CN112540307B - Military power battery charge-discharge performance test system - Google Patents
Military power battery charge-discharge performance test system Download PDFInfo
- Publication number
- CN112540307B CN112540307B CN202011378479.4A CN202011378479A CN112540307B CN 112540307 B CN112540307 B CN 112540307B CN 202011378479 A CN202011378479 A CN 202011378479A CN 112540307 B CN112540307 B CN 112540307B
- Authority
- CN
- China
- Prior art keywords
- discharge
- instruction
- charge
- current
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application relates to a system and a method for testing the charge and discharge performance of a military power battery, belonging to the technical field of battery testing, wherein the system comprises: the computer is used for generating a charge-discharge switching instruction, a charge mode instruction, a discharge mode instruction and a data acquisition instruction; the data processing card is used for sending the charge-discharge switching instruction to the charge-discharge control unit and uploading the sensing signal acquisition from the sensing test unit to a computer after receiving the data acquisition instruction; the sensing test unit is used for measuring a sensing signal of the tested power battery; and the charge and discharge control unit is used for executing the charge and discharge switching instruction, the charge mode instruction and the discharge mode instruction and controlling the charge mode and the discharge mode of the tested power battery. The application can complete various test modes such as constant current charge, constant current discharge, constant voltage charge, constant voltage discharge test, comprehensive complex test and the like according to the requirements of users, and realizes automatic test.
Description
Technical Field
The application belongs to the technical field of storage battery charge and discharge tests, and particularly relates to a military power battery charge and discharge performance test system.
Background
The power battery belongs to a storage battery, has the characteristics of high energy storage density, high power, wide working temperature range and long expected service life, is widely applied to various handheld devices, electric vehicles and aerospace vehicles, and particularly in the field of national defense and military industry, a large number of military power batteries are used as basic power supply units, and the performance and safety indexes of the military power batteries are directly related to the quality and safety of weaponry. The remaining capacity of the power battery, the expected service life, the consistency difference, the charge and discharge performance, etc., all have an influence on the reliability of the equipment.
In the process of testing the charge and discharge of the power battery, the battery performance is required to be tested under various different working conditions to judge whether the battery is qualified, so that the test equipment is required to be frequently switched and the test parameters are required to be adjusted. The existing battery charge and discharge test system has the defects of single function, low automation degree, incapability of using under multiple working conditions, low working efficiency, heavy volume, difficulty in transition and the like, and is difficult to meet the requirements of increasingly-growing weapon equipment updating.
Disclosure of Invention
In view of the defects of the prior art, the application aims to provide a military power battery charge and discharge performance test system which is used for solving the problems of low degree of automation, low working efficiency, high technical level requirement on testers, complicated operation, long time consumption, heavy volume, difficult transition and the like of the existing test system.
A military power cell charge-discharge performance test system comprising: the system comprises a computer, a data processing card, a sensing test unit and a charge-discharge control unit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the computer is used for generating a charge-discharge switching instruction, a charge mode instruction, a discharge mode instruction and a data acquisition instruction; the discharge mode instruction comprises a constant-current discharge mode instruction, a constant-voltage discharge mode instruction and a constant-power discharge mode instruction;
the data processing card is used for issuing the charge-discharge switching instruction to the charge-discharge control unit and uploading the sensing signal acquisition from the sensing test unit to a computer after receiving the data acquisition instruction;
the sensing test unit is used for measuring a sensing signal of the tested power battery;
and the charge and discharge control unit is used for executing the charge and discharge switching instruction, the charge mode instruction and the discharge mode instruction and controlling the charge mode and the discharge mode of the tested power battery.
Further, the charge-discharge control unit comprises a charge-discharge switching control circuit, a direct-current stabilized power supply and a direct-current electronic load; wherein, the liquid crystal display device comprises a liquid crystal display device,
the charge-discharge switching control circuit is used for executing a charge-discharge switching instruction from the data acquisition card and switching a charge-discharge mode;
the direct-current stabilized power supply is a programmable direct-current stabilized power supply and is used for executing a charging mode instruction from the computer and providing charging power under a charging mode for the tested power battery;
the direct current electronic load is a programmable direct current electronic load and is used for executing a discharging mode instruction from the computer and providing a discharging load under a discharging mode for the tested power battery.
Further, the charge-discharge switching control circuit comprises a first relay driving circuit, a second relay driving circuit, a third relay driving circuit and a fourth relay driving circuit, wherein each relay driving circuit controls one relay respectively;
two ends of the first relay driving circuit are respectively connected with the positive electrode of the direct current stabilized power supply and the positive electrode of the direct current electronic load; two ends of the second relay driving circuit are respectively connected with the positive electrode of the direct current electronic load and the positive electrode test terminal of the tested power battery; the two ends of the third relay driving circuit are respectively connected with the negative electrode of the direct-current stabilized power supply and the negative electrode of the direct-current electronic load, and the negative electrode of the direct-current stabilized power supply is also connected with a negative electrode test terminal of the tested power battery; two ends of the fourth relay driving circuit are respectively connected with the negative electrode of the direct current electronic load and the positive electrode test terminal of the tested power battery; and the control ends of the 4 relay driving circuits are respectively connected with the data acquisition card.
The direct current stabilized power supply regulates charging voltage and charging current based on the charging mode instruction; the charging mode instructions comprise a power-on instruction, a power-off instruction, a charging current value, a charging voltage value, an output starting instruction and an output switching-off instruction.
And the direct-current stabilized power supply controls the running and closing of the direct-current stabilized power supply circuit based on the starting power supply instruction and the closing power supply instruction, regulates charging voltage and charging current based on the set charging current value and the set charging voltage value, and controls the direct-current stabilized power supply to start and stop power output based on the starting output instruction and the closing output instruction.
The constant current discharge mode instruction comprises a discharge current value setting, constant current discharge switching instruction, a load loading instruction and a load unloading instruction; and the direct-current electronic load enters a constant-current discharge mode by executing the constant-current discharge mode instruction.
The constant-resistance discharging mode instruction comprises a discharging resistance value setting, a constant-resistance discharging switching instruction, a load loading instruction and a load unloading instruction; and the direct-current electronic load enters a constant-resistance discharge mode by executing the constant-resistance discharge mode instruction.
The constant power discharge mode instruction comprises a discharge power value setting instruction, a constant power discharge switching instruction, a load loading instruction and a load unloading instruction; and the direct-current electronic load enters a constant-power discharging mode by executing the constant-power discharging mode instruction.
The sensing test unit comprises a current sensor, a voltage sensor and a temperature sensor; the current sensor is used for collecting working current of the tested power battery; the voltage sensor is used for collecting working voltage between the anode and the cathode of the battery to be tested; the temperature sensor is used for collecting the surface temperature of the battery to be tested.
The data acquisition card comprises a signal preprocessing circuit, wherein the signal preprocessing circuit adopts a magneto-electric coupling isolation amplifying assembly to perform signal preprocessing on the sensing signals and then sends the sensing signals to a computer.
The method for testing the charge and discharge performance of the military power battery comprises a testing step of a charge mode and a testing step of a discharge mode; the discharging modes comprise a constant-current discharging mode, a constant-voltage discharging mode and a constant-power discharging mode; wherein, the liquid crystal display device comprises a liquid crystal display device,
the step of testing the charging mode includes:
the computer sends a charge-discharge switching instruction to the charge-discharge control unit, and the charge-discharge control unit switches to a charge mode;
the computer sends a power starting instruction to the direct-current stabilized power supply; sending a command for setting a charging parameter, setting a charging voltage value and setting a charging current value to a direct-current stabilized power supply;
the computer sends a data acquisition instruction to the data acquisition card, and acquires the current, voltage and surface temperature data of the tested power battery measured by the sensing test unit;
the computer sends a starting output instruction to the direct-current stabilized power supply, and the direct-current stabilized power supply starts to charge the tested power battery according to the charging parameters;
the computer sends a command for turning off output and a command for turning off the power supply to the direct-current stabilized power supply, and the test is finished;
the computer obtains a charging performance test result of the tested power battery based on the collected data;
the step of testing the discharge mode comprises the following steps:
the computer sends a charge-discharge switching instruction to the charge-discharge control unit, and the charge-discharge control unit switches to a discharge mode;
the method comprises the steps that a computer sends a starting load instruction to a direct current electronic load and sends a load setting mode instruction to the direct current electronic load, wherein the load setting mode instruction is a constant current discharge switching instruction, a constant resistance discharge switching instruction or a constant power discharge switching instruction; sending a parameter setting instruction to the direct-current electronic load according to the set load mode, wherein the parameter setting instruction comprises a discharge current value, a discharge resistance value or a discharge power value;
the computer sends a data acquisition instruction to the data acquisition card, and acquires the current, voltage and surface temperature data of the tested power battery measured by the sensing test unit;
the computer sends a load loading instruction to the direct-current electronic load, and the tested power battery starts to discharge to the direct-current electronic load according to the set discharging mode;
the computer sends a load unloading instruction to the direct current electronic load, and the test is finished;
the computer obtains a discharge performance test result of the tested power battery based on the collected data;
the charge-discharge switching instruction comprises the following execution steps:
the computer sends a charge-discharge switching instruction to the data processing card, and the data processing card transmits instruction signals to 4 relay driving circuits of the charge-discharge control circuit to perform closing and opening control on the relays;
after the charge-discharge switching instruction is executed, the first relay and the fourth relay are opened, the second relay and the third relay are closed, the second relay and the third relay connect the direct current electronic load with the tested power battery, and the test system is switched into a discharge mode;
after the charge-discharge switching instruction is executed, the first relay and the second relay are closed, the third relay and the fourth relay are opened, and then the first relay and the second relay connect the direct-current stabilized power supply with the tested power battery to form a charging loop, and the test system is switched into a charging mode.
The application has the following beneficial effects:
the application can complete various test modes such as constant-current charge, constant-current discharge, constant-voltage charge, constant-voltage discharge test, comprehensive complex test and the like according to the requirements of users, and can collect, store, process and display real-time data such as the voltage, the current and the temperature of the tested power battery by regulating charge and discharge parameters and switching charge and discharge modes through a computer, and automatically generate an electronic version test report after the test is completed, thereby realizing automatic test, fundamentally avoiding coarse errors caused by manual reading and counting, reducing the wiring and the number of times of transition when the power battery is tested, realizing the light weight of test equipment, reducing hidden troubles caused by excessive manual operation, improving the test efficiency and having remarkable economic and social benefits.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the application, like reference numerals being used to refer to like parts throughout the several views.
FIG. 1 is a schematic diagram of a system for testing the charge and discharge performance of a military power battery according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a DC stabilized power supply according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a constant current discharge circuit of a DC electronic load according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a constant resistance discharge circuit of a DC electronic load according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a constant power discharge circuit of a DC electronic load according to an embodiment of the present application;
FIG. 6 is a physical diagram of a military power battery charge and discharge performance test system according to an embodiment of the application;
FIG. 7 is a software main interface of a military power battery charge and discharge performance test system according to an embodiment of the present application;
FIG. 8 is a software self-test interface of a military power battery charge and discharge performance test system according to an embodiment of the present application;
FIG. 9 is a software debug interface of a military power cell charge and discharge performance test system according to an embodiment of the present application;
FIG. 10 is a graph of constant current discharge mode test data according to an embodiment of the present application;
FIG. 11 shows test data under complex operating conditions according to an embodiment of the present application.
Detailed Description
The following detailed description of preferred embodiments of the application is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the application, are used to explain the principles of the application and are not intended to limit the scope of the application.
The application provides a military power battery charge and discharge performance test system, which provides a plurality of charge and discharge test modes for a tested power battery, and realizes automatic test by regulating charge and discharge parameters, switching the charge and discharge modes and collecting data through a computer, reduces hidden danger caused by excessive manual operation and improves test efficiency.
System embodiment
In one embodiment of the present application, a system for testing the charge and discharge performance of a military power battery is disclosed, as shown in fig. 1, comprising: the system comprises a computer, a data processing card, a sensing test unit and a charge-discharge control unit; the charge-discharge control unit comprises a charge-discharge switching control circuit, a direct-current stabilized power supply and a direct-current electronic load.
The computer is connected with the data acquisition card through the PCI data interface of the computer internal main board in sequence, and is connected with the direct current electronic load and the direct current stabilized power supply through the computer serial port.
The data processing card consists of a data processor, and a signal preprocessing circuit, an IO driving circuit and a communication circuit which are respectively connected with the data processor. The signal preprocessing circuit is provided with a sensing signal input terminal, the IO driving circuit is provided with an IO driving terminal, and the communication circuit is provided with a PCI interface. The sensing signal input terminal is connected with the sensing test unit, the IO driving terminal is connected with the charge-discharge control unit, and the data processing card is inserted on a PCI socket of a main board of the computer through a PCI interface.
Specifically, the communication circuit is responsible for the data circuit connection between the data processor and the computer; the data processor converts an analog quantity sensing signal from the signal preprocessing circuit into a digital quantity through an analog-digital conversion interface of the analog quantity sensing signal, and then the digital quantity sensing signal is uploaded to the computer; the IO driving circuit has load capacity, and when the data processor receives a mode switching instruction from the computer, related instructions are issued to the charge and discharge control unit through the IO driving circuit to switch a test mode.
The sensing test unit is used for measuring a sensing signal of the tested power battery. Specifically, the sensing test unit measures the measured power battery by using a current sensor, a voltage sensor and a temperature sensor. And a voltage sensing line and a current sensing line are led out from the tested battery, a temperature sensor is stuck in the middle of the upper part of the tested power battery, and the lead wires of the temperature sensor and the voltage sensing line and the current sensing line are connected to a sensing signal input terminal of the data processing card.
The charge-discharge switching control circuit comprises a first relay driving circuit, a second relay driving circuit, a third relay driving circuit and a fourth relay driving circuit, and each relay driving circuit controls one relay respectively.
Specifically, the circuit connection mode of the charge-discharge switching control circuit is as follows: two ends of the first relay driving circuit are respectively connected with the positive electrode of the direct current stabilized power supply and the positive electrode of the direct current electronic load; two ends of the second relay driving circuit are respectively connected with the positive electrode of the direct current electronic load and the positive electrode test terminal of the tested power battery; the two ends of the third relay driving circuit are respectively connected with the negative electrode of the direct-current stabilized power supply and the negative electrode of the direct-current electronic load, and the negative electrode of the direct-current stabilized power supply is also connected with a negative electrode test terminal of the tested power battery; two ends of the fourth relay driving circuit are respectively connected with the negative electrode of the direct current electronic load and the positive electrode test terminal of the tested power battery; the control ends of the 4 relay driving circuits are connected to IO driving terminals of the data processing card through numerical control lines.
The direct-current stabilized power supply is a programmable power supply. The input end of the direct current power supply is an alternating current power supply (commercial power), and the direct current power supply outputs required direct current voltage and current to charge the military power battery.
Preferably, the dc voltage-stabilized power supply is a switch-type dc voltage-stabilized power supply, and the schematic diagram thereof is shown in fig. 2. The switch type direct current stabilized voltage power supply belongs to a high-frequency electric energy conversion device, and can control the direct current stabilized voltage power supply to output voltage and current required by a charging mode through modulating pulse width.
Unlike traditional DC power supply, the output voltage of the said DC stabilized power supply is realized by adjusting the on and off time of the transistor, which can avoid the transistor working in the amplifying region during the output voltage generation process, and utilize the transistor to continuously switch between the full-on mode (saturation region) and the full-off mode (cut-off region). The full-open mode and the full-close mode have the characteristic of low dissipation, and the conversion before switching has higher power dissipation, but the time is very short, so the heat loss is small, and the energy-saving effect is obvious. The direct current stabilized power supply has small heat loss and high conversion efficiency, and because the direct current stabilized power supply has high working frequency, a small-size and light-weight transformer can be used, and therefore, under the same power condition, the direct current stabilized power supply can be smaller than the common direct current power supply in size and lighter in weight.
The direct current electronic load consists of a power field effect transistor and a control circuit. The direct current electronic load depends on the power dissipation and power consumption device of the power field effect transistor by controlling the conduction quantity (duty ratio) of the internal power field effect transistor. The load voltage measuring device can accurately measure load voltage, accurately adjust load current, simulate load short circuit, simulate resistive, capacitive and inductive loads, and accurately control load current rise time.
The direct current electronic load has a constant current discharge function and can be used for constant current discharge test of the tested power battery. Specifically, the computer can set the discharge current value and the starting and stopping conditions of the constant-current discharge mode, so that the automatic loading and unloading of the direct-current electronic load are realized. Along with the progress of the discharging process, the total voltage of the battery pack is reduced, and the discharging current can be kept constant all the time, so that the requirement of accurately measuring the capacity of the power battery is met. Fig. 3 shows a schematic diagram of a constant current discharge circuit of a dc electronic load.
The direct current electronic load also has a constant resistance discharge function, and can be used for constant resistance discharge test of the tested power battery. Specifically, the computer can set a discharge resistance value and a starting and stopping condition of a constant-resistance discharge mode, and realize automatic loading and unloading of the direct-current electronic load. Along with the progress of discharge process, direct current electronic load can keep accurate resistance, test power battery's working property. Fig. 4 shows a schematic diagram of a constant resistance discharge circuit of a dc electronic load.
The direct current electronic load also has a constant power discharge function, and can be used for testing the constant power discharge performance of the tested power battery. Specifically, the computer can set the discharge power value and the starting cut-off condition of a constant power discharge mode, and realize the automatic loading and unloading of the direct current electronic load. The computer automatically calculates the discharging current of the direct current electronic load according to the collected real-time voltage of the power battery and loads the discharging current in real time; when the voltage of the power battery drops, the computer automatically increases the loading current of the direct current electronic load, and the power battery is kept to discharge at constant power. The constant power mode in the running process of the electric automobile can be simulated, and the continuous power supply time of the power battery can be tested. Fig. 5 shows a schematic diagram of a constant power discharge circuit of a dc electronic load.
And the signal preprocessing circuit adopts a magneto-electric coupling isolation amplifying assembly to perform signal preprocessing on the sensing signal from the sensing signal input terminal. The magneto-electric coupling isolation amplifying assembly comprises a transmitting end module, a coupling device and a receiving end module. The transmitting end module comprises a preamplifier/filter, a pulse width modulator and a current source switch group which are connected in sequence; the coupling device includes a coil and a magnetic sensor, and an insulating layer is provided between the coil and the magnetic sensor; the receiving end module comprises an amplifying and shaping circuit and a low-pass filter which are connected in sequence.
The magneto-electric coupling isolation amplifying assembly can prevent the data acquisition device from being influenced by potential destructive voltage of the remote sensor, and meanwhile, measurement errors caused by a grounding loop can be eliminated, so that the effects of isolating, transmitting and amplifying signals are achieved. The assembly has good linearity and temperature drift characteristics, the usable voltage range is 0V-10V, the precision is 0.1%, and the measurement requirement is met.
Preferably, the current sensor employs a precision shunt. The precise current divider is a sensor for measuring direct current, can play a role of expanding a current range, is essentially a high-precision low-resistance resistor, generates voltages at two ends of the resistor when direct current flows through the resistor, and divides the voltage by a resistance value according to ohm law to obtain a current value. The precise current divider is connected with a computer through a GPIB interface.
Preferably, the current sensor is a hall closed loop current sensor. The Hall closed loop current sensor is a magneto-electric conversion device made of semiconductor materials according to the Hall effect principle, can be used for nondestructively detecting the current of a tested wire, and induces a Hall voltage signal when the tested wire passes through the current, and the voltage signal is conducted to the signal preprocessing circuit for processing through a sensing signal wire.
According to the Hall effect principle, the magnitude of the current-carrying conductor can be indirectly measured by measuring the magnitude of the Hall potential, so that the Hall closed-loop current sensor can realize non-contact measurement of current, greatly reduce wiring operation difficulty and electric shock risk in current test, improve current test efficiency and improve the safety of a system. The current range which can be measured by the Hall closed-loop current sensor is 0A-10A, the detection precision is high, and the measurement requirement is met.
Preferably, the temperature sensor adopts an AD592CN type temperature sensor to collect the ambient temperature, and has the advantages that the linear relation exists between the actual temperature of the measured object and the output current, and the detection precision is high.
Preferably, the voltage sensor is implemented using a high voltage differential measurement circuit. And the input end of the high-voltage differential measurement circuit is connected with the anode and the cathode of the power battery to be measured during the test, and the output voltage signal is used for the data acquisition card to acquire and measure.
The high-voltage differential measurement circuit can directly measure high-voltage signals, can overcome zero drift, has good common mode noise suppression capability, has higher input impedance and lower capacitance at the input end, and can accurately and high-speed measure differential voltage signals.
In the implementation process, the military power battery charge and discharge performance testing system is placed in the movable cabinet. As shown in fig. 6, the cabinet is of a vertical box structure, a display screen, a mouse and a keyboard operation table of the computer are arranged on the upper half part of the front surface of the cabinet, and a main power switch, a power indicator light and an emergency stop button are arranged on the cabinet above the display screen; the lower half part of the cabinet body is provided with the computer host, the data processing card, the sensing test unit, the charge and discharge control unit, the direct current power supply and the direct current electronic load. The cabinet body is provided with four universal wheels, and has certain maneuverability.
Except that the battery to be tested and the sensor are placed in the cabinet, other parts of the test system are all placed in the cabinet, so that electric leakage and electric shock risks caused by exposure of electrical connection points of equipment are avoided, the safety of the whole machine is greatly improved, and the test system is compact in integral structure, strong in maneuverability, high in reliability, firm and durable.
In order to simulate the charge and discharge characteristics of the military power battery under different climatic conditions, the tested power battery is preferably placed in an incubator for testing. The working temperature and humidity environment required by the tested power battery are controlled through the constant temperature box, so that the charging and discharging characteristics of the military power battery under different climatic conditions can be simulated.
Test method embodiment
The application relates to a power battery charging mode testing method, which comprises the following steps:
s1: the computer sends a charge-discharge switching instruction to the charge-discharge control unit, and the charge-discharge control unit switches to a charge mode;
s2: the computer sends a power starting instruction to the direct-current stabilized power supply; sending a command for setting a charging parameter, setting a charging voltage value and setting a charging current value to a direct-current stabilized power supply;
s3: the computer sends a data acquisition instruction to the data acquisition card, and acquires the current, voltage and surface temperature data of the tested power battery measured by the sensing test unit;
s4: the computer sends a starting output instruction to the direct-current stabilized power supply, and the direct-current stabilized power supply starts to charge the tested power battery according to the charging parameters;
s5: the computer sends a command for turning off output and a command for turning off the power supply to the direct-current stabilized power supply, and the test is finished;
s6: the computer obtains a charging performance test result of the tested power battery based on the collected data;
the application relates to a power battery discharge mode test method, which comprises the following steps:
s7: the computer sends a charge-discharge switching instruction to the charge-discharge control unit, and the charge-discharge control unit switches to a discharge mode;
s8: the method comprises the steps that a computer sends a starting load instruction to a direct current electronic load and sends a load setting mode instruction to the direct current electronic load, wherein the load setting mode instruction is a constant current discharge switching instruction, a constant resistance discharge switching instruction or a constant power discharge switching instruction; sending a parameter setting instruction to the direct-current electronic load according to the set load mode, wherein the parameter setting instruction comprises a discharge current value, a discharge resistance value or a discharge power value;
s9: the computer sends a data acquisition instruction to the data acquisition card, and acquires the current, voltage and surface temperature data of the tested power battery measured by the sensing test unit;
s10: the computer sends a load loading instruction to the direct-current electronic load, and the tested power battery starts to discharge to the direct-current electronic load according to the set discharging mode;
s11: the computer sends a load unloading instruction to the direct current electronic load, and the test is finished;
s12: the computer obtains a discharge performance test result of the tested power battery based on the collected data;
the computer in S1 and S7 sends a charge-discharge switching instruction to the charge-discharge control unit, which has the following effects:
(1) The computer sends a charge-discharge switching instruction to the data processing card, and the data processing card transmits instruction signals to 4 relay driving circuits of the charge-discharge control circuit to perform closing and opening control on the relays;
(2) After the charge-discharge switching instruction is executed, the first relay and the fourth relay are opened, the second relay and the third relay are closed, the second relay and the third relay connect the direct current electronic load with the tested power battery, and the test system is switched into a discharge mode;
(3) After the charge-discharge switching instruction is executed, the first relay and the second relay are closed, the third relay and the fourth relay are opened, and then the first relay and the second relay connect the direct-current stabilized power supply with the tested power battery to form a charging loop, and the test system is switched into a charging mode.
(4) Furthermore, the application can perform working performance self-test on the direct current stabilized power supply and the direct current electronic load: after the charge-discharge switching instruction is executed, the first relay and the third relay are closed, the second relay and the fourth relay are opened, and then the direct-current stabilized power supply and the direct-current electronic load form a charging loop, so that a self-test mode is entered.
The working performance of the direct current stabilized power supply and the direct current electronic load can be tested in the self-test mode. The direct current stabilized power supply is tested according to the steps S2-S5 in the self-test mode, the direct current electronic load is tested according to the steps S8-S11, and the data acquisition and analysis objects during the test are the terminal voltage, the current and the temperature of the direct current stabilizer.
Based on the further improvement of the scheme, the computer is provided with overcurrent, overvoltage and overheat protection values, monitors the sensing current, the sensing voltage and the sensing temperature in real time, and gives an alarm once the signal value exceeds the protection value, so that the test system can be manually switched to the off state, or the test system can be manually switched to the off state without manual operation, and the computer gives an instruction to the charge and discharge control unit to switch the test system to the off state after 20 seconds from the default alarm.
Test Effect examples
The operation interface of the computer software part of the test system is shown in fig. 7-9.
The constant current discharge test is carried out under the condition that the ambient temperature is 20 ℃, and the main process is as follows: when the electric quantity is full, the tested power battery starts a constant-current discharge mode, and the discharge multiplying power is 1C. When the terminal voltage is lower than the off voltage, the discharge is automatically stopped, and the obtained test data graph is shown in fig. 10.
The complex working condition test is carried out under the condition that the ambient temperature is 20 ℃, and the main process is as follows: when the electric quantity is full, the tested power battery starts a constant-current discharge mode, the discharge multiplying power is 1C, the discharge interval of the battery terminal voltage is 0.1V, the discharge time is 360 seconds, then the battery is empty for 600 seconds, the change rate of the terminal voltage is lower than 1mV/min, the battery is circularly discharged, and when the terminal voltage is lower than the cut-off voltage, the discharge is automatically stopped, and the obtained test data diagram is shown in FIG. 11.
The test result shows that the test data collected by the system has higher real-time performance, the test precision meets the requirement of the power battery on health state evaluation, and the performance of the system reaches the expectations. Compared with other test systems in the same industry at present, the system has high automation level and simple and convenient operation, and can greatly improve the test efficiency while ensuring the test quality.
The set of military power battery charge and discharge performance test system is successfully applied to the charge and discharge performance test of military lithium batteries of a plurality of units. The test results show that: the system can effectively complete the charge and discharge performance test of the power battery under various working conditions, provides effective technical means for the aspects of loading capacity, residual electric quantity prediction, residual life estimation, comprehensive performance evaluation and the like of the military power battery, obviously improves the efficiency and automation level of the charge and discharge performance test of the military power battery, radically eliminates coarse errors introduced by human factors, effectively ensures the safety and quality of the tested military power battery, and provides reliable guarantee for development, test and production of related military products.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application.
Claims (7)
1. A military power cell charge-discharge performance test system, comprising: the system comprises a computer, a data processing card, a sensing test unit and a charge-discharge control unit; wherein, the liquid crystal display device comprises a liquid crystal display device,
the computer is used for generating a charge-discharge switching instruction, a charge mode instruction, a discharge mode instruction and a data acquisition instruction; the discharge mode instruction comprises a constant-current discharge mode instruction, a constant-resistance discharge mode instruction, a constant-voltage discharge mode instruction and a constant-power discharge mode instruction;
the data processing card is used for issuing the charge-discharge switching instruction to the charge-discharge control unit and uploading the sensing signal acquisition from the sensing test unit to a computer after receiving the data acquisition instruction;
the sensing test unit is used for measuring a sensing signal of the tested power battery;
the charging and discharging control unit is used for executing the charging and discharging switching instruction, the charging mode instruction and the discharging mode instruction and controlling the charging mode and the discharging mode of the tested power battery;
the charging and discharging control unit comprises a charging and discharging switching control circuit, a direct-current stabilized power supply and a direct-current electronic load; wherein, the liquid crystal display device comprises a liquid crystal display device,
the charge-discharge switching control circuit is used for executing a charge-discharge switching instruction from the data processing card and switching a charge-discharge mode;
the direct-current stabilized power supply is a programmable direct-current stabilized power supply and is used for executing a charging mode instruction from the computer and providing charging power under a charging mode for the tested power battery;
the direct current electronic load is a programmable direct current electronic load and is used for executing a discharge mode instruction from the computer and providing a discharge load under a discharge mode for the tested power battery;
the charge-discharge switching control circuit comprises a first relay driving circuit, a second relay driving circuit, a third relay driving circuit and a fourth relay driving circuit, wherein each relay driving circuit controls one relay respectively;
the two ends of the first relay driving circuit are respectively connected with the positive electrode of the direct current stabilized power supply and the positive electrode of the direct current electronic load; two ends of the second relay driving circuit are respectively connected with the positive electrode of the direct current electronic load and the positive electrode test terminal of the tested power battery; the two ends of the third relay driving circuit are respectively connected with the negative electrode of the direct-current stabilized power supply and the negative electrode of the direct-current electronic load, and the negative electrode of the direct-current stabilized power supply is also connected with a negative electrode test terminal of the tested power battery; two ends of the fourth relay driving circuit are respectively connected with the negative electrode of the direct current electronic load and the positive electrode test terminal of the tested power battery; the control ends of the 4 relay driving circuits are respectively connected with the data processing card;
the charging mode instruction comprises a power supply starting instruction, a power supply closing instruction, a charging current value setting, a charging voltage value setting, an output starting instruction and an output switching off instruction; and the direct-current stabilized power supply controls the running and closing of the direct-current stabilized power supply circuit based on the starting power supply instruction and the closing power supply instruction, regulates charging voltage and charging current based on the set charging current value and the set charging voltage value, and controls the direct-current stabilized power supply to start and stop power output based on the starting output instruction and the closing output instruction.
2. The military power battery charge-discharge performance test system of claim 1, wherein the constant current discharge mode command comprises a set discharge current value, a switch constant current discharge command, a load loading command, and a load unloading command; and the direct-current electronic load enters a constant-current discharge mode by executing the constant-current discharge mode instruction.
3. The military power battery charge-discharge performance test system of claim 1, wherein said constant resistance discharge mode command comprises a set discharge resistance value, a switch constant resistance discharge command, a load loading command, and a load unloading command; and the direct-current electronic load enters a constant-resistance discharge mode by executing the constant-resistance discharge mode instruction.
4. The military power battery charge-discharge performance test system of claim 3, wherein said constant power discharge mode command comprises a set discharge power value, a switch constant power discharge command, a load loading command, and a load unloading command; and the direct-current electronic load enters a constant-power discharging mode by executing the constant-power discharging mode instruction.
5. The military power battery charge-discharge performance test system of claim 4, wherein said sensing test unit comprises a current sensor, a voltage sensor, and a temperature sensor; the current sensor is used for collecting working current of the tested power battery; the voltage sensor is used for collecting working voltage between the anode and the cathode of the battery to be tested; the temperature sensor is used for collecting the surface temperature of the battery to be tested.
6. The military power battery charge and discharge performance test system according to claim 5, wherein the data processing card comprises a signal preprocessing circuit, and the signal preprocessing circuit adopts a magneto-electric coupling isolation amplifying assembly to perform signal preprocessing on the sensing signals and then sends the sensing signals to the computer.
7. A method of testing the charge and discharge performance of a military power battery using the test system of any one of claims 1-6, characterized by the steps of testing the charge mode and the discharge mode; the discharge modes comprise a constant-current discharge mode, a constant-resistance discharge mode instruction, a constant-voltage discharge mode and a constant-power discharge mode; wherein, the liquid crystal display device comprises a liquid crystal display device,
the step of testing the charging mode includes:
the computer sends a charge-discharge switching instruction to the charge-discharge control unit, and the charge-discharge control unit switches to a charge mode;
the computer sends a power starting instruction to the direct-current stabilized power supply; sending a command for setting a charging parameter, setting a charging voltage value and setting a charging current value to a direct-current stabilized power supply;
the computer sends a data acquisition instruction to the data processing card, and acquires current, voltage and surface temperature data of the tested power battery measured by the sensing test unit;
the computer sends a starting output instruction to the direct-current stabilized power supply, and the direct-current stabilized power supply starts to charge the tested power battery according to the charging parameters;
the computer sends a command for turning off output and a command for turning off the power supply to the direct-current stabilized power supply, and the test is finished;
the computer obtains a charging performance test result of the tested power battery based on the collected data;
the step of testing the discharge mode comprises the following steps:
the computer sends a charge-discharge switching instruction to the charge-discharge control unit, and the charge-discharge control unit switches to a discharge mode;
the method comprises the steps that a computer sends a starting load instruction to a direct current electronic load and sends a load setting mode instruction to the direct current electronic load, wherein the load setting mode instruction is a constant current discharge switching instruction, a constant resistance discharge switching instruction or a constant power discharge switching instruction; sending a parameter setting instruction to the direct-current electronic load according to the set load mode, wherein the parameter setting instruction comprises a discharge current value, a discharge resistance value or a discharge power value;
the computer sends a data acquisition instruction to the data processing card, and acquires current, voltage and surface temperature data of the tested power battery measured by the sensing test unit;
the computer sends a load loading instruction to the direct-current electronic load, and the tested power battery starts to discharge to the direct-current electronic load according to the set discharging mode;
the computer sends a load unloading instruction to the direct current electronic load, and the test is finished;
the computer obtains a discharge performance test result of the tested power battery based on the collected data;
the charge-discharge switching instruction comprises the following execution steps:
the computer sends a charge-discharge switching instruction to the data processing card, and the data processing card transmits instruction signals to 4 relay driving circuits of the charge-discharge control circuit to perform closing and opening control on the relays;
after the charge-discharge switching instruction is executed, the first relay and the fourth relay are opened, the second relay and the third relay are closed, the second relay and the third relay connect the direct current electronic load with the tested power battery, and the test system is switched into a discharge mode;
after the charge-discharge switching instruction is executed, the first relay and the second relay are closed, the third relay and the fourth relay are opened, and then the first relay and the second relay connect the direct-current stabilized power supply with the tested power battery to form a charging loop, and the test system is switched into a charging mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378479.4A CN112540307B (en) | 2020-11-30 | 2020-11-30 | Military power battery charge-discharge performance test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378479.4A CN112540307B (en) | 2020-11-30 | 2020-11-30 | Military power battery charge-discharge performance test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112540307A CN112540307A (en) | 2021-03-23 |
| CN112540307B true CN112540307B (en) | 2023-10-03 |
Family
ID=75016578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011378479.4A Active CN112540307B (en) | 2020-11-30 | 2020-11-30 | Military power battery charge-discharge performance test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112540307B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113189501B (en) * | 2021-04-14 | 2022-10-25 | 南京君海数能科技有限公司 | Battery testing and battery detection synchronization system |
| CN113190981B (en) * | 2021-04-20 | 2024-01-19 | 海口安博尔能源技术开发有限公司 | High-power system integration method |
| CN114035080A (en) * | 2021-12-06 | 2022-02-11 | 北京通敏未来动力科技有限公司 | Automobile power battery charging and discharging test system |
| CN114326896B (en) * | 2021-12-20 | 2024-04-02 | 歌尔科技有限公司 | Program-controlled adjustable constant-current constant-resistance constant-power constant-voltage load system |
| CN116660660B (en) * | 2023-06-06 | 2023-10-20 | 南京志卓电子科技有限公司 | Train power supply safety monitoring system and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769995A (en) * | 2010-01-26 | 2010-07-07 | 南京工业大学 | Intelligent battery cycle charge-discharge testing device |
| CN103033760A (en) * | 2012-12-15 | 2013-04-10 | 安徽工程大学 | Battery charging and discharging tester |
| CN203164381U (en) * | 2012-12-15 | 2013-08-28 | 安徽工程大学 | Battery charging and discharging tester |
| CN103823190A (en) * | 2014-03-11 | 2014-05-28 | 淄博洁力电气设备有限公司 | Comprehensive parameter testing device for large-capacity power battery and testing method of comprehensive parameter testing device |
| CN105891716A (en) * | 2014-12-15 | 2016-08-24 | 广西大学 | Battery characteristic parameter testing device |
| CN108490368A (en) * | 2018-07-02 | 2018-09-04 | 桂林电子科技大学 | A kind of charging and discharging lithium battery test device and method |
| CN209231489U (en) * | 2018-11-24 | 2019-08-09 | 深圳市鑫达能电子有限责任公司 | A kind of aging tester control circuit |
| JP2020166989A (en) * | 2019-03-28 | 2020-10-08 | 東洋システム株式会社 | Charge/discharge test device and charge/discharge test method |
-
2020
- 2020-11-30 CN CN202011378479.4A patent/CN112540307B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769995A (en) * | 2010-01-26 | 2010-07-07 | 南京工业大学 | Intelligent battery cycle charge-discharge testing device |
| CN103033760A (en) * | 2012-12-15 | 2013-04-10 | 安徽工程大学 | Battery charging and discharging tester |
| CN203164381U (en) * | 2012-12-15 | 2013-08-28 | 安徽工程大学 | Battery charging and discharging tester |
| CN103823190A (en) * | 2014-03-11 | 2014-05-28 | 淄博洁力电气设备有限公司 | Comprehensive parameter testing device for large-capacity power battery and testing method of comprehensive parameter testing device |
| CN105891716A (en) * | 2014-12-15 | 2016-08-24 | 广西大学 | Battery characteristic parameter testing device |
| CN108490368A (en) * | 2018-07-02 | 2018-09-04 | 桂林电子科技大学 | A kind of charging and discharging lithium battery test device and method |
| CN209231489U (en) * | 2018-11-24 | 2019-08-09 | 深圳市鑫达能电子有限责任公司 | A kind of aging tester control circuit |
| JP2020166989A (en) * | 2019-03-28 | 2020-10-08 | 東洋システム株式会社 | Charge/discharge test device and charge/discharge test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112540307A (en) | 2021-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112540307B (en) | Military power battery charge-discharge performance test system | |
| CN201173965Y (en) | Core technical parameter automatic test system of electric project DC power source equipment | |
| US20130307572A1 (en) | Battery simulation circuit | |
| CN105258718A (en) | Comprehensive tester metering detection system, adapter, and metering test platform | |
| CN105182126B (en) | Improved distribution transformer energy efficiency metering detection method | |
| CN107677964A (en) | A kind of New energy automobile motor battery simulating test device and method | |
| CN106771632A (en) | Multi-channel DC resistance meter | |
| CN106093641B (en) | A kind of the DC bias characteristics test circuit and test method of capacitor | |
| Shen et al. | Design of online detection system for insulation resistance of electric vehicle based on unbalanced bridge | |
| CN110554328B (en) | HHT-based storage battery internal resistance measurement method and system | |
| CN206161810U (en) | Intelligent control box relay test appearance | |
| CN104020357B (en) | Capacitance test circuit and method of testing under a kind of Dc bias | |
| CN203178367U (en) | Internal resistance measuring circuit of battery capacity grading cabinet | |
| CN205079787U (en) | Comprehensive tester metrological verification system and adapter and measurement test platform | |
| CN104977554A (en) | Detection device for storage battery internal resistance tester | |
| CN106772116B (en) | A kind of Auto-Test System for aerospace satellite secondary power supply | |
| CN210863986U (en) | Storage battery internal resistance measuring system | |
| CN209460380U (en) | Lithium ion battery direct-current internal resistance tests circuit | |
| CN207603241U (en) | Discharging device | |
| CN210665864U (en) | Single-phase grounding capacitance current testing device of high-voltage power grid | |
| CN208384068U (en) | A kind of Partial discharge signal simulator with temperature measurement function | |
| CN204439820U (en) | Once-through type lightning arrester on-Line Monitor Device detector | |
| CN208384096U (en) | A kind of Partial discharge signal simulator with temperature measuring circuit | |
| CN103713273B (en) | A kind of monitor for arrester leakage current trouble-shooter | |
| CN203535195U (en) | System for testing batteries based on PXI bus technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |