An activation circuit and energy storage power supply

Abstract

The embodiment of the present invention discloses an activation circuit and an energy storage power supply, wherein the activation circuit includes a power access terminal, a reflux drive module and an isolation output module, wherein the power access terminal includes a first live wire terminal, a second live wire terminal and a neutral wire terminal; the reflux input terminal of the reflux drive module is respectively connected to the power access terminal, the reflux output terminal of the reflux drive module is respectively connected to the power access terminal, and the reflux drive module is also connected to the isolation output module; the reflux drive module is used to output a first control signal to the isolation output module in response to a first reflux signal, a second reflux signal or a third reflux signal; the isolation output module is used to output an activation signal when receiving the first control signal. The embodiment of the present invention sets a multi-input and multi-output reflux drive module, which forms a corresponding current loop and outputs a first control signal when connecting different input power supplies, so that the isolation output module outputs an activation signal to increase the application range of the activation circuit.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of energy storage power supplies, and in particular to an activation circuit and an energy storage power supply. Background Art

[0002] As new energy products become more and more popular, energy storage power supplies, as one of the new energy products, are also very popular among consumers. For household energy storage power supplies, in order to meet the wide range of consumer uses, household energy storage power supplies are compatible with single-phase single live wire (L1 line, N line) AC input, split-phase double live wire (L1 line, L2 line, N line) AC input and single-phase double live wire (L1 line, L2 line, without N line) AC input. In order to facilitate consumers to use, energy storage power supplies are equipped with a self-activation function. For example, when the AC (AC) input is inserted to charge the energy storage power supply, the consumer does not need to manually press the button to activate the energy storage power supply. The system circuit will automatically activate the energy storage power supply and start charging.

[0003] The activation circuit used in the current household energy storage power supply, when using single-phase single-live-wire AC for charging, can only activate the energy storage power supply during the positive half-wave of the AC. During the negative half-wave of the AC, the energy storage power supply cannot be activated. When using split-phase dual-live-wire AC for charging, its working principle is the same as that of single-phase single-live-wire AC charging, but during the negative half-wave of the AC, because the other line is 180° out of phase, the other line is in the positive half-wave at this time, which enables the activation circuit to work. Therefore, there is no situation where the energy storage power supply is not activated during the negative half-wave of the AC. When using single-phase dual-live-wire AC for charging, no matter it is the positive or negative half-wave of the AC, a current loop cannot be formed in the activation circuit, the activation circuit does not work, and the energy storage power supply cannot be activated.

[0004] Under the condition of single-phase single-live-wire AC charging, the activation circuit can only activate the energy storage power supply during the positive half-wave of AC; under the condition of single-phase dual-live-wire AC charging, the energy storage power supply cannot be activated; therefore, the activation circuit is not suitable for the conditions of single-phase single-live-wire AC charging and single-phase dual-live-wire AC charging. Summary of the invention

[0005] The main technical problem solved by the embodiments of the present invention is to provide an activation circuit and an energy storage power supply, which can solve the problem that the activation circuit is not suitable for single-phase single-live-wire AC charging and single-phase dual-live-wire AC charging.

[0006] In order to solve the above technical problems, a technical solution adopted in an embodiment of the present invention is: to provide an activation circuit, including: a power access terminal, a reflux drive module and an isolation output module, wherein the power access terminal includes a first live wire terminal, a second live wire terminal and a neutral wire terminal; the reflux input terminal of the reflux drive module is respectively connected to the first live wire terminal, the second live wire terminal and the neutral wire terminal, the reflux output terminal of the reflux drive module is respectively connected to the first live wire terminal, the second live wire terminal and the neutral wire terminal, the reflux drive module is also connected to the isolation output module, and the power access terminal is used to connect the input power supply; the reflux drive module is used to respond to the first reflux signal between the first live wire terminal and the neutral wire terminal, the second reflux signal between the second live wire terminal and the neutral wire terminal, or the third reflux signal between the first live wire terminal and the second live wire terminal to output a first control signal to the isolation output module; the isolation output module is used to output an activation signal when receiving the first control signal.

[0007] In some embodiments, the reflux driving module is respectively provided with a diode D3, a diode D4, a diode D5, a diode D6, a diode D7 and a diode D8, and the anode of the diode D3, the anode of the diode D4 and the anode of the diode D5 are respectively used as the reflux input end of the reflux driving module; the cathode of the diode D6, the cathode of the diode D7 and the cathode of the diode D8 are respectively used as the reflux output end of the reflux driving module.

[0008] In some embodiments, the reflux drive module includes a diode D3, a diode D4, a diode D5, a diode D6, a diode D7, a diode D8, a resistor R4 and a resistor R6, the anode of the diode D3 is connected to the first live wire end, the anode of the diode D4 is connected to the second live wire end, the anode of the diode D5 is connected to the neutral wire end, the cathode of the diode D3, the cathode of the diode D4 and the cathode of the diode D5 are connected to the first end of the resistor R4; the second end of the resistor R4 is connected to the first end of the resistor R6 and the first connection end of the isolated output module, the second end of the resistor R6 is connected to the second connection end of the isolated output module, the anode of the diode D6, the anode of the diode D7 and the anode of the diode D8, the cathode of the diode D6 is used to connect to the first live wire end, the cathode of the diode D7 is used to connect to the second live wire end, and the cathode of the diode D8 is used to connect to the neutral wire end.

[0009] In some embodiments, the isolation output module is used to output the activation signal when the voltage of the first control signal is greater than a first preset threshold.

[0010] In some embodiments, the isolated output module includes a capacitor C2, a voltage-stabilizing diode DZ2, a resistor R5 and an optocoupler U2, the first end of the capacitor C2 is connected to the first end of the resistor R6 and the cathode of the voltage-stabilizing diode DZ2, the second end of the capacitor C2 is connected to the second end of the resistor R6, the second end of the resistor R5 and the cathode of the optocoupler U2, the first end of the resistor R5 is connected to the anode of the voltage-stabilizing diode DZ2 and the anode of the optocoupler U2; the collector of the optocoupler U2 is used to connect to a power supply, and the emitter of the optocoupler U2 is used to output the activation signal.

[0011] In some embodiments, the activation circuit also includes an adjustment module, the input end of the adjustment module is respectively connected to the first live wire end and the second live wire end, and the output end of the adjustment module is connected to the control signal output end of the reflux driving module; the adjustment module is used to respond to the third reflux signal and adjust the voltage ratio of the control signal output end of the reflux driving module so that the reflux driving module outputs the first control signal based on the third reflux signal and the adjusted voltage ratio.

[0012] In some embodiments, the regulation module includes a rectifier and filter unit, a drive unit and an adjustment unit, the first input end of the rectifier and filter unit is connected to the first live wire end, the second input end of the rectifier and filter unit is connected to the second live wire end, the output end of the rectifier and filter unit is connected to the input end of the drive unit, the output end of the drive unit is connected to the input end of the regulation unit, the first connection end of the regulation unit is connected to the first connection end of the isolation output module, and the second connection end of the regulation unit is connected to the second connection end of the isolation output module; the rectifier and filter unit is used to output a DC voltage in response to the third reflux signal; the drive unit is used to output a drive signal in response to the DC voltage; the regulation unit is used to adjust the voltage ratio of the control signal output end of the reflux drive module when receiving the drive signal.

[0013] In some embodiments, the rectification and filtering unit includes a rectifier bridge DB1 and a capacitor CE1, the driving unit includes a resistor R8, a resistor R9, a capacitor C3 and a zener diode DZ3, the first input end of the rectifier bridge DB1 is connected to the first live wire end, the second input end of the rectifier bridge DB1 is connected to the second live wire end, the positive output end of the rectifier bridge DB1 is connected to the capacitor CE1 and the first end of the resistor R8, the negative output end of the rectifier bridge DB1 and the second end of the capacitor CE1 are grounded; the second end of the resistor R8 is connected to the first end of the resistor R9, the first end of the capacitor C3 and the cathode of the zener diode DZ3, the anode of the zener diode DZ3 is connected to the input end of the adjustment unit, and the second end of the capacitor C3 and the second end of the resistor R9 are grounded.

[0014] In some embodiments, the adjustment unit includes a resistor R7, a resistor R10 and an optocoupler U3, the first end of the resistor R10 is connected to the output end of the driving unit and the anode of the optocoupler U3, and the second end of the resistor R10 and the cathode of the optocoupler U3 are grounded; the first end of the resistor R7 is connected to the first connection end of the isolation output module, the second end of the resistor R7 is connected to the collector of the optocoupler U3, and the emitter of the optocoupler U3 is connected to the second connection end of the isolation output module.

[0015] In order to solve the above technical problem, another technical solution adopted in the embodiment of the present invention is: to provide an energy storage power supply, including: the activation circuit as described above.

[0016] The beneficial effects of the embodiments of the present invention are as follows: different from the prior art, the embodiments of the present invention provide a multi-input and multi-output reflux drive module. When different input power supplies are connected, the reflux drive module forms a corresponding current loop and outputs a first control signal. The isolation output module outputs an activation signal in response to the first control signal to increase the application range of the activation circuit. In addition, an adjustment module is provided to adjust the voltage ratio of the output end of the control signal of the reflux drive module under the operating conditions of single-phase dual-live wire or split-phase dual-live wire AC charging, thereby improving the requirements for the input voltage and avoiding the situation where the energy storage power supply is still activated when the input voltage is undervoltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Voltage waveform diagram of single-phase single-live-wire AC power or single-phase dual-live-wire AC power;

[0018] Figure 2 Voltage waveform diagram of split-phase double-live AC;

[0019] Figure 3 A circuit schematic diagram of an existing activation circuit;

[0020] Figure 4 A schematic diagram of the structure of an activation circuit provided by an embodiment of the present invention;

[0021] Figure 5 A circuit schematic diagram of an activation circuit provided by an embodiment of the present invention;

[0022] Figure 6 A schematic structural diagram of another activation circuit provided by an embodiment of the present invention;

[0023] Figure 7 A schematic structural diagram of a regulating module provided in an embodiment of the present invention;

[0024] Figure 8 A circuit schematic diagram of another activation circuit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "bottom" and the like used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0027] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0028] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0029] Figure 1The voltage waveform of a single-phase single-live-wire AC power with a voltage of 120V is shown. The positive half-wave current direction of the sinusoidal AC power flows from the first live wire L1 to the neutral wire N, and the negative half-wave current direction of the sinusoidal AC power flows from the neutral wire N to the first live wire L1; Figure 1 The voltage waveform shown may also be a single-phase dual-live-wire AC voltage of 208V or 240V, where the positive half-wave current direction of the sinusoidal AC flows from the first live wire L1 to the second live wire L2, and the negative half-wave current direction of the sinusoidal AC flows from the second live wire L2 to the first live wire L1.

[0030] Figure 2 The figure shows a voltage waveform of a split-phase double-live alternating current with a voltage of 120V. The positive half-wave of the sinusoidal alternating current is staggered by 180°, and the current flows from the first live wire L1 to the neutral wire N and from the second live wire L2 to the neutral wire N. The negative half-wave of the sinusoidal alternating current is staggered by 180°, and the current flows from the neutral wire N to the first live wire L1 and from the neutral wire N to the second live wire L2 respectively.

[0031] Figure 2 The figure shows the circuit structure of the activation circuit of the currently commonly used household energy storage power supply. Combined with the voltage waveform of single-phase single-live-wire AC, single-phase double-live-wire AC or split-phase double-live-wire AC, it can be seen that:

[0032] When using single-phase single-live-wire AC to charge the energy storage power supply, only when the AC power is in the positive half-wave, that is, the current flows from the first live wire L1 to the neutral wire N, the AC power is divided by the diode D1, the resistor R1 and the resistor R3, and the voltage across the resistor R3 breaks through the voltage-stabilizing diode ZD1 and makes the optocoupler U1 work, the activation signal Wakeup signal is high level, and the energy storage power supply is activated. When the AC power is in the negative half-wave, because the diode D1 is cut off, the optocoupler U1 does not work, the activation signal Wakeupsignal is low level, and the energy storage power supply cannot be activated.

[0033] When using split-phase dual-live-wire AC for charging, its working principle is the same as that of single-phase single-live-wire AC charging, but when the AC is in the negative half-wave, because the other line is 180° out of phase, the other line is in the positive half-wave, which can make the activation circuit work and make the activation signal Wakeup signal high. Therefore, under this working condition, the activation signal Wakeup signal is always high and the activation signal can be output normally.

[0034] When single-phase dual-live-wire AC is used for charging, no current loop can be formed in the activation circuit regardless of the positive or negative half-wave of the AC, the activation circuit does not work, the activation signal Wakeup signal is always at a low level, and the energy storage power supply cannot be activated.

[0035] In summary, under the condition of single-phase single-live-wire AC charging, the activation circuit can only activate the energy storage power supply during the positive half-wave of AC; and under the condition of single-phase dual-live-wire AC charging, the energy storage power supply cannot be activated; therefore, the activation circuit is defective.

[0036] In order to solve the problem that the activation circuit is not suitable for the working condition of single-phase dual-live-wire AC charging, and is not completely suitable for the working condition of single-phase single-live-wire AC charging, an embodiment of the present invention provides an activation circuit, and its structural schematic diagram is shown as follows: Figure 4 As shown, the activation circuit includes a power supply input terminal 110, a reflux driving module 120 and an isolation output module 130, wherein the power supply input terminal 110 includes a first live wire terminal grid_L1, a second live wire terminal grid_L2 and a neutral wire terminal grid_N.

[0037] The reflux input terminal of the reflux driving module 120 is respectively connected to the first live wire terminal grid_L1, the second live wire terminal grid_L1 and the neutral wire terminal grid_N, the reflux output terminal of the reflux driving module 120 is respectively connected to the first live wire terminal grid_L1, the second live wire terminal grid_L1 and the neutral wire terminal grid_N, the reflux driving module 120 is also connected to the isolation output module 130, and the power supply input terminal 110 is used to connect the input power supply 20.

[0038] The return drive module 120 is used to respond to the first return signal between the first live terminal grid_L1 and the neutral terminal grid_N, the second return signal between the second live terminal grid_L2 and the neutral terminal grid_N, or the third return signal between the first live terminal grid_L1 and the second live terminal grid_L2 to output a first control signal to the isolation output module 130; the isolation output module 130 is used to output an activation signal Wakeup signal when receiving the first control signal.

[0039] Specifically, depending on the input power supply 20, the port to which the power access terminal 110 is connected to the input power supply 20 is different. For example, if the input power supply 20 is single-phase single-live wire AC, the effective ports of the power input terminal 110 are the first live wire terminal grid_L1 and the neutral wire terminal grid_N, that is, the return input terminal of the return drive module 120 is respectively connected to the first live wire L1 and the neutral wire N of the input power supply 20 through the first live wire terminal grid_L1 and the neutral wire terminal grid_N, and the return output terminal of the return drive module 120 is also respectively connected to the first live wire L1 and the neutral wire N of the input power supply 20 through the first live wire terminal grid_L1 and the neutral wire terminal grid_N; the same is true for single-phase double-live wire AC and split-phase double-live wire AC, which will not be elaborated here.

[0040] In the positive half-wave of the single-phase single-live-wire AC, the connection point between the return input terminal of the return drive module 120 and the first live wire terminal grid_L1 is used as a high potential point, and the connection point between the return output terminal of the return drive module 120 and the neutral wire terminal grid_N is used as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return drive module 120, thereby generating a first return signal. It should be noted that the first return signal, the second return signal and the third return signal are current signals.

[0041] On the contrary, in the negative half-wave of the single-phase single-live-wire AC power, the connection point between the return input terminal of the return drive module 120 and the neutral terminal grid_N is used as a high potential point, and the connection point between the return output terminal of the return drive module 120 and the first live terminal grid_L1 is used as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return drive module 120, thereby generating a first return signal. The reason why the same return signal is used is that in the return drive module 120, the direction of the current always flows from the return input terminal to the return output terminal.

[0042] When the split-phase dual-live-wire AC is charged, there are two ACs, the first AC is the AC between the first live wire L1 and the neutral wire N, and the second AC is the AC between the second live wire L2 and the neutral wire N. Therefore, in the positive half-wave of the first AC, the connection point between the return input terminal of the return drive module 120 and the first live wire terminal grid_L1 is used as a high potential point, and the connection point between the return output terminal of the return drive module 120 and the neutral wire terminal grid_N is used as a low potential point, so that the return A voltage drop is generated between the return input terminal and the return output terminal of the driving module 120, thereby generating a first return signal; at this time, the second alternating current is a negative half-wave, and the connection point between the return input terminal of the return driving module 120 and the neutral line terminal grid_N is used as a high potential point, and the connection point between the return output terminal of the return driving module 120 and the second live line terminal grid_L2 is used as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return driving module 120, thereby generating a second return signal.

[0043] On the contrary, during the negative half-wave of the first alternating current, the connection point between the return input terminal of the return driving module 120 and the neutral line terminal grid_N serves as a high potential point, and the connection point between the return output terminal of the return driving module 120 and the first live line terminal grid_L1 serves as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return driving module 120, thereby generating a first return signal; at this time, the second alternating current is a positive half-wave, and the connection point between the return input terminal of the return driving module 120 and the second live line terminal grid_L2 serves as a high potential point, and the connection point between the return output terminal of the return driving module 120 and the neutral line terminal grid_N serves as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return driving module 120, thereby generating a second return signal.

[0044] However, since the phases of the first alternating current and the second alternating current are always opposite, the voltage drop between the first live wire L1 and the second live wire L2 is the largest. Therefore, in fact, in the return drive module 120, there is always only the third return signal, that is, in the positive half-wave of the first alternating current and the negative half-wave of the second alternating current, the connection point between the return input terminal of the return drive module 120 and the first live wire terminal grid_L1 is used as a high potential point, and the connection point between the return output terminal of the return drive module 120 and the second live wire terminal grid_L2 is used as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return drive module 120, thereby generating the third return signal; During the negative half-wave of the first alternating current and the positive half-wave of the second alternating current, the connection point between the return input terminal of the return driving module 120 and the second live wire terminal grid_L2 serves as a high potential point, and the connection point between the return output terminal of the return driving module 120 and the first live wire terminal grid_L1 serves as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return driving module 120, thereby generating a third return signal.

[0045] During the positive half-wave of the single-phase dual-live-wire alternating current, the connection point between the return input terminal of the return driving module 120 and the first live wire terminal grid_L1 is used as a high potential point, and the connection point between the return output terminal of the return driving module 120 and the second live wire terminal grid_L2 is used as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return driving module 120, thereby generating a third return signal; during the negative half-wave of the single-phase dual-live-wire alternating current, the connection point between the return input terminal of the return driving module 120 and the second live wire terminal grid_L2 is used as a high potential point, and the connection point between the return output terminal of the return driving module 120 and the first live wire terminal grid_L1 is used as a low potential point, so that a voltage drop is generated between the return input terminal and the return output terminal of the return driving module 120, thereby generating a third return signal.

[0046] Based on the above-mentioned function of the reflux driving module 120 , the isolation output module 130 can always receive the first control signal, and the isolation output module 130 can output the activation signal Wakeup signal only when the voltage of the first control signal is greater than the first preset threshold.

[0047] As an example but not limitation, the above-described backflow driving module 120 can be implemented based on the unidirectional conductivity of the diode. For example, a diode D3, a diode D4, a diode D5, a diode D6, a diode D7 and a diode D8 are set in the backflow driving module 120, and the anode of the diode D3, the anode of the diode D4 and the anode of the diode D5 are respectively used as the backflow input end of the backflow driving module 120, and the cathode of the diode D6, the cathode of the diode D7 and the cathode of the diode D8 are respectively used as the backflow output end of the backflow driving module.

[0048] In some embodiments of the present application, a circuit structure of an activation circuit is provided, and its schematic diagram is as follows: Figure 5 As shown, the reflux driving module 120 of the activation circuit includes a diode D3, a diode D4, a diode D5, a diode D6, a diode D7, a diode D8, a resistor R4 and a resistor R6; the isolation output module 130 includes a capacitor C2, a voltage stabilizing diode DZ2, a resistor R5 and an optocoupler U2.

[0049] The anode of diode D3 is connected to the first live wire terminal grid_L1, the anode of diode D4 is connected to the second live wire terminal grid_L2, the anode of diode D5 is connected to the neutral wire terminal grid_N, and the cathode of diode D3, the cathode of diode D4 and the cathode of diode D5 are connected to the first end of resistor R4.

[0050] The second end of the resistor R4 is connected to the first end of the resistor R6, the first end of the capacitor C2 and the cathode of the voltage-stabilizing diode DZ2, the second end of the resistor R6 is connected to the anode of the diode D6, the anode of the diode D7 and the anode of the diode D8, the cathode of the diode D6 is used to connect to the first live wire terminal grid_L1, the cathode of the diode D7 is used to connect to the second live wire terminal grid_L2, and the cathode of the diode D8 is used to connect to the neutral wire terminal grid_N.

[0051] The first end of the capacitor C2 is connected to the first end of the resistor R6 and the cathode of the Zener diode DZ2, the second end of the capacitor C2 is connected to the second end of the resistor R6, the second end of the resistor R5 and the cathode of the optocoupler U2, the first end of the resistor R5 is connected to the anode of the Zener diode DZ2 and the anode of the optocoupler U2; the collector of the optocoupler U2 is used to connect to the power supply VCC, and the emitter of the optocoupler U2 is used to output an activation signal Wakeup signal.

[0052] Specifically, when charging with single-phase single-live-wire AC, during the positive half-wave of the AC, that is, the current flows from the first live-wire terminal grid_L1 to the neutral-wire terminal grid_N, the AC is divided by the diode D3, the resistor R4, the resistor R6 and the diode D8, and the voltage across the resistor R6 is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeupsignal is at a high level, activating the energy storage power supply. During the negative half-wave of the AC, that is, the current flows from the neutral-wire terminal grid_N to the first live-wire terminal grid_L1, the AC is divided by the diode D5, the resistor R4, the resistor R6 and the diode D6, and the voltage across the resistor R6 is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeup signal is still at a high level, activating the energy storage power supply.

[0053] When charging with single-phase dual-live AC power, during the positive half-wave of the AC power, that is, the current flows from the first live wire terminal grid_L1 to the second live wire terminal grid_L2, after the AC power is divided by the diode D3, the resistor R4, the resistor R6 and the diode D7, the voltage across the resistor R6 is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeupsignal is at a high level, activating the energy storage power supply. During the negative half-wave of the AC power, that is, the current flows from the second live wire terminal grid_L2 to the first live wire terminal grid_L1, after the AC power is divided by the diode D4, the resistor R4, the resistor R6 and the diode D6, the voltage across the resistor R6 is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeup signal is still at a high level, activating the energy storage power supply.

[0054] When using split-phase dual-live-wire AC for charging, the working principle is the same as that of single-phase dual-live-wire AC charging, which will not be repeated here.

[0055] Different from the prior art, the embodiment of the present invention provides a multi-input and multi-output return drive module. When connected to different input power supplies, the return drive module forms a corresponding current loop and outputs a first control signal. The isolation output module outputs an activation signal in response to the first control signal to increase the application range of the activation circuit.

[0056] In order to further improve the reliability of the activation circuit, the embodiment of the present invention provides another activation circuit, the structural diagram of which is shown in FIG. Figure 6 As shown, the activation circuit includes a power supply input terminal 110, a reflux driving module 120, an isolation output module 130 and a regulation module, wherein the power supply input terminal 110 includes a first live wire terminal grid_L1, a second live wire terminal grid_L2 and a neutral wire terminal grid_N.

[0057] The reflux input end of the reflux driving module 120 is respectively connected to the first live wire terminal grid_L1, the second live wire terminal grid_L1 and the neutral wire terminal grid_N, the reflux output end of the reflux driving module 120 is respectively connected to the first live wire terminal grid_L1, the second live wire terminal grid_L1 and the neutral wire terminal grid_N, the reflux driving module 120 is also connected to the isolation output module 130, the power supply access end 110 is used to connect the input power supply 20, the input end of the adjustment module 140 is respectively connected to the first live wire terminal grid_L1 and the second live wire terminal grid_L2, and the output end of the adjustment module 140 is connected to the control signal output end of the reflux driving module 120.

[0058] The reflux driving module 120 is used to respond to the first reflux signal between the first live wire terminal grid_L1 and the neutral wire terminal grid_N, the second reflux signal between the second live wire terminal grid_L2 and the neutral wire terminal grid_N, or the third reflux signal between the first live wire terminal grid_L1 and the second live wire terminal grid_L2 to output a first control signal to the isolation output module 130; the isolation output module 130 is used to output an activation signal Wakeup signal when receiving the first control signal; the adjustment module 140 is used to respond to the third reflux signal and adjust the voltage ratio of the control signal output terminal of the reflux driving module 120, so that the reflux driving module 120 outputs the first control signal based on the third reflux signal and the adjusted voltage ratio.

[0059] In some embodiments of the present application, the structural diagram of the adjustment module 140 is as follows: Figure 7 As shown, the regulating module 140 includes a rectifying and filtering unit 141 , a driving unit 142 and a regulating unit 143 .

[0060] Among them, the first input end of the rectification and filtering unit 141 is connected to the first live wire end grid_L1, the second input end of the rectification and filtering unit 141 is connected to the second live wire end grid_L2, the output end of the rectification and filtering unit 141 is connected to the input end of the driving unit 142, the output end of the driving unit 142 is connected to the input end of the adjustment unit 143, the first connection end of the adjustment unit 143 is connected to the first connection end of the isolation output module 120, and the second connection end of the adjustment unit 143 is connected to the second connection end of the isolation output module 120.

[0061] The rectifier and filter unit 141 is used to output a DC voltage in response to a third return signal; the drive unit 142 is used to output a drive signal in response to the DC voltage; and the adjustment unit 143 is used to adjust the voltage ratio of the control signal output end of the return drive module when receiving the drive signal.

[0062] Specifically, the driving unit 142 is used to output a driving signal when the DC voltage is greater than a second preset threshold value, thereby improving the reliability of the circuit.

[0063] It should be noted that for single-phase single live wire input, the voltage value of the first return signal and the second return signal formed is 120V, while for single-phase dual live wire or split-phase dual live wire input, the voltage value of the third return signal formed is 208V or 240V. If the single-phase single live wire input and the dual live wire input share the first preset threshold, the activation point can be reached even when the dual live wire input may be undervoltage, so that the activation circuit outputs an activation signal to activate the energy storage power supply. By adopting the activation circuit of the above embodiment, it is possible to solve the problem that when charging with single-phase dual live wire AC or split-phase dual live wire AC, the rated voltage of the single-phase dual live wire AC or split-phase dual live wire AC is higher than the rated voltage of the single-phase single live wire AC, so even if the single-phase dual live wire AC or split-phase dual live wire AC is undervoltage, the activation circuit can still output an activation signal, thereby further improving the reliability of the activation circuit.

[0064] As an example but not limitation, in combination with the circuit schematic diagram of the above-mentioned activation circuit, the adjustment unit 143 can be connected at both ends of the resistor R6. When the adjustment unit 143 does not receive a driving signal, the resistor R4 and the resistor R6 divide the voltage; when the adjustment unit 143 receives a driving signal, a resistor is connected in parallel at both ends of the resistor R6 to increase the voltage share of the resistor R4.

[0065] Or on the contrary, the regulating unit 143 is connected to both ends of the resistor R4. When the regulating unit 143 does not receive a driving signal, the resistance of the regulating unit 143 is connected in parallel with the resistor R4, thereby increasing the voltage ratio across the resistor R6; when the regulating unit 143 receives a driving signal, the resistance of the regulating unit is not incorporated into the two ends of the resistor R4 to reduce the voltage ratio of the resistor R6, thereby increasing the requirement for the DC voltage and avoiding the activation circuit activating the energy storage power supply when the single-phase dual-live wire AC or split-phase dual-live wire AC input is undervoltage.

[0066] In some embodiments of the present application, another activation circuit is provided, and its circuit schematic diagram is as follows: Figure 8 As shown, the reflux driving module 120 of the activation circuit includes a diode D3, a diode D4, a diode D5, a diode D6, a diode D7, a diode D8, a resistor R4 and a resistor R6; the isolation output module 130 includes a capacitor C2, a voltage regulator diode DZ2, a resistor R5 and an optocoupler U2; and the adjustment module 140 includes a rectifier and filter unit 141, a drive unit 142 and an adjustment unit 143.

[0067] The rectifying and filtering unit 141 includes a rectifying bridge DB1 and a capacitor CE1 , the driving unit 142 includes a resistor R8 , a resistor R9 , a capacitor C3 and a voltage stabilizing diode DZ3 , and the regulating unit 143 includes a resistor R7 , a resistor R10 and an optical coupler U3 .

[0068] The anode of diode D3 is connected to the first live wire terminal grid_L1, the anode of diode D4 is connected to the second live wire terminal grid_L2, the anode of diode D5 is connected to the neutral wire terminal grid_N, and the cathode of diode D3, the cathode of diode D4 and the cathode of diode D5 are connected to the first end of resistor R4.

[0069] The second end of the resistor R4 is connected to the first end of the resistor R6, the first end of the capacitor C2 and the cathode of the voltage-stabilizing diode DZ2, the second end of the resistor R6 is connected to the anode of the diode D6, the anode of the diode D7 and the anode of the diode D8, the cathode of the diode D6 is used to connect to the first live wire terminal grid_L1, the cathode of the diode D7 is used to connect to the second live wire terminal grid_L2, and the cathode of the diode D8 is used to connect to the neutral wire terminal grid_N.

[0070] The first end of the capacitor C2 is connected to the first end of the resistor R6 and the cathode of the Zener diode DZ2, the second end of the capacitor C2 is connected to the second end of the resistor R6, the second end of the resistor R5 and the cathode of the optocoupler U2, the first end of the resistor R5 is connected to the anode of the Zener diode DZ2 and the anode of the optocoupler U2; the collector of the optocoupler U2 is used to connect to the power supply VCC, and the emitter of the optocoupler U2 is used to output an activation signal Wakeup signal.

[0071] The first input end of the rectifier bridge DB1 is connected to the first live wire end grid_L1, the second input end of the rectifier bridge DB1 is connected to the second live wire end grid_L2, the positive output end of the rectifier bridge DB1 is connected to the capacitor CE1 and the first end of the resistor R8, and the negative output end of the rectifier bridge DB1 and the second end of the capacitor CE1 are grounded.

[0072] The second end of the resistor R8 is connected to the first end of the resistor R9, the first end of the capacitor C3 and the cathode of the Zener diode DZ3, the anode of the Zener diode DZ3 is connected to the first end of the resistor R10 and the anode of the optocoupler U3, and the second end of the capacitor C3 and the second end of the resistor R9 are grounded.

[0073] The second end of the resistor R10 and the cathode of the optocoupler U3 are grounded; the first end of the resistor R7 is connected to the first end of the resistor R6, the second end of the resistor R7 is connected to the collector of the optocoupler U3, and the emitter of the optocoupler U3 is connected to the second end of the resistor R6.

[0074] Specifically, when charging with single-phase single-live-wire AC, during the positive half-wave of the AC, that is, the current flows from the first live-wire terminal grid_L1 to the neutral-wire terminal grid_N, the AC is divided by the diode D3, the resistor R4, the resistor R6 and the diode D8, and the voltage across the resistor R6 is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeupsignal is at a high level, activating the energy storage power supply. During the negative half-wave of the AC, that is, the current flows from the neutral-wire terminal grid_N to the first live-wire terminal grid_L1, the AC is divided by the diode D5, the resistor R4, the resistor R6 and the diode D6, and the voltage across the resistor R6 is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeup signal is still at a high level, activating the energy storage power supply.

[0075] When charging is performed using single-phase dual-live-wire AC power, after the AC power is rectified and filtered by the rectifier bridge DB1 and the capacitor CE1, the voltage across the capacitor CE1 is divided by the resistors R8 and R9. The voltage across the resistor R9 breaks through the voltage-stabilizing diode ZD3 and causes the optocoupler U3 to work, so that the resistor R7 is connected in parallel with the resistor R6, thereby lowering the resistance across the capacitor C2, thereby reducing the voltage ratio across the resistor R6, that is, the voltage ratio across the capacitor C2, and increasing the voltage demand for the AC power.

[0076] During the positive half-wave of the alternating current, that is, the current flows from the first live wire terminal grid_L1 to the second live wire terminal grid_L2, after the alternating current is divided by the diode D3, the resistor R4, the equivalent resistor of the resistor R6 and the resistor R7 in parallel, and the diode D7, the voltage across the equivalent resistor of the resistor R6 and the resistor R7 in parallel is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeup signal is at a high level, activating the energy storage power supply. During the negative half-wave of the alternating current, that is, the current flows from the second live wire terminal grid_L2 to the first live wire terminal grid_L1, after the alternating current is divided by the diode D4, the resistor R4, the equivalent resistor of the resistor R6 and the resistor R7 in parallel, and the diode D6, the voltage across the equivalent resistor of the resistor R6 and the resistor R7 in parallel is sufficient to break through the voltage-stabilizing diode ZD2, so that the optocoupler U2 works, and the activation signal Wakeup signal is still at a high level, activating the energy storage power supply.

[0077] When using split-phase dual-live-wire AC for charging, the working principle is the same as that of single-phase dual-live-wire AC charging, which will not be repeated here.

[0078] Different from the prior art, the implementation method of the present invention provides a multi-input and multi-output reflux drive module. When different input power supplies are connected, the reflux drive module forms a corresponding current loop and outputs a first control signal. The isolation output module outputs an activation signal in response to the first control signal to increase the application scope of the activation circuit. In addition, an adjustment module is provided to adjust the voltage ratio of the output end of the control signal of the reflux drive module under the working conditions of single-phase dual-live wire AC or split-phase dual-live wire AC charging, thereby improving the requirements for the input voltage and avoiding the situation where the energy storage power supply is still activated when the input voltage is undervoltage.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present application as above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An activation circuit, characterized in that: include: A power supply access terminal, a reflux drive module, an isolation output module and a regulation module, wherein the power supply access terminal includes a first live wire terminal, a second live wire terminal and a neutral wire terminal; The reflux input end of the reflux driving module is respectively connected to the first live wire end, the second live wire end and the neutral wire end, the reflux output end of the reflux driving module is respectively connected to the first live wire end, the second live wire end and the neutral wire end, the reflux driving module is also connected to the isolation output module, the power supply access end is used to connect the input power supply, the input end of the regulating module is respectively connected to the first live wire end and the second live wire end, and the output end of the regulating module is connected to the control signal output end of the reflux driving module; The reflux driving module is used for outputting a first control signal to the isolation output module in response to a first reflux signal between the first live wire terminal and the neutral wire terminal, a second reflux signal between the second live wire terminal and the neutral wire terminal, or a third reflux signal between the first live wire terminal and the second live wire terminal; The isolated output module is used to output an activation signal when receiving the first control signal; The regulating module is used to respond to the third return signal and adjust the voltage ratio of the control signal output end of the return drive module, so that the return drive module outputs the first control signal based on the third return signal and the adjusted voltage ratio.

2. The circuit according to claim 1, characterized in that The reflux drive module is provided with a diode D3, a diode D4, a diode D5, a diode D6, a diode D7 and a diode D8 respectively. The anode of the diode D3, the anode of the diode D4 and the anode of the diode D5 are respectively used as the return input terminals of the return drive module; The cathode of the diode D6 , the cathode of the diode D7 , and the cathode of the diode D8 respectively serve as the return output terminals of the return drive module.

3. The circuit according to claim 1, characterized in that The backflow driving module includes a diode D3, a diode D4, a diode D5, a diode D6, a diode D7, a diode D8, a resistor R4 and a resistor R6. The anode of the diode D3 is connected to the first live wire terminal, the anode of the diode D4 is connected to the second live wire terminal, the anode of the diode D5 is connected to the neutral wire terminal, and the cathode of the diode D3, the cathode of the diode D4 and the cathode of the diode D5 are connected to the first end of the resistor R4; The second end of the resistor R4 is connected to the first end of the resistor R6 and the first connection end of the isolated output module, the second end of the resistor R6 is connected to the second connection end of the isolated output module, the anode of the diode D6, the anode of the diode D7 and the anode of the diode D8, the cathode of the diode D6 is used to connect to the first live wire terminal, the cathode of the diode D7 is used to connect to the second live wire terminal, and the cathode of the diode D8 is used to connect to the neutral wire terminal.

4. The circuit according to claim 1, characterized in that The isolation output module is used to output the activation signal when the voltage of the first control signal is greater than a first preset threshold.

5. The circuit according to claim 3, characterized in that The isolated output module includes a capacitor C2, a voltage stabilizing diode DZ2, a resistor R5 and an optical coupler U2. The first end of the capacitor C2 is connected to the first end of the resistor R6 and the cathode of the voltage-stabilizing diode DZ2, the second end of the capacitor C2 is connected to the second end of the resistor R6, the second end of the resistor R5 and the cathode of the optical coupler U2, and the first end of the resistor R5 is connected to the anode of the voltage-stabilizing diode DZ2 and the anode of the optical coupler U2; The collector of the optical coupler U2 is used to connect to a power supply, and the emitter of the optical coupler U2 is used to output the activation signal.

6. The circuit according to claim 1, characterized in that The regulating module includes a rectifying and filtering unit, a driving unit and a regulating unit. The first input end of the rectifying and filtering unit is connected to the first live wire end, the second input end of the rectifying and filtering unit is connected to the second live wire end, the output end of the rectifying and filtering unit is connected to the input end of the driving unit, the output end of the driving unit is connected to the input end of the regulating unit, the first connecting end of the regulating unit is connected to the first connecting end of the isolated output module, and the second connecting end of the regulating unit is connected to the second connecting end of the isolated output module; The rectifying and filtering unit is used for outputting a DC voltage in response to the third return signal; The driving unit is used to output a driving signal in response to the DC voltage; The regulating unit is used to adjust the voltage proportion of the control signal output end of the reflux driving module when receiving the driving signal.

7. The circuit according to claim 6, characterized in that The rectifying and filtering unit includes a rectifying bridge DB1 and a capacitor CE1, and the driving unit includes a resistor R8, a resistor R9, a capacitor C3 and a voltage stabilizing diode DZ3. The first input end of the rectifier bridge DB1 is connected to the first live wire end, the second input end of the rectifier bridge DB1 is connected to the second live wire end, the positive output end of the rectifier bridge DB1 is connected to the capacitor CE1 and the first end of the resistor R8, and the negative output end of the rectifier bridge DB1 and the second end of the capacitor CE1 are grounded; The second end of the resistor R8 is connected to the first end of the resistor R9, the first end of the capacitor C3 and the cathode of the Zener diode DZ3, the anode of the Zener diode DZ3 is connected to the input end of the adjustment unit, and the second end of the capacitor C3 and the second end of the resistor R9 are grounded.

8. The circuit according to claim 6, characterized in that The adjustment unit includes a resistor R7, a resistor R10 and an optical coupler U3. The first end of the resistor R10 is connected to the output end of the driving unit and the anode of the optical coupler U3, and the second end of the resistor R10 and the cathode of the optical coupler U3 are grounded; The first end of the resistor R7 is connected to the first connection end of the isolation output module, the second end of the resistor R7 is connected to the collector of the optocoupler U3, and the emitter of the optocoupler U3 is connected to the second connection end of the isolation output module.

9. An energy storage power supply, characterized in that: include: An activation circuit as claimed in any one of claims 1 to 8.

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