Recording and protecting device of variable-pitch super-capacitor testing equipment
By introducing components such as DC power supply, PLC controller and smoke alarm sensor into the supercapacitor testing equipment, the temperature and smoke conditions during the test are monitored in real time, and the problems of equipment damage and personal injury in the supercapacitor testing are solved, achieving safe Testing process.
Patent Information
- Application Number
- CN202323644807.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-29
AI Technical Summary
During the supercapacitor life test, the equipment is easily damaged due to heat generation, gas production, liquid leakage or explosion, resulting in equipment loss or personal injury. It is difficult for the existing technology to effectively monitor and prevent these risks.
A recording and protection device for a variable pitch supercapacitor testing equipment is designed, including DC power supply, power supply air switch, PLC controller, smoke alarm sensor, contactor and temperature sensor, which monitors the test time and temperature in real time and detects it. When smoke or overheating is used, cut off the power supply of the oven and charger to prevent the accident from worsening further.
It effectively avoids damage to supercapacitors due to long floating charging time or too high temperature, and promptly judges and prevents gas production, liquid leakage or explosion of supercapacitors during the life test, ensuring the safety of equipment and personnel.
Smart Images
Figure CN222319055U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of variable pitch control systems for wind turbine generator sets, and in particular relates to a recording and protection device for variable pitch supercapacitor testing equipment. Background Art
[0002] The variable pitch system is the core component of the wind turbine control system and an important part of its safety. When a wind turbine fails, the variable pitch system is required to change the pitch angle of the blades to achieve the purpose of braking. The variable pitch supercapacitor is an important part of the safety of the variable pitch system. When the wind turbine power grid fails or is disconnected from the grid, the variable pitch system is powered by the supercapacitor group to achieve braking.
[0003] The supercapacitors used in wind turbine pitch control systems have the advantages of high power density, fast charging speed, long cycle life, and wide operating temperature range. They are very suitable for backup power supply of wind turbine pitch control systems in harsh working environments. The life of supercapacitors used in conventional wind turbine pitch control systems is 10 years. In the selection process, the life of supercapacitors is expected to be tested. The accelerated aging test developed by Maxwell in the industry is usually used. The supercapacitor is charged to the rated voltage, the ambient temperature is maintained at 65°C, and after continuous floating charge for 1500 hours, its electrical performance is verified again to be normal.
[0004] In the supercapacitor life test, the equipment required includes a DC charger and an oven. In the process of verifying its life, the supercapacitor often generates heat, produces gas, leaks, or even explodes during the floating charge process due to the insufficient design life of the supercapacitor, causing equipment loss or personal injury. Therefore, when testing the supercapacitor life, it is necessary to add external recording and protection devices. Utility Model Content
[0005] In order to solve the problem in the prior art that the life test of a super capacitor may easily cause equipment loss or personal injury, the utility model provides a recording and protection device for a variable pitch super capacitor test device.
[0006] The utility model adopts the following technical solutions.
[0007] A recording and protection device for variable pitch supercapacitor testing equipment, comprising a DC power supply 1, a power supply air switch SB1, a PLC controller 4, a first smoke alarm sensor 9, a second smoke alarm sensor 10, a first contactor KM1, a second contactor KM2, and a temperature sensor 15:
[0008] The power air switch SB1 is disconnected when the recording and protection device of the variable pitch supercapacitor test equipment provided in the present application is in the stopped state, and is closed when the recording and protection device of the variable pitch supercapacitor test equipment provided in the present application is working. When the power air switch SB1 is closed, the PLC controller 4 is powered on and operates.
[0009] The PLC controller 4 is powered by a DC power supply 1, the positive pole of the power supply is connected to the positive terminal of the PLC controller 4 through the power air switch SB1, and the negative pole of the power supply is connected to the negative terminal of the PLC controller 4;
[0010] The modules connected to the PLC controller 4 also include a first bus terminal module 5, a second bus terminal module 6, a third bus terminal module 7 and a terminal module 8;
[0011] The first smoke alarm sensor 9 and the second smoke alarm sensor 10 contain a smoke detection device and a normally closed dry contact therein; the dry contact is connected in series to the second channel DI2 of the first bus terminal module 5, and when smoke is detected in the air, the dry contact is disconnected;
[0012] The positive pole of the coil of the first contactor KM1 is connected to the third channel DO1 of the second bus terminal module 6, and the negative pole is connected to the negative pole of the DC power supply 1; the positive pole of the coil of the second contactor KM2 is connected to the fourth channel DO2 of the second bus terminal module 6, and the negative pole is connected to the negative pole of the DC power supply 1;
[0013] The temperature sensor 15 and the super capacitor module 16 to be tested are placed in an oven 17 .
[0014] The first bus terminal module 5 is a digital input module, in which the first channel DI1 and the second channel DI2 are used. When a high level is introduced into the first channel DI1 and the second channel DI2, the PLC controller 4 will receive a control signal.
[0015] The second bus terminal module 6 is a digital output module, in which the third channel DO1 and the fourth channel DO2 are used. When the PLC controller 4 controls the signal output, the third channel DO1 and the fourth channel DO2 will output a high level.
[0016] The third bus terminal module 7 is a temperature measurement module, in which a first interface +R1 and a second interface -R1 are used. The first interface +R1 and the second interface -R1 are respectively connected to two signal lines of a temperature measurement element.
[0017] The first contactor KM1 and the second contactor KM2 are control devices for the oven 17 and the AC / DC charger 18; the first contactor contact 13 corresponding to the first contactor KM1 is connected to the power supply circuit of the oven 17; the second contactor contact 14 corresponding to the second contactor KM2 is connected to the power supply circuit of the AC / DC charger 18.
[0018] The temperature sensor 15 is a temperature measuring element, and its two signal lines are respectively connected to the first interface +R1 and the second interface −R1 of the third bus terminal module 7 ; the sensor end is placed inside the oven 17 .
[0019] The first channel DI1 of the first bus terminal module 5 is connected to a timing button 3 ; when the timing button 3 is pressed, the PLC controller 4 starts timing.
[0020] When the total time of the floating charge test of the supercapacitor module 16 under test is greater than 1500 hours, the PLC controller 4 controls the second bus terminal module 6 to stop the third channel DO1 and the fourth channel DO2 from outputting a high level, thereby de-energizing the first contactor KM1 and the second contactor KM2 coils, and then the first contactor contact 13 and the second contactor contact 14 are disconnected, and the oven 17 and the AC / DC charger 18 are powered off and stop running.
[0021] The configuration interface of the PLC controller 4 includes over-temperature record, total operating time display, oven temperature display, over-temperature number record, total over-temperature time record, reset button, AC power supply button, first smoke alarm sensor 9 status and second smoke alarm sensor 10 status.
[0022] The beneficial effect of the utility model is that the total duration of the supercapacitor life test and the temperature in the oven can be monitored in real time through the utility model, so as to avoid damage to the supercapacitor during the test due to too long floating charge time or too high temperature. At the same time, the utility model can also judge whether the supercapacitor produces gas, leaks or explodes during the life test by the smoke concentration in the ambient air. If a problem is found, the power supply of the oven and the charger can be cut off in time to prevent the accident from further deteriorating. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1The utility model is a schematic diagram of the installation structure of a recording and protection device for a variable pitch super capacitor test device, including: a DC power supply 1, a power air switch SB1, a timing button 3, a PLC controller 4, a first bus terminal module 5, a second bus terminal module 6, a third bus terminal module 7, a terminal module 8, a first smoke alarm sensor 9, a second smoke alarm sensor 10, a first contactor KM1, a second contactor KM2, a first contactor contact 13, a second contactor contact 14, a temperature sensor 15, a super capacitor module to be tested 16, an oven 17, and an AC / DC charger 18;
[0024] Figure 2 The present invention is a schematic diagram of a configuration interface of a recording and protection device for a variable pitch supercapacitor test device. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The embodiments described in this application are only part of the embodiments of the utility model, not all of them. Based on the spirit of the utility model, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the utility model.
[0026] like Figure 1 As shown, the present application discloses a recording and protection device for variable pitch supercapacitor testing equipment, including a DC power supply 1, a power supply air switch SB1, a PLC controller 4, a first smoke alarm sensor 9, a second smoke alarm sensor 10, a first contactor KM1, a second contactor KM2, and a temperature sensor 15:
[0027] The present embodiment uses a PLC controller 4 of model BX3100; a first bus terminal module 5 of model KL1408; a second bus terminal module 6 of model KL2408; a third bus terminal module 7 of model KL3204; and a terminal module 8 of model KL9010.
[0028] The power air switch SB1 is disconnected when the recording and protection device of the variable pitch supercapacitor test equipment provided in the present application is in the stopped state, and is closed when the recording and protection device of the variable pitch supercapacitor test equipment provided in the present application is working. When the power air switch SB1 is closed, the PLC controller 4 is powered on and operates.
[0029] The PLC controller 4 is powered by a DC power supply 1, the positive pole of the power supply is connected to the positive terminal of the PLC controller 4 through the power air switch SB1, and the negative pole of the power supply is connected to the negative terminal of the PLC controller 4;
[0030] The modules connected to the PLC controller 4 also include a first bus terminal module 5, a second bus terminal module 6, a third bus terminal module 7 and a terminal module 8;
[0031] The first smoke alarm sensor 9 and the second smoke alarm sensor 10 contain a smoke detection device and a normally closed dry contact therein; the dry contact is connected in series to the second channel DI2 of the first bus terminal module 5, and when smoke is detected in the air, the dry contact is disconnected;
[0032] The positive pole of the coil of the first contactor KM1 is connected to the third channel DO1 of the second bus terminal module 6, and the negative pole is connected to the negative pole of the DC power supply 1; the positive pole of the coil of the second contactor KM2 is connected to the fourth channel DO2 of the second bus terminal module 6, and the negative pole is connected to the negative pole of the DC power supply 1;
[0033] The temperature sensor 15 and the super capacitor module 16 to be tested are placed in an oven 17 .
[0034] The first bus terminal module 5 is a digital input module, in which the first channel DI1 and the second channel DI2 are used. When a high level is introduced into the first channel DI1 and the second channel DI2, the PLC controller 4 will receive a control signal.
[0035] The second bus terminal module 6 is a digital output module, in which the third channel DO1 and the fourth channel DO2 are used. When the PLC controller 4 controls the signal output, the third channel DO1 and the fourth channel DO2 will output a high level.
[0036] The third bus terminal module 7 is a temperature measurement module, in which a first interface +R1 and a second interface -R1 are used. The first interface +R1 and the second interface -R1 are respectively connected to two signal lines of a temperature measurement element.
[0037] The first contactor KM1 and the second contactor KM2 are control devices for the oven 17 and the AC / DC charger 18; the first contactor contact 13 corresponding to the first contactor KM1 is connected to the power supply circuit of the oven 17; the second contactor contact 14 corresponding to the second contactor KM2 is connected to the power supply circuit of the AC / DC charger 18.
[0038] The temperature sensor 15 is a temperature measuring element, and its two signal lines are respectively connected to the first interface +R1 and the second interface −R1 of the third bus terminal module 7 ; the sensor end is placed inside the oven 17 .
[0039] The first channel DI1 of the first bus terminal module 5 is connected to a timing button 3 ; when the timing button 3 is pressed, the PLC controller 4 starts timing.
[0040] When the total time of the floating charge test of the supercapacitor module 16 under test is greater than 1500 hours, the PLC controller 4 controls the second bus terminal module 6 to stop the third channel DO1 and the fourth channel DO2 from outputting a high level, thereby de-energizing the first contactor KM1 and the second contactor KM2 coils, and then the first contactor contact 13 and the second contactor contact 14 are disconnected, and the oven 17 and the AC / DC charger 18 are powered off and stop running.
[0041] The configuration interface of the PLC controller 4 includes over-temperature record, total operating time display, oven temperature display, over-temperature number record, total over-temperature time record, reset button, AC power supply button, first smoke alarm sensor 9 status and second smoke alarm sensor 10 status.
[0042] like Figure 2 As shown, close the power air switch SB1, the PLC controller 4 is powered on and runs, press Figure 2 The reset button in the configuration interface can clear 10 over-temperature record information and running time information.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.
Claims
1. A recording and protection device for a variable pitch supercapacitor test device, comprising a DC power supply (1), a power supply air switch (SB1), a PLC controller (4), a first smoke alarm sensor (9), a second smoke alarm sensor (10), a first contactor (KM1), a second contactor (KM2), and a temperature sensor (15), characterized in that: The PLC controller (4) is powered by a DC power supply (1), the positive electrode of the power supply is connected to the positive terminal of the PLC controller (4) through a power supply air switch (SB1), and the negative electrode of the power supply is connected to the negative terminal of the PLC controller (4); The modules connected to the PLC controller (4) further include a first bus terminal module (5), a second bus terminal module (6), a third bus terminal module (7) and a terminal module (8); The first smoke alarm sensor (9) and the second smoke alarm sensor (10) contain a smoke detection device and a normally closed dry contact therein; The positive pole of the coil of the first contactor (KM1) is connected to the third channel (DO1) of the second bus terminal module (6), and the negative pole is connected to the negative pole of the DC power supply (1); the positive pole of the coil of the second contactor (KM2) is connected to the fourth channel (DO2) of the second bus terminal module (6), and the negative pole is connected to the negative pole of the DC power supply (1); The temperature sensor (15) and the supercapacitor module (16) to be tested are placed in an oven (17).
2. According to claim 1, a recording and protection device for variable pitch supercapacitor testing equipment is characterized in that: The first bus terminal module (5) is a digital input module, in which a first channel (DI1) and a second channel (DI2) are used.
3. The recording and protection device for variable pitch supercapacitor testing equipment according to claim 1, characterized in that: The second bus terminal module (6) is a digital output module, in which the third channel (DO1) and the fourth channel (DO2) are used.
4. The recording and protection device for variable pitch supercapacitor testing equipment according to claim 1, characterized in that: The third bus terminal module (7) is a temperature measurement module, in which a first interface (+R1) and a second interface (-R1) are used. The first interface (+R1) and the second interface (-R1) are respectively connected to two signal lines of a temperature measurement element.
5. The recording and protection device for variable pitch supercapacitor testing equipment according to claim 1, characterized in that: The dry contacts inside the first smoke alarm sensor (9) and the second smoke alarm sensor (10) are connected in series to the second channel (DI2) of the first bus terminal module (5).
6. The recording and protection device for variable pitch supercapacitor testing equipment according to claim 1, characterized in that: The first contactor (KM1) and the second contactor (KM2) are control devices for the oven (17) and the AC / DC charger (18); the first contactor contact (13) corresponding to the first contactor (KM1) is connected to the power supply circuit of the oven (17); The second contactor contact (14) corresponding to the second contactor (KM2) is connected to the power supply circuit of the AC / DC charger (18).
7. The recording and protection device for variable pitch supercapacitor testing equipment according to claim 1, characterized in that: The temperature sensor (15) is a temperature measuring element, and its two signal lines are respectively connected to the first interface (+R1) and the second interface (-R1) of the third bus terminal module (7).
8. The recording and protection device for variable pitch supercapacitor testing equipment according to claim 7, characterized in that: The sensor end of the temperature sensor (15) is placed inside the oven (17).
9. A recording and protection device for variable pitch supercapacitor testing equipment according to claim 1 or 2, characterized in that: The first channel (DI1) of the first bus terminal module (5) is connected to a timing button (3).
10. The recording and protection device for variable pitch supercapacitor testing equipment according to claim 1, characterized in that: The configuration interface of the PLC controller (4) includes over-temperature record, total operating time display, oven temperature display, over-temperature number record, over-temperature total time record, reset button, AC power supply button, first smoke alarm sensor (9) status and second smoke alarm sensor (10) status.