parallel; An allocation control unit, used for scheduling the power module according to the charging demand of the vehicle; The centralized controller is used to realize information interaction between the charging pile and external devices, and send execution signals to the corresponding modules.

2. A multi-power module hybrid charging pile according to claim 1, characterized in that: The power module further comprises a contactor for realizing parallel switching between modules, and the contactor is controlled by the allocation control unit.

3. A multi-power module hybrid charging pile according to claim 2, characterized in that: The distribution control unit includes a central control unit and an auxiliary control unit. The central control unit establishes communication connections with the auxiliary control unit and the contactor respectively.

4. The multi-power module hybrid charging pile according to claim 1, characterized in that: The centralized controller can receive operation signals sent by user terminals, send information to user terminal devices, and exchange information with user terminal devices.

5. A multi-power module hybrid charging pile according to claim 4, characterized in that: The operation signal sent by the user terminal includes a charging start instruction, a charging mode selection instruction and a charging power adjustment instruction.

6. A multi-power module mixed plug-in charging pile control method, characterized in that: include: Detect the charging requirements of the vehicle and obtain the charging power information of the vehicle; According to the charging power information, the power modules are dispatched through the allocation control unit to determine the combination of power modules to be called and the working status of each module, so as to realize the power allocation of the vehicle; Control the power module to work according to the scheduling results to charge the vehicle; During the charging process, the charging status is monitored in real time, and the scheduling of the power module is dynamically adjusted as needed.

7. A multi-power module mixed plug-in charging pile control method according to claim 6, characterized in that: It also includes detecting the status of the charging pile itself before detecting the charging needs of the vehicle.

8. A multi-power module mixed plug-in charging pile control method according to claim 6, characterized in that: According to the charging power information, the power modules are scheduled by allocating the control unit to determine the called power module combination and the working status of each module, so as to realize the power allocation of the vehicle, including giving priority to the small power module for insulation detection. If the small power module is occupied, the high power module is called. If both the small power module and the high power module are occupied, the small power module is kicked out for insulation detection.

9. A multi-power module mixed plug-in charging pile control method according to claim 6, characterized in that: During the charging process, the charging status is monitored in real time, and the scheduling of the power module is dynamically adjusted as needed, including monitoring the battery temperature, voltage, and current status of the charging vehicle.

10. A multi-power module mixed plug-in charging pile control method according to claim 6, characterized in that: It also includes recording the charging process data and uploading it to the cloud platform after charging is completed.

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