An energy storage and discharge system

Abstract

The application provides an energy storage discharging system, and relates to the technical field of energy storage discharging, which comprises a power supply input interface, a slow power-up unit, a slow power-up control unit, an energy storage unit, a start-stop control unit, a sampling unit, a detection unit, a main loop switch unit and an output interface; the power supply input interface is connected with the input end of the main loop switch unit and the input end of the slow power-up unit; the output end of the slow power-up unit is connected with the first port of the slow power-up control unit; the output end of the main loop switch unit and the second port of the slow power-up control unit are connected with the port of the energy storage unit; the sampling unit is connected with the input end of the detection unit; and the output end of the detection unit is connected with the control end of the main loop switch unit. The application can avoid the problem that the power supply power source appears "malfunction" protection due to the large switching pressure difference in the process of switching the main loop, and improves the reliability of the energy storage discharging system.

Description

Technical Field

[0001] This invention relates to the field of energy storage and discharge technology, and more specifically, to an energy storage and discharge system. Background Technology

[0002] To meet the power requirements of high-power pulsed laser power supplies, existing technologies typically utilize capacitor energy storage. During capacitor energy storage, to avoid sudden voltage changes across the capacitor, a slow-on unit is usually incorporated into the energy storage discharge system to delay the time it takes for the capacitor to directly receive power, thus preventing capacitor damage. Existing slow-on units typically use the time constant of a timing device to control loop switching in the energy storage discharge system, achieving the slow-on function solely through time control. However, as the energy storage discharge system is used for longer periods, the time constant of the timing device changes, leading to a larger switching voltage difference during loop switching. This ultimately causes the power supply in the energy storage discharge system to malfunction, resulting in damage to the system and severely reducing its reliability. Summary of the Invention

[0003] This invention provides an energy storage discharge system to solve the technical problem that existing energy storage discharge systems are prone to "false tripping" protection, resulting in low reliability of the energy storage discharge system.

[0004] To achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows:

[0005] In a first aspect, embodiments of the present invention provide an energy storage and discharge system, comprising: a power supply input interface, a soft power-on unit, a soft power-on control unit, an energy storage unit, a start / stop control unit, a sampling unit, a detection unit, a main circuit switch unit, and an output interface;

[0006] The power supply input interface is connected to the input terminal of the main circuit switch unit, the output terminal of the main circuit switch unit is connected to the port of the energy storage unit, the output terminal of the energy storage unit is connected to the output interface, and the main circuit switch unit is in the off state.

[0007] The power input interface is connected to the input terminal of the slow power-on unit, the output terminal of the slow power-on unit is connected to the first port of the slow power-on control unit, and the second port of the slow power-on control unit is connected to the port of the energy storage unit; the slow power-on unit is used for current limiting.

[0008] The start-stop control unit is connected to the control terminal of the slow power-on control unit. The start-stop control unit is used to output a low-level signal to the control terminal of the slow power-on control unit when it receives a signal to start charging, so as to control the first port and the second port of the slow power-on control unit to be turned on.

[0009] The sampling unit is connected with an input end of the detection unit, and an output end of the detection unit is connected with a control end of the main loop switch unit;

[0010] The sampling unit is configured to detect the voltage of the energy storage unit, and the detection unit is configured to trigger the main loop switch unit to conduct when the voltage of the energy storage unit is greater than a preset voltage threshold, so that the power supply input interface charges the energy storage unit through the main loop switch unit.

[0011] Further, the embodiment of the present application provides a first possible implementation manner of the first aspect, wherein the energy storage discharge system further comprises a shutdown discharge unit;

[0012] An input end of the shutdown discharge unit is connected with a third port of the slow power-on control unit, and an output end of the shutdown discharge unit is grounded.

[0013] The start-stop control unit is configured to output a high-level signal to a control end of the slow power-on control unit when a stop charging signal is received, so as to control the second port and the third port of the slow power-on control unit to conduct, and enable the energy storage unit to release electric energy to the shutdown discharge unit through the slow power-on control unit.

[0014] Further, the embodiment of the present application provides a second possible implementation manner of the first aspect, wherein the detection unit comprises a voltage comparator, a non-inverted input end of the voltage comparator is connected with the sampling unit, a non-inverted input end of the voltage comparator is connected with the start-stop control unit, and an output end of the voltage comparator is connected with a control end of the main loop switch unit.

[0015] The start-stop control unit is configured to output a high-level signal to the non-inverted input end of the voltage comparator when the energy storage discharge system discharges.

[0016] The voltage comparator is configured to trigger the main loop switch unit to restore the disconnected state when the non-inverted input end receives the high-level signal.

[0017] Further, the embodiment of the present application provides a third possible implementation manner of the first aspect, wherein the energy storage discharge system further comprises a switch unit and a main loop control unit.

[0018] An output end of the voltage comparator is connected with a control end of the switch unit, a first port of the switch unit is externally connected with a direct current power supply, and an output end of the switch unit is connected with a control end of the main loop control unit.

[0019] The voltage comparator is used to output a low-level signal to the control terminal of the switching unit when the voltage of the energy storage unit is greater than a preset voltage threshold, and the switching unit is used to output a high-level signal to the control terminal of the main circuit control unit when the control terminal receives the low-level signal.

[0020] The output terminal of the main circuit control unit is connected to the main circuit switch unit; the main circuit control unit is used to trigger the main circuit switch unit to conduct when the control terminal receives a high-level signal.

[0021] Furthermore, the present invention provides a fourth possible implementation of the first aspect, wherein the energy storage discharge system further includes: a status output unit;

[0022] The input terminal of the status output unit is connected to the output terminal of the main circuit control unit;

[0023] The status output unit is used to output a signal indicating that the energy storage unit has completed energy storage when a high-level signal is received at the output terminal of the main circuit control unit.

[0024] Furthermore, the present invention provides a fifth possible implementation of the first aspect, wherein the power-on control unit includes: a second switching device and a second electrical control device;

[0025] The control terminal of the second switching device is connected to the start / stop control unit, the first port of the second switching device is connected to an external DC power supply, and the output terminal of the second switching device is connected to the control system of the second electrical control device.

[0026] The second switching device is used to output a high-level signal to the control system of the second electrical control device when a low-level signal is received at the control terminal;

[0027] The first port of the controlled system of the second electrical control device is connected to the output terminal of the soft power-on unit, and the second port of the controlled system of the second electrical control device is connected to the port of the energy storage unit.

[0028] The second electrical control device is used to control the first port and the second port of the controlled system to be turned on when the control system receives a high-level signal.

[0029] Furthermore, this embodiment of the invention provides a sixth possible implementation of the first aspect, wherein the main circuit switching unit includes: a third switching device;

[0030] The control terminal of the third switching device is connected to the output terminal of the main circuit control unit, the input terminal of the third switching device is connected to the power supply input interface, and the output terminal of the third switching device is connected to the port of the energy storage unit.

[0031] Furthermore, the present invention provides a seventh possible implementation of the first aspect, wherein the energy storage discharge system further includes: a power-down retention unit;

[0032] The power-off retention unit is connected to the power input interface and the port of the energy storage unit;

[0033] The power-down retention unit is used to store voltage when the energy storage unit is charging and to provide delayed power supply when the energy storage unit releases electrical energy.

[0034] Furthermore, this embodiment of the invention provides an eighth possible implementation of the first aspect, wherein the energy storage discharge system further includes: an auxiliary power output interface;

[0035] One end of the auxiliary power output interface is connected to the power-off retention unit; the other end of the auxiliary power output interface is used to connect an external auxiliary power supply.

[0036] The power-off retention unit is also used to provide delayed power supply to the external auxiliary power supply through the auxiliary power output interface when the energy storage unit releases electrical energy.

[0037] Furthermore, the present invention provides a ninth possible implementation of the first aspect, wherein the energy storage and discharge system further includes: a filter unit;

[0038] The input terminal of the filtering unit is connected to the power supply input interface, and the output terminal of the filtering unit is connected to the input terminal of the main circuit switch unit.

[0039] This invention provides an energy storage and discharge system, comprising: a power supply input interface, a soft power-on unit, a soft power-on control unit, an energy storage unit, a start / stop control unit, a sampling unit, a detection unit, a main circuit switch unit, and an output interface. The power supply input interface is connected to the input terminal of the main circuit switch unit, the output terminal of the main circuit switch unit is connected to the port of the energy storage unit, the output terminal of the energy storage unit is connected to the output interface, and the main circuit switch unit is in an open state. The power supply input interface is connected to the input terminal of the soft power-on unit, the output terminal of the soft power-on unit is connected to the first port of the soft power-on control unit, and the second port of the soft power-on control unit is connected to the energy storage unit. The system includes: a port connection for the energy storage unit; a soft-on unit for current limiting; a start / stop control unit connected to the control terminal of the soft-on control unit, which outputs a low-level signal to the control terminal of the soft-on control unit when a power supply is connected to the power input interface, thereby controlling the first and second ports of the soft-on control unit to conduct; a sampling unit connected to the input terminal of the detection unit, and an output terminal of the detection unit connected to the control terminal of the main circuit switch unit; a sampling unit for detecting the voltage of the energy storage unit, which triggers the main circuit switch unit to conduct when the voltage of the energy storage unit exceeds a preset voltage threshold, so that the power input interface charges the energy storage unit through the main circuit switch unit. This invention achieves a soft-on function by allowing the power supply to charge the energy storage unit through a soft-on unit when the voltage of the energy storage unit is low, thus avoiding voltage surges and damage to the energy storage unit. The system uses a data acquisition unit to collect the voltage stored in the energy storage unit in real time, and controls the main circuit switch unit to conduct when the voltage exceeds a preset voltage threshold. This allows the power input interface to directly charge the energy storage unit through the main circuit switch unit. During the charging process, the main circuit switch unit only conducts when both the start / stop control unit and the detection unit output a low-level signal. This dual protection during main circuit switching implements an AND control between the start / stop control unit and the detection unit on the main circuit switch unit, preventing the power supply from malfunctioning due to increased voltage difference during main circuit switching and improving the reliability of the energy storage discharge system. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the main units of an energy storage and discharge system provided in an embodiment of the present invention;

[0042] Figure 2 This is a circuit diagram of an energy storage and discharge system provided in an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the overall unit of an energy storage and discharge system provided in an embodiment of the present invention. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0045] In existing energy storage discharge systems, high-power power supplies are typically required for high-peak-power pulse loads, and the detection and control section requires a separate dedicated power supply. This results in excessive power supply capacity, excessive equipment size due to the energy storage discharge system, and waste of resources. Furthermore, in existing energy storage discharge systems, when the system is in a shutdown discharge state, it relies on the internal discharge of the power supply. However, due to the small internal discharge load of the power supply and the excessively long discharge time, there is a potential safety hazard during shutdown.

[0046] Currently, electricity, as an indispensable clean energy source in people's daily lives, has excellent properties such as convenient transmission and easy conversion. In order to store temporarily unused electricity for later use, energy storage and discharge systems are usually used. Since the voltage of the energy storage unit in the energy storage and discharge system cannot change abruptly, the time constant of the time device of the slow power-on unit is usually used to control the circuit switching in the energy storage and discharge system, delaying the time when the energy storage unit directly receives power. Considering that the time constant of the time device in the slow power-on unit of the existing energy storage and discharge system changes with the increase of usage time, resulting in a larger switching voltage difference during the circuit switching process, the reliability of the energy storage and discharge system is reduced. To improve this problem, the present invention provides an energy storage and discharge system that can be applied to solve the technical problem of low reliability of the existing energy storage and discharge system during use. The following is a detailed description of the embodiments of the present invention.

[0047] This embodiment provides an energy storage and discharge system, see [link / reference] Figure 1 The diagram shows the main units of an energy storage and discharge system, which mainly includes: a power supply input interface 11, a soft power-on unit 12, a soft power-on control unit 13, an energy storage unit 14, a start / stop control unit 15, a sampling unit 16, a detection unit 17, a main circuit switch unit 18, and an output interface 19.

[0048] The power input interface 11 is connected to the port of the main circuit switch unit 18, the output terminal of the main circuit switch unit 18 is connected to the port of the energy storage unit 14, the output terminal of the energy storage unit 14 is connected to the output interface 19, and the main circuit switch unit 18 is in the off state.

[0049] The power input interface 11 is connected to the input terminal of the slow power-on unit 12, the output terminal of the slow power-on unit 12 is connected to the first port of the slow power-on control unit 13, and the second port of the slow power-on control unit 13 is connected to the port of the energy storage unit 14; the slow power-on unit 12 is used for current limiting.

[0050] See Figure 2 The circuit diagram shown is of an energy storage and discharge system. The power supply input interface 11 can be connected to a power supply JP201 to supply power to the energy storage unit and the energy storage and discharge system. The power supply JP201 is usually a DC power supply with a supply voltage of 24V. The positive terminal (pin 1) of the power supply JP201 is connected to the power supply input interface 11, and the negative terminal (pin 2) is grounded. The power supply JP201 can supply power to the energy storage unit 14 through the power supply input interface 11 and the main circuit switch unit 18. Under normal circumstances, the main circuit switch unit 18 is in the open state. At the beginning stage of energy storage, the power supply JP201 cannot directly supply power to the energy storage unit 14, thus avoiding the problem of damage to the energy storage unit 14 due to voltage surge. The slow power-on unit 12 includes resistors R201, R202 and R203 connected in series. One end of resistor R201 is connected to the power input interface 11, and one end of resistor R203 is connected to the first port of the slow power-on control unit 13. The resistors R201, R202 and R203 limit the current to prevent the energy storage unit 14 from burning out due to excessive current.

[0051] The start / stop control unit 15 is connected to the control terminal of the slow power-on control unit 13. The start / stop control unit 15 is used to output a low-level signal to the control terminal of the slow power-on control unit 13 when it receives a signal to start charging, so as to control the first port and the second port of the slow power-on control unit 13 to be turned on.

[0052] like Figure 2As shown, the start-stop control unit 15 can receive start-stop signals from the external control system board by setting the start-stop control transmission device JP202, and output a level signal to the control terminal of the power-on control unit 13 according to the received start-stop signals. When the external control system board sends a start signal (i.e., a signal to start charging), the start-stop control transmission device JP202 outputs a low-level signal to the control terminal of the power-on control unit 13 to control the first port and the second port of the power-on control unit 13 to be connected. The first port (pin 1) of the start-stop control transmission device JP202 is connected to the control terminal of the power-on control unit 13, and the second port (pin 2) of the start-stop control transmission device JP202 is grounded. The start-stop control unit 15 also includes a resistor R204. One end of the resistor R204 is connected to the first port (pin 1) of the start-stop control transmission device JP202, and the other end is connected to the DC power supply VCC. The resistor R204 is used to clamp the output signal of the start-stop control transmission device JP202.

[0053] The sampling unit 16 is connected to the input terminal of the detection unit 17, and the output terminal of the detection unit 17 is connected to the control terminal of the main circuit switch unit 18.

[0054] The sampling unit 16 is used to detect the voltage of the energy storage unit 14, and the detection unit 17 is used to trigger the main circuit switch unit 18 to conduct when the voltage of the energy storage unit 14 is greater than a preset voltage threshold, so that the power supply input interface 11 charges the energy storage unit 14 through the main circuit switch unit 18.

[0055] like Figure 2 As shown, one end of the sampling unit 16 is connected to the port of the energy storage unit 14, and the other end is connected to the input terminal of the detection unit 17. The sampling unit 16 is used to collect the voltage stored in the energy storage unit 14 in real time and transmit the collected voltage of the energy storage unit 14 to the detection unit 17. The sampling unit 16 includes: resistor R205, resistor R206, resistor R207, resistor R208 and capacitor C201. One end of resistor R205 is connected to the port of the energy storage unit 14, and the other end is connected to one end of resistor R206. The other end of resistor R206 is connected to one end of resistor R207, one end of resistor R208 and one end of capacitor C201. The other ends of resistor R204 and capacitor C201 are grounded. The other end of resistor R208 is connected to the input terminal of the detection unit 17. Among them, resistor R205, resistor R206 and resistor R208 play a current limiting role, resistor R207 is used for voltage regulation, and capacitor C201 is used for filtering.

[0056] The detection unit 17 only outputs a low-level signal when the voltage of the received energy storage unit 14 is greater than a preset voltage threshold, thereby triggering the main circuit switch unit 18 to conduct, so that the power supply input interface 11 charges the energy storage unit 14 through the main circuit switch unit 18. That is, at the beginning of energy storage, the power supply JP201 cannot directly supply power to the energy storage unit 14, and needs to first charge the energy storage unit 14 through the soft power-on unit 12 and the soft power-on control unit 13; when the voltage of the energy storage unit 14 is greater than the preset voltage threshold, the main circuit switch unit 18 is controlled to conduct, so that the power supply JP201 directly supplies power to the energy storage unit 14.

[0057] The energy storage discharge system provided in this embodiment of the invention charges the energy storage unit through a soft-charge unit when the voltage of the energy storage unit is low, avoiding voltage surges and damage to the energy storage unit, thus achieving a soft-charge function. It collects the voltage stored in the energy storage unit in real time using a data acquisition unit, and charges the energy storage unit when its voltage exceeds a preset voltage threshold (the preset voltage threshold can be determined based on the semiconductor load voltage connected to the output interface and the power supply voltage; specifically, the preset voltage threshold is less than the power supply voltage and greater than the semiconductor load voltage, for example, the semiconductor load voltage is 20V and the power supply voltage is 24V). When the threshold can be set to 22V, the main circuit switch unit is turned on, allowing the power input interface to directly charge the energy storage unit through the main circuit switch unit. During the charging process of the energy storage unit, the main circuit switch unit can only be turned on when the start / stop control unit outputs a low-level signal and the detection unit also outputs a low-level signal. A dual guarantee is set during the main circuit switching, realizing the "AND" control of the main circuit switch unit by the start / stop control unit and the detection unit. This avoids the problem of "false tripping" protection of the power supply caused by the increased switching voltage difference during the main circuit switching process, thus improving the reliability of the energy storage discharge system.

[0058] In one embodiment, see Figure 3 The schematic diagram of the overall unit of the energy storage and discharge system shown in this embodiment further includes: a shutdown discharge unit 20;

[0059] The input terminal of the shutdown discharge unit 20 is connected to the third port of the power-on control unit 13, and the output terminal of the shutdown discharge unit 20 is grounded.

[0060] The start / stop control unit 15 is used to output a high-level signal to the control terminal of the slow power-on control unit 13 when it receives a signal to stop charging, so as to control the second port and the third port of the slow power-on control unit 13 to be turned on, so that the energy storage unit 14 releases electrical energy to the shutdown discharge unit 20 through the slow power-on control unit 13.

[0061] like Figure 2As shown, the shutdown discharge unit 20 includes resistors R209, R210, and R211 connected in series. One end of resistor R209 is connected to the third port of the power-on control unit 13, and one end of resistor R211 is grounded. The current in the circuit is limited by setting resistors R209, R210, and R211. When the external control system board sends a stop signal (i.e., a signal to stop charging), the start-stop control transmission device JP202 in the start-stop control unit 15 outputs a high-level signal to the control terminal of the power-on control unit 13 to control the second port and the third port of the power-on control unit 13 to be connected, so that the energy storage unit 14 releases electrical energy to the shutdown discharge unit 20 through the power-on control unit 13.

[0062] In one embodiment, such as Figure 2 As shown, the detection unit 17 in the energy storage discharge system provided in this embodiment includes: a voltage comparator U201, the inverting input terminal of the voltage comparator U201 is connected to the sampling unit 16, the non-inverting input terminal of the voltage comparator U201 is connected to the start / stop control unit 15, and the output terminal of the voltage comparator U201 is connected to the control terminal of the main circuit switching unit 18.

[0063] like Figure 2 As shown, the detection unit 17 includes: a voltage comparator U201. The inverting input terminal (pin 2) of the voltage comparator U201 is connected to the resistor R208 in the sampling unit 16. The non-inverting input terminal (pin 3) of the voltage comparator U201 is connected to pin 1 of the start-stop control transmission device JP202 in the start-stop control unit 15. The output terminal (pin 1) of the voltage comparator U201 is connected to the control terminal of the main circuit switch unit 18. The voltage comparator U201 outputs a low-level signal when the voltage received at the inverting input terminal is greater than the voltage received at the non-inverting input terminal, and outputs a high-level signal when the voltage received at the inverting input terminal is less than or equal to the voltage received at the non-inverting input terminal. When the voltage comparator U201 outputs a low-level signal, it will turn on the main circuit switch unit 18. The pin 4 of the voltage comparator U201 is connected to an external DC voltage VCC, and the pin 5 of the voltage comparator U201 is grounded. The pins 4 and 5 of the voltage comparator U201 form a circuit to power the voltage comparator U201.

[0064] The detection unit 17 also includes: diode D201, resistor R212, resistor R213, resistor R214, capacitor C202, and voltage regulator chip IC201;

[0065] The anode of diode D201 is connected to pin 1 of the start-stop control transmission device JP202 in the start-stop control unit 15, and the cathode is connected to the non-inverting input terminal of voltage comparator U201 and one end of resistor R212. The other end of resistor R212 is connected to one end of resistor R213, one end of resistor R214, one end of capacitor C202, and pins 1 and 2 of voltage regulator chip IC201. The other ends of resistor R213, capacitor C202, and pin 3 of voltage regulator chip IC201 are all grounded. The other end of resistor R214 is connected to pin 4 of voltage comparator U201. The voltage regulator chip IC201 stabilizes the input voltage of the non-inverting input terminal of voltage comparator U201. Diode D201, resistor R212, resistor R213, resistor R214, and capacitor C202 perform current limiting, filtering, and noise reduction functions.

[0066] The start / stop control unit 15 is used to output a high-level signal to the non-inverting input of the voltage comparator U201 when the energy storage discharge system is discharging.

[0067] Voltage comparator U201 is used to trigger the main circuit switching unit 18 to return to the open state when a high-level signal is received at the non-inverting input terminal;

[0068] When the energy storage discharge system is discharging, the start / stop control unit 15 outputs a high-level signal to the non-inverting input of the voltage comparator U201. At this time, the voltage of the energy storage unit 14 received by the inverting input of the voltage comparator U201 cannot be greater than the voltage of the non-inverting input. Therefore, the output of the voltage comparator U201 will output a high-level signal, causing the main circuit switch unit 18 to return to the open state.

[0069] In one embodiment, such as Figure 3 As shown, the energy storage discharge system provided in this embodiment also includes: a switching unit 21 and a main circuit control unit 22;

[0070] like Figure 2 As shown, the switching unit 21 includes a first switching device and an optocoupler U202; the main circuit control unit 22 includes a first electrical control device; wherein, the first switching device is a PNP transistor Q201, and the first electrical control device is a relay K201.

[0071] The output terminal of voltage comparator U201 is connected to the control terminal of switching unit 21. The first port of switching unit 21 is connected to an external DC power supply. The output terminal of switching unit 21 is connected to the control terminal of main circuit control unit 22.

[0072] like Figure 2As shown, the output terminal of voltage comparator U201 is connected to the control terminal of the first switching device, the first port of the first switching device is connected to an external DC power supply, and the output terminal of the first switching device is connected to the control system of the first electrical control device.

[0073] The control system in the first electrical control device is a coil formed by connecting pins 1 and 2 of relay K201; the control terminal of the first switching device is the base B of PNP transistor Q201, the first port of the first switching device is the emitter E of PNP transistor Q201, and the output terminal of the first switching device is the collector C of PNP transistor Q201.

[0074] The output of voltage comparator U201 is connected to the base of PNP transistor Q201. The emitter of PNP transistor Q201 is connected to an external DC power supply VCC. The collector of PNP transistor Q201 is connected to pin 2 of relay K201. Pin 1 of relay K201 is grounded.

[0075] The switching unit 21 also includes: a Zener diode D202, resistors R215, R216, R224, and capacitor C203. The cathode of the Zener diode D202 is connected to the output terminal of the voltage comparator U201. The anode of the Zener diode D202 is connected to one end of resistor R215 and one end of capacitor C203. The other end of capacitor C203 is connected to the emitter of PNP transistor Q201. The other end of resistor R215 is connected to one end of resistor R216 and the base of PNP transistor Q201. The other end of resistor R216 is connected to the emitter of PNP transistor Q201. One end of resistor R224 is connected to the anode of the light-emitting diode in optocoupler U202, and the other end is connected to the second port of the power-on control unit 13. The Zener diode D202, resistors R215, R216, R224, and capacitor C203 play the roles of voltage regulation, current limiting, and filtering.

[0076] The main circuit control unit 22 also includes a diode D203 and a resistor R217. One end of the resistor R217 is grounded, and the other end is connected to pin 5, pin 1 of the relay K201 and the anode of the diode D203. The cathode of the diode D203 is connected to pin 2 of the relay K201. The diode D203 and the resistor R217 serve to reduce noise and limit current.

[0077] The voltage comparator U201 is used to output a low-level signal to the control terminal of the switching unit 21 when the voltage of the energy storage unit 14 is greater than a preset voltage threshold. The switching unit 21 is used to output a high-level signal to the control terminal of the main circuit control unit 22 when it receives a low-level signal.

[0078] The voltage comparator U201 is used to output a low-level signal to the control terminal of the first switching device when the voltage of the energy storage unit 14 is greater than a preset voltage threshold. The first switching device is used to output a high-level signal to the control system in the first electrical control device when it receives a low-level signal at the control terminal.

[0079] When the voltage of the energy storage unit 14 is greater than the preset voltage threshold, the voltage comparator U201 outputs a low-level signal to the control terminal of the first switching device, proving that the voltage stored in the energy storage unit 14 has reached the preset voltage threshold. Then, the power supply JP201 directly supplies power to the energy storage unit 14 through the main circuit switching unit 18 without causing a voltage change in the energy storage unit 14. When the base of the PNP transistor Q201 receives a low-level signal, the emitter voltage of the PNP transistor Q201 is greater than the base voltage because the emitter is connected to an external DC voltage. Therefore, the PNP transistor Q201 is turned on, and the collector of the PNP transistor Q201 outputs a high-level signal to pin 2 of the relay K201. When the output terminal of the voltage comparator U201 outputs a high-level signal to the base of the PNP transistor Q201, the PNP transistor Q201 is turned off and will not send any level signal to pin 2 of the relay K201.

[0080] The output terminal of the main circuit control unit 22 is connected to the main circuit switching unit 18; the main circuit control unit 22 is used to trigger the main circuit switching unit 18 to conduct when the control terminal receives a high-level signal;

[0081] The first port of the controlled system in the first electrical control device is connected to the negative terminal of the light-emitting diode in the optocoupler U202, and the second port of the controlled system in the first electrical control device is grounded; the positive terminal of the light-emitting diode in the optocoupler U202 is connected to the second port of the power-on control unit 13, the emitter of the phototransistor in the optocoupler U202 is connected to an external DC power supply, and the collector of the phototransistor in the optocoupler U202 is connected to the control terminal of the main circuit switching unit 18.

[0082] The first port of the controlled system in the first electrical control device (i.e., pin 4 of relay K201) is connected to the negative terminal of the light-emitting diode in optocoupler U202 (i.e., pin 2 of optocoupler), and a resistor R225 is provided on the connection line. The second port of the controlled system in the first electrical control device (i.e., pin 5 of relay K201) is grounded.

[0083] The positive terminal of the light-emitting diode in optocoupler U202 (i.e., pin 1 of optocoupler U202) is connected to the second port of the power-on control unit 13. The emitter of the phototransistor in optocoupler U202 (i.e., pin 4 of optocoupler U202) is connected to an external DC power supply VCC. The collector of the phototransistor in optocoupler U202 (i.e., pin 3 of optocoupler U202) is connected to the control terminal of the main circuit switching unit 18.

[0084] The first electrical control device is used to control the first port and the second port of the controlled system to conduct when the control system receives a high-level signal, so as to turn on the light-emitting diode of the optocoupler U202;

[0085] When no current flows through the control system coil in relay K201, pins 3 and 5 are connected. However, when the control system of the first electrical control device receives a high-level signal, current flows through the coil in relay K201, causing pin 4 of relay K201 to engage with pin 5, thus connecting the first port and the second port of the first electrical control device, and enabling the light-emitting diode of optocoupler U202 to conduct.

[0086] The optocoupler U202 is used to output a high-level signal to the control terminal of the main circuit switching unit 18 through the collector of the phototransistor when the light-emitting diode is turned on, so as to trigger the main circuit switching unit 18 to turn on.

[0087] When the light-emitting diode of optocoupler U202 is turned on, the light-emitting diode will generate light energy. When the light energy shines on the phototransistor of optocoupler U202, the phototransistor will turn on, and the collector of the phototransistor will transmit a high-level signal to the main circuit switching unit 18, so that the main circuit switching unit 18 is turned on.

[0088] In one embodiment, such as Figure 3 The energy storage and discharge system provided in this embodiment also includes: a status output unit 23;

[0089] The input terminal of the status output unit 23 is connected to the output terminal of the main circuit control unit 22;

[0090] like Figure 2As shown, the input terminal of the status output unit 23 is connected to pin 4 of the relay K201 in the main circuit control unit 22. Specifically, the status output unit 23 includes: a status output interface 19, a resistor R218, a resistor R219, and an NPN transistor Q202. The status output interface 19 can transmit the energy storage status of the energy storage unit 14 to the external control system board by connecting to the status transmission device JP203. Pin 1 of the status transmission device JP203 is connected to the collector C of the NPN transistor Q202. The emitter E of the NPN transistor Q202 is grounded. The base B of the NPN transistor Q202 is connected to one end of the resistor R218 and one end of the resistor R219. The other end of the resistor R218 is connected to the emitter of the NPN transistor Q202. The other end of the resistor R218 is connected to the collector of the phototransistor in the optocoupler U202. The cathode of the light-emitting diode in the optocoupler U202 is connected to pin 4 of the relay K201 in the main circuit control unit 22.

[0091] The status output unit 23 is used to output a signal that the energy storage unit 14 has completed energy storage when the control terminal in the main circuit control unit 22 receives a high-level signal;

[0092] When the control terminal in the main circuit control unit 22 (i.e., the control system of the first electrical control device (relay K201)) receives a high-level signal, current flows through the coil in the control system of relay K201, and pins 4 and 5 of relay K201 are connected. Current flows through the light-emitting diode in optocoupler U202, causing the phototransistor in optocoupler U202 to conduct. When the collector of the phototransistor outputs a high-level signal, it proves that the energy storage unit 14 has met the energy storage requirements. The status output unit 23 will output a signal that the energy storage unit 14 has completed energy storage to the external control system board.

[0093] In one embodiment, the power-on control unit 13 in the energy storage discharge system includes: a second switching device and a second electrical control device;

[0094] like Figure 2 As shown, the second switching device is a PNP transistor Q203, and the second electrical control device is a relay K202.

[0095] The control terminal of the second switching device is connected to the start / stop control unit 15, the first port of the second switching device is connected to an external DC power supply, and the output terminal of the second switching device is connected to the control system of the second electrical control device.

[0096] The control system in the second electrical control device is a coil formed by connecting pins 1 and 2 of relay K202;

[0097] The control terminal of the second switching device (i.e., the base B of the PNP transistor Q203) is connected to pin 1 of the start-stop control transmission device JP202 in the start-stop control unit 15. The first port of the second switching device (i.e., the emitter E of the PNP transistor Q203) is connected to an external DC power supply. The output terminal of the second switching device (i.e., the collector C of the PNP transistor Q203) is connected to the control system of the second electrical control device (i.e., pin 1 of the relay K202). Pin 2 of the relay K202 is grounded.

[0098] The power-on control unit 13 also includes: a Zener diode D204, a diode 205, a resistor R220, a resistor R221, a resistor R222, and a capacitor C204. The anode of the Zener diode D204 is connected to pin 1 of the start-stop control transmission device JP202 in the start-stop control unit 15. The cathode of the Zener diode D204 is connected to one end of the resistor R220 and one end of the capacitor C204. The other end of the capacitor C204 is connected to the emitter of the PNP transistor Q203. The other end of the resistor R220 is connected to the resistor R222. One end of resistor R221 is connected to the base of PNP transistor Q203, and the other end of resistor R221 is connected to the emitter of PNP transistor Q203. One end of resistor R222 is grounded, and the other end is connected to pin 2 of relay K202 and the anode of diode 205. The cathode of diode 205 is connected to pin 1 of relay K202. Zener diode D204, diode 205, resistors R220, R221, R222 and capacitor C204 play the roles of voltage regulation, current limiting, filtering and noise reduction.

[0099] The second switching device is used to output a high-level signal to the control system of the second electrical control device when a low-level signal is received at the control terminal;

[0100] When the base of PNP transistor Q203 receives a low-level signal, the emitter voltage of PNP transistor Q203 is greater than the base voltage because the emitter is connected to an external DC voltage. Therefore, PNP transistor Q203 is turned on, and the collector of PNP transistor Q203 outputs a high-level signal to pin 1 of relay K202. When the start-stop control transmission device JP202 in the start-stop control unit 15 outputs a high-level signal to the base of PNP transistor Q203, PNP transistor Q203 is turned off, and PNP transistor Q203 will not send any level signal to pin 1 of relay K202.

[0101] The first port of the controlled system of the second electrical controller is connected to the output terminal of the soft power-on unit 12, and the second port of the controlled system of the second electrical controller is connected to the port of the energy storage unit 14.

[0102] The first port of the controlled system in the second electrical controller (i.e., pin 4 of relay K202) is connected to the output terminal of the soft power-on unit 12, and the second port of the controlled system in the second electrical controller (i.e., pin 5 of relay K202) is connected to the port of the energy storage unit 14.

[0103] The second electrical control device is used to control the first port and the second port of the controlled system to be turned on when the control system receives a high-level signal.

[0104] When no current flows through the control system (i.e., the coil in relay K202), pins 3 and 5 of relay K202 are engaged. However, when the control system of the second electrical controller receives a high-level signal, current flows through the coil in relay K202, causing pin 4 of relay K202 to engage with pin 5, thus connecting the first and second ports of the second electrical controller.

[0105] In one embodiment, the main circuit switching unit 18 in the energy storage discharge system provided by this embodiment includes: a third switching device;

[0106] like Figure 2 As shown, the third switching device is an N-type field-effect transistor M201.

[0107] The control terminal of the third switching device is connected to the output terminal of the main circuit control unit 22, the input terminal of the third switching device is connected to the power supply input interface 11, and the output terminal of the third switching device is connected to the port of the energy storage unit 14.

[0108] like Figure 2As shown, the main circuit switching unit 18 also includes: an optocoupler U203, a resistor R223, and a capacitor C205. The cathode of the light-emitting diode in the optocoupler U203 (i.e., pin 2 of the optocoupler U203) is grounded, the anode of the light-emitting diode in the optocoupler U203 (i.e., pin 1 of the optocoupler U203) is connected to one end of the resistor R223, the other end of the resistor R223 is connected to pin 3 of the optocoupler U202 and one end of the capacitor C205, the other end of the capacitor C205 is connected to pin 2 of the optocoupler U203, and the emitter of the phototransistor in the optocoupler U203 (i.e., the emitter of the phototransistor U203) is grounded. Pin 4 of 203 is connected to the gate of N-type field-effect transistor M201. The collector of the phototransistor in optocoupler U203 (i.e., pin 3 of optocoupler U203) is connected to the port of energy storage unit 14 and the drain of N-type field-effect transistor M201. The source of N-type field-effect transistor M201 is connected to power supply input interface 11. When current flows through the light-emitting diode of optocoupler U203, a light source is generated. When the light source shines on the phototransistor of optocoupler U203, the phototransistor will conduct, making the source and drain of N-type field-effect transistor M201 conduct, so that power supply input interface 11 can directly supply power to energy storage unit 14.

[0109] In one embodiment, such as Figure 3 As shown, the energy storage discharge system provided in this embodiment also includes: a power-off retention unit 24;

[0110] The power-off retention unit 24 is connected to the power input interface 11 and the port of the energy storage unit 14;

[0111] like Figure 2 As shown, the power-down retention unit 24 also includes: diode D206, diode D207, capacitor C206 and capacitor C207. The anode of diode D206 is connected to pin 1 of the power supply JP201, and the cathode is connected to one end of capacitor C206, one end of capacitor C207 and the cathode of diode D207. The other end of capacitor C206 and the other end of capacitor C207 are both grounded. The anode of diode D207 is connected to the port of energy storage unit 14.

[0112] The power-down retention unit 24 is used to store voltage when the energy storage unit 14 is charging and to provide delayed power supply when the energy storage unit 14 releases electrical energy.

[0113] The capacitor C206 in the power-down retention unit 24 is a polarized capacitor. When the energy storage unit 14 is charging, it stores the voltage provided by the power supply. When the energy storage unit 14 releases electrical energy, the electrical energy stored in the power-down retention unit 24 can still supply power to the external control system board, thus preventing damage to the external control system board.

[0114] In one embodiment, such asFigure 3 As shown, the energy storage discharge system provided in this embodiment also includes: an auxiliary power output interface 25;

[0115] One end of the auxiliary power output interface 25 is connected to the power-off retention unit 24; the other end of the auxiliary power output interface 25 is used to connect an external auxiliary power supply.

[0116] The power-loss retention unit is also used to provide delayed power to the external auxiliary power supply JP204 through the auxiliary power output interface when the energy storage unit releases electrical energy;

[0117] like Figure 2 As shown, the auxiliary power output interface 25 can be connected to an external auxiliary power supply JP204 to power the external control system board. Pin 1 of the auxiliary power supply JP204 is connected to one end of the fuse F201, and the other end of the fuse F201 is connected to the anode of the capacitor C206 in the power-down retention unit 24. Pin 2 of the auxiliary power supply JP204 is grounded. When the energy storage unit 14 releases electrical energy, the capacitor C206 in the power-down retention unit 24 provides delayed power to the auxiliary power supply JP204 through the auxiliary power output interface 25. The auxiliary power supply JP204 powers the external control system board, ensuring that the external control system board can still be used normally.

[0118] In one embodiment, such as Figure 3 As shown, the energy storage and discharge system provided in this embodiment also includes: a filter unit 26;

[0119] The input terminal of the filter unit 26 is connected to the power supply input interface 11, and the output terminal of the filter unit 26 is connected to the input terminal of the main circuit switch unit 18.

[0120] like Figure 2 As shown, the filter unit 26 includes a capacitor C229. One end of the capacitor C229 is connected to pin 1 of the power supply JP201, and the other end is connected to pin 2 of the power supply JP201, thereby filtering the current in the main circuit.

[0121] In embodiments of the present invention, such as Figure 3 As shown, the energy storage discharge system also includes: a protection unit 27;

[0122] like Figure 2 As shown, the protection unit 27 includes a fuse F202 and a varistor R226. The fuse F202 and the varistor R226 are connected in series and then connected in parallel with the capacitor C229 in the filter unit 26. The fuse F202 is used to blow when the current in the power supply line is too large, and the varistor is used to clamp the voltage when the voltage in the power supply line is too large. The fuse F202 and the varistor R226 together provide voltage and current protection for the energy storage circuit.

[0123] In embodiments of the present invention, such as Figure 2As shown, the energy storage unit can be composed of multiple polarized capacitors. The energy storage unit 14 composed of these capacitors can store a charge of 81.6 Mf. The energy storage unit includes: capacitors C208, C209, C210, C211, C212, C213, C214, C215, C216, C217, C218, and C219. The anodes of these capacitors are connected in parallel as the ports of the energy storage unit 14. The cathodes of capacitors C210, C211, C212, C213, C214, C215, C216, C217, C218, and C219 are connected in parallel and grounded. The energy storage unit 14 has multiple output interfaces 19 connected to loads JP205, JP206, and JP207. Pin 1 of load JP205 is connected to the anode of capacitor C208, and pin 2 of load JP205 is grounded, connected via capacitor C22. 0 is connected to the anode of capacitor C209; pin 1 of load JP206 is connected to the anode of capacitor C212, pin 2 of load JP206 is grounded, and connected to the anode of capacitor C213 through capacitor C221; pin 1 of load JP207 is connected to the anode of capacitor C216, pin 2 of load JP207 is grounded, and connected to the anode of capacitor C217 through capacitor C222; the anode of capacitor C210 is connected to capacitor C223 and then grounded; the anode of capacitor C211 is connected to capacitor C... 224 is grounded after connection; the anode of capacitor C214 is grounded after connection with capacitor C225; the anode of capacitor C215 is grounded after connection with capacitor C226; the anode of capacitor C218 is grounded after connection with capacitor C227; the anode of capacitor C219 is grounded after connection with capacitor C228. Among them, capacitors C220, C221, C222, C223, C224, C225, C226, C227, and C228 serve as filters.

[0124] The present invention provides a specific embodiment of energy storage and discharge using the above-described energy storage and discharge system as follows:

[0125] When the energy storage and discharge system needs to store energy, the start / stop control unit 15 receives the start-up charging signal from the external control system board and outputs a low-level signal to the non-inverting input terminals of the power-on control unit 13 and the detection unit 17. A 24V DC power supply is connected to the power input interface 11. At this time, the PNP transistor Q203 in the power-on control unit 13 is turned on, current flows through the coil of the relay K202, and pins 4 and 5 of the relay K202 are connected. The power supply JP201 supplies power to the energy storage unit 14 through the power-on unit 12, achieving the purpose of power-on. When the voltage received at the inverting input terminal of the detection unit 17 is greater than the low-level signal output by the start / stop control unit 15 (i.e., when the voltage of the energy storage unit 14 reaches 22V), it indicates that the energy storage unit 14 has reached the required storage voltage. At this time, the energy storage unit 14... The power supply to the load is 20V. The detection unit 17 outputs a low-level signal to the switching unit 21. At this time, the PNP transistor Q201 in the switching unit 21 is turned on, so that the coil in the relay K201 has current flowing through it. The pins 4 and 5 of the relay K201 are turned on, the light-emitting diode of the optocoupler U202 is turned on, and the phototransistor is turned on. At this time, the source and drain of the N-type field-effect transistor M201 in the main circuit switching unit 18 are also turned on. The power supply JP201 can directly supply power to the energy storage unit 14. At the same time, the NPN transistor Q202 in the status output unit 23 will output the energy storage completion signal to the external control system board. During the energy storage process, the power supply is changed from the original traditional multi-channel power supply to single-channel power supply. The number and size of the power supply are reduced, the equipment wiring is simpler, and the interference sources are reduced accordingly.

[0126] When the energy storage discharge system needs to discharge, the start / stop control unit 15 receives a stop charging signal from the external control system board and outputs a high-level signal to the non-inverting input terminals of the soft-on control unit 13 and the detection unit 17. At this time, the PNP transistor Q203 in the soft-on control unit 13 is cut off, no current flows through the coil of the relay K202, and pins 3 and 5 of the relay K202 are connected. The voltage at the inverting input terminal of the detection unit 17 is less than the voltage at the non-inverting input terminal of the detection unit 17, and the detection unit 17 outputs a high-level signal to the PNP transistor Q201 in the switching unit 21. At this time, the PNP transistor Q201 is cut off, no current flows through the coil of the relay K201, and pins 3 and 5 of the relay K201 are connected. The light-emitting diode of the optocoupler U202 is cut off, and the discharge unit 20 is turned off. The "OR" control between the power-on control unit 13 and the main circuit control unit 22 allows the power supply unit to directly release energy through the shutdown discharge unit 20 during the discharge process, greatly shortening the discharge time and enhancing the safety and reliability of the energy storage discharge system after power failure. When the voltage in the energy storage unit 14 drops to 20V, the load is shut off. At this time, the power-off retention unit 24 supplies power to the auxiliary power supply through the auxiliary power output interface 25 to maintain the delayed power supply of the external control system board and keep it in normal condition. When the voltage in the energy storage unit 14 drops to 9V, if the external control system board sends a signal to control the power failure, the power supply of the external control system board will not be affected by the presence of the power-off retention unit 24. If the power supply JP201 is cut off, the load has already been shut off, and the entire energy storage discharge system and the external control system board have been safely shut down.

[0127] In this embodiment of the invention, the slow power-on control unit 13 in the energy storage discharge system can also be replaced by using multiplex control to implement combinational logic or timing circuit control of the slow power-on control unit such as "AND, OR, NOR".

[0128] The provided "OR" control of the shutdown discharge unit by the output signal of the power-on control unit and the output signal of the main circuit control unit 22 can also be replaced by using multiplex control to realize combination logic or timing circuit control of the shutdown discharge unit such as "AND, NAND, OR".

[0129] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or apparatus referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0130] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "installation" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two devices. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An energy storage and discharge system, characterized by, The application relates to a power supply input interface, a slow power-on unit, a slow power-on control unit, an energy storage unit, a start-stop control unit, a sampling unit, a detection unit, a main loop switch unit and an output interface. The power supply input interface is connected with the input end of the main loop switch unit, the output end of the main loop switch unit is connected with the port of the energy storage unit, the output end of the energy storage unit is connected with the output interface, and the main loop switch unit is in a disconnected state. The power supply input interface is connected with the input end of the slow power-on unit, the output end of the slow power-on unit is connected with the first port of the slow power-on control unit, the second port of the slow power-on control unit is connected with the port of the energy storage unit, and the slow power-on unit is used for current limiting. The start-stop control unit is connected with the control end of the slow power-on control unit, the start-stop control unit is used for outputting a low-level signal to the control end of the slow power-on control unit when a start charging signal is received, so as to control the first port and the second port of the slow power-on control unit to be conductive. The sampling unit is connected with the input end of the detection unit, and the output end of the detection unit is connected with the control end of the main loop switch unit. The sampling unit is used for detecting the voltage of the energy storage unit, and the detection unit is used for triggering the main loop switch unit to be conductive when the voltage of the energy storage unit is greater than a preset voltage threshold, so that the power supply input interface charges the energy storage unit through the main loop switch unit. Further comprising:

2. The stored-energy discharge system of claim 1, wherein a shutdown discharge unit; the input end of the shutdown discharge unit is connected with the third port of the slow power-on control unit, and the output end of the shutdown discharge unit is grounded; the start-stop control unit is used for outputting a high-level signal to the control end of the slow power-on control unit when a stop charging signal is received, so as to control the second port and the third port of the slow power-on control unit to be conductive, and make the energy storage unit release electric energy to the shutdown discharge unit through the slow power-on control unit. The detection unit comprises a voltage comparator, the inverting input end of the voltage comparator is connected with the sampling unit, the non-inverting input end of the voltage comparator is connected with the start-stop control unit, and the output end of the voltage comparator is connected with the control end of the main loop switch unit; 3. The energy storage and discharge system of claim 2, wherein, the start-stop control unit is used for outputting a high-level signal to the non-inverting input end of the voltage comparator when the energy storage discharge system discharges; the voltage comparator is used for triggering the main loop switch unit to restore the disconnected state when the non-inverting input end receives the high-level signal. Further comprising:

4. The stored-energy discharge system of claim 3, wherein a switch unit and a main loop control unit; the output end of the voltage comparator is connected with the control end of the switch unit, the first port of the switch unit is externally connected with a direct-current power supply, and the output end of the switch unit is connected with the control end of the main loop control unit; the voltage comparator is used for outputting a low-level signal to the control end of the switch unit when the voltage of the energy storage unit is greater than a preset voltage threshold, and the switch unit is used for outputting a high-level signal to the control end of the main loop control unit when the control end receives the low-level signal. ​ The output end of the main loop control unit is connected with the main loop switch unit; the main loop control unit is used for triggering the main loop switch unit to conduct when the high level signal is received at the control end.

5. The energy storage and discharge system of claim 4, wherein, Further comprising: a state output unit; The input end of the state output unit is connected with the output end of the main loop control unit; The state output unit is used for outputting the signal of the energy storage unit completing energy storage when the high level signal is received at the control end of the main loop control unit.

6. The energy storage and discharge system of claim 1, wherein, The slow power-on control unit comprises: a second switch device and a second electric control device; The control end of the second switch device is connected with the start-stop control unit, the first port of the second switch device is externally connected with a direct current power supply, and the output end of the second switch device is connected with the control system of the second electric control device; The second switch device is used for outputting the high level signal to the control system of the second electric control device when the low level signal is received at the control end; The first port of the controlled system of the second electric control device is connected with the output end of the slow power-on unit, and the second port of the controlled system of the second electric control device is connected with the port of the energy storage unit; The second electric control device is used for controlling the first port and the second port of the controlled system to conduct when the high level signal is received at the control system.

7. The stored-energy discharge system of claim 4, wherein, The main loop switch unit comprises: a third switch device; The control end of the third switch device is connected with the output end of the main loop control unit, the input end of the third switch device is connected with the power supply input interface, and the output end of the third switch device is connected with the port of the energy storage unit.

8. The stored-energy discharge system of claim 1, wherein Further comprising: A power failure holding unit; The power failure holding unit is connected with the power supply input interface and the port of the energy storage unit; The power failure holding unit is used for storing voltage when the energy storage unit is charged.

9. The stored-energy discharge system of claim 8, wherein, Further comprising: An auxiliary power supply output interface; One end of the auxiliary power supply output interface is connected with the power failure holding unit, and the other end of the auxiliary power supply output interface is used for externally connecting an auxiliary power supply; The power failure holding unit is further used for providing the externally connected auxiliary power supply with delay power supply through the auxiliary power supply output interface when the energy storage unit releases electric energy.

10. The stored-energy discharge system of claim 1, wherein, Further comprising: A filter unit; The input end of the filter unit is connected with the power supply input interface, and the output end of the filter unit is connected with the input end of the main loop switch unit.

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