Power supply control circuit and energy storage system

Abstract

The utility model relates to the technical field of energy storage power supplies, in particular to a power supply control circuit and an energy storage system, the circuit comprises an input judgment module, a monopulse module, a selection module and a switch module, the monopulse module is respectively connected with the input judgment module and the selection module, the selection module is connected with an input source and the switch module, and the switch module is connected with the input source. The switch module is connected with an input source and a load. The input source comprises a first input source and a second input source, the input judgment module is also respectively connected with the first input source and the second input source, and the input judgment module is used for outputting a first control signal to the monopulse module when both the first input source and the second input source are electrified, so that the monopulse module outputs a monopulse signal to the selection module; therefore, when the two input sources are electrified, the single pulse signal is used for short-time power-off and then power-on, and then output is activated. And the selection module is used for controlling the switch module to be switched on or switched off based on the monopulse signal and the input source so as to control the input source to power on or power off the load at the same time.

Description

[Technical field]

[0001] The utility model relates to the technical field of energy storage power supplies, and in particular to a power supply control circuit and an energy storage system. [Background technology]

[0002] With the rapid development of society, the demand for new energy products, such as energy storage products, is increasing. Currently, most energy storage products on the market are powered by one battery pack, but with the competitive pressure and product upgrades, energy storage products are powered by one or two battery packs at the same time.

[0003] However, for energy storage products powered by two battery packs, after one battery pack is fully charged and then connected to another battery pack, the energy storage product cannot be automatically activated to charge the other battery pack. It can only be charged after being activated and turned on by the power switch, which reduces the performance of the energy storage product to a certain extent. [Contents of the utility model]

[0004] The embodiments of the utility model provide a power supply control circuit and an energy storage system, aiming to solve the technical problem in the prior art that the energy storage system has low performance when two input sources supply power to the energy storage system.

[0005] In order to solve the above technical problems, a technical solution adopted by the embodiment of the utility model is: providing a power supply control circuit, the power supply control circuit includes an input judgment module, a single pulse module, a selection module and a switch module;

[0006] The single pulse module is connected to the input judgment module and the selection module respectively, the selection module is connected to the input source and the switch module, and the switch module is connected to the input source and the load respectively;

[0007] The input source includes a first input source and a second input source, and the input judgment module is also connected to the first input source and the second input source respectively. The input judgment module is used to output a first control signal to the single pulse module when the first input source and the second input source are both powered, so that the single pulse module outputs a single pulse signal to the selection module;

[0008] The selection module is used to control the switch module to be turned on or off based on the single pulse signal and the input source.

[0009] Optionally, the selection module is used to control the switch module to disconnect when receiving the single pulse signal; and

[0010] When the single pulse signal is not received and both the first input source and the second input source are out of power, controlling the switch module to be disconnected; or

[0011] When the single pulse signal is not received and one of the first input source and the second input source has power, the switch module is controlled to be turned on.

[0012] Optionally, the input judgment module includes a diode D3, a diode D4, a resistor R6, a resistor R14, a resistor R17, a resistor R22, a resistor R23, a switch tube Q7 and a switch tube Q10;

[0013] The diode D3 is connected to the first input source, the anode of the diode D4 is connected to the second input source, the cathode of the diode D3 is connected to the control end of the switch tube Q10 through the resistor R22, the control end of the switch tube Q10 is also connected to the second end of the switch tube Q10 through the resistor R23, the second end of the switch tube Q10 is also used for grounding, the first end of the switch tube Q10 is connected to the second end of the switch tube Q7, the control end of the switch tube Q7 is connected to the cathode of the diode D4 through the resistor R14, the control end of the switch tube Q7 is also connected to the second end of the switch tube Q7 through the resistor R17, the first end of the switch tube Q7 is connected to the input source through the resistor R6, and the first end of the switch tube Q7 is also connected to the single pulse module.

[0014] Optionally, the single pulse module includes a control unit and a single pulse generating unit;

[0015] The control unit is connected to the input judgment module, and the control unit is also connected to the input source and the single pulse generation unit respectively, and the single pulse generation unit is connected to the selection module;

[0016] The control unit is used to receive the first control signal, and control the voltage of the input source to be transmitted to the single pulse generation unit based on the first control signal, so that the single pulse generation unit outputs a single pulse signal to the selection module.

[0017] Optionally, the control unit includes a resistor R3, a resistor R10, a resistor R13 and a switch tube Q4;

[0018] The control end of the switch tube Q4 is connected to the input judgment module through the resistor R10, and the control end of the switch tube Q4 is also connected to the second end of the switch tube Q4 through the resistor R13. The second end of the switch tube Q4 is used for grounding. The first end of the switch tube Q4 is connected to the input source through the resistor R3, and the first end of the switch tube Q4 is also connected to the single pulse generation unit.

[0019] Optionally, the single pulse generating unit includes a resistor R15, a resistor R21, a resistor R24, a capacitor C1, a capacitor C2, a diode D5 and a switch tube Q8;

[0020] The first end of the switch tube Q8 is connected to the first end of the switch tube Q4 through the resistor R15, and the first end of the switch tube Q8 is also connected to the control end of the switch tube Q8 through the resistor R21. The control end of the switch tube Q8 is grounded through the capacitor C2. The capacitor C2 is connected to the anode of the diode D5. The cathode of the diode D5 is respectively connected to the first end of the capacitor C1 and the first end of the resistor R24. The first end of the resistor R24 ​​is also connected to the first end of the switch tube Q4. The capacitor C1 and the resistor R24 ​​are also used for grounding. The second end of the switch tube Q8 is connected to the selection module.

[0021] Optionally, the selection module includes a resistor R1, a resistor R16, a resistor R20 and a switch tube Q9;

[0022] The control end of the switch tube Q9 is connected to the single pulse module through the resistor R16, and the control end of the switch tube Q9 is also connected to the second end of the switch tube Q9 through the resistor R20. The second end of the switch tube Q9 is also used for grounding, and the first end of the switch tube Q9 is also connected to the input source through the resistor R1.

[0023] Optionally, the switch module includes a first switch unit and a second switch unit;

[0024] The control ends of the first switch unit and the second switch unit are both connected to the selection module, the first switch unit is connected to the first input source and the first load respectively, and the second switch unit is connected to the second input source and the second load respectively;

[0025] The first switch unit is used to receive the driving signal output by the selection module, and control the first input source to supply power to the first load based on the driving signal;

[0026] The second switch unit is used to receive the driving signal output by the selection module, and control the second input source to supply power to the second load based on the driving signal.

[0027] Optionally, the first switch unit includes a resistor R4, a resistor R8, a resistor R11, a resistor R18, a switch tube Q1 and a switch tube Q5;

[0028] The control end of the switch tube Q5 is connected to the selection module through the resistor R11, and the control end of the switch tube Q5 is also connected to the second end of the switch tube Q5 through the resistor R18, and the second end of the switch tube Q5 is also used for grounding. The first end of the switch tube Q5 is connected to the control end of the switch tube Q1 through the resistor R8, and the first end of the switch tube Q1 is connected to the first input source. The first end of the switch tube Q1 is also connected to the control end of the switch tube Q1 through the resistor R4, and the second end of the switch tube Q1 is connected to the first load.

[0029] In order to solve the above technical problems, another technical solution adopted by the embodiment of the utility model is: to provide an energy storage system, the energy storage system comprising:

[0030] load; and

[0031] A power supply control circuit as described above.

[0032] Different from the related art, the utility model provides a power supply control circuit and energy storage system, the power supply control circuit includes an input judgment module, a single pulse module, a selection module and a switch module, the single pulse module is connected to the input judgment module and the selection module respectively, the selection module is connected to the input source and the switch module, and the switch module is connected to the input source and the load respectively. The input source includes a first input source and a second input source, the input judgment module is also connected to the first input source and the second input source respectively, the input judgment module is used to output a first control signal to the single pulse module when the first input source and the second input source are both powered, so that the single pulse module outputs a single pulse signal to the selection module, so that when both input sources are powered, the single pulse signal is used to short-term power off and then power on, thereby activating the output. The selection module is used to control the switch module to be turned on or off based on the single pulse signal and the input source, so as to control the input source to power on or off the load at the same time.

Brief Description of the Drawings

[0033] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0034] Figure 1 This is an application scenario provided by an embodiment of the utility model;

[0035] Figure 2 It is a structural block diagram of a power supply control circuit provided by an embodiment of the utility model;

[0036] Figure 3 It is a circuit diagram of a power supply control circuit provided by an embodiment of the utility model;

[0037] Figure 4 This is a circuit diagram of a power supply control circuit provided by another embodiment of the utility model. [Specific implementation method]

[0038] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0039] The technical features involved in the various embodiments of the present application described below do not conflict with each other and can be combined with each other.

[0040] When an element is referred to as being “connected to” another element, it can be directly connected to the other element, or one or more intervening elements may be present therebetween.

[0041] The terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more.

[0042] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0043] See also Figure 1 , Figure 1 This is an application scenario provided by the embodiment of the utility model, such as Figure 1 As shown, the application scenario 1 includes an energy storage system 100 and an input source 200, the energy storage system 100 is connected to the input source 200, and the input source 200 is used to output electrical energy to the energy storage system 100. Figure 1As shown, the energy storage system 100 includes a load 10 and a power supply control circuit 20, wherein the load includes a first load 11 and a second load 12; the input source 200 includes a first input source 201 and a second input source 202; the first input source 201 and the second input source 202 are both connected to the power supply control circuit 20, and the power supply control circuit 20 is also respectively connected to the first load 11 and the second load 12. Specifically, the power supply control circuit 20 is used to determine whether the first input source 201 and the second input source 202 have a voltage output. When the first input source 201 and / or the second input source 202 have a voltage output, the first load 11 and / or the second load 12 are powered according to the output voltage; if the first input source 201 and the second input source 202 have no voltage output, the first load 11 and the second load 12 are stopped from being powered.

[0044] In some embodiments, the input source 200 may be a photovoltaic input source / grid or a battery; if the input source 200 is a photovoltaic input source / grid, the load 10 is a battery, and the power supply control circuit 20 receives the voltage output by the photovoltaic input source / grid and charges the battery based on the voltage. If the input source 200 is a battery, the load 10 is an electrical device, and the battery is discharged to the power supply control circuit 20, so that the power supply control circuit 20 supplies power to the electrical device based on the discharge voltage of the battery.

[0045] See also Figure 2 , Figure 2 is a structural block diagram of a power supply control circuit provided by an embodiment of the utility model, such as Figure 2 As shown, the power supply control circuit 20 includes an input judgment module 21, a single pulse module 22, a selection module 23 and a switch module 24;

[0046] The single pulse module 22 is connected to the input judgment module 21 and the selection module 23 respectively, the selection module 23 is connected to the input source 200 and the switch module 24, and the switch module 24 is connected to the input source 200 and the load 10 respectively;

[0047] The input source 200 includes a first input source 201 and a second input source 202. The input judgment module 21 is also connected to the first input source 201 and the second input source 202 respectively. The input judgment module 21 is used to output a first control signal to the single pulse module 22 when the first input source 201 and the second input source 202 are both powered, so that the single pulse module 22 outputs a single pulse signal to the selection module 23.

[0048] The selection module 23 is used to control the switch module 24 to be turned on or off based on the single pulse signal and the input source 200 .

[0049] Specifically, when the first input source 201 and the second input source 202 are both connected to the input determination module 21 , the input determination module 21 is used to determine whether the first input source 201 and the second input source 202 have voltage outputs.

[0050] When both the first input source 201 and the second input source 202 have voltage outputs, the input judgment module 21 will output a first control signal to the single pulse module 22 to control the single pulse module 22 to output a single pulse signal to the selection module 23, so that the selection module 23 controls the switch module 24 to be disconnected according to the single pulse signal. It should be noted that the single pulse signal is a high-level signal that lasts for a period of time. When the single pulse module 22 outputs a single pulse signal to the selection module 23, the selection module 23 will be turned on for a short time based on the single pulse signal, so that the switch module 24 is disconnected; when the single pulse signal ends, the signal output by the single pulse module 22 turns into a low-level signal, and the selection module 23 is cut off, so that the voltage of the input source 200 is directly input to the switch module 24, and the switch module 24 is turned on, so that the input source 200 supplies power to the load 10.

[0051] When one of the first input source 201 and the second input source 202 has a voltage output, the input judgment module 21 will output a second control signal to the single pulse module 22 to control the single pulse module 22 to be disconnected, so that no single pulse signal is output. At this time, the selection module 23 will control the switch module 24 to be turned on based on the voltage output by the first input source 201 or the second input source 202.

[0052] When both the first input source 201 and the second input source 202 have no voltage output, the input judgment module 21 will output a second control signal to the single pulse module 22, so that the single pulse module 22 has no pulse signal output. At this time, the selection module 23 is in a cut-off state, and since both the first input source 201 and the second input source 202 have no voltage output, the switch module 24 is disconnected.

[0053] Among them, Figure 2As shown, the switch module 24 includes a first switch unit 241 and a second switch unit 242, the control ends of the first switch unit 241 and the second switch unit 242 are both connected to the selection module 23, the first switch unit 241 is respectively connected to the first input source 201 and the first load 11, and the second switch unit 242 is respectively connected to the second input source 202 and the second load 12;

[0054] The first switch unit 241 is used to receive the driving signal output by the selection module 23, and control the first input source 201 to supply power to the first load 11 based on the driving signal;

[0055] The second switch unit 242 is used to receive the driving signal output by the selection module 23 , and control the second input source 202 to supply power to the second load 12 based on the driving signal.

[0056] Specifically, when both the first input source 201 and the second input source 202 are powered, the selection module 23 will be turned on for a short time and then turned off according to the single pulse signal. When the selection module 23 is turned on, the switch module 24 is turned off because it does not receive the driving signal. When the selection module 23 is turned off, the selection module 23 will output a driving signal based on the input source 200, and the switch module 24 will be turned on based on the driving signal output by the selection module 23. At this time, the first input source 201 will power the first load 11 through the first switch unit 241, and the second input source 202 will power the second load 12 through the second switch unit 242, thereby achieving simultaneous power-on.

[0057] When one of the first input source 201 and the second input source 202 has power, the first switch module 241 and the second switch module 242 are both turned on based on the driving signal. At this time, only one input source has power, so only one load 10 is in a charging state.

[0058] When both the first input source 201 and the second input source 202 have no power, the first switch unit 241 and the second switch unit 242 are both in an off state, so the first load 11 and the second load 12 are both in a power-off state.

[0059] For details, please refer to Figure 3 , Figure 3 is a circuit diagram of a power supply control circuit provided by an embodiment of the utility model, such as Figure 3 As shown, the first switch unit 241 includes a resistor R4, a resistor R8, a resistor R11, a resistor R18, a switch tube Q1 and a switch tube Q5;

[0060] The control end of the switch tube Q5 is connected to the selection module 23 through the resistor R11, and the control end of the switch tube Q5 is also connected to the second end of the switch tube Q5 through the resistor R18. The second end of the switch tube Q5 is also used for grounding. The first end of the switch tube Q5 is connected to the control end of the switch tube Q1 through the resistor R8, the first end of the switch tube Q1 is connected to the first input source 201, the first end of the switch tube Q1 is also connected to the control end of the switch tube Q1 through the resistor R4, and the second end of the switch tube Q1 is connected to the first load 11.

[0061] like Figure 3 As shown, the second switch unit 242 includes a resistor R2, a resistor R9, a resistor R12, a resistor R19, a switch tube Q2 and a switch tube Q6;

[0062] The control end of the switch tube Q6 is connected to the selection module 23 through the resistor R12, and the control end of the switch tube Q6 is also connected to the second end of the switch tube Q6 through the resistor R19. The second end of the switch tube Q6 is also used for grounding. The first end of the switch tube Q6 is connected to the control end of the switch tube Q2 through the resistor R9, and the first end of the switch tube Q2 is connected to the second input source 202. The first end of the switch tube Q2 is also connected to the control end of the switch tube Q2 through the resistor R2, and the second end of the switch tube Q2 is connected to the second load 12.

[0063] When the selection module 23 outputs a driving signal, the switch tube Q5 and the switch tube Q6 are turned on based on the driving signal. When the switch tube Q5 and the switch tube Q6 are turned on, the switch tube Q1 and the switch tube Q2 are also turned on, so that the first input source 201 supplies power to the first load 11 through the switch tube Q1, and the second input source 202 supplies power to the second load 12 through the switch tube Q2.

[0064] In some embodiments, Figure 3 As shown, the input judgment module 21 includes a diode D3, a diode D4, a resistor R6, a resistor R14, a resistor R17, a resistor R22, a resistor R23, a switch tube Q7 and a switch tube Q10;

[0065] The diode D3 is connected to the first input source 201, the anode of the diode D4 is connected to the second input source 202, the cathode of the diode D3 is connected to the control end of the switch tube Q10 through the resistor R22, the control end of the switch tube Q10 is also connected to the second end of the switch tube Q10 through the resistor R23, the second end of the switch tube Q10 is also used for grounding, the first end of the switch tube Q10 is connected to the second end of the switch tube Q7, the control end of the switch tube Q7 is connected to the cathode of the diode D4 through the resistor R14, the control end of the switch tube Q7 is also connected to the second end of the switch tube Q7 through the resistor R17, the first end of the switch tube Q7 is connected to the input source 200 through the resistor R6, and the first end of the switch tube Q7 is also connected to the single pulse module 22.

[0066] Specifically, when both the first input source 201 and the second input source 202 are powered, the switch tube Q7 and the switch tube Q10 are turned on based on the voltage output by the input source 200, so that the second end of the resistor R6 is a low-level signal, and then the first control signal is output to the single pulse module 22. When one of the first input source 201 and the second input source 202 is powered, the switch tube Q7 or the switch tube Q10 is turned on based on the output voltage of the input source 200, and since one of the switch tubes is in the off state, the second end of the resistor R6 is a high-level signal, and then the second control signal is output to the single pulse module 22. When both the first input source 201 and the second input source 202 are not powered, the switch tube Q7 and the switch tube Q10 are in the off state, so that the second end of the resistor R6 is a high-level signal, and then the second control signal is output.

[0067] In yet another embodiment, Figure 3 As shown, the input judgment module 21 further includes a diode D1 and a diode D2, the anode of the diode D1 is connected to the first input source 201, the anode of the diode D2 is connected to the second input source 202, and the cathodes of the diode D1 and the diode D2 are both connected to the first end of the resistor R6. The diode D1 and the diode D2 are anti-backflow diodes, which are used to prevent the current in the single pulse module 22 or the selection module 23 from flowing into the input source 200.

[0068] Further, such as Figure 2 As shown, the single pulse module 22 includes a control unit 221 and a single pulse generating unit 222;

[0069] The control unit 221 is connected to the input judgment module 21, and the control unit 221 is also connected to the input source 200 and the single pulse generation unit 222 respectively, and the single pulse generation unit 222 is connected to the selection module 23;

[0070] The control unit 221 is used to receive the first control signal, and control the voltage of the input source 200 to be transmitted to the single pulse generating unit 222 based on the first control signal, so that the single pulse generating unit 222 outputs a single pulse signal to the selecting module 23 .

[0071] When the input judgment module 21 outputs the second control signal, the control unit 221 is turned on based on the second control signal, so that the single pulse generation unit 222 is turned off, and further the single pulse generation unit 222 has no pulse signal output.

[0072] In some embodiments, Figure 3 As shown, the control unit 221 includes a resistor R3, a resistor R10, a resistor R13 and a switch tube Q4; the single pulse generating unit includes a resistor R15, a resistor R21, a resistor R24, a capacitor C1, a capacitor C2, a diode D5 and a switch tube Q8;

[0073] The control end of the switch tube Q4 is connected to the input judgment module 21 through the resistor R10, and the control end of the switch tube Q4 is also connected to the second end of the switch tube Q4 through the resistor R13. The second end of the switch tube Q4 is used for grounding. The first end of the switch tube Q4 is connected to the input source 200 through the resistor R3, and the first end of the switch tube Q4 is also connected to the single pulse generation unit 222.

[0074] The first end of the switch tube Q8 is connected to the first end of the switch tube Q4 through the resistor R15, and the first end of the switch tube Q8 is also connected to the control end of the switch tube Q8 through the resistor R21. The control end of the switch tube Q8 is grounded through the capacitor C2. The capacitor C2 is connected to the anode of the diode D5. The cathode of the diode D5 is respectively connected to the first end of the capacitor C1 and the first end of the resistor R24. The first end of the resistor R24 ​​is also connected to the first end of the switch tube Q4. The capacitor C1 and the resistor R24 ​​are also used for grounding. The second end of the switch tube Q8 is connected to the selection module 23.

[0075] Specifically, when the input judgment module 21 outputs the first control signal, the switch tube Q4 is turned off based on the first control signal. At this time, on the one hand, the voltage of the input source 200 will charge the capacitor C1 through the resistor R3, and at the same time, the voltage of the input source 200 will charge the capacitor C2 through the resistor R15 and the resistor R21. Due to the limitation of the resistor R15 and the resistor R21, the charging current of the capacitor C1 is greater than the charging current of the capacitor C2, so that the voltage of the capacitor C1 is greater than the voltage on the capacitor C2, and the diode D5 is turned off, thereby controlling the capacitor C2 to be continuously in a charging state; on the other hand, during the charging process of the capacitor C2, the voltage of the input source 200 will also be input to the switch tube Q8, and due to the effect of the resistor R21, the switch tube Q8 is turned on because the conduction voltage drop is satisfied. When the switch tube Q8 is turned on, the second end of the switch tube Q8 is at a high level, and when the voltage of the capacitor C2 is close to the voltage of the input source 200, the switch tube Q8 will be cut off due to no voltage drop, so that the second end of the switch tube Q8 is at a low level, and then a pulse signal is output. It should be noted that when the switch tube Q8 is turned off, since the switch tube Q4 is continuously in the off state, the capacitor C2 does not have a discharge loop, so that the switch tube Q8 is continuously in the off state. Therefore, the single pulse generation unit 222 can only output one pulse signal.

[0076] When the input judgment module 21 outputs the second control signal, the switch tube Q4 will be turned on based on the second control signal, so that the first end of the switch tube Q4 is connected to the ground end. At this time, on the one hand, the switch tube Q8 is turned off due to the lack of conduction voltage drop; on the other hand, the capacitor C1 will be discharged through the switch tube Q4 and the resistor R24 ​​at the same time, and the capacitor C2 will be discharged through the resistor R21 and the resistor R15. Due to the effect of the resistor R21 and the resistor R15, the capacitor C1 is discharged faster than the capacitor C2. When the voltage on the capacitor C1 is less than the voltage on the capacitor C2, the diode D5 is turned on, so that the capacitor C2 is discharged through the diode D5.

[0077] In yet another embodiment, Figure 3 As shown, the selection module 23 includes a resistor R1, a resistor R16, a resistor R20 and a switch tube Q9; the control end of the switch tube Q9 is connected to the single pulse module 22 through the resistor R16, and the control end of the switch tube Q9 is also connected to the second end of the switch tube Q9 through the resistor R20, the second end of the switch tube Q9 is also used for grounding, and the first end of the switch tube Q9 is also connected to the input source 200 through the resistor R1.

[0078] Specifically, after the single pulse module 22 outputs a single pulse signal, since the single pulse signal is a high level signal that lasts for a period of time, the switch tube Q9 will be turned on based on the single pulse signal. When the switch tube Q9 is turned on, the first end of the switch tube Q9 is at a low level, so that the switch module 24 is turned off; when the single pulse signal ends, the switch tube Q9 is in a cut-off state. When the switch tube Q9 is cut off, the first end of the switch tube Q9 is connected to the input source 200, so the switch module 24 will be turned on based on the voltage output by the input source 200.

[0079] In some embodiments, see Figure 4 , Figure 4 is a circuit diagram of a power supply control circuit provided by another embodiment of the utility model, such as Figure 4 As shown, the selection module 23 also includes a resistor R5, a resistor R7 and a switch tube Q3; the control end of the switch tube Q3 is connected to the input judgment module 21 through the resistor R5, and the control end of the switch tube Q3 is also connected to the second end of the switch tube Q3 through the resistor R7, the second end of the switch tube Q3 is also used for grounding, and the first end of the switch tube Q3 is also connected to the resistor R1. Among them, the switch tube Q3 is a triode, and the switch tube Q3 works in an amplification state.

[0080] Specifically, when the input judgment module 21 outputs a second control signal, the second control signal will be output to the control end of the switch tube Q3 to turn on the switch tube Q3. When the switch tube Q3 is turned on, the voltage corresponding to the second control signal will be amplified and the amplified voltage will be input to the switch module 24 to turn on the switch module 24.

[0081] In another embodiment, the switch tube Q3 is also used to protect the load 11. When one of the first input source 201 and the second input source 202 has power and the voltage is too large, the switch tube Q3 will directly enter the saturation state, so that the first end of the switch tube Q3 is connected to the ground end, thereby discharging the voltage of the input source 200, thereby protecting the load 11 from damage and avoiding safety problems.

[0082] Further, such as Figure 4As shown, when both the first input source 201 and the second input source 202 are powered, the switch tube Q7 and the switch tube Q10 are in the on state. At this time, the switch tube Q4 is turned off, and the voltage of the input source 200 is input to the switch tube Q8 through the resistor R3, so that the switch tube Q8 is turned on. At the same time, the capacitor C2 is also charged based on the voltage output by the input source 200. When the voltage of the capacitor C2 is close to the output voltage of the input source, the switch tube Q8 is turned off, thereby outputting a single pulse signal, so that the switch tube Q9 is turned on for a period of time according to the single pulse signal and then turned off. When the switch tube Q9 is turned on, the switch tubes Q5 and Q6 are turned off, and the switch tubes Q1 and Q2 are also turned off; when the switch tube Q9 is turned off, the switch tubes Q5 and Q6 are turned on based on the voltage of the input source, and the switch tubes Q1 and Q2 are also turned on, thereby starting to supply power to the load. Wherein, by outputting the single pulse signal, the switch module is powered off for a short time and then powered on again, thereby ensuring that the input source can be correctly activated.

[0083] When one of the first input source 201 and the second input source 202 is powered, the switch tube Q7 or the switch tube Q10 is in the cut-off state, so that the voltage of the input source 200 is input to the switch tube Q4, thereby turning on the switch tube Q4. When the switch tube Q4 is turned on, the switch tubes Q8 and Q9 are cut off. Therefore, when one of the first input source 201 and the second input source 202 is powered, the output voltage of the input source will be input to the switch tube Q3 through the resistor R6, so that the switch tube Q3 is turned on. Since the switch tube Q3 works in the amplification state, when the switch tube Q3 is turned on, the switch tubes Q5 and Q6 are also turned on, and the switch tubes Q1 and Q2 are also turned on, so that the first input source 201 supplies power to the first load 11 or the second input source 202 supplies power to the second load 12.

[0084] When both the first input source 201 and the second input source 202 have no power, the switch tube Q7 and the switch tube Q10 are both turned off. At this time, since the input source 200 has no power, the switch tube Q9 is turned off, and the switch tube Q3 is also in the off state, so that the switch tube Q1 and the switch tube Q2 are also in the off state, thereby causing the load to lose power.

[0085] The utility model provides a power supply control circuit and energy storage system, the power supply control circuit includes an input judgment module, a single pulse module, a selection module and a switch module, the single pulse module is connected to the input judgment module and the selection module respectively, the selection module is connected to the input source and the switch module, and the switch module is connected to the input source and the load respectively. The input source includes a first input source and a second input source, the input judgment module is also connected to the first input source and the second input source respectively, the input judgment module is used to output a first control signal to the single pulse module when the first input source and the second input source are both powered, so that the single pulse module outputs a single pulse signal to the selection module, so that when both input sources are powered, the single pulse signal is used to short-term power off and then power on, thereby activating the output. The selection module is used to control the switch module to be turned on or off based on the single pulse signal and the input source, so as to control the input source to power on or off the load at the same time.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A power supply control circuit, characterized in that: The power supply control circuit includes an input judgment module, a single pulse module, a selection module and a switch module; The single pulse module is connected to the input judgment module and the selection module respectively, the selection module is connected to the input source and the switch module, and the switch module is connected to the input source and the load respectively; The input source includes a first input source and a second input source, and the input judgment module is also connected to the first input source and the second input source respectively. The input judgment module is used to output a first control signal to the single pulse module when the first input source and the second input source are both powered, so that the single pulse module outputs a single pulse signal to the selection module; The selection module is used to control the switch module to be turned on or off based on the single pulse signal and the input source.

2. The power supply control circuit according to claim 1, characterized in that: The selection module is used to control the switch module to disconnect when receiving the single pulse signal; and When the single pulse signal is not received and both the first input source and the second input source are out of power, controlling the switch module to be disconnected; or When the single pulse signal is not received and one of the first input source and the second input source has power, the switch module is controlled to be turned on.

3. The power supply control circuit according to claim 1, characterized in that: The input judgment module includes a diode D3, a diode D4, a resistor R6, a resistor R14, a resistor R17, a resistor R22, a resistor R23, a switch tube Q7 and a switch tube Q10; The diode D3 is connected to the first input source, the anode of the diode D4 is connected to the second input source, the cathode of the diode D3 is connected to the control end of the switch tube Q10 through the resistor R22, the control end of the switch tube Q10 is also connected to the second end of the switch tube Q10 through the resistor R23, the second end of the switch tube Q10 is also used for grounding, the first end of the switch tube Q10 is connected to the second end of the switch tube Q7, the control end of the switch tube Q7 is connected to the cathode of the diode D4 through the resistor R14, the control end of the switch tube Q7 is also connected to the second end of the switch tube Q7 through the resistor R17, the first end of the switch tube Q7 is connected to the input source through the resistor R6, and the first end of the switch tube Q7 is also connected to the single pulse module.

4. The power supply control circuit according to claim 1, characterized in that: The single pulse module includes a control unit and a single pulse generating unit; The control unit is connected to the input judgment module, and the control unit is also connected to the input source and the single pulse generation unit respectively, and the single pulse generation unit is connected to the selection module; The control unit is used to receive the first control signal, and control the voltage of the input source to be transmitted to the single pulse generation unit based on the first control signal, so that the single pulse generation unit outputs a single pulse signal to the selection module.

5. The power supply control circuit according to claim 4, characterized in that: The control unit includes a resistor R3, a resistor R10, a resistor R13 and a switch tube Q4; The control end of the switch tube Q4 is connected to the input judgment module through the resistor R10, and the control end of the switch tube Q4 is also connected to the second end of the switch tube Q4 through the resistor R13. The second end of the switch tube Q4 is used for grounding. The first end of the switch tube Q4 is connected to the input source through the resistor R3, and the first end of the switch tube Q4 is also connected to the single pulse generation unit.

6. The power supply control circuit according to claim 5, characterized in that: The single pulse generating unit comprises a resistor R15, a resistor R21, a resistor R24, a capacitor C1, a capacitor C2, a diode D5 and a switch tube Q8; The first end of the switch tube Q8 is connected to the first end of the switch tube Q4 through the resistor R15, and the first end of the switch tube Q8 is also connected to the control end of the switch tube Q8 through the resistor R21. The control end of the switch tube Q8 is grounded through the capacitor C2. The capacitor C2 is connected to the anode of the diode D5. The cathode of the diode D5 is respectively connected to the first end of the capacitor C1 and the first end of the resistor R24. The first end of the resistor R24 ​​is also connected to the first end of the switch tube Q4. The capacitor C1 and the resistor R24 ​​are also used for grounding. The second end of the switch tube Q8 is connected to the selection module.

7. The power supply control circuit according to any one of claims 1 or 2, characterized in that: The selection module includes a resistor R1, a resistor R16, a resistor R20 and a switch tube Q9; The control end of the switch tube Q9 is connected to the single pulse module through the resistor R16, and the control end of the switch tube Q9 is also connected to the second end of the switch tube Q9 through the resistor R20. The second end of the switch tube Q9 is also used for grounding, and the first end of the switch tube Q9 is also connected to the input source through the resistor R1.

8. The power supply control circuit according to any one of claims 1 or 2, characterized in that: The switch module includes a first switch unit and a second switch unit; The control ends of the first switch unit and the second switch unit are both connected to the selection module, the first switch unit is connected to the first input source and the first load respectively, and the second switch unit is connected to the second input source and the second load respectively; The first switch unit is used to receive the driving signal output by the selection module, and control the first input source to supply power to the first load based on the driving signal; The second switch unit is used to receive the driving signal output by the selection module, and control the second input source to supply power to the second load based on the driving signal.

9. The power supply control circuit according to claim 8, characterized in that: The first switch unit includes a resistor R4, a resistor R8, a resistor R11, a resistor R18, a switch tube Q1 and a switch tube Q5; The control end of the switch tube Q5 is connected to the selection module through the resistor R11, and the control end of the switch tube Q5 is also connected to the second end of the switch tube Q5 through the resistor R18, and the second end of the switch tube Q5 is also used for grounding. The first end of the switch tube Q5 is connected to the control end of the switch tube Q1 through the resistor R8, and the first end of the switch tube Q1 is connected to the first input source. The first end of the switch tube Q1 is also connected to the control end of the switch tube Q1 through the resistor R4, and the second end of the switch tube Q1 is connected to the first load.

10. An energy storage system, characterized in that: The energy storage system comprises: load; and A power supply control circuit as claimed in any one of claims 1 to 9.

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