Battery pack low-consumption management method and system based on real-time performance index monitoring while drilling

Abstract

The application provides a low-consumption management method and system for a battery pack while drilling based on real-time performance index monitoring, which comprises a battery pack module composed of multiple single batteries arranged according to a redundancy principle; and a low-power intelligent management device connected with the battery pack module and a working port of a drilling instrument, used for realizing performance index monitoring of the battery pack module based on different operation modes of the device, and automatically controlling the operation state of each single battery in the battery pack based on a set strategy and an output vector of the drilling instrument port. By using the system, different operation modes are designed to control the power consumption of the whole operation at the lowest level, real-time performance index data of the battery can be effectively collected, the probability of invalid operation caused by battery performance problems is reduced, the balanced discharge control of the battery pack of the drilling instrument is effectively realized, the service life of the single battery and the recycling rate of the battery pack are improved, and the use time of the battery pack in the well is prolonged.

Description

Technical Field

[0001] This invention relates to the field of measurement-while-drilling instrument management technology, and in particular to a low-consumption management method and system for measurement-while-drilling battery packs based on real-time performance index monitoring. Background Technology

[0002] Measurement while drilling (MWD) and logging while drilling (LWD) operations can provide various geological and directional parameters of the logging area, facilitating decision-making for wellbore trajectory adjustments and effectively improving the drilling success rate during drilling. Due to environmental factors, MWD instruments are mostly battery-powered during well operations. Once the battery is depleted, the instrument is pulled out of the well to replace the battery before running back in to continue operations. Therefore, the real-time available battery power directly restricts the drilling speed, operation time, and the operating costs of the instrument and related equipment.

[0003] Because the rated voltage of a single battery is too low to provide the voltage required for downhole instruments to operate, drilling instruments in practical applications often use series-connected battery packs for power. However, the low recycling rate of existing battery packs and the lack of intelligent management during use lead to increased battery consumption, resulting in high operating costs for drilling instruments.

[0004] In the existing operating mechanism of drilling instruments, when drilling instruments are used in the field, they mostly rely on past application experience to judge the battery pack usage. There is a general lack of calculation and management of various performance indicators such as the remaining battery charge, the time used, and the estimation of the remaining usage time. In addition, the relationship between the remaining battery charge and the measured voltage across the battery pack is non-linear, making it substantially difficult to objectively assess the remaining battery charge. The lack of management and analysis functions for the performance indicators of the battery packs used by drilling instruments increases the non-drilling operation time caused by replacing batteries. Furthermore, the output voltage of the battery pack is constant for different operating modes of the instrument. The adjustment or conversion circuit of the instrument further converts or consumes the output voltage to meet the voltage requirements of different operating modes, which is not conducive to the optimized development of drilling instrument battery packs.

[0005] The information disclosed in the background section of this invention is intended only to enhance the understanding of the general background of this invention, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] To address the above problems, this invention provides a low-power management system for drilling battery packs based on real-time performance indicator monitoring. In one embodiment, the system includes:

[0007] The battery module consists of multiple individual batteries connected in series according to the principle of redundancy, and is used to power the operation of the low-power intelligent management device and the drilling instrument.

[0008] The low-power intelligent management device is connected to the working ports of the battery pack module and the drilling instrument. It is configured to monitor the performance indicators of the battery pack module based on its different operating modes, and automatically control the operation of each individual battery in the battery pack according to the set strategy based on the output vector of the drilling instrument port to match the different operating modes of the drilling instrument.

[0009] Preferably, in one embodiment, the low-power intelligent management device includes: a connection port, an intelligent control unit, an internal voltage conversion circuit, and a storage unit;

[0010] The connection port includes an input port and an output port;

[0011] The intelligent control unit is connected between the input port and the output port, and is configured to be powered by the battery pack, acquire the performance index data of the battery pack in real time, and control the operating status of each individual battery relative to the battery pack module.

[0012] The storage unit is used to store the monitored battery performance data;

[0013] The internal voltage conversion circuit adopts a DC-DC circuit and is configured to convert the dynamic voltage provided by the battery pack into a specific voltage value to provide power to the various functional structures in the low-power intelligent management device.

[0014] Furthermore, in one embodiment, the input port is connected to the output port of the battery pack module and the drilling instrument, and is used to receive real-time current data from the battery pack module and the output vector of the drilling instrument; the output port is connected to the storage module and each individual cell of the battery pack, respectively, and is used to transmit performance index data and battery control signals.

[0015] In an optional embodiment, the low-power intelligent management device is further provided with a connection control switch, which is configured to disconnect the electrical connection with the battery module by the intelligent control unit before the battery is connected to the drilling instrument, so as to avoid redundant operation and useless consumption of battery power.

[0016] Specifically, in one embodiment, the intelligent control unit adopts an MCU structure and is configured as follows: after the battery is connected to the drilling instrument, the control connection control switch is turned on, the output current of the battery is detected, and the connection status of the drilling instrument is identified by determining whether the change in the output current of the battery meets the set conditions. If the drilling instrument has been connected, the low-power intelligent management device is controlled to start the working mode. If the drilling instrument has not been connected, it is in standby mode and continues to periodically detect the output current of the battery.

[0017] Furthermore, in one embodiment, when the intelligent control unit is in working mode, it is configured to monitor the performance index data of the battery pack through the following operations: combining the stored historical performance index data and the real-time collected battery pack output current data to calculate the performance index data of the battery pack, and saving it to the storage unit according to a set period.

[0018] In one optional embodiment, the performance data includes: manufacturing date, total battery capacity, remaining battery capacity, elapsed usage time, estimated remaining usage time, and abnormal discharge conditions.

[0019] In practical applications, in one embodiment, the system is configured to receive initial battery performance data from the host computer via an input interface and save it to the storage unit if it is the first time it is used.

[0020] Furthermore, in one embodiment, when the intelligent control unit is in the working mode, it is also configured to determine the power supply demand based on the received output vector of the drilling instrument, and then generate corresponding battery control signals based on the power supply demand and the measured voltage data of each battery, and send them out through the output port to control the operating state of each individual battery relative to the battery pack module, including the connected state and the disconnected state.

[0021] Specifically, in one embodiment, the intelligent control unit generates control signals to manage the operation of a single battery cell by performing the following operations:

[0022] Step A: Initialize all input and output ports of the low-power intelligent management device;

[0023] Step B: Real-time acquisition of the port interrupt vector of the drilling instrument through the input port, determination of the power supply requirements of the drilling instrument corresponding to the current working mode, and determination of the output voltage value of the corresponding battery module.

[0024] Step C: Obtain real-time measured performance data and output voltage values ​​for each individual cell;

[0025] Step D: Based on the current required output voltage value of the battery pack module, and combining the performance index data of the battery pack and the voltage value of the individual cells, select multiple batteries that meet the output voltage requirement as the current target operating batteries.

[0026] Step E: Generate the corresponding connection status control signal and send it out to each target running battery through the output port;

[0027] Repeat steps B through E.

[0028] In an optional embodiment, the intelligent control unit is further configured to: when performing step D, on the basis of ensuring that the target operating battery meets the output voltage requirements, further select a set number of batteries as the current target operating batteries according to the voltage ranking of each individual battery from high to low.

[0029] In one embodiment, the low-power intelligent management device further includes an internal monitoring unit, which employs a microprocessor monitoring chip to automatically restart the low-power intelligent management device when the program crashes, thereby ensuring the stable operation of the low-power intelligent management device.

[0030] Based on other aspects of the system described in any one or more of the above embodiments, the present invention also provides a low-power management method for drilling battery packs based on real-time performance index monitoring, the method comprising:

[0031] All its input and output ports are initialized by a low-power intelligent management device;

[0032] Upon initial use, the system receives initial battery performance data from the host computer via the input interface and saves it to the storage unit.

[0033] By acquiring the port interrupt vector of the drilling instrument in real time through the input port, the power supply requirements of the drilling instrument corresponding to the current working mode are determined, and the output voltage value of the corresponding battery module is determined.

[0034] Before the battery is connected to the drilling instrument, the intelligent control unit controls the connection control switch to disconnect the electrical connection with the battery module. After the battery is connected to the drilling instrument, the connection control switch is turned on, and the connection status of the drilling instrument is identified by judging the change of the battery's output current. If the battery is connected to the drilling instrument, the low-power intelligent management device is controlled to start the working mode and collect the performance index data of the battery pack. If the battery is not connected to the drilling instrument, it is in standby mode and continues to periodically detect the output current of the battery pack.

[0035] Obtain the real-time measured output voltage values ​​of each individual cell;

[0036] Based on the performance data and voltage values ​​of each individual battery cell, multiple batteries that meet the output voltage requirements are selected as the current target operating batteries;

[0037] The corresponding connection status control signal is generated and sent to each target operating battery through the output port to control the operating status of each individual battery relative to the battery pack module;

[0038] The battery pack's performance metrics include: manufacturing date, total capacity, remaining capacity, elapsed usage time, estimated remaining usage time, and abnormal discharge conditions.

[0039] Based on other aspects of the methods described in the above embodiments, the present invention also provides a storage medium storing program code capable of implementing the methods described in the above embodiments.

[0040] Compared with the closest prior art, the present invention also has the following beneficial effects:

[0041] This invention provides a low-power management method and system for drilling battery packs based on real-time performance index monitoring. The system is equipped with a low-power intelligent management device connected to the working ports of the battery pack module and the drilling instrument. Based on its different operating modes, it monitors the performance index of the battery pack module and controls its own power consumption of the battery pack module to the minimum, so as not to affect the operation of the drilling instrument.

[0042] In addition, the intelligent management device of the present invention can monitor in real time the performance indicators of the battery pack used by the drilling instrument, such as the manufacturing time, total power, remaining power, used time, estimated remaining usage time, and abnormal discharge conditions. This can improve the utilization rate, safety and stability of the battery pack, reduce the cost of using the drilling instrument, and reduce non-drilling (battery replacement) operation time.

[0043] Furthermore, the intelligent management device of the present invention can automatically control the operation of each individual battery in the battery pack based on the output vector of the drilling instrument port and a set strategy to match the different working modes of the drilling instrument, effectively realizing balanced discharge control of the drilling instrument battery pack, improving the lifespan of individual battery cells and the recycling rate of the battery pack, and extending the service time of the battery pack downhole.

[0044] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0045] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0046] Figure 1 This is a schematic diagram of the structure of a low-power management system for a drilling battery pack based on real-time performance index monitoring, provided in an embodiment of the present invention.

[0047] Figure 2 This is a schematic diagram of the performance index monitoring principle of a low-power management system for drilling battery packs based on real-time performance index monitoring, provided in another embodiment of the present invention.

[0048] Figure 3 This is a schematic diagram of the battery operation status control principle of a low-power management system for drilling battery packs based on real-time performance index monitoring, provided in another embodiment of the present invention. Detailed Implementation

[0049] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples. Those skilled in the art will then fully understand how the present invention uses technical means to solve technical problems and achieve technical effects, and will be able to implement the present invention specifically based on the above-described implementation process. It should be noted that, as long as there is no conflict, the various embodiments and features of the present invention can be combined with each other, and the resulting technical solutions are all within the protection scope of the present invention.

[0050] Although the flowchart describes the operations as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. The order of the operations can be rearranged. A process can terminate when its operation is complete, but it may also have additional steps not included in the diagram. A process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0051] The term “and / or” as used herein includes any and all combinations of one or more of the associated items listed. When a unit is referred to as “connected” or “coupled” to another unit, it may be directly connected to or coupled to said other unit, or there may be an intermediate unit present.

[0052] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms “a” and “an” as used herein are also intended to include the plural. It should also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, without excluding the presence or addition of one or more other features, integers, steps, operations, units, components, and / or combinations thereof.

[0053] Due to the limitations of the construction environment, measurement-while-drilling (MWD) instruments are mostly powered by battery packs when working in the well. Once the battery power is depleted, the drill string is pulled out to replace the battery, and then the drilling continues. Therefore, the real-time available power of the instrument's battery pack directly restricts the drilling speed, operation time, and the operating costs of the instrument and related equipment.

[0054] Because the rated voltage of a single battery is too low to provide the voltage required for downhole instruments to operate, drilling instruments in practical applications often use series-connected battery packs for power. However, the low recycling rate of existing battery packs and the lack of intelligent management during use lead to increased battery consumption, resulting in high operating costs for drilling instruments.

[0055] In the existing operating mechanism of drilling instruments, when drilling instruments are used in the field, they mostly rely on past application experience to judge the battery usage. They generally lack the calculation and management of various performance indicators such as the total remaining battery power, the time used, and the estimation of the remaining usage time. In addition, the relationship between the remaining battery power and the measured voltage across the battery pack is non-linear, making it difficult to conduct targeted assessments of the remaining battery power. The lack of management and analysis functions for the performance indicators of the battery packs used by drilling instruments increases the non-drilling operation time caused by replacing batteries. Furthermore, the output voltage of the battery pack is constant for different operating modes of the instrument. The adjustment or conversion circuit of the instrument further converts or consumes the output voltage to meet the voltage requirements of different operating modes, which is not conducive to the optimized development of drilling instrument battery packs.

[0056] Although some researchers have designed corresponding monitoring and management devices for drilling power supplies, such as the safety detection device for drilling batteries disclosed in CN108957326A, which includes: a drilling battery physical state detection module for detecting the physical state of the drilling battery and generating corresponding physical state signals; a control module connected to the drilling battery physical state detection module for generating a safety state signal for the drilling battery based on the physical state signals; and an output terminal connected to the control module for connecting or disconnecting the electrical connection between the drilling battery and the output terminal based on the safety state signal. While this device can control the connection status of the battery module in real time, it relies solely on the physical state of the battery itself. Essentially, it is a self-diagnosis and adjustment scheme for physical faults in the power module, and cannot effectively monitor the performance indicators of the battery pack within the power module. It also cannot progressively control and adjust the battery's downhole operating mode, thus failing to improve the quality and lifespan of the drilling instrument power module's normal operation.

[0057] To address the aforementioned issues, this invention provides a low-power management method and system for downhole battery packs based on real-time performance monitoring. It incorporates a low-power intelligent management device connected to the battery pack module. After the downhole instrument is connected, the device adjusts its operating mode by analyzing the real-time output current of the battery, ensuring low-power operation while effectively collecting real-time performance data during battery pack operation. This avoids increasing the number of trips to the well due to poor battery condition and provides decision-making basis for controlling the connection status of the downhole battery pack module. Furthermore, this invention flexibly adjusts the connection status of each individual battery cell by combining performance data and the power supply requirements of the downhole instrument. This improves the lifespan of individual batteries and the cycle utilization rate of the battery pack through discharge equalization management, thereby reducing instrument operating costs. Additionally, it manages and adjusts the battery pack power supply mode through a defined interface protocol, dynamically adjusting the power supply mode according to the working status of the downhole instrument, thereby reducing power consumption and extending the single-cycle usage time and overall lifespan of the battery pack downhole.

[0058] The structure and working principle of the low-power management system for drilling battery packs based on real-time performance index monitoring, according to embodiments of the present invention, will be described in detail below with reference to the accompanying drawings. Although the logical sequence of operations is shown in the drawings, in some cases, the operations shown or described may be performed in a different order than that shown here.

[0059] Example 1

[0060] Figure 1 This diagram illustrates the structure of a low-power management system for a drilling battery pack based on real-time performance index monitoring, as provided in Embodiment 1 of the present invention. (Refer to...) Figure 1 It can be seen that the system includes:

[0061] The battery module consists of multiple individual batteries connected in series according to the principle of redundancy, and is used to power the operation of the low-power intelligent management device and the drilling instrument.

[0062] The low-power intelligent management device is connected to the working ports of the battery pack module and the drilling instrument. It is configured to monitor the performance indicators of the battery pack module based on its different operating modes, and automatically control the operation of each individual battery in the battery pack according to the set strategy based on the output vector of the drilling instrument port to match the different operating modes of the drilling instrument.

[0063] The intelligent management system provided in the above embodiments can not only clearly obtain the detailed performance index data of each individual cell in the battery pack module, allowing operators to optimize and replace individual cells with performance index data that have room for optimization before going downhole, ensuring that the battery pack module is in optimal condition and controlling the probability of drilling failure due to battery pack performance issues; but also, by combining performance index data with a set interface protocol, it can achieve precise management and adjustment of the battery pack power supply mode, dynamically adjust the battery pack power supply mode according to the working status of the drilling instrument, realize balanced discharge management of the battery module, extend the unit usage time of the battery pack downhole, and extend the service life of the battery pack module.

[0064] In practical applications, the battery pack module is set according to the redundancy principle. If the standard voltage required by the drilling instrument needs to be powered by n battery cells in series, then the battery pack should contain s battery cells, where s>n. This facilitates the intelligent management system to dynamically manage the battery pack, such as flexibly controlling the battery pack in case of abnormal discharge, thereby improving the stability and safety of the battery pack when used downhole.

[0065] Preferably, in one embodiment, the low-power intelligent management device includes: a connection port, an intelligent control unit, an internal voltage conversion circuit, and a storage unit;

[0066] The connection port includes an input port and an output port. The input port is connected to the output port of the battery module and the drilling instrument, and is used to receive the real-time current data of the battery module and the output vector of the drilling instrument. The output port is connected to the storage module and each individual cell of the battery module, and is used to transmit performance index data and battery control signals.

[0067] The intelligent control unit is connected between the input port and the output port, and is configured to be powered by the battery pack, acquire the performance index data of the battery pack in real time, and control the operating status of each individual battery relative to the battery pack module.

[0068] The storage unit is used to store the monitored battery performance data; in practical applications, the storage unit can be a Flash memory chip.

[0069] The internal voltage conversion circuit uses a DC-DC converter, configured to convert the dynamic voltage provided by the battery pack into a specific voltage value, providing power to the various functional structures in the low-power intelligent management device. The intelligent control unit employs an MCU architecture.

[0070] Based on the hardware structure of the low-power intelligent management device in the above embodiments, the low-power intelligent management device of the present invention consists of a connection port, an MCU, a DC-DC circuit, and a storage unit. The MCU is the control core of the management system, and the DC-DC circuit converts the dynamic voltage provided by the battery pack into a specific voltage value to provide energy for the driving and operation of the hardware circuit of the low-power intelligent management device. It can be seen that the intelligent management device of the present invention adopts a minimal hardware system and belongs to a low-power intelligent management hardware structure. While ensuring the intelligent management function, it keeps the hardware power consumption of the overall management system to a minimum.

[0071] Figure 2 This diagram illustrates the performance indicator monitoring principle of the low-power management system for drilling battery packs based on real-time performance indicator monitoring provided in this embodiment of the invention. Figure 2 As shown, in an optional embodiment, the low-power intelligent management device is further provided with a connection control switch, which is configured to disconnect the electrical connection with the battery module by the intelligent control unit before the battery is connected to the drilling instrument, so as to avoid redundant operation and useless consumption of battery power.

[0072] Furthermore, since the management system of this invention requires battery power after the connection with the battery pack module is established, the management system enters standby mode and only periodically measures the output current of the battery pack. Therefore, in one embodiment, the intelligent control unit is configured as follows: after the battery is connected to the drilling instrument, the control connection switch is turned on, the output current of the battery is detected, and the connection status of the drilling instrument is identified by determining whether the change in the output current of the battery meets the set conditions. If the drilling instrument is connected, the low-power intelligent management device is controlled to start the working mode; if the drilling instrument is not connected, it is in standby mode and continues to periodically detect the output current of the battery. Initially, all s battery cells are connected to the battery pack. When it is determined that the drilling instrument is not yet connected, the system enters standby mode and connects n battery cells to the battery pack through n control ports to supply power. At this time, only the overall output current of the battery pack is periodically measured.

[0073] Specifically, after restoring the battery pack's power supply to the system by reconnecting the wiring, it can be determined whether the battery pack has been connected to the drilling instrument by detecting whether the overall output current of the battery pack has increased significantly. If it has been connected to the drilling instrument, the system starts working mode; if it has not been connected to the drilling instrument, the system is in standby mode, further reducing system power consumption.

[0074] In a preferred embodiment, when the intelligent control unit is in working mode, it is further configured to determine the power supply demand based on the received output vector of the drilling instrument, and then generate corresponding battery control signals based on the power supply demand and the measured voltage data of each battery, and send them out through the output port to control the operating state of each individual battery relative to the battery pack module, including the connected state and the disconnected state.

[0075] Furthermore, in one embodiment, the low-power intelligent management device also includes a crystal oscillator connected to the management control unit to provide a clock cycle for the operation of the intelligent control unit, thereby improving the accuracy of the management control unit's decisions.

[0076] Furthermore, in one embodiment, the low-power intelligent management device also includes an internal monitoring unit, which uses a microprocessor monitoring chip to automatically restart the low-power intelligent management device when the program crashes, ensuring the stable operation of the low-power intelligent management device and preventing the MCU control program from crashing and failing to perform management functions normally, or even affecting related components.

[0077] Furthermore, if the measured output current of the battery pack increases and the increase exceeds a set threshold, it is determined that the battery pack has been connected to the drilling instrument. The system then enters working mode, monitors and calculates various performance indicators of the battery pack, measures the output voltage of each battery cell, and activates control logic for the battery pack. In practical applications, in one embodiment, when the intelligent control unit is in working mode, it is configured to monitor the performance indicator data of the battery pack through the following operations: combining stored historical performance indicator data and real-time collected battery pack output current data to calculate the performance indicator data of the battery pack; collecting the output voltage of each battery cell in real time; and saving the data to the storage unit according to a set cycle. The performance indicator data includes: manufacturing date, total capacity, remaining capacity, used time, estimated remaining usage time, and abnormal discharge conditions.

[0078] In practical applications, the output current of the battery pack can be measured periodically. Every T seconds (the smaller the T, the more accurate the calculation of power consumption), the output current and the voltage of each individual battery cell are measured. The measured value I is taken as the representative value of the output current within that cycle. The total power consumption and battery usage time are calculated by summing up the power consumption within the cycle.

[0079] In addition, to prevent data loss during system restarts, the total power consumption and battery usage time are stored in the Flash memory chip at specific intervals as data backups in the event of a system restart.

[0080] Specifically, if the measured output current of the battery pack is too low, too high, or fluctuates significantly, it is determined to be an abnormal discharge, and the corresponding time information and current measurement value are stored in the Flash memory chip.

[0081] During the drilling process, after the drilling instrument exits the well normally, the host computer software obtains battery-related data stored in the management system through the RS-485 communication bus, processes and analyzes the data, obtains the remaining battery power by the total battery power and total power consumption, obtains the average discharge current by the total power consumption and the used time, estimates the remaining battery life by the remaining battery power and average discharge current, and evaluates the stability and safety of the battery module by recording abnormal battery discharge conditions.

[0082] Furthermore, considering that the management system of this invention lacks basic data for calculating performance indicators upon initial use, which could lead to the inability to correctly obtain valid real-time performance indicator data, in a preferred embodiment, the system is configured to receive initial battery performance data from the host computer via an input interface and save it to the storage unit if it is being used for the first time. In practical applications, the initial battery performance data from the host computer can be obtained via the input interface through an RS-485 communication bus. That is, upon initial system use, the host computer sends the performance indicators of each battery component (manufacture date, total capacity, remaining capacity, elapsed time, estimated remaining usage time, abnormal discharge conditions, etc.) to the system via the RS-485 communication bus, and the storage unit stores the relevant indicators.

[0083] Specifically, Figure 3 This diagram illustrates the battery operation status control principle of the low-power management system for drilling battery packs based on real-time performance index monitoring provided in an embodiment of the present invention. Figure 3 As shown, in one embodiment, in the operating mode, the intelligent control unit generates control signals to achieve operation management of the individual battery cells by performing the following operations:

[0084] Step A: Initialize all input and output ports of the low-power intelligent management device;

[0085] Step B: Real-time acquisition of the port interrupt vector of the drilling instrument through the input port, determination of the power supply requirements of the drilling instrument corresponding to the current working mode, and determination of the output voltage value of the corresponding battery module.

[0086] Step C: Obtain real-time measured performance data and output voltage values ​​for each individual cell;

[0087] Step D: Based on the current required output voltage value of the battery pack module, and in conjunction with the performance index data of the battery pack, select multiple batteries that meet the output voltage value requirements as the current target operating batteries according to the output voltage value of each individual battery.

[0088] Step E: Generate the corresponding connection status control signal and send it out to each target running battery through the output port;

[0089] Repeat steps B through E.

[0090] In actual operation, the intelligent management system of the present invention adopts the minimum hardware system with the simplest hardware architecture, which minimizes power consumption to the greatest extent. The hardware system only needs to ensure the basic management functions described in the above embodiments.

[0091] The specific working mode is determined by the drilling instrument based on its working state, which can reflect the corresponding different power supply requirements. The drilling instrument sets the corresponding power supply requirements by setting a specific output port high (avoiding the use of communication serial ports and commands).

[0092] Based on the above logic, the intelligent management system can adopt an interrupt mode (non-polling mode). After confirming that an interrupt has been received from a specific output port of the drilling instrument, the system sets the corresponding power supply mode according to different high-level ports and determines the output power supply voltage value of the control battery pack.

[0093] The battery pack module in this invention is set according to the redundancy principle. If the standard voltage required by the drilling instrument needs to be powered by n battery cells in series, then the battery pack should contain s battery cells, where s>n. For example, the battery pack contains n+3 battery cells to facilitate the intelligent management system to dynamically manage the battery pack.

[0094] The intelligent management system initializes n+3 output ports, which can control the connection or disconnection of each battery cell in the battery pack.

[0095] The input ports of the intelligent management system are initialized, and each input port is connected to the output port of the power supply mode selection for the drilling instrument control, and can receive the corresponding port interrupt vector signal;

[0096] Simultaneously, the voltage of n+3 individual battery cells is measured in real time. Based on the power supply requirements of the drilling instrument and the performance data of the batteries, a decision is made to select a set number of battery cells to be connected to the battery pack through the output control port as the initial power supply voltage.

[0097] In a preferred embodiment, the intelligent control unit is further configured to: when performing step D, on the basis of ensuring that the target operating battery meets the output voltage requirements, further select a set number of batteries as the current target operating batteries according to the voltage ranking of each individual battery from high to low.

[0098] Furthermore, in one embodiment, once it is determined that the drilling instrument will be connected and the system enters the working mode, various performance indicators of the battery pack can be evaluated in real time, and the connection status of each individual cell within the battery pack can be adjusted according to these performance indicators, including:

[0099] The remaining power and remaining usage time of the battery pack are evaluated. If either of them reaches a set threshold, other battery cells are automatically selected to be connected to the battery pack to provide power based on the execution logic of step D above.

[0100] The system analyzes whether there are any abnormal discharge conditions in the battery pack. If so, it automatically selects other battery cells to connect to the battery pack to provide power based on the execution logic of step D above.

[0101] Based on the control strategies described in the above embodiments, the stability of the downhole battery pack operation can be effectively improved, and the uptime of the downhole drilling instrument can be increased.

[0102] During operation, the required power supply mode of the drilling instrument is determined by the received port interrupt vector. On the basis of ensuring that the target operating battery meets the output voltage requirements, the output voltage value of the battery pack is determined according to different power supply modes. The voltage of each battery cell is sorted and the n battery cells with higher voltage are connected to the battery pack through each output port.

[0103] Furthermore, in one embodiment, in the working mode, the intelligent control unit can also periodically acquire the remaining power, remaining usage time, and abnormal discharge status of each battery cell in the battery pack, so as to more accurately locate the object that needs to be replaced when switching the access status of the battery cell.

[0104] Based on this, when selecting the battery cells to be connected, the remaining charge and remaining usage time recorded in the previous data collection cycle of the individual battery cells can be combined with the battery output voltage for selection. For example, if the output voltages of other battery cells are almost the same but the remaining charge is significantly different, then the individual battery cells with more remaining charge can be selected to be connected to the battery pack for power supply.

[0105] In an optional embodiment, the intelligent control unit is further configured to: periodically measure the voltage across each battery cell; if the difference between the highest and lowest voltages exceeds a set threshold, disconnect the battery cell with the lowest voltage and select the battery cell with the highest voltage from the remaining cells to connect to the battery pack. By periodically selecting other battery cells with higher voltages to replace unsuitable cells in the battery pack and disconnecting those with excessively low voltages, the stability of the battery pack is improved. This ensures balanced stability during battery pack operation, enhances operational quality, and extends the lifespan of the battery pack module.

[0106] The intelligent management system described in any one or more of the above embodiments, based on its unique low-power management device hardware architecture and intelligent management function implementation method, can intelligently manage the battery pack used by the drilling instrument based on low power consumption. It can flexibly collect the performance index data of the battery pack in the power module of the drilling instrument, providing data support for the maintenance and optimization of the power module by the staff, reducing the probability of mid-well trip due to poor battery condition, and also helping to achieve discharge balance management of the battery pack module, improving the life of individual battery cells and the recycling rate of the battery pack, thereby reducing the operating cost of the instrument. Furthermore, it can flexibly adjust the battery pack power supply mode through the set interface protocol, dynamically adjust the battery pack power supply mode according to the working status of the drilling instrument, extend the unit working time of the battery pack and the overall downhole usage time, and reduce the non-drilling operation time caused by instrument battery replacement.

[0107] In the low-power management system for drilling battery packs based on real-time performance index monitoring provided in this embodiment of the invention, each module or unit structure can operate independently or in combination according to actual measurement and control requirements to achieve the corresponding technical effects.

[0108] Example 2

[0109] The above-described embodiments of the present invention have provided a detailed description of the system. Based on other aspects of the system described in any one or more of the above embodiments, the present invention also provides a low-power management method for drilling battery packs based on real-time performance indicator monitoring. This system is applied to the low-power management system for drilling battery packs based on real-time performance indicator monitoring described in any one or more of the above embodiments. Specific embodiments are given below for detailed description.

[0110] In one embodiment, the method includes:

[0111] All its input and output ports are initialized by a low-power intelligent management device;

[0112] Upon initial use, the system receives initial battery performance data from the host computer via the input interface and saves it to the storage unit.

[0113] By acquiring the port interrupt vector of the drilling instrument in real time through the input port, the power supply requirements of the drilling instrument corresponding to the current working mode are determined, and the output voltage value of the corresponding battery module is determined.

[0114] Before the battery is connected to the drilling instrument, the intelligent control unit controls the connection control switch to disconnect the electrical connection with the battery module. After the battery is connected to the drilling instrument, the connection control switch is turned on, and the connection status of the drilling instrument is identified by judging the change of the battery's output current. If the battery is connected to the drilling instrument, the low-power intelligent management device is controlled to start the working mode and collect the performance index data of the battery pack. If the battery is not connected to the drilling instrument, it is in standby mode and continues to periodically detect the output current of the battery pack.

[0115] Obtain the real-time measured output voltage values ​​of each individual cell;

[0116] Based on the battery pack's performance data and voltage values, multiple batteries that meet the output voltage requirements are selected as the current target operating batteries;

[0117] The corresponding connection status control signal is generated and sent to each target operating battery through the output port to control the operating status of each individual battery relative to the battery pack module;

[0118] The battery pack's performance metrics include: manufacturing date, total capacity, remaining capacity, elapsed usage time, estimated remaining usage time, and abnormal discharge conditions.

[0119] In one embodiment, the low-power intelligent management device used in the method includes: a connection port, an intelligent control unit, an internal voltage conversion circuit, and a storage unit;

[0120] The connection port includes an input port and an output port. The input port is connected to the output port of the battery module and the drilling instrument, and is used to receive the real-time current data of the battery module and the output vector of the drilling instrument. The output port is connected to the storage module and each individual cell of the battery module, and is used to transmit performance index data and battery control signals.

[0121] The intelligent control unit is connected between the input port and the output port, and is configured to be powered by the battery pack, acquire the performance index data of the battery pack in real time, and control the operating status of each individual battery relative to the battery pack module.

[0122] The storage unit is used to store the monitored battery performance data;

[0123] The internal voltage conversion circuit adopts a DC-DC circuit and is configured to convert the dynamic voltage provided by the battery pack into a specific voltage value to provide power to the various functional structures in the low-power intelligent management device.

[0124] Furthermore, in one embodiment, the low-power intelligent management device further includes a connection control switch, which is configured to, before the battery is connected to the drilling instrument, control the connection control switch to disconnect the electrical connection with the battery module, thereby avoiding redundant operation and unnecessary consumption of battery power.

[0125] After the battery is connected to the drilling instrument, in a preferred embodiment, an MCU structure is used as the intelligent control unit to collect battery performance indicators through the following operations:

[0126] When the control connection switch is turned on, the output current of the battery is detected. By determining whether the change in the output current of the battery meets the set conditions, the connection status of the drilling instrument is identified. If the drilling instrument is connected for use, the low-power intelligent management device is controlled to start the working mode. If the drilling instrument is not connected for use, it is in standby mode and continues to periodically detect the output current of the battery.

[0127] Specifically, in one embodiment, when the intelligent control unit is in operating mode, it is configured to monitor the battery pack's performance indicators by combining stored historical performance indicator data and real-time collected battery pack output current data to calculate the battery pack's performance indicators, and save them to the storage unit according to a set period. The performance indicator data includes: manufacturing date, total capacity, remaining capacity, elapsed usage time, estimated remaining usage time, and abnormal discharge conditions.

[0128] In a preferred embodiment, if it is the first time using the device, the initial performance data of the battery pack is received from the host computer through the input interface and saved to the storage unit.

[0129] Furthermore, in one embodiment, the method determines the power supply requirement based on the received output vector of the drilling instrument, and then generates a corresponding battery control signal based on the power supply requirement and the measured voltage data of each battery, and sends it out through the output port to control the operating state of each individual battery relative to the battery pack module, including the connected state and the disconnected state.

[0130] In an optional embodiment, during the process of selecting the target operating battery, while ensuring that the target operating battery meets the output voltage requirements, a set number of batteries are further selected as the current target operating batteries based on the voltage ranking of each individual battery from high to low.

[0131] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0132] It should be noted that, in other embodiments of the present invention, the method can also combine one or more of the above embodiments to obtain a new low-power management method for drilling battery packs based on real-time performance index monitoring, so as to achieve optimized control of the power consumption of drilling instruments.

[0133] Based on the methods in any one or more of the above embodiments of the present invention, the present invention also provides a storage medium storing program code that can implement the methods described in any one or more of the above embodiments. When the program code is executed by the operating system, it can implement the low-power management method for drilling battery packs based on real-time performance indicator monitoring as described above.

[0134] It should be understood that the embodiments disclosed herein are not limited to the specific structures, processing steps, or materials disclosed herein, but should be extended to equivalent substitutions of these features as understood by those skilled in the art. It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

[0135] The phrase "an embodiment" in the specification means that a specific feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Therefore, the phrase "an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0136] While the embodiments disclosed in this invention are as described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and variations in form and detail of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection for this invention shall still be determined by the scope defined in the appended claims.

Claims

1. A low-power management method for drilling battery packs based on real-time performance index monitoring, characterized in that, The method includes: All its input and output ports are initialized by a low-power intelligent management device; Upon initial use, the system receives initial battery performance data from the host computer via the input interface and saves it to the storage unit. By acquiring the port interrupt vector of the drilling instrument in real time through the input port, the power supply requirements of the drilling instrument corresponding to the current working mode are determined, and the output voltage value of the corresponding battery module is determined. Before the battery is connected to the drilling instrument, the intelligent control unit controls the connection control switch to disconnect the electrical connection with the battery module. After the battery is connected to the drilling instrument, the connection control switch is turned on. The connection status of the drilling instrument is identified by judging the change of the battery's output current. If the battery is connected to the drilling instrument, the low-power intelligent management device is controlled to start the working mode and collect the battery's performance index data, including: manufacturing time, total capacity, remaining capacity, used time, estimated remaining usage time, and abnormal discharge conditions. If the battery is not connected to the drilling instrument, it is in standby mode and continues to periodically detect the battery's output current. Obtain the real-time measured output voltage values ​​of each individual cell; Based on the performance data and voltage values ​​of each individual battery cell, multiple batteries that meet the output voltage requirements are selected as the current target operating batteries; The corresponding connection status control signals are generated and sent to each target operating battery through the output port to control the operating status of each individual battery relative to the battery pack module.

2. A storage medium, characterized in that, The storage medium stores program code that can implement the method as described in claim 1.

3. A low-power management system for drilling battery packs based on real-time performance index monitoring, characterized in that, The system performs the method as described in claim 1, the system comprising: The battery module consists of multiple individual batteries connected in series according to the principle of redundancy, and is used to power the operation of the low-power intelligent management device and the drilling instrument. The low-power intelligent management device is connected to the working ports of the battery pack module and the drilling instrument. It is configured to monitor the performance indicators of the battery pack module based on its different operating modes, and automatically control the operation of each individual battery in the battery pack according to the set strategy based on the output vector of the drilling instrument port to match the different operating modes of the drilling instrument.

4. The system according to claim 3, characterized in that, The low-power intelligent management device includes: a connection port, an intelligent control unit, an internal voltage conversion circuit, and a storage unit; The connection port includes an input port and an output port; The intelligent control unit is connected between the input port and the output port, and is configured to be powered by the battery pack, acquire the performance index data of the battery pack in real time, and control the operating status of each individual battery relative to the battery pack module. The storage unit is used to store the monitored battery performance data; The internal voltage conversion circuit adopts a DC-DC circuit and is configured to convert the dynamic voltage provided by the battery pack into a specific voltage value to provide power to the various functional structures in the low-power intelligent management device.

5. The system according to claim 4, characterized in that, The input port is connected to the output port of the battery module and the drilling instrument, and is used to receive real-time current data from the battery module and the output vector of the drilling instrument; the output port is connected to the storage module and each individual cell of the battery module, and is used to transmit performance index data and battery control signals.

6. The system according to claim 3, characterized in that, The low-power intelligent management device is also equipped with a connection control switch, which is configured to disconnect the electrical connection with the battery module by the intelligent control unit before the battery is connected to the drilling instrument, so as to avoid redundant operation and useless consumption of battery power.

7. The system according to claim 3, characterized in that, The intelligent control unit adopts an MCU structure and is configured as follows: after the battery is connected to the drilling instrument, the control connection switch is turned on, the output current of the battery is detected, and the connection status of the drilling instrument is identified by determining whether the change in the output current of the battery meets the set conditions. If the drilling instrument is connected, the low-power intelligent management device is controlled to start the working mode. If the drilling instrument is not connected, it is in standby mode and continues to periodically detect the output current of the battery.

8. The system according to claim 3, characterized in that, When the intelligent control unit is in working mode, it is configured to monitor the performance index data of the battery pack through the following operations: combining the stored historical performance index data and the real-time collected battery pack output current data to calculate the performance index data of the battery pack, and saving it to the storage unit according to the set period.

9. The system according to claim 8, characterized in that, The performance data includes: manufacturing date, total battery capacity, remaining battery capacity, elapsed usage time, estimated remaining usage time, and abnormal discharge conditions.

10. The system according to claim 3, characterized in that, The system is configured such that, if it is the first time using the system, it receives initial battery performance data from the host computer via the input interface and saves it to the storage unit.

11. The system according to claim 3, characterized in that, When the intelligent control unit is in working mode, it is also configured to determine the power supply demand based on the received output vector of the drilling instrument, and then generate corresponding battery control signals based on the power supply demand and the measured voltage data of each battery, and send them out through the output port to control the operating state of each individual battery relative to the battery pack module, including the connected state and the disconnected state.

12. The system according to claim 3, characterized in that, The intelligent control unit generates control signals to manage the operation of individual battery cells by performing the following operations: Step A: Initialize all input and output ports of the low-power intelligent management device; Step B: Collect the port interrupt vector of the drilling instrument in real time through the input port, determine the power supply requirements of the drilling instrument corresponding to the current working mode, and determine the output voltage value of the corresponding battery module. Step C: Obtain real-time measured performance data and output voltage values ​​for each individual cell; Step D: Based on the current required output voltage value of the battery pack module, and combining the performance index data of the battery pack and the voltage value of the individual cells, select multiple batteries that meet the output voltage requirement as the current target operating batteries. Step E: Generate the corresponding connection status control signal and send it out to each target running battery through the output port; Repeat steps B through E.

13. The system according to claim 12, characterized in that, The intelligent control unit is further configured to: when executing step D, on the basis of ensuring that the target operating battery meets the output voltage requirements, further select a set number of batteries as the current target operating batteries according to the voltage ranking of each individual battery from high to low.

14. The system according to claim 4, characterized in that, The low-power intelligent management device also includes an internal monitoring unit, which uses a microprocessor monitoring chip to automatically restart the low-power intelligent management device when the program crashes, ensuring the stable operation of the low-power intelligent management device.

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