CN212462872U

CN212462872U - Power supply equipment

Info

Publication number: CN212462872U
Application number: CN202020574866.4U
Authority: CN
Inventors: 左传金; 王娜娜; 郭宏钊
Original assignee: Haier Smart Home Co Ltd; Qingdao Haier Multimedia Co Ltd
Current assignee: Haier Smart Home Co Ltd; Qingdao Haier Multimedia Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-02-02
Anticipated expiration: 2030-04-17

Abstract

The application relates to the technical field of power supply for equipment and discloses power supply equipment. The power supply equipment comprises a micro-control unit, a standby circuit and a rechargeable battery, wherein the power supply output end of the rechargeable battery is connected with the power supply end of the micro-control unit and is connected with the standby circuit in parallel; the current output end of the photovoltaic power generation device is electrically connected with the input end of the rechargeable battery and charges the rechargeable battery; and the output end of the relay is connected with the input end of the standby circuit, the switching end of the relay is connected with the micro control unit, and the input end of the relay is configured to be connected with an external power supply. The photovoltaic power generation device converts light energy into electric energy, the electric energy is stored in the rechargeable battery, and the rechargeable battery supplies power to the micro-control unit to maintain the standby state of the equipment; when the rechargeable battery supplies power to the micro control unit, the standby circuit and the external power supply circuit are disconnected through the relay, the standby power consumption of the standby circuit is eliminated, the electric energy of a power grid is saved, and the problem that the standby mode can be maintained only by the power grid is solved.

Description

Power supply equipment

Technical Field

The present application relates to the field of powering devices, for example to a power supply device.

Background

At present, household appliances such as televisions and the like on the market are generally provided with a standby mode, and when a user uses a remote controller to shut down, the household appliances enter the standby mode to save energy consumption. The power consumption in the standby state is relatively small, for example, the power consumption of a television set is not more than 0.5W to meet the latest national standard requirement. The standby mode of the tv generally reduces the standby power consumption by turning off various functional modules and leaving only a Micro Controller Unit (MCU) with a standby wake-up function to operate, but the MCU also needs to consume power to operate. In addition, a method for reducing standby power consumption is also available in the market, namely a Farad-level super capacitor is used for storing energy, the MCU is powered when in standby, a power charging circuit is turned on every dozens of seconds to charge a capacitor instantly through large current, and the loss of continuous work of the switching power supply is reduced.

By the way that the switching power supply standby circuit supplies power to the MCU, even if the MCU can achieve very small standby power consumption, the working loss of the switching power supply standby circuit is not small, and the power consumption control method is difficult to further reduce the standby power consumption; in addition, by using the mode of matching the super capacitor energy storage with the intermittent charging circuit, the standby power consumption can be further reduced. Although the super capacitor does not need to be externally supplied with energy when discharging, the super capacitor needs to be charged instantaneously to draw electric energy from the power grid.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art: the existing household appliances need to maintain a standby mode through power supply of a power grid.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a power supply device, which is used for solving the technical problem that household appliances depend on power grid power supply to maintain a standby mode.

In some embodiments, the power supply device comprises a micro-control unit, a standby circuit connected to a power supply terminal of the micro-control unit, a rechargeable battery having a power supply output connected to the power supply terminal of the micro-control unit and connected in parallel to the standby circuit; the current output end of the photovoltaic power generation device is electrically connected with the input end of the rechargeable battery and charges the rechargeable battery; the output end of the relay is connected with the input end of the standby circuit, the switching end of the relay is connected with the micro control unit, and the input end of the relay is configured to be connected with an external power supply; the micro control unit controls the on-off between the output end of the relay and the input end of the relay through the switching end of the relay.

The power supply device provided by the embodiment of the disclosure can realize the following technical effects:

the photovoltaic power generation device converts light energy into electric energy, the electric energy is stored in the rechargeable battery, and the rechargeable battery supplies power to the micro-control unit to maintain the standby state of the equipment; when the rechargeable battery supplies power to the micro control unit, the standby circuit and the external power supply circuit are disconnected through the relay, the standby power consumption of the standby circuit is eliminated, the electric energy of a power grid is saved, and the problem that the standby mode can be maintained only by the power grid is solved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic diagram of a power supply apparatus provided by an embodiment of the present disclosure;

fig. 2 is another schematic diagram of a power supply apparatus provided by an embodiment of the present disclosure;

fig. 3 is another schematic diagram of a power supply device provided by an embodiment of the present disclosure.

Reference numerals:

10: a micro control unit; 20: a standby circuit; 30: a rechargeable battery; 40: a photovoltaic power generation device; 41: a photovoltaic power generation thin film group; 50: a relay; 60: a control circuit; 70: a first diode; 80: a second diode; 90: a current on-off switch; 100: connecting an external power supply; 110: a housing.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

As shown in fig. 1, the present embodiment provides a power supply device, which includes a micro-control unit 10, a standby circuit 20 connected to a power supply end of the micro-control unit, and a rechargeable battery 30, a power supply output end of which is connected to the power supply end of the micro-control unit 10 and is connected in parallel to the standby circuit 20; a photovoltaic power generation device 40, the current output end of which is electrically connected with the input end of the rechargeable battery 30 and charges the rechargeable battery 30; the output end of the relay 50 is connected with the input end of the standby circuit 20, the switching end is connected with the micro control unit 10, and the input end is configured to be connected with an external power supply 100; the micro control unit 10 controls the on/off between the output end of the relay and the input end of the relay through the switching end of the relay.

By adopting the embodiment, the photovoltaic power generation device converts the light energy into the electric energy, the electric energy is stored in the rechargeable battery, and the rechargeable battery supplies power to the micro-control unit to maintain the standby state of the equipment; when the rechargeable battery supplies power to the micro control unit, the standby circuit and the external power supply circuit are disconnected through the relay, the standby power consumption of the standby circuit is eliminated, the electric energy of a power grid is saved, and the problem that the standby mode can be maintained only by the power grid is solved.

In the embodiment of the present disclosure, when the device is a television, the micro control unit 10 uses a low power consumption micro control unit to receive a command of a remote control or a key, and start or close a power supply of the television. The standby circuit 20 supplies power to the power source terminal of the micro-control unit 10 by connecting the external power source 100, and maintains the operating state of the micro-control unit. The external power source 100 may be a commercial power or other power supply equipment.

Photovoltaic power generation is a technology of directly converting light energy into electric energy by using the photovoltaic effect of a semiconductor interface. The photovoltaic power generation device 40 converts the collected light energy into electric energy and transmits the electric energy to the rechargeable battery 30 for storage. The photovoltaic power generation device 40 preferably uses a flexible film with strong power generation capability under weak light to meet the indoor environment, which is helpful for prolonging the collection time of the photovoltaic power generation device, so that more light energy can be collected.

The rechargeable battery 30 stores the electric energy converted by the photovoltaic power generation device 40 and then supplies power to the micro control unit 10 that is on standby during the day or night. The capacity of the rechargeable battery 30 can be selected according to the power consumption of the micro control unit 10, for example: when the micro control unit needs 3.3V and 10mA currents, the power consumption of the micro control unit is calculated according to the standby time of 10 hours at night, and if the theoretical power consumption of the micro control unit is 330mWh, 100mAh and 3.6V rechargeable batteries are selected. The rechargeable battery 30 may be formed by connecting a plurality of rechargeable batteries in series and parallel.

The rechargeable battery 30 is connected in parallel with the standby circuit 20, and the switching end action of the relay 50 is controlled by the micro control unit 10; when the rechargeable battery 30 supplies power stably, the switching end of the relay 50 acts to disconnect the circuit between the standby circuit 20 and the external power supply 100, and the external power supply 100 cancels the power supply to the standby circuit 20, thereby eliminating the power consumption of the standby circuit 20 and saving energy. The switching terminal of the relay 50 is in a normally closed state by default, that is, the external power supply 100 continuously supplies power to the mcu 10 through the standby circuit 20 to maintain the operating state of the mcu.

Optionally, the power supply output terminal of the rechargeable battery 30 is also connected to the voltage detection terminal of the micro control unit 10. Therefore, the micro control unit can detect the voltage of the power supply output end of the rechargeable battery to ensure that the rechargeable battery can stably supply power, then sends an instruction to control the action of the switching end of the relay, disconnects the circuit between the standby circuit and the external power supply, stops the external power supply from supplying power to the micro control unit through the standby circuit, and further stops the power consumption of the external power supply.

For example: the micro control unit 10 detects the voltage value of the power supply output end of the rechargeable battery 30 through the voltage detection end, and compares the detected voltage value with the preset voltage threshold, when the voltage value of the power supply output end of the rechargeable battery 30 reaches and is stabilized at the voltage threshold, the micro control unit 10 controls the switching end action of the relay 50, the circuit connection of the input end and the output end of the relay 50 is disconnected, namely, the circuit connection between the standby circuit 20 and the external power supply 100 is disconnected, the standby circuit 20 stops working, the micro control unit 10 is powered by the rechargeable battery 30, and the electric energy of the external power supply 100 is not consumed any more. When the detected voltage value is smaller than the voltage threshold, the mcu 10 controls the switching terminal of the relay 50 to operate, and the switching terminal is in a closed state, so that the standby circuit 20 is connected to the external power supply 100 to supply power to the mcu 10, thereby ensuring a stable operating state of the mcu 10.

The voltage detection terminal of the micro control unit 10 may detect the voltage of the power supply output terminal of the rechargeable battery 30 through a resistance voltage divider ADC or a voltage sensor or a current sensor.

The specific model of the micro control unit is not limited, and may be, for example, an STM32 series model MCU, or a 51 series model MCU.

Optionally, the power supply apparatus further comprises: a first diode 70 connected in series with the rechargeable battery 30 and with the micro-control unit 10, the anode being connected to the supply output of the rechargeable battery and the cathode being connected to the supply terminal of the micro-control unit. Therefore, when the rechargeable battery is connected with the standby circuit in parallel to supply power to the micro control unit, or the standby circuit supplies power to the micro control unit, the circuit between the rechargeable battery and the micro control unit and the circuit between the standby circuit and the micro control unit are separated through the first diode, and the series connection is prevented.

Wherein the power supply output terminal of the rechargeable battery 30 connected to the voltage detection terminal of the micro control unit 10 is connected to the anode of the first diode 70. This helps to prevent detection inaccuracies.

Optionally, the power supply apparatus further comprises: and a second diode 80 connected in series with the standby circuit 20 and the micro-control unit 10, the anode being connected to the output terminal of the standby circuit and the cathode being connected to the power supply terminal of the micro-control unit. Therefore, when the rechargeable battery is connected with the standby circuit in parallel to supply power to the micro control unit or the rechargeable battery supplies power to the micro control unit, the circuit between the standby circuit and the micro control unit and the circuit between the rechargeable battery and the micro control unit are separated through the second diode, and the series connection is prevented.

Optionally, a second diode 80 is connected in parallel with the first diode 70. In this way, the circuit between the rechargeable battery 30 and the micro control unit 10 and the circuit between the standby circuit 20 and the micro control unit 10 are separated by the first diode 70 and the second diode 80, preventing the two circuits from being connected in series with each other.

Optionally, the power supply apparatus further comprises: and the control circuit 60 is connected in series in the circuits of the photovoltaic power generation device 40 and the rechargeable battery 30, the input end of the control circuit is connected with the current output end of the photovoltaic power generation device 40, and the output end of the control circuit is connected with the input end of the rechargeable battery 30. Therefore, the control circuit controls the charging current output by the photovoltaic power generation device to the rechargeable battery, and the rechargeable battery is prevented from overshooting to cause damage.

The control circuit 60 may change the magnitude of the charging current by controlling the magnitude of the resistance through which the charging current flows; when the amount of electricity stored in the rechargeable battery 30 reaches a maximum value, the control circuit 60 can also disconnect the circuit between the photovoltaic power generation device 40 and the rechargeable battery 30, which helps to protect the rechargeable battery 30.

Herein, the control circuit is not limited, and the control circuit may implement the function of the control circuit by selecting a voltage/current meter of ZK-U15 type.

Optionally, a current on-off switch 90 is connected in series between the photovoltaic power generation device 40 and the control circuit 60. Therefore, the current on-off between the photovoltaic power generation device and the control circuit is cut off through the current on-off switch, and the photovoltaic power generation device is stopped from charging the rechargeable battery.

The current on-off switch 90 is a controllable switch, and includes an automatic mode and a manual mode, and the current on-off switch 90 can be switched on or off by a remote control signal or an instruction of the micro control unit 10. Secondly, the current on/off switch 90 can also be manually closed or opened by the user.

Optionally, the photovoltaic power generation device 40 includes a photovoltaic power generation film member, and/or a photovoltaic power generation panel member. The photovoltaic power generation membrane component is in a membrane shape, can be curled, is light-permeable, can be attached to the surface of power supply equipment, occupies small space, is easy to replace and has high operability; the photovoltaic power generation board component is not easy to damage, and the whole photovoltaic power generation board does not need to be replaced due to easy maintenance when a part of the photovoltaic power generation board component goes wrong.

The photovoltaic power generation device 40 also includes a photovoltaic cable and a transformer. The photovoltaic power generation film component or the photovoltaic power generation plate component converts light energy into low-voltage direct current electric energy, the electric energy passes through the photovoltaic cable to the transformer, and the low-voltage direct current electric energy output by the photovoltaic power generation film component or the photovoltaic power generation plate component is converted into charging electric energy conforming to the rechargeable battery through the transformer, so that the purpose of charging the rechargeable battery is achieved.

Alternatively, the photovoltaic power generation film member includes one photovoltaic power generation film group 41 or a plurality of photovoltaic power generation film groups 41 connected in parallel. Therefore, the collection range of the photovoltaic power generation film component is expanded by the plurality of photovoltaic power generation film groups connected in parallel; on the other hand, when one of the photovoltaic power generation thin film groups is damaged and cannot be used, the other photovoltaic power generation thin film groups can still be normally conducted to continuously charge the rechargeable battery, and the stable output of the current is maintained.

The photovoltaic power generation thin film groups 41 may be connected to the transformer through a plurality of photovoltaic cables, or may be collected into one photovoltaic cable and then connected to the transformer. The photovoltaic power generation thin film group 41 includes one photovoltaic power generation thin film or a plurality of photovoltaic power generation thin films.

Alternatively, the photovoltaic power generation film group 41 is formed by connecting a plurality of photovoltaic power generation films in series. This helps to reduce parallel lines. For example: after a plurality of photovoltaic power generation films in the same position are connected in series, a photovoltaic cable can be used for outputting electric energy, the appearance is neat, and the photovoltaic cable is convenient to store.

The specific type of the photovoltaic power generation film is not limited herein, and may be WARMSPACE/Winbal WS-USPV360, for example.

Optionally, the power supply apparatus further comprises: the housing 110 and the photovoltaic thin film set 41 are disposed on an outer side wall of the housing 110, and the micro control unit 10, the standby circuit 20, the rechargeable battery 30 and the relay 50 are disposed in the housing 110. Like this, photovoltaic power generation thin film group 41 sets up in the lateral wall of casing 110, and can design according to the structure of the lateral wall of casing 110 for photovoltaic power generation thin film group 41 fuses together with the lateral wall of casing 110, and is pleasing to the eye clean and tidy. Secondly, little the control unit, stand-by circuit, rechargeable battery, relay all locate in the casing, help accomodating, the outward appearance is clean and tidy. In addition, photovoltaic cable and transformer set up in casing 110, and are neat and artistic.

In addition, the selected elements of the photovoltaic thin film group 41 are related to the power consumption of the micro control unit 10. Wherein, the selected elements of the photovoltaic power generation thin film group 41 include size and/or luminous efficiency. For example: when the standby of the micro control unit needs 3.3V and 10mA currents, a photovoltaic power generation thin film group with the area of 100 square centimeters can be selected.

When the device is a television, the photovoltaic power generation film assembly 41 may be disposed on an outer side wall of the side of the housing 110 facing the user, and may be located at the bottom of the outer side wall of the housing 110, as shown in fig. 2; or may be located on the side of the outer sidewall of the housing 110 as shown in fig. 3.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A power supply apparatus comprising a micro-control unit, a standby circuit connected to a power supply terminal of the micro-control unit, characterized by further comprising:

the power supply output end of the rechargeable battery is connected with the power supply end of the micro-control unit and is connected with the standby circuit in parallel;

the current output end of the photovoltaic power generation device is electrically connected with the input end of the rechargeable battery and charges the rechargeable battery;

the output end of the relay is connected with the input end of the standby circuit, the switching end of the relay is connected with the micro control unit, and the input end of the relay is configured to be connected with an external power supply;

the micro control unit controls the on-off between the output end of the relay and the input end of the relay through the switching end of the relay.

2. The power supply device according to claim 1, wherein the power supply output terminal of the rechargeable battery is further connected to the voltage detection terminal of the micro control unit.

3. The power supply apparatus according to claim 1, further comprising:

and the first diode is connected with the rechargeable battery and the micro control unit in series, the anode of the first diode is connected with the power supply output end of the rechargeable battery, and the cathode of the first diode is connected with the power supply end of the micro control unit.

4. The power supply apparatus according to claim 1, further comprising:

and the second diode is connected with the standby circuit and the micro control unit in series, the anode of the second diode is connected with the output end of the standby circuit, and the cathode of the second diode is connected with the power supply end of the micro control unit.

5. The power supply apparatus according to claim 1, further comprising:

and the control circuit is connected in series in the circuits of the photovoltaic power generation device and the rechargeable battery, the input end of the control circuit is connected with the current output end of the photovoltaic power generation device, and the output end of the control circuit is connected with the input end of the rechargeable battery.

6. The power supply device according to claim 5, wherein a current on-off switch is connected in series between the photovoltaic power generation device and the control circuit.

7. The power supply apparatus according to any one of claims 1 to 6, wherein the photovoltaic power generation device comprises a photovoltaic power generation film member, and/or a photovoltaic power generation panel member.

8. The power supply apparatus according to claim 7, wherein the photovoltaic power generation film member includes one photovoltaic power generation film group or a plurality of photovoltaic power generation film groups connected in parallel.

9. The power supply apparatus according to claim 8, wherein the photovoltaic power generation thin film group is formed by connecting a plurality of photovoltaic power generation thin films in series.

10. The power supply apparatus according to claim 9, further comprising:

the photovoltaic power generation film group is arranged on the outer side wall of the shell, and the micro control unit, the standby circuit, the rechargeable battery and the relay are all arranged in the shell.