A power-on circuit for a home energy storage system based on capacitor discharge

Abstract

This utility model discloses a power-on circuit for a household energy storage system based on capacitor discharge. The power-on circuit includes a switch button state unit, a capacitor sustaining unit, a switch circuit unit, and a discharge circuit unit. The two ends of the discharge circuit unit are connected to the positive and negative terminals of the household energy storage system. The switch button state unit and the capacitor sustaining unit are respectively connected to the discharge circuit unit, and the connection node of the switch button state unit, the capacitor sustaining unit, and the discharge circuit unit is the discharge node A. The two ends of the switch circuit unit are connected to the discharge circuit unit and the power-on signal input port POW_CTRL, and the control terminal of the switch circuit unit is connected to the capacitor sustaining unit. The capacitor sustaining unit discharges according to the closed state of the switch button state unit and controls the switch circuit unit to conduct, and the power-on signal is input through the power-on signal port POW_CTRL.

Description

Technical Field

[0001] This application belongs to the technical field of home energy storage systems, specifically referring to a power-on circuit for a home energy storage system based on capacitor discharge. Background Technology

[0002] In the field of home energy storage system technology, traditional home energy storage systems have a relatively simple power-on design, generally using a button to turn on the system. However, the biggest problem with this method is that the button must be pressed continuously during power-on; if the hand shakes or the button is released before the power-on process is complete, the system may fail to power on. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this application provides a power-on circuit for a household energy storage system based on capacitor discharge, which can be powered on by simply pressing a button.

[0004] This utility model provides a power-on circuit for a household energy storage system based on capacitor discharge. The power-on circuit includes a switch button state unit, a capacitor maintenance unit, a switch circuit unit, and a discharge circuit unit.

[0005] The two ends of the discharge circuit unit are connected to the positive and negative terminals of the household energy storage system;

[0006] The switch button state unit and the capacitor sustaining unit are respectively connected to the discharge circuit unit, and the connection node of the switch button state unit, the capacitor sustaining unit and the discharge circuit unit is the discharge node A;

[0007] The two ends of the switching circuit unit are connected to the discharge circuit unit and the power-on signal input port POW_CTRL, and the control end of the switching circuit unit is connected to the capacitor sustaining unit.

[0008] The capacitor sustaining unit discharges according to the closed state of the switch button state unit and controls the off circuit unit to conduct, so that the power-on signal is input through the power-on signal input port POW_CTRL.

[0009] Furthermore, according to the power-on circuit of the household energy storage system based on capacitor discharge provided in this application, the discharge circuit unit includes resistor R22 and resistor R31;

[0010] One end of resistor R22 is connected to the PIN terminal, the other end of resistor R22 is connected to resistor R31, and the other end of resistor R31 is connected to the GND terminal.

[0011] The PIN terminal is the positive terminal BAT+ of the home energy storage system, the GND terminal is the negative terminal BAT- of the home energy storage system, and the connection node of the resistors R22 and R31 is the discharge node A.

[0012] Furthermore, according to the power-on circuit of the household energy storage system based on capacitor discharge provided in this application, the switch button state unit includes a switch button K1 and a diode D73; one end of the switch button K1 is connected to the GND terminal, and the other end is connected to the negative terminal of the diode D73, and the positive terminal of the diode D73 is connected to the discharge node A.

[0013] Furthermore, according to the power-on circuit of the household energy storage system based on capacitor discharge provided in this application, the capacitor maintenance unit includes a capacitor C22; one end of the capacitor C22 is connected to the discharge node A, and the other end of the capacitor C22 is connected to the GND terminal.

[0014] Furthermore, according to the power-on circuit of the household energy storage system based on capacitor discharge provided in this application, the capacitor maintenance unit further includes a diode D75; the positive terminal of the diode D75 is connected to the discharge node A, and the negative terminal of the diode D75 is connected to one end of the capacitor C22, and charges the capacitor C22.

[0015] Furthermore, according to the power-on circuit of the home energy storage system based on capacitor discharge provided in this application, the switching circuit unit includes a transistor Q5; the base of the transistor Q5 is connected to one end of the capacitor C22, the capacitor C22 discharges to the base of the transistor Q5, the emitter of the transistor Q5 is connected to the discharge node A, and the collector of the transistor Q5 is connected to the power-on signal input port POW_CTRL.

[0016] Furthermore, according to the power-on circuit of the home energy storage system based on capacitor discharge provided in this application, the transistor Q5 is an NPN transistor.

[0017] Furthermore, according to the power-on circuit of the household energy storage system based on capacitor discharge provided in this application, the switching circuit unit further includes a resistor R23, one end of which is connected to the base of the transistor Q5, and the other end of which is connected to the discharge node A and one end of the capacitor C22.

[0018] Furthermore, according to the power-on circuit of the household energy storage system based on capacitor discharge provided in this application, the switching circuit unit further includes a diode D76, the positive terminal of the diode D76 is connected to the emitter of the transistor Q5, and the negative terminal of the diode D76 is connected to the discharge node A.

[0019] Furthermore, according to the power-on circuit of the home energy storage system based on capacitor discharge provided in this application, the switching circuit unit further includes a resistor R26 and a diode D74; one end of the resistor R26 is connected to the collector of the transistor Q5, the other end of the resistor R26 is connected to the negative terminal of the diode D74, and the positive terminal of the diode D74 is connected to the power-on signal input port POW_CTRL.

[0020] The beneficial effects of this utility model are as follows: The household energy storage system provided in this application uses a capacitor discharge-based power-on circuit. First, the capacitor sustaining unit is charged. Then, the capacitor sustaining unit discharges according to the closed state of the switch button state unit, simultaneously controlling the switch circuit unit to conduct and input a power-on signal. With this capacitor discharge-based power-on circuit, the household energy storage system provided in this application only requires a brief press of the button to power on, solving the problem of traditional power-on circuits requiring continuous pressing of the power button, thus improving the safety and convenience of the household energy storage system. Attached Figure Description

[0021] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the circuit structure of the power-on circuit based on capacitor discharge for the home energy storage system provided in this embodiment. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0026] The embodiments of this application will now be further described in conjunction with the accompanying drawings and specific implementation details.

[0027] This application provides a power-on circuit for a home energy storage system based on capacitor discharge. The power-on circuit includes a switch button state unit, a capacitor sustaining unit, a switch circuit unit, and a discharge circuit unit. The discharge circuit unit is connected to the positive and negative terminals of the home energy storage system. The switch button state unit and the capacitor sustaining unit are connected to the discharge circuit unit, and the connection node of the switch button state unit, the capacitor sustaining unit, and the discharge circuit unit is discharge node A. The switch button state unit is used to enable and disable the system and maintain the enabled state. When the switch button state unit is open, the capacitor sustaining unit charges the capacitor. When the switch button state unit is closed, the capacitor sustaining unit begins to discharge. The two ends of the switch circuit unit are connected to the discharge circuit unit and the power-on signal input port POW_CTRL. The control terminal of the switch circuit unit is connected to the capacitor sustaining unit. The capacitor sustaining unit discharges according to the closed state of the switch button state unit and controls the switch circuit unit to conduct, allowing the power-on signal to be input through the power-on signal input port POW_CTRL.

[0028] Figure 1 This is a schematic diagram of the circuit structure of the power-on circuit based on capacitor discharge for the home energy storage system provided in this embodiment.

[0029] like Figure 1 As shown, the discharge circuit unit includes resistor R22 and resistor R31; one end of resistor R22 is connected to the PIN terminal, the other end of resistor R22 is connected to resistor R31, and the other end of resistor R31 is connected to the GND terminal; the PIN terminal is the positive terminal BAT+ of the home energy storage system, the GND terminal is the negative terminal BAT- of the home energy storage system, and the connection node of resistor R22 and resistor R31 is the discharge node A.

[0030] The resistance values ​​of resistors R22 and R31 can be adjusted according to the actual circuit requirements, and no specific limitation is made here.

[0031] The switch button state unit includes a switch button K1 and a diode D73; one end of the switch button K1 is connected to the GND terminal, and the other end is connected to the negative terminal of the diode D73, and the positive terminal of the diode D73 is connected to the discharge node A.

[0032] The capacitor sustaining unit includes a capacitor C22; one end of the capacitor C22 is connected to the discharge node A, and the other end of the capacitor C22 is connected to the GND terminal. The capacitance of the capacitor C22 can be set according to the needs of the actual circuit, and no specific limitation is made here.

[0033] like Figure 1 As shown, the capacitor sustaining unit also includes a diode D75; the positive terminal of the diode D75 is connected to the discharge node A, and the negative terminal of the diode D75 is connected to one end of the capacitor C22, thus charging the capacitor C22.

[0034] The switching circuit unit includes a transistor Q5; the base of the transistor Q5 is connected to one end of the capacitor C22, the capacitor C22 discharges to the base of the transistor Q5, the emitter of the transistor Q5 is connected to the discharge node A, and the collector of the transistor Q5 is connected to the power-on signal input port POW_CTRL.

[0035] In this embodiment, the power-on signal is input through the power-on signal input port POW_CTRL.

[0036] In this embodiment, an NPN transistor Q5 is used as an example. The transistor Q5 can also be other types of transistors; the conduction direction of other circuits can be adjusted based on the transistor Q5.

[0037] Specifically, such as Figure 1 As shown, the switching circuit unit further includes a resistor R23, one end of which is connected to the base of the transistor Q5, and the other end of which is connected to the discharge node A and one end of the capacitor C22. The switching circuit unit also includes a diode D76, the anode of which is connected to the emitter of the transistor Q5, and the cathode of which is connected to the discharge node A. The switching circuit unit also includes a resistor R26 and a diode D74; one end of the resistor R26 is connected to the collector of the transistor Q5, and the other end of which is connected to the cathode of the diode D74. The anode of the diode D74 is connected to the power-on signal input port POW_CTRL.

[0038] like Figure 1 As shown, the working principle of the power-on circuit based on capacitor discharge of the home energy storage system provided in this embodiment is as follows:

[0039] When the switch button K1 in the switch button state unit is in the off state, the battery charges the capacitor C22 through the resistor R22 in the discharge circuit unit and the diode D75 in the capacitor sustaining unit. Since the base and emitter of the transistor Q5 are both connected to the discharge node A, the voltage difference between the base and emitter of the transistor Q5 is small at this time, and the transistor Q5 will not be turned on. Therefore, the power-on signal input port POWER_CTRL will not be turned on.

[0040] When the switch button K1 is pressed, it enters the closed state. At this time, the voltage at discharge node A is clamped to the conduction voltage of diode D73, and simultaneously, capacitor C22 begins to discharge to the base of transistor Q5. The voltage difference between the base and emitter of transistor Q5 increases, causing the emitter of transistor Q5 to conduct. Transistor Q5 is then in saturation, and the power-on signal input port POWER_CTRL is activated, successfully powering on the home energy storage system.

[0041] In one specific embodiment, the voltage range between the positive terminal BAT+ and the negative terminal BAT- of the battery in the home energy storage system is 42V-54V. After voltage division by resistor R22, a basically stable voltage is obtained at discharge node A, typically 21V-27V, depending on the voltage division resistance values ​​of resistors R22 and R31. The voltage at discharge node A charges capacitor C22 to a state of 21V-27V. At this time, since the voltage between the emitter and base of NPN transistor Q5 is less than 0.7V, transistor Q5 will not conduct, and the power-on signal input port POWER_CTRL will not conduct.

[0042] When the switch button K1 is manually pressed, the voltage at discharge node A is clamped to 0.7V by diode D73. At this time, capacitor C22 (voltage is 21V-27V) discharges to the base of transistor Q5. Simultaneously, since the emitter voltage of transistor Q5 is about 1.4V, the emitter of transistor Q5 is turned on, and transistor Q5 is in saturation. This pulls the power-on signal input port POWER_CTRL down to about 0.9V, and the entire home energy storage system is successfully powered on.

[0043] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0044] The above provides a detailed description of the power-on circuit based on capacitor discharge for a household energy storage system provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. 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 of the technical features. 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 this application.

Claims

1. A start-up circuit for a household energy storage system based on capacitor discharge, characterized in that, The power-on circuit includes a switch button status unit, a capacitor sustaining unit, a switch circuit unit, and a discharge circuit unit. The two ends of the discharge circuit unit are connected to the positive and negative terminals of the household energy storage system; The switch button state unit and the capacitor sustaining unit are respectively connected to the discharge circuit unit, and the connection node of the switch button state unit, the capacitor sustaining unit and the discharge circuit unit is the discharge node A; The two ends of the switching circuit unit are connected to the discharge circuit unit and the power-on signal input port POW_CTRL, and the control end of the switching circuit unit is connected to the capacitor sustaining unit. The capacitor sustaining unit discharges according to the closed state of the switch button state unit and controls the switch circuit unit to conduct, so that the power-on signal is input through the power-on signal input port POW_CTRL.

2. The home electricity storage system based on the starting circuit of the discharge of the capacitor according to claim 1, characterized in that, The discharge circuit unit includes resistor R22 and resistor R31; One end of resistor R22 is connected to the PIN terminal, the other end of resistor R22 is connected to resistor R31, and the other end of resistor R31 is connected to the GND terminal. The PIN terminal is the positive terminal BAT+ of the home energy storage system, the GND terminal is the negative terminal BAT- of the home energy storage system, and the connection node of the resistors R22 and R31 is the discharge node A.

3. The home electricity storage system based on the starting circuit of the discharge of the capacitor according to claim 2, characterized in that, The switch button state unit includes a switch button K1 and a diode D73; one end of the switch button K1 is connected to the GND terminal, and the other end is connected to the negative terminal of the diode D73, and the positive terminal of the diode D73 is connected to the discharge node A.

4. The home electricity storage system start-up circuit based on capacitor discharge according to claim 3, characterized in that, The capacitor sustaining unit includes a capacitor C22; one end of the capacitor C22 is connected to the discharge node A, and the other end of the capacitor C22 is connected to the GND terminal.

5. The home electricity storage system start-up circuit based on capacitor discharge according to claim 4, characterized in that, The capacitor sustaining unit also includes a diode D75; the positive terminal of the diode D75 is connected to the discharge node A, and the negative terminal of the diode D75 is connected to one end of the capacitor C22, thus charging the capacitor C22.

6. The home electricity storage system start-up circuit based on capacitor discharge according to claim 4, wherein, The switching circuit unit includes a transistor Q5; the base of the transistor Q5 is connected to one end of the capacitor C22, the capacitor C22 discharges to the base of the transistor Q5, the emitter of the transistor Q5 is connected to the discharge node A, and the collector of the transistor Q5 is connected to the power-on signal input port POW_CTRL.

7. The home electricity storage system based on the starting circuit of the discharge of the capacitor according to claim 6, characterized in that, The transistor Q5 is an NPN transistor.

8. The home electricity storage system based on the starting circuit of the discharge of the capacitor according to claim 6, characterized in that, The switching circuit unit also includes a resistor R23, one end of which is connected to the base of the transistor Q5, and the other end of which is connected to the discharge node A and one end of the capacitor C22.

9. The home electricity storage system start-up circuit based on capacitor discharge according to claim 6, wherein, The switching circuit unit also includes a diode D76, the positive terminal of which is connected to the emitter of the transistor Q5, and the negative terminal of which is connected to the discharge node A.

10. The home electricity storage system start-up circuit based on capacitor discharge according to claim 6, wherein, The switching circuit unit also includes a resistor R26 and a diode D74; one end of the resistor R26 is connected to the collector of the transistor Q5, the other end of the resistor R26 is connected to the cathode of the diode D74, and the anode of the diode D74 is connected to the power-on signal input port POW_CTRL.

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