Charging method based on micro motor vehicle battery changing cabinet

Abstract

The invention discloses a charging method based on a miniature motor vehicle battery changing cabinet. A system control module, a data acquisition module, a human-computer interface, a charging module, a charging power line and a battery are included. The charging method comprises the following steps: step 1, reading battery information in a cabinet through CAN communication of a data acquisition module, and capturing key information of a battery; 2, judging the communication state of the battery; step 3, judging the number of batteries in the battery changing cabinet, and determining whether to start the alternate charging strategy or not according to the number of the batteries; and step 4, the data acquisition module acquires battery data in real time, uploads key information of the battery through interaction with the system control module, and switches from a charging state to a battery replaceable state. By optimizing integration, a mode that a single charging module is used by a single grid of a traditional battery replacement cabinet is avoided, and the charging module capable of realizing multi-channel alternate charging and real-time dynamic power distribution is designed in an integrated manner, so that the battery replacement cabinet can operate efficiently, and the charging and battery replacement time is saved.

Description

Technical Field

[0001] The present invention relates to the application field of charging and battery replacement technology for mini motor vehicles, and in particular to a charging method based on a battery replacement cabinet for mini motor vehicles. Background Art

[0002] From the perspective of smart logistics, battery swap cabinets, as a type of intelligent logistics equipment, mainly serve micro-motor vehicles and have functions such as self-service battery swapping, fast charging, and positioning navigation, which can greatly improve the efficiency of the logistics industry. For example, employees in industries such as logistics, express delivery, takeout, and postal services will use special intelligent battery swap cabinets to replace the batteries of electric vehicles, thereby saving charging time and improving work efficiency.

[0003] Currently, the logistics and distribution field mainly relies on two-wheeled vehicles and three-wheeled vehicles for distribution. The battery swap cabinets on the market currently mainly serve two-wheeled electric vehicles. The charging method of the battery swap cabinet grid is basically a single grid corresponds to one charging module. On the one hand, the output power of the charging module is fixed, the charging speed is slow, and the efficiency of use is low. The use of a single charging module for each grid makes the hardware cost of the cabinet extremely high. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a charging method based on a micro-motor vehicle battery exchange cabinet. Through optimized integration, the method of using a single charging module in a single grid of a traditional battery exchange cabinet is avoided, and a charging module with multi-channel rotation charging and real-time dynamic power distribution is integrated, so that the battery exchange cabinet can operate efficiently and save charging and battery replacement time.

[0005] The technical solution of the present invention is: a charging method based on a micro-motor vehicle battery exchange cabinet, comprising a system control module, a data acquisition module, a human-machine interface, a charging module, a charging power line and a battery, wherein the data acquisition module is connected to the human-machine interface via a ModbusTCP communication mode, the system control module is connected to the charging module via a CAN communication mode, the system control module is connected to the data acquisition module via an RS485 communication mode, the battery and the data acquisition module collect information via CAN communication, and the battery and the charging module are connected via a charging power line;

[0006] The charging method comprises the following steps:

[0007] Step 1: Read the battery information in the cabinet through the CAN communication of the data acquisition module to capture the key information of the battery;

[0008] Step 2: Determine the battery communication status;

[0009] Step 3: Determine the number of batteries in the battery swap cabinet and determine whether to start the rotation charging strategy based on the number of batteries;

[0010] Step 4: The data acquisition module collects battery data in real time, uploads key information of the battery through interaction with the system control module, and switches from the charging state to the replaceable state.

[0011] Furthermore, in step 1, the key information of the battery includes the current battery power, the current battery SOH, the current battery temperature, the battery charging current, the battery charging voltage and the battery charging completion capacity.

[0012] Furthermore, in step 2, when communication fails, the failure is recorded, and the fault information is uploaded to the cloud through information interaction with the system control module;

[0013] When the communication is normal, go directly to step 3.

[0014] Further, in step 3, the number of batteries is confirmed by communicating with the battery through the data acquisition module;

[0015] When the number of batteries is less than or equal to 4, dynamic charging power allocation is performed based on the real-time monitored battery capacity. Batteries with higher power are charged with high power, and batteries with lower power are charged with low power.

[0016] When the number of batteries is greater than 4, the round-robin charging strategy is determined.

[0017] Furthermore, when the number of batteries is greater than 4 and less than 7, dynamic charging power allocation is performed according to the real-time monitored battery capacity, with higher-capacity batteries allocated with high power for charging and lower-capacity batteries allocated with low power for charging;

[0018] When the number of batteries is greater than or equal to 7, the rotation charging strategy is started, and the charging power is dynamically allocated according to the higher-capacity batteries monitored in real time. The batteries with low power are queued for charging and wait for rotation charging.

[0019] Furthermore, after the dynamic charging power distribution is completed, a charging judgment is performed to determine whether the battery is charged normally based on whether there is current.

[0020] Further, the charging result is judged by whether the battery receives the charging current, and whether the battery reaches the set battery capacity. If the battery does not reach the set battery capacity, the battery continues to be charged;

[0021] When the set battery capacity is reached, the battery is charged, the charging power stops being output, the battery information is updated to a fully charged battery, and the battery swap cabinet can perform battery swap operations normally.

[0022] The beneficial technical effects of the present invention are:

[0023] The battery information in the battery swap cabinet is collected through the warehouse control board; the collected data information is analyzed to determine whether the battery swap cabinet needs to implement a rotation charging strategy; the battery power is compared, and the charging channel power dynamic allocation technology is executed; the charging judgment is made through information analysis to determine whether the battery is charged normally; the charging result is judged when the battery is charged in real time to check whether the battery capacity is full and whether the charging is completed; when the rotation charging strategy is executed, the batteries waiting in line for rotation charging will start the charging process after any battery capacity is charged.

[0024] By optimizing the integration, we avoid the traditional method of using a single charging module in a single slot of the battery swap cabinet, and integrate the design of a charging module that can charge in multiple channels and perform real-time dynamic power allocation, so that the battery swap cabinet can operate efficiently and save charging and swapping time.

[0025] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the electrical control framework of the present invention;

[0027] Figure 2 It is a schematic diagram of the charging process of the present invention. DETAILED DESCRIPTION

[0028] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0030] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships described in the embodiments and shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] like Figure 1 and Figure 2 As shown, the present invention specifically relates to a charging method based on a micro-motor vehicle battery exchange cabinet, including a system control module, a data acquisition module, a human-machine interface, a charging module, a charging power line and a battery, wherein the data acquisition module is connected to the human-machine interface via ModbusTCP communication, the system control module is connected to the charging module via CAN communication, the system control module is connected to the data acquisition module via RS485 communication, the battery and the data acquisition module use CAN communication to collect information, and the battery and the charging module are connected via a charging power line;

[0032] The charging method comprises the following steps:

[0033] Step 1: Read the battery information in the cabinet through the CAN communication of the data acquisition module to capture the key information of the battery.

[0034] Furthermore, in step 1, the key information of the battery includes the current battery power, the current battery SOH, the current battery temperature, the battery charging current, the battery charging voltage and the battery charging completion capacity.

[0035] Step 2: Determine the battery communication status.

[0036] Furthermore, in step 2, when communication fails, the failure is recorded, and the fault information is uploaded to the cloud through information interaction with the system control module;

[0037] When the communication is normal, go directly to step 3.

[0038] Step 3: Determine the number of batteries in the battery swap cabinet and decide whether to start the rotation charging strategy based on the number of batteries.

[0039] Further, in step 3, the number of batteries is confirmed by communicating with the battery through the data acquisition module;

[0040] When the number of batteries is less than or equal to 4, dynamic charging power allocation is performed based on the real-time monitored battery capacity. Batteries with higher power are charged with high power, and batteries with lower power are charged with low power.

[0041] When the number of batteries is greater than 4, the round-robin charging strategy is determined.

[0042] Furthermore, when the number of batteries is greater than 4 and less than 7, dynamic charging power allocation is performed according to the real-time monitored battery capacity, with higher-capacity batteries allocated with high power for charging and lower-capacity batteries allocated with low power for charging;

[0043] When the number of batteries is greater than or equal to 7, the rotation charging strategy is started, and the charging power is dynamically allocated according to the higher-capacity batteries monitored in real time. The batteries with low power are queued for charging and wait for rotation charging.

[0044] Furthermore, after the dynamic charging power distribution is completed, a charging judgment is performed to determine whether the battery is charged normally based on whether there is current.

[0045] Further, the charging result is judged by whether the battery receives the charging current, and whether the battery reaches the set battery capacity. If the battery does not reach the set battery capacity, the battery continues to be charged;

[0046] When the set battery capacity is reached, the battery is charged, the charging power stops being output, the battery information is updated to a fully charged battery, and the battery swap cabinet can perform battery swap operations normally.

[0047] First, place the battery in the cabinet. The cabinet collects and uploads the battery data information through the data acquisition module, and then determines whether there are batteries in the slots using the 1-to-N charging module, whether the battery communication is normal, and whether the battery can be charged. Then, the charging order of the batteries is determined through the rotation charging strategy, and the batteries are charged through dynamic power allocation.

[0048] When there are eight batteries in the battery swap cabinet, the existing power of the eight batteries is compared and the batteries are prioritized for rotation charging. Two low-power batteries are queued for charging, and six high-power batteries are prioritized for dynamic power allocation charging. When the power of any one or two of the six batteries currently being charged reaches the set capacity, the charging channel that has completed charging is switched to charge and fully charge the low-power batteries in the rotation charging queue.

[0049] When there are only four batteries in the battery swap cabinet grid, the power is dynamically allocated to the idle charging channels according to the existing capacity of the batteries, and the grid battery capacity is directly charged to the set capacity.

[0050] A method proposed to improve the utilization efficiency of the battery swap cabinet and the charging module; that is, a method in which an N-way charging module charges a battery that is larger than its own charging channel, which can enhance the power utilization of the charging module. The implementation process includes a battery communication judgment stage, a battery power comparison stage, a threshold reaching switching stage, etc.

[0051] During the battery communication judgment stage, the data acquisition module communicates with the battery through the charging harness to determine whether there is a battery in the battery swap cabinet compartment. When it is identified that the number of batteries in the compartment is less than four, there is no need to make a rotation charging strategy judgment, and power is directly allocated to the batteries in the compartment for charging.

[0052] The charging method of the battery swap cabinet uses the power dynamic allocation technology to charge the battery faster, making the use of the battery swap cabinet more efficient; on the other hand, the output channel of the N-port charging module is used to rotate and charge N+N grids, which greatly improves the utilization rate of the charging module; it meets the customer's usage requirements and greatly saves hardware costs.

[0053] Step 4: The data acquisition module collects battery data in real time, uploads key information of the battery through interaction with the system control module, and switches from the charging state to the replaceable state.

[0054] The above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention.

Claims

1. A charging method based on a micro-motor vehicle battery exchange cabinet, characterized in that: It includes a system control module, a data acquisition module, a human-machine interface, a charging module, a charging power line and a battery. The data acquisition module is connected to the human-machine interface via ModbusTCP communication, the system control module is connected to the charging module via CAN communication, the system control module is connected to the data acquisition module via RS485 communication, the battery and the data acquisition module use CAN communication to collect information, and the battery and the charging module are connected via a charging power line; The charging method comprises the following steps: Step 1: Read the battery information in the cabinet through the CAN communication of the data acquisition module to capture the key information of the battery; Step 2: Determine the battery communication status; Step 3: Determine the number of batteries in the battery swap cabinet and determine whether to start the rotation charging strategy based on the number of batteries; Step 4: The data acquisition module collects battery data in real time, uploads key information of the battery through interaction with the system control module, and switches from the charging state to the replaceable state.

2. The charging method based on the micro-motor vehicle battery exchange cabinet according to claim 1 is characterized in that: In step 1, the key information of the battery includes the current battery power, the current battery SOH, the current battery temperature, the battery charging current, the battery charging voltage and the battery charging completion capacity.

3. The charging method based on the micro-motor vehicle battery exchange cabinet according to claim 1 is characterized in that: In step 2, when communication fails, the failure is recorded, and the fault information is uploaded to the cloud through information interaction with the system control module; When the communication is normal, go directly to step 3.

4. The charging method based on the micro-motor vehicle battery exchange cabinet according to claim 1 is characterized in that: In step 3, the number of batteries is confirmed by communicating with the battery through the data acquisition module; When the number of batteries is less than or equal to 4, dynamic charging power allocation is performed based on the real-time monitored battery capacity. Batteries with higher power are charged with high power, and batteries with lower power are charged with low power. When the number of batteries is greater than 4, the round-robin charging strategy is determined.

5. The charging method based on the micro-motor vehicle battery exchange cabinet according to claim 4 is characterized in that: When the number of batteries is greater than 4 and less than 7, dynamic charging power allocation is performed based on the real-time monitored battery capacity. Batteries with higher power are charged with high power, and batteries with lower power are charged with low power. When the number of batteries is greater than or equal to 7, the rotation charging strategy is started, and the charging power is dynamically allocated according to the higher-capacity batteries monitored in real time. The batteries with low power are queued for charging and wait for rotation charging.

6. The charging method based on the micro-motor vehicle battery exchange cabinet according to claim 5 is characterized in that: After the dynamic charging power distribution is completed, a charging judgment is made to determine whether the battery is charging normally based on whether there is current.

7. The charging method based on the micro-motor vehicle battery exchange cabinet according to claim 6 is characterized in that: The charging result is judged by whether the battery receives the charging current, and whether the battery reaches the set battery capacity. If the battery does not reach the set battery capacity, the battery continues to be charged; When the set battery capacity is reached, the battery is charged, the charging power stops being output, the battery information is updated to a fully charged battery, and the battery swap cabinet can perform battery swap operations normally.

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