CN218514277U

CN218514277U - Drive control circuit and electronic device

Info

Publication number: CN218514277U
Application number: CN202222348217.4U
Authority: CN
Inventors: 赵密; 童文平
Original assignee: Ecoflow Technology Ltd
Current assignee: Ecoflow Technology Ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-02-21
Anticipated expiration: 2032-09-02

Abstract

The application belongs to the technical field of the circuit, provides a drive control circuit and electronic equipment, and drive control circuit includes: the drive circuit and the output switch circuit, this application utilizes drive circuit's first output switch control signal to output switch circuit's control end after the drive control signal of master control circuit input is converted through drive circuit, utilizes drive circuit's second output reference control signal to output switch circuit's second end to form output switch circuit and switch on required voltage difference. Therefore, the control of the output switch circuit does not need to be referred to by means of the grounding end, the first end and the second end of the output switch circuit cannot be directly short-circuited due to the fact that the grounding end is connected with the rack, and the problem that the grounding end of the device is directly connected with the rack to cause control function failure of the switch tube is solved.

Description

Drive control circuit and electronic device

Technical Field

The application belongs to the technical field of circuits, and particularly relates to a drive control circuit and an electronic device.

Background

When energy storage equipment or other power supply equipment outputs electric energy, the on-off of a switch of each branch circuit is often required to be controlled so as to realize that the electric energy is transmitted to a load of the corresponding branch circuit. In the correlation technique, can set up the switch tube on the negative pole of electric energy output and realize the electric energy output of corresponding branch road, nevertheless set up the switch tube on the electric energy output negative pole, when the earthing terminal and the frame lug connection of equipment, arouse the condition that switch tube control became invalid easily to take place.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, an embodiment of the present application provides a driving control circuit and an electronic device, which can solve the problem that the existing switching tube control is easy to fail.

A first aspect of an embodiment of the present application provides a drive control circuit, including:

the driving circuit is used for converting a driving control signal input by the main control circuit, outputting a switch control signal through a first output end of the driving circuit and outputting a reference control signal through a second output end of the driving circuit;

the first end of the output switch circuit is used for connecting a power supply, the control end of the output switch circuit is connected with the first output end of the driving circuit, the second end of the output switch circuit is connected with the second output end of the driving circuit, the second end of the output switch circuit is also used for connecting an electric load, and the output switch circuit is used for receiving the switch control signal and the reference control signal and controlling the connection state of the power supply and the electric load according to the switch control signal and the reference control signal.

In one embodiment, the driving circuit includes an optical coupling unit, a conversion unit, and an amplification unit:

the input end of the optical coupling unit is used for being connected with the main control circuit, and the first output end of the optical coupling unit is connected with the first input end of the conversion unit;

the second input end of the conversion unit is used for being connected with a first power supply, and the first output end of the conversion unit is connected with the first input end of the amplification unit;

the second input end of the amplifying unit is used for being connected with the first power supply, and the first output end of the amplifying unit is connected with the first output end of the driving circuit; a second output end of the optical coupling unit, a second output end of the conversion unit and a second output end of the amplification unit are connected, and are connected with a second output end of the driving circuit to provide the reference control signal;

the optical coupling unit is used for isolating the drive control signal and then outputting the drive control signal to the conversion unit, the conversion unit is used for carrying out level conversion on the drive control signal isolated by the optical coupling unit and then outputting the drive control signal to the amplification unit, and the drive control signal is amplified by the amplification unit and then output the switch control signal.

In one embodiment, the light coupling unit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first switch tube and a first optocoupler isolator; wherein the content of the first and second substances,

the first end of the first resistor is connected with the input end of the optical coupling unit; the second end of the first resistor is connected with the control end of the first switching tube; the second resistor is connected between the control end and the first end of the first switch tube; the first end of the first switch tube is grounded, and the second end of the first switch tube is connected with the second end of the first optical coupler isolator; the first end of the first optical coupler isolator is connected with the second end of the third resistor, and the first end of the third resistor is used for being connected with a second power supply; the third end of the first optical coupler isolator is connected with the second output end of the optical coupler unit; a fourth end of the first optical coupler isolator is connected with a second end of the fourth resistor, and a first end of the fourth resistor is used for being connected with a third power supply; and the fourth end of the first optical coupler isolator is connected with the first output end of the optical coupler unit.

In one embodiment, the conversion unit includes: the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor, the first capacitor, the second capacitor and the second switch tube; wherein, the first and the second end of the pipe are connected with each other,

a first end of the fifth resistor is connected with a first input end of the conversion unit, and a second end of the fifth resistor is connected with a control end of the second switching tube; the first capacitor is connected between the control end of the second switch tube and the first end of the second switch tube; the sixth resistor is connected with the first capacitor in parallel; the first end of the second switching tube is connected with the second output end of the conversion unit; the second end of the second switch tube is connected with the second end of the seventh resistor, and the first end of the seventh resistor is connected with the second input end of the conversion unit; the second end of the second switching tube is connected with the first output end of the conversion unit; the first end of the second capacitor is connected with the first end of the seventh resistor, and the second end of the second capacitor is connected with the first end of the second switch tube.

In one embodiment, the amplifying unit includes: the eighth resistor, the third switching tube and the fourth switching tube; wherein the content of the first and second substances,

a first end of the eighth resistor is connected with a first input end of the amplifying unit; a second end of the eighth resistor is connected with a control end of the third switching tube and a control end of the fourth switching tube in a sharing manner; the first end of the third switching tube is connected with the second input end of the amplifying unit; the second end of the third switching tube is connected with the second end of the fourth switching tube, the second end of the third switching tube is connected with the first output end of the amplifying unit, and the first end of the fourth switching tube is connected with the second output end of the amplifying unit; the third switching tube and the fourth switching tube are switching tubes with opposite conduction types.

In one embodiment, the output switching circuit includes:

a first end of the switch unit is connected with the power supply, and a second end of the switch unit is connected with a second output end of the driving circuit and is used for being connected with an electric load; the control end of the switch unit is connected with the first output end of the driving circuit; the switch unit is used for switching on or switching off the connection between the power supply and the electric load according to the switch control signal and the reference control signal;

and the slow starting unit is connected between the control end and the second end of the switch unit and is used for delaying the on-off time of the switch unit.

In one embodiment, the output switching circuit further comprises:

and the voltage stabilizing unit is connected with the second end of the switch unit and is used for performing voltage stabilizing processing on the power supply signal output by the switch unit when the switch unit is switched on.

In one embodiment, the switching unit includes: a ninth resistor, a tenth resistor, a fifth switching tube, a sixth switching tube and a third capacitor; wherein the content of the first and second substances,

a first end of the ninth resistor is connected with a first end of the switch unit, and a second end of the ninth resistor is connected with a control end of the fifth switch tube and a control end of the sixth switch tube in common; the first end of the fifth switching tube is connected with the first end of the sixth switching tube in a common mode and is connected with the first end of the switching unit, the second end of the fifth switching tube is connected with the second end of the sixth switching tube in a common mode and is connected with the second end of the switching unit, and the third capacitor and the tenth resistor are connected between the first end and the second end of the fifth switching tube after being connected in series.

In one embodiment, the soft start unit includes: a slow starting capacitor and an eleventh resistor; wherein, the first and the second end of the pipe are connected with each other,

the first end of the eleventh resistor and the first end of the slow start capacitor are connected to the control end of the sixth switching tube, and the second end of the eleventh resistor and the second end of the slow start capacitor are connected to the second end of the sixth switching tube.

A second aspect of the embodiments of the present application provides an electronic device, including a main control circuit and the driving control circuit as described in any one of the above embodiments, where the main control circuit is connected to the driving control circuit and configured to provide a driving control signal to control an operating state of the driving control circuit.

The present embodiment provides a drive control circuit including: drive circuit and output switch circuit, this application through drive circuit with the drive control signal of master control circuit input after the conversion, utilize drive circuit's first output switch control signal to output switch circuit's control end, utilize drive circuit's second output reference control signal to output switch circuit's second end to form output switch circuit and switch on required voltage difference. Therefore, the control of the output switch circuit does not need to be referred to by means of the grounding end, the first end and the second end of the output switch circuit cannot be directly short-circuited due to the fact that the grounding end is connected with the rack, and the problem that the grounding end of the device is directly connected with the rack to cause control function failure of the switch tube is solved.

Drawings

Fig. 1 is a schematic structural diagram of a driving control circuit according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating an embodiment of a driving control circuit according to the present disclosure;

fig. 3 is a schematic diagram of a driving control circuit according to another embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of an electronic device according to another embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means one or more unless specifically limited otherwise.

When energy storage equipment or other power supply equipment outputs electric energy, the on-off of a switch of each branch circuit is often required to be controlled so as to realize that the electric energy is transmitted to a load of the corresponding branch circuit. In the correlation technique, can set up the switch tube on the negative pole of electric energy output and realize the electric energy output of corresponding branch road, nevertheless set up the switch tube on the electric energy output negative pole, when the earthing terminal and the frame lug connection of equipment, be equivalent to on both ends of switch tube all are connected to the frame to lead to the switch tube by the short circuit, the electric current in the circuit directly passes through the frame and forms the return circuit, and need not come the control through the switch tube and switch on, thereby arouse that the condition of switch tube control inefficacy takes place. Therefore, the switching tube of the driving control circuit in the related art may have a problem of control failure.

In order to solve the above technical problem, referring to fig. 1, an embodiment of the present application provides a driving control circuit 400, including: a drive circuit 10 and an output switch circuit 20.

Specifically, the driving circuit 10 is configured to be connected to the main control circuit 100, and the driving circuit 10 is configured to output a switch control signal through a first output end Out1 of the driving circuit 10 after converting a driving control signal input by the main control circuit 100, and output a reference control signal through a second output end Out2 of the driving circuit 10. The first terminal J1 of the output switch circuit 20 is used for connecting the power supply 200, and the control terminal J3 of the output switch circuit 20 is connected to the first output terminal Out1 of the driving circuit 10. The second terminal J2 of the output switch circuit 20 is connected to the second output terminal Out2 of the driving circuit 10, and the second terminal Out2 of the output switch circuit 20 is further used for connecting the electrical load 300. The output switch circuit 20 is configured to receive the switch control signal and the reference control signal, and control a connection state between the power supply 200 and the electrical load 300 according to the switch control signal and the reference control signal.

In this embodiment, the main control circuit 100 may be a main control chip, and the power supply 200 may be an ac power supply or a dc power supply. It is understood that when the power supply 200 is an ac power supply, a corresponding voltage conversion circuit is required to convert the ac power provided by the ac power supply into a corresponding dc power, and then the dc power is transmitted to the load through the output switch circuit 20. The electric loads 300 may be general electric appliances such as an air conditioner, a refrigerator, a washing machine, an electric lamp, a television, and the like.

In this embodiment, the scheme of the present application may be applied to an energy storage device. The power supply 200 may be a battery pack in the energy storage device, the main control circuit 100 may be a main control chip of the energy storage device, and the electric load 300 may be an electrical appliance connected to the energy storage device for use.

In this embodiment, when it is necessary to control the corresponding electrical load 300 to be connected to the power supply 200, the main control circuit may send a corresponding driving control signal, and the driving circuit 10 converts the driving control signal to generate the switching control signal and the reference control signal after receiving the corresponding driving control signal. And the switch control signal is output through a first output end Out1 of the driving circuit 10, the reference control signal is output through a second output end Out2 of the driving circuit 10, the output switch circuit 20 is respectively connected with the first output end Out1 and the second output end of the driving circuit 10, and the output switch circuit 20 can turn on or turn off the connection of the power supply 200 and the electric load 300 according to the voltage difference between the switch control signal and the reference control signal.

In the related art, the output switch circuit 20 is usually disposed at the negative pole of the power output to realize the power output control of the corresponding branch, that is, the output switch circuit 20 is connected in series to the power supply loop between the negative pole of the power supply and the electrical load 300. Usually, the negative pole of the power source is connected to the chassis ground, and the side connected with the electric load 300 is connected to the system ground, or the reverse arrangement. Once the ground terminal of the device is directly connected to the rack, it is equivalent to short-circuiting the chassis ground to the system ground, and short-circuiting the output switch circuit 20, so that the output switch circuit 20 cannot be used to perform on-off control on the power supply loop, and the control function of the switch tube fails. The output switch circuit 20 is arranged between the power supply 200 and the electrical load 300, after the drive control signal input by the main control circuit 100 is converted by the drive circuit 10, the first output end Out1 of the drive circuit 10 is used for outputting the switch control signal to the control end J3 of the output switch circuit 20, the second output end Out2 of the drive circuit 10 is used for outputting the reference control signal to the second end of the output switch circuit 20, so that a voltage difference required by the conduction of the output switch circuit is formed, the on-off of the output switch circuit 20 is controlled by using the voltage difference between the switch control signal and the reference control signal, and the grounding end is not used as a reference, so that the connection state of the power supply 200 and the electrical load 300 is controlled. By using the scheme, the first end J1 and the second end J2 of the output switch circuit 20 cannot be directly short-circuited due to the connection between the grounding end and the chassis ground, and the problem of control function failure of a switch tube in the output switch circuit 20 caused by the direct connection between the grounding end of the device and the rack is avoided.

In one embodiment, as shown with reference to fig. 2, the driving circuit 10 includes: a light coupling unit 11, a conversion unit 12 and an amplification unit 13.

Specifically, an input end of the optical coupling unit 11 is configured to be connected to the main control circuit 100, and a first output end of the optical coupling unit 11 is connected to a first input end of the conversion unit 12. A second input terminal of the conversion unit 12 is configured to be connected to a first power supply, and the first power supply is configured to output a power supply signal V1. A first output of the conversion unit 12 is connected to a first input of the amplification unit 13. A second input terminal of the amplifying unit 13 is configured to be connected to a first power supply, and a first output terminal of the amplifying unit 13 is connected to a first output terminal Out1 of the driving circuit 10. A second output terminal of the optical coupling unit 11, a second output terminal of the converting unit 12, and a second output terminal of the amplifying unit 13 are connected, and are connected to a second output terminal Out2 of the driving circuit 10 to provide a reference control signal. The optical coupling unit 11 is configured to isolate the driving control signal and output the isolated driving control signal to the conversion unit 12, and the conversion unit 12 is configured to output the driving control signal isolated by the optical coupling unit 11 to the amplification unit 13 after level conversion, and output a switch control signal after amplification by the amplification unit 13.

In this embodiment, after the optical coupling unit 11 receives the driving control signal, the driving control signal is isolated, and then the isolated driving control signal is output from the first output end of the optical coupling unit 11. The first input end of the converting unit 12 receives the isolated driving control signal, performs level conversion, and outputs the level converted driving control signal from the first output end of the converting unit 12 to the first input end of the amplifying unit 13. The first input terminal of the amplifying unit 13 receives the level-converted driving control signal and then performs an amplifying process, and outputs a switching control signal to the control terminal J3 of the output switching circuit 20 through the first output terminal of the amplifying unit 13, so that the driving circuit 10 performs a corresponding operation.

In this embodiment, the second output terminal of the optical coupling unit 11, the second output terminal of the converting unit 12, and the second output terminal of the amplifying unit 13 are connected, and referring to fig. 2, a common node is Out2 and is used for providing the reference control signal. The first output terminal Out1 of the amplifying unit 13 outputs a switching control signal to the control terminal J3 of the output switching circuit 20. Therefore, the on-off of the output switch circuit 20 is controlled by using the voltage difference between the switch control signal and the reference control signal without using a grounding end as a reference, so as to control the connection state of the power supply 200 and the electric load 300, and avoid the problem of control function failure of a switch tube when the grounding end of the equipment is directly connected with the rack.

In one embodiment, as shown with reference to fig. 2, the light coupling unit 11 includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first switch tube Q1 and a first optocoupler isolator U1.

Specifically, a first end of the first resistor R1 is connected to an input end of the optical coupling unit 11, and a second end of the first resistor R1 is connected to a control end of the first switching tube Q1. The second resistor R2 is connected between the control end and the first end of the first switch tube Q1, the first end of the first switch tube Q1 is grounded, and the second end of the first switch tube Q1 is connected with the second end of the first optical coupler isolator U1. The first end of the first optical coupler isolator U1 is connected with the second end of the third resistor R3, the first end of the third resistor R3 is used for being connected with a second power supply, and the third end of the first optical coupler isolator U1 is connected with the second output end of the optical coupler unit 11. The fourth end of the fourth resistor R4 is connected with the fourth end of the first optocoupler isolator U1, the first end of the fourth resistor R4 is used for being connected with a third power supply, and the fourth end of the first optocoupler isolator U1 is connected with the first output end of the optocoupler unit 11.

In this embodiment, when the driving control signal is a high level signal, the first switching tube Q1 is turned on, the second power supply outputs the power signal V2, the first opto-isolator U1 is turned on, and the power signal V3 output by the third power supply is limited by the fourth resistor R4 and then output as the reference control signal. At this time, the first output end of the optical coupling unit 11 outputs the isolated driving control signal, and the isolated driving control signal is a low level signal. On the contrary, when the driving control signal is at a low level, the first switching tube Q1 is cut off, the first optical coupler isolator U1 is cut off at this time, the first output end of the optical coupler unit 11 outputs the isolated driving control signal at this time, and the isolated driving control signal is a high level signal, and when the third power supply is a 12V power supply, the high level signal is a 12V power supply signal. The second power supply may be a 5V power supply.

In one embodiment, as shown with reference to fig. 2, the conversion unit 12 includes: the circuit comprises a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a second capacitor C2 and a second switch tube Q2.

Specifically, a first end of the fifth resistor R5 is connected to the first input end of the converting unit 12, and a second end of the fifth resistor R5 is connected to the control end of the second switching tube Q2. The first capacitor C1 is connected between the control end of the second switch Q2 and the first end of the second switch Q2. The sixth resistor R6 is connected in parallel with the first capacitor C1. A first end of the second switching tube Q2 is connected to a second output end of the converting unit 12. A second end of the second switching tube Q2 is connected to a second end of the seventh resistor R7, and a first end of the seventh resistor R7 is connected to the second output end of the converting unit 12. A second end of the second switch Q2 is connected to a first output end of the converting unit 12. A first end of the second capacitor C2 is connected to a first end of the seventh resistor R7, and a second end of the second capacitor C2 is connected to a first end of the second switching tube Q2.

In this embodiment, the first power supply may provide 12V voltage, when the driving control signal is a high level signal, the first output end of the optical coupling unit 11 outputs the isolated driving control signal as a low level signal, and the control end of the second switch tube Q2 receives the isolated driving control signal and then is turned off. Conversely, when the driving control signal is a low level signal, the first output end of the optical coupling unit 11 outputs the isolated driving control signal as a high level signal, for example, a 12V power signal. The control end of the second switch tube Q2 receives the high level signal to be conducted, and at this time, the second end of the second switch tube Q2 converts the drive control signal isolated by the optical coupling unit and outputs the drive control signal to the amplifying unit 13. A first end of the second switching tube Q2 is connected to a second end of the output switching circuit 20, and outputs a reference control signal. The sixth resistor R6 is a voltage stabilizing resistor, the sixth resistor R6 is used for stabilizing the voltage of the control end of the second switch tube Q2, the fifth resistor R5 is a current limiting resistor, and the fifth resistor R5 is used for performing current limiting processing on an optocoupler signal.

In one embodiment, as shown with reference to fig. 2, the amplifying unit 13 includes: an eighth resistor R8, a third switching tube Q3, and a fourth switching tube Q4.

Specifically, a first end of the eighth resistor R8 is connected to a first input end of the amplifying unit 13, and a second end of the eighth resistor R8 is commonly connected to a control end of the third switching tube Q3 and a control end of the fourth switching tube Q4. A first end of the third switching tube Q3 is connected to a second input end of the amplifying unit 13. A second end of the third switching tube Q3 is connected to a second end of the fourth switching tube Q4, a second end of the third switching tube Q3 is connected to a first output end of the amplifying unit 13, and a first end of the fourth switching tube Q4 is connected to a second output end of the amplifying unit 13. The third switching tube Q3 and the fourth switching tube Q4 are switching tubes with opposite conduction types. In one embodiment, the third transistor Q3 is an NPN transistor, and the fourth transistor Q4 is a PNP transistor.

In this embodiment, when the driving control signal is at a high level, the first output end of the optical coupling unit 11 outputs the isolated driving control signal as a low level signal, and the control end of the second switch Q2 of the conversion unit 12 receives the isolated driving control signal and then is turned off. At this time, the control terminal of the third switching tube Q3 and the control terminal of the fourth switching tube Q4 receive a high level signal generated by the first power supply. Therefore, the third transistor Q3 is turned on, the fourth transistor Q4 is turned off, and the second end of the third transistor Q3 outputs a high-level switch control signal. When the driving control signal is at a low level, the first output end of the optocoupler unit 11 outputs the isolated driving control signal as a high level signal, the control end of the second switch tube Q2 of the conversion unit 12 receives the high level signal and is switched on, and the control end of the third switch tube Q3 and the control end of the fourth switch tube Q4 receive the low level signal, so that the fourth switch tube Q4 is switched on, and the third switch tube Q3 is switched off. At this time, the first end of the fourth switching tube Q4 outputs a low-level switching control signal, and the second end of the fourth switching tube Q4 outputs a reference control signal.

In one embodiment, referring to fig. 3, the output switching circuit 20 includes: a switch unit 21 and a soft start unit 22.

Specifically, a first end of the switch unit 21 is connected to the power supply 200, a second end of the switch unit 21 is connected to the second output end Out2 of the driving circuit 10, and the second end of the switch unit 21 is configured to be connected to the electrical load 300. The control terminal of the switching unit 21 is connected to the first output terminal Out1 of the drive circuit 10. The switching unit 21 is configured to turn on or off the connection between the power supply 200 and the electrical load 300 according to the switching control signal and the reference control signal. The slow start unit 22 is connected between the control terminal and the second terminal of the switch unit 21, and the slow start unit 22 is used for delaying the on or off time of the switch unit 21.

In the present embodiment, the first terminal of the switch unit 21 is used for receiving the switch control signal, and the second terminal of the switch unit 21 is used for receiving the reference control signal. A voltage difference exists between the reference control signal received by the second terminal of the switch unit 21 and the switch control signal received by the first terminal of the switch unit 21, and the on/off of the switch unit 21 is controlled by using the voltage difference between the switch control signal and the reference control signal, so as to control the connection state of the power supply 200 and the electrical load 300. Therefore, the control of the switch unit 21 does not need to use the ground terminal as a reference, so that the situation that the first terminal and the second terminal of the switch unit are directly short-circuited is avoided, and the problem that the control function of the switch unit 21 is invalid when the ground terminal of the device is directly connected with the rack is avoided.

In the present embodiment, the soft start unit 22 performs charging and discharging according to the switching control signal to delay the on or off time of the switching unit 21. For example, when the slow start unit 22 is charged to a preset voltage, the switching unit 21 is controlled to be turned on, and when the slow start unit 22 is discharged to the preset voltage, the switching unit 21 is controlled to be turned off. The slow starting unit 22 can reduce the on-off speed of the switch unit 21, protect the switch unit 21 better, prolong the service life of the switch unit 21, and further prolong the service life of the drive control circuit 400.

In one embodiment, referring to fig. 3, the output switch circuit 20 further includes: and a voltage stabilizing unit 23.

Specifically, the voltage stabilizing unit 23 is connected to the second end of the switch unit 21, and the voltage stabilizing unit 23 is configured to perform voltage stabilizing processing on the power supply signal output by the switch unit 21 when the switch unit 21 is turned on.

In the present embodiment, when the switch unit 21 is turned on, the power supply 200 supplies power to the electrical load 300. Specifically, the power supply 200 outputs a power supply signal, the power supply signal is output to the electrical load 300 through the switch unit 21, and the voltage stabilizing unit 23 performs voltage stabilizing processing on the power supply signal output by the switch unit 21, where the voltage stabilizing processing makes the power supply signal maintain a constant voltage value. For example, the power supply signal may be kept within a predetermined range, so as to prevent the electric load 300 from receiving a large current or a large voltage, and prevent the electric load 300 from being damaged.

In one embodiment, referring to fig. 3, the switching unit 21 of the present application includes: a ninth resistor R9, a tenth resistor R10, a fifth switch tube Q5, a sixth switch tube Q6 and a third capacitor C3. In this application, a switch tube may be provided, that is, the sixth switch tube Q6 may be omitted. The purpose of the fifth switch tube Q5 and the sixth switch tube Q6 is to avoid the voltage input by the power supply 200 from being too large and causing impact on the switch tubes, and therefore, the fifth switch tube Q5 and the sixth switch tube Q6 are provided to divide the voltage input by the power supply 200. The present application may further provide a plurality of switching tubes, which is not limited herein.

Specifically, a first end of the ninth resistor R9 is connected to a first end of the switch unit 21, and a second end of the ninth resistor R9 is commonly connected to a control end of the fifth switch Q5 and a control end of the sixth switch Q6. A first end of the fifth switching tube Q5 is commonly connected with a first end of the sixth switching tube Q6, and is connected with a first end of the switching unit 21. A second end of the fifth switching tube Q5 and a second end of the sixth switching tube Q6 are commonly connected, and are connected to a second end of the switching unit 21, and the third capacitor C3 and the tenth resistor R10 are connected in series and then connected between the first end and the second end of the fifth switching tube Q5.

In this embodiment, when the first output terminal Out1 of the driving circuit 10 outputs a high-level switching control signal and the driving circuit 10 outputs a reference control signal, the fifth switching tube Q5 and the sixth switching tube Q6 are turned on because of a voltage difference between the switching control signal and the reference control signal, and at this time, the power supply 200 outputs a power supply signal to the electrical load 300 through the fifth switching tube Q5 and the sixth switching tube Q6. When the first output end Out1 of the driving circuit 10 outputs a low-level switching control signal and the driving circuit 10 outputs a reference control signal, the fifth switching tube Q5 and the sixth switching tube Q6 are turned off because there is no voltage difference between the switching control signal and the reference control signal, and at this time, the power supply 200 stops outputting the power supply signal to the electrical load 300.

The fifth switching tube Q5 and the sixth switching tube Q6 of the present application may be MOS tubes, and specifically may be N-type MOS tubes (N-type metal-oxide-semiconductor). When the switch control signal and the reference control signal have a voltage difference, the control ends G of the corresponding fifth switch tube Q5 and the sixth switch tube Q6 are greatly greater than the voltage of the second end S, so that the fifth switch tube Q5 and the sixth switch tube Q6 can be conducted.

With continued reference to fig. 2 and 3. The voltage of the ground terminal is set to 0V, and the voltages of the other terminals can be referenced to the ground terminal. If the voltage input by the power supply is 12V, when the first output end Out1 of the driving circuit 10 outputs a high-level switching control signal, the fifth switching tube Q5 and the sixth switching tube Q6 are turned on, and at this time, the voltage at the second ends of the fifth switching tube Q5 and the sixth switching tube Q6 is 12V. When the first power supply outputs a 12V power supply signal, a reference point of the first output terminal Out1 of the driving circuit 10 outputting a high-level 12V switching control signal is the second terminals of the fifth switching tube Q5 and the sixth switching tube Q6, so that if the ground terminal is taken as the reference point, the voltage of the switching control signal corresponding to the ground terminal is 24V at this time. Therefore, when the fifth switching tube Q5 and the sixth switching tube Q6 of the present application are turned on, the voltage of the second end of the fifth switching tube Q5 and the sixth switching tube Q6 is equal to the voltage input by the power supply, and the problem that the first end and the second end of the fifth switching tube Q5 and the sixth switching tube Q6 are directly shorted through the rack due to the fact that the fifth switching tube Q5 and the sixth switching tube Q6 are connected to the negative electrode of the power supply is avoided.

In the present embodiment, the first output terminal Out1 of the driving circuit 10 is used to output a switching control signal to the control terminal of the switching unit 21, and the driving circuit 10 is used to output a reference control signal to the second terminal of the switching unit 21. The switch control signal and the reference control signal have a certain voltage difference. The switching of the switching unit 21 is controlled by using a pressure difference between the switching control signal and the reference control signal. Therefore, the present application does not refer to the ground terminal for the control of the switching unit 21, but drives the switching unit 21 by using the voltage difference between the switching control signal and the reference control signal to control the connection state of the power supply 200 and the electrical load 300. By utilizing the scheme, the condition of direct short circuit can not occur at the first end and the second end of the switch unit 21, and the problem of control function failure of a switch tube caused by direct connection of the grounding end of equipment and a rack is avoided.

In an embodiment of the present application, as shown in fig. 3, the slow start unit 22 of the present application includes a slow start capacitor C4 and an eleventh resistor R11, the slow start unit 22 is connected to the driving circuit 10 and the switch unit 21, respectively, and the slow start unit 22 is configured to control charging and discharging of the slow start capacitor C4 according to a switch control signal, so as to control the switch unit 21 to be turned on or off.

Specifically, a first end of the slow start capacitor C4 and a first end of the eleventh resistor R11 are commonly connected to the control end of the sixth switching tube Q6, and a second end of the slow start capacitor C4 and a second end of the eleventh resistor R11 are commonly connected to the second end of the sixth switching tube Q6. In this embodiment, when the slow-start capacitor C4 receives the high-level switch control signal, the charging is started. When the slow-start capacitor C4 is charged to a preset voltage, the control switch unit 21 is turned on in a delayed manner, and when the slow-start capacitor C4 receives a low-level switch control signal, the discharge is started. When the slow-start capacitor C4 discharges to a preset voltage, the control switch unit 21 is turned off in a delayed manner. The slow starting unit 22 is arranged, so that the conducting speed of the switch unit 21 is reduced, the switch unit 21 can be better protected, the switch unit 21 is prevented from being damaged due to impact of large voltage, the service life of the switch unit 21 can be prolonged, and the service life of the drive control circuit 400 is further prolonged.

In one embodiment, as shown with reference to fig. 3, the voltage stabilization unit 23 includes: the first voltage-regulator tube D1, specifically, a first end of the first voltage-regulator tube D1 is connected to a second end of the switch unit 21, a second end of the first voltage-regulator tube D1 is grounded, and the first voltage-regulator tube D1 is configured to perform voltage-stabilizing processing on a power supply signal output by the switch unit 21 when the switch unit 21 is turned on.

In one embodiment, referring to fig. 3, the output switch circuit 20 further includes: a twelfth resistor R12, a fifth capacitor C5, and a sixth capacitor C6.

Specifically, the twelfth resistor R12 is connected between the second end of the switch unit 21 and the electrical load 300, the first end of the fifth capacitor C5 is connected to the second end of the switch unit 21, the second end of the fifth capacitor C5 is grounded, the sixth capacitor C6 is connected in parallel to the fifth capacitor C5, the fifth capacitor C5 and the sixth capacitor C6 are configured to filter the power supply signal output by the switch unit 21, and the twelfth resistor R12 is configured to perform current limiting processing on the power supply signal output by the switch unit 21.

An electronic device is further provided in the embodiment of the present application, and as shown in fig. 4, the electronic device includes a main control circuit 100 and a driving control circuit 400 as described above, where the main control circuit 100 is connected to the driving control circuit 400, and is configured to provide a driving control signal to control an operating state of the driving control circuit 400.

In one embodiment, the electronic device of the present application may be an output control device, the output control device is configured to connect the power supply 200 and the electrical load 300, and the output control device is configured to control the connection between the power supply 200 and the electrical load 300, so that the power supply 200 supplies power to the electrical load 300. The main control circuit 100 may be a main control chip of an output control device, and the main control chip is used to provide a driving control signal to control the connection between the power supply 200 and the electrical load 300. For example, the output control device may be a power adapter or other device that performs power output control.

The embodiment of the present application further provides an electronic device, which is shown in fig. 5 and includes a main control circuit 100, a power supply 200, and a driving control circuit 400 as described above, where the main control circuit 100 is connected to the driving control circuit 400, the main control circuit 100 is configured to provide a driving control signal to control a working state of the driving control circuit 400, and the driving control circuit 400 is configured to control an electric energy output of the power supply 200.

In one embodiment, the electronic device may be an energy storage device, wherein the power supply 200 may be a battery pack in the energy storage device. The energy storage device may be connected to the electrical load 300 to supply power to the electrical load 300. The main control circuit 100 may be a main control chip in the energy storage device, and the main control chip is used to provide a driving control signal to control the driving control circuit 400 as shown above to implement connection between the battery pack and the electrical load 300, so as to control the battery pack to supply power to the electrical load 300.

The present application controls the connection state between power supply 200 and electric load 300 without using a ground terminal as a reference, and drives the connection state between power supply 200 and electric load 300 using a voltage difference between a switching control signal and a reference control signal. By using the scheme, the drive control circuit 400 cannot be directly short-circuited, and the problem that the control function of the drive control circuit 400 is invalid when the grounding end of the electronic equipment is directly connected with the rack is avoided.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A drive control circuit, comprising:

2. The drive control circuit according to claim 1, wherein the drive circuit includes an optical coupling unit, a conversion unit, and an amplification unit:

3. The drive control circuit according to claim 2, wherein the optical coupling unit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first switching tube and a first optical coupler isolator; wherein the content of the first and second substances,

4. The drive control circuit according to claim 2, wherein the conversion unit includes: the third resistor, the fourth resistor, the fifth resistor, the sixth resistor, the seventh resistor, the first capacitor, the second capacitor and the second switch tube are connected in series; wherein the content of the first and second substances,

a first end of the fifth resistor is connected with a first input end of the conversion unit, and a second end of the fifth resistor is connected with a control end of the second switching tube; the first capacitor is connected between the control end of the second switch tube and the first end of the second switch tube; the sixth resistor is connected with the first capacitor in parallel; the first end of the second switching tube is connected with the second output end of the conversion unit; the second end of the second switch tube is connected with the second end of the seventh resistor, and the first end of the seventh resistor is connected with the second input end of the conversion unit; the second end of the second switching tube is connected with the first output end of the conversion unit; and the first end of the second capacitor is connected with the first end of the seventh resistor, and the second end of the second capacitor is connected with the first end of the second switch tube.

5. The drive control circuit according to claim 4, wherein the amplifying unit includes: the eighth resistor, the third switching tube and the fourth switching tube; wherein the content of the first and second substances,

6. The drive control circuit of claim 1, wherein the output switching circuit comprises:

the first end of the switch unit is connected with the power supply, and the second end of the switch unit is connected with the second output end of the driving circuit and is used for being connected with an electric load; the control end of the switch unit is connected with the first output end of the driving circuit; the switch unit is used for switching on or switching off the connection between the power supply and the electric load according to the switch control signal and the reference control signal;

7. The drive control circuit of claim 6, wherein the output switching circuit further comprises:

8. The drive control circuit according to claim 6, wherein the switching unit includes: a ninth resistor, a tenth resistor, a fifth switching tube, a sixth switching tube and a third capacitor; wherein the content of the first and second substances,

a first end of the ninth resistor is connected with a first end of the switch unit, and a second end of the ninth resistor is connected with a control end of the fifth switch tube and a control end of the sixth switch tube; the first end of the fifth switching tube is connected with the first end of the sixth switching tube in a common mode and is connected with the first end of the switching unit, the second end of the fifth switching tube is connected with the second end of the sixth switching tube in a common mode and is connected with the second end of the switching unit, and the third capacitor and the tenth resistor are connected between the first end and the second end of the fifth switching tube after being connected in series.

9. The drive control circuit according to claim 8, wherein the slow start unit includes: a slow starting capacitor and an eleventh resistor; wherein the content of the first and second substances,

10. An electronic device, comprising a master control circuit and the drive control circuit as claimed in any one of claims 1 to 9, wherein the master control circuit is connected to the drive control circuit for providing a drive control signal to control the operating state of the drive control circuit.