Charging efficiency calculation device, method, terminal and medium based on charging pile and BMS

Abstract

The present application provides a charging efficiency calculation device, method, terminal and medium based on a charging pile and a BMS. During the charging process of a vehicle, the data acquisition module of the device collects the charging pile input electrical signal data at the input end of the charging pile to be tested and the charging pile output electrical signal data at the output end in real time, and the battery management system interface module obtains the battery BMS data from the battery management system of the vehicle in real time; the data processing and calculation module uses a power integration algorithm to calculate the real-time charging efficiency of the charging pile to be tested based on the data collected by the data acquisition module and the battery management system interface module. The present application realizes the real-time calculation of the charging efficiency by adopting an architecture for collaborative monitoring of the charging pile and the battery management system, and fully considers the loss during the charging process to improve the accuracy of the efficiency calculation; the present application can adapt to different types of charging piles and electric vehicles, and has good versatility and expansibility.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle charging technology, and in particular to a charging efficiency calculation device, method, terminal and medium based on a charging pile and a BMS. Background Art

[0002] With the popularity of electric vehicles, charging piles are important facilities for electric vehicle energy supplementation, and their charging and discharging efficiency is directly related to the economy and environment of energy. However, the current charging piles lack effective means to monitor the energy conversion efficiency in real time during the charging process, which makes it difficult to accurately evaluate the energy efficiency ratio of the charging process, which is not conducive to the optimized operation and maintenance of the charging piles. In the prior art, the charging efficiency is estimated by calculating the ratio of the input power of the charging pile to the output power of the charging pile. However, this direct calculation method ignores the various losses in the charging process, resulting in a large deviation between the calculation results and the actual situation; the charging process is dynamically changing, the battery's receiving capacity and charging strategy will change over time, and the direct calculation method is static. The calculation method cannot be adjusted according to the real-time changes in the charging process, resulting in delayed or inaccurate efficiency calculation results, and cannot reflect the real efficiency changes in time; the direct calculation method is difficult to adapt to different types of charging piles and electric vehicles, as well as the dynamic changes in the charging process, resulting in limited generalization of the calculation results. Summary of the invention

[0003] In view of the shortcomings of the prior art described above, the purpose of the present application is to provide a charging efficiency calculation device, method, terminal and medium based on a charging pile and a BMS, so as to solve the problem of inaccurate efficiency calculation results of the direct calculation method of the prior art.

[0004] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present application provides a charging efficiency calculation device based on a charging pile and a BMS, which is connected to a vehicle charging system, wherein the vehicle charging system includes: a charging pile to be tested and a vehicle charged by the charging pile to be tested, and the device includes: a data acquisition module, a battery management system interface module and a data processing and calculation module; wherein the data acquisition module is arranged on the charging pile to be tested; the battery management system interface module is connected to the battery management system of the vehicle charged by the charging pile to be tested; the data processing and calculation module is connected to the data acquisition module and the battery management system interface module respectively; during the charging process of the vehicle, the data acquisition module collects the charging pile input electrical signal data at the input end of the charging pile to be tested and the charging pile output electrical signal data at the output end of the charging pile to be tested in real time, and the battery management system interface module obtains the battery BMS data from the battery management system of the vehicle in real time; the data processing and calculation module calculates the real-time charging efficiency of the charging pile to be tested according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data using a power integration algorithm.

[0005] In some embodiments of the first aspect of the present application, the data acquisition module includes: an input current sensor and an input voltage sensor arranged at the input end of the charging pile to be tested; wherein the input current sensor is used to collect input current data of the input end of the charging pile to be tested in real time during the vehicle charging process; the input voltage sensor is used to collect input voltage data of the input end of the charging pile to be tested in real time during the vehicle charging process; the input current data of the input end of the charging pile to be tested and the input voltage data of the input end of the charging pile to be tested constitute the charging pile input electrical signal data of the input end of the charging pile to be tested.

[0006] In some embodiments of the first aspect of the present application, the data acquisition module also includes: an output current sensor and an output voltage sensor arranged at the output end of the charging pile to be tested; wherein the output current sensor is used to collect the output current data of the output end of the charging pile to be tested in real time during the vehicle charging process; the output voltage sensor is used to collect the output voltage data of the output end of the charging pile to be tested in real time during the vehicle charging process; the output current data of the output end of the charging pile to be tested and the output voltage data of the output end of the charging pile to be tested constitute the charging pile output electrical signal data of the output end of the charging pile to be tested.

[0007] In some embodiments of the first aspect of the present application, the battery BMS data includes: input current data and input voltage data of the vehicle battery.

[0008] In some embodiments of the first aspect of the present application, the data processing and calculation module includes: a power calculation unit, which is used to use a power integration algorithm to calculate the input power of the charging pile, the output power of the charging pile and the battery charge according to the input current data of the input end of the charging pile to be tested, the input voltage data of the input end of the charging pile to be tested, the output current data of the output end of the charging pile to be tested, the output voltage data of the output end of the charging pile to be tested, the input current data of the vehicle battery and the output current data of the vehicle battery; a charging efficiency calculation unit, which is used to calculate the real-time charging efficiency of the charging pile to be tested based on the input power of the charging pile, the output power of the charging pile and the battery charge.

[0009] In some embodiments of the first aspect of the present application, the power integration algorithm includes: a charging pile input power integration algorithm, a charging pile output power integration algorithm and a battery charging power integration algorithm; wherein, according to the input current data and input voltage data of the input end of the charging pile to be tested, the charging pile input power integration algorithm is used to calculate the charging pile input power; according to the output current data and output voltage data of the output end of the charging pile to be tested, the charging pile output power integration algorithm is used to calculate the charging pile output power; according to the input current data and input voltage data of the vehicle battery, the battery charging power integration algorithm is used to calculate the battery charging power.

[0010] In some embodiments of the first aspect of the present application, the charging efficiency calculation unit includes: a first charging efficiency calculation subunit, used to calculate the first charging efficiency based on the input power of the charging pile and the output power of the charging pile; calculate the second charging efficiency based on the battery charged power and the output power of the charging pile; a second charging efficiency calculation subunit, used to multiply the first charging efficiency by the second charging efficiency to obtain the real-time charging efficiency of the charging pile to be tested.

[0011] To achieve the above-mentioned purpose and other related purposes, the second aspect of the present application provides a charging efficiency calculation method based on a charging pile and a BMS, which is applied to a vehicle charging system, wherein the vehicle charging system comprises: a charging pile to be tested and a vehicle charged by the charging pile to be tested, and the method comprises: during the charging process of the vehicle, real-time collection of charging pile input electrical signal data at the input end of the charging pile to be tested and charging pile output electrical signal data at the output end of the charging pile to be tested, and real-time acquisition of battery BMS data from the battery management system of the vehicle; using a power integration algorithm, the real-time charging efficiency of the charging pile to be tested is calculated according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data.

[0012] To achieve the above-mentioned purpose and other related purposes, the third aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the charging efficiency calculation method based on the charging pile and the BMS is implemented.

[0013] To achieve the above-mentioned purpose and other related purposes, the fourth aspect of the present application provides an electronic terminal, including a memory, a processor and a computer program stored in the memory; the processor executes the computer program to implement the charging efficiency calculation method based on the charging pile and BMS.

[0014] As described above, the charging efficiency calculation device, method, terminal and medium based on the charging pile and BMS of the present application have the following beneficial effects:

[0015] (1) This application ensures seamless connection of data collection, processing and charging efficiency calculation by adopting an architecture for collaborative monitoring of charging piles and battery management systems;

[0016] (2) This application realizes the real-time calculation of charging efficiency and fully considers the loss during the charging process, thereby improving the accuracy of charging efficiency calculation;

[0017] (3) This application can adapt to different types of charging piles and electric vehicles and has good versatility and scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a schematic block diagram of a charging efficiency calculation device based on a charging pile and a BMS in one embodiment of the present application.

[0019] Figure 2 Shown is a schematic diagram of the charging efficiency calculation process in one embodiment of the present application.

[0020] Figure 3 Shown is a flow chart of a charging efficiency calculation method based on a charging pile and a BMS in one embodiment of the present application.

[0021] Figure 4 Shown is a schematic diagram of the structure of an electronic terminal in one embodiment of the present application. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference.

[0024] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" represent examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0025] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can represent: a, b, c, ab, ac, bc or abc, where a, b, c can be single or multiple.

[0026] To facilitate understanding of the embodiments of the present application, first Figure 1 Detailed description. Figure 1 A schematic block diagram of a charging efficiency calculation device based on a charging pile and a BMS in an embodiment of the present invention is shown. The charging efficiency calculation device 1 based on a charging pile and a BMS in this embodiment is connected to a vehicle charging system 2, and the vehicle charging system 2 includes: a charging pile 21 to be tested and a vehicle 22 charged by the charging pile 21 to be tested. The charging efficiency calculation device 1 based on the charging pile and the BMS includes:

[0027] Data acquisition module 11, battery management system interface module 12 and data processing and calculation module 13;

[0028] The data acquisition module 11 is arranged at the charging pile to be tested; the battery management system interface module 12 is connected to the battery management system of the vehicle 22 charged by the charging pile 21 to be tested; the data processing and calculation module 13 is connected to the data acquisition module 11 and the battery management system interface module 12 respectively;

[0029] During the charging process of the vehicle, the data acquisition module 11 collects the charging pile input electrical signal data at the input end of the charging pile to be tested and the charging pile output electrical signal data at the output end of the charging pile to be tested in real time, and the battery management system interface module 12 obtains the battery BMS data from the battery management system of the vehicle 22 in real time;

[0030] The data processing and calculation module 13 uses a power integration algorithm to calculate the real-time charging efficiency of the charging pile to be tested according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data.

[0031] It should be understood that the division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional module in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0032] It should be noted that the vehicle charging process is the process of charging the electric vehicle after the charging pile is connected to the electric vehicle and charging is started. The battery management system (BMS) is an electronic system used to monitor and manage the battery energy storage unit of electric vehicles. It is crucial for battery packs in applications such as electric vehicles. The main functions of the battery management system include but are not limited to battery operating status monitoring, battery charge and discharge management, balancing between single cells, fault diagnosis and protection, etc.

[0033] It should also be noted that the present invention utilizes the battery-end data provided by the battery management system in combination with the electrical signal data of the charging pile to achieve the refinement of the charging efficiency calculation. The integration of the battery BMS data not only improves the accuracy of the calculation, but also can more accurately reflect the actual amount of electricity charged into the battery. The present invention ensures the seamless connection of data collection, processing and charging efficiency calculation by adopting an architecture for collaborative monitoring of the charging pile and the battery management system. The device design of the present invention ensures the real-time calculation of the charging efficiency, can adapt to different types of charging piles and electric vehicles, has good versatility and expansibility, and uses the battery BMS data to further optimize the charging strategy and improve the safety of the charging process and the battery life.

[0034] In one embodiment, if Figure 2 As shown, the specific process of calculating the charging efficiency includes: the data acquisition module collects the charging pile input electrical signal data at the input end of the charging pile to be tested and the charging pile output electrical signal data at the output end of the charging pile to be tested in real time, and obtains the battery BMS data in real time; uses the power integration algorithm to calculate the real-time charging efficiency of the charging pile to be tested based on the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data.

[0035] In one embodiment, the data acquisition module includes: an input current sensor and an input voltage sensor arranged at the input end of the charging pile to be tested; wherein the input current sensor is used to collect input current data of the input end of the charging pile to be tested in real time during the vehicle charging process; the input voltage sensor is used to collect input voltage data of the input end of the charging pile to be tested in real time during the vehicle charging process; the input current data of the input end of the charging pile to be tested and the input voltage data of the input end of the charging pile to be tested constitute the charging pile input electrical signal data of the input end of the charging pile to be tested.

[0036] It should be noted that the input-end current sensor may use an existing commonly used current sensor to measure current, and the input-end voltage sensor may use an existing commonly used voltage sensor to measure voltage, and the present invention does not limit this.

[0037] In one embodiment, the data acquisition module also includes: an output current sensor and an output voltage sensor arranged at the output end of the charging pile to be tested; wherein the output current sensor is used to collect the output current data of the output end of the charging pile to be tested in real time during the vehicle charging process; the output voltage sensor is used to collect the output voltage data of the output end of the charging pile to be tested in real time during the vehicle charging process; the output current data of the output end of the charging pile to be tested and the output voltage data of the output end of the charging pile to be tested constitute the charging pile output electrical signal data of the output end of the charging pile to be tested.

[0038] It should be noted that the output end current sensor may use an existing commonly used current sensor to measure current, and the output end voltage sensor may use an existing commonly used voltage sensor to measure voltage, and the present invention does not limit this.

[0039] In one embodiment, the battery managed by the battery management system of the vehicle charged by the charging pile to be tested is the vehicle battery of the vehicle charged by the charging pile to be tested; the battery BMS data of the vehicle battery managed by the battery management system can be obtained from the battery management system of the vehicle charged by the charging pile to be tested through the BMS (battery management system) interface.

[0040] In one embodiment, the battery BMS data includes: input current data and input voltage data of the vehicle battery.

[0041] In one embodiment, the data processing and calculation module includes: a power calculation unit, which is used to use a power integration algorithm to calculate the input power of the charging pile, the output power of the charging pile and the battery charging power according to the input current data of the input end of the charging pile to be tested, the input voltage data of the input end of the charging pile to be tested, the output current data of the output end of the charging pile to be tested, the output voltage data of the output end of the charging pile to be tested, the input current data of the vehicle battery and the output current data of the vehicle battery; a charging efficiency calculation unit, which is used to calculate the real-time charging efficiency of the charging pile to be tested according to the input power of the charging pile, the output power of the charging pile and the battery charging power.

[0042] In one embodiment, the power integration algorithm includes: a charging pile input power integration algorithm, a charging pile output power integration algorithm, and a battery charging power integration algorithm.

[0043] In one embodiment, the specific process of calculating the charging pile input power, the charging pile output power and the battery charge power by using the power integration algorithm includes:

[0044] According to the input current data and input voltage data of the input end of the charging pile to be tested, the input power of the charging pile is calculated using the charging pile input power integration algorithm;

[0045] The calculation formula of the charging pile input power integration algorithm refers to the following formula 1:

[0046] ;(Formula 1)

[0047] And among them, Input power to the charging pile. is the input current data of the charging pile input end, is the input voltage data of the charging pile input terminal, For points;

[0048] According to the output current data and output voltage data of the output end of the charging pile to be tested, the output power of the charging pile is calculated using the charging pile output power integration algorithm;

[0049] The calculation formula of the charging pile output power integration algorithm refers to the following formula 2:

[0050] ;(Formula 2)

[0051] And among them, Output power to the charging pile. is the output current data of the charging pile output end, is the output voltage data of the charging pile output end, For points;

[0052] According to the input current data and input voltage data of the vehicle battery, the battery charging power integration algorithm is used to calculate the battery charging power;

[0053] The calculation formula of the battery charge integration algorithm refers to the following formula 3:

[0054] ;(Formula 3)

[0055] And among them, Charge the battery. is the input current data of the vehicle battery, is the input voltage data of the vehicle battery, For points.

[0056] It should be noted that the loss of the charging pile itself can be calculated based on the changes in the electrical signals at the input and output ends of the charging pile; the charging losses such as the cable and battery internal resistance can be calculated based on the electrical signal data at the output end of the charging pile and the battery BMS data. By coordinating the monitoring of the charging pile and the battery management system, the charging losses such as the cable and battery internal resistance can be calculated, which reduces the calculation error, improves the accuracy of the charging efficiency calculation, and helps the optimization scheduling and fault diagnosis of the charging pile.

[0057] In one embodiment, the charging efficiency calculation unit includes: a first charging efficiency calculation subunit, used to calculate the first charging efficiency according to the input power of the charging pile and the output power of the charging pile; calculate the second charging efficiency according to the battery charged power and the output power of the charging pile; a second charging efficiency calculation subunit, used to multiply the first charging efficiency by the second charging efficiency to obtain the real-time charging efficiency of the charging pile to be tested.

[0058] Specifically, according to the input power of the charging pile and the output power of the charging pile, refer to the following formula 4 to calculate the first charging efficiency:

[0059] ;(Formula 4)

[0060] in, is the first charging efficiency, Output power to the charging pile. Input power to the charging station.

[0061] Furthermore, according to the amount of electricity charged into the battery and the amount of electricity output from the charging pile, the second charging efficiency is calculated with reference to the following formula 5:

[0062] ;(Formula 5)

[0063] in, is the second charging efficiency, Output power to the charging pile. Charge the battery.

[0064] Further, referring to the following formula 6, the first charging efficiency is multiplied by the second charging efficiency to obtain the real-time charging efficiency of the charging pile to be tested:

[0065] ;(Formula 6)

[0066] Among them, EFF represents the real-time charging efficiency of the charging pile to be tested. is the first charging efficiency, It should be noted that the present invention can calculate the charging efficiency in real time and can quickly respond to dynamic changes in the charging process.

[0067] In one embodiment, the data processing and computing module may be a chip, and the types include but are not limited to CPU, MCU, etc. Other devices with data processing and computing functions may also be used, and the present invention does not limit this.

[0068] In one embodiment, the charging efficiency calculation device based on the charging pile and the BMS is also connected to a user terminal or a monitoring center, which receives and displays the real-time charging efficiency of the charging pile to be tested, thereby facilitating monitoring by users and operation and maintenance personnel. It should be noted that the user terminal includes but is not limited to computers, mobile phones, etc., and the present invention does not limit this.

[0069] Figure 3 : is a flow chart of a charging efficiency calculation method based on a charging pile and a BMS provided in an embodiment of the present application. Figure 3 As shown, the charging efficiency calculation method based on the charging pile and the BMS is applied to a vehicle charging system, wherein the vehicle charging system comprises: a charging pile to be tested and a vehicle charged by the charging pile to be tested, and the method comprises:

[0070] Step S31: During the charging process of the vehicle, the charging pile input electrical signal data at the input end of the charging pile to be tested and the charging pile output electrical signal data at the output end of the charging pile to be tested are collected in real time, and the battery BMS data is obtained in real time from the battery management system of the vehicle.

[0071] Step S32: using a power integration algorithm, the real-time charging efficiency of the charging pile to be tested is calculated according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data.

[0072] It should be understood that the specific implementation of the above method steps has been described in detail in the above device embodiment, and for the sake of simplicity, it will not be repeated here.

[0073] In one embodiment, the charging pile input electrical signal data includes: input current data of the input end of the charging pile to be tested and input voltage data of the input end of the charging pile to be tested; the charging pile input electrical signal data is collected by an input end current sensor and an input end voltage sensor arranged at the input end of the charging pile to be tested; the input end current sensor is used to collect the input current data of the input end of the charging pile to be tested in real time during the vehicle charging process; the input end voltage sensor is used to collect the input voltage data of the input end of the charging pile to be tested in real time during the vehicle charging process.

[0074] In one embodiment, the charging pile output electrical signal data includes: output current data of the output end of the charging pile to be tested and output voltage data of the output end of the charging pile to be tested; the charging pile output electrical signal data is collected by an output end current sensor and an output end voltage sensor arranged at the output end of the charging pile to be tested; the output end current sensor is used to collect the output current data of the output end of the charging pile to be tested in real time during the vehicle charging process; the output end voltage sensor is used to collect the output voltage data of the output end of the charging pile to be tested in real time during the vehicle charging process.

[0075] In one embodiment, the battery managed by the battery management system of the vehicle charged by the charging pile to be tested is the vehicle battery of the vehicle charged by the charging pile to be tested; the battery BMS data of the vehicle battery managed by the battery management system can be obtained from the battery management system of the vehicle charged by the charging pile to be tested through the BMS (battery management system) interface module.

[0076] In one embodiment, the battery BMS data includes: input current data and input voltage data of the vehicle battery.

[0077] In one embodiment, a power integration algorithm is used to calculate the real-time charging efficiency of the charging pile to be tested according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data, including: using a power integration algorithm, according to the input current data of the input end of the charging pile to be tested, the input voltage data of the input end of the charging pile to be tested, the output current data of the output end of the charging pile to be tested, the output voltage data of the output end of the charging pile to be tested, the input current data of the vehicle battery and the output current data of the vehicle battery, the charging pile input power, the charging pile output power and the battery charge-in power are calculated; according to the charging pile input power, the charging pile output power and the battery charge-in power, the real-time charging efficiency of the charging pile to be tested is calculated.

[0078] In one embodiment, the power integration algorithm includes: a charging pile input power integration algorithm, a charging pile output power integration algorithm, and a battery charging power integration algorithm;

[0079] According to the input current data and input voltage data of the input end of the charging pile to be tested, the input power of the charging pile is calculated using the charging pile input power integration algorithm;

[0080] According to the output current data and output voltage data of the output end of the charging pile to be tested, the output power of the charging pile is calculated using the charging pile output power integration algorithm;

[0081] The battery charged power is calculated according to the input current data and input voltage data of the vehicle battery using the battery charged power integration algorithm.

[0082] In one embodiment, the specific process of calculating the real-time charging efficiency of the charging pile to be tested based on the input power of the charging pile, the output power of the charging pile and the charged power of the battery includes: calculating the first charging efficiency based on the input power of the charging pile and the output power of the charging pile; calculating the second charging efficiency based on the charged power of the battery and the output power of the charging pile; multiplying the first charging efficiency by the second charging efficiency to obtain the real-time charging efficiency of the charging pile to be tested.

[0083] In one embodiment, the charging efficiency calculation device based on the charging pile and the BMS further includes: a communication module, which is used to send the calculated real-time charging efficiency of the charging pile to be tested to the user terminal or the monitoring center, so that the user terminal or the monitoring center can receive and display the real-time charging efficiency of the charging pile to be tested, thereby facilitating monitoring by users and operation and maintenance personnel. It should be noted that the user terminal includes but is not limited to computers, mobile phones, etc., and the present invention does not limit this.

[0084] Figure 4 is a schematic block diagram of an electronic terminal provided in an embodiment of the present application. Figure 4 As shown, the electronic terminal 400 includes: at least one processor 401, a memory 402, at least one network interface 403 and a user interface 405. The various components in the device are coupled together through a bus system 404. It can be understood that the bus system 404 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 404 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Figure 4 In the specification, various buses are labeled as bus systems.

[0085] The user interface 405 may include a display, a keyboard, a mouse, a trackball, a click gun, keys, buttons, a touch pad or a touch screen.

[0086] It is understood that the memory 402 can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM). The memory described in the embodiments of the present invention is intended to include but is not limited to these and any other suitable categories of memory.

[0087] The memory 402 in the embodiment of the present invention is used to store various categories of data to support the operation of the electronic terminal 400. Examples of these data include: any executable program for operating on the electronic terminal 400, such as an operating system 4021 and an application 4022; the operating system 4021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application 4022 may include various applications, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. The charging efficiency calculation method based on the charging pile and BMS provided in the embodiment of the present invention may be included in the application 4022.

[0088] The method disclosed in the above embodiment of the present invention can be applied to the processor 401, or implemented by the processor 401. The processor 401 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit in the processor 401 or the instruction in the form of software. The above processor 401 may be a general processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The processor 401 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiment of the present invention. The general processor 401 may be a microprocessor or any conventional processor, etc. In combination with the steps of the accessory optimization method provided in the embodiment of the present invention, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0089] In an exemplary embodiment, the electronic terminal 400 may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD) to execute the aforementioned method.

[0090] According to the method provided in the embodiment of the present application, the present application also provides a computer program product, which includes: a computer program code, when the computer program code is run on a computer, the computer executes Figure 3 The charging efficiency calculation method based on the charging pile and BMS in the illustrated embodiment.

[0091] According to the method provided in the embodiment of the present application, the present application also provides a computer-readable storage medium, which stores a program code, and when the program code is run on a computer, the computer executes Figure 3 The charging efficiency calculation method based on the charging pile and BMS in the illustrated embodiment.

[0092] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process, a processor, an object, an executable file, an execution thread, a program and / or a computer running on a processor. By way of illustration, both applications and computing devices running on a computing device can be components. One or more components may reside in a process and / or an execution thread, and a component may be located on a computer and / or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may, for example, communicate through local and / or remote processes according to signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system and / or a network, such as the Internet interacting with other systems through signals).

[0093] Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0094] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0095] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, 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 through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0096] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0097] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0098] In the above embodiments, the functions of each functional unit can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. Available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVDs), or semiconductor media (e.g., solid state disks (SSDs)).

[0099] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0100] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0101] In summary, the present application provides a charging efficiency calculation device, method, terminal and medium based on a charging pile and a BMS. During the charging process of the vehicle, the data acquisition module collects the charging pile input electrical signal data at the input end of the charging pile to be tested and the charging pile output electrical signal data at the output end in real time, and the battery management system interface module obtains the battery BMS data from the battery management system of the vehicle in real time; the data processing and calculation module uses the power integration algorithm to calculate the real-time charging efficiency of the charging pile to be tested based on the data collected by the data acquisition module and the battery management system interface module. The present application realizes the real-time calculation of the charging efficiency by adopting an architecture for collaborative monitoring of the charging pile and the battery management system, and fully considers the loss during the charging process to improve the accuracy of the efficiency calculation; the present application can adapt to different types of charging piles and electric vehicles, and has good versatility and expansibility. Therefore, the present application effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0102] The above embodiments are merely illustrative of the principles and effects of the present application and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed in the present application shall still be covered by the claims of the present application.

Claims

1. A charging efficiency calculation device based on a charging pile and a BMS, characterized in that: Connecting a vehicle charging system, the vehicle charging system includes: a charging pile to be tested and a vehicle charged by the charging pile to be tested, and the device includes: Data acquisition module, battery management system interface module and data processing and calculation module; Wherein, the data acquisition module is arranged at the charging pile to be tested; the battery management system interface module is connected to the battery management system of the vehicle charged by the charging pile to be tested; the data processing and calculation module is connected to the data acquisition module and the battery management system interface module respectively; During the charging process of the vehicle, the data acquisition module collects the charging pile input electrical signal data of the input end of the charging pile to be tested and the charging pile output electrical signal data of the output end of the charging pile to be tested in real time, and the battery management system interface module obtains the battery BMS data from the battery management system of the vehicle in real time; Wherein, the data acquisition module includes: an input end current sensor and an input end voltage sensor arranged at the input end of the charging pile to be tested; And wherein, the input end current sensor is used to collect input current data of the input end of the charging pile to be tested in real time during the vehicle charging process; the input end voltage sensor is used to collect input voltage data of the input end of the charging pile to be tested in real time during the vehicle charging process; the input current data of the input end of the charging pile to be tested and the input voltage data of the input end of the charging pile to be tested constitute the charging pile input electrical signal data of the input end of the charging pile to be tested; The data acquisition module further includes: an output end current sensor and an output end voltage sensor arranged at the output end of the charging pile to be tested; And wherein, the output end current sensor is used to collect the output current data of the output end of the charging pile to be tested in real time during the vehicle charging process; the output end voltage sensor is used to collect the output voltage data of the output end of the charging pile to be tested in real time during the vehicle charging process; the output current data of the output end of the charging pile to be tested and the output voltage data of the output end of the charging pile to be tested constitute the charging pile output electrical signal data of the output end of the charging pile to be tested; The battery BMS data includes: input current data and input voltage data of the vehicle battery; The data processing and calculation module uses a power integration algorithm to calculate the real-time charging efficiency of the charging pile to be tested according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data; Wherein, the data processing and calculation module includes: The power calculation unit is used to calculate the input power of the charging pile, the output power of the charging pile and the charged power of the battery according to the input current data of the input end of the charging pile to be tested, the input voltage data of the input end of the charging pile to be tested, the output current data of the output end of the charging pile to be tested, the output voltage data of the output end of the charging pile to be tested, the input current data of the vehicle battery and the output current data of the vehicle battery by using a power integration algorithm; A charging efficiency calculation unit, used to calculate the real-time charging efficiency of the charging pile to be tested according to the input power of the charging pile, the output power of the charging pile and the charged power of the battery; The power integration algorithm includes: a charging pile input power integration algorithm, a charging pile output power integration algorithm and a battery charging power integration algorithm; And wherein, according to the input current data and input voltage data of the input end of the charging pile to be tested, the charging pile input power integration algorithm is used to calculate the charging pile input power; According to the output current data and output voltage data of the output end of the charging pile to be tested, the output power of the charging pile is calculated by using the charging pile output power integration algorithm; Calculate the battery charge amount according to the input current data and input voltage data of the vehicle battery by using the battery charge amount integration algorithm; The charging efficiency calculation unit comprises: A first charging efficiency calculation subunit is used to calculate a first charging efficiency according to the charging pile input power and the charging pile output power; and calculate a second charging efficiency according to the battery charge power and the charging pile output power; The second charging efficiency calculation subunit is used to multiply the first charging efficiency by the second charging efficiency to obtain the real-time charging efficiency of the charging pile to be tested.

2. A charging efficiency calculation method based on a charging pile and a BMS, characterized in that: Applied to a vehicle charging system, the vehicle charging system comprises: a charging pile to be tested and a vehicle charged by the charging pile to be tested, the method comprises: During the vehicle charging process, the charging pile input electrical signal data of the input end of the charging pile to be tested and the charging pile output electrical signal data of the output end of the charging pile to be tested are collected in real time, and the battery BMS data is obtained in real time from the battery management system of the vehicle; wherein the charging pile input electrical signal data includes: input current data of the input end of the charging pile to be tested and input voltage data of the input end of the charging pile to be tested; the charging pile output electrical signal data includes: output current data of the output end of the charging pile to be tested and output voltage data of the output end of the charging pile to be tested; the battery BMS data includes: input current data and input voltage data of the vehicle battery; Using a power integration algorithm, the real-time charging efficiency of the charging pile to be tested is calculated according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data; Wherein, the real-time charging efficiency of the charging pile to be tested is calculated according to the charging pile input electrical signal data, the charging pile output electrical signal data and the battery BMS data by using a power integration algorithm, including: using a power integration algorithm, according to the input current data of the input end of the charging pile to be tested, the input voltage data of the input end of the charging pile to be tested, the output current data of the output end of the charging pile to be tested, the output voltage data of the output end of the charging pile to be tested, the input current data of the vehicle battery and the output current data of the vehicle battery, the charging pile input power, the charging pile output power and the battery charge power; according to the charging pile input power, the charging pile output power and the battery charge power, the real-time charging efficiency of the charging pile to be tested is calculated; The power integration algorithm includes: a charging pile input power integration algorithm, a charging pile output power integration algorithm and a battery charging power integration algorithm; According to the input current data and input voltage data of the input end of the charging pile to be tested, the input power of the charging pile is calculated using the charging pile input power integration algorithm; According to the output current data and output voltage data of the output end of the charging pile to be tested, the output power of the charging pile is calculated using the charging pile output power integration algorithm; According to the input current data and input voltage data of the vehicle battery, the battery charging power integration algorithm is used to calculate the battery charging power; The specific process of calculating the real-time charging efficiency of the charging pile to be tested based on the charging pile input power, the charging pile output power and the battery charged power includes: calculating the first charging efficiency based on the charging pile input power and the charging pile output power; calculating the second charging efficiency based on the battery charged power and the charging pile output power; multiplying the first charging efficiency by the second charging efficiency to obtain the real-time charging efficiency of the charging pile to be tested.

3. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to claim 2 is implemented.

4. An electronic terminal comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the method of claim 2.

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