CN212784820U - Storage battery power supply optimization control system for suspension type monorail vehicle - Google Patents
Storage battery power supply optimization control system for suspension type monorail vehicle Download PDFInfo
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- CN212784820U CN212784820U CN202021560189.7U CN202021560189U CN212784820U CN 212784820 U CN212784820 U CN 212784820U CN 202021560189 U CN202021560189 U CN 202021560189U CN 212784820 U CN212784820 U CN 212784820U
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Abstract
The utility model discloses a battery power supply optimal control system for suspension type monorail vehicle belongs to battery power supply optimization technical field, contains flyback switching power supply, charge control circuit, on-vehicle battery, voltage conversion circuit and discharge control module, flyback switching power supply passes through charge control circuit and connects on-vehicle battery, flyback switching power supply contains EMI filter module, AC/DC conversion equipment, high frequency transformer and loop compensation module; the EMI filtering module is connected with a high-frequency transformer through an AC/DC conversion device, and the loop compensation module is respectively connected with the output end of the high-frequency transformer and the input end of the AC/DC conversion device; the vehicle-mounted storage battery is connected with the discharge control circuit through the voltage conversion circuit; the utility model discloses a change to voltage and electric current in the battery working process carries out the analysis, the working process of reasonable control battery to guarantee and improve the circulation life of battery.
Description
Technical Field
The utility model belongs to the intelligent monitoring field especially relates to a battery power supply optimal control system for suspension type monorail vehicle.
Background
The storage battery is widely applied to various industrial fields and daily life of people, and the service life of the storage battery is closely related to undercharge, overcharge and overdischarge. How to effectively ensure and improve the service life of the storage battery is an urgent problem to be solved in the design of a storage battery management system.
The design of the storage battery management system is mainly carried out from two aspects of charging and discharging, and the charging and discharging control strategies adopted in different application scenes are also emphasized respectively. At present, a charging strategy mainly adopts three-section charging, and hotter researches mainly adopt pulse charging, aiming at avoiding undercharging and overcharging of a storage battery; the discharge strategy mainly adopts a mode of setting threshold voltage, and aims to avoid over discharge of the storage battery.
Switching power supplies are widely used in almost all electronic devices due to their small size, light weight, and high efficiency, and are an indispensable power supply for the rapid development of the electronic information industry. The primary side feedback switch power supply saves space on a system board due to the fact that a structure of an optocoupler and a TL431 is omitted, reduces cost, improves reliability of the system, and is rapidly developed and widely applied to power supply management.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to the background provides a suspension type is battery power supply optimal control system for monorail vehicle, through carrying out the analysis to the change of battery working process in voltage and electric current, the working process of reasonable control battery to guarantee and improve the circulation life of battery.
The utility model adopts the following technical scheme to solve the technical problems
A storage battery power supply optimization control system for a suspension type monorail vehicle comprises a flyback switching power supply, a charging control circuit, a vehicle-mounted storage battery, a voltage conversion circuit and a discharging control module, wherein the flyback switching power supply is connected with the vehicle-mounted storage battery through the charging control circuit, and the vehicle-mounted storage battery is connected with the discharging control circuit through the voltage conversion circuit;
the flyback switching power supply comprises an EMI filtering module, an AC/DC conversion device, a high-frequency transformer and a loop compensation module; the EMI filtering module is connected with a high-frequency transformer through an AC/DC conversion device, and the loop compensation module is respectively connected with the output end of the high-frequency transformer and the input end of the AC/DC conversion device;
the discharge control module comprises a fuse, a vacuum relay, a DC/DC converter, a PWM rectifier, an alternating current filter, an isolation transformer, a circuit breaker, a terminal voltage detection module, a discharge current detection module and a microprocessor module;
the vehicle-mounted storage battery is connected with the DC/DC converter through a fuse and a vacuum relay respectively, the DC/DC converter is connected with the PWM rectifier, the PWM rectifier is connected with the circuit breaker through an alternating current filter and an isolation transformer in sequence, the microcontroller module is connected with the DC/DC converter and the PWM rectifier respectively, and the terminal voltage detection module and the discharge current detection module are connected with the microcontroller module respectively.
As a further preferred scheme of the storage battery power supply optimization control system for the suspension type monorail vehicle, the charge control circuit comprises a signal control end, a charge power end, an equipment power end, a battery end, a triode, a first MOS tube and a second MOS tube; the charging power supply end is grounded through a first resistor and a second resistor which are connected in series; the base electrode of the triode is respectively connected with the signal control end and the charging power supply end, the collector electrode of the triode is connected with the grid electrode of the second MOS tube through a fourth resistor and is also connected with the source electrode of the first MOS tube through a third resistor, and the emitting electrode of the triode is grounded; the source electrode of the second MOS tube is connected with the charging power supply end through a first diode, and the drain electrode of the second MOS tube is connected with the equipment power supply end; the source electrode of the first MOS tube is connected with the charging power supply end through a first diode, the grid electrode of the first MOS tube is connected with the connection point of the first resistor and the second resistor, and the drain electrode of the first MOS tube is connected with the battery end.
As a further preferred solution of the storage battery power supply optimization control system for the suspended monorail vehicle of the present invention, the EMI filter module includes a common mode inductor, an X capacitor, a Y capacitor, and a bleed-off resistor; the common-mode inductor consists of two coils wound in the same direction and is used for eliminating loop differential current; the X capacitor is connected in parallel with two sides of the common mode inductor and is used for eliminating differential mode interference; the Y capacitor is bridged at the output end and is connected in series with the midpoint to be grounded, so that common-mode interference is inhibited; the bleeder resistor is used to eliminate static buildup that occurs in the filter.
As a further preferred aspect of the present invention, the power supply optimization control system for a suspended monorail vehicle battery, the chip model of the PWM rectifier is IR 4427.
As the utility model relates to a suspension type is further preferred scheme of battery power supply optimal control system for monorail vehicle, discharge current detection module adopts hall sensor.
As the utility model relates to a battery powered optimization control system for suspension type monorail vehicle's further preferred scheme, isolation transformer contains opto-coupler U1, first resistance, the second resistance, the third resistance, the fourth resistance, fifth resistance and triode V1, the one end through first resistance connection second resistance on the IN1 input of opto-coupler U1, opto-coupler U1's the +12V voltage end is connected to the other end of second resistance, the anodal output of opto-coupler U1 passes through the collecting electrode of third resistance connection triode V1, the one end of fourth resistance and the one end of fifth resistance are connected to opto-coupler U1's negative pole output, triode V1's base is connected to the other end of fourth resistance, triode V1's projecting pole is connected to the other end of fifth resistance.
As the utility model relates to a suspension type is further preferred scheme of battery power supply optimal control system for monorail vehicle still contains a signal conditioning circuit, terminal voltage detection module, discharge current detection module are connected with the microcontroller module through signal conditioning circuit respectively, signal conditioning circuit contains amplifier circuit and two fortune band pass filter, amplifier circuit comprises OPA277 operational amplifier and resistance capacitance, two fortune band pass filter comprise 2 OPA277 operational amplifier.
As the utility model relates to a suspension type is further preferred scheme of battery power supply optimal control system for monorail vehicle, the chip model of microcontroller module is DSP-TMS320F2812 PGFA.
The utility model adopts the above technical scheme to compare with prior art, have following technological effect:
1. the utility model reasonably controls the working process of the storage battery by analyzing the change of voltage and current in the working process of the power supply storage battery, thereby ensuring and improving the cycle service life of the storage battery;
2. the AC-DC conversion device of the utility model omits an external starting circuit, thereby greatly reducing the power consumption of the starting part; the utility model adopts the close-sealing triode tube to realize starting, has low standby power consumption and high speed, and adopts the close-sealing technology, does not need high-pressure technology, is easy to realize and saves cost; when the utility model is short-circuited, the system automatically enters a fixed frequency mode, thereby improving the stability;
3. the EMI filtering module of the utility model comprises a common mode inductor, an X capacitor, a Y capacitor and a bleeder resistor, and can effectively filter the common mode and differential mode interference in the power grid, wherein the common mode inductor consists of two coils wound in the same direction and is used for eliminating the loop differential current; the X capacitor is connected in parallel with two sides of the common mode inductor and is used for eliminating differential mode interference; the Y capacitor is bridged at the output end and is connected in series with the midpoint to be grounded, so that common-mode interference is inhibited; the bleeder resistor is used to eliminate static buildup that occurs in the filter.
Drawings
FIG. 1 is a schematic diagram of the overall system of the present invention;
FIG. 2 is a schematic structural diagram of a flyback switching power supply of a battery power supply optimization control system for a suspended monorail vehicle of the utility model;
FIG. 3 is a schematic diagram of the structure of the discharge control module of the storage battery power supply optimization control system for the suspended monorail vehicle of the utility model;
fig. 4 is a circuit diagram of the charging control circuit of the present invention;
fig. 5 is a circuit diagram of the isolation transformer of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
A power supply optimization control system for a storage battery for a suspended monorail vehicle is shown in figure 1 and comprises a flyback switching power supply, a charging control circuit, a vehicle-mounted storage battery, a voltage conversion circuit and a discharging control module, wherein the flyback switching power supply is connected with the vehicle-mounted storage battery through the charging control circuit, and the vehicle-mounted storage battery is connected with the discharging control circuit through the voltage conversion circuit;
as shown in fig. 2, the flyback switching power supply includes an EMI filter module, an AC/DC converter, a high frequency transformer, and a loop compensation module; the EMI filtering module is connected with a high-frequency transformer through an AC/DC conversion device, and the loop compensation module is respectively connected with the output end of the high-frequency transformer and the input end of the AC/DC conversion device;
as shown in fig. 3, the discharge control module includes a fuse, a vacuum relay, a DC/DC converter, a PWM rectifier, an ac filter, an isolation transformer, a circuit breaker, a terminal voltage detection module, a discharge current detection module, and a microprocessor module;
the vehicle-mounted storage battery is connected with the DC/DC converter through a fuse and a vacuum relay respectively, the DC/DC converter is connected with the PWM rectifier, the PWM rectifier is connected with the circuit breaker through an alternating current filter and an isolation transformer in sequence, the microcontroller module is connected with the DC/DC converter and the PWM rectifier respectively, and the terminal voltage detection module and the discharge current detection module are connected with the microcontroller module respectively.
As shown in fig. 4, the charging control circuit includes a signal control terminal, a charging power supply terminal, a device power supply terminal, a battery terminal, a triode, a first MOS transistor and a second MOS transistor; the charging power supply end is grounded through a first resistor and a second resistor which are connected in series; the base electrode of the triode is respectively connected with the signal control end and the charging power supply end, the collector electrode of the triode is connected with the grid electrode of the second MOS tube through a fourth resistor and is also connected with the source electrode of the first MOS tube through a third resistor, and the emitting electrode of the triode is grounded; the source electrode of the second MOS tube is connected with the charging power supply end through a first diode, and the drain electrode of the second MOS tube is connected with the equipment power supply end; the source electrode of the first MOS tube is connected with the charging power supply end through a first diode, the grid electrode of the first MOS tube is connected with the connection point of the first resistor and the second resistor, and the drain electrode of the first MOS tube is connected with the battery end.
The EMI filtering module comprises a common-mode inductor, an X capacitor, a Y capacitor and a bleeder resistor; the common-mode inductor consists of two coils wound in the same direction and is used for eliminating loop differential current; the X capacitor is connected in parallel with two sides of the common mode inductor and is used for eliminating differential mode interference; the Y capacitor is bridged at the output end and is connected in series with the midpoint to be grounded, so that common-mode interference is inhibited; the bleeder resistor is used to eliminate static buildup that occurs in the filter.
The chip model of the PWM rectifier is IR 4427. The discharging current detection module adopts a Hall sensor.
As shown IN fig. 5, the isolation transformer includes an optocoupler U1, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor and a triode V1, one end of the second resistor is connected to the IN1 input end of the optocoupler U1 through the first resistor, the +12V voltage end of the optocoupler U1 is connected to the other end of the second resistor, the positive output end of the optocoupler U1 is connected to the collector of the triode V1 through the third resistor, the negative output end of the optocoupler U1 is connected to one end of the fourth resistor and one end of the fifth resistor, the base of the triode V1 is connected to the other end of the fourth resistor, and the emitter of the triode V1 is connected to the other end of the fifth resistor.
Still contain a signal conditioning circuit, terminal voltage detection module, discharge current detection module are connected with the microcontroller module through signal conditioning circuit respectively, signal conditioning circuit contains amplifier circuit and two fortune band pass filter, amplifier circuit comprises OPA277 operational amplifier and resistance capacitance, two fortune band pass filter comprise 2 OPA277 operational amplifier.
The microcontroller module is mainly responsible for carrying out relevant control on the DC/DC circuit and the PWM rectifier and collecting relevant signals of the sensor. The DC/DC converter mainly has the functions of converting the direct-current voltage of an external direct-current power supply to be tested into a value range required by system operation, regulating and controlling input power, and a fuse and a vacuum relay designed at the front end of the DC/DC converter are used for improving the reliability of the system; the PWM rectifier inverts the stable direct-current voltage output by the DC/DC converter into three-phase alternating-current voltage; the isolation transformer realizes the isolation of the storage battery discharge and the power grid, improves the safety performance of the test system, guarantees the personal safety of operators, and improves the adaptability of the storage battery discharge to tested power supplies. The filters and circuit breakers between the isolating transformer and the ac grid are intended to filter out the high-frequency harmonic pollution generated by the operation of the PWM rectifier and to completely remove the battery discharge from the grid when necessary.
The voltage detection module, namely the voltage sensor board, is used for detecting the voltage and the intermediate voltage of the storage battery and simultaneously completing the interface with other sensors. The voltage feedback uses LV 25-P. Measuring the voltage of the storage battery: the design is carried out according to 220V/10 mA, and the output relation is 200V-25 mA; measuring the voltage of an intermediate direct current link: designed according to 400V/10 mA, the output relationship is 400V-25 mA. In the F2812 control board, the corresponding sampling resistor is down-converted into 3V voltage, and the resistance is 120.0 omega. The sampling resistor on the F2812 control board should be a high-precision resistor with precision of more than 0.5%, and its maximum power consumption is 25 mA × 3V ═ 0.075W, so a 0.5W resistor can be used.
The hardware design of the microcontroller module adopts DSP-TMS320F2812PGFA as a core to realize the functions of processing feedback signals, A/D conversion, generation of control pulses of a DC/DC converter and a PWM rectifier, monitoring and control of the system running state, fault protection and storage, RS485 communication and the like, CPLD, SRAII, double-port RAM, a four-channel 14-bit A/D converter, a four-channel 12-bit D/A converter and the like are externally expanded, 16 paths of digital input channels and 16 paths of digital output channels are realized by using the CPLD, in addition, 16 paths of PWM output channels and eight paths of analog signal input and processing circuits are also provided, and the external serial interface comprises an isolated CAN bus interface conforming to the CAN 2.0A/B protocol, a USB bus interface conforming to the USBI.1 protocol, an SPI synchronous serial port and the like.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope. Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; go to
While the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a battery power supply optimal control system for suspension type monorail vehicle which characterized in that: the charging control circuit is connected with the vehicle-mounted storage battery through the charging control circuit, and the vehicle-mounted storage battery is connected with the discharging control circuit through the voltage conversion circuit;
the flyback switching power supply comprises an EMI filtering module, an AC/DC conversion device, a high-frequency transformer and a loop compensation module; the EMI filtering module is connected with a high-frequency transformer through an AC/DC conversion device, and the loop compensation module is respectively connected with the output end of the high-frequency transformer and the input end of the AC/DC conversion device;
the discharge control module comprises a fuse, a vacuum relay, a DC/DC converter, a PWM rectifier, an alternating current filter, an isolation transformer, a circuit breaker, a terminal voltage detection module, a discharge current detection module and a microcontroller module;
the vehicle-mounted storage battery is connected with the DC/DC converter through a fuse and a vacuum relay respectively, the DC/DC converter is connected with the PWM rectifier, the PWM rectifier is connected with the circuit breaker through an alternating current filter and an isolation transformer in sequence, the microcontroller module is connected with the DC/DC converter and the PWM rectifier respectively, and the terminal voltage detection module and the discharge current detection module are connected with the microcontroller module respectively.
2. A battery-powered optimal control system for a suspended monorail vehicle as defined in claim 1, wherein: the charging control circuit comprises a signal control end, a charging power end, an equipment power supply end, a battery end, a triode, a first MOS (metal oxide semiconductor) tube and a second MOS tube; the charging power supply end is grounded through a first resistor and a second resistor which are connected in series; the base electrode of the triode is respectively connected with the signal control end and the charging power supply end, the collector electrode of the triode is connected with the grid electrode of the second MOS tube through a fourth resistor and is also connected with the source electrode of the first MOS tube through a third resistor, and the emitting electrode of the triode is grounded; the source electrode of the second MOS tube is connected with the charging power supply end through a first diode, and the drain electrode of the second MOS tube is connected with the equipment power supply end; the source electrode of the first MOS tube is connected with the charging power supply end through a first diode, the grid electrode of the first MOS tube is connected with the connection point of the first resistor and the second resistor, and the drain electrode of the first MOS tube is connected with the battery end.
3. A battery-powered optimal control system for a suspended monorail vehicle as defined in claim 1, wherein: the EMI filtering module comprises a common-mode inductor, an X capacitor, a Y capacitor and a bleeder resistor; the common-mode inductor consists of two coils wound in the same direction and is used for eliminating loop differential current; the X capacitor is connected in parallel with two sides of the common mode inductor and is used for eliminating differential mode interference; the Y capacitor is bridged at the output end and is connected in series with the midpoint to be grounded, so that common-mode interference is inhibited; the bleeder resistor is used to eliminate static buildup that occurs in the filter.
4. A battery-powered optimal control system for a suspended monorail vehicle as defined in claim 1, wherein: the chip model of the PWM rectifier is IR 4427.
5. A battery-powered optimal control system for a suspended monorail vehicle as defined in claim 1, wherein: the discharging current detection module adopts a Hall sensor.
6. A battery-powered optimal control system for a suspended monorail vehicle as defined in claim 1, wherein: the isolation transformer includes: optocoupler U1, first resistance, the second resistance, the third resistance, the fourth resistance, fifth resistance and triode V1, the one end through first resistance connection second resistance on the IN1 input of optocoupler U1, the +12V voltage end of optocoupler U1 is connected to the other end of second resistance, triode V1's collecting electrode is connected through the third resistance to optocoupler U1's positive output end, the one end of fourth resistance and the one end of fifth resistance are connected to optocoupler U1's negative pole output end, triode V1's base is connected to the other end of fourth resistance, triode V1's projecting pole is connected to the other end of fifth resistance.
7. A battery-powered optimal control system for a suspended monorail vehicle as defined in claim 1, wherein: still contain a signal conditioning circuit, terminal voltage detection module, discharge current detection module are connected with the microcontroller module through signal conditioning circuit respectively, signal conditioning circuit contains amplifier circuit and two fortune band pass filter, amplifier circuit comprises OPA277 operational amplifier and resistance capacitance, two fortune band pass filter comprise 2 OPA277 operational amplifier.
8. A battery-powered optimal control system for a suspended monorail vehicle as defined in claim 1, wherein: the chip model of the microcontroller module is DSP-TMS320F2812 PGFA.
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| CN202021560189.7U CN212784820U (en) | 2020-07-31 | 2020-07-31 | Storage battery power supply optimization control system for suspension type monorail vehicle |
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| CN202021560189.7U CN212784820U (en) | 2020-07-31 | 2020-07-31 | Storage battery power supply optimization control system for suspension type monorail vehicle |
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