CN115586447B - Ship power battery detection equipment and system - Google Patents
Ship power battery detection equipment and system Download PDFInfo
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- CN115586447B CN115586447B CN202211592238.9A CN202211592238A CN115586447B CN 115586447 B CN115586447 B CN 115586447B CN 202211592238 A CN202211592238 A CN 202211592238A CN 115586447 B CN115586447 B CN 115586447B
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- 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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
The invention relates to the technical field of detection of power batteries for ships, in particular to a detection device and a system for a ship power battery, which comprises: the ship simulation module is used for simulating the state of the power battery in the running process of the ship; the detection module is used for detecting the voltage and the temperature of the power battery to be detected; the elasticity measuring module is used for detecting the pressure of the battery on each buffer device in the running process of the ship; and the server is used for respectively receiving the test state, the voltage change and the temperature change signals of the battery to be tested and alarming the stability of the power battery to be tested. By means of the mode of arranging the ship simulation module, the detection module, the elasticity measurement module and the server, the detection safety of the power battery is effectively guaranteed, and meanwhile the accuracy of detecting the stability of the power battery is effectively improved.
Description
Technical Field
The invention relates to the field of detection of power batteries for ships, in particular to equipment and a system for detecting a power battery of a ship.
Background
The power battery of the ship is used as a main power source of a small ship propulsion system, the stability of the output of the power battery is closely related to the safety of the ship, and the detection of the power battery of the ship is an important guarantee for ensuring the safe running of the ship. Chinese patent publication No.: CN108448180A discloses a ship battery management system, which uses a multilevel management method to configure parameters of the battery management system so as to meet the management requirements of different ship battery power systems; chinese patent publication No.: CN113746082A discloses a ship power supply system and method, which utilizes a mode of setting a frequency converter to control the current output of a power supply, so as to control the stability of internal current; chinese patent publication No.: CN114692674A discloses a method and a system for determining a fault of a ship propulsion system, which ensure accuracy and reliability of fault determination by setting a system, improve determination efficiency, and save manpower and material resources in fault verification.
Therefore, the technical scheme has the following problems: the problem of the battery stability reduction degree caused by the influence of sea waves on the ship in the running process of the ship cannot be tested.
Disclosure of Invention
Therefore, the invention provides a ship power battery detection device and system, which are used for solving the problem that the battery stability reduction degree caused by the influence of sea waves on a ship in the running process of the ship cannot be tested in the prior art.
In one aspect, the present invention provides a power battery detection system, including:
the ship simulation module is arranged below the power battery to be tested and used for simulating the critical state of the power battery in the running process of a ship; when detection is carried out, the power batteries to be detected are sequentially arranged on the ship simulation module and are respectively detected;
the detection module is arranged on the ship simulation module, the lead of the power battery to be detected and the shell, comprises a plurality of detection heads arranged on the power battery to be detected and the lead and is used for detecting the voltage and the temperature of the power battery to be detected;
the elastic measurement module is arranged in the ship simulation module, comprises a plurality of buffer devices and a plurality of pressure detection devices and is used for detecting the pressure of the battery on each buffer device during the running of the ship;
and the server is respectively connected with the ship simulation module, the detection module and the elasticity measurement module, is used for controlling the test state of the battery to be tested, receiving a voltage change signal, a temperature change signal and a pressure signal, and gives an alarm for the stability of the power battery to be tested.
Furthermore, the ship simulation module comprises a plurality of lifting rods driven by a motor and used for simulating the motion of the power batteries to be tested in sea waves, and the server controls the ship simulation module to shake the power batteries to be tested in a preset simulation mode so as to simulate the state of the shake amplitude of the ship in a corresponding critical environment;
the power battery to be detected is arranged on the ship simulation module at a preset interval to simulate a power battery pack in a ship, and each detection head of the detection module detects the temperature and the voltage of each part in the power battery pack at a preset period during detection so as to detect the voltage and the temperature fluctuation generated by constant current discharge of the battery in the critical environment.
Furthermore, the elasticity measurement module is arranged in the ship simulation module and clamps the power battery to be detected, the server controls the ship simulation module to perform detection corresponding to the power battery to be detected in a preset simulation mode according to the shaking amplitude, the battery to be detected impacts the elasticity measurement module with a preset impulse according to the shaking amplitude, and meanwhile, the pressure detection devices in the elasticity measurement module transmit the pressure values corresponding to the elasticity measurement modules to the server in a cycle of preset pressure detection duration.
Further, the server sets the constant-current discharge time length corresponding to a single power battery to be tested in the critical environment as the self-test start time, the time length from the start of the voltage drop of the power battery to be tested is recorded as the actual discharge time length, and the server is provided with the standard discharge time length corresponding to the power battery to be tested; and the server acquires the actual discharge time length corresponding to the single power battery to be tested, calculates the actual discharge time length and the corresponding standard discharge time length, and judges the actual capacity change of the battery according to the preset discharge time length comparison.
Further, when the server controls the ship simulation module to test a single power battery to be tested, the power battery to be tested generates pressure on each elastic measurement module, and each pressure curve is transmitted to the server by the elastic measurement modules, wherein in the test process, the vector sum value of the pressure applied to each elastic measurement module changes periodically, for the single power battery to be tested, a corresponding preset maximum pressure value is stored in the server, and if the vector sum value of the pressure is smaller than the preset maximum pressure value in two continuous adjacent periods, the server judges that the electrolyte in the power battery to be tested generates shaking amplitude, and judges that the capacity of the power battery to be tested is damaged.
Further, for a single power battery to be tested, when the server judges that the capacity of the power battery to be tested changes, the server controls the ship simulation module to stop simulating sea waves, timing is started, when the temperature of the power battery to be tested is reduced to the room temperature, the server stops timing, and the timing time interval is recorded as the recovery time of the power battery to be tested; when the power battery to be detected is recovered to the room temperature, the server controls the detection module to continue discharging the power battery to be detected and measures the corresponding recovery voltage of the power battery to be detected, and simultaneously, the server judges the recovery capability of the corresponding power battery according to the recovery voltage and the recovery time length, wherein the preset recovery voltage and the preset recovery time length of the corresponding power battery to be detected are preset in the server,
if the recovery voltage is smaller than the preset recovery voltage, the server judges that the recovery capability of the battery to be tested is unqualified, sends an additional shock absorption alarm and prompts a single power battery with additional shock absorption to be tested;
if the recovery voltage is not less than the preset recovery voltage, the server further judges according to the recovery duration;
if the recovery time length is not greater than the preset recovery time length, the server judges that the recovery capability of the battery to be tested is qualified;
and if the recovery time length is less than the preset recovery time length, the server judges that the recovery capacity of the battery to be tested is unqualified, sends an additional shock absorption alarm and prompts that the single power battery with additional shock absorption is tested.
Furthermore, a maximum temperature threshold value is set in the server, and if the server controls the detection module to detect that the temperature of the single power battery to be detected exceeds the maximum temperature threshold value, the server sends out a battery abnormity alarm and stops the test.
In another aspect, the present invention provides a ship power battery detection apparatus, including:
the simulation device is placed on the ground and used for bearing the power battery to be tested;
the voltage detection device is fixed on the simulation device, is connected with the power battery to be tested and is used for testing the discharge capacity of the power battery to be tested;
the temperature detection device comprises a plurality of detection heads which are respectively connected with all parts of the power battery to be detected and used for detecting the temperature of the power battery to be detected in the test process;
the elastic measuring devices are arranged on the simulation device and used for buffering the power battery to be measured and measuring the pressure in the corresponding direction;
and the processor is respectively connected with the simulation device, the voltage detection device, the temperature detection device and each elasticity measurement device and is used for controlling and analyzing the stability of the power battery to be measured.
Further, the simulation apparatus includes:
the objective table is arranged at the top of the simulation device and used for bearing and fixing the power battery to be tested;
the lifting rods are respectively connected with the objective table and used for controlling the objective table to simulate the state of a power battery to be tested in the running process of the ship;
and the motors are respectively connected with the corresponding lifting rods and used for providing power for the lifting rods and controlling the motion frequency of each lifting rod.
The detection device includes:
the constant current discharge instrument is connected with the power battery to be tested and is used for discharging the power battery to be tested;
the voltmeter is connected with the constant current discharge instrument and is used for testing the voltage change of the power battery to be tested in the testing process;
and the temperature probe is arranged on the power to be detected and is used for detecting the temperature change of the power battery to be detected.
Further, the elasticity measuring device includes:
the plurality of impact blocks are respectively arranged on the side wall of the objective table and clamped around the power battery to be tested so as to buffer the power battery to be tested;
and the pressure sensors are respectively arranged in the impact blocks and correspond to the impact blocks so as to measure the pressure of the impact blocks at the corresponding positions on the power battery to be tested in the test process.
Compared with the prior art, the method has the advantages that the method effectively ensures the detection safety of the power battery and effectively improves the accuracy of detecting the stability of the power battery by using the mode of arranging the ship simulation module, the detection module, the elasticity measurement module and the server.
Furthermore, the power battery is classified in a mode of comparing the capacity of the power battery, the discharge stability of the battery is tested in a mode of measuring the voltage fluctuation ratio, the detection complexity is effectively reduced, and meanwhile the model of the battery is classified, so that the accuracy of detecting the stability of the power battery is further improved.
Furthermore, the method for testing the discharge time length ratio of the power battery is utilized, so that the capacity of the power battery is tested, the probability of wrong unqualified judgment is effectively reduced, and the accuracy of detecting the stability of the power battery is further improved.
Furthermore, the capacity recovery performance of the battery is judged by testing the recovery time of the capacity of the power battery, and the accuracy of detecting the stability of the power battery is further improved while the reliability of judging the stability of the battery is effectively improved.
Furthermore, the elastic measurement module is used for measuring the pressure corresponding to each direction during testing so as to judge the shaking amplitude condition of the electrolyte in the battery, judge whether the battery is damaged or not according to the shaking amplitude condition, and effectively improve the accuracy of detecting the stability of the power battery while judging the damage of the battery.
Furthermore, the recovery performance of the power battery is judged by integrating the voltage change and the temperature recovery duration, and when the capacity recovery performance of the power battery is unqualified, the server judges that the shock absorption is added to the power battery, so that the qualification rate of the power battery is effectively improved, and the accuracy of detecting the stability of the power battery is further improved.
Furthermore, the mode of monitoring the temperature is utilized, unsafe factors caused by detection are monitored, and the accuracy of detecting the stability of the power battery is further improved while the safety of the detection process is effectively improved.
Furthermore, the detection equipment is formed by connecting the simulation device, the voltage detection device and the temperature detection device with the processor, so that the accuracy of detecting the stability of the power battery is further improved while the association degree of the equipment is effectively improved.
Furthermore, through the mode that sets up objective table, a plurality of lifter and a plurality of motor in analogue means to set up the mode of constant current discharge appearance, a plurality of temperature probe and voltmeter in detection device, when effectively having reduced external influence, further promoted the accuracy of detecting the power battery stability.
Furthermore, by arranging the plurality of impact blocks and the plurality of pressure sensors in the elastic measuring device, the risk of damage to the battery to be detected caused by impact on the battery detection equipment is effectively reduced, and meanwhile, the anti-interference performance of the battery is increased, so that the accuracy of detecting the stability of the power battery is further improved.
Drawings
FIG. 1 is a block diagram of a power cell detection system according to the present invention;
FIG. 2 is a schematic structural diagram of a power battery detection apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a simulation apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a position of an elasticity measuring apparatus according to an embodiment of the present invention;
wherein: 1: a simulation device; 11: a lifting rod; 12: an electric motor; 13: a driven wheel; 2: a voltage detection device; 3: a temperature detection device; 4: a power battery to be tested; 5: an elasticity measuring device.
Detailed description of the preferred embodiments
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Please refer to fig. 1, which is a block diagram of a power battery detection system according to the present invention, including:
the ship simulation module is arranged below the power battery to be tested and used for simulating the running state of the power battery in a ship; when detection is carried out, a plurality of power batteries to be detected are sequentially arranged on the ship simulation module and are respectively detected;
the voltage detection module is arranged on the ship simulation module, comprises a plurality of detection heads arranged on the power battery to be detected and the lead and is used for detecting the voltage of the power battery to be detected;
the temperature detection module is arranged on a lead and a shell of the power battery to be detected and is used for respectively detecting the temperatures of the ship simulation module and the power battery to be detected;
and the server is respectively connected with the ship simulation module, the voltage detection module and the temperature detection module and used for controlling the test state of the battery to be tested, receiving the voltage change signal, the temperature change signal and the pressure signal and alarming the stability of the power battery to be tested.
By means of the mode of arranging the ship simulation module, the voltage detection module, the temperature detection module and the server, the accuracy of detecting the stability of the power battery is effectively improved while the safety of detection of the power battery is effectively guaranteed.
Specifically, the ship simulation module comprises a plurality of lifting rods driven by a motor and used for simulating the motion of power batteries to be tested in sea waves, the server controls the ship simulation module to shake the power batteries to be tested in a preset simulation mode, for the ith power battery to be tested, the theoretical capacity of the ith power battery to be tested is Qi, wherein i =1,2,3, \ 8230, n and n are the number of the maximum power batteries to be tested, a first preset capacity Q alpha and a second preset capacity Q beta are arranged in the server, wherein Q alpha is more than 0 and less than Q beta, the first preset capacity Q alpha corresponds to the maximum battery capacity of an offshore ship, the second preset capacity Q beta corresponds to the maximum battery capacity of a far-sea ship, and the server compares Qi with the Q alpha and the Q beta to determine the shaking amplitude mode of the ship simulation module to be controlled to shake,
if Qi is less than or equal to Q alpha, the server judges that the power battery to be tested is applied to the offshore ship and controls the ship simulation module to shake the power battery to be tested in an offshore wave mode;
if the Q alpha is larger than the Qi and smaller than or equal to the Q beta, the server judges that the power battery to be tested is applied to the open sea ship, and controls the ship simulation module to shake the power battery to be tested in an open sea wave mode;
if Q beta is less than Qi, the server judges that the capacity of the power battery to be detected is too large, judges that the ith power battery to be detected exceeds the safety range of the small ship, and simultaneously sends out an undetectable alarm.
The power battery is classified by using a mode of comparing the capacity of the power battery, so that the accuracy of detecting the stability of the power battery is further improved while the detection efficiency is effectively improved.
Specifically, a voltage detection module and each power battery to be detected are arranged on a ship simulation module at a preset interval and used for detecting voltage fluctuation generated by constant current discharge of each power battery to be detected when the ship simulation module simulates sea wave shaking amplitude, for the ith power battery to be detected, the actual maximum voltage fluctuation is Ui, the theoretical maximum voltage fluctuation is Ui', the server calculates the voltage fluctuation ratio of the actual voltage fluctuation to the theoretical voltage fluctuation of the ith power battery to be detected as Ri, wherein Ri =
The server is provided with a first preset voltage fluctuation ratio R alpha and a second preset voltage fluctuation ratio R beta, wherein R alpha is more than 1 and less than R beta, the first preset voltage fluctuation ratio R alpha is the maximum stable fluctuation ratio, the second preset voltage fluctuation ratio R beta is the maximum qualified fluctuation ratio, the server compares Ri with R alpha and R beta to determine the discharge stability of the power battery to be tested,
if Ri is less than 1, the server judges that the power battery to be tested leaks electricity and judges that the power battery to be tested is unqualified;
if Ri is more than 1 and less than or equal to R alpha, the server judges that the voltage fluctuation of the power battery to be tested is stable, and judges that the power battery to be tested is qualified;
if R alpha is larger than Ri and is not larger than R beta, the server judges that the voltage fluctuation of the power battery to be detected is normal, and further judges the stability of the power battery to be detected according to the capacity change of the voltage of the power battery to be detected;
and if R beta is less than Ri, the server judges that the voltage fluctuation of the power battery to be tested is large, and judges that the power battery to be tested is unqualified.
The discharge stability of the battery is tested by utilizing a mode of measuring the voltage fluctuation ratio, the detection complexity is effectively reduced, and meanwhile, the model of the battery is classified, so that the accuracy of detecting the stability of the power battery is further improved.
Specifically, for a single power battery to be tested, when the server judges that the capacity of the power battery to be tested changes, the server controls the ship simulation module to stop simulating sea waves, timing is started at the same time, when the temperature of the power battery is reduced to room temperature, the server stops timing, and the timing time period is recorded as the recovery time of the power battery to be tested; when the power battery to be detected is recovered to the room temperature, the server controls the detection module to continue discharging the power battery to be detected, measures the corresponding recovery voltage of the power battery to be detected, and simultaneously judges the recovery capability of the corresponding power battery according to the recovery voltage and the recovery time length, wherein the preset recovery voltage and the preset recovery time length of the corresponding power battery to be detected are preset in the server,
if the recovery voltage is smaller than the preset recovery voltage, the server judges that the recovery capability of the battery to be tested is unqualified, sends an additional shock absorption alarm and prompts a single power battery with additional shock absorption to be tested;
if the recovery voltage is not less than the preset recovery voltage, the server further judges according to the recovery time;
if the recovery time length is not greater than the preset recovery time length, the server judges that the recovery capability of the battery to be detected is qualified;
and if the recovery time length is less than the preset recovery time length, the server judges that the recovery capacity of the battery to be tested is unqualified, sends an additional shock absorption alarm and prompts that the single power battery with additional shock absorption is tested.
Specifically, for the ith power battery to be tested, the corresponding standard discharge time length is Ti, the actual discharge time length measured by the server is Ti', and the server calculates the discharge time length ratio TFi of the ith power battery to be tested, wherein TFi =
The server is provided with a first preset discharge time length ratio TF alpha and a second preset discharge time length ratio TF alphaPresetting a discharge time length ratio TF beta, wherein TF alpha is more than 1 and less than TF beta, the first preset discharge time length ratio TF alpha is a maximum error discharge time length ratio, the second preset discharge time length ratio TF beta is a maximum qualified discharge time length ratio, the server compares TFi with TF alpha and TF beta to determine the actual capacity change of the power battery to be tested in the shaking amplitude test through the discharge time length ratio,
if TFi is less than 1, the server judges that the discharge power of the power battery to be tested is wrong, and adjusts the voltage detection module to change the discharge power of the power battery to be tested, and meanwhile, the shaking amplitude test is carried out again;
if TFi is not less than 1 and not more than TF alpha, the server judges that the capacity change of the power battery to be tested is in a reasonable fluctuation range, and judges that the ith power battery to be tested is qualified;
if the TF alpha is larger than TFi and smaller than or equal to TF beta, the server judges that the capacity change of the power battery to be tested is in an allowable range, and further judges according to the capacity recovery condition of the ith power battery to be tested;
and if the TF beta is less than the TFi, the server judges that the capacity change of the power battery to be tested is too high, and judges that the ith power battery to be tested is unqualified.
The method for testing the discharge time length ratio of the power battery is utilized, so that the capacity of the power battery is tested, the probability of wrong unqualified judgment is effectively reduced, and the accuracy of detecting the stability of the power battery is further improved.
Specifically, for the power battery to be tested with the i-th capacity within the tolerable range, the server controls the ship simulation module to stop moving, controls the voltage detection module to control the power battery to be tested to continue discharging until the power battery to be tested finishes discharging, measures the temperature of the power battery to be tested and transmits the temperature data of the power battery to be tested to the server, the server is provided with a preset temperature corresponding to the power battery to be tested, measures the time ti of the power battery to be tested reaching the preset temperature, the server is provided with a preset time t alpha, wherein the preset time t alpha is more than 0 and is the maximum qualified time, and the server compares the time ti with the time t alpha to determine the capacity recovery performance of the power battery to be tested,
if ti is less than or equal to t alpha, the server judges that the capacity recovery time length of the ith power battery to be tested is qualified, and judges that the capacity recovery performance of the ith power battery is qualified;
and if t alpha is less than ti, the server judges that the capacity recovery time length of the ith power battery to be tested is unqualified, and judges that the capacity recovery performance of the ith power battery is unqualified.
The capacity recovery performance of the battery is judged by testing the battery capacity recovery duration, and the accuracy of detecting the stability of the power battery is further improved while the reliability of judging the stability of the battery is effectively improved.
Specifically, for the ith power battery, if the server judges that the capacity recovery performance of the ith power battery is not qualified, the server sends an additional damping alarm and prompts the testing of the ith power battery with additional damping.
When the capacity recovery performance of the power battery is unqualified, the server judges that the power battery is additionally damped, the qualification rate of the power battery is effectively improved, and meanwhile, the accuracy of detecting the stability of the power battery is further improved.
Particularly, when the server controls the ship simulation module to test a single power battery to be tested, the power battery to be tested generates pressure on each elastic measurement module, each pressure curve is transmitted to the server by the elastic measurement module, wherein in the test process, the vector sum value of the pressure on each elastic measurement module is changed periodically, for the single power battery to be tested, the corresponding preset maximum pressure value is stored in the server, if the vector sum value of the pressure is smaller than the preset maximum pressure value in two continuous adjacent periods, the server judges that the electrolyte in the power battery to be tested generates shaking amplitude, and judges that the capacity of the power battery to be tested is damaged.
For the ith power battery to be tested, a corresponding preset maximum pressure value F0i is arranged in the server, the vector sum of the pressure generated by the elastic measurement module is changed periodically during testing, the maximum pressure is obtained when the vector sum reaches the peak value, the server receives and calculates the pressure measured by the elastic measurement module in real time during testing, the nearest maximum pressure is recorded as Fi, and the Fi is compared with the F0i to determine the shaking amplitude condition of the electrolyte,
if the Fi is larger than or equal to the F0i, the server judges that the shaking amplitude of the electrolyte is in an allowable range and judges that the ith power battery to be tested is not damaged;
if Fi is less than F0i, the server judges that the shaking amplitude of the electrolyte exceeds the allowable range, and judges that the ith power battery to be tested is damaged.
Furthermore, the elastic measurement module is used for measuring the pressure corresponding to each direction during testing so as to judge the shaking amplitude condition of the electrolyte in the battery, judge whether the battery is damaged or not according to the shaking amplitude condition, and effectively improve the accuracy of detecting the stability of the power battery while judging the damage of the battery.
Specifically, a maximum temperature threshold value is set in the server, and if the server controls the temperature detection module to detect that the temperature of the ith power battery to be detected exceeds the maximum temperature threshold value, the server sends out a battery abnormity alarm and stops the test.
The mode of monitoring the temperature is utilized to monitor unsafe factors caused by detection, so that the safety of the detection process is effectively improved, and the accuracy of detecting the stability of the power battery is further improved.
Fig. 2 is a schematic structural diagram of a power battery detection apparatus according to an embodiment of the present invention, including:
the simulation device is placed on the ground and used for bearing the power battery to be tested;
the voltage detection device is fixed on the simulation device, is connected with the power battery to be tested and is used for testing the discharge capacity of the power battery to be tested;
the temperature detection device comprises a plurality of detection heads which are respectively connected with each part of the power battery to be detected and used for detecting the temperature of the power battery to be detected in the test process;
and the processor is respectively connected with the simulation device, the voltage detection device and the temperature detection device and is used for controlling and analyzing the stability of the power battery to be detected.
Wherein, analogue means 1 is located the check out test set below for simulate the wave and rock the range to the power battery 4 that awaits measuring, and the power battery 4 that awaits measuring is settled in the objective table on analogue means 1 to link to each other with voltage detection device 2, and voltage detection device 2 sets up on analogue means 1, is used for discharging and detecting its voltage variation to the power battery 4 that awaits measuring, and temperature-detecting device 3 sets up on the power battery 4 that awaits measuring and connecting wire, is used for measuring the temperature variation.
The detection equipment is formed by connecting the simulation device, the voltage detection device and the temperature detection device with the processor, so that the accuracy of detecting the stability of the power battery is further improved while the association degree of the equipment is effectively improved.
Please refer to fig. 3, which is a schematic structural diagram of a simulation apparatus according to an embodiment of the present invention, including:
the objective table is arranged at the top of the simulation device and used for bearing and fixing the power battery to be tested;
the lifting rods are respectively connected with the objective table and used for controlling the objective table to simulate the state of a power battery to be tested in the running process of the ship;
and the motors are respectively connected with the lifting rods and used for providing power for the lifting rods and controlling the movement frequency of the lifting rods.
The lifting rod 11 is connected with the objective table and used for controlling the objective table to simulate sea waves through reciprocating motion, and the motor 12 is arranged at the bottom of the simulation device and used for providing power for the driven wheel 13, so that the driven wheel 13 drives the lifting rod 11 to move.
Through the mode that sets up objective table, a plurality of lifter and a plurality of motor in analogue means, when effectively having promoted the check out test set controllability, further promoted the accuracy that detects power battery stability.
Specifically, the voltage detection device includes:
the constant current discharge instrument is connected with the power battery to be tested and is used for discharging the power battery to be tested;
and the voltmeter is connected with the constant current discharge instrument and used for testing the voltage change of the power battery to be tested in the testing process.
Through the mode that sets up constant current discharge appearance and voltmeter in voltage detection device, when effectively having reduced external influence, further promoted the accuracy that detects power battery stability.
Please refer to fig. 4, which is a schematic position diagram of an elasticity measuring apparatus according to an embodiment of the present invention,
each elasticity measuring device 5 is fixed around the side wall of the objective table and clamped on the power battery 4 to be tested, so as to receive the impulse generated by the power battery 4 to be tested along with the movement of the simulation device and transmit the pressure brought by the corresponding impulse to the processor during testing.
The single elasticity measuring device comprises:
the plurality of impact blocks are respectively arranged on the side wall of the objective table and clamped around the power battery to be tested so as to buffer the power battery to be tested;
and the pressure sensors are respectively arranged in the impact blocks and correspond to the impact blocks so as to measure the pressure of the impact blocks at the corresponding positions on the power battery to be tested in the test process.
Through the mode that sets up a plurality of striking pieces and a plurality of pressure sensor in elasticity measuring device, when effectively having reduced because of striking battery check out test set leads to the risk of the battery damage that awaits measuring, increased the interference immunity of battery itself to the accuracy of detecting the power battery stability has further been promoted.
The process of testing using the above method and apparatus is as follows:
corresponding test modes are selected according to the theoretical capacity of the battery, and the battery with total electric quantity of 5000kW & h and the battery with total electric quantity of 7500kW & h are taken as examples:
wherein the server judges that the ship with the total loading electric quantity of 5000 kW.h is an offshore ship, the ship with the total loading electric quantity of 7500 kW.h is an open-sea ship,
and 5000 kW.h and 7500 kW.h batteries are respectively placed in a simulation device for testing,
taking the maximum shaking amplitude of offshore sea waves as 3m and the frequency as 2 times/s as an example, the maximum shaking amplitude of the offshore sea waves as 5m and the frequency as 6 times/s as an example, after corresponding batteries are placed in a simulation device, the simulation device is electrified by the batteries, the maximum shaking amplitude of the batteries with the power of 5000 kW.h is 3m, the maximum shaking amplitude of the batteries with the frequency of 2 times/s and 7500 kW.h is 5m and the shaking amplitude of the batteries with the frequency of 6 times/s is measured until the corresponding batteries lose power supply capacity,
at this time, the temperature of the corresponding battery is detected, timing is started until the temperature is recovered to the room temperature, at this time, the time length of the recovery is compared,
taking a 5000kW & h battery as an example, the length of the standard recovery time is 2min, if the recovery time to the room temperature is 2min20s, the recovery capability is determined to be unqualified, and if the recovery time to the room temperature is 1min55s, the periodic recovery capability of the disc is qualified;
according to the test method, the recovery capability of the chemical energy stored in the power battery can be known, so that the power supply stability and the recovery capability of the power battery are kept when the extreme or critical extreme condition is met, and the overall safety of the ship is improved.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A marine power battery detection system, comprising:
the ship simulation module is arranged below the power battery to be tested and used for simulating the critical state of the power battery in the running process of a ship; when detection is carried out, a plurality of power batteries to be detected are sequentially arranged on the ship simulation module and are respectively detected;
the detection module is arranged on the ship simulation module, the lead of the power battery to be detected and the shell, comprises a plurality of detection heads arranged on the power battery to be detected and the lead and is used for detecting the voltage and the temperature of the power battery to be detected;
the elastic measurement module is arranged in the ship simulation module, comprises a plurality of buffer devices and a plurality of pressure detection devices and is used for detecting the pressure of the battery on each buffer device in the running process of the ship;
the server is respectively connected with the ship simulation module, the detection module and the elasticity measurement module, and is used for controlling the test state of the battery to be tested, receiving a voltage change signal, a temperature change signal and a pressure signal and alarming the stability of the power battery to be tested;
the ship simulation module comprises a plurality of lifting rods driven by a motor and used for simulating the motion of the power batteries to be tested in sea waves, and the server controls the ship simulation module to shake the power batteries to be tested in a preset simulation mode so as to simulate the state of the shake amplitude of the ship in a corresponding critical environment;
the power battery to be detected is arranged on the ship simulation module at a preset interval to simulate a power battery pack in a ship, and each detection head of the detection module detects the temperature and the voltage of each part in the power battery pack at a preset period during detection so as to detect the voltage and the temperature fluctuation generated by constant current discharge of the battery in the critical environment;
the elasticity measuring module is arranged in the ship simulation module and clamps the power battery to be detected, the server controls the ship simulation module to perform detection corresponding to the power battery to be detected in a preset simulation mode according to the shaking amplitude, the battery to be detected impacts the elasticity measuring module by preset impulse according to the shaking amplitude, and meanwhile, each pressure detecting device in the elasticity measuring module transmits the pressure value corresponding to each elasticity measuring module to the server by taking the preset pressure detection time as a period;
the server records the time length from the start of self-test to the constant-current discharge time of the single power battery to be tested in the critical environment until the voltage of the power battery to be tested begins to drop as the actual discharge time, and the server is provided with the standard discharge time corresponding to the power battery to be tested; the server acquires the actual discharge time length corresponding to the single power battery to be tested, calculates the actual discharge time length and the standard discharge time length corresponding to the single power battery to be tested, and judges the actual capacity change of the battery according to the comparison of the preset discharge time length;
the server controls the ship simulation module to test a single power battery to be tested, the power battery to be tested generates pressure to each elastic measurement module, each pressure curve is transmitted to the server by the elastic measurement modules, wherein in the test process, the numerical value of the vector sum of the pressure of each elastic measurement module is changed periodically, the server stores a corresponding preset maximum pressure value for the single power battery to be tested, if the vector sum of the pressure is smaller than the preset maximum pressure value in two continuous adjacent periods, the server judges that electrolyte in the power battery to be tested generates shaking amplitude, and judges that the capacity of the power battery to be tested is damaged.
2. The ship power battery detection system according to claim 1, wherein for a single power battery to be detected, when the server determines that the capacity of the power battery to be detected changes, the server controls the ship simulation module to stop simulating sea waves, and starts timing, when the temperature of the power battery is reduced to room temperature, the server stops timing, and the timing time period is recorded as the recovery duration of the power battery to be detected; when the power battery to be detected recovers to the room temperature, the server controls the detection module to continuously discharge the power battery to be detected and measure the corresponding recovery voltage of the power battery to be detected, and simultaneously, the server judges the recovery capability of the corresponding power battery according to the recovery voltage and the recovery time length, wherein the preset recovery voltage and the preset recovery time length of the corresponding power battery to be detected are preset in the server,
if the recovery voltage is smaller than the preset recovery voltage, the server judges that the recovery capability of the battery to be tested is not qualified, sends an additional shock absorption alarm and prompts a single power battery with additional shock absorption to be tested;
if the recovery voltage is not less than the preset recovery voltage, the server further judges according to the recovery duration;
if the recovery time length is not greater than the preset recovery time length, the server judges that the recovery capability of the battery to be tested is qualified;
and if the recovery time length is less than the preset recovery time length, the server judges that the recovery capacity of the battery to be tested is unqualified, sends an additional shock absorption alarm and prompts that the single power battery with additional shock absorption is tested.
3. The detection system for the power battery of the ship according to claim 2, wherein a maximum temperature threshold is set in the server, and if the server controls the detection module to detect that the temperature of a single power battery to be detected exceeds the maximum temperature threshold, the server sends out a battery abnormity alarm and stops the test.
4. A marine power cell detection apparatus using the system of any one of claims 1 to 3, comprising:
the simulation device is placed on the ground and used for bearing the power battery to be tested;
the voltage detection device is fixed on the simulation device, is connected with the power battery to be tested and is used for testing the discharge capacity of the power battery to be tested;
the temperature detection device comprises a plurality of detection heads which are respectively connected with each part of the power battery to be detected and used for detecting the temperature of the power battery to be detected in the test process;
the elastic measuring devices are arranged on the simulation device and used for buffering the power battery to be measured and measuring the pressure in the corresponding direction;
and the processor is respectively connected with the simulation device, the voltage detection device, the temperature detection device and each elasticity measurement device and is used for controlling and analyzing the stability of the power battery to be measured.
5. The marine power battery detection apparatus of claim 4, wherein the simulation means includes:
the objective table is arranged at the top of the simulation device and used for bearing and fixing the power battery to be tested;
the lifting rods are respectively connected with the objective table and used for controlling the objective table to simulate the state of a power battery to be tested in the running process of the ship;
the plurality of motors are respectively connected with the corresponding lifting rods and used for providing power for the lifting rods and controlling the motion frequency of each lifting rod;
the detection device includes:
the constant current discharge instrument is connected with the power battery to be tested and is used for discharging the power battery to be tested;
the voltmeter is connected with the constant current discharge instrument and used for testing the voltage change of the power battery to be tested in the testing process;
and the temperature probe is arranged on the power to be detected and is used for detecting the temperature change of the power battery to be detected.
6. The marine power battery detection apparatus of claim 5, wherein the elasticity measuring device includes:
the plurality of impact blocks are respectively arranged on the side wall of the objective table and clamped around the power battery to be tested so as to buffer the power battery to be tested;
and the pressure sensors are respectively arranged in the impact blocks and correspond to the impact blocks so as to measure the pressure of the impact blocks at the corresponding positions on the power battery to be tested in the test process.
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