Passive connection power on-off device, power adapter, battery pack and intelligent sofa

Abstract

The invention provides a passive connection power supply on-off device, a power adapter, a battery pack and an intelligent sofa. The passive connection power supply on-off device comprises a passive on-off acquisition module and a passive connection regulation and control module. The acquisition end of the passive on-off acquisition module is used for being connected with a power line of a rear-end electric device; the input end of the passive connection regulation and control module is used for connecting a power line of a front-end power supply device, and the output end of the passive connection regulation and control module is used for connecting a power line of a rear-end power utilization device. After the rear-end electric device is normally powered off, the collection end of the passive on-off collection module collects the switching signal of the power line of the rear-end electric device, so that the collection end of the passive on-off central controller is converted from a high level to a low level, and the switching signal is transmitted only through the power line of the rear-end electric device. The front-end power supply device and the end power utilization device are connected, and the rapid power connection rate of the rear-end power utilization device is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of switches, and in particular, to a passive power-on switch, a power adapter, a battery pack, and a smart sofa. Background Art

[0002] Switches are used to provide a series of characteristics required to ensure the normal operation of the power systems in which they are located and the loads connected thereto. For example, ensuring the rated current required by various users, allowing the correct addition or disconnection of loads in a circuit, protecting the load from abnormal events such as overload and short circuit by automatically disconnecting the circuit, allowing the protected circuit to be disconnected by electrically separating or opening appropriate contacts, and completely insulating the load from the power supply.

[0003] Currently, products are developing towards intelligence and practicality to provide customers with a good user experience. Intelligence and practicality require the cooperation of relevant circuits to be completed. Especially in furniture such as smart sofas that contain a lot of flammable fillers, although the switch can disconnect the sofa from the power supply, before re-powering or starting, the switch needs to be manually reset to start the smart sofa load. For example, powering on the drive motor or motor of the smart sofa, resulting in a slow power-on and power-off rate of the switch. Summary of the Invention

[0004] An object of the present disclosure is to overcome the deficiencies in the prior art and provide a passive power-on switch, a power adapter, a battery pack, and a smart sofa that are convenient for quickly powering on.

[0005] The object of the present disclosure is achieved by the following technical solutions:

[0006] A passive power-on switch includes: a passive switch acquisition module and a passive power-on regulation module; the power connection end of the passive switch acquisition module is used to connect to a standard voltage, and the acquisition end of the passive switch acquisition module is used to connect to the power line of the rear-end electrical device to acquire the power-on switch signal of the rear-end electrical device; the input end of the passive power-on regulation module is used to connect to the power line of the front-end power supply device, and the output end of the passive power-on regulation module is used to connect to the power line of the rear-end electrical device, and the passive power-on regulation module is used to conduct when triggered by the power-on switch signal of the rear-end electrical device.

[0007] In one embodiment, the passive on-off acquisition module includes a first electronic switch tube, a second electronic switch tube, a first resistor, a second resistor, a third resistor, and a first on-off diode. The first end of the first electronic switch tube and the first end of the first resistor are both connected to a standard voltage. The second end of the first electronic switch tube is connected to the second end of the first resistor. The second end of the first electronic switch tube is also connected to the positive electrode of the first on-off diode. The control end of the first electronic switch tube is connected to the first end of the second electronic switch tube. The second end of the second electronic switch tube is grounded. The control end of the second electronic switch tube is connected to the positive electrode of the first on-off diode. The control end of the second electronic switch tube is also used to connect to the acquisition end of the passive on-off central controller. The negative electrode of the first on-off diode is connected to the power supply line of the rear-end electrical device.

[0008] In one embodiment, the passive on-off acquisition module further includes a second resistor and a third resistor. The control end of the second electronic switch tube is grounded through the second resistor. The control end of the second electronic switch tube is also connected to the first end of the third resistor. The second end of the third resistor is connected to the positive electrode of the first on-off diode.

[0009] In one embodiment, the passive on-off acquisition module further includes a fourth resistor. The second end of the first electronic switch tube is connected to the first end of the fourth resistor. The second end of the fourth resistor is connected to the positive electrode of the first on-off diode.

[0010] In one embodiment, the passive on-off acquisition module further includes a fifth resistor. The first end of the first electronic switch tube is connected to the first end of the fifth resistor. The second end of the fifth resistor is connected to the first end of the second electronic switch tube.

[0011] In one embodiment, the passive on-off acquisition module includes a third electronic switch tube, a sixth resistor, and a second on-off diode. The first end of the sixth resistor and the control end of the first end of the third electronic switch tube are both connected to a standard voltage. The second end of the sixth resistor is connected to the first end of the third electronic switch tube. The first end of the third electronic switch tube is used to connect to the acquisition end of the passive on-off central controller. The second end of the third electronic switch tube is connected to the positive electrode of the second on-off diode. The negative electrode of the second on-off diode is connected to the power supply line of the rear-end electrical device.

[0012] In one embodiment, the passive connection control module includes a make-break relay and a fourth electronic switch tube. The first end of the make-break relay is connected to the power supply line of the front-end power supply device, the second end of the make-break relay is connected to the power supply line of the rear-end power-consuming device, the first end of the fourth electronic switch tube is connected to the control end of the make-break relay, the second end of the fourth electronic switch tube is grounded, and the control end of the fourth electronic switch tube is used to connect to the make-break control output end of the passive make-break central controller.

[0013] In one embodiment, the passive make-break acquisition module includes a fifth electronic switch tube, a sixth electronic switch tube, a tenth resistor, an eleventh resistor, and a first anti-backflow diode. The first end of the fifth electronic switch tube is connected to the power supply end of the passive make-break central controller, and the second end of the fifth electronic switch tube is connected to the acquisition end of the passive make-break central controller; the power supply end of the passive make-break central controller is connected to the second end of the sixth electronic switch tube, and the first end of the sixth electronic switch tube is connected to the control end of the fifth electronic switch tube; the power supply end of the passive make-break central controller is also connected to the first end of the tenth resistor, the second end of the tenth resistor is respectively connected to the control end of the sixth electronic switch tube and the first end of the eleventh resistor, the second end of the eleventh resistor is respectively connected to the acquisition end of the passive make-break central controller and the positive electrode of the first anti-backflow diode, and the negative electrode of the first anti-backflow diode is used to connect to the power supply line of the rear-end power-consuming device.

[0014] In one embodiment, the passive make-break acquisition module includes a seventh resistor, an eighth resistor, and a second anti-backflow diode. The power supply end of the passive make-break central controller is connected to the first end of the eighth resistor, the second end of the eighth resistor is connected to the positive electrode of the second anti-backflow diode, the first end of the seventh resistor is connected to the power supply end of the passive make-break central controller, the second end of the seventh resistor is connected to the acquisition end of the passive make-break central controller, the second end of the seventh resistor is also connected to the positive electrode of the second anti-backflow diode, and the negative electrode of the second anti-backflow diode is used to connect to the power supply line of the rear-end power-consuming device.

[0015] A power adapter includes a passive make-break central controller and the passive connection power make-break device described in any of the above embodiments. The input end of the passive make-break central controller is connected to the acquisition end of the passive make-break acquisition module, and the output end of the passive make-break central controller is connected to the control end of the passive connection control module.

[0016] A battery pack includes the passive connection power make-break device described in any of the above embodiments.

[0017] An intelligent sofa includes the passive connection power make-break device described in any of the above embodiments.

[0018] Compared with the prior art, the present disclosure has at least the following advantages:

[0019] After the backend electrical device is normally powered off, the acquisition end of the passive on-off acquisition module acquires the switch signal of the power line of the backend electrical device to determine the power-on state of the backend electrical device again. Specifically, at this time, both the first electronic switch tube and the second electronic switch tube change from the conducting state to the off state, so that the acquisition end of the passive on-off central controller changes from a high level to a low level. Through the potential change of the acquisition end of the passive on-off central controller, it is convenient for the passive on-off central controller to control the passive connection regulation module to change from off to on. Just through the transmission of the switch signal by the power line of the backend electrical device, the connection between the front-end power supply device and the end electrical device is realized, and the power-on speed of the backend electrical device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Schematic diagram of a passive connection power on-off device in an embodiment;

[0022] Figure 2 For Figure 1 Circuit diagram of the passive on-off acquisition module in the passive connection power on-off device shown;

[0023] Figure 3 For Figure 1 Circuit diagram of the anti-spark protection module in the passive connection power on-off device shown;

[0024] Figure 4 Circuit diagram of the passive on-off acquisition module in another embodiment;

[0025] Figure 5 For Figure 1 Circuit diagram of the passive connection regulation module in the passive connection power on-off device shown;

[0026] Figure 6 Circuit diagram of the passive on-off acquisition module in still another embodiment;

[0027] Figure 7 Circuit diagram of the passive on-off acquisition module in yet another embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present disclosure can be understood more thoroughly and comprehensively.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present disclosure belongs. The terms used in the description of the present disclosure herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] The present disclosure relates to a passive power-on and power-off switch. The passive power-on and power-off switch includes a passive switch acquisition module and a passive power-on regulation module; the power connection terminal of the passive switch acquisition module is used to connect to a standard voltage, and the acquisition terminal of the passive switch acquisition module is used to connect to the power line of the rear-end electrical device to acquire the power-on switch signal of the rear-end electrical device; the input terminal of the passive power-on regulation module is used to connect to the power line of the front-end power supply device, and the output terminal of the passive power-on regulation module is used to connect to the power line of the rear-end electrical device. The passive power-on regulation module is used to conduct when triggered by the power-on switch signal of the rear-end electrical device. After the rear-end electrical device is normally powered off, the acquisition terminal of the passive switch acquisition module acquires the switch signal of the power line of the rear-end electrical device to determine the re-power-on state of the rear-end electrical device. Specifically, at this time, both the first electronic switch tube and the second electronic switch tube change from the conducting state to the off state, so that the acquisition terminal of the passive switch central controller changes from a high level to a low level. Through the potential change of the acquisition terminal of the passive switch central controller, it is convenient for the passive switch central controller to control the passive power-on regulation module to change from off to on. Only through the transmission of the switch signal through the power line of the rear-end electrical device, the connection between the front-end power supply device and the rear-end electrical device is realized, and the rapid power-on rate of the rear-end electrical device is improved.

[0032] Please refer to Figure 1 , which is a schematic diagram of the passive power-on and power-off switch according to an embodiment of the present disclosure.

[0033] A passive on - power switch 10 in one embodiment includes a passive switch acquisition module 100 and a passive on - control module 200; the power - connection terminal of the passive switch acquisition module 100 is used to connect to the standard voltage VDD_3V3, and the acquisition terminal of the passive switch acquisition module 100 is used to connect to the power supply line VOUT_28V0 of the rear - end power - consuming device to acquire the power - on switch signal of the rear - end power - consuming device; the input terminal of the passive on - control module 200 is used to connect to the power supply line VIN_28V of the front - end power - supply device, and the output terminal of the passive on - control module 200 is used to connect to the power supply line VOUT_28V0 of the rear - end power - consuming device. The passive on - control module 200 is used to conduct when triggered by the power - on switch signal of the rear - end power - consuming device.

[0034] In one embodiment, please refer to Figure 2 , the passive switch acquisition module 100 includes a first electronic switch tube Q3, a second electronic switch tube Q1, a first resistor R26, a second resistor R1, a third resistor R27, and a first on - off diode D5. The first end of the first electronic switch tube Q3 and the first end of the first resistor R26 are both connected to the standard voltage VDD_3V3. The second end of the first electronic switch tube Q3 is connected to the second end of the first resistor R26, and the second end of the first electronic switch tube Q3 is also connected to the positive pole of the first on - off diode D5. The control terminal of the first electronic switch tube Q3 is connected to the first end of the second electronic switch tube Q1. The second end of the second electronic switch tube Q1 is grounded. The control terminal of the second electronic switch tube Q1 is connected to the positive pole of the first on - off diode D5, and the control terminal of the second electronic switch tube Q1 is also used to connect to the acquisition terminal KEY_DET of the passive switch central controller. The negative pole of the first on - off diode D5 is connected to the power supply line VOUT_28V0 of the rear - end power - consuming device. In this embodiment, after the rear - end power - consuming device is normally powered off, the acquisition terminal of the passive switch acquisition module 100 acquires the switch signal of the power supply line VOUT_28V0 of the rear - end power - consuming device to determine the re - power - on state of the rear - end power - consuming device. Specifically, at this time, both the first electronic switch tube Q3 and the second electronic switch tube Q1 change from the conducting state to the non - conducting state, so that the acquisition terminal KEY_DET of the passive switch central controller changes from a high level to a low level. Through the potential change of the acquisition terminal KEY_DET of the passive switch central controller, it is convenient for the passive on - control module 200 to change from the off state to the on state. Just by transmitting the switch signal through the power supply line VOUT_28V0 of the rear - end power - consuming device, the connection between the front - end power - supply device and the rear - end power - consuming device is realized, and the rapid power - on rate of the rear - end power - consuming device is improved.

[0035] When the power consumption device at the back end is normally powered off, the power consumption device at the back end of the main power supply circuit is not in use. The power supply line VOUT_28V0 of the back-end power consumption device is in a floating state, and the on-off relay in the passive connection control module 200 is disconnected. The first electronic switch tube Q3 and the second electronic switch tube Q1 are in a conducting state. The power supply line VOUT_28V0 of the back-end power consumption device is provided by the first electronic switch tube Q3, the fourth resistor R24, and the first on-off diode D5. The voltage is about 3.3V, and it is a relatively large current to prevent the weak current of the back-end power consumption device from causing misoperation of the passive on-off acquisition module 100, and to provide a detection voltage for the power consumption device at the back end of the main circuit, so that the voltage at the acquisition end KEY_DET of the passive on-off central controller is also about 3.3V, thus making the acquisition end KEY_DET of the passive on-off central controller at a high level. When the back-end power consumption device needs to be powered on again, the power consumption device at the back end of the main circuit needs to be provided with current by the passive on-off acquisition module 100. At this time, the first electronic switch tube Q3 and the second electronic switch tube Q1 are in a cut-off state. The power supply line VOUT_28V0 of the back-end power consumption device provides a very weak current through the first resistor R26 and the first on-off diode D5 from the standard voltage VDD_3V3, which is not enough to support the power supply of the power consumption device at the back end of the main circuit, thus pulling down the power supply line VOUT_28V of the back-end power consumption device. At this time, the acquisition end KEY_DET of the passive on-off central controller is also pulled down, completing the detection that the power consumption device at the back end of the main circuit is to be used. In this way, the power-on switch signal is transmitted to the passive on-off central controller through the power supply line VOUT_28V0 of the back-end power consumption device, so as to realize that the back-end power consumption device triggers the power-on through the button in the case of no power supply, without manual reset, which is convenient for quickly turning on the power.

[0036] In another embodiment, the passive power-on switch also includes an anti-spark protection module 300. Please refer to Figure 3, the anti-spark protection module 300 includes an anti-spark protection comparator U3-A, an anti-spark detection resistor R3, a positive terminal input resistor R14, a first inverting amplification resistor R15, and a second inverting amplification resistor R16. The first end of the anti-spark detection resistor R3 is used to connect to the power ground wire PGND of the rear-end electrical device. The first end of the anti-spark detection resistor R3 is also connected to the first end of the positive terminal input resistor R14. The second end of the positive terminal input resistor R14 is connected to the non-inverting input terminal of the anti-spark protection comparator U3-A. The second end of the anti-spark detection resistor R3 is connected to the first end of the first inverting amplification resistor R15 and grounded. The second end of the anti-spark detection resistor R3 is connected to the inverting input terminal of the anti-spark protection comparator U3-A. The second end of the anti-spark detection resistor R3 is also connected to the output terminal of the anti-spark protection comparator U3-A through the second inverting amplification resistor R16. The output terminal OC of the anti-spark protection comparator U3-A is connected to the anti-spark sampling terminal of the passive on-off central controller. The anti-spark output terminal of the passive on-off central controller is used to control the on-off of the anti-spark control module. When a short circuit or overcurrent occurs in the rear-end electrical device, the current passing through the power ground wire of the rear-end electrical device is too large, causing the voltage difference across the anti-spark detection resistor R3 to increase. As a result, the non-inverting comparison input voltage of the anti-spark protection comparator U3-A is much greater than the inverting comparison input voltage, and the voltage at the output terminal of the anti-spark protection comparator U3-A changes. For example, at this time, the voltage at the output terminal of the anti-spark protection comparator U3-A changes from a low level to a high level. At this time, the voltage detected by the anti-spark sampling terminal of the passive on-off central controller changes synchronously. By sampling the voltage change, it is convenient to output a signal to control the on-off of the anti-spark control module. Specifically, at this time, the anti-spark output terminal PWR_ENB of the passive on-off central controller outputs a signal to disconnect the anti-spark control module, so as to timely disconnect the power output and prevent sparking, effectively improving the use safety of the rear-end electrical device.

[0037] In one embodiment, the first electronic switch tube Q3 is a P-type MOS tube. The first end of the first electronic switch tube Q3 is the drain of the P-type MOS tube. The second end of the first electronic switch tube Q3 is the source of the P-type MOS tube. The control end of the first electronic switch tube Q3 is the gate of the P-type MOS tube. The second electronic switch tube Q1 is an NPN-type triode. The first end of the second electronic switch tube Q1 is the collector of the NPN-type triode. The second end of the second electronic switch tube Q1 is the emitter of the NPN-type triode. The control end of the second electronic switch tube Q1 is the base of the NPN-type triode.

[0038] Further, please refer to Figure 2, the passive on-off acquisition module 100 further includes a second resistor R1 and a third resistor R27. The control terminal of the second electronic switch tube Q1 is grounded through the second resistor R1. The control terminal of the second electronic switch tube Q1 is also connected to the first end of the third resistor R27. The second end of the third resistor R27 is connected to the positive electrode of the first on-off diode D5. In this embodiment, the second resistor R1 serves as the fast-conduction resistor of the second electronic switch tube Q1. Specifically, the second resistor R1 is connected in parallel between the control terminal and the second terminal of the second electronic switch tube Q1. The second resistor R1 provides a fast channel for the conduction between the control terminal and the second terminal of the second electronic switch tube Q1, making the on-off of the second electronic switch tube Q1 faster. The third resistor R27 is connected in series with the second resistor R1 to form a voltage-dividing circuit at the control terminal of the second electronic switch tube Q1. By adjusting the resistance ratio of the second resistor R1 and the third resistor R27, it is convenient to adjust the on-off voltage of the second electronic switch tube Q1, enabling more compatible models for the second electronic switch tube Q1.

[0039] In one embodiment, please refer to Figure 2 , the passive on-off acquisition module 100 further includes a fourth resistor R24. The second terminal of the first electronic switch tube Q3 is connected to the first end of the fourth resistor R24. The second end of the fourth resistor R24 is connected to the positive electrode of the first on-off diode D5. In this embodiment, the fourth resistor R24 is connected in series to the second terminal of the first electronic switch tube Q3. The fourth resistor R24 serves as the conduction current-limiting resistor of the first electronic switch tube Q3, restricting the current flowing through the first electronic switch tube Q3 when the first electronic switch tube Q3 is conducting, to avoid the situation where the conduction current of the first electronic switch tube Q3 is too large, ensuring the normal operation of the first electronic switch tube Q3.

[0040] In one embodiment, please refer to Figure 2 , the passive on-off acquisition module 100 further includes a fifth resistor R25. The first terminal of the first electronic switch tube Q3 is connected to the first end of the fifth resistor R25. The second end of the fifth resistor R25 is connected to the first terminal of the second electronic switch tube Q1. In this embodiment, the fifth resistor R25 is connected to the first terminal of the first electronic switch tube Q3 and the first terminal of the second electronic switch tube Q1 respectively, such that the fifth resistor R25 is connected in parallel between the first terminal and the control terminal of the first electronic switch tube Q3. The fifth resistor R25 serves as the fast-conduction resistor between the first terminal and the control terminal of the first electronic switch tube Q3, providing sufficient conduction bias voltage for the first electronic switch tube Q3, making the conduction of the first electronic switch tube Q3 faster.

[0041] In one embodiment, please refer to Figure 3 , the passive on-off acquisition module 100 includes a third electronic switch tube Q2, a sixth resistor R3, and a second on-off diode D1. The first end of the sixth resistor R3 and the control end of the first end of the third electronic switch tube Q2 are both connected to the standard voltage VDD_3V3. The second end of the sixth resistor R3 is connected to the first end of the third electronic switch tube Q2. The first end of the third electronic switch tube Q2 is used to connect to the acquisition end KEY_DET of the passive on-off central controller. The second end of the third electronic switch tube Q2 is connected to the positive electrode of the second on-off diode D1, and the negative electrode of the second on-off diode D1 is connected to the power supply line VOUT_28V0 of the rear-end electrical device. In this embodiment, the third electronic switch tube Q2 serves as the acquisition tube for the power-on switch signal on the power supply line VOUT_28V0 of the rear-end electrical device, and the sixth resistor R3 is the pull-up resistor for the first end of the third electronic switch tube Q2.

[0042] When the rear-end electrical device is normally powered off and the rear-end electrical device in the power supply main circuit is not in use, the power supply line VOUT_28V0 of the rear-end electrical device is in a floating state, and the on-off relay K1 in the passive on-off control module 200 is disconnected. The third electronic switch tube Q2 is in a conducting state. The power supply line VOUT_28V of the rear-end electrical device is provided through the sixth resistor R3, the third electronic switch tube Q2, and the second on-off diode D1, and the voltage is about 3.3V. The voltage of the acquisition end KEY_DET of the passive on-off central controller is also about 3.3V. When the rear-end electrical device needs to be powered on again, the rear-end electrical device in the main circuit needs to be supplied with current by the passive on-off acquisition module 100. By selecting a suitable third electronic switch tube Q2 (JFET), since the third electronic switch tube Q2 is in a constant current state, this current is not sufficient to support the power supply of the rear-end electrical device in the main circuit, thereby pulling down the power supply line VOUT_28V of the rear-end electrical device. At this time, the acquisition end KEY_DET of the passive on-off central controller is also pulled down, completing the detection for the use of the rear-end electrical device in the main circuit. In this way, the power-on switch signal is transmitted to the passive on-off central controller through the power supply line VOUT_28V0 of the rear-end electrical device, so as to realize that the rear-end electrical device can trigger the power-on through a button without power supply, without manual reset, and is convenient for quickly turning on the power.

[0043] In one embodiment, the third electronic switch tube Q2 is an N-channel junction field effect transistor. The first end of the third electronic switch tube Q2 is the drain of the N-channel junction field effect transistor, the second end of the third electronic switch tube Q2 is the source of the N-channel junction field effect transistor, and the control end of the third electronic switch tube Q2 is the gate of the N-channel junction field effect transistor.

[0044] In one embodiment, please refer toFigure 4 The passive turn-on control module 200 includes a switch relay K1 and a fourth electronic switch tube Q6. The first end of the switch relay K1 is connected to the power supply line VIN_28V of the front-end power supply device, and the second end of the switch relay K1 is connected to the power supply line VOUT_28V0 of the rear-end power-consuming device. The first end of the fourth electronic switch tube Q6 is connected to the control end of the switch relay K1, the second end of the fourth electronic switch tube Q6 is grounded, and the control end of the fourth electronic switch tube Q6 is used to connect to the turn-on / off control output end of the passive turn-on / off central controller. In this embodiment, both the first end and the second end of the switch relay K1 are connected to the power supply line. Specifically, the power supply line VIN_28V of the front-end power supply device is connected to the first end of the switch relay K1, and the power supply line VOUT_28V0 of the rear-end power-consuming device is connected to the second end of the switch relay K1. The switch relay K1 serves as the power supply controller of the rear-end power-consuming device. The fourth electronic switch tube Q6 serves as the turn-on / off control tube of the switch relay K1. When the rear-end power-consuming device needs to be powered on again, the power-on switch signal of the rear-end power-consuming device is collected through the power supply line VOUT_28V0 of the rear-end power-consuming device. At this time, the acquisition end KEY_DET of the passive turn-on / off central controller is at a low level. By collecting the potential state change of the acquisition end KEY_DET of the passive turn-on / off central controller from a high level to a low level, it is convenient for the voltage change of the turn-on / off control output end of the passive turn-on / off central controller, so as to change the fourth electronic switch tube Q6 from off to on, and make the switch relay K1 synchronously change from off to on. In this way, the power-on switch signal is transmitted to the passive turn-on / off acquisition module 100 through the power supply line VOUT_28V0 of the rear-end power-consuming device, so as to realize that the rear-end power-consuming device triggers the power-on through the button in the case of no power supply, without manual reset, which is convenient for quickly turning on the power.

[0045] In one embodiment, the fourth electronic switch tube Q6 is an NPN-type triode. The first end of the fourth electronic switch tube Q6 is the collector of the NPN-type triode, the second end of the fourth electronic switch tube Q6 is the emitter of the NPN-type triode, and the control end of the fourth electronic switch tube Q6 is the base of the NPN-type triode.

[0046] In another embodiment, a button switch is also connected in series on the power supply line of the rear-end power-consuming device connected to the second end of the switch relay. For example, a button switch for turning on the drive motor of the intelligent sofa is used to generate a power-on switch signal by triggering the button switch, so that the power-on switch signal is transmitted to the passive turn-on / off acquisition module through the power supply line.

[0047] In one embodiment, the passive power-on power switch is connected as an independent product between the power adapter and the backend electrical device.

[0048] In another embodiment, referring to Figure 6 , the passive switch acquisition module 100 includes a fifth electronic switch tube Q5, a sixth electronic switch tube Q4, a tenth resistor R28, an eleventh resistor R29, and a first anti-backflow diode D3. The first end of the fifth electronic switch tube Q5 is connected to the power supply terminal VDD_3V3 of the passive switch central controller, and the second end of the fifth electronic switch tube Q5 is connected to the acquisition terminal KEY_DET of the passive switch central controller. The power supply terminal VDD_3V3 of the passive switch central controller is connected to the second end of the sixth electronic switch tube Q4, and the first end of the sixth electronic switch tube Q4 is connected to the control end of the fifth electronic switch tube Q5. The power supply terminal VDD_3V3 of the passive switch central controller is also connected to the first end of the tenth resistor R28, the second end of the tenth resistor R28 is respectively connected to the control end of the sixth electronic switch tube Q4 and the first end of the eleventh resistor R29, the second end of the eleventh resistor R29 is respectively connected to the acquisition terminal KEY_DET of the passive switch central controller and the positive electrode of the first anti-backflow diode D3, and the negative electrode of the first anti-backflow diode D3 is used to connect to the power cord VOUT_28V0 of the backend electrical device.

[0049] When the subsequent electrical devices at the back-end start to be powered on normally, the subsequent electrical devices in the main circuit need to obtain current from the passive on-off acquisition module 100. For example, triggered by the power switch button of the electrical device at the back-end, the current on the power line VOUT_28V0 of the electrical device at the back-end is very weak. At this time, the voltage drops across the tenth resistor R28 and the eleventh resistor R29 are close to the 3.3V voltage of the power supply terminal VDD_3V3 of the passive on-off central controller, that is, close to the standard voltage VDD_3V3, causing the fifth electronic switch tube Q5 to turn off and the sixth electronic switch tube Q4 to turn on. That is, for the power line VOUT_28V0 of the electrical device at the back-end, the power supply terminal VDD_3V3 of the passive on-off central controller provides a very weak current through the BE junction of the sixth electronic switch tube Q4, the eleventh resistor R29, and the first anti-backflow diode D3, which is not enough to support the power supply of the electrical device in the main circuit at the back-end. As a result, the power line VOUT_28V0 of the electrical device at the back-end is pulled down, and further the voltage of the acquisition terminal KEY_DET of the passive on-off central controller is pulled down simultaneously. At this time, the acquisition terminal KEY_DET of the passive on-off central controller is at a low level. In this way, the acquisition terminal KEY_DET of the passive on-off central controller changes from a high level to a low level in terms of voltage, which is convenient for turning on the fourth electronic switch tube Q6, and thus turning on the relay switch K1 to start supplying power to the electrical device at the back-end. Among them, the key signal is transmitted to the passive on-off central controller through the power line of the electrical device at the back-end. For example, the key current generated by the on-off key of the drive motor of the intelligent sofa is used to realize the power-on of the electrical device at the back-end by pressing the key in the case of no power supply. Moreover, when the electrical device at the back-end is powered on normally, the fifth electronic switch tube Q5 remains off and the sixth electronic switch tube Q4 remains on, causing the fourth electronic switch tube Q6 to remain on, and thus keeping the relay switch K1 on.

[0050] In another embodiment, the fifth electronic switch tube Q5 is a P-type MOS tube. The first end of the fifth electronic switch tube Q5 is the source electrode of the P-type MOS tube, the second end of the fifth electronic switch tube Q5 is the drain electrode of the P-type MOS tube, and the control end of the fifth electronic switch tube Q5 is the gate electrode of the P-type MOS tube.

[0051] In another embodiment, the sixth electronic switch tube Q4 is a PNP triode. The first end of the sixth electronic switch tube Q4 is the collector of the PNP triode, the second end of the sixth electronic switch tube Q4 is the emitter of the PNP triode, and the control end of the sixth electronic switch tube Q4 is the base of the PNP triode.

[0052] In one of the embodiments, please refer to Figure 6, the passive on-off acquisition module 100 further includes a twelfth resistor R30. The control end of the fifth electronic switch tube Q5 is connected to the first end of the twelfth resistor R30, and the second end of the twelfth resistor R30 is grounded. In this embodiment, the twelfth resistor R30 is connected in series to the first end of the sixth electronic switch tube Q4. Specifically, the first end of the twelfth resistor R30 is respectively connected to the control end of the fifth electronic switch tube Q5 and the first end of the sixth electronic switch tube Q4. The twelfth resistor R30 serves as a pull-up resistor for the first end of the sixth electronic switch tube Q4 to provide a stable static state for the sixth electronic switch tube Q4.

[0053] In one embodiment, please refer to Figure 6 , the passive on-off acquisition module 100 further includes a storage capacitor C6. The first end of the storage capacitor C6 is connected to the second end of the sixth electronic switch tube Q4, and the second end of the storage capacitor C6 is connected to the control end of the fifth electronic switch tube Q5. In this embodiment, the storage capacitor C6 is connected in parallel with the sixth electronic switch tube Q4. Specifically, the storage capacitor C6 is connected in parallel between the first end and the second end of the sixth electronic switch tube Q4, such that the storage capacitor C6 is connected in series with the twelfth resistor R30, facilitating the formation of an RC filter circuit, making the on-off state switching of the sixth electronic switch tube Q4 stable. Moreover, the storage capacitor C6 stores part of the electrical energy during the switching process of the sixth electronic switch tube Q4 to prevent the voltage of the power supply terminal VDD_3V3 of the passive on-off central controller from being pulled down.

[0054] In another embodiment, please refer to Figure 6 , the passive on-off acquisition module 100 further includes a ninth resistor R31. The second end of the fifth electronic switch tube Q5 is connected to the acquisition terminal KEY_DET of the passive on-off central controller through the ninth resistor R31. In this embodiment, the ninth resistor R31 is connected in series between the second end of the fifth electronic switch tube Q5 and the acquisition terminal KEY_DET of the passive on-off central controller. The ninth resistor R31 limits the current flowing into the acquisition terminal KEY_DET of the passive on-off central controller, and can effectively reduce the current impact on the passive on-off central controller while ensuring the accuracy of the sampling voltage, thereby improving the sampling stability of the passive on-off central controller.

[0055] In one embodiment, please refer to Figure 7, the passive on-off acquisition module 100 includes a seventh resistor R5, an eighth resistor R4, and a second anti-backflow diode D2. The power supply terminal VDD_3V3 of the passive on-off central controller is connected to the first end of the eighth resistor R4. The second end of the eighth resistor R4 is connected to the positive electrode of the second anti-backflow diode D2. The first end of the seventh resistor R5 is connected to the acquisition terminal KEY_DET of the passive on-off central controller. The second end of the seventh resistor R5 is connected to the positive electrode of the second anti-backflow diode D2. The negative electrode of the second anti-backflow diode D2 is used to be connected to the power supply line of the subsequent electrical device at the rear end. In this embodiment, the seventh resistor R5 is located between the acquisition terminal KEY_DET of the passive on-off central controller and the power supply terminal of the passive on-off central controller. The seventh resistor R5 serves as a pull-down resistor for the acquisition terminal KEY_DET of the passive on-off central controller. When the subsequent electrical device at the rear end is powered off normally, that is, the power supply line VOUT_28V0 of the subsequent electrical device at the rear end is not powered, at this time, the power supply line of the subsequent electrical device at the rear end is suspended, and the relay switch K1 in the main power supply circuit is disconnected. The power supply line VOUT_28V0 of the subsequent electrical device at the rear end is provided by the eighth resistor R4 and the second anti-backflow diode D2, and the voltage is about 3.3V. The voltage of the detection terminal KEY_DET of the passive on-off central controller is also about 3.3V, so that the acquisition terminal KEY_DET of the passive on-off central controller is at a high level. When the subsequent electrical device at the rear end starts to be powered on normally, the subsequent electrical device at the rear end of the main circuit needs to be supplied with current by the passive on-off acquisition module 100. The power supply terminal VDD_3V3 of the passive on-off central controller supplies current to the subsequent electrical device at the rear end through the eighth resistor R4 and the second anti-backflow diode D2. This current is not sufficient to support the power supply of the subsequent electrical device at the rear end of the main circuit, thereby pulling down the power supply line VOUT_28V0 of the subsequent electrical device at the rear end. At this time, the detection terminal KEY_DET of the passive on-off central controller is also pulled down, completing the detection for the subsequent devices in the main circuit to be used. Among them, the current on the power supply line VOUT_28V0 of the subsequent electrical device at the rear end is very weak. At this time, the voltage drop across the seventh resistor R5 is close to the 3.3V voltage of the power supply terminal VDD_3V3 of the passive on-off central controller, so that the voltage of the acquisition terminal KEY_DET of the passive on-off central controller changes from a high level to a low level, which is convenient for controlling the passive on-off regulation module 200 to conduct through the passive on-off central controller. Specifically, the relay switch K1 conducts to supply power to the subsequent electrical device at the rear end.

[0056] In one embodiment, the present disclosure further relates to a power adapter, which includes a passive on-off central controller and the passive on-off power switch described in any of the above embodiments. The input end of the passive on-off central controller is connected to the acquisition end of the passive on-off acquisition module, and the output end of the passive on-off central controller is connected to the control end of the passive on-off regulation module. In this embodiment, the passive on-off power switch and the power supply part are encapsulated in the power adapter, that is, the passive on-off power switch is integrated in the power adapter. The passive on-off power switch includes a passive on-off acquisition module and a passive on-off regulation module; the power connection end of the passive on-off acquisition module is used to connect to a standard voltage, and the acquisition end of the passive on-off acquisition module is used to connect to the power cord of the rear-end electrical device to acquire the power-on switch signal of the rear-end electrical device; the input end of the passive on-off regulation module is used to connect to the power cord of the front-end power supply device, and the output end of the passive on-off regulation module is used to connect to the power cord of the rear-end electrical device. The passive on-off regulation module is used to conduct when the power-on switch signal of the rear-end electrical device is triggered. After the rear-end electrical device is normally powered off, the acquisition end of the passive on-off acquisition module acquires the switch signal of the power cord of the rear-end electrical device to determine the re-power-on state of the rear-end electrical device. Specifically, at this time, both the first electronic switch tube and the second electronic switch tube change from the conducting state to the off state, so that the acquisition end of the passive on-off central controller changes from a high level to a low level. Through the potential change of the acquisition end of the passive on-off central controller, it is convenient for the passive on-off central controller to control the passive on-off regulation module to change from off to on. Only by transmitting the switch signal through the power cord of the rear-end electrical device, the connection between the front-end power supply device and the rear-end electrical device is realized, and the power-on speed of the rear-end electrical device is improved.

[0057] In another embodiment, the power adapter with the above passive on-off power switch is applied to the control system of the micro-switch for movement. Only the power adapter needs to be replaced with the power supply in the control system, and no other parts need to be changed.

[0058] In one embodiment, the present disclosure also relates to a battery pack, including the passive power-on switch described in any of the above embodiments. In this embodiment, the passive power-on switch is integrated in the battery pack. The passive power-on switch includes a passive switch acquisition module and a passive power-on regulation module. The power connection terminal of the passive switch acquisition module is used to connect to a standard voltage, and the acquisition terminal of the passive switch acquisition module is used to connect to the power line of the rear-end electrical device to acquire the power-on switch signal of the rear-end electrical device. The input terminal of the passive power-on regulation module is used to connect to the power line of the front-end power supply device, and the output terminal of the passive power-on regulation module is used to connect to the power line of the rear-end electrical device. The passive power-on regulation module is used to conduct when triggered by the power-on switch signal of the rear-end electrical device. After the rear-end electrical device is normally powered off, the acquisition terminal of the passive switch acquisition module acquires the switch signal of the power line of the rear-end electrical device to determine the re-power-on state of the rear-end electrical device. Specifically, at this time, both the first electronic switch tube and the second electronic switch tube change from the conducting state to the off state, so that the acquisition terminal of the passive switch central controller changes from a high level to a low level. Through the potential change of the acquisition terminal of the passive switch central controller, it is convenient for the passive switch central controller to control the passive power-on regulation module to change from the off state to the conducting state. Only through the transmission of the switch signal by the power line of the rear-end electrical device, the connection between the front-end power supply device and the rear-end electrical device is realized, and the rapid power-on rate of the rear-end electrical device is improved.

[0059] In one embodiment, the present disclosure also relates to a smart sofa, including the passive power-on switch described in any of the above embodiments. The passive power-on switch includes a passive switch acquisition module and a passive power-on regulation module. The power connection terminal of the passive switch acquisition module is used to connect to a standard voltage, and the acquisition terminal of the passive switch acquisition module is used to connect to the power line of the rear-end electrical device to acquire the power-on switch signal of the rear-end electrical device. The input terminal of the passive power-on regulation module is used to connect to the power line of the front-end power supply device, and the output terminal of the passive power-on regulation module is used to connect to the power line of the rear-end electrical device. The passive power-on regulation module is used to conduct when triggered by the power-on switch signal of the rear-end electrical device. After the rear-end electrical device is normally powered off, the acquisition terminal of the passive switch acquisition module acquires the switch signal of the power line of the rear-end electrical device to determine the re-power-on state of the rear-end electrical device. Specifically, at this time, both the first electronic switch tube and the second electronic switch tube change from the conducting state to the off state, so that the acquisition terminal of the passive switch central controller changes from a high level to a low level. Through the potential change of the acquisition terminal of the passive switch central controller, it is convenient for the passive switch central controller to control the passive power-on regulation module to change from the off state to the conducting state. Only through the transmission of the switch signal by the power line of the rear-end electrical device, the connection between the front-end power supply device and the rear-end electrical device is realized, and the rapid power-on rate of the rear-end electrical device is improved.

[0060] The above-described embodiments merely represent several implementation manners of the present disclosure. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several variations and improvements can still be made, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. A passive power switch, characterized in that: include: A passive on-off acquisition module, wherein the power connection terminal of the passive on-off acquisition module is used to connect to a standard voltage, and the acquisition terminal of the passive on-off acquisition module is used to connect to a power line of a back-end electrical device to acquire a power on / off switch signal of the back-end electrical device; A passive on-control module, wherein the input end of the passive on-control module is used to connect to the power line of the front-end power supply device, and the output end of the passive on-control module is used to connect to the power line of the back-end power-consuming device. The passive on-control module is used to be turned on when the power on switch signal of the back-end power-consuming device is triggered.

2. The passive power switch according to claim 1, characterized in that: The passive on-off acquisition module includes a first electronic switch tube, a second electronic switch tube, a first resistor, a second resistor, a third resistor and a first on-off diode. The first end of the first electronic switch tube and the first end of the first resistor are both connected to a standard voltage, the second end of the first electronic switch tube is connected to the second end of the first resistor, the second end of the first electronic switch tube is also connected to the positive electrode of the first on-off diode, the control end of the first electronic switch tube is connected to the first end of the second electronic switch tube, the second end of the second electronic switch tube is grounded, the control end of the second electronic switch tube is connected to the positive electrode of the first on-off diode, the control end of the second electronic switch tube is also used to connect to the acquisition end of the passive on-off central controller, and the negative electrode of the first on-off diode is connected to the power line of the rear-end electrical device.

3. The passive power switch according to claim 2, characterized in that: The passive on-off acquisition module also includes a second resistor and a third resistor. The control end of the second electronic switch tube is grounded through the second resistor. The control end of the second electronic switch tube is also connected to the first end of the third resistor. The second end of the third resistor is connected to the positive electrode of the first on-off diode.

4. The passive power switch according to claim 1, characterized in that: The passive on-off acquisition module includes a third electronic switch tube, a sixth resistor and a second on-off diode. The first end of the sixth resistor and the first end control end of the third electronic switch tube are both connected to a standard voltage. The second end of the sixth resistor is connected to the first end of the third electronic switch tube. The first end of the third electronic switch tube is used to connect to the acquisition end of the passive on-off central controller. The second end of the third electronic switch tube is connected to the positive electrode of the second on-off diode. The negative electrode of the second on-off diode is connected to the power line of the rear-end electrical device.

5. The passive power switch according to claim 1, characterized in that: The passive on-off control module includes an on-off relay and a fourth electronic switch tube. The first end of the on-off relay is connected to the power line of the front-end power supply device, the second end of the on-off relay is connected to the power line of the back-end power-consuming device, the first end of the fourth electronic switch tube is connected to the control end of the on-off relay, the second end of the fourth electronic switch tube is grounded, and the control end of the fourth electronic switch tube is used to connect to the on-off control output end of the passive on-off central controller.

6. The passive power switch according to claim 1, characterized in that: The passive on-off acquisition module includes a fifth electronic switch tube, a sixth electronic switch tube, a tenth resistor, an eleventh resistor and a first anti-flooding diode. The first end of the fifth electronic switch tube is connected to the power supply end of the passive on-off central controller, and the second end of the fifth electronic switch tube is connected to the acquisition end of the passive on-off central controller; the power supply end of the passive on-off central controller is connected to the second end of the sixth electronic switch tube, and the first end of the sixth electronic switch tube is connected to the control end of the fifth electronic switch tube; the power supply end of the passive on-off central controller is also connected to the first end of the tenth resistor, the second end of the tenth resistor is respectively connected to the control end of the sixth electronic switch tube and the first end of the eleventh resistor, the second end of the eleventh resistor is respectively connected to the acquisition end of the passive on-off central controller and the positive electrode of the first anti-flooding diode, and the negative electrode of the first anti-flooding diode is used to be connected to the power line of the rear-end electrical device.

7. The passive power switch according to claim 1, characterized in that: The passive on-off acquisition module includes a seventh resistor, an eighth resistor and a second anti-flooding diode. The power supply end of the passive on-off central controller is connected to the first end of the eighth resistor, the second end of the eighth resistor is connected to the positive electrode of the second anti-flooding diode, the first end of the seventh resistor is connected to the acquisition end of the passive on-off central controller, the second end of the seventh resistor is connected to the positive electrode of the second anti-flooding diode, and the negative electrode of the second anti-flooding diode is used to be connected to the power line of the back-end electrical device.

8. A power adapter, characterized in that: It comprises a passive on-off central controller and a passive power on / off device as described in any one of claims 1 to 7, wherein the input end of the passive on-off central controller is connected to the collection end of the passive on-off collection module, and the output end of the passive on-off central controller is connected to the control end of the passive on / off regulation module.

9. A battery pack, characterized in that: The invention comprises the passive power on / off switch as claimed in any one of claims 1 to 7.

10. A smart sofa, characterized in that: The invention comprises the passive power on / off switch as claimed in any one of claims 1 to 7.

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