CN217115680U - Multisource storage battery intelligent monitoring and detecting device - Google Patents
Multisource storage battery intelligent monitoring and detecting device Download PDFInfo
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- CN217115680U CN217115680U CN202220527710.XU CN202220527710U CN217115680U CN 217115680 U CN217115680 U CN 217115680U CN 202220527710 U CN202220527710 U CN 202220527710U CN 217115680 U CN217115680 U CN 217115680U
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Abstract
The utility model particularly relates to a device is examined to multisource battery intelligence prison belongs to the battery technical field that discharges, and the problem that solve is that current battery discharge device all can't be equipped with backup power, prevents that the battery from maintaining unable power supply because of doing to discharge. The adopted scheme is as follows: the monitoring system comprises a direct current bus, a control system, a monitoring system and a battery system, wherein the direct current bus is connected with the battery system, and the battery system comprises a storage battery pack and a backup power supply. The control system comprises a control module, a load, a contactor K1, a contactor K2 and a non-return diode connected with a contactor K1 in parallel; if the equipment monitors that the voltage of the direct current system rapidly drops, the control module can control the contactor to perform power supply switching action, so that the storage battery pack is connected with the direct current system and starts to supply power, the backup power supply is connected to the direct current bus in parallel, the direct current bus is prevented from being suddenly powered off or the storage battery pack is prevented from being abnormal when the storage battery pack discharges, and accidents caused by abnormal power supply of the direct current bus are avoided.
Description
Technical Field
The utility model discloses battery discharge technical field, concretely relates to device is examined to multisource battery intelligence prison.
Background
The DC power supply system is applied to hydraulic power plants, thermal power plants, various transformer substations and the like, and provides DC power supply for signal equipment, automatic devices, emergency lighting, emergency power supply and breaker opening and closing operations. The direct current power supply system is an independent power supply, is not influenced by a generator, auxiliary power and a system operation mode, and is continuously provided with the direct current power supply under the condition that external alternating current is interrupted, so that normal operation of system equipment is guaranteed.
The storage battery pack is a core part of the direct-current power supply system, and the storage battery has the function of timely supplying power if the power grid fluctuates or is interrupted, so that the production safety is guaranteed. When the power direct-current operation power supply system loses power and the storage battery pack cannot supply power to the load in time, the power load and the control load equipment cannot work, large power supply accidents are often caused, the power loss of the whole direct-current system is caused, and even the power loss of the whole transformer substation causes huge loss.
To monitor the health of the battery, the battery is typically periodically discharged for maintenance. However, the conventional battery discharge device has the following problems:
1. a backup power supply cannot be equipped, if a direct-current power supply system has a problem in the discharging process of the storage battery pack, the storage battery pack cannot be switched in time due to a discharging test, or the storage battery pack cannot be supplied with power in a sufficient amount due to abnormality, a power failure accident can be caused;
2. the storage battery is completely discharged by manual operation, people are required to place discharge equipment on site every time, manpower is wasted, and meanwhile, the probability of safety accidents is increased due to complex wiring work.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art exists not enough, provides a device is examined to multisource battery intelligence prison.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a device is examined in intelligence prison of multisource battery, includes battery system, monitored control system, battery system includes storage battery and back-up power supply that connect in parallel each other, storage battery and back-up power supply are connected with direct current bus.
The monitoring system comprises a voltage sensor and a current sensor, wherein the voltage sensor and the current sensor are connected with the direct current bus and the storage battery pack and are used for collecting voltage and current information of the direct current bus and the storage battery pack, converting the voltage and current information into electric signals and transmitting the electric signals to the control system.
The control system comprises a control module, a non-return diode, a contactor K1, a contactor K2 and a load, wherein the contactor K1, the contactor K2 and the load are respectively connected with the control module; the contactor K1 is connected with the storage battery pack, the direct-current bus and the backup power supply and used for receiving a control instruction to be switched on or switched off so as to realize the on-off of a charging loop; the contactor K2 is connected with the storage battery pack and a load and used for receiving a control instruction to be closed or opened so as to realize the on-off of a discharging loop; the control module is used for receiving electric signals of the voltage sensor and the current sensor, calculating and judging whether a direct current bus is powered by a battery system or not in real time based on the measured voltage and current parameters, and issuing an instruction to control the on and off of the contactor K1 and the contactor K2; the non-return diode is connected with the contactor K1 in parallel, the negative electrode of the non-return diode is connected with the positive electrode of the direct current bus, and the positive electrode of the non-return diode is connected with the positive electrode of the storage battery pack and used for preventing the direct current bus and the backup power supply from discharging through the discharging loop during a discharging test.
The utility model can judge whether the discharge test can be carried out according to the states of the direct current bus and the storage battery; and in the discharging process, intelligent judgment can be realized, discharging can be actively interrupted, and the storage battery power supply state is switched. When the storage battery pack is subjected to an acquisition impact discharge or constant current discharge detection test, if the equipment monitors that the voltage of the direct current system rapidly drops, the control module controls the contactor to perform power supply switching action, so that the storage battery pack is connected with the direct current system and starts to supply power, and the backup power supply is connected to the direct current bus in parallel to prevent the direct current bus from being suddenly powered off or the storage battery pack from being abnormal when the storage battery pack discharges, so that accidents caused by abnormal power supply of the direct current bus are avoided. The utility model discloses do not need personnel to lay discharge apparatus to the scene, also saved loaded down with trivial details on-the-spot wiring work simultaneously, also reduced the probability that the incident takes place.
Furthermore, the load comprises an MOS tube with one end grounded and a plurality of thermistors connected in parallel, each thermistor is connected with one channel of the MOS tube in series, the thermistors are connected with the storage battery pack through the contactor K2, and the discharge current can be controlled by controlling the conduction number of the MOS tubes and the cooperation of the thermistors to carry out discharge work.
Furthermore, the monitoring system further comprises a temperature measurement module, wherein the temperature measurement module is used for detecting the temperature of the thermistor and the temperature of the MOS tube, converting the temperature information into an electric signal and transmitting the electric signal to the control module, the control module is connected with the fan, and the control module calculates and judges whether the thermistor and the MOS tube need to be cooled in real time based on the temperature parameter measured by the temperature measurement module and outputs a PWM signal to control the starting, stopping and rotating speed of the fan. Because the resistance value of the thermistor is sensitive to the temperature, the temperature of the thermistor is controlled by adjusting the rotating speed of the fan, and the purpose of adjusting the current is achieved.
Furthermore, the resistor is a PTC thermistor, and the resistance value of the resistor is larger as the current increases and the temperature rises, so that the current limiting function can be realized.
Furthermore, the temperature measuring module adopts a PT100 temperature sensor, and can convert temperature variables into transmittable digital output signals.
Furthermore, the control module is connected with an upper computer, the upper computer is connected with the control module through a communication module, monitoring data are received and displayed through the upper computer, control instructions can be issued through operation parameters of an upper computer control device, and the whole process of the storage battery discharge test is remotely monitored and controlled.
Furthermore, the communication module is an RS485 communication module, so that the networking function can be realized, the remote display and the online control can be realized, the monitoring data can be received and displayed in real time through the upper computer, and an online operator can issue a control instruction according to the real-time data and the parameters of the operation of the upper computer control device.
Furthermore, the control module is also connected with a clock chip RTC, and the control module confirms the discharge working time length and controls the timing discharge by reading the clock data of the clock chip RTC.
Furthermore, the control system also comprises a power module, and the power module is connected with the storage battery pack and supplies power for the intelligent monitoring device.
Further, contactor K2 is 100A/450V direct current contactor, contactor K1 is 200A/450V direct current contactor, and charging current is greater than discharge current, contactor K2 is normally open direct current contactor, contactor K1 is normally closed direct current contactor, can play the control circuit break-make and prevent the too big effect of electric current.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a control module 1, a voltage sensor 2, a current sensor 3, a temperature measuring module 4, a clock chip RTC 5, a fan 6, a thermistor 7, a communication module 8, an MOS (metal oxide semiconductor) tube 9, contactors K2, a power supply module 11, a storage battery pack 12, a forward diode 13, contactors K1, a direct current bus 15 and a spare battery 16.
Detailed Description
The following is a further description with reference to specific examples.
As shown in fig. 1, the intelligent monitoring device for a storage battery in this embodiment includes a battery system, a monitoring system, and a control system, where the battery system includes a storage battery pack 12 and a backup power supply 16 that are connected in parallel, and the storage battery pack 12 and the backup power supply 16 are connected to a dc bus 15, and supply power to the dc bus 15 when the voltage of the dc bus 15 drops.
The monitoring system comprises a voltage sensor 2 and a current sensor 3, wherein the voltage sensor 2 and the current sensor 3 are respectively connected with the direct current bus 15 and the storage battery pack 12 and are used for acquiring voltage and current information of the direct current bus 15 and the storage battery pack 12, converting the voltage and current information into analog signals and transmitting the analog signals to the control system.
The control system comprises a control module 1, a non-return diode 13, a contactor K114 and a load, wherein the control module 1 is electrically connected with the contactor K114, the contactor K210 and the load. The contactor K114 is connected with the positive electrode of the storage battery pack 12, the positive electrode line of the direct current bus 15 and the positive electrode of the backup power supply 16, and is used for receiving a control instruction of the control module 1 to be switched on or switched off, so that the charging loop is switched on or off; the negative pole of the storage battery pack 12 is grounded, and the positive pole of the backup power supply 16 is directly and electrically connected with the positive pole line of the direct current bus 15 and is not influenced by the closing and opening of the contactor K114; the negative terminal of the backup power supply 16 is grounded. In this embodiment, the contactor K114 is a 200A/450V dc contactor, the contactor K114 is in a normally closed state during charging, and when the voltage of the dc bus 15 is abnormal, the battery pack 12 and the backup power supply 16 supply power to the dc bus 15.
The contactor K210 is connected with the storage battery pack 12 and the load, and is used for receiving a control instruction of the control module 1 to close or open so as to realize the on-off of the discharging loop. In this embodiment, the contactor K210 is a 100A/450V dc contactor, and the contactor K210 is normally open during charging, so as to prevent the dc bus 15 and the backup power supply 16 from discharging through a load.
The control module 1 is used for receiving analog signals of the voltage sensor 2 and the current sensor 3, converting the analog signals into digital signals through an A/D converter integrated on the control module 1, calculating and judging whether the direct current bus 15 is powered by a battery system or not in real time based on voltage and current parameters of the direct current bus 15 and the storage battery pack 12 measured by the voltage sensor 2 and the current sensor 3, and issuing an instruction to control the on and off of the contactor K114 and the contactor K210;
the non-return diode 13 is connected in parallel with the contactor K114, the negative electrode of the non-return diode 13 is connected with the positive electrode of the direct current bus 15, the positive electrode of the non-return diode 13 is connected with the positive electrode of the storage battery pack 12, the contactor K210 is in a closed state during discharging, and the non-return diode 13 can prevent the direct current bus 15 and the backup power supply 16 from discharging through a discharging loop during a discharging test.
The load comprises an MOS (metal oxide semiconductor) transistor 9 and a plurality of thermistors 7 which are connected in parallel, as shown in FIG. 1, Q1-Q10 are a plurality of channels of the MOS transistor, R1-R10 are a plurality of thermistors, one end of the MOS transistor 9 is connected with the ground, each thermistor 7 is connected with one channel of the MOS transistor 9 in series, for example, R1 and Q1 are connected in series, R2 and Q2 are connected in series, and so on. The thermistor 7 is connected to the battery pack 12 through the contactor K210, and the thermistor 7 is a PTC thermistor whose resistance value increases stepwise with the increase in temperature, and when the current is too large, the resistance temperature increases to prevent the increase, thereby functioning as a current limiting function.
The monitoring system further comprises a temperature measurement module 4, the temperature measurement module 4 is used for detecting the temperature of the thermistor 7 and the temperature of the MOS tube 9, the temperature parameters are converted into output signals to be transmitted to the control module 1, the control module 1 is connected with the fan 6, the control module 1 receives the output signals of the temperature measurement module 4, based on the temperature parameters measured by the temperature measurement module 4, real-time calculation is carried out, whether the thermistor 7 and the MOS tube 9 need to be cooled down is judged, and PWM signals are output to control the starting and stopping and the rotating speed of the fan 6. The temperature measurement module adopts a PT100 temperature sensor, and can convert temperature variables into transmittable standardized output signals.
The control module 1 is connected with an upper computer through a communication module 8, and remote display and online control are achieved. In this embodiment, the communication module 8 is an RS485 communication module, and receives and displays the monitoring data to an on-line operator through an upper computer, and the operator can issue a control instruction through the parameters of the operation of the upper computer control device.
The control module 1 is also connected with a clock chip RTC 5, and the control module 1 confirms the discharge working time length and controls the timing discharge by reading the clock data of the clock chip RTC 5.
The control system further comprises a power supply module, wherein the power supply module 11 is connected with the storage battery pack 12 and used for regulating voltage to supply power to the intelligent monitoring device.
The working principle is as follows:
when the discharging operation is performed, the voltage and the current of the direct current bus 15 and the storage battery pack 12 are collected by the direct current voltage sensor 2 and the direct current sensor 3, the voltage and the current parameters are converted into electric signals to be transmitted to the control module 1, and the control module 1 judges whether the external alternating current is normal and whether the direct current bus 15 is powered by the storage battery pack 12 or the backup battery 16 according to the voltage and the current values of the direct current bus 15 and the storage battery pack 12 detected in real time. When the voltage of the external direct current bus is normal and the storage battery pack 12 and the standby battery 16 do not supply power to the direct current bus 15, the storage battery discharge test can be carried out at the moment, and the control module 1 transmits the detection data and the prompt information to the upper computer through the communication module 8 to be displayed.
Through the host computer, operating personnel issues the control command of carrying out the discharge test to control module 1, and control module 1 control contactor K114 disconnection and contactor K210 are closed, and control module 1 controls the way number that MOS pipe 9 switched on according to the conduction current scope. The control module 1 reads the discharge current value of the current transformer, reduces the rotating speed of the fan when the discharge current is smaller than the set current, increases the rotating speed of the fan when the discharge current is larger than the set current, reads the temperature collected by the temperature measurement module 4 at the same time, judges whether the temperature of the MOS tube 9 and the case exceeds the early warning value, and closes a discharge channel when the temperature exceeds the early warning value.
The backup power supply 16 is connected in parallel to the dc bus 15 to prevent the dc bus 15 from being suddenly interrupted when the battery pack 12 is discharged, thereby preventing the abnormal power supply phenomenon of the dc bus 15.
The control module 1 reads the voltage and current data of the storage battery pack 12 through the sensor, and judges various performance indexes of the storage battery pack 12.
During operation, the control module 1 monitors the voltage and current values of the storage battery pack 12 and the dc bus 15 in real time through the dc voltage sensor 2 and the dc current sensor 3 to determine whether to continue or terminate the discharging operation.
When the contactor K114 is turned off during discharge, the non-return diode 13 supplies power to the dc bus 15, and prevents the dc bus 15 and the backup power supply 16 from being discharged through the thermistor 7.
When the discharging is stopped, the control module 1 controls the contactor K210 and the MOS tube 9 to be switched off, the contactor K114 to be switched on, and the control module 1 controls whether the fan 6 continues to perform the cooling operation according to the current equipment temperature.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. It will be apparent to those skilled in the art that modifications and improvements can be made to the above-described embodiments without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention shall be covered by the appended claims.
Claims (10)
1. The intelligent monitoring and detecting device for the multi-source storage battery is characterized by comprising a battery system, a monitoring system and a control system, wherein the battery system comprises a storage battery pack (12) and a backup power supply (16) which are connected in parallel, and the storage battery pack (12) and the backup power supply (16) are connected with a direct-current bus (15);
the monitoring system comprises a voltage sensor (2) and a current sensor (3), wherein the voltage sensor (2) and the current sensor (3) are connected with a direct current bus (15) and a storage battery pack (12) and are used for acquiring voltage and current information of the direct current bus (15) and the storage battery pack (12), converting the voltage and current information into electric signals and transmitting the electric signals to the control system;
the control system comprises a control module (1), a non-return diode (13), a contactor K1 (14), a contactor K2 (10) and a load, wherein the contactor K1 (14), the contactor K2 (10) and the load are respectively connected with the control module (1);
the contactor K1 (14) is connected with the storage battery pack (12), the direct-current bus (15) and the backup power supply (16) and is used for receiving a control instruction to be closed or opened so as to realize the on-off of a charging loop;
the contactor K2 (10) is connected with the storage battery pack (12) and a load and used for receiving a control command to be closed or opened so as to realize the on-off of a discharge loop;
the control module (1) is used for receiving electric signals of the voltage sensor (2) and the current sensor (3), calculating and judging whether a direct current bus (15) is powered by a battery system or not in real time based on measured voltage and current parameters, and issuing instructions to control the on and off of the contactor K1 (14) and the contactor K2 (10);
the non-return diode (13) is connected with the contactor K1 (14) in parallel, the negative electrode of the non-return diode (13) is connected with the positive electrode of the direct current bus (15), and the positive electrode of the non-return diode (13) is connected with the positive electrode of the storage battery pack (12) and used for preventing the direct current bus (15) and the backup power supply (16) from discharging through a discharging loop during a discharging test.
2. The multi-source intelligent monitoring device for the storage battery according to claim 1, wherein the load comprises an MOS (metal oxide semiconductor) tube (9) with one end grounded and a plurality of thermistors (7) connected in parallel, each thermistor (7) is connected with one channel of the MOS tube (9) in series, and the thermistors (7) are connected with the storage battery pack (12) through the contactor K2 (10).
3. The intelligent monitoring device for the multi-source storage battery according to claim 2, wherein the monitoring system further comprises a temperature measuring module (4), the temperature measuring module (4) is used for detecting the temperatures of the thermistor (7) and the MOS (metal oxide semiconductor) tube (9) and converting the temperature information into an electric signal to be transmitted to the control module (1), the control module (1) is connected with the fan (6), the control module (1) calculates and judges whether the thermistor (7) and the MOS tube (9) need to be cooled in real time based on the temperature parameter measured by the temperature measuring module (4), and outputs a PWM signal to control the starting, stopping and rotating speed of the fan (6).
4. The intelligent monitoring and inspection device for the multi-source storage battery according to claim 3, wherein the thermistor (7) is a PTC thermistor.
5. The intelligent monitoring device for the multi-source storage battery according to claim 4, wherein the temperature measuring module (4) adopts a PT100 temperature sensor.
6. The intelligent monitoring and detecting device for the multi-source storage battery according to claim 5, wherein the control module (1) is connected with an upper computer, and the upper computer is connected with the control module (1) through a communication module (8).
7. The intelligent monitoring and detecting device for the multi-source storage battery according to claim 6, wherein the communication module (8) is an RS485 communication module.
8. The intelligent monitoring device for the multi-source storage battery according to claim 1, wherein the control module (1) is further connected with a clock chip RTC (5), and the control module (1) confirms the discharge working time length and controls the timing discharge by reading clock data of the clock chip RTC (5).
9. The intelligent multi-source storage battery monitoring device according to claim 1, wherein the control system further comprises a power module, and the power module (11) is connected with the storage battery pack (12) and supplies power to the intelligent monitoring device.
10. The intelligent monitoring and inspection device for the multi-source storage battery according to claim 1, wherein the contactor K2 (10) is a 100A/450V direct current contactor, and the contactor K1 (14) is a 200A/450V direct current contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220527710.XU CN217115680U (en) | 2022-03-11 | 2022-03-11 | Multisource storage battery intelligent monitoring and detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220527710.XU CN217115680U (en) | 2022-03-11 | 2022-03-11 | Multisource storage battery intelligent monitoring and detecting device |
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| CN217115680U true CN217115680U (en) | 2022-08-02 |
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| CN202220527710.XU Active CN217115680U (en) | 2022-03-11 | 2022-03-11 | Multisource storage battery intelligent monitoring and detecting device |
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- 2022-03-11 CN CN202220527710.XU patent/CN217115680U/en active Active
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