Intelligent seat power supply system and intelligent seat

Abstract

The intelligent seat power supply system comprises an adapter, a rechargeable battery and a power supply circuit, the power supply circuit comprises a first switching circuit, a second switching circuit and a charging management circuit, an input end of the adapter is connected with an external power supply, and an output end of the adapter is connected with the charging management circuit. The output end of the adapter supplies power to the charging management circuit and electric equipment of the intelligent seat through the first switching circuit, the charging management circuit charges the rechargeable battery, the rechargeable battery supplies power to the electric equipment through the second switching circuit, and the adapter controls on-off of the first switching circuit and the second switching circuit. When the adapter outputs voltage, the first switching circuit is connected, and the second switching circuit is disconnected, and when the adapter does not output voltage, the first switching circuit is disconnected, and the second switching circuit is connected. According to the utility model, seamless automatic switching of the intelligent seat between the rechargeable battery and the external power supply can be realized, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to an intelligent seat power supply system and an intelligent seat. Background Art

[0002] Intelligent seats usually integrate a variety of electronic functions, such as massage components, adjustment components, fans, heating devices, and sensors, etc. These functions require a stable power supply. Most of the existing intelligent seats are powered only by an adapter, and in the case of power failure, the intelligent seat cannot be used continuously, affecting the user experience. Content of the Utility Model

[0003] The purpose of the utility model is to provide an intelligent seat power supply system and an intelligent seat, which take both the adapter and the built-in rechargeable battery into account and can realize the automatic switching between the two.

[0004] The purpose of the utility model is achieved by adopting the following technical solutions:

[0005] In the first aspect of the utility model, an intelligent seat power supply system is provided, which includes an adapter, a rechargeable battery, and a power supply circuit. Among them, the power supply circuit includes a first switch circuit, a second switch circuit, and a charging management circuit. The input end of the adapter is connected to an external power supply, the output end of the adapter supplies power to the charging management circuit and the electrical equipment of the intelligent seat through the first switch circuit, the charging management circuit charges the rechargeable battery, and the rechargeable battery supplies power to the electrical equipment through the second switch circuit. The adapter controls the on-off of the first switch circuit and the second switch circuit, so that when the adapter has an output voltage, the first switch circuit is turned on and the second switch circuit is turned off; when the adapter has no output voltage, the first switch circuit is turned off and the second switch circuit is turned on.

[0006] Preferably, the first switching circuit includes a PMOS transistor Q5, a zener diode D3, a PNP transistor Q6, a zener diode D4, a resistor R22, a resistor R23, a resistor R24, and a resistor R19. Among them, the drain of the PMOS transistor Q5 is connected to the output end of the adapter. The gate of the PMOS transistor Q5 is grounded through the resistor R22. The collector of the PNP transistor Q6 is connected between the gate of the PMOS transistor Q5 and the resistor R22. The emitter of the PNP transistor Q6 is connected to the source of the PMOS transistor Q5. The positive and negative electrodes of the zener diode D3 are respectively connected to the collector and emitter of the PNP transistor Q6. The base of the PNP transistor Q6 is connected to the output end of the adapter through the resistors R23 and R24. The positive electrode of the zener diode D4 is grounded, and the negative electrode of the zener diode D4 is connected between the resistors R23 and R24. One end of the resistor R19 is connected to the source of the PMOS transistor Q5, and the other end of the resistor R19 is connected between the resistors R23 and R24. The source of the PMOS transistor Q5 is also connected to the charging management circuit and the power input terminal of the electrical device.

[0007] Preferably, the second switching circuit includes a PMOS transistor Q3, a PMOS transistor Q4, a zener diode D1, a zener diode D2, a resistor R20, and a resistor R21. Among them, the source of the PMOS transistor Q3 is connected to the positive electrode of the charging battery. The source of the PMOS transistor Q4 is connected to the power input terminal of the electrical device. The drain of the PMOS transistor Q3 is connected to the drain of the PMOS transistor Q4. The positive and negative electrodes of the zener diode D1 are respectively connected to the gate and source of the PMOS transistor Q3. The positive and negative electrodes of the zener diode D2 are respectively connected to the gate and source of the PMOS transistor Q4. The gates of the PMOS transistor Q3 and the PMOS transistor Q4 are both connected to the output end of the adapter through the resistor R20. One end of the resistor R21 is grounded, and the other end of the resistor R21 is connected between the resistor R20 and the gate of the PMOS transistor Q3.

[0008] Preferably, the charging management circuit is IP2363.

[0009] Preferably, an anti-backflow circuit is also connected between the charging management circuit and the electrical device. The anti-backflow circuit includes a Schottky diode D6, a Schottky diode D7, and a zener diode D9. One end of the parallel connection of the Schottky diode D6 and the Schottky diode D7 is connected between the first switching circuit and the charging management circuit. The other end of the parallel connection of the Schottky diode D6 and the Schottky diode D7 is connected between the second switching circuit and the electrical device. The positive electrode of the zener diode D9 is grounded, and the negative electrode of the zener diode D9 is connected between the Schottky diode D6 and the second switching circuit.

[0010] Preferably, the electrical device is one or more of a controller, a heating component, and a motor drive module.

[0011] Preferably, the rechargeable battery is a lithium battery.

[0012] Preferably, the output voltages of the adapter and the rechargeable battery are +12V.

[0013] In a second aspect of the present invention, an intelligent seat is disclosed, which includes the intelligent seat power supply system described in the first aspect of the present invention.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] The present invention supplies power to each electrical device on the intelligent seat through the combination of an adapter and a rechargeable battery. When the external power supply is normal, the external power supply is connected to the adapter to supply power to the electrical device, and the rechargeable battery is charged during this process. When the external power supply is disconnected or the rechargeable battery is in place, the rechargeable battery supplies power to the electrical device, realizing seamless automatic switching between the rechargeable battery and the external power supply for the intelligent seat. Users can use the intelligent seat through the external power supply without waiting for the rechargeable battery to be fully charged, which increases the convenience of use, improves the utilization efficiency of the rechargeable battery, and extends the service life of the rechargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the intelligent seat power supply system provided by the present invention;

[0017] Figure 2 is a schematic structural diagram of the power supply circuit provided by the present invention;

[0018] Figure 3 is a circuit schematic diagram of the charging management circuit provided by the present invention;

[0019] Figure 4 is a circuit schematic diagram of the first switch circuit provided by the present invention;

[0020] Figure 5 is a circuit schematic diagram of the second switch circuit provided by the present invention;

[0021] Figure 6 is a circuit schematic diagram of the anti-backflow circuit provided by the present invention.

[0022] Among them, 100 is an adapter; 200 is a rechargeable battery; 300 is an intelligent seat; 31 is a power supply circuit; 311 is a first switch; 312 is a charging management circuit; 313 is a second switch; 314 is a third switch; 32 is an electrical device; 321 is a controller; 322 is a first motor drive module; 323 is a second motor drive module; 324 is a heating component; 325 is a third motor drive module; 33 is a fan; 34 is a massage motor; 35 is a lumbar support motor. Detailed implementation manners

[0023] Next, in combination with the accompanying drawings and specific implementation manners, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are 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 should not be construed as a limitation to the present application. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically and precisely defined.

[0025] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense. For example, it can be a fixed connection, or can be connected through an intermediate medium, or can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0026] In the description, claims and the above-mentioned drawings of this application, terms such as "first" and "second" are used to distinguish similar objects and do not necessarily describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that comprises a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0027] Embodiment

[0028] Please refer to Figure 1 As shown, an intelligent seat power supply system mainly includes an adapter 100, a rechargeable battery 200, and a power supply circuit 31. Among them, the adapter 100 is used to connect to an external power source such as the mains power. After operations such as voltage transformation, rectification, filtering, and voltage stabilization by the adapter 100, it outputs a voltage that meets the electrical devices 32 in the intelligent seat 300 to supply power to the electrical devices 32. The rechargeable battery 200 can be implemented using a lithium battery and can directly supply power to the electrical devices 32. The output voltages of both the adapter 100 and the lithium battery can be +12V.

[0029] The electrical devices 32 are electronic components in the intelligent seat 300. For example, they include a massage component, an adjustment component, a fan, a heating component, and a controller that controls the actions of these electronic components. Of course, it can also include some active sensors.

[0030] Exemplarily, the electrical devices 32 include a first motor drive module 322 that drives the fan 33 to work, a second motor drive module 323 that drives the massage motor 34 to work, a third motor drive module 325 that drives the lumbar support motor 35 to work, a heating component 324, and a controller 321, etc.

[0031] In order to achieve automatic intelligent seamless switching between the external power source and the rechargeable battery 200, in a preferred embodiment of the present utility model, it can be achieved through the power supply circuit 31 between the adapter 100, the rechargeable battery 200, and the electrical devices 32. On the one hand, when the adapter 100 is connected to the external power source, the power supply circuit 31 supplies power to the electrical devices 32 through the external power source, and at the same time, it also charges the rechargeable battery 200. On the other hand, when the external power source is disconnected, or when the rechargeable battery 200 is in place, it switches to the rechargeable battery 200 to supply power to the electrical devices 32.

[0032] Please refer to Figure 2As shown in the figure, the power supply circuit 31 includes a first switch circuit, a second switch circuit, and a charging management circuit 312. The input end of the adapter 100 is connected to an external power supply, and the output end of the adapter 100 supplies power to the charging management circuit 312 and the electrical devices 32 of the intelligent seat 300 through the first switch circuit. The charging management circuit 312 charges the charging battery 200, and the charging battery 200 supplies power to the electrical devices 32 through the second switch circuit. The adapter 100 controls the on / off of the first switch circuit and the second switch circuit. When the adapter 100 has an output voltage, the first switch circuit is turned on and the second switch circuit is turned off. When the adapter 100 has no output voltage, the first switch circuit is turned off and the second switch circuit is turned on.

[0033] Please refer to Figure 3 As shown in the figure, the charging management circuit 312 can be implemented by using a charging management chip IP2363. The power input end of the charging management chip IP2363 is connected to the output end of the adapter 100, and the charging output end of the charging management chip IP2363 is connected to the positive electrode of the charging battery 200 to charge the charging battery 200. The peripheral circuit of the charging management chip IP2363 can be referred to Figure 3 As shown in the figure, it is a conventional existing circuit and will not be described in detail here.

[0034] Please refer to Figure 4 As shown in the figure, the first switch circuit includes a PMOS transistor Q5 (corresponding to the first switch 311 in Figure 2 ), a zener diode D3, a PNP transistor Q6, a zener diode D4, a resistor R22, a resistor R23, a resistor R24, and a resistor R19. Among them, the drain of the PMOS transistor Q5 is connected to the output end of the adapter 100 (+12V-IN terminal), the gate of the PMOS transistor Q5 is grounded through the resistor R22, the collector of the PNP transistor Q6 is connected between the gate of the PMOS transistor Q5 and the resistor R22, the emitter of the PNP transistor Q6 is connected to the source of the PMOS transistor Q5, the positive and negative electrodes of the zener diode D3 are respectively connected to the collector and emitter of the PNP transistor Q6, the base of the PNP transistor Q6 is connected to the output end of the adapter 100 through the resistors R23 and R24, the positive electrode of the zener diode D4 is grounded, the negative electrode of the zener diode D4 is connected between the resistors R23 and R24, one end of the resistor R19 is connected to the source of the PMOS transistor Q5, the other end of the resistor R19 is connected between the resistors R23 and R24, and the source of the PMOS transistor Q5 is also connected to the power input ends of the charging management circuit 312 and the electrical devices 32.

[0035] Please refer to Figure 5 As shown in the figure, the second switch circuit includes a PMOS transistor Q3 (corresponding to the second switch 313 in Figure 2 ), a PMOS transistor Q4 (corresponding to Figure 2The third switch 314), zener diode D1, zener diode D2, and resistors R20 and R21. Here, the source of PMOS transistor Q3 is connected to the positive electrode of the rechargeable battery 200, the source of PMOS transistor Q4 is connected to the power input terminal of the electrical device 32, the drain of PMOS transistor Q3 is connected to the drain of PMOS transistor Q4, the positive and negative electrodes of zener diode D1 are respectively connected to the gate and source of PMOS transistor Q3, the positive and negative electrodes of zener diode D2 are respectively connected to the gate and source of PMOS transistor Q4, the gates of PMOS transistor Q3 and PMOS transistor Q4 are both connected to the output terminal of the adapter 100 through resistor R20, one end of resistor R21 is grounded, and the other end of resistor R21 is connected between resistor R20 and the gate of PMOS transistor Q3.

[0036] When the adapter 100 is connected to an external power supply, the base of PNP transistor Q6 is at a high level, PNP transistor Q6 is cut off, the gate of PMOS transistor Q5 is pulled down to a low level, PMOS transistor Q5 is turned on, the output terminal of the adapter 100 is directly connected to the charging management circuit 312 and the power input terminal of the electrical device 32 to supply power to the charging management circuit 312 and the electrical device 32. At this time, the gates of PMOS transistor Q3 and PMOS transistor Q4 are both at a high level, PMOS transistor Q3 and PMOS transistor Q4 are both cut off, and the rechargeable battery 200 cannot output voltage to the power supply.

[0037] When the adapter 100 is disconnected from the external power supply, the base of PNP transistor Q6 is at a low level, PNP transistor Q6 is turned on, the gate of PMOS transistor Q5 is pulled up to a high level, PMOS transistor Q5 is cut off, and the adapter 100 is disconnected from the charging management circuit 312 and the electrical device 32. At this time, the gates of PMOS transistor Q3 and PMOS transistor Q4 are both at a low level, PMOS transistor Q3 and PMOS transistor Q4 are both turned on, and the rechargeable battery 200 outputs voltage to the power supply to supply power to the electrical device 32.

[0038] Here, the second switching circuit adopts a combination of the back-to-back second switch 313 and third switch 314, which is used to prevent the output of the external power supply from directly flowing back to the rechargeable battery 200 through the second switching circuit.

[0039] In addition, in order to prevent the output voltage of the rechargeable battery 200 from flowing back to the charging management circuit 312 and the adapter 100 when the rechargeable battery 200 supplies power to the electrical device 32, an anti-backflow circuit can be connected between the charging management circuit 312 and the electrical device 32. Please refer to Figure 6As shown, the anti-backflow circuit includes Schottky diode D6, Schottky diode D7, and zener diode D9. One end of the parallel connection of Schottky diode D6 and Schottky diode D7 is connected between the first switch circuit and the charging management circuit 312, and the other end of the parallel connection of Schottky diode D6 and Schottky diode D7 is connected between the second switch circuit and the electrical device 32. The positive electrode of the zener diode D9 is grounded, and the negative electrode of the zener diode D9 is connected between the Schottky diode D6 and the second switch circuit. Since the voltage drop generated across the Schottky diode is very small, the output of the adapter 100 basically does not affect the power supply to the electrical device 32. Also, due to the unidirectional conduction of the Schottky diode, the output voltage of the rechargeable battery 200 can be prevented from flowing back to the adapter 100 and the charging management circuit 312.

[0040] The seat of the present utility model includes the above-mentioned intelligent seat power supply system. The other structures of the intelligent seat are the same as those in the prior art and will not be described in detail here.

[0041] The above embodiments are only the preferred embodiments of the embodiments of the present utility model, and cannot be used to limit the scope of protection of the embodiments of the present utility model. Any non-substantive changes and substitutions made by those skilled in the art based on the embodiments of the present utility model fall within the scope of protection required by the embodiments of the present utility model.

Claims

1. An intelligent seat power supply system, characterized in that: It includes an adapter, a rechargeable battery and a power supply circuit, wherein the power supply circuit includes a first switch circuit, a second switch circuit and a charging management circuit, the input end of the adapter is connected to an external power supply, the output end of the adapter supplies power to the charging management circuit and the electrical equipment of the smart seat through the first switch circuit, the charging management circuit charges the rechargeable battery, and the rechargeable battery supplies power to the electrical equipment through the second switch circuit, and the adapter controls the on and off of the first switch circuit and the second switch circuit, so that when the adapter has an output voltage, the first switch circuit is turned on and the second switch circuit is turned off, and when the adapter has no output voltage, the first switch circuit is turned off and the second switch circuit is turned on.

2. The intelligent seat power supply system according to claim 1, characterized in that: The first switch circuit includes a PMOS tube Q5, a voltage regulator tube D3, a PNP transistor Q6, a voltage regulator tube D4, a resistor R22, a resistor R23, a resistor R24 ​​and a resistor R19, wherein the drain of the PMOS tube Q5 is connected to the output end of the adapter, the gate of the PMOS tube Q5 is grounded after passing through the resistor R22, the collector of the PNP transistor Q6 is connected between the gate of the PMOS tube Q5 and the resistor R22, the emitter of the PNP transistor Q6 is connected to the source of the PMOS tube Q5, and the positive and negative electrodes of the voltage regulator tube D3 are respectively connected to the The collector and emitter of the PNP transistor Q6 are connected, the base of the PNP transistor Q6 is connected to the output end of the adapter through resistors R23 and R24, the positive electrode of the voltage regulator D4 is grounded, the negative electrode of the voltage regulator D4 is connected between the resistors R23 and R24, one end of the resistor R19 is connected to the source of the PMOS tube Q5, the other end of the resistor R19 is connected between the resistors R23 and R24, and the source of the PMOS tube Q5 is also connected to the charging management circuit and the power input end of the electrical equipment.

3. The intelligent seat power supply system according to claim 1, characterized in that: The second switch circuit includes a PMOS tube Q3, a PMOS tube Q4, a voltage regulator tube D1, a voltage regulator tube D2, and a resistor R20 and a resistor R21, wherein the source of the PMOS tube Q3 is connected to the positive electrode of the rechargeable battery, the source of the PMOS tube Q4 is connected to the power input terminal of the electrical device, the drain of the PMOS tube Q3 is connected to the drain of the PMOS tube Q4, the positive electrode and the negative electrode of the voltage regulator tube D1 are respectively connected to the gate and the source of the PMOS tube Q3, the positive electrode and the negative electrode of the voltage regulator tube D2 are respectively connected to the gate and the source of the PMOS tube Q4, the gate of the PMOS tube Q3 and the gate of the PMOS tube Q4 are both connected to the output terminal of the adapter through the resistor R20, one end of the resistor R21 is grounded, and the other end of the resistor R21 is connected between the resistor R20 and the gate of the PMOS tube Q3.

4. The intelligent seat power supply system according to claim 1, characterized in that: The charging management circuit is IP2363.

5. The intelligent seat power supply system according to any one of claims 1 to 4, characterized in that: An anti-backflow circuit is also connected between the charging management circuit and the electrical equipment. The anti-backflow circuit includes a Schottky diode D6, a Schottky diode D7 and a zener diode D9. One end of the Schottky diode D6 and the Schottky diode D7 connected in parallel is connected between the first switch circuit and the charging management circuit, and the other end of the Schottky diode D6 and the Schottky diode D7 connected in parallel is connected between the second switch circuit and the electrical equipment. The positive electrode of the zener diode D9 is grounded, and the negative electrode of the zener diode D9 is connected between the Schottky diode D6 and the second switch circuit.

6. The intelligent seat power supply system according to any one of claims 1 to 4, characterized in that: The electrical equipment is one or more of a controller, a heating component and a motor drive module.

7. The intelligent seat power supply system according to any one of claims 1 to 4, characterized in that: The rechargeable battery is a lithium battery.

8. The intelligent seat power supply system according to any one of claims 1 to 4, characterized in that: The output voltage of the adapter and the rechargeable battery is +12V.

9. A smart seat, characterized in that: It includes the smart seat power supply system as described in any one of claims 1-8.

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