Super charging system and charging method thereof

Abstract

The application discloses a super charging system and a charging method thereof, and the system comprises an external power supply, a first switching circuit, a control transformer, a first rectification filter circuit, a super capacitor, a detection module, a charging controller, a third switching circuit, a battery, a second rectification filter circuit and a second switching circuit; the method comprises the following steps: 1, super charging; and 2, standby charging. The super capacitor can be charged with constant current and constant voltage, and the charging effect of the super capacitor is effectively improved; the charging efficiency of the super capacitor is effectively improved by the cooperation of the multiple charging modes, and the super capacitor can be charged efficiently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging systems, in particular to a super charging system and a charging method thereof. BACKGROUND

[0002] The super capacitor is a new type of energy storage device. The super capacitor is between the battery and the capacitor, and its great capacity can be used as a battery. Compared with the battery using the electrochemical principle, the charging and discharging process of the super capacitor does not involve the change of the substance, so it has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and green environmental protection. At present, the super capacitor charging technology in the related art is usually complex, the operation effect is poor, the charging efficiency is low, and it is extremely unstable. In the prior art, a super capacitor charging protection device is disclosed in Chinese Patent No. CN102891520A, which was published on January 23, 2013. The super capacitor charging device includes a microprocessor, a direct current power supply, an IGBT, a current limiting resistor, a voltage sensor and a super capacitor. The microprocessor is connected with the IGBT, the IGBT is connected with the direct current power supply and the current limiting resistor, the direct current power supply and the super capacitor are connected, the super capacitor and the current limiting resistor are connected, and the voltage sensor is connected with the super capacitor and the microprocessor.

[0003] The above technical scheme can realize real-time feedback of the voltage information of the super capacitor to the microprocessor through the voltage sensor, and has the advantages of simple system structure, strong real-time performance, safe operation and strong device stability. However, it cannot realize stable charging of the super capacitor. At the same time, affected by the external power supply, the super capacitor will be powered off during the charging process, so that the super capacitor cannot realize efficient charging work. SUMMARY

[0004] To solve the above problems, especially for the deficiencies of the prior art, the present application provides a super charging system and a charging method thereof, which can solve the above problems.

[0005] To achieve the above purpose, the following technical means are adopted in the present application:

[0006] A super charging system, comprising an external power supply, a first switching circuit, a control transformer, a first rectifier filter circuit, a super capacitor, a detection module, a charging controller, a third switching circuit, a battery, a second rectifier filter circuit and a second switching circuit.

[0007] The external power supply is connected with the control transformer through the first switching circuit, and the control transformer is connected with the super capacitor through the first rectifier filter circuit. The external power supply is connected with the second rectifier filter circuit through the second switching circuit, the second rectifier filter circuit is connected with the battery, and the battery is connected with the super capacitor through the third switching circuit.

[0008] The external power supply is connected with a first voltage sensor, the super capacitor is connected with a voltage sensor and a current sensor, the battery is connected with a second voltage sensor, the first voltage sensor, the first switch circuit, the control transformer, the third switch circuit, the second switch circuit and the second voltage sensor are connected with the charging controller respectively, and the voltage sensor and the current sensor are connected with the charging controller through the detection module.

[0009] The external power supply supplies power to the super capacitor.

[0010] The first voltage sensor is used for detecting the voltage of the external power supply.

[0011] The first switch circuit is used for connecting the super capacitor with the external power supply.

[0012] The control transformer is used for voltage transformation.

[0013] The first rectifier filter circuit and the second rectifier filter circuit are used for AC-DC conversion.

[0014] The super capacitor is used for storing electric energy.

[0015] The voltage sensor is used for detecting the terminal voltage of the super capacitor CL.

[0016] The current sensor is used for detecting the terminal current of the super capacitor CL.

[0017] The detection module is used for detecting the voltage data and the current data of the super capacitor and sending the voltage data and the current data to the charging controller.

[0018] The charging controller is used for outputting a control electric signal according to the received data.

[0019] The third switch circuit is used for connecting the super capacitor with the battery.

[0020] The battery is used for storing and releasing electric energy.

[0021] The second switch circuit is used for connecting the battery with the external power supply.

[0022] The second voltage sensor is used for detecting the voltage of the battery.

[0023] The first switch circuit, the second switch circuit and the third switch circuit have the same structure.

[0024] The first switch circuit is an IGBT switch circuit.

[0025] A further technical solution of the present invention is that a current limiting resistor is connected between the first rectifier and filter circuit and the supercapacitor.

[0026] A further technical solution of the present invention is that the voltage sensor is a Hall voltage sensor.

[0027] A further technical solution of the present invention is that the current sensor is a joint measurement current transmitter.

[0028] A further technical solution of the present invention is that the detection module is a 12-channel analog quantity acquisition module.

[0029] A further technical solution of the present invention is that the charging controller includes a DSP chip and an IR2235 control chip connected to the DSP chip.

[0030] A charging method for a super charging system, the specific charging method is as follows:

[0031] 1. Supercharging

[0032] The first voltage sensor detects whether the voltage of the external power supply meets the set value;

[0033] If the voltage exceeds the set value, the charging controller controls the first switch circuit to close, and the AC power input from the external power supply is regulated by the control transformer. The regulated voltage is then converted into DC power by the first rectifier and filter circuit to charge the supercapacitor. During the charging process, the voltage and current in the charging circuit are continuously monitored by the voltage sensor and the current sensor, and the monitoring parameters are fed back to the charging controller through the detection module. The charging controller compares the monitored parameters with the set parameters and outputs a PWM wave with different duty cycles according to the ratio of the phase difference, thereby regulating the control transformer, controlling the voltage and current in the charging circuit, and realizing constant current and constant voltage charging of the supercapacitor.

[0034] When the voltage is lower than the set value, the external power supply charges the supercapacitor while the battery is turned on to charge the supercapacitor. The charging controller controls the third switch circuit to close, and the DC power of the battery charges the supercapacitor.

[0035] When the set value is 0, the charging controller controls the first switch circuit to be disconnected and the third switch circuit to be closed, and the DC power of the battery charges the supercapacitor;

[0036] 2. Backup charging

[0037] The second voltage sensor detects whether the battery voltage meets the set value;

[0038] If the set value is exceeded, the charging controller controls the second switch circuit to disconnect, and the battery does not need to be replenished with energy;

[0039] When the voltage of the battery is lower than the set value, the charging controller controls the second switch circuit to be closed, the AC power of the external power supply is input, the AC power is converted into DC power by the second rectification filter circuit to charge the battery, and when the second voltage sensor detects that the voltage of the battery exceeds the set value, the charging controller controls the second switch circuit to be opened, and the charging of the battery is completed.

[0040] Advantages of the present application:

[0041] The detection module detects the voltage value and the current value of the super capacitor through the voltage sensor and the current sensor, and transmits the voltage value and the current value to the charging controller, the charging controller compares the voltage value and the current value of the super capacitor with the set value, and outputs the PWM wave with different duty cycles according to the proportion of the difference, so as to control the transformer and control the voltage and the current in the charging circuit, thereby realizing the constant-current and constant-voltage charging of the super capacitor and effectively improving the charging effect of the super capacitor.

[0042] The present application has three charging modes of the external power supply, the external power supply and the battery, and the battery, can select the charging mode most beneficial to the super capacitor through the charging controller according to the data detected by the first voltage sensor, and effectively improve the charging efficiency of the super capacitor by the cooperation of the multiple charging modes, so that the super capacitor can realize efficient charging work. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced.

[0044] Figure 1 is a system schematic diagram of a super charging system of the present application;

[0045] Reference signs:

[0046] External power supply 1, first voltage sensor 2, first switch circuit 3, control transformer 4, first rectification filter circuit 5, current limiting resistor 6, super capacitor 7, voltage sensor 8, current sensor 9, detection module 10, charging controller 11, third switch circuit 12, battery 13, second rectification filter circuit 14, second switch circuit 15, second voltage sensor 16. DETAILED DESCRIPTION

[0047] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0048] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] Embodiment 1

[0051] As Figure 1 shown, the present application provides a super charging system, comprising an external power supply 1, a first switching circuit 3, a control transformer 4, a first rectifier filter circuit 5, a super capacitor 7, a detection module 10, a charging controller 11, a third switching circuit 12, a battery 13, a second rectifier filter circuit 14, a second switching circuit 15;

[0052] The external power supply 1 is connected with the control transformer 4 through the first switching circuit 3, and the control transformer 4 is connected with the super capacitor 7 through the first rectifier filter circuit 5; The external power supply 1 is connected with the second rectifier filter circuit 14 through the second switching circuit 15, the second rectifier filter circuit 14 is connected with the battery 13, and the battery 13 is connected with the super capacitor 7 through the third switching circuit 12;

[0053] The external power supply 1 is connected with a first voltage sensor 2, the super capacitor 7 is connected with a voltage sensor 8 and a current sensor 9, the battery 13 is connected with a second voltage sensor 16, the first voltage sensor 2, the first switching circuit 3, the control transformer 4, the third switching circuit 12, the second switching circuit 15 and the second voltage sensor 16 are connected with the charging controller 11 respectively, and the voltage sensor 8 and the current sensor 9 are connected with the charging controller 11 through the detection module 10;

[0054] The external power supply 1 supplies power to the super capacitor 7;

[0055] The first voltage sensor 2 is used to detect the voltage of the external power supply 1;

[0056] The first switch circuit 3 is used for connecting the super capacitor 7 with the external power supply 1;

[0057] The control transformer 4 is used for voltage transformation;

[0058] The first rectifier filter circuit 5 and the second rectifier filter circuit 14 are used for AC-DC conversion;

[0059] The super capacitor 7 is used for storing electric energy;

[0060] The voltage sensor 8 is used for detecting the terminal voltage of the super capacitor CL;

[0061] The current sensor 9 is used for detecting the terminal current of the super capacitor CL;

[0062] The detection module 10 is used for detecting the voltage data and the current data of the super capacitor and sending them to the charging controller;

[0063] The charging controller 11 is used for outputting a control signal according to the received data;

[0064] The third switch circuit 12 is used for connecting the super capacitor 7 with the battery 13;

[0065] The battery 13 is used for storing and releasing electric energy;

[0066] The second switch circuit 15 is used for connecting the battery 13 with the external power supply 1;

[0067] The second voltage sensor 16 is used for detecting the voltage of the battery 13.

[0068] Charging method

[0069] The first voltage sensor 2 detects whether the voltage of the external power supply 1 meets the set value;

[0070] When the voltage exceeds the set value, the charging controller 11 controls the first switch circuit 3 to be closed, the AC power of the external power supply 1 is input, the voltage is regulated by the control transformer 4, the regulated voltage is converted into DC power by the first rectifier filter circuit 5, and the super capacitor 7 is charged; during the charging process, the voltage and the current in the charging circuit are monitored by the voltage sensor 8 and the current sensor 9, and the monitoring parameters are fed back to the charging controller 11 through the detection module 10; the charging controller 11 compares the monitoring parameters with the set parameters, outputs PWM waves with different duty cycles according to the proportion of their difference, thereby regulating the control transformer 4 and controlling the voltage and the current in the charging circuit, and realizing constant-current and constant-voltage charging of the super capacitor 7;

[0071] When the voltage is lower than the set value, the external power supply 1 charges the supercapacitor 7 while the battery 13 is turned on to charge the supercapacitor 7. The charging controller 11 controls the third switch circuit 12 to be closed, and the DC power of the battery 13 charges the supercapacitor 7.

[0072] When the set value is 0, the charging controller 11 controls the first switch circuit 3 to be disconnected and the third switch circuit 12 to be closed, and the DC power of the battery 13 charges the supercapacitor 7;

[0073] The second voltage sensor 16 detects whether the voltage of the battery 13 meets the set value;

[0074] If the set value is exceeded, the charging controller 11 controls the second switch circuit 15 to be disconnected, and the battery 13 does not need to be replenished with power;

[0075] When the voltage of the battery 13 exceeds the set value, the charging controller 11 controls the second switch circuit 15 to close, and the AC power of the external power supply 1 is input. The AC power is converted into DC power by the second rectifier and filter circuit 14 to charge the battery 13. When the second voltage sensor 16 detects that the voltage of the battery 13 exceeds the set value, the charging controller 11 controls the second switch circuit 15 to open, and the charging of the battery 13 ends.

[0076] Example 2

[0077] like Figure 1 As shown, the present invention provides a super charging system, including an external power supply 1, a first switching circuit 3, a control transformer 4, a first rectifier and filter circuit 5, a supercapacitor 7, a detection module 10, a charging controller 11, a third switching circuit 12, a battery 13, a second rectifier and filter circuit 14, and a second switching circuit 15;

[0078] The external power supply 1 is connected to the control transformer 4 through the first switching circuit 3, and the control transformer 4 is connected to the supercapacitor 7 through the first rectifier and filter circuit 5; the external power supply 1 is connected to the second rectifier and filter circuit 14 through the second switching circuit 15, the second rectifier and filter circuit 14 is connected to the battery 13, and the battery 13 is connected to the supercapacitor 7 through the third switching circuit 12;

[0079] The external power supply 1 is connected to a first voltage sensor 2, the supercapacitor 7 is connected to a voltage sensor 8 and a current sensor 9, the battery 13 is connected to a second voltage sensor 16, the first voltage sensor 2, the first switching circuit 3, the control transformer 4, the third switching circuit 12, the second switching circuit 15, and the second voltage sensor 16 are respectively connected to a charging controller 11, and the voltage sensor 8 and the current sensor 9 are both connected to the charging controller 11 through a detection module 10;

[0080] The external power supply 1 supplies power to the supercapacitor 7;

[0081] The first voltage sensor 2 is used to detect the voltage of the external power supply 1;

[0082] The first switch circuit 3 is used to connect the supercapacitor 7 to the external power supply 1;

[0083] The control transformer 4 is used for voltage transformation;

[0084] The first rectifier and filter circuit 5 and the second rectifier and filter circuit 14 are both used for converting AC to DC;

[0085] The supercapacitor 7 is used to store electrical energy;

[0086] The voltage sensor 8 is used to detect the terminal voltage of the supercapacitor CL;

[0087] The current sensor 9 is used to detect the terminal current of the supercapacitor CL;

[0088] The detection module 10 is used to detect the voltage data and current data of the supercapacitor and send them to the charging controller;

[0089] The charging controller 11 is used to output a control electrical signal according to the received data;

[0090] The third switch circuit 12 is used to connect the supercapacitor 7 to the battery 13;

[0091] The battery 13 is used to store and release electrical energy;

[0092] The second switch circuit 15 is used to connect the battery 13 to the external power supply 1;

[0093] The second voltage sensor 16 is used to detect the voltage of the battery 13 .

[0094] The first switch circuit 3, the second switch circuit 15, and the third switch circuit 12 have the same structure. This arrangement facilitates the interchange of the first switch circuit 3, the second switch circuit 15, and the third switch circuit 12, effectively improving the operating efficiency of the first switch circuit 3, the second switch circuit 15, and the third switch circuit 12.

[0095] The first switching circuit 3 is an IGBT switching circuit. The IGBT switching circuit has low driving power and low saturation voltage drop, and is very suitable for use in converter systems with a DC voltage of 600V or above, such as AC motors, frequency converters, switching power supplies, lighting circuits, traction drives, and other fields.

[0096] A current limiting resistor 6 is connected between the first rectifying and filtering circuit 5 and the super capacitor 7. The current limiting resistor 6 can reduce the impact of large current on the super capacitor 7.

[0097] Example 3

[0098] like Figure 1As shown, the application provides a super charging system, comprising an external power supply 1, a first switch circuit 3, a control transformer 4, a first rectifier filter circuit 5, a super capacitor 7, a detection module 10, a charging controller 11, a third switch circuit 12, a battery 13, a second rectifier filter circuit 14, and a second switch circuit 15.

[0099] The external power supply 1 is connected with the control transformer 4 through the first switch circuit 3, and the control transformer 4 is connected with the super capacitor 7 through the first rectifier filter circuit 5; the external power supply 1 is connected with the second rectifier filter circuit 14 through the second switch circuit 15, the second rectifier filter circuit 14 is connected with the battery 13, and the battery 13 is connected with the super capacitor 7 through the third switch circuit 12.

[0100] The external power supply 1 is connected with a first voltage sensor 2, the super capacitor 7 is connected with a voltage sensor 8 and a current sensor 9, the battery 13 is connected with a second voltage sensor 16, the first voltage sensor 2, the first switch circuit 3, the control transformer 4, the third switch circuit 12, the second switch circuit 15, and the second voltage sensor 16 are connected with the charging controller 11, and the voltage sensor 8 and the current sensor 9 are connected with the charging controller 11 through the detection module 10.

[0101] The external power supply 1 supplies power to the super capacitor 7.

[0102] The first voltage sensor 2 is used for detecting the voltage of the external power supply 1.

[0103] The first switch circuit 3 is used for connecting the super capacitor 7 with the external power supply 1.

[0104] The control transformer 4 is used for voltage transformation.

[0105] The first rectifier filter circuit 5 and the second rectifier filter circuit 14 are used for AC-DC conversion.

[0106] The super capacitor 7 is used for storing electric energy.

[0107] The voltage sensor 8 is used for detecting the terminal voltage of the super capacitor CL.

[0108] The current sensor 9 is used for detecting the terminal current of the super capacitor CL.

[0109] The detection module 10 is used for detecting the voltage data and the current data of the super capacitor and sending them to the charging controller.

[0110] The charging controller 11 is used for outputting a control electric signal according to the received data.

[0111] The third switch circuit 12 is used for connecting the super capacitor 7 with the battery 13.

[0112] The battery 13 is used for storing and releasing electric energy.

[0113] The second switch circuit 15 is used for connecting the battery 13 with the external power supply 1.

[0114] The second voltage sensor 16 is used for detecting the voltage of the battery 13.

[0115] The voltage sensor 8 is a Hall voltage sensor.

[0116] The current sensor 9 is a combined current transmitter.

[0117] The detection module 10 is a 12-way analog quantity acquisition module.

[0118] The charging controller 11 comprises a DSP chip and an IR2235 control chip connected with the DSP chip.

[0119] The above description is only an example of the present application, and is not a limitation of the embodiments. Other different forms of changes or variations can be made by those skilled in the art based on the above description, and all the embodiments do not need to be exhausted, and the obvious changes or variations still fall within the protection scope of the present application.

Claims

1. A super charging system, characterized in that: It includes an external power supply, a first switching circuit, a control transformer, a first rectifier and filter circuit, a supercapacitor, a detection module, a charging controller, a third switching circuit, a battery, a second rectifier and filter circuit, and a second switching circuit; The external power supply is connected to the control transformer through the first switching circuit, and the control transformer is connected to the supercapacitor through the first rectifier and filter circuit; the external power supply is connected to the second rectifier and filter circuit through the second switching circuit, and the second rectifier and filter circuit is connected to the battery, and the battery is connected to the supercapacitor through the third switching circuit; The external power supply is connected to a first voltage sensor, the supercapacitor is connected to a voltage sensor and a current sensor, and the battery is connected to a second voltage sensor. The first voltage sensor, the first switch circuit, the control transformer, the third switch circuit, the second switch circuit, and the second voltage sensor are respectively connected to the charging controller, and the voltage sensor and the current sensor are both connected to the charging controller through the detection module. The external power supply supplies power to the supercapacitor; The first voltage sensor is used to detect the voltage of the external power supply; The first switch circuit is used to connect the supercapacitor to an external power supply; The control transformer is used for voltage transformation; The first rectifier and filter circuit and the second rectifier and filter circuit are both used for converting AC to DC; The supercapacitor is used to store electrical energy; The voltage sensor is used to detect the terminal voltage of the supercapacitor CL; The current sensor is used to detect the terminal current of the supercapacitor CL; The detection module is used to detect the voltage data and current data of the supercapacitor and send them to the charging controller; The charging controller is used to output a control electrical signal according to the received data; The third switch circuit is used to connect the supercapacitor to the battery; The battery is used to store and release electrical energy; The second switch circuit is used to connect the battery to an external power source; The second voltage sensor is used to detect the voltage of the battery.

2. A super charging system according to claim 1, characterized in that: The first switch circuit, the second switch circuit, and the third switch circuit have the same structure.

3. A super charging system according to claim 2, characterized in that: The first switching circuit is an IGBT switching circuit.

4. The super charging system according to claim 1, wherein: A current limiting resistor is connected between the first rectifier and filter circuit and the supercapacitor.

5. The super charging system according to claim 1, wherein: The voltage sensor is a Hall voltage sensor.

6. The super charging system according to claim 1, wherein: The current sensor is a joint measurement current transmitter.

7. The super charging system according to claim 1, wherein: The detection module is a 12-channel analog quantity acquisition module.

8. The super charging system according to claim 1, wherein: The charging controller includes a DSP chip and an IR2235 control chip connected to the DSP chip.

9. A charging method for a super charging system according to any one of claims 1 to 8, characterized in that: The specific charging method is as follows:

1. Supercharging The first voltage sensor detects whether the voltage of the external power supply meets the set value; When the voltage exceeds the set value, the charging controller controls the first switch circuit to close, and the AC power input from the external power supply is regulated by the control transformer. The regulated voltage is then converted into DC power by the first rectifier and filter circuit to charge the supercapacitor. During the charging process, the voltage and current sensors continuously monitor the voltage and current in the charging circuit, and feed the monitoring parameters back to the charging controller through the detection module. The charging controller compares the monitoring parameters with the set parameters and outputs PWM waves with different duty cycles according to the ratio of the phase difference, thereby regulating the control transformer, controlling the voltage and current in the charging circuit, and realizing constant current and constant voltage charging of the supercapacitor. When the value is lower than the set value, the external power supply charges the supercapacitor while the battery is turned on to charge the supercapacitor. The charging controller controls the third switch circuit to close, and the DC power of the battery charges the supercapacitor. When the set value is 0, the charging controller controls the first switch circuit to be disconnected and the third switch circuit to be closed, and the DC power of the battery charges the supercapacitor; 2. Backup charging The second voltage sensor detects whether the battery voltage meets the set value; If the set value is exceeded, the charging controller controls the second switch circuit to disconnect, and the battery does not need to be replenished with energy; When the voltage of the battery exceeds the set value, the charging controller controls the second switch circuit to close, and the AC power of the external power supply is input. The AC power is converted into DC power through the second rectifier and filter circuit to charge the battery. When the second voltage sensor detects that the battery voltage exceeds the set value, the charging controller controls the second switch circuit to open, and the battery charging stops.

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