CN217113074U - Automatic switching and control device for super capacitor module - Google Patents

Abstract

An automatic switching and control device for a super capacitor module comprises a power supply conversion module, a circuit board, an analog quantity sampling unit, a 485 communication module, a digital quantity input module, a digital quantity output module, a flag bit selection module and a CPU; the automatic switching and control device for the super capacitor module is provided, the configuration flexibility is increased by increasing judgment conditions, and related problems are solved. On one hand, the scheme can change the method of the correlation quantity comparison threshold value and the access through a register in the communication configuration device, and can adapt to different system configurations without changing the hardware configuration of the device; on the other hand, the ultra-capacity module can be controlled according to a specific switching command given by the system, and whether the system is equipped or not can be judged in a mode of detecting the terminal voltage of the motor, and the ultra-capacity module is allowed to be switched. The utility model has the characteristics of the configuration is nimble, and low cost guarantees system continuous operation etc.

Description

Automatic switching and control device for super capacitor module

Technical Field

The utility model belongs to the technical field of the switching control of electric capacity module, in particular to automatic switching of super capacitor module and controlling means.

Background

In the petroleum industry, energy generated by enabling the oil pumping unit to reciprocate is often consumed by energy consumption resistors. With the development and application of the technology of the super capacitor, the super capacitor is used as an energy storage element and widely applied to device energy recovery in wind power, photovoltaic, rail transit and energy industries. In the energy recovery process, the ultra-capacity module is used as an energy storage element, and can be frequently put into a system or disconnected from the system according to the requirement of storing and releasing energy of the system so as to ensure the balance of the affiliated electric network. And (3) giving a specific instruction according to the initial condition of the system, determining whether the super capacitor module is put into system operation, and matching the system operation requirement according to the control device correspondingly determined by the number of the super capacitor modules required by the system.

The switching control scheme of the super capacitor module, which is analyzed and described above, is a common scheme, and is simple and feasible. But it has the following problems in itself:

1. the condition for judging whether the super capacitor module can be switched is single, and if the super capacitor module fails, the super capacitor module cannot operate, so that a super capacitor switching system is broken down;

2. one set of device can only correspond to one application scene, and the system can not be flexibly configured when changed, thereby influencing the continuity of work.

The above description has the problems of single detection condition, poor matching, influence on normal working continuity (production efficiency) and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic switching of super capacitor module and controlling means to solve above-mentioned problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automatic switching and control device for a super capacitor module comprises a power supply conversion module, a circuit board, an analog quantity sampling unit, a 485 communication module, a digital quantity input module, a digital quantity output module, a flag bit selection module and a CPU; the power supply conversion module, the analog quantity sampling unit, the 485 communication module, the digital quantity input module, the digital quantity output module, the flag bit selection module and the CPU are all arranged on the circuit board, and the analog quantity sampling unit, the 485 communication module, the digital quantity input module, the digital quantity output module and the flag bit selection module are all connected to the CPU; the power supply conversion module is connected with the CPU, the analog quantity sampling unit, the 485 communication module, the digital quantity input module, the digital quantity output module and the zone bit selection module respectively.

Furthermore, the CPU is also connected with a state indicating module, and the power supply conversion module is connected with the state indicating module.

Further, the power conversion module is externally connected with a 24V power input; the analog quantity sampling unit is connected with the voltage of the external motor terminal, the bus voltage, the module voltage and the module temperature.

Furthermore, the 485 communication module is externally connected with an upper computer, the digital quantity input module is externally connected with an external switching value input, and the digital quantity output module is externally connected with an external switching value control output.

Furthermore, the power conversion module comprises a board power supply terminal, a first power conversion module, a second power conversion module and a third power conversion module, and the board power supply terminal, the first power conversion module, the second power conversion module and the third power conversion module are connected in sequence.

Furthermore, the analog quantity sampling unit comprises a voltage reference module, an alternating voltage sampling terminal, an alternating voltage sampling and conditioning module, a bus voltage sampling terminal, a bus voltage sampling and conditioning module, a module voltage sampling terminal, a module voltage sampling and conditioning module, a temperature sampling terminal and a temperature sampling and conditioning module; the alternating voltage sampling terminal is connected with the alternating voltage sampling and conditioning module, and the alternating voltage sampling and conditioning module is connected with the CPU; the voltage reference module is connected between the first power supply conversion module and the alternating voltage sampling and conditioning module; the bus voltage sampling terminal is connected with the bus voltage sampling and conditioning module, and the bus voltage sampling and conditioning module is connected with the CPU; the module voltage sampling terminal is connected with the module voltage sampling and conditioning module, and the module voltage sampling and conditioning module is connected with the CPU; the temperature sampling terminal is connected with the temperature sampling and conditioning module, and the temperature sampling and conditioning module is connected with the CPU.

Further, the flag bit selection module is a hardware flag bit generation module, and is configured to input a 1 or 0 level to the tag bit IO of the CPU in a manner of pulling up the resistor to 3.3V or pulling down the resistor to GND.

Further, the 485 communication module comprises a communication terminal and an isolation 485 communication module; the communication terminal is connected with the isolation 485 communication module, and the isolation 485 communication module is connected with the CPU.

Furthermore, the digital input module comprises a digital output terminal and an isolated digital output module, the digital output terminal is connected with the isolated digital output module, and the isolated digital output module is connected with the CPU.

Furthermore, the digital quantity output module comprises a digital quantity input interface and an isolated digital quantity input module, the digital quantity input interface is connected with the isolated digital quantity input module, and the isolated digital quantity input module is connected with the CPU.

Compared with the prior art, the utility model discloses there is following technological effect:

the utility model discloses a fully consider above-mentioned condition, provide an automatic switching of super capacitor module and controlling means, judge the condition through the increase, increase the configuration flexibility, solve relevant problem. On one hand, the scheme can change the method of the correlation quantity comparison threshold value and the access through a register in the communication configuration device, and can adapt to different system configurations without changing the hardware configuration of the device; on the other hand, the ultra-capacity module can be controlled according to a specific switching command given by the system, and whether the system is equipped or not can be judged in a mode of detecting the terminal voltage of the motor, and the ultra-capacity module is allowed to be switched. The utility model has the characteristics of the configuration is nimble, and low cost guarantees system continuous operation etc.

The utility model discloses thereby can realize under the same circumstances of hardware, thereby according to the different scene that the setting value adaptation of upper computer flexibility configuration device interior register of scene application environment. For example, the number of access modules is set, the system overvoltage and undervoltage threshold is modulated, and the module temperature protection threshold is set. The device has the characteristics of flexible configuration, low cost, high operation and maintenance efficiency and the like, and ensures that the whole system continuously operates without stopping in a mode of judging the voltage of the motor terminal; the system has the characteristics of flexible configuration, low cost, high operation and maintenance efficiency and the like through a communication issuing configuration mode.

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a detailed connection diagram of the structure of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to fig. 1 to 2, the innovative point of the present invention is that the system can be automatically switched through detection and communication settings according to the system adapted to the capacitor module, and the system status and the module operating status can be monitored during the operation.

1. Fig. 1 is a general diagram of an automatic switching and controlling device for a super capacitor module, which includes:

an external 24V power supply is converted into power for the CPU7, the analog quantity sampling unit 3, the 485 communication module 4, the digital quantity input module 5, the digital quantity output module 6, the zone bit selection module 8 and the state indication module 9 through the power conversion module 2 through the isolation power module. After the device is electrified, whether the device needs to work or not is judged through the switch state fed back by the digital quantity input module 5, if the device needs to work, whether the system has a fault or not is judged according to the sampled analog quantity state quantity, and in the fault-free state, the CPU determines whether the soft start is started through external given or through detecting the terminal voltage of the motor according to the input of the zone bit selection module 8. And during soft start, the bus voltage, the module temperature and the switching value state are monitored in real time, a normal operation mode is switched into after the soft start is finished, the CPU always detects the state of each quantity in the period, and the current state is displayed by real-time interaction of the communication module 4 and a background. The whole device judges whether the switching module is needed to automatically complete switching work according to a preset reference value and automatically switches out and gives an alarm to indicate when a fault occurs. The sub-module function includes:

(1) the super capacitor module automatic switching and control body device printed circuit board: as a functional carrier, all devices are gathered according to a design scheme.

(2) The power supply conversion module: and the 24V is converted into a positive 15V sampling conditioning module to supply power, the positive 15V is converted into a 5V to supply power for the communication module, and the 5V is converted into a 3.3V to supply power for the CPU and peripheral circuits thereof.

(3) Analog quantity detection and conditioning module: and the sampling conditioning of the three-phase voltage is completed as a judgment basis for judging whether the super capacitor can be switched or not, the sampling conditioning of the bus capacitor is completed as a basis for normal operation of the charging system, the sampling conditioning of the module voltage is completed as a basis for the soft start process and a basis for module state judgment, and the sampling conditioning of the module temperature is completed as a basis for module state judgment.

(4)485 communication module: and transmitting the system data acquired by the CPU to an upper computer or a background through an MODBUS RTU protocol, and providing an interface for the background or the upper computer to carry out variable setting on the device.

(5) The digital quantity input conversion module: the state of the switching value in the system is input through the optical coupling isolation module and is used as the basis for judging the state of the CPU model.

(6) The digital quantity output module: and controlling the model of a switching device of the system in a mode of optical coupling isolation and relay output according to the instruction of the CPU.

(7) A CPU: the device is used as a control center of the device, compares an input analog quantity signal with a preset reference value, comprehensively judges the state of the system by combining with an input signal of a digital quantity input module, uploads the state to an upper computer in a communication mode, and controls a digital quantity output module according to preset modulation so as to control a switching device and a power device in the whole system.

(8) A zone bit selection module: the CPU input high and low levels correspond to different starting judgment conditions in a resistor up and down pulling mode. The level 0 represents the input zone bit of the detected digital quantity, and the level 1 represents the zone bit of the three-phase voltage value of the detector side. The zone bit can also be issued by the upper computer through the 485 communication module, and when the zone bit is enabled by the upper computer, the hardware selection mode is invalid.

(9) A status indication module: the LED is used for indicating the running state of the system, different states correspond to different lamps and flashing modes, and the states can be synchronously displayed in a background through the 485 communication module.

The layout of the automatic switching and control device for the super capacitor is shown in fig. 2, wherein the automatic switching and control device is divided into 22 functional units, the connection between each functional unit is shown in fig. 2, and the detailed working principle is described as follows:

10 is a 24V power supply, and one part of the power supply directly supplies power to a digital quantity input terminal 29, an optical coupler primary side of a digital quantity input module 30, a digital quantity output terminal 27 and a secondary side of the digital quantity output module after optical coupling isolation; the other part supplies power to the sampling detection conditioning modules 16, 18, 20 and 22 and the later stage required 5V conversion power supply module 12 through the 24V to positive and negative 15V module 11. Meanwhile, the positive 15V is converted into a reference power supply of 3.3V by the voltage reference module 14 to provide a reference power supply for the sampling and conditioning module. The 15V to 5V power module 12 provides power for the 5V to 3.3V power conversion module 13, and the 3.3V output provides power for the CPU module 24, the digital input module 30, the digital output module 28, and the communication module 26. The three-phase AC wiring terminal 15 and the AC voltage sampling and conditioning module 16 jointly form an AC voltage sampling and conditioning channel, and are connected to the CPU24 for condition judgment. The bus voltage sampling terminal 17 and the bus voltage sampling conditioning module 18 jointly form a bus voltage sampling conditioning channel, and are connected to the CPU24 for condition judgment and state monitoring. The module voltage sampling terminal 19 and the module voltage sampling conditioning module 20 jointly form a module voltage sampling conditioning channel, and are connected to the CPU24 for condition judgment and state monitoring. The module temperature sampling wiring terminal 21 and the module temperature sampling conditioning module 22 jointly form a module temperature sampling conditioning channel, and are connected to the CPU24 for condition judgment and state monitoring. The hardware flag generation block 23 is connected to the CPU24 to give the determined flag. The communication wiring terminal 25 and the communication module 26 jointly form a 485 communication channel, and the 485 communication channel is accessed to the CPU24 to complete uploading and issuing of upper computer data. The digital input terminal 29 and the digital input module 30 jointly form the detection of the external system state information and are connected to the CPU24 for state monitoring and judgment. The digital output terminal 27 and the digital output module 28 together form a digital output channel, and are commanded by the CPU24 to control various power devices and switching devices of the external system.

(10) Board card power supply terminal: a 24V input power supply and an IO control power supply are provided for the whole board card;

(11) power conversion module 1: the 24V-to-positive and negative 15V isolated power supply provides power for voltage sampling detection and 5V power supply;

(12) the power supply conversion module 2 is a module for converting 15V into 5V and provides power supply for the temperature detection module and the 3.3V power supply;

(13) the power supply conversion module is a 3:5V to 3.3V module and provides power for the controller and peripheral circuits thereof;

(14) a voltage reference module: converting the voltage reference from 15V to 3.3V, and providing a reference power supply for AC sampling;

(15) ac voltage sampling terminal: providing an inlet for the access of an alternating voltage; providing an A/B/C three-phase interface;

(16) the alternating voltage sampling and conditioning module comprises: the accessed alternating voltage is lifted to the range which can be sampled by a CPU through high-resistance differential sampling, proportional scaling and reference;

(17) bus voltage sampling terminal: providing BUSP and BUSN interfaces for bus voltage access of a system;

(18) the bus voltage sampling and conditioning module comprises: the accessed direct-current voltage is lifted to a sampling range of a CPU (central processing unit) through high-resistance differential sampling, proportional scaling and reference (negative voltage signal acquisition);

(19) module voltage sampling terminal: providing interfaces for the total voltage of the super capacitor modules and the voltage sampling access of each module, and at least supporting 6-path module voltage sampling;

(20) module voltage sampling and conditioning module: carrying out high-resistance differential sampling and scaling on the accessed module voltage to a sampling range of a CPU (central processing unit);

(21) temperature sampling terminal: providing interfaces for the module temperature sensor and the environment temperature sensor;

(22) a temperature sampling and conditioning module; performing bridge conversion on a signal of the temperature sensor, and zooming the signal to a range which can be sampled by a CPU (central processing unit); (can support various NTC or PT100 temperature sensors)

(23) A hardware flag bit generation module: 1 or 0 level is input to a marking bit IO of a CPU in a mode of pulling up a resistor to 3.3V or pulling down the resistor to GND;

(24) controlling the CPU: and confirming a starting judgment condition through the value of the zone bit selection port, and controlling the digital output control port to guide the closing and the breaking of the automatic switching device according to the starting judgment condition. The voltage, the temperature, the working condition and the state feedback of each switch of the system are monitored in real time in the operation process of the whole device, so that the system works in an automatic switching state. And communicating with an upper computer in real time and displaying the system state.

(25) Communication terminal: providing a 485 interface for communication of a background or an upper computer;

(26) isolate 485 communication modules: a channel is provided between the 485 differential signal and the control CPU; the system state and system parameter configuration of the upper computer or the background real-time monitoring are realized, and the background setting of the software flag bit is realized.

(27) Digital value output terminal: providing an interface for a power device to be controlled by the system;

(28) the isolated digital quantity output module: converting the level signal output by the CPU into a signal which is required by a power device and has enough loading capacity; the output type is divided into a relay output type and a transistor collector open-circuit output type;

(29) digital quantity input interface: providing an input interface for state feedback of a switching device in the system;

(30) the isolated digital quantity input module: converting a state signal input by a system into a level signal which can be received by a CPU (central processing unit) in an optical coupling isolation mode;

(31) a state indication module: different flashing patterns of the LED represent different fault types.

Claims (10)

1. An automatic switching and control device for a super capacitor module is characterized by comprising a power supply conversion module (2), a circuit board (1), an analog quantity sampling unit (3), a 485 communication module (4), a digital quantity input module (5), a digital quantity output module (6), a zone bit selection module (8) and a CPU (7); the circuit board comprises a power supply conversion module (2), an analog quantity sampling unit (3), a 485 communication module (4), a digital quantity input module (5), a digital quantity output module (6), a flag bit selection module (8) and a CPU (7), wherein the analog quantity sampling unit (3), the 485 communication module (4), the digital quantity input module (5), the digital quantity output module (6) and the flag bit selection module (8) are all arranged on the circuit board (1), and are all connected to the CPU (7); the power supply conversion module (2) is connected with and respectively connected with the CPU (7), the analog quantity sampling unit (3), the 485 communication module (4), the digital quantity input module (5), the digital quantity output module (6) and the zone bit selection module (8).

2. The automatic switching and control device of the super capacitor module set according to claim 1, wherein the CPU (7) is further connected with a status indication module (9), and the power conversion module (2) is connected with the status indication module (9).

3. The automatic switching and control device of the super capacitor module as claimed in claim 1, wherein the power conversion module (2) is externally connected with a 24V power input; the analog quantity sampling unit (3) is connected with the voltage of the external motor terminal, the bus voltage, the module voltage and the module temperature.

4. The automatic switching and control device of the super capacitor module as claimed in claim 1, wherein the 485 communication module (4) is externally connected with an upper computer, the digital input module (5) is externally connected with an external switching value input, and the digital output module (6) is externally connected with an external switching value control output.

5. The automatic switching and control device for the super capacitor module as claimed in claim 1, wherein the power conversion module (2) comprises a board power supply terminal, a first power conversion module, a second power conversion module and a third power conversion module, and the board power supply terminal, the first power conversion module, the second power conversion module and the third power conversion module are connected in sequence.

6. The automatic switching and control device of the super capacitor module set according to claim 5, wherein the analog sampling unit (3) comprises a voltage reference module, an alternating voltage sampling terminal, an alternating voltage sampling and conditioning module, a bus voltage sampling terminal, a bus voltage sampling and conditioning module, a module voltage sampling terminal, a module voltage sampling and conditioning module, a temperature sampling terminal and a temperature sampling and conditioning module; the alternating voltage sampling terminal is connected with the alternating voltage sampling and conditioning module, and the alternating voltage sampling and conditioning module is connected with the CPU; the voltage reference module is connected between the first power supply conversion module and the alternating voltage sampling and conditioning module; the bus voltage sampling terminal is connected with the bus voltage sampling and conditioning module, and the bus voltage sampling and conditioning module is connected with the CPU; the module voltage sampling terminal is connected with the module voltage sampling and conditioning module, and the module voltage sampling and conditioning module is connected with the CPU; the temperature sampling terminal is connected with the temperature sampling and conditioning module, and the temperature sampling and conditioning module is connected with the CPU.

7. The automatic switching and control device of the super capacitor module as claimed in claim 1, wherein the flag bit selection module (8) is a hardware flag bit generation module, and is configured to input 1 or 0 level to the tag bit IO of the CPU in a manner of pulling up the resistor to 3.3V or pulling down the resistor to GND.

8. The automatic switching and control device of the super capacitor module as claimed in claim 1, wherein the 485 communication module (4) comprises a communication terminal and an isolation 485 communication module; the communication terminal is connected with the isolation 485 communication module, and the isolation 485 communication module is connected with the CPU.

9. The automatic switching and control device of the super capacitor module as claimed in claim 1, wherein the digital input module (5) comprises a digital output terminal and an isolated digital output module, the digital output terminal is connected with the isolated digital output module, and the isolated digital output module is connected with the CPU.

10. The automatic switching and control device of the super capacitor module as claimed in claim 1, wherein the digital output module (6) comprises a digital input interface and an isolated digital input module, the digital input interface is connected with the isolated digital input module, and the isolated digital input module is connected with the CPU.

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