Parallel formation and component distribution equipment series mode calibration method

Abstract

The application discloses a parallel formation, a series mode calibration method, a power supply calibration system and electronic equipment, which is applied to the power supply calibration system, mainly sends setting instructions and test instructions through the host computer, selects two charging channels from the first and second series units in parallel, charges through the two channels in the two series units, obtains the current true value, and the host computer calculates the calibration coefficient according to the current true value and the sampling current value; the power supply connected to each channel carries out precision calibration on the charging and discharging current according to the calibration coefficient. The method adopts the calibration mode of channel series connection, calibrates after the multiple channels are connected in series, reduces the cost, improves the calibration efficiency, and improves the consistency of the current precision of different power supplies after calibration.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery formation and grading, in particular to a parallel formation and grading equipment series mode calibration method, a power supply calibration system and an electronic device. BACKGROUND

[0002] At present, the calibration method of the formation and grading power supply mainly adopts the method of every two channels counter calibration. In this method, multiple channels in a calibration detection unit share one calibration detection device, and the channel to be calibrated is switched by the switching of the relay. However, when the number of channels is too large, the calibration efficiency is low.

[0003] In the prior art, when the number of channels is too large, multiple calibration detection devices are added to shorten the calibration time. Although this improves the calibration efficiency, it also leads to an increase in cost. Moreover, since multiple calibration detection devices are used to calibrate the power supply, the differences between the current collection elements will cause fluctuations in the output current accuracy of the power supply after calibration, thereby causing deviations in the current consistency between different power supplies, which not only affects the quality and reliability of the product, but also increases the subsequent debugging and testing costs. SUMMARY

[0004] The embodiments of the present application disclose a parallel formation and grading equipment series mode calibration method, a power supply calibration system and an electronic device. By calibrating the power supply after connecting multiple channels in series, the number of calibration detection units required is reduced, not only saving costs, but also effectively reducing the calibration time and improving the consistency of the current accuracy of different power supplies after calibration.

[0005] The first aspect of the embodiments of the present application discloses a parallel formation and grading equipment series mode calibration method, applied to a power supply calibration system. The power supply calibration system includes a power supply calibration tool and an upper computer. The power supply calibration tool includes a first series unit, a second series unit, a sampling resistor and a calibration detection device. Each series unit is composed of multiple channels connected in series. Each channel is connected to one power supply. Each channel is connected in parallel to one sampling resistor. The calibration detection device is connected to the first series unit and the second series unit respectively. The first series unit and the second series unit are connected in parallel through the calibration detection device. The method comprises the following steps:

[0006] The upper computer sends a setting instruction to the power supply calibration tool;

[0007] The power supply calibration tool controls one of the channels of the first series unit as a first channel and controls one of the channels of the second series unit as a second channel according to the setting instruction. The power supply connected to the first channel is a first power supply, and the power supply connected to the second channel is a second power supply;

[0008] The host computer sends a first test instruction and a second test instruction to the power supply calibration tool, the first test instruction is used to control the first power supply to be in a constant voltage charging state and to control the second power supply to be in a constant voltage discharging state, and the second test instruction is used to control the first power supply to be in a constant voltage discharging state and to control the second power supply to be in a constant voltage charging state;

[0009] The power supply calibration tool obtains the current true value of the first power supply group and the current true value of the second power supply group according to the first test instruction and the second test instruction, and sends the current true value of the first power supply group and the current true value of the second power supply group to the host computer, the current true value includes a charging current value and a discharging current value, the first power supply group is the power supply connected by all the channels of the first series unit, and the second power supply group is the power supply connected by all the channels of the second series unit;

[0010] The host computer obtains and sends a first calibration coefficient to each power supply in the first power supply group and obtains and sends a second calibration coefficient to each power supply in the second power supply group according to the current true value of the first power supply group, the current true value of the second power supply group and the corresponding sampling current value, and the sampling current value is obtained through the sampling resistor;

[0011] Each power supply in the first power supply group performs charging current accuracy or discharging current calibration according to the first calibration coefficient, and each power supply in the second power supply group performs discharging current accuracy or charging current accuracy calibration according to the second calibration coefficient.

[0012] As an optional implementation, in the first aspect of the embodiment, the power supply calibration tool further comprises a tool control module, the tool control module is connected with the host computer and the calibration detection device respectively, the current true value of the first power supply group includes the discharging current true value of the first power supply group and the charging current true value of the first power supply group, the current true value of the second power supply group includes the discharging current true value of the second power supply group and the charging current true value of the second power supply group, and the power supply calibration tool obtains the current true value of the first power supply group and the current true value of the second power supply group according to the first test instruction and the second test instruction, including:

[0013] The tool control module receives the first test instruction, controls the first power supply to be in a constant voltage charging state and controls the second power supply to be in a constant voltage discharging state according to the first test instruction, obtains the charging current value of the first power supply group and obtains the discharging current value of the second power supply group;

[0014] The tool control module receives the second test instruction, controls the first power supply to be in a constant voltage discharge state and controls the second power supply to be in a constant voltage charge state according to the second test instruction, obtains a discharge current value of the first power supply group, and obtains a charge current value of the second power supply group.

[0015] As an optional implementation, in the first aspect of the embodiment, the first test instruction includes a first constant voltage charge instruction and a first constant voltage discharge instruction, the tool control module receives the first test instruction, controls the first power supply to be in a constant voltage charge state and controls the second power supply to be in a constant voltage discharge state according to the first test instruction, obtains a charge current value of the first power supply group, and obtains a discharge current value of the second power supply group, including:

[0016] The tool control module receives the first constant voltage charge instruction, obtains a first sampling voltage of each of the channels in the first series unit and the second series unit when the first constant voltage charge instruction is used to control the first power supply to be in a constant voltage charge state, and reports the first sampling voltage of each of the channels to the upper computer.

[0017] The upper computer judges whether each of the channels is in a normal state according to whether the first sampling voltage of each of the channels is a corresponding preset voltage value, and sends the first constant voltage discharge instruction when each of the channels is in the normal state.

[0018] The tool control module receives the first constant voltage discharge instruction, controls the second power supply to be in a constant voltage discharge state according to the first constant voltage discharge instruction, and obtains a charge current value of the first power supply group and a discharge current value of the second power supply group.

[0019] As an optional implementation, in the first aspect of the embodiment, the first test instruction includes a first constant voltage charge instruction and a first constant voltage discharge instruction, the tool control module receives the first test instruction, controls the first power supply to be in a constant voltage charge state and controls the second power supply to be in a constant voltage discharge state according to the first test instruction, obtains a discharge current value of the first power supply, and obtains a charge current value of the second power supply, including:

[0020] The tool control module receives the first constant voltage charge instruction, obtains a first sampling voltage of each of the channels in the first series unit and the second series unit when the first constant voltage charge instruction is used to control the first power supply to be in a constant voltage charge state, and reports the first sampling voltage of each of the channels to the upper computer.

[0021] The host computer judges whether each channel is in a normal state according to whether the sampling voltage of each channel is a corresponding preset voltage value, and sends a short-circuit instruction in a case where a target channel is determined to be in an abnormal state, the short-circuit instruction being used to indicate that the target channel is in a short-circuit state;

[0022] The tool control module controls the target channel to be in the short-circuit state according to the short-circuit instruction;

[0023] The host computer sends the first constant-voltage discharge instruction;

[0024] The tool control module receives the first constant-voltage discharge instruction, controls the second power supply to be in a constant-voltage discharge state according to the first constant-voltage discharge instruction, and obtains a charging current value of the first power supply group and a discharging current value of the second power supply group.

[0025] As an optional implementation, in the first aspect of the embodiment, the host computer judges whether each channel is in a normal state according to whether the first sampling voltage of each channel is a corresponding preset voltage value, and the method comprises the following steps of:

[0026] judging whether the first sampling voltage of the first channel corresponding to the first power supply and the second channel corresponding to the second power supply is a first preset voltage value, and obtaining a first judgment result;

[0027] judging whether the first sampling voltage of other channels except the first channel and the second channel is a second preset voltage value, and obtaining a second judgment result, the second preset voltage value being less than the first preset voltage value;

[0028] in a case where the first judgment result and the second judgment result are both yes, judging that each channel is in a normal state;

[0029] in a case where the first sampling voltage of the target channel except the first channel and the second channel is not the second preset voltage value, determining that the target channel is in an abnormal state.

[0030] As an optional implementation, in the first aspect of the embodiment, each channel is further provided with a switch tube, the switch tube being in an open state, the sampling resistor of each channel being connected with the switch tube, and the tool control module controls one of the channels of the first series unit as a first channel and controls one of the channels of the second series unit as a second channel according to the setting instruction, and the method comprises the following steps of:

[0031] The tool control module closes the switch tube of the first channel and the switch tube of the second channel according to the setting instruction, so that the sampling resistor of the first channel is connected with the positive electrode and the negative electrode of the first power supply, and the sampling resistor of the second channel is connected with the positive electrode and the negative electrode of the second power supply.

[0032] As an optional implementation, in the first aspect of the embodiment, each of the channels is further provided with a bypass switch, each of the bypass switches is connected in parallel with the corresponding channel, and the tool control module controls the target channel to be in the short-circuit state according to the short-circuit instruction, including:

[0033] The tool control module controls the bypass switch corresponding to the target channel to be in a closed state according to the short-circuit instruction, so that the target channel is in the short-circuit state.

[0034] As an optional implementation, in the first aspect of the embodiment, the calibration detection device includes a current collection device and a test table, two ends of the current collection device are connected with the first series unit and the second series unit respectively, the current collection device is connected with the tool control module through the test table, the tool control module receives the first constant-voltage discharge instruction, controls the second power supply to be in a constant-voltage discharge state according to the first constant-voltage discharge instruction, and obtains a discharge current value of the first power supply group and a charging current value of the second power supply, including:

[0035] The tool control module receives the first constant-voltage discharge instruction, controls the second power supply to be in a constant-voltage discharge state according to the first constant-voltage discharge instruction, and the first power supply and the second power supply form a channel;

[0036] The current collection device collects the current in the channel, and the test table measures the value of the current, which is the charging current of the first power supply group and the discharge current of the second power supply group.

[0037] As an optional implementation, in the first aspect of the embodiment, the second test instruction includes a second constant-voltage discharge instruction and a second constant-voltage charging instruction, the tool control module receives the second test instruction, controls the first power supply to be in a constant-voltage discharge state and controls the second power supply to be in a constant-voltage charging state according to the second test instruction, obtains a charging current value of the first power supply group and a discharge current value of the second power supply group, including:

[0038] The tool control module receives the second constant voltage discharge instruction, obtains second sampling voltages of each of the channels in the first series unit and the second series unit under the condition that the first power supply is controlled to be in the constant voltage discharge state according to the second constant voltage discharge instruction, and reports the second sampling voltages of each of the channels to the upper computer;

[0039] The upper computer judges whether each of the channels is in a normal state according to whether the second sampling voltage of each of the channels is a corresponding preset voltage value, and sends the second constant voltage charging instruction under the condition that each of the channels is in the normal state,

[0040] The tool control module receives the second constant voltage charging instruction, controls the second power supply to be in a constant voltage charging state according to the second constant voltage charging instruction, and obtains a discharge current value of the first power supply group and a charging current value of the second power supply group.

[0041] A second aspect of the embodiment of the application discloses a power supply calibration system, the power supply calibration system comprising a power supply calibration tool and an upper computer, the power supply calibration tool comprising a first series unit, a second series unit, a sampling resistor and a calibration detection device, each of the series units being composed of a plurality of channels in series, each of the channels being connected with one power supply, each of the channels being connected with one sampling resistor in parallel, the calibration detection device being connected with the first series unit and the second series unit respectively, and the first series unit and the second series unit being connected in parallel through the calibration detection device, wherein:

[0042] The upper computer is configured to send a setting instruction to the power supply calibration tool, and to send a first test instruction and a second test instruction to the power supply calibration tool, the first test instruction being configured to control the first power supply to be in a constant voltage charging state and to control the second power supply to be in a constant voltage discharge state, the second test instruction being configured to control the first power supply to be in a constant voltage discharge state and to control the second power supply to be in a constant voltage charging state, and the upper computer is further configured to obtain and send a first calibration coefficient to each power supply in the first power supply group and to obtain and send a second calibration coefficient to each power supply in the second power supply group according to a current true value of the first power supply group, a current true value of the second power supply group and a corresponding sampling current value, the sampling current value being obtained through the sampling resistor;

[0043] The power supply calibration tool is used for controlling one of the channels of the first series unit as a first channel and controlling one of the channels of the second series unit as a second channel according to the setting instruction, the power supply connected to the first channel is a first power supply, the power supply connected to the second channel is a second power supply, and is used for acquiring current true values of the first power supply group and current true values of the second power supply group according to the first test instruction and the second test instruction, and sending the current true values of the first power supply group and the current true values of the second power supply group to the upper computer, the first power supply group is all the power supplies connected to the channels of the first series unit, and the second power supply group is all the power supplies connected to the channels of the second series unit; each power supply in the first power supply group is calibrated in charging current and discharging current accuracy according to the first calibration coefficient, and each power supply in the second power supply group is calibrated in charging current and discharging current accuracy according to the second calibration coefficient.

[0044] A third aspect of the embodiments of the present application discloses an electronic device, comprising a memory and a processor, the memory stores a computer program capable of running on the processor, and when the processor executes the computer program, the calibration method executed by the upper computer or the power supply calibration tool is implemented.

[0045] Compared with the related art, the embodiments of the present application at least have the following beneficial effects:

[0046] The parallel formation and capacity equipment series mode calibration method disclosed by the embodiments of the present application is applied to a power supply calibration system, mainly sends setting instructions and test instructions through an upper computer, selects two charging channels from a parallel first and second series unit respectively, charges through two channels in the two series units, and a current true value is acquired by a calibration detection device, the upper computer calculates a calibration coefficient according to the current true value and a sampling current value, and the power supply connected to each channel is calibrated in charging and discharging current accuracy according to the calibration coefficient. The calibration mode of the channel series is adopted in the method, the calibration is performed after the multiple channels are connected in series, the number of required calibration detection units is significantly reduced, the cost is effectively reduced, the time required for calibration is greatly shortened, and the consistency of the power supply output current accuracy is improved due to the use of fewer calibration detection devices. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0048] Figure 1 A flow chart of a parallel formation and component storage equipment series mode calibration method provided by an embodiment of the present application;

[0049] Figure 2 A structural schematic diagram of a power calibration system disclosed by an embodiment of the present application;

[0050] Figure 3 A structural schematic diagram of another power calibration system disclosed by an embodiment of the present application;

[0051] Figure 4 A flow chart of another parallel formation and component storage equipment series mode calibration method disclosed by an embodiment of the present application;

[0052] Figure 5 A flow chart of another parallel formation and component storage equipment series mode calibration method disclosed by an embodiment of the present application;

[0053] Figure 6 A flow chart of another parallel formation and component storage equipment series mode calibration method disclosed by an embodiment of the present application;

[0054] Figure 7 A flow chart of a host computer judging whether each channel is in a normal state disclosed by an embodiment of the present application;

[0055] Figure 8 A channel internal structure schematic diagram disclosed by an embodiment of the present application;

[0056] Figure 9 A structural schematic diagram of a power calibration tool disclosed by an embodiment of the present application;

[0057] Figure 10 A flow chart of obtaining current in a series loop disclosed by an embodiment of the present application;

[0058] Figure 11 A flow chart of another obtaining current in a series loop disclosed by an embodiment of the present application. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0060] It should be noted that the terms "first", "second", "third" in the embodiments of the present application are used to distinguish similar or different objects, and do not represent a specific order of the objects. Understandably, "first", "second", "third" can be interchanged in a specific order or sequence as allowed, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0061] It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of the present application and the accompanying drawings are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units not listed, or optionally includes other steps or units inherent to the process, method, product or device.

[0062] In modern electronic devices, the calibration of the formed and distributed power supply is crucial to ensure the performance and reliability of the device. Currently, the commonly used calibration method is the two-channel offset calibration method. In this calibration tool, a calibration detection unit is usually composed of multiple channels and a calibration detection device. Specifically, this calibration mechanism relies on the switching of relays to switch the channels that need to be calibrated. The advantage of this method is that it can reduce the use cost of individual calibration devices by concentrating resources, and when the number of channels is not large, it can effectively ensure the accuracy of calibration. However, when the number of channels increases significantly, the calibration efficiency is significantly reduced. This is because each channel must be switched and calibrated in sequence during calibration, resulting in a significant increase in overall calibration time. This can become a bottleneck on high-capacity production lines, affecting production efficiency.

[0063] To solve this problem, the prior art usually selects more calibration detection units, which inevitably increases multiple calibration detection devices to shorten the calibration time. Although this approach improves calibration efficiency in the short term, it also brings many potential problems. First, increasing multiple calibration detection devices will inevitably lead to an increase in production costs, including not only the purchase cost of the equipment itself, but also the subsequent maintenance and management costs. In addition, due to the manufacturing tolerances and differences in the use environment between multiple calibration detection devices, the current collection accuracy of each element may also be different. This difference will directly affect the output current accuracy of the power supply after calibration, causing consistency deviation between power supplies. This consistency problem not only affects the quality and reliability of the product, but also makes the subsequent debugging and testing work more complex. Ultimately, this not only increases the operating costs of the enterprise, but also may have an adverse impact in market competition, damaging the brand image and market share of the enterprise.

[0064] The parallel formation and capacity equipment series mode calibration method disclosed by the embodiment of the application is applied to a power supply calibration system, mainly sends setting instructions and test instructions through an upper computer, selects two charging channels from the first and second series units in parallel, charges through the two channels in the two series units, and the calibration detection device obtains the current true value; the upper computer calculates the calibration coefficient according to the current true value and the sampling current value, and the power supply connected to each channel calibrates the charging and discharging current according to the calibration coefficient. The calibration mode of the channel series is adopted in the method, the calibration is performed after the multiple channels are connected in series, the number of calibration detection units required is significantly reduced, the cost is effectively reduced, the time required for calibration is greatly shortened, and the consistency of the power supply output current precision is improved due to the use of fewer calibration detection devices. The following will be described in detail.

[0065] The application of the parallel formation and capacity equipment series mode calibration method disclosed by the application is very wide, including but not limited to the consumer electronics field, the industrial automation field and the aerospace field.

[0066] In the consumer electronics field, with the popularity of smart phones, tablet computers and wearable devices, the stability and accuracy of the power supply are particularly important. The method can ensure that these devices provide consistent voltage and current when charging and running, thereby prolonging the battery life and improving the user experience; in the industrial automation field, by regularly calibrating the power supply through the method, enterprises can ensure that the equipment can still operate stably under high load, reduce the failure rate, and thus reduce the production downtime. For example, sensors, drivers and controllers on the automated production line all rely on stable power supply, the method can detect and adjust the power output to meet the needs of different devices, thereby improving the overall production efficiency; in the aerospace field, electronic devices in aircraft and spacecraft must work reliably under extreme environmental conditions, and any power supply fluctuation may affect flight safety. By implementing a strict power calibration procedure through the method, it can be ensured that all systems can operate normally at critical moments, thereby ensuring the success of the flight mission; in the medical device field, the method can ensure that medical devices always operate in the best state, ensuring patient safety and health.

[0067] Please refer to Figure 1 , Figure 1This is a flow chart of a method for calibrating a series mode of a parallelized component capacity device provided in an embodiment of the present application. The method is applied to a power supply calibration system, wherein the power supply calibration system includes a power supply calibration tool and a host computer. The power supply calibration tool includes a first series unit, a second series unit, a sampling resistor, and a calibration detection device. Each of the series units is composed of a plurality of channels in series, each of the channels is connected to a power supply, and each of the channels is connected in parallel with a sampling resistor. The calibration detection device is respectively connected to the first series unit and the second series unit, and the first series unit and the second series unit are connected in parallel through the calibration detection device. For a clearer introduction to the method flow, please refer to Figure 2 , Figure 2 This is a structural schematic diagram of a power calibration system disclosed in an embodiment of the present application, including a host computer 11, a power calibration tool 12, a first series unit 131, a second series unit 132, a first channel 141, a second channel 142, a calibration detection device 15 and a sampling resistor 16, wherein the power calibration tool 12 is connected to the host computer 11, the power calibration tool 12 includes a first series unit 131, a second series unit 132 and a calibration detection device 15, the first series unit 131 includes a first channel 141, the second series unit 132 includes a second channel 142, the calibration detection device 15 is connected to the first series unit 131 and the second series unit 132 respectively, the first series unit 131 and the second series unit 132 are connected in parallel through the calibration detection device 15, each channel includes a sampling resistor 16, when current passes through the channel, each power supply connected to the channel can obtain its own sampled current value according to the sampling resistor 16.

[0068] Among them, the host computer 11 is the core group of control and management, which is mainly used for interacting with users, collecting data, displaying real-time status, and performing system configuration and parameter settings. The host computer generally communicates with other devices through communication protocols, and the communication protocols used include but are not limited to Controller Area Network (CAN), Recommended Standard 485 (RS485) and Transmission Control Protocol / Internet Protocol (TCP / IP).

[0069] The functions of the upper computer include but are not limited to data monitoring and display, fault diagnosis and alarm, system configuration and parameter adjustment, and data recording and analysis. Among them, data monitoring and display refers to that the upper computer obtains various data of the battery pack, such as voltage data, temperature data, current data and state of charge (SOC) through communication with other calibration and detection devices, and displays these data in real time to the user through a graphical interface, so that the user can monitor in real time through the upper computer to ensure that the battery pack operates within a safe range; fault diagnosis and alarm refers to that the upper computer can receive alarm information from other calibration and detection devices, and notify the user through the interface to indicate potential fault points, helping the user to take timely measures, for example, if the temperature of the battery is too high, the voltage is abnormal, etc., the system will issue an alarm through the upper computer; system configuration and parameter adjustment refers to that the upper computer allows the user to configure the battery calibration system, such as setting the charging range, discharging range, temperature limit of the battery. Through these settings, the user can adjust the working state of the battery pack according to actual needs; data recording and analysis refers to that the upper computer can record the working data of the battery in real time and generate reports for subsequent analysis, which plays an important role in evaluating the health status, service life of the battery and formulating maintenance plan.

[0070] The power calibration tool is an important hardware part of realizing power calibration, and its design and structure directly affect the accuracy and reliability of the calibration result. The tool usually integrates a variety of high-precision measuring instruments for real-time monitoring of output voltage, current, power and waveform parameters of the calibrated power supply. Through accurate measurement equipment, the calibration tool can provide accurate reference standards for comparison with the measured power supply to evaluate whether its performance meets industry standards and technical specifications. The interface design of the power calibration tool is also very important, usually using standardized connection methods to adapt to different models and specifications of power supply equipment to ensure wide compatibility, such as bayonet connection, plug socket, threaded connection, etc., but not limited to this, which can be selected according to actual needs. Among them, the bayonet connection is usually used for quick connection and disassembly, has good anti-vibration ability, and allows automatic alignment within a certain range, simplifying the installation process and suitable for frequent replacement occasions; plug socket connection is commonly used in electrical and electronic equipment, with the advantages of simple operation, easy connection and disconnection, and they are usually designed to prevent misplug and ensure good contact, suitable for devices that need regular maintenance or replacement; threaded connection fastens two components by rotating, providing strong mechanical strength and sealing, suitable for applications that need to withstand relatively large force or pressure, but installation and disassembly are relatively slow, usually used for fixed connection occasions.

[0071] Please refer to Figure 1 and Figure 2 The flowchart of the parallel formation and component distribution equipment series mode calibration method at least includes the following steps S101-S103:

[0072] Step S101: The host computer 11 sends a setting instruction to the power calibration tool 12;

[0073] Step S102: The power calibration tool 12 controls one of the channels of the first series unit 131 as the first channel 141 and controls one of the channels of the second series unit 131 as the second channel 142 according to the setting instruction; wherein the power connected by the first channel 141 is the first power, and the power connected by the second channel 142 is the second power;

[0074] Step S103: The host computer 11 sends a first test instruction and a second test instruction to the power calibration tool 12;

[0075] The first test instruction is used to control the first power to be in a constant voltage charging state and to control the second power to be in a constant voltage discharging state, and the second test instruction is used to control the first power to be in a constant voltage discharging state and to control the second power to be in a constant voltage charging state;

[0076] The constant voltage charging state and the constant voltage discharging state are two important modes in the process of battery charging and discharging.

[0077] Constant voltage charging refers to that the power maintains the voltage of its battery at a constant level to charge other batteries. As the state of charge of the charged battery improves, the charging current of the power battery gradually decreases, which can effectively prevent overcharging, protect the battery life, and ensure the safety of battery charging.

[0078] Constant voltage discharging refers to that the power of the battery provides a stable voltage for the load. This mode can ensure that the battery can continuously provide a stable voltage when the load changes, which is very important for some voltage-sensitive applications and helps to maintain the normal operation of the equipment and avoid failures caused by voltage fluctuations.

[0079] In the embodiment, the first test instruction is used to control the first power supply to be in a constant voltage charging state and to control the second power supply to be in a constant voltage discharging state, that is, the first power supply serves as a charging power supply, and maintains a constant charging voltage level, the first power supply itself is in a state of charging the second power supply, the second power supply is in a constant voltage discharging state, which means that the second power supply discharges to provide a stable voltage for the first power supply, at this time, the two power supplies form a charging pair in the two series units, if there are only two power supplies in the entire loop, that is, the first power supply and the second power supply, the measured loop current is the charging current of the first power supply and the discharging current of the second power supply, if there are multiple channels connecting multiple power supplies in the first series unit, the multiple power supplies are referred to as a first power supply group, and there are multiple channels connecting multiple power supplies in the second series unit, the multiple power supplies are referred to as a second power supply group, and the measured loop current is the charging current of the first power supply group and the discharging current of the second power supply group.

[0080] Optionally, there are many types of power supplies, and the formed and distributed power supply is commonly used in the formation and distribution process of lithium ion batteries, and can be selected according to actual needs, for example, a programmable power supply, a multi-channel power supply, and an intelligent power supply, but not limited thereto, wherein the programmable power supply can be set according to a specific charging curve and requirements to adapt to the needs of different types of batteries; the multi-channel power supply can simultaneously charge and distribute multiple batteries to improve production efficiency; the intelligent power supply has real-time monitoring and data recording functions, and can provide more accurate charging and discharging control.

[0081] In step S104, the power supply calibration tool 12 acquires the current true value of the first power supply group and the current true value of the second power supply group according to the first test instruction and the second test instruction, and sends the current true value of the first power supply group and the current true value of the second power supply group to the upper computer;

[0082] The current true value includes a charging current value and a discharging current value, the first power supply group is the power supply connected by all the channels of the first series unit, and the second power supply group is the power supply connected by all the channels of the second series unit.

[0083] In step S105, the upper computer 11 acquires and sends a first calibration coefficient to each power supply in the first power supply group and a second calibration coefficient to each power supply in the second power supply group according to the current true value of the first power supply group, the current true value of the second power supply group, and the corresponding sampling current value.

[0084] In the case that there is a current in the loop formed by the first series unit and the second series unit, the sampling current value corresponding to each power supply can be obtained according to the sampling resistor.

[0085] Step S106: Each power supply in the first power supply group performs charging current accuracy or discharging current calibration according to the first calibration coefficient, and each power supply in the second power supply group performs discharging current accuracy or charging current accuracy calibration according to the second calibration coefficient.

[0086] In some embodiments, the calculation step of the calibration coefficient generally includes but is not limited to collecting data, calculating deviation, calculating average deviation, and calculating calibration coefficient, etc., wherein collecting data refers to taking multiple measurements, recording current true value and preset value; calculating deviation refers to, for each measurement, deviation = current true value - preset value; calculating average deviation refers to adding all deviations and dividing by the number of measurements to obtain the average deviation; calculating the calibration coefficient refers to the ratio of the sum of the preset value and the average deviation to the actual value.

[0087] In some embodiments, the power supply calibration tool further comprises a tool control module connected with the host computer and the calibration detection device, respectively, please refer to Figure 3 , Figure 3 Another structure diagram of the power supply calibration system disclosed in the embodiment of the present application, comprising a host computer 21, a power supply calibration tool 22, a first series unit 231, a second series unit 232, a first channel 241, a second channel 242, a calibration detection device 25, a tool control module 26 and a sampling resistor 27, wherein the power supply calibration tool 22 is connected with the host computer 21 through the tool control module 26, the power supply calibration tool 22 comprises the first series unit 231, the second series unit 232 and the calibration detection device 25, the first series unit 231 comprises the first channel 241, the second series unit 232 comprises the second channel 242, the calibration detection device 25 is connected with the first series unit 231 and the second series unit 232 respectively, the first series unit 231 and the second series unit 232 are connected in parallel through the calibration detection device 25, the tool control module 26 is connected with the host computer 21 and the calibration detection device 25 respectively, and each channel contains a sampling resistor 27, when current passes through the channel, each power supply connected with the channel can obtain its own sampling current value according to the sampling resistor 27.

[0088] The tool control module receives the instruction of the host computer and controls the power supply calibration tool according to the instruction of the host computer, aiming at Figure 1 In step S104 of the first parallel formation and component equipment calibration tool, the current true value of the first power supply group includes the discharging current true value of the first power supply group and the charging current true value of the first power supply group, and the current true value of the second power supply group includes the discharging current true value of the second power supply group and the charging current true value of the second power supply group.

[0089] For more detailed introduction of step S204, please refer toFigure 3 and Figure 4 , Figure 4 The flowchart of another parallel component container equipment series mode calibration method provided by the embodiment of the application comprises at least the following steps S201-S207:

[0090] Step S201: The upper computer 21 sends a setting instruction to the tooling control module 26.

[0091] Step S202: The tooling control module 26 controls one of the channels of the first series unit 231 as the first channel 241 and controls one of the channels of the second series unit 231 as the second channel 242 according to the setting instruction; wherein the power supply connected to the first channel 241 is the first power supply, and the power supply connected to the second channel 242 is the second power supply.

[0092] Step S103: The upper computer 21 sends a first test instruction and a second test instruction to the tooling control module 26.

[0093] Step S204: The tooling control module 26 receives the first test instruction, controls the first power supply to be in a constant-voltage charging state and controls the second power supply to be in a constant-voltage discharging state according to the first test instruction, obtains the charging current value of the first power supply group and the discharging current value of the second power supply group, and sends the charging current value of the first power supply group and the discharging current value of the second power supply group to the upper computer.

[0094] Step S205: The tooling control module 26 receives the second test instruction, controls the first power supply to be in a constant-voltage discharging state and controls the second power supply to be in a constant-voltage charging state according to the second test instruction, obtains the discharging current value of the first power supply group and the charging current value of the second power supply group, and sends the discharging current value of the first power supply group and the charging current value of the second power supply group to the upper computer.

[0095] The order of step S204 and step S205 can be exchanged, that is, the tooling control module can first receive the second test instruction, control the first power supply to be in a constant-voltage discharging state and control the second power supply to be in a constant-voltage charging state, then receive the first test instruction, control the first power supply to be in a constant-voltage charging state and control the second power supply to be in a constant-voltage discharging state, which is not specifically limited herein.

[0096] Step S206: The host computer 11 obtains and sends a first calibration coefficient to each power supply in the first power supply group and a second calibration coefficient to each power supply in the second power supply group according to the current true value of the first power supply group, the current true value of the second power supply group, and the corresponding sampling current value.

[0097] In the case of current in the loop formed by the first series unit and the second series unit, the sampling current value corresponding to each power supply can be obtained according to the sampling resistor.

[0098] Step S207: Each power supply in the first power supply group performs charging current accuracy or discharging current calibration according to the first calibration coefficient, and each power supply in the second power supply group performs discharging current accuracy or charging current accuracy calibration according to the second calibration coefficient.

[0099] In some embodiments, for Figure 4 In step S204 of the parallel component filling device series mode calibration method, the first test instruction includes a first constant voltage charging instruction and a first constant voltage discharging instruction. The tool control module receives the first test instruction, controls the first power supply to be in a constant voltage charging state and controls the second power supply to be in a constant voltage discharging state according to the first test instruction, obtains the charging current value of the first power supply group, and obtains the discharging current value of the second power supply group. For a more detailed introduction to step S204, please refer to Figure 3 and Figure 5 , Figure 5 Another parallel component filling device series mode calibration method provided by the embodiments of the present application is provided, and the flowchart of the parallel component filling device series mode calibration method includes at least the following steps S301-S307:

[0100] Step S301: The host computer 21 sends a setting instruction to the tool control module 26. The tool control module 26 controls one of the channels of the first series unit 231 as the first channel 241 and controls one of the channels of the second series unit 231 as the second channel 242 according to the setting instruction. The host computer 21 sends a first test instruction and a second test instruction to the tool control module 26.

[0101] The first test instruction includes a first constant voltage charging instruction and a first constant voltage discharging instruction.

[0102] Step S302: The tooling control module 26 receives the first constant voltage charging instruction, obtains the first sampling voltage of each channel in the first series unit 231 and the second series unit 232 when the first constant voltage charging instruction controls the first power supply to be in the constant voltage charging state, and reports the first sampling voltage of each channel to the upper computer;

[0103] The first sampling voltage is a battery voltage sampling. As long as the first power supply is turned on, the power supply in the two series units will collect and automatically upload in real time.

[0104] Step S303: The upper computer 21 determines whether each channel is in a normal state according to whether the first sampling voltage of each channel is a corresponding preset voltage value.

[0105] Step S304: The first constant voltage discharge instruction is sent when each channel is in a normal state.

[0106] The preset voltage value is a standard voltage value set by the upper computer, which can be set according to actual needs.

[0107] Step S305: The tooling control module 26 receives the first constant voltage discharge instruction, controls the second power supply to be in the constant voltage discharge state according to the first constant voltage discharge instruction, and obtains the charging current value of the first power supply group and the discharging current value of the second power supply group.

[0108] Step S306: The tooling control module 26 receives the second test instruction, controls the first power supply to be in the constant voltage discharge state and controls the second power supply to be in the constant voltage charging state according to the second test instruction, obtains the discharging current value of the first power supply group and the charging current value of the second power supply group, and sends the discharging current value of the first power supply group and the charging current value of the second power supply group to the upper computer.

[0109] Step S307: The upper computer 11 obtains and sends a first calibration coefficient to each power supply in the first power supply group and a second calibration coefficient to each power supply in the second power supply group according to the current true value of the first power supply group, the current true value of the second power supply group, and the corresponding sampling current value. Each power supply in the first power supply group performs charging current accuracy or discharging current calibration according to the first calibration coefficient, and each power supply in the second power supply group performs discharging current accuracy or charging current accuracy calibration according to the second calibration coefficient.

[0110] Optionally, step S204 and step S205 can be exchanged in order, and step S205 is before step S204, which is not limited here.

[0111] Exemplarily, step S205 can be: first, the tooling control module 26 receives a constant voltage discharge instruction, obtains the first sampling voltage of each of the channels in the first series unit 231 and the second series unit 232 under the condition that the first power supply is in a constant voltage discharge state according to the constant voltage discharge instruction, and reports the first sampling voltage of each of the channels to the upper computer; second, the upper computer 21 judges whether each channel is in a normal state according to whether the sampling voltage of each of the channels is a corresponding preset voltage value, and sends a constant voltage charging instruction in the case that each channel is in the normal state; and finally, the tooling control module 26 receives the constant voltage charging instruction, controls the second power supply to be in a constant voltage charging state according to the constant voltage charging instruction, and obtains the discharge current value of the first power supply group and the charging current value of the second power supply group.

[0112] In some embodiments, for step S303 in Figure 5 , in the case that the target channel is in an abnormal state, a short circuit instruction is sent, the short circuit instruction is used to indicate that the target channel is in a short circuit state, therefore, for more detailed introduction of step S204 in Figure 3 , please refer to Figure 3 and Figure 6 , Figure 6 The flowchart of another series mode calibration method of parallel battery formation and component distribution equipment provided by the embodiments of the present application comprises at least the following steps S401-S409:

[0113] Step S401: the upper computer 21 sends a setting instruction to the tooling control module 26, the tooling control module 26 controls one of the channels of the first series unit 231 as a first channel 241 and controls one of the channels of the second series unit 232 as a second channel 242 according to the setting instruction, and the upper computer 21 sends a first test instruction and a second test instruction to the tooling control module 26;

[0114] The first test instruction comprises a first constant voltage charging instruction and a first constant voltage discharge instruction, the tooling control module receives the first test instruction, controls the first power supply to be in a constant voltage charging state and controls the second power supply to be in a constant voltage discharge state according to the first test instruction, obtains the charging current value of the first power supply group, and obtains the discharge current value of the second power supply group.

[0115] Step S402: The tooling control module 26 receives the first constant voltage charging instruction, obtains the first sampling voltage of each channel in the first series unit 231 and the second series unit 232 when the first constant voltage charging instruction controls the first power supply to be in the constant voltage charging state, and reports the first sampling voltage of each channel to the upper computer 21;

[0116] Step S403: The upper computer 21 determines whether each channel is in a normal state according to whether the sampling voltage of each channel is a corresponding preset voltage value.

[0117] Step S404: In a case where it is determined that the target channel is in an abnormal state, a short-circuit instruction is sent.

[0118] The short-circuit instruction is used to indicate that the target channel is in a short-circuit state.

[0119] Step S405: The tooling control module 26 controls the target channel to be in the short-circuit state according to the short-circuit instruction.

[0120] Step S406: The upper computer 21 sends the first constant voltage discharging instruction.

[0121] Step S407: The tooling control module 26 receives the first constant voltage discharging instruction, controls the second power supply to be in the constant voltage discharging state according to the first constant voltage discharging instruction, and obtains the charging current value of the first power supply group and the discharging current value of the second power supply group.

[0122] Step S408: The tooling control module 26 receives the second test instruction, controls the first power supply to be in the constant voltage discharging state and controls the second power supply to be in the constant voltage charging state according to the second test instruction, obtains the discharging current value of the first power supply group and the charging current value of the second power supply group, and sends the discharging current value of the first power supply group and the charging current value of the second power supply group to the upper computer 21.

[0123] Step S409: The upper computer 11 obtains and sends a first calibration coefficient to each power supply in the first power supply group and obtains and sends a second calibration coefficient to each power supply in the second power supply group according to the current true value of the first power supply group, the current true value of the second power supply group, and the corresponding sampling current value. Each power supply in the first power supply group performs charging current accuracy or discharging current calibration according to the first calibration coefficient, and each power supply in the second power supply group performs discharging current accuracy or charging current accuracy calibration according to the second calibration coefficient.

[0124] Optionally, the step S204 and the step S205 can be exchanged in order, and the step S205 is prior to the step S204, which is not limited specifically herein.

[0125] Exemplarily, the step S205 can be: firstly, the tooling control module receives a constant voltage discharge instruction, and according to the constant voltage discharge instruction, the first sampling voltage of each channel in the first series unit and the second series unit is obtained by battery voltage sampling in the case that the first power supply is in a constant voltage discharge state, and the first sampling voltage of each channel is reported to the upper computer;

[0126] Secondly, the upper computer judges whether each channel is in a normal state according to whether the sampling voltage of each channel is a corresponding preset voltage value, and in the case that the target channel is in an abnormal state, a short circuit instruction is sent, the short circuit instruction is used to indicate that the target channel is in a short circuit state, and the tooling control module controls the target channel to be in the short circuit state according to the short circuit instruction;

[0127] Finally, the upper computer sends the constant voltage charging instruction, and the tooling control module receives the constant voltage charging instruction, and according to the constant voltage charging instruction, the discharge current value of the first power supply group and the charging current value of the second power supply group are obtained in the case that the second power supply is in a constant voltage charging state.

[0128] In some embodiments, for Figure 5 In the step S303 in the flowchart of the third parallelization formation and component equipment series mode calibration method, the upper computer judges whether each channel is in a normal state according to whether the first sampling voltage of each channel is a corresponding preset voltage value, which includes the following steps, please refer to Figure 7 , Figure 7 A flowchart of the upper computer judging whether each channel is in a normal state provided by the embodiment of the present application, the flowchart of the upper computer judging whether each channel is in a normal state includes at least the following steps S501-S504:

[0129] Step S501: judging whether the first sampling voltage of the first channel corresponding to the first power supply and the second channel corresponding to the second power supply is a first preset voltage value, and obtaining a first judgment result;

[0130] Step S502: judging whether the first sampling voltage of other channels except the first channel and the second channel is a second preset voltage value, and obtaining a second judgment result, the second preset voltage value is less than the first preset voltage value;

[0131] Step S503: In the case that the first judgment result and the second judgment result are both yes, it is judged that each of the channels is in a normal state.

[0132] Step S504: In the case that the first sampling voltage of the target channel other than the first channel and the second channel is not the second preset voltage value, it is determined that the target channel is in an abnormal state.

[0133] It can be understood that when the target channel is in an abnormal state, such as the case where the power supply is not installed or the power supply is damaged, but not limited thereto, since the first series unit and the second series unit are connected in parallel, the first channel in the first series unit is in a constant voltage charging or constant voltage discharging state, if no channel is in an abnormal state, only the first channel and the second channel can detect the sampling voltage, if a channel is in an abnormal state, the entire series unit will be open circuit, the target channel can also detect the voltage, and the open circuit voltage is generally greater than the preset voltage. After the first channel is given a constant voltage charging or constant voltage discharging under the host computer, it is judged whether all channels in the series loop can detect the sampling voltage, which can enhance the system to avoid the failure of the entire system due to the abnormality of a single channel, the system can timely identify and take measures to reduce the risk of failure or safety accident, and also can make the host computer quickly locate to the specific series unit or channel, facilitating subsequent maintenance and repair.

[0134] In some embodiments, each of the channels is further provided with a switch tube, the switch tube is in an open state, and the sampling resistor of each of the channels is connected with the switch tube, Figure 8 A channel internal structure diagram disclosed by the embodiment of the present application includes a sampling resistor 41, a switch tube 42, a channel positive electrode 43, a channel negative electrode 44, the sampling resistor 41 is connected with the switch tube 42, the sampling resistor 41 is connected with the channel positive electrode 43 and the channel negative electrode 44 through the switch tube 42, and the switch tube is in an open state before receiving the setting instruction issued by the host computer.

[0135] Optionally, the switch tube has many types, which can be selected according to actual needs, such as a transistor, a field effect transistor, a metal oxide semiconductor field effect transistor, a junction field effect transistor, an insulated gate bipolar transistor, etc., but is not limited thereto.

[0136] The tool control module controls one of the channels of the first series unit as the first channel and controls one of the channels of the second series unit as the second channel according to the setting instruction, and the tool control module comprises the following steps:

[0137] The tool control module closes the switch tube of the first channel and the switch tube of the second channel according to the setting instruction, so that the sampling resistor of the first channel is connected with the positive electrode and the negative electrode of the first power supply, and the sampling resistor of the second channel is connected with the positive electrode and the negative electrode of the second power supply, so that in the case that the host computer issues a constant voltage charging instruction to the first channel or a constant voltage discharging instruction to the first channel, there is a current flowing through the first channel and the second channel in the series circuit, and the first channel and the second channel can obtain the sampling current value according to the sampling resistor.

[0138] In some embodiments, the host computer issues a setting instruction, selects one channel in the first series unit as the first channel, and the power supply in the first channel is the first power supply, selects one channel in the second series unit as the second channel, and the power supply in the second channel is the second power supply, in addition, other channels in the first series unit are also connected with power supplies, and other channels in the second series unit are also connected with power supplies, so that in addition to the sampling resistor in the first channel and the sampling resistor in the second channel being connected in series into the loop due to the closing of the switch tube, the sampling resistors in other channels are also connected in series into the loop, when the first channel and the second channel are selected as the hedging channels to execute the first test instruction and the second test instruction issued by the host computer, at this time, the sampling resistors in all channels have current passing through, and the power supplies connected to all selected channels can obtain the sampling current value according to the sampling resistor, that is, the power supplies connected to all channels can be calibrated at the same time. In this case, assuming that there are m channels in each calibration detection unit in the prior art, only two channels can be detected at a time in one calibration detection unit, so that m / 2 times are required to calibrate m channels in the present application, and m channels in the present application can be calibrated only once, so that the calibration time is reduced to 1 / (m / 2) times of the original, wherein " / " is a division sign.

[0139] In some embodiments, each channel is also provided with a bypass switch, and each bypass switch is connected in parallel to the corresponding channel, and the tool control module controls the target channel to be in the short circuit state according to the short circuit instruction.

[0140] In some embodiments, the calibration detection tool includes a current collection device and a test table for testing the current in the series circuit when the first channel and the second channel are connected.

[0141] Please refer to Figure 9 , Figure 9A structure schematic diagram of a power supply calibration tool disclosed by the embodiment of the present application, comprising a first series unit 51, a second series unit 52, a first channel 511, a second channel 521, a bypass switch 53, a calibration detection tool 54, a current collection device 541, a test table 542, and a tool control module 55, wherein the first series unit 51 comprises the first channel 511, the second series unit 52 comprises the second channel 521, two ends of the current collection device 541 are connected with the first series unit 51 and the second series unit 52 respectively, the current collection device 541 is connected with the tool control module 55 through the test table 542, comprising:

[0142] According to the short-circuit instruction, the tool control module 55 controls the bypass switch 53 corresponding to the target channel to be in a closed state, so that the target channel is in the short-circuit state.

[0143] Optionally, the bypass switch can be a single-pole single-throw switch, but is not limited thereto.

[0144] It can be understood that the single-pole single-throw switch is in a state that the host computer judges whether each channel is in an open state, and only in the case that the target channel is in an abnormal state, the host computer sends a short-circuit instruction to control the single-pole single-throw switch to be closed, so as to short-circuit the abnormal target channel, thereby avoiding the influence of the abnormal channel on the subsequent current test and avoiding the damage of the abnormal channel to the system, improving the test accuracy of the system, and improving the stability and safety of the system.

[0145] In some embodiments, steps S305 in Figure 5 and step S407 in Figure 6 : the tool control module receives the first constant voltage discharge instruction, controls the second power supply in a constant voltage discharge state according to the first constant voltage discharge instruction, and obtains the charging current value of the first power supply group and the discharging current value of the second power supply group. For more clearly explaining step S304 and step S406, please refer to Figure 9 , Figure 9 A flowchart for obtaining the current in the series circuit provided by the embodiment of the present application, comprising at least steps S601-S602:

[0146] Step S601: the tool control module receives the first constant voltage discharge instruction, controls the second power supply in a constant voltage discharge state according to the first constant voltage discharge instruction, and the first power supply and the second power supply form a path;

[0147] Step S602: acquiring the current in the passage by the current acquisition device, and measuring the value of the current by the test table. The value of the current is the charging current of the first power supply group and the discharging current of the second power supply group.

[0148] In some embodiments, Figure 5 Step S305 in the method, and Figure 6 Step S407 in the method: the second test instruction comprises a second constant-voltage discharging instruction and a second constant-voltage charging instruction, the tool control module receives the second test instruction, controls the first power supply to be in a constant-voltage discharging state and controls the second power supply to be in a constant-voltage charging state according to the second test instruction, and obtains the discharging current value of the first power supply group and the charging current value of the second power supply group. For a clearer explanation of step S305 and step S407, please refer to Figure 11 , Figure 11 The method for obtaining the current in the series circuit provided by the embodiments of the present application comprises steps S701-S702:

[0149] Step S701: the tool control module receives the second constant-voltage discharging instruction, obtains the second sampling voltage of each passage in the first series unit and the second series unit when the first power supply is controlled to be in a constant-voltage discharging state according to the second constant-voltage discharging instruction, and reports the second sampling voltage of each passage to the upper computer;

[0150] Step S702: the upper computer judges whether each passage is in a normal state according to whether the second sampling voltage of each passage is a corresponding preset voltage value, and sends the second constant-voltage charging instruction when each passage is in the normal state;

[0151] Step S703: the tool control module receives the second constant-voltage charging instruction, controls the second power supply to be in a constant-voltage charging state according to the second constant-voltage charging instruction, and the first power supply and the second power supply form a passage;

[0152] Step S704: acquiring the current in the passage by the current acquisition device, and measuring the value of the current by the test table. The value of the current is the discharging current value of the first power supply group and the charging current value of the second power supply group.

[0153] For a clearer explanation of the method, please refer to Figure 2The power supply calibration tool 12 is connected with the upper computer 11, and comprises the first series unit 131, the second series unit 132, the first channel 141, the second channel 142 and the calibration detection device 15. The first series unit 131 comprises the first channel 141, the second series unit 132 comprises the second channel 142, and the calibration detection device 15 is connected with the first series unit 131 and the second series unit 132 respectively.

[0154] The upper computer 11 is configured to send a setting instruction to the power supply calibration tool 12, send a first test instruction to the power supply calibration tool 12, and send a second test instruction to the power supply calibration tool 12. The first test instruction is configured to control the first power supply to be in a constant voltage charging state and control the second power supply to be in a constant voltage discharging state. The second test instruction is configured to control the first power supply to be in a constant voltage discharging state and control the second power supply to be in a constant voltage charging state. The upper computer 11 is further configured to obtain a first calibration coefficient according to a current true value of the first power supply group, a current true value of the second power supply group and a corresponding sampling current value, and send the first calibration coefficient to each power supply in the first power supply group. The upper computer 11 is further configured to obtain a second calibration coefficient according to the current true value of the first power supply group, the current true value of the second power supply group and the corresponding sampling current value, and send the second calibration coefficient to each power supply in the second power supply group. The sampling current value is obtained through the sampling resistor.

[0155] The power supply calibration tool 12 is configured to control one of the channels of the first series unit 131 as the first channel 141 and control one of the channels of the second series unit 132 as the second channel 142 according to the setting instruction. The power supply connected with the first channel 141 is the first power supply, and the power supply connected with the second channel 142 is the second power supply. The power supply calibration tool 12 is further configured to obtain a current true value of the first power supply group and a current true value of the second power supply group according to the first test instruction and the second test instruction, and send the current true value of the first power supply group and the current true value of the second power supply group to the upper computer. The first power supply group comprises all the power supplies connected with the channels of the first series unit, and the second power supply group comprises all the power supplies connected with the channels of the second series unit. Each power supply in the first power supply group is calibrated in charging current and discharging current accuracy according to the first calibration coefficient, and each power supply in the second power supply group is calibrated in charging current and discharging current accuracy according to the second calibration coefficient.

[0156] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware, and the program can be stored in a non-volatile computer readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiment methods. The storage medium can be a magnetic disc, an optical disc, a ROM, etc.

[0157] As used herein, any reference to memory, storage, a database or other medium can include non-volatile and / or volatile memory. Suitable non-volatile memory can include ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM), which is used as external cache memory. By way of illustration, and not limitation, RAM can be provided in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), Rambus DRAM (RDRAM), and direct Rambus dynamic RAM (DRDRAM).

[0158] It should be understood that any references to “one embodiment” or “an embodiment” or “an implementation” or “one implementation” or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrases “in one embodiment” or “in an embodiment” or the like in various places in the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It will also be appreciated by those of skill in the art that references to the application of the application throughout this specification are intended to refer to the application as a whole, and not to one in particular embodiment.

[0159] In various embodiments of the present application, it should be understood that the magnitude of the sequence number of the above processes does not mean the inevitable sequence of execution, and the execution sequence of the processes should be determined according to their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0160] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e. they may be located in one place, or distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0161] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0162] The term "and / or" herein is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, object A and / or object B, which can represent the three cases of existence of object A alone, existence of object A and object B, and existence of object B alone.

[0163] It should be noted that in this paper, the term "includes", "contains" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "includes a…" does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0164] The methods disclosed in the several method embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments.

[0165] The features disclosed in the several product embodiments provided by the present application can be combined arbitrarily without conflict to obtain new product embodiments.

[0166] The features disclosed in the several method or device embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments or device embodiments.

[0167] The device insertion detection circuit disclosed in the embodiments of the present application is described in detail, and the principles and implementation manners of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the above description should not be understood as a limitation on the present application.

Claims

1. A method for calibrating a parallel-connected capacity-fractionating device in series mode, characterized in that: Applied to a power calibration system, the power calibration system includes a power calibration tool and a host computer, the power calibration tool includes a first series unit, a second series unit, a sampling resistor and a calibration detection device, each of the series units is composed of multiple channels in series, each of the channels is connected to a power supply, each of the channels is connected in parallel with a sampling resistor, the calibration detection device is respectively connected to the first series unit and the second series unit, the first series unit and the second series unit are connected in parallel through the calibration detection device, and the method includes: The host computer sends a setting instruction to the power calibration tool; The power calibration tool controls one of the channels of the first series unit as the first channel and controls one of the channels of the second series unit as the second channel according to the setting instruction, the power supply connected to the first channel is the first power supply, and the power supply connected to the second channel is the second power supply; The host computer sends a first test instruction and a second test instruction to the power supply calibration tool, wherein the first test instruction is used to control the first power supply to be in a constant voltage charging state and to control the second power supply to be in a constant voltage discharging state, and the second test instruction is used to control the first power supply to be in a constant voltage discharging state and to control the second power supply to be in a constant voltage charging state; The power calibration tool obtains the true current value of the first power supply group and the true current value of the second power supply group according to the first test instruction and the second test instruction, and sends the true current value of the first power supply group and the true current value of the second power supply group to the host computer, where the true current value includes a charging current value and a discharging current value. The first power supply group is the power supply connected to all the channels of the first series unit, and the second power supply group is the power supply connected to all the channels of the second series unit; The host computer obtains and sends a first calibration coefficient to each power supply in the first power supply group, and obtains and sends a second calibration coefficient to each power supply in the second power supply group according to the actual current value of the first power supply group, the actual current value of the second power supply group, and the corresponding sampled current value, wherein the sampled current value is obtained by the sampling resistor; Each power supply in the first power supply group is calibrated for charging current accuracy or discharging current accuracy according to the first calibration coefficient, and each power supply in the second power supply group is calibrated for discharging current accuracy or charging current accuracy according to the second calibration coefficient.

2. The method according to claim 1, wherein the power calibration tool further comprises a tool control module, wherein the tool control module is connected to the host computer and the calibration detection device respectively, The true current value of the first power supply group includes the true current value of the discharge current of the first power supply group and the true current value of the charging current of the first power supply group, and the true current value of the second power supply group includes the true current value of the discharge current of the second power supply group and the true current value of the charging current of the second power supply group. The power supply calibration tool obtains the true current value of the first power supply group and the true current value of the second power supply group according to the first test instruction and the second test instruction, including: The tooling control module receives the first test instruction, controls the first power supply to be in a constant voltage charging state and controls the second power supply to be in a constant voltage discharging state according to the first test instruction, obtains the charging current value of the first power supply group and obtains the discharging current value of the second power supply group; The tooling control module receives the second test instruction, controls the first power supply to be in a constant voltage discharge state and controls the second power supply to be in a constant voltage charge state according to the second test instruction, obtains the discharge current value of the first power supply group and obtains the charging current value of the second power supply group.

3. The method according to claim 2, characterized in that The first test instruction includes a first constant voltage charge instruction and a first constant voltage discharge instruction. The tooling control module receives the first test instruction, controls the first power supply to be in a constant voltage charge state and controls the second power supply to be in a constant voltage discharge state according to the first test instruction, obtains the charging current value of the first power supply group and obtains the discharging current value of the second power supply group, including: The tooling control module receives the first constant voltage charging instruction, controls the first power supply to be in a constant voltage charging state according to the first constant voltage charging instruction, obtains the first sampled voltage of each of the channels in the first series unit and the second series unit, and reports the first sampled voltage of each of the channels to the host computer; The host computer determines whether each of the channels is in a normal state according to whether the first sampled voltage of each of the channels is a corresponding preset voltage value, and sends the first constant voltage release instruction when each of the channels is in a normal state; The tooling control module receives the first constant voltage release instruction, controls the second power supply to be in a constant voltage release state according to the first constant voltage release instruction, and obtains the charging current value of the first power supply group and the discharging current value of the second power supply group.

4. The method according to claim 3, characterized in that The first test instruction includes a first constant voltage charge instruction and a first constant voltage discharge instruction. The tooling control module receives the first test instruction, controls the first power supply to be in a constant voltage charge state and controls the second power supply to be in a constant voltage discharge state according to the first test instruction, obtains a discharge current value of the first power supply, and obtains a charging current value of the second power supply, including: The tooling control module receives the first constant voltage charging instruction, controls the first power supply to be in a constant voltage charging state according to the first constant voltage charging instruction, obtains the first sampled voltage of each of the channels in the first series unit and the second series unit, and reports the first sampled voltage of each of the channels to the host computer; The host computer determines whether each of the channels is in a normal state according to whether the first sampled voltage of each of the channels is a corresponding preset voltage value, and sends a short-circuit instruction when it is determined that the target channel is in an abnormal state, wherein the short-circuit instruction is used to indicate that the target channel is in a short-circuit state; The tool control module controls the target channel to be in the short-circuit state according to the short-circuit instruction; The host computer sends the first constant voltage release instruction; The tooling control module receives the first constant voltage release instruction, controls the second power supply to be in a constant voltage release state according to the first constant voltage release instruction, and obtains the charging current value of the first power supply group and the discharging current value of the second power supply group.

5. The method according to claim 4, characterized in that The host computer determines whether each of the channels is in a normal state according to whether the first sampled voltage of each of the channels is a corresponding preset voltage value, including: Determine whether the first sampled voltage of the first channel corresponding to the first power source and the first sampled voltage of the second channel corresponding to the second power source are a first preset voltage value, and obtain a first determination result; Determine whether the first sampled voltages of the other channels except the first channel and the second channel are a second preset voltage value, and obtain a second determination result that the second preset voltage value is less than the first preset voltage value; If both the first judgment result and the second judgment result are yes, determining that each of the channels is in a normal state; When the first sampling voltage of the target channel other than the first channel and the second channel is not the second preset voltage value, it is determined that the target channel is in an abnormal state.

6. The method according to claim 2, characterized in that Each channel is further provided with a switch tube, which is in an off state. The sampling resistor of each channel is connected to the switch tube. The tooling control module controls one of the channels of the first series unit as the first channel and controls one of the channels of the second series unit as the second channel according to the setting instruction, including: The power supply calibration tool closes the switch tube of the first channel and the switch tube of the second channel according to the setting instruction, so that the sampling resistor of the first channel is respectively connected to the positive electrode and the negative electrode of the first power supply, and the sampling resistor of the second channel is respectively connected to the positive electrode and the negative electrode of the second power supply.

7. The method according to claim 4, wherein each of the channels is further provided with a bypass switch, and each bypass switch is connected in parallel to the corresponding channel, characterized in that: The tool control module controls the target channel to be in the short-circuit state according to the short-circuit instruction, including: The tooling control module controls the bypass switch corresponding to the target channel to be in a closed state according to the short-circuit instruction, so that the target channel is in the short-circuit state.

8. The method according to claim 7, wherein the calibration detection device comprises a current acquisition device and a test meter, wherein two ends of the current acquisition device are respectively connected to the first series unit and the second series unit, and the current acquisition device is connected to the tooling control module through the test meter, characterized in that: The tool control module receives the first constant voltage discharge instruction, controls the second power supply to be in a constant voltage discharge state according to the first constant voltage discharge instruction, and obtains a discharge current value of the first power supply group and a charge current value of the second power supply group, including: The tooling control module receives the first constant voltage release instruction, and controls the second power supply to be in a constant voltage release state according to the first constant voltage release instruction, so that the first power supply and the second power supply form a path; The current in the path is collected by the current collection device, and the current value is measured by the test meter. The current value is the charging current of the first power supply group and the discharging current of the second power supply group.

9. The method according to claim 8, characterized in that The second test instruction includes a second constant voltage discharge instruction and a second constant voltage charge instruction. The tooling control module receives the second test instruction, controls the first power supply to be in a constant voltage discharge state and controls the second power supply to be in a constant voltage charge state according to the second test instruction, obtains the charging current value of the first power supply group, and obtains the discharging current value of the second power supply group, including: The tool control module receives the second constant voltage release instruction, controls the first power supply to be in a constant voltage release state according to the second constant voltage release instruction, obtains the second sampled voltage of each of the channels in the first series unit and the second series unit, and reports the second sampled voltage of each of the channels to the host computer; The host computer determines whether each of the channels is in a normal state according to whether the second sampled voltage of each of the channels is a corresponding preset voltage value, and sends the second constant voltage charging instruction when each of the channels is in a normal state. The tooling control module receives the second constant voltage charging instruction, controls the second power supply to be in a constant voltage charging state according to the second constant voltage charging instruction, and obtains the discharge current value of the first power supply group and the charging current value of the second power supply group.

10. A power calibration system, comprising a power calibration tool and a host computer, wherein the power calibration tool comprises a first series unit, a second series unit, a sampling resistor, and a calibration detection device, wherein each series unit is composed of a plurality of channels connected in series, each channel is connected to a power supply, and each channel is connected in parallel to a sampling resistor, and the calibration detection device is connected to the first series unit and the second series unit, respectively, and the first series unit and the second series unit are connected in parallel via the calibration detection device, wherein: The host computer is used to send a setting instruction to the power supply calibration tool, and to send a first test instruction and a second test instruction to the power supply calibration tool, wherein the first test instruction is used to control the first power supply to be in a constant voltage charging state and to control the second power supply to be in a constant voltage discharging state, and the second test instruction is used to control the first power supply to be in a constant voltage discharging state and to control the second power supply to be in a constant voltage charging state, and is used to obtain and send a first calibration coefficient to each power supply in the first power supply group and obtain and send a second calibration coefficient to each power supply in the second power supply group according to the actual current value of the first power supply group, the actual current value of the second power supply group and the corresponding sampled current value, respectively, and the sampled current value is obtained through the sampling resistor; The power supply calibration tool is used to control one of the channels of the first series unit as the first channel and one of the channels of the second series unit as the second channel according to the setting instruction, the power supply connected to the first channel is the first power supply, and the power supply connected to the second channel is the second power supply, and is used to obtain the true current value of the first power supply group and the true current value of the second power supply group according to the first test instruction and the second test instruction, and send the true current value of the first power supply group and the true current value of the second power supply group to the host computer, the first power supply group is the power supply connected to all the channels of the first series unit, and the second power supply group is the power supply connected to all the channels of the second series unit; Each power supply in the first power supply group is calibrated for charging current and discharging current accuracy according to the first calibration coefficient, and each power supply in the second power supply group is calibrated for charging current and discharging current accuracy according to the second calibration coefficient.

11. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the method for calibrating the parallel-connected fractionation device in series mode according to any one of claims 1 to 9 is implemented.

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