Retired battery multi-channel signal acquisition method, device and equipment and storage medium

Abstract

The invention relates to the technical field of reutilization of decommissioned batteries, in particular to a decommissioned battery multi-channel signal acquisition method, device and equipment and a storage medium, which can be applied to various combined decommissioned battery packs with different types and the same capacity through multi-channel signal acquisition of each module and each single cell in a battery pack. The flexibility of an acquisition mode is improved, the applicability of the system is improved, meanwhile, the acquisition method realizes independent control and operation of components of each layer of the retired battery pack, the fault tolerance rate of the system is increased, resources are reused, the balance of supply and demand of battery metal material resources is solved, the cost is greatly saved, and the method is suitable for popularization and application. The increasingly strict environmental protection requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of retired battery recycling, and in particular to a retired battery multi-channel signal acquisition method, device, equipment and storage medium. Background Art

[0002] At present, the imbalance between supply and demand of battery metal material resources is gradually emerging.

[0003] The performance of electric vehicle power batteries will decay as the number of charging times increases. When the battery capacity decays to less than 80% of the rated capacity, the power battery is not suitable for use in electric vehicles, which means that its service life in electric vehicles ends. If the battery is directly eliminated, it will inevitably cause a serious waste of resources and cause environmental pollution.

[0004] The national standard GB / T34013-2017 "Specifications and Dimensions of Power Batteries for Electric Vehicles" clearly stipulates the size and specification requirements of single cells, modules and standard boxes of power batteries for electric vehicles. This standard can effectively solve the problem that power batteries are difficult to match with the structure of energy storage power stations or household energy storage equipment due to their different sizes in the cascade utilization of power batteries, and also lowers the threshold for the cascade recycling of power batteries. The national standard GB / T34014-2017 "Coding Rules for Automotive Power Batteries" stipulates the basic principles, coding objects, code structure and data carriers of power battery coding. The release of this standard can more accurately determine the responsible entity for power battery recycling in power battery production management, maintenance and traceability, electric vehicle key parameter monitoring, especially in the power battery recycling link, with traceability and uniqueness. National standard GB / T34015-2017 "Residual Energy Detection for Automotive Power Battery Recycling". It standardizes the inspection processes of power battery appearance inspection, polarity detection, voltage determination, charge and discharge current determination, and residual energy testing, providing an evaluation basis for residual energy detection of automotive power batteries, and helping to improve the safety and scientificity of residual energy detection of waste power batteries.

[0005] With the increase in the number of new energy vehicles, the recycling and reuse of power lithium batteries is an issue that must be faced. Summary of the invention

[0006] The technical problem to be solved by the present invention is: in order to solve the technical problems in the prior art, the present invention provides a method, device, equipment and storage medium for multi-channel signal acquisition of retired batteries.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a multi-channel signal acquisition method for retired batteries, comprising the following steps: S1, identifying the composition of retired battery packs: according to the feedback of the signal flowing through the voltage acquisition point, the components of each level of the battery pack are split and processed to determine the number of modules in the battery pack and the number of single cells in the battery module; S2, performing serial number address coding: according to the split statistics of the components of each level of the battery pack, the battery module is firstly serially coded, and the single cells in the single battery module are address coded again, and the head flag code and the tail flag code are inserted into the first address code and the end address code to be collected; S3, determining the voltage acquisition scanning cycle and acquisition mode: presetting the total cycle time, and calculating the sampling cycle time of a single address according to the total coded address value, and setting the voltage It is a cyclic acquisition mode; S4, set the temperature acquisition range: set the working temperature range of the retired battery pack; S5, determine the temperature acquisition refresh frequency and acquisition mode: according to the voltage acquisition scanning cycle, set the temperature acquisition refresh frequency, and set the temperature to real-time acquisition mode; S6, set the current acquisition parameters: set the working current sampling range, and set the current to real-time acquisition mode; S7, signal acquisition processing: classify and analyze the collected real-time voltage, current, and temperature signals, assign the analyzed voltage, temperature, and current signals to the serial number and coding address, and update the assignment in real time; S8, forward the acquisition information, find the head flag and the tail flag, merge the data information in the address order and forward it to the execution unit through the interface; S9, repeat steps S7 and S8 until the charging or discharging of the retired battery pack is completed.

[0008] Furthermore, in step S3, a voltage acquisition method is adopted, and acquisition is performed in a round-trip cycle from the head to the tail and then from the tail to the head according to the head flag bit and the tail flag bit of the address code.

[0009] Further, in step S4, temperature collection includes collecting ambient temperature and collecting single cell casing temperature.

[0010] Furthermore, in step S9, during the charging process of the retired battery pack, when the voltage exceeds the set cut-off voltage, the battery is deemed to be fully charged and the charging is terminated; during the discharging process, when the voltage drops to the minimum operating voltage level, the discharging is no longer continued, which is called discharge termination.

[0011] Furthermore, in step S9, a protection range of the signal threshold is internally set, and if the collected digital signal exceeds the upper threshold or is lower than the lower threshold, active power off is implemented.

[0012] Furthermore, in step S7, a data processing instruction is received, and the collected signals are isolated during the data transmission process, and the signals are analog-digitalized.

[0013] A multi-channel signal acquisition device for retired batteries is used to implement the above-mentioned multi-channel signal acquisition method for retired batteries, including an acquisition module: used for acquiring voltage, temperature and current signals; an isolation module: used for individually isolating signals to ensure unidirectional transmission of signals and suppress high and low frequency interference; a conversion module: used for digitally converting analog signals; an identification and processing module: used for identifying modules at each level of a battery pack, and performing serial number address encoding, receiving digitized signals from the conversion module, identifying and processing the digitized signals, classifying and parsing the signals, assigning the parsed voltage, temperature and current signals to the serial number and coding address, and updating the assignments in real time; a forwarding module: searching for the head flag bit and the tail flag bit, merging the overall data information in address order, and forwarding it to an external actuator through an interface.

[0014] Furthermore, it also includes a protection module: setting a protection range of the signal threshold, and implementing active protection for the device if the collected digital signal exceeds the upper threshold or is lower than the lower threshold.

[0015] A retired battery multi-channel signal acquisition device comprises a processor and a memory. When the processor executes program data stored in the memory, the retired battery multi-channel signal acquisition method is implemented.

[0016] A readable storage medium is used to store program data, and when the program data is executed by a processor, the above-mentioned retired battery multi-channel signal acquisition method is implemented.

[0017] The beneficial effects of the present invention are as follows: the present invention can be applied to various types of combined retired battery packs with the same capacity through multi-channel signal collection for each module and each single cell in the battery pack, thereby improving the flexibility of the collection method and the applicability of the system. At the same time, the collection method can realize independent control and calculation of each level component of the retired battery pack, increase the system fault tolerance, reuse resources, solve the supply and demand balance of battery metal material resources, greatly save costs, and meet increasingly stringent environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a flow chart of the multi-channel signal acquisition method of retired batteries in the present invention.

[0020] Figure 2 It is a schematic diagram of the principle of the multi-channel signal acquisition method for retired batteries in the present invention.

[0021] Figure 3 It is a schematic diagram of a multi-channel signal acquisition device for retired batteries in the present invention. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The invention discloses a method, a device, a equipment and a storage medium for collecting multi-channel signals of retired batteries.

[0025] Reference Figure 1 and Figure 2 , a method for collecting multi-channel signals of retired batteries, comprising the following steps:

[0026] S1. Identify the composition of retired battery packs: Based on the feedback from the signal flowing through the voltage collection point, split the components of the battery pack at each level, determine the number of modules in the battery pack, and determine the number of single cells in the battery module.

[0027] S2. Serial number address coding: According to the split statistics of the components of each level of the battery pack, the battery module is first serially coded, and then the single cells in a single battery module are address coded, and the head flag code and the tail flag code are inserted into the first address code and the end address code to be collected.

[0028] S3. Determine the voltage acquisition scanning cycle and acquisition mode: preset the total cycle time, calculate the sampling cycle time of a single address according to the total encoding address value, and set the voltage to a cyclic acquisition mode. When the voltage acquisition mode is adopted, the voltage is scanned and collected from the head to the tail and then from the tail to the head in a round-trip cycle according to the head flag and tail flag of the address code.

[0029] S4. Set the temperature collection range: Set the operating temperature range of the retired battery pack. Temperature collection includes collecting the ambient temperature and collecting the temperature of the single cell shell.

[0030] S5. Determine the temperature acquisition refresh frequency and acquisition mode: according to the voltage acquisition scanning cycle, set the temperature acquisition refresh frequency and set the temperature to real-time acquisition mode;

[0031] S6. Set current acquisition parameters: set the working current sampling range and set the current to real-time acquisition mode;

[0032] S7, signal acquisition and processing: classify and analyze the collected real-time voltage, current, and temperature signals, assign the analyzed voltage, temperature, and current signals to the serial number and coding address, and update the assignment in real time. Receive data processing instructions, collect signals, and isolate each signal during data transmission, and perform signal analog digitization.

[0033] S8, forwarding the collected information, searching for the head flag and the tail flag, merging the data information in address order and forwarding it to the execution unit through the interface;

[0034] S9, repeat steps S7 and S8 until the retired battery pack is charged or discharged. During the charging process, when the voltage of the retired battery pack exceeds the set cut-off voltage, the battery is deemed to be fully charged and the charging is terminated; during the discharging process, when the voltage drops to the minimum operating voltage level, the discharge is no longer continued, which is called the discharge termination. The protection range of the signal threshold is set internally. If the collected digital signal exceeds the upper threshold or is lower than the lower threshold, the power is actively cut off.

[0035] A multi-channel signal acquisition device for retired batteries, used to implement the above-mentioned multi-channel signal acquisition method for retired batteries, referring to Figure 3, including an acquisition module, an isolation module, a conversion module, an identification and processing module, a forwarding module and a protection module. The acquisition module is used for collecting voltage, temperature and current signals; the isolation module is used to isolate the signals separately to ensure the one-way transmission of the signals and suppress the interference of high and low frequencies; the conversion module is used to digitally convert analog signals; the identification and processing module is used to identify the modules at each level of the battery pack and encode the serial address, receive the digital signal of the conversion module, identify and process the digital signal, classify and parse the signal, assign the analyzed voltage, temperature and current signals to the serial number and coding address, and update the assignment in real time; the forwarding module is used to find the head flag bit and the tail flag bit, merge the overall data information in the address order and forward it to the external actuator through the interface; the protection module is used to set the protection range of the signal threshold, and actively protect the device according to the collected digital signal if it exceeds the upper limit of the threshold or is lower than the lower limit of the threshold.

[0036] A retired battery multi-channel signal acquisition device comprises a processor and a memory. When the processor executes program data stored in the memory, the retired battery multi-channel signal acquisition method is implemented.

[0037] A readable storage medium is used to store program data, and when the program data is executed by a processor, the above-mentioned retired battery multi-channel signal acquisition method is implemented.

[0038] Working principle: The present invention can be applied to various types of combined retired battery packs with the same capacity through multi-channel signal collection for each module and each single cell in the battery pack, thereby achieving flexibility in the collection method and improving the applicability of the system. At the same time, the collection method can realize independent control and calculation of each level component of the retired battery pack, increase the system fault tolerance, reuse resources, and solve the supply and demand balance of battery metal material resources.

[0039] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A method for collecting multi-channel signals of retired batteries, characterized in that: The following steps are involved: S1. Identify the composition of retired battery packs: According to the feedback from the signal flowing through the voltage collection point, separate the components of the battery pack at each level, determine the number of modules in the battery pack, and determine the number of single cells in the battery module; S2. Serial number address coding: According to the split statistics of the components of each level of the battery pack, the battery module is first serially coded, and then the single cells in a single battery module are address coded, and the head flag code and the tail flag code are inserted into the first address code and the end address code to be collected; S3. Determine the voltage acquisition scanning cycle and acquisition mode: preset the total cycle time, calculate the sampling cycle time of a single address according to the total encoding address value, and set the voltage to a cyclic acquisition mode; S4. Set the temperature collection range: set the operating temperature range of the retired battery pack; S5. Determine the temperature acquisition refresh frequency and acquisition mode: according to the voltage acquisition scanning cycle, set the temperature acquisition refresh frequency and set the temperature to real-time acquisition mode; S6. Set current acquisition parameters: set the working current sampling range and set the current to real-time acquisition mode; S7, signal acquisition and processing: classify and analyze the collected real-time voltage, current, and temperature signals, assign the analyzed voltage, temperature, and current signals to serial numbers and coding addresses, and update the assigned values ​​in real time; S8, forwarding the collected information, searching for the head flag bit and the tail flag bit, merging the data information in address order and forwarding it to the execution unit through the interface; S9. Repeat steps S7 and S8 until the retired battery pack is fully charged or fully discharged.

2. The method for collecting multi-channel signals of retired batteries according to claim 1, characterized in that: In step S3, a voltage acquisition method is adopted, and acquisition is performed by a round-trip scanning cycle from the head to the tail and then from the tail to the head according to the head flag bit and the tail flag bit of the address code.

3. The method for collecting multi-channel signals of retired batteries according to claim 1, characterized in that: In step S4, temperature collection includes collecting the ambient temperature and collecting the temperature of the outer shell of the single battery cell.

4. The method for collecting multi-channel signals of retired batteries according to claim 3, characterized in that: In step S9, during the charging process, when the voltage of the retired battery pack exceeds the set cut-off voltage, the battery is deemed to be fully charged and the charging is terminated; during the discharging process, when the voltage drops to the minimum operating voltage level, the discharge is no longer continued, which is called discharge termination.

5. The method for collecting multi-channel signals of retired batteries according to claim 3, characterized in that: In step S9, a protection range of the signal threshold is internally set, and if the collected digital signal exceeds the upper threshold or is lower than the lower threshold, active power off is implemented.

6. The retired battery multi-channel signal acquisition method according to claim 5, characterized in that: In step S7, a data processing instruction is received, and signals are collected. During the data transmission process, each signal is isolated and analog-digitalized.

7. A multi-channel signal acquisition device for retired batteries, used to implement the multi-channel signal acquisition method for retired batteries according to any one of claims 1 to 6, characterized in that: include Acquisition module: used for collecting voltage, temperature and current signals; Isolation module: used to isolate the signal separately, ensure the one-way transmission of the signal, and suppress the interference of high and low frequencies; Conversion module: used to convert analog signals into digital signals; Identification and processing module: used to identify modules at each level of the battery pack, encode serial number addresses, receive digital signals from the conversion module, identify and process the digital signals, classify and analyze the signals, assign the analyzed voltage, temperature, and current signals to the serial number and coding address, and update the assignments in real time; Forwarding module: Find the header flag and tail flag, merge the overall data information in address order, and forward it to the external actuator through the interface.

8. The multi-channel signal acquisition device for retired batteries according to claim 7, characterized in that: It also includes a protection module: setting a protection range of the signal threshold, and implementing active protection for the device if the collected digital signal exceeds the upper threshold or is lower than the lower threshold.

9. A multi-channel signal acquisition device for retired batteries, characterized in that: The method comprises a processor and a memory, wherein the processor executes program data stored in the memory to implement the multi-channel signal acquisition method for retired batteries according to any one of claims 1 to 6.

10. A readable storage medium for storing program data, characterized in that: When the program data is executed by a processor, the retired battery multi-channel signal acquisition method according to any one of claims 1 to 6 is implemented.

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