CN216851353U - Control system of mobile power supply - Google Patents
Control system of mobile power supply Download PDFInfo
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- CN216851353U CN216851353U CN202123328076.1U CN202123328076U CN216851353U CN 216851353 U CN216851353 U CN 216851353U CN 202123328076 U CN202123328076 U CN 202123328076U CN 216851353 U CN216851353 U CN 216851353U
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Abstract
The utility model relates to a control system of a mobile power supply, the mobile power supply controls the on-off of a battery module by sending a control signal to the BMS module through a main switch, an MOS tube switch is arranged in the BMS module, the cathode of the battery module is connected with the input end of an inverter through the MOS tube switch, the battery end of a central controller is also connected with the cathode of the battery module through the MOS tube switch, the MOS tube switch controls the on-off of the battery module according to the switch signal of the main switch, the central controller can take over the control right according to the temperature and the current magnitude so as to realize the AC discharge automatic protection of the mobile power supply, because the MOS tube switch can rapidly control the on-off of the large current through the signal voltage with extremely low power consumption, the communication interface and the driving circuit of the BMS module are utilized, the communication between the BMS module data and the whole machine of the mobile power supply is realized, the control software of the central controller is combined, the control precision of the mobile power supply is greatly improved, has the obvious advantages of low power consumption, high reliability and low cost.
Description
Technical Field
The utility model relates to a portable power source technical field, concretely relates to portable power source's control system.
Background
The mobile power supply mainly comprises an inverter, a battery module, a controller and the like, is used for storing and converting electric energy, can be used as a power supply of various electric appliances and a clean energy source, and has wide application, such as: self-contained power supply, emergency power utilization, power supply and power generation in power-deficient areas and the like.
The conventional small-sized mobile power supply is generally weak in function, small in charging and discharging power, insufficient in control precision, high in cost and difficult to meet the use requirements of the mobile power supply on high precision, high power and large capacity. In addition, the hardware cost of the mobile power supply control system in the prior art is high, and the requirement of mobile power supply cost control is difficult to adapt.
To above-mentioned portable power source control system not enough, the utility model provides a portable power source's control system, adopt BMS (battery management system, for the abbreviation of batttery management system) module and central controller to realize portable power source charge-discharge control, heat energy management and human-computer interaction control, the control accuracy and the reliability of system have been improved greatly, BMS module embeds MOS pipe switch and communication interface, use greatly reduced system hardware cost and consumption with central controller's conventional control software cooperation, and increased functions such as thing networked control and multiple system protection on this basis, have obvious advantage with low costs and low power dissipation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem that prior art exists, provide a portable power source's control system.
For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
a control system of a mobile power supply, the system comprising an inverter, a central controller, a battery module, a BMS module, a main switch, an AC output interface, a DC output interface, and a charging interface, wherein:
the central controller is internally provided with a charging end, a battery end and a DC output interface, the charging end of the central controller is connected with the charging interface, the charging interface is connected with an external power supply, the battery end of the central controller is connected with the battery module, the central controller converts the output of the external power supply into charging voltage and charging current and charges the battery module through the battery end, and the central controller converts the output of the battery module into stable output direct current and outputs the stable output direct current through the DC output interface;
the input end of the inverter is connected with the battery module, a boosting module and an inverting module are arranged in the inverter, the boosting module converts low-voltage direct current from the battery module into high-voltage direct current, and the inverting module converts the high-voltage direct current into commercial power alternating current and outputs the commercial power alternating current through an AC output interface connected with the output end of the inverter;
the negative pole of battery module links to each other with the BMS module, be equipped with MOS pipe switch and communication interface in the BMS module, the negative pole of battery module passes through the MOS pipe switch and links to each other with the input of dc-to-ac converter, the battery end of central controller passes through the MOS pipe switch and links to each other with the negative pole of battery module, the MOS pipe switch is according to the switching signal control battery module's of main switch-on and shutoff, and when main switch opened, battery module and inverter input switch-on to battery module supplies power to the battery end of central controller, the communication interface links to each other with the central controller, and the central controller reads battery residual capacity SOC, voltage and current data from the BMS module through communication interface.
Furthermore, the main switch is connected with the BMS module through the central controller, the BMS module comprises a driving circuit, a switching signal of the main switch is sent to the driving circuit through the central controller, and the driving circuit controls the corresponding MOS tube to realize the switching action of the MOS tube switch.
Further, the BMS module is provided with a current sensor for detecting a current discharged or charged by the battery module, calculates the remaining capacity SOC of the battery module by using an integration algorithm according to the detected current, and transmits the calculated remaining capacity SOC data to the central controller.
Further, the BMS module is provided with a voltage sensor for detecting a voltage at which the battery module is discharged or charged, calculates a discharge or charge power of the battery module according to the detected voltage and current, and transmits the detected voltage and current and the calculated power data to the central controller through the communication interface.
Furthermore, the central controller is connected with a fan used for cooling the portable power source and a temperature sensor used for collecting the temperature of the portable power source, and the central controller controls the working state of the fan according to the collected temperature.
Further, the central controller is connected with a display screen of the mobile power supply and the WiFi monitor, the central controller sends and displays monitoring data at least containing the residual electricity SOC, the voltage, the current and the power to the display screen and the WiFi monitor, and the central controller receives control data from the display screen and the WiFi monitor.
Further, the external power supply comprises one or more of a solar panel, a mains supply AC, an automobile power supply, a wind power generator and a fuel generator.
Further, the stable output direct current comprises a stable 12V, 24V or USB direct current.
Furthermore, the system also comprises an AC switch, wherein the AC switch is connected with the inverter through a central controller, the AC switch is linked with the main switch, the AC switch is activated after the main switch is turned on, and the AC switch sends a control signal to the inverter to enable the inverter to be started up.
Further, the charging and discharging of the BMS module are the same, i.e., the charging port and the discharging port of the BMS module are the same.
The beneficial effects of the utility model are that:
the utility model discloses portable power source passes through the break-make of mode control battery module that main switch sent control signal for the BMS module, central controller can take over control right according to temperature and electric current size, in order to realize portable power source AC automatic protection that discharges, ensure portable power source's safety in utilization, because MOS pipe switch just can the break-make of rapid control heavy current through the signal voltage of extremely low consumption, utilize the communication interface and the drive circuit of BMS module, the communication of BMS module data and the whole machine of portable power source has been realized, combine central controller's conventional control software, portable power source's control accuracy has been improved greatly, and the power consumption is low, the reliability is high and with low costs obvious advantage.
Drawings
Fig. 1 is a block diagram of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, a control system of a portable power source mainly includes an inverter, a central controller, a battery module, a BMS module, a fan, various interfaces, and the like, wherein the central controller is integrally provided with or connected to a charging interface, an AC output interface, a DC output interface, a display screen, and the like, and can provide various direct current and alternating current outputs; the mobile power supply of the embodiment has a plurality of charging modes: the battery module can be charged by various alternating current or direct current power supplies such as a solar panel, a mains supply AC, an automobile power supply, a wind driven generator, a fuel generator and the like; the inverter is internally provided with a boosting module and an inverting module, can convert direct current from the battery module into commercial power alternating current, the output end of the inverter is connected with an AC output interface, and the mobile power supply realizes various charging, output control and protection functions through a central controller and a BMS module; the open single-headed arrows in fig. 1 indicate the transmission direction of the control signal, the open double-headed arrows indicate the bidirectional connection of the control signal, both transmission and reception, the solid single-headed arrows indicate the flow direction of the main circuit power, and the solid double-headed arrows indicate the bidirectional flow of the main circuit power, both charging and discharging.
As shown in fig. 1, the battery module, the BMS module, the display screen, the main switch, the AC switch, the upper computer, and the WiFi monitor of the present invention are all bidirectionally connected to the central controller; the battery module, the BMS module and the central controller are connected with each other through a communication interface, bidirectional control signals are sent and received between the BMS module and the central controller, and the central controller controls and protects the charging and discharging of the mobile power supply through the BMS module; the inverter is powered by the battery module, and the on-off of the inverter and the battery module is controlled by the BMS module, namely, the input end of the inverter is connected with the battery module through the BMS module; the charging and discharging data of the battery module are sent to the central controller through the BMS module, the central controller controls charging and discharging of the mobile power supply according to user operation, and output and charging interfaces of the mobile power supply are controlled and protected.
As shown in fig. 1, the cathode of the battery module of the present invention is connected to the BMS module, the BMS module is provided with an MOS transistor switch and a driving circuit, and the driving circuit drives the MOS transistor to realize the switching action according to the control signal; in this embodiment, the negative electrode of the battery module is connected to the negative electrode of the input terminal of the inverter through the MOS transistor switch, the central controller is provided with a charging terminal and a battery terminal, and the negative electrode of the battery terminal of the central controller is also connected to the negative electrode of the battery module through the MOS transistor switch; the positive electrode of the battery module is directly connected with the positive electrode of the input end of the inverter, and the positive electrode of the battery end of the central controller is also directly connected with the positive electrode of the battery module; the utility model discloses be provided with the main switch that controls the power station start or shut down on the portable power source, the main switch sends the on-off control signal to the drive circuit in the BMS module, and drive circuit realizes the switching action according to control signal drive MOS pipe; because the MOS tube switch is connected in series between the inverter and the battery module and also connected in series between the central controller and the battery module, the power supply of the inverter and the central controller can be controlled to be switched on and off through the MOS tube switch; the main switch is connected with the control end of the BMS module, when the main switch is opened, a switch signal is sent to the drive circuit of the BMS module, the drive circuit controls the closing of the MOS tube switch, so that the cathode of the battery module is connected with the cathode of the input end of the inverter, the cathode of the battery module is also connected with the cathode of the battery end of the central controller, and the battery module can supply power to the inverter and the central controller because the anode of the inverter and the anode of the central controller and the anode of the battery module are always in a connected state.
The mobile power supply of the embodiment is also provided with an AC switch, after the main switch is closed, although the battery module supplies power to the input end of the inverter, the inverter is still in a shutdown state, at this time, the inverter can be started to work only by sending a starting control signal to the inverter through the AC switch, and the AC switch can be acted only after the main switch is opened; the AC switch is connected with the central controller, the central controller judges whether a starting condition is met or not after receiving a starting signal of the AC switch, and sends a starting instruction to the inverter to start the inverter after the condition is met.
The inverter is provided with a boosting module and an inverting module, the boosting module converts low-voltage direct current from the battery module into high-voltage direct current through a push-pull circuit, the push-pull circuit converts the direct current into high-frequency alternating current pulses firstly, then the high-frequency alternating current pulses are boosted through a high-voltage transformer, and the alternating current pulses are rectified into high-voltage direct current after boosting; then the high-voltage direct current is input to an inversion module, the inversion module converts the high-voltage direct current into commercial power alternating current through an IGBT circuit, and the output end of an inverter is connected with an AC output interface; because the voltage after being processed by the boosting module is higher, the transformer can be made to be very small, the size of the inverter is reduced, and the cost is also reduced.
As shown in fig. 1, a charging end of the central controller is connected with a charging interface, and the charging interface can be connected with a solar cell panel, a mains supply AC, an automobile power supply, a wind driven generator and various fuel generators to provide a charging energy source for the mobile power supply; the battery end of the central controller is connected with the battery module, a corresponding charging circuit is arranged in the central controller, and the charging circuit converts the output of an external power supply into charging voltage and charging current and charges the battery module through the battery end.
As shown in fig. 1, in this embodiment, the central controller includes a DC output module, the DC output module obtains power from the battery module, the DC output module converts the output of the battery module into a stable 12V, 24V or USB direct current, the DC output module is connected to the DC output interface, and the mobile power source outputs the direct current through the DC output interface; the DC output module detects the output DC current in real time, controls the output to be switched on and off according to the output current, and cuts off the output when the output current is overlarge so as to realize the overload or short-circuit protection of the DC output interface.
As shown in fig. 1, in this embodiment, the BMS modules are charge and discharge at the same time, that is, the connection of the charge port and the discharge port on the BMS module is the same, and after the battery module and the BMS module are combined, only one pair of positive and negative ports is provided, which can be used for charging or discharging, wherein the negative port of the battery module is connected with the BMS module; the BMS module is provided with a voltage sensor and a current sensor and used for detecting the discharging or charging voltage and current of the battery module, the BMS module calculates the discharging or charging power of the battery module according to the detected voltage and current, the BMS module calculates the residual capacity SOC of the battery module by using an integration algorithm according to the detected current, and sends the detected voltage and current, and the calculated power and residual capacity SOC data to the central controller through a communication interface.
The mobile power supply cools and dissipates heat for the inverter, the battery module and the BMS module through the fan, in the embodiment, a heat dissipation control module is arranged in the central controller, the central controller is connected with a plurality of temperature sensors and the fan, the temperature sensors send temperature signals of all temperature monitoring points in the mobile power supply to the central controller, the central controller monitors the temperature in real time, and the heat dissipation control module controls the working state of the fan according to the collected temperature; when the central controller collects that the temperature is higher, the heat dissipation control module automatically controls the fan to operate to dissipate heat of the mobile power supply, if the temperature is too high and exceeds a set threshold value, the central controller automatically turns off the input or output of the mobile power supply to perform over-temperature protection, and the use safety of the mobile power supply is ensured.
As shown in fig. 1, in this embodiment, the central controller is bidirectionally connected to the display screen of the portable power source, the WiFi monitor, and the upper computer, the central controller sends monitoring data to the display screen, the WiFi monitor, and the upper computer, and the central controller receives control data from the display screen, the WiFi monitor, and the upper computer; the central controller sends display data such as output power, charging power, residual capacity SOC and charging and discharging residual time to the display screen, receives control data from a man-machine interaction button of the display screen, sets parameters of the mobile power supply and controls display contents of the display screen; the central controller is bidirectionally connected with an upper computer through an MODBUS communication protocol, and can monitor and adjust control parameter data of the central controller in real time by using the computer; central controller and portable power source's WIFI watch-dog both way junction, central controller send the data parameter for the WIFI watch-dog, also can receive the control parameter who comes from the WIFI watch-dog, can realize intelligent monitoring and control to portable power source after cell-phone APP is connected with the WiFi watch-dog.
The utility model discloses establish ties BMS module between battery module negative pole and dc-to-AC converter and central controller, the built-in communication interface of BMS module, set up the main switch of control BMS module MOS pipe on portable power source, and connect the AC switch on central controller, a weighing sensor and a temperature sensor, fan and various control interface, portable power source can read battery data in real time through the communication interface of BMS module, the control accuracy and the heat dispersion of system have been improved greatly, the dc-to-AC converter of module that steps up in the area has reduced the power station volume, the on-off control who adopts MOS pipe switch greatly reduced the system cost, and increased the display screen on this basis, the wiFi watch-dog, functions such as host computer communication function and system protection, and is with low costs, the advantage that the control accuracy is high, especially adapted is applied to portable power source product, obvious technological advantage and production sales prospect have.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A control system of a mobile power supply, the system comprising an inverter, a central controller, a battery module, a BMS module, a main switch, an AC output interface, a DC output interface, and a charging interface, wherein:
the central controller is internally provided with a charging end, a battery end and a DC output interface, the charging end of the central controller is connected with the charging interface, the charging interface is connected with an external power supply, the battery end of the central controller is connected with the battery module, the central controller converts the output of the external power supply into charging voltage and charging current and charges the battery module through the battery end, and the central controller converts the output of the battery module into stable output direct current and outputs the stable output direct current through the DC output interface;
the input end of the inverter is connected with the battery module, a boosting module and an inverting module are arranged in the inverter, the boosting module converts low-voltage direct current from the battery module into high-voltage direct current, and the inverting module converts the high-voltage direct current into commercial power alternating current and outputs the commercial power alternating current through an AC output interface connected with the output end of the inverter;
the negative pole of battery module links to each other with the BMS module, be equipped with MOS pipe switch and communication interface in the BMS module, the negative pole of battery module passes through the MOS pipe switch and links to each other with the input of dc-to-ac converter, the battery end of central controller passes through the MOS pipe switch and links to each other with the negative pole of battery module, the MOS pipe switch is according to the switching signal control battery module's of main switch-on and shutoff, and when main switch opened, battery module and inverter input switch-on to battery module supplies power to the battery end of central controller, the communication interface links to each other with the central controller, and the central controller reads battery residual capacity SOC, voltage and current data from the BMS module through communication interface.
2. The control system of the mobile power supply of claim 1, wherein the main switch is connected to the BMS module through the central controller, the BMS module comprises a driving circuit, a switching signal of the main switch is sent to the driving circuit through the central controller, and the driving circuit controls the corresponding MOS transistor to realize the switching operation of the MOS transistor switch.
3. The control system of the mobile power supply of claim 2, wherein a current sensor is provided in the BMS module to detect a current discharged or charged from the battery module, and the BMS module calculates the remaining capacity SOC of the battery module using an integration algorithm according to the detected current and transmits the calculated remaining capacity SOC data to the central controller.
4. The control system of the mobile power supply of claim 3, wherein the BMS module is provided therein with a voltage sensor for detecting a voltage at which the battery module is discharged or charged, calculates a discharge or charge power of the battery module according to the detected voltage and current, and transmits the detected voltage and current and the calculated power data to the central controller through the communication interface.
5. The control system of the mobile power supply according to claim 4, wherein the central controller is connected with a fan for cooling the mobile power supply and a temperature sensor for collecting the temperature of the mobile power supply, and the central controller controls the working state of the fan according to the collected temperature.
6. The control system of claim 5, wherein the central controller is connected to the display screen of the mobile power supply and the WiFi monitor, and the central controller transmits monitoring data including at least the remaining power SOC, the voltage, the current and the power to the display screen and the WiFi monitor, and receives the control data from the display screen and the WiFi monitor.
7. The control system of the mobile power supply of claim 1, wherein the external power supply comprises one or more of a solar panel, a mains AC, an automotive power supply, a wind power generator, and a fuel generator.
8. The control system of claim 1, wherein the regulated output dc power comprises a regulated 12V, 24V or USB dc power.
9. The control system of claim 1, further comprising an AC switch coupled to the inverter via the central controller, wherein the AC switch is coupled to the main switch, and wherein the AC switch is activated after the main switch is turned on, and wherein the AC switch sends a control signal to the inverter to turn on the inverter.
10. The control system of the mobile power supply of claim 1, wherein the BMS modules are charged and discharged at the same port, that is, the charging port and the discharging port of the BMS modules are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123328076.1U CN216851353U (en) | 2021-12-28 | 2021-12-28 | Control system of mobile power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123328076.1U CN216851353U (en) | 2021-12-28 | 2021-12-28 | Control system of mobile power supply |
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| Publication Number | Publication Date |
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| CN216851353U true CN216851353U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123328076.1U Active CN216851353U (en) | 2021-12-28 | 2021-12-28 | Control system of mobile power supply |
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| CN (1) | CN216851353U (en) |
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2021
- 2021-12-28 CN CN202123328076.1U patent/CN216851353U/en active Active
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