CN114285128B - Outdoor equipment power supply control circuit, outdoor equipment power supply system and outdoor equipment - Google Patents
Outdoor equipment power supply control circuit, outdoor equipment power supply system and outdoor equipment Download PDFInfo
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- CN114285128B CN114285128B CN202111625044.XA CN202111625044A CN114285128B CN 114285128 B CN114285128 B CN 114285128B CN 202111625044 A CN202111625044 A CN 202111625044A CN 114285128 B CN114285128 B CN 114285128B
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Abstract
The invention discloses an outdoor equipment power supply control circuit, an outdoor equipment power supply system and outdoor equipment, wherein the outdoor equipment comprises an outdoor equipment load, the outdoor equipment power supply control circuit comprises a power input port, a power output port, a system power supply detection control circuit and a system power supply detection control circuit, wherein the power input port is used for being connected with the power supply equipment, the power output port is electrically connected with the outdoor equipment load, the system power supply detection control circuit is respectively connected with the power input port and the power output port, and the system power supply detection control circuit is used for detecting the type of the power supply equipment connected with the power input port and controlling the on/off state between the power input port and the power output port according to the detected type of the power supply equipment. The invention solves the problems that when the power supply equipment is insufficient to support the power supply to the outdoor equipment load, the outdoor equipment load is directly powered down, and even data is lost in severe cases.
Description
Technical Field
The present invention relates to the field of electronic circuits, and in particular, to an outdoor device power supply control circuit, an outdoor device power supply system, and an outdoor device.
Background
The load in the outdoor equipment can be suitable for various power supply equipment to supply power, such as a power adapter, a solar panel, a mobile power supply and the like, and the state commonly used at present is that the power adapter and the solar panel share one charging interface, so that the power supply equipment such as the solar panel can not support the power supply of the system for a long time due to various factors, and the problem that the system is powered down and data are lost when the battery does not exist or the electric quantity is insufficient can occur.
Disclosure of Invention
The invention mainly aims to provide an outdoor equipment power supply control circuit, an outdoor equipment power supply system and outdoor equipment, and aims to solve the problems that when power supply equipment is insufficient to support power supply for outdoor equipment loads, the outdoor equipment loads are directly powered down, and even data are lost in severe cases.
In order to achieve the above object, the present invention provides an outdoor equipment power supply control circuit, which is applied to an outdoor equipment, wherein the outdoor equipment comprises an outdoor equipment load, and the outdoor equipment power supply control circuit comprises:
the power input port is used for accessing power supply equipment;
The power output port is electrically connected with an outdoor equipment load;
The system power supply detection control circuit is used for detecting the type of power supply equipment connected with the power supply input port and controlling on/off between the power supply input port and the power supply output port according to the detected type of the power supply equipment.
Optionally, the system power supply detection control circuit is specifically configured to control disconnection of the power supply input port and the power supply output port when it is detected that the power supply device to which the power supply input port is connected is a solar panel;
When the power supply equipment connected to the power input port is detected to be a mobile power supply or a power adapter, the power input port is controlled to be electrically connected with the power output port, so that power is supplied to the outdoor equipment load.
Optionally, the outdoor equipment power supply control circuit further includes:
the energy storage system is respectively connected with the power input port and the power output port and is used for storing electric energy output by the power supply equipment.
Optionally, the system power supply detection control circuit is further configured to detect, when it is detected that the power supply device to which the power supply input port is connected is a solar panel, an electric quantity stored by the energy storage system, and when the electric quantity stored by the energy storage system is greater than or equal to a first electric quantity threshold, control the power supply input port to be electrically connected with the power supply output port, so as to control the solar panel to supply power to the outdoor device load.
Optionally, the energy storage system includes:
The power supply comprises a charging chip and an energy storage battery, wherein the input end of the charging chip is connected with the power supply input port, and the output end of the charging chip is connected with the energy storage battery.
Optionally, the system power supply detection control circuit is further configured to control the energy storage system to supply power to the outdoor equipment load when it is detected that the power supply equipment connected to the power supply input port is a solar panel.
Optionally, the system power supply detection control circuit is further configured to detect power of the solar panel when detecting that the power supply device connected to the power supply input port is the solar panel, and control the power supply input port to be electrically connected with the power supply output port when detecting that the power of the solar panel is greater than or equal to a first power threshold.
Optionally, the outdoor equipment power supply control circuit further comprises an equipment type identification port;
the system power supply detection control circuit comprises:
The power supply control switch is arranged between the power supply input port and the power supply output port in series;
The power supply control device comprises a power supply control switch, a detection trigger switch, a power supply input port and a power supply output port, wherein the power supply control switch is connected with the power supply input port, the power supply control switch is connected with the power supply input port and the power supply output port, the power supply type identification port is connected with the power supply control switch, the power supply control switch is connected with the power supply input port and the power supply output port, the power supply control switch is connected with the power supply input port, the power supply input port and the power supply adapter is connected with the power supply input port, the power supply control switch is connected with the power supply input port, and the power supply connection is connected with the power supply adapter.
The invention also provides an outdoor equipment power supply system which comprises a solar panel and the outdoor equipment power supply control circuit;
The solar panel is connected with the outdoor equipment power supply control circuit, and when the solar panel is connected to the outdoor equipment power supply control circuit, the solar panel outputs a first marking signal to the outdoor equipment power supply control circuit;
And the outdoor equipment power supply control circuit is used for disconnecting the electric connection between the solar panel and the outdoor equipment load when the first indication signal is received.
The invention also provides an outdoor device, which comprises a solar panel and the outdoor device power supply control circuit;
or an outdoor equipment power supply system as described above.
The invention detects the type of the power supply equipment connected with the power supply input port by arranging the system power supply detection control circuit, and controls the on/off between the power supply input port and the power supply output port according to the detected type of the power supply equipment, so as to disconnect the electric connection between the power supply equipment and the outdoor equipment load when the connected power supply equipment is detected as equipment which can not directly supply power to the outdoor equipment load. The invention solves the problems that when the power supply equipment is insufficient to support the power supply to the outdoor equipment load, the outdoor equipment load is directly powered down, and even data is lost in severe cases.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a power control circuit for an outdoor unit according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of a power supply control circuit of the outdoor device in fig. 1.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 10 | System power supply detection control circuit | VBUS_5V | Power input port |
| 11 | Power supply control switch | VBUS_5V_P | Power supply output port |
| 12 | Detection trigger switch | USB_P | Device type identification port |
| 20 | Energy storage system | U1 | Charging chip |
| 30 | Electric connector | BT1 | Energy storage battery |
| 100 | Outdoor equipment load |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present invention), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean that a exists alone, while a and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
The invention provides a power supply control circuit of an outdoor device, which is applied to the outdoor device, wherein the outdoor device comprises an outdoor device load 100.
Referring to fig. 1 and 2, in an embodiment of the present invention, the outdoor apparatus power supply control circuit includes:
The power input port VBUS_5V is used for accessing power supply equipment;
The power output port VBUS_5V_P is electrically connected with the outdoor equipment load 100;
The system power supply detection control circuit 10 is respectively connected with the power supply input port VBUS_5V and the power supply output port VBUS_5V_P, and is used for detecting the type of power supply equipment connected with the power supply input port VBUS_5V and controlling the on/off state between the power supply input port VBUS_5V and the power supply output port VBUS_5V_P according to the detected type of the power supply equipment.
In this embodiment, the outdoor device may be a doorbell, a monitoring camera, a speaker, or other outdoor devices. The outdoor equipment can be further provided with an electric connector 30, the electric connector 30 can be electrically connected with the power supply equipment, the electric connector 30 can adopt a USB interface, and specifically can be a Type-C interface, a mini USB interface, a Type-A interface, a Type-B interface or other electric connectors 30 capable of realizing charging, and the electric connector 30 is at least provided with a power input port VBUS_5V. The electrical connector 30 may be connected to different power supply devices, such as a solar panel, a power adapter, a mobile power supply, etc., that is, the power supply devices of the present embodiment, such as the power adapter and the solar panel, may share a Type-C interface of one input terminal, so that when one of the two power supply paths exists, all power supply paths are the same, and the power supply paths can supply power to the whole system and supply power to the energy storage system 20, such as a battery, in the outdoor device, and the power adapter and the mobile power supply can supply stable power to the outdoor device load 100 when in operation. The solar panel can convert solar energy into direct current electric energy through photovoltaic effect by the solar cell and output the direct current electric energy to outdoor equipment through a power input port VBUS_5V to supply power to an outdoor equipment load 100 in the outdoor equipment. It is understood that the solar panel can generate limited electric energy, and the solar panel can also be subjected to different weather and sunlight intensity, and the generated electric energy also fluctuates. In addition, the solar panel cannot support the outdoor equipment load 100 for a long time to supply power due to the fact that the solar panel cannot be too large in power due to the fact that the solar panel is limited by the area of the solar panel, once a battery does not exist or the battery is insufficient, the outdoor equipment load 100 can be powered down, cannot work normally, and even data can be lost when serious.
For this reason, in this embodiment, by providing the system power supply detection control circuit 10, the input end of the power supply detection control circuit is connected to the power supply input port vbus_5v, the output end of the power supply detection control circuit is connected to the power supply output port vbus_5v_p of the electrical connector 30, and when the system power supply detection control circuit 10 controls the power supply input port vbus_5v and the power supply output port vbus_5v_p to be electrically connected, the power supply device can be electrically connected to the outdoor device load 100 through the power supply input port vbus_5v and the power supply output port vbus_5v_p, so as to realize that the power supply device supplies power to the outdoor device load 100. In contrast, when the system power supply detection control circuit 10 controls the power supply input port vbus_5v and the power supply output port vbus_5v_p to be disconnected, a current loop cannot be formed between the power supply device and the outdoor device load 100, so that the power supply device cannot directly supply power to the outdoor device load 100.
The system power supply detection control circuit 10 can detect the type of the power supply device connected to the power supply input port vbus_5v, and determine whether the type of the power supply device is a solar panel, a power supply adapter or a mobile power supply. Specifically, the system power supply detection control circuit 10 may detect a current voltage value of the electrical connector 30 accessing the external device, and the system power supply detection control circuit 10 may identify a type of the power supply device of the current peripheral according to the current voltage value and a preset mapping relationship between different voltage values and different interface types. It should be noted that, when different power supply apparatuses are connected to the electrical connector 30, the voltage values detected by the voltage detection circuit may be different. Therefore, in this embodiment, the correspondence between each power supply device type and the voltage value may be predefined, and then the accessed power supply device type may be determined based on the mapping relationship. In a specific embodiment, the electrical connector 30 may be provided with a device type identification port usb_p, and the system power supply detection control circuit 10 may determine the type of the power supply device to be connected according to the level of the device type identification port usb_p or the voltage value. The system power supply detection control circuit 10 determines whether the connected power supply device is a device capable of directly supplying power to the outdoor equipment load 100 according to the detected type of the power supply device, if so, the power supply input port vbus_5v and the power supply output port vbus_5v_p are controlled to be electrically connected, so that the power supply device connected with the power supply input port vbus_5v is controlled to directly supply power to the outdoor equipment load 100, otherwise, the power supply connection between the power supply input port vbus_5v and the power supply output port vbus_5v_p is controlled to be disconnected, and at the moment, the power supply device connected with the power supply input port vbus_5v cannot directly supply power to the outdoor equipment load 100.
The invention detects the type of the power supply equipment accessed by the power supply input port VBUS_5V by arranging the system power supply detection control circuit 10, and controls the on/off between the power supply input port VBUS_5V and the power supply output port VBUS_5V_P according to the detected type of the power supply equipment, so as to disconnect the electric connection between the power supply equipment and the outdoor equipment load 100 when the accessed power supply equipment is detected as equipment which can not directly supply power to the outdoor equipment load 100. The invention solves the problems that when the power supply equipment is insufficient to support the power supply of the outdoor equipment load 100, the outdoor equipment load 100 is directly powered down, and even data is lost in severe cases.
Referring to fig. 1 and 2, in an embodiment, the system power supply detection control circuit 10 is specifically configured to control the disconnection of the power supply input port vbus_5v from the power supply output port vbus_5v_p when detecting that the power supply device to which the power supply input port vbus_5v is connected is a solar panel;
When it is detected that the power supply device connected to the power input port vbus_5v is a mobile power supply or a power adapter, the power input port vbus_5v is controlled to be electrically connected to the power output port vbus_5v_p, so as to supply power to the outdoor device load 100.
In this embodiment, the power supply of the solar panel is unstable, so the solar panel is defined as a power supply device that cannot directly supply power to the outdoor equipment load 100, and the power output of the power adapter and the mobile power supply is relatively stable, so the power adapter and the mobile power supply are directly supplied to the power supply device that supplies power to the outdoor equipment load 100. When the system power supply detection control circuit 10 determines that the connected power supply device is a mobile power supply or a power adapter, the power supply input port vbus_5v and the power supply output port vbus_5v_p are controlled to be electrically connected, and the mobile power supply or the power adapter can be electrically connected with the outdoor device load 100 through the power supply input port vbus_5v and the power supply output port vbus_5v_p, so that the power supply device can supply power to the outdoor device load 100. When the system power supply detection control circuit 10 determines that the connected power supply device is a solar panel, the power supply input port vbus_5v and the power supply output port vbus_5v_p are controlled to be disconnected, and a current loop cannot be formed between the solar panel and the outdoor equipment load 100, so that the solar panel cannot directly supply power to the outdoor equipment load 100.
Referring to fig. 1 and 2, in an embodiment, the outdoor device power supply control circuit further includes:
the energy storage system 20 is respectively connected with the power input port VBUS_5V and the power output port VBUS_5V_P, and the energy storage system 20 is used for storing electric energy output by power supply equipment.
In this embodiment, in the outdoor device power supply control circuit, according to different connected power supply devices, the energy storage system 20 may be selectively set, or the energy storage system 20 may be alternatively not set, for example, when the connected power supply device is a power adapter, the energy storage system 20 may be set, and when the connected power supply device is a mobile power supply or a solar panel, the energy storage system 20 may be set. The energy storage system 20 is directly connected to the power input port vbus_5v, when a power supply device is connected, the energy storage system 20 can store electric energy provided by the power supply device, and the power supply device can be one or a plurality of combinations of a solar panel, a mobile power supply and a power supply adapter.
Referring to fig. 1 and 2, in an embodiment, the system power supply detection control circuit 10 is further configured to detect an electric quantity stored in the energy storage system 20 when detecting that the power supply device to which the power supply input port vbus_5v is connected is a solar panel, and control the power supply input port vbus_5v to be electrically connected with the power supply output port vbus_5v_p when the electric quantity stored in the energy storage system 20 is greater than or equal to a first electric quantity threshold, so as to control the solar panel to supply power to the outdoor device load 100.
In this embodiment, when the connected power supply device is a solar panel, the solar panel preferentially provides electric energy for the energy storage system 20, when the electric energy stored in the energy storage system 20 is sufficient (greater than or equal to the first electric energy threshold), or the solar panel charges the energy storage system 20, when the electric energy stored in the energy storage system 20 is sufficient (greater than or equal to the first electric energy threshold), the power input port vbus_5v is electrically connected with the power output port vbus_5v_p, so that the solar panel can provide electric energy for the outdoor device load 100, at this time, the solar panel can continue to provide electric energy for the energy storage system 20, and also provide electric energy for the outdoor device load 100 until the energy storage system 20 is full, the energy storage system 20 can stop receiving the electric energy output by the solar panel, and the energy storage system 20 closes its charging function, and the solar panel only provides electric energy for the outdoor device load 100. The first electric quantity threshold value can be set to any value of 95% -100%. It may be appreciated that when the electric quantity stored in the energy storage system 20 is greater than or equal to the first electric quantity threshold, the power of the solar panel may be detected, whether the solar panel can provide stable electric energy to the outdoor equipment load 100 is determined according to the current power of the solar panel, if so, the power input port vbus_5v is controlled to be electrically connected with the power output port vbus_5v_p, otherwise, the power of the solar panel is smaller than the power required by the outdoor equipment load 100, that is, only one of charging or supplying power to the outdoor equipment load 100 by the energy storage system 20 can be maintained at the same time, and at the moment, the energy storage system 20 is preferentially supplied, that is, the power input port vbus_5v is controlled to be electrically disconnected from the power output port vbus_5v_p. The embodiment can specifically determine the power of the solar panel by detecting the current illumination intensity by the ambient light sensor or detecting the current output power of the solar panel by the power meter. For example, when the illumination is strong and the power is high, the solar panel can be controlled to supply power to the outdoor equipment load 100 and the energy storage system 20 at the same time, and when the illumination is weak and the power is low, the solar panel can be controlled to supply power to the energy storage system 20 only.
Referring to fig. 1, in one embodiment, the energy storage system 20 includes:
The power supply comprises a charging chip U1 and an energy storage battery BT1, wherein the input end of the charging chip U1 is connected with the power supply input port VBUS_5V, and the output end of the charging chip U1 is connected with the energy storage battery BT 1.
The charging chip U1 is used for converting electric energy output by the power supply equipment into electric energy required by outdoor equipment and outputting the electric energy to the energy storage battery BT1 for storage. Specifically, the charging chip U1 may perform DC-DC conversion, filtering, and the like on the electric energy that is connected to the power input terminal of the electric connector 30. The charging chip U1 may adjust the charging current and the charging voltage during charging, so that the charging of the energy storage battery BT1 may be in different phases. Alternatively, the charging process of the charging chip U1 includes, but is not limited to, a precharge phase, a constant current charging phase, and a constant voltage charging phase. And a precharge phase for precharging (restorative charge) the fully discharged battery cells. The precharge is typically performed when the battery voltage is below about 3V. And in the constant-current charging stage, when the voltage of the battery rises to a preset charging threshold value, for example, 3V, the charging current is increased to perform constant-current charging. In the constant current charging stage, the battery voltage is gradually increased along with the constant current charging process.
Referring to fig. 1 and 2, in an embodiment, the system power supply detection control circuit 10 is further configured to control the energy storage system 20 to supply power to the outdoor device load 100 when it is detected that the power supply device connected to the power input port vbus_5v is a solar panel.
In this embodiment, in order to maintain the normal operation of the outdoor equipment load 100 during the process of charging the energy storage system 20 with the solar panel, the energy storage system 20 may supply power to the outdoor equipment load 100, and when the power adapter is connected, the power adapter supplies power to both the energy storage system 20 and the outdoor equipment load 100, and at this time, the energy storage system 20 does not supply power to the outdoor equipment load 100. It can be appreciated that, when the power supply device to which the electrical connector 30 is connected is a solar panel, the embodiment preferably controls the energy storage system 20 to supply power to the outdoor device load 100 in order to ensure stable power supply to the outdoor device load 100. However, in practice, it may occur that the energy storage system 20 is too low to support powering the outdoor unit load 100. In order to ensure that the outdoor equipment load 100 cannot be powered down due to too low electric quantity of the energy storage system 20, and even lose data when serious, the embodiment can first determine the electric quantity stored by the energy storage system 20, so that the outdoor equipment load 100 cannot normally work due to the low electric quantity stored by the energy storage system 20, when the electric quantity of the energy storage system 20 is lower than the minimum working electric quantity threshold, namely the electric quantity of the energy storage system 20 is insufficient, the energy storage system 20 is preferentially powered, and the energy storage system 20 is turned off to supply power to the outdoor equipment load 100, so that the outdoor equipment load 100 is prevented from further consuming the electric quantity of the energy storage system 20. And therefore, when the power supply device to which the electrical connector 30 is connected is determined to be a solar panel, detecting the electric quantity stored by the energy storage system 20, and controlling the energy storage system 20 to stop supplying power to the outdoor device load 100 when the detected electric quantity stored by the energy storage system 20 is less than the minimum working electric quantity threshold. Specifically, when it is detected that the electrical connector 30 is connected to the power supply device, for example, the power supply device is plugged into a Type-C interface of the outdoor device, the electric quantity of the energy storage system 20 is detected, and the electric quantity of the energy storage system 20 is compared with a minimum working electric quantity threshold. When the amount of power stored by the energy storage system is less than the minimum operating power threshold, the energy storage system 20 only receives power from the solar panel and does not transmit power to the outdoor equipment load 100, and the solar panel also only supplies power to the energy storage system 20 and does not supply power to the outdoor equipment load 100. Because the solar panel only supplies power to the energy storage system 20, the solar panel does not cut off frequently, and the solar panel charges the energy storage system 20 instead of supplying power to the outdoor equipment load 100, so that the cruising ability of the energy storage system 20 can be improved. The minimum working power threshold is the minimum power required by the outdoor equipment load 100 to work normally, and when the outdoor equipment load 100 is lower than the minimum working power threshold, the outdoor equipment load cannot work normally.
In an embodiment, the system power supply detection control circuit 10 may further control the energy storage system 20 to supply power to the outdoor device load 100 when the detected power stored by the energy storage system 20 is greater than or equal to the second power threshold.
In this embodiment, the power of the solar panel is not able to maintain simultaneous power supply of the outdoor unit load 100 and the energy storage system 20. When it is determined that the electric quantity of the energy storage system 20 is greater than or equal to the second electric quantity threshold, the energy storage system 20 may close or maintain its charging function, and simultaneously control the energy storage system 20 to supply power to the outdoor equipment load 100, and continuously determine the electric quantity of the energy storage system 20:
When the electric quantity of the energy storage system 20 is smaller than the second preset electric quantity threshold value, the energy storage system 20 is controlled to start the self charging function, and meanwhile, the energy storage system 20 is controlled to stop supplying power to the outdoor equipment load 100, and at the moment, the energy storage system 20 starts to charge;
And when the electric quantity of the energy storage system 20 is greater than or equal to the second preset electric quantity threshold, controlling the energy storage system 20 to supply power to the outdoor equipment load 100 until the electric quantity of the energy storage system 20 is less than the second preset electric quantity threshold. The second preset power threshold represents a power value of the energy storage system 20 that is about to reach the minimum working power threshold, so that the outdoor equipment load 100 is prevented from being charged again when the energy storage system 20 reaches the minimum working power threshold, and the energy storage system 20 is prevented from directly powering down the outdoor equipment load 100 due to low power. And when the electric quantity of the energy storage system 20 is smaller than the second preset electric quantity threshold value, a microcontroller and the like in the outdoor equipment load 100 can be triggered to store data so as to prevent system data loss caused by instantaneous power failure.
Referring to fig. 1 and 2, in an embodiment, the system power supply detection control circuit 10 is further configured to detect power of a solar panel when detecting that the power supply device to which the power supply input port vbus_5v is connected is a solar panel, and control the power supply input port vbus_5v to be electrically connected to the power supply output port vbus_5v_p when detecting that the power of the solar panel is greater than or equal to a first power threshold.
In this embodiment, the voltage and the current output by the solar panel after photoelectric conversion are nonlinear, and with the change of the sunlight condition, the solar panel outputs electric energy with larger power after photoelectric conversion, that is, when sunlight is sufficient, the solar panel can absorb more solar energy and convert the solar energy into charging electric energy to the greatest extent. When the power of the solar panel is sufficient (greater than or equal to the first power threshold value) to supply power to the energy storage system 20 and the outdoor equipment load 100 at the same time, the power input port vbus_5v and the power output port vbus_5v_p can be controlled to be electrically connected so that the solar panel resembles the outdoor equipment load 100, and once the power of the solar panel is less than the first power threshold value, the power input port vbus_5v and the power output port vbus_5v_p are controlled to be electrically disconnected, and at the moment, the power supply device connected to the power input port vbus_5v only charges the energy storage system 20, but does not directly supply power to the outdoor equipment load 100.
Referring to fig. 2, in an embodiment, the outdoor device power control circuit further includes a device type identification port usb_p;
the system power supply detection control circuit 10 includes:
The power supply control switch 11 is arranged in series between the power supply input port vbus_5v and the power supply output port vbus_5v_p;
The device comprises a device type identification port USB_P, a detection trigger switch 12, a power supply control switch 11, a power supply input port VBUS_5V and a power supply output port VBUS_5V_P, wherein a controlled end of the detection trigger switch 12 is connected with the device type identification port USB_P, an output end of the detection trigger switch 12 is connected with a controlled end of the power supply control switch 11, the detection trigger switch 12 is used for outputting a turn-off trigger signal when an accessed solar panel is triggered so as to control the power supply control switch 11 to disconnect the power supply input port VBUS_5V and the power supply output port VBUS_5V_P, and outputting a turn-on trigger signal when an accessed mobile power supply or a power supply adapter is triggered so as to enable the power supply control switch 11 to be connected with the power supply input port VBUS_5V and the power supply output port VBUS_5V_P.
In this embodiment, the power supply control switch 11 is implemented by using a PMOS transistor Q14, the detection trigger switch 12 may be implemented by using two switching transistors, namely an NMOS transistor Q15 and a PMOS transistor Q16, a gate of the NMOS transistor Q15 is connected to a power input end and a device type identification port usb_p of the electrical connector 30, a source of the NMOS transistor Q15 is connected to the power input port vbus_5v through a pull-up resistor R1, a drain of the NMOS transistor Q15 is connected to a power input end usb_p_ble that can be connected to a load, for example, a microcontroller in the outdoor device load 100, and is connected to a power output end vsys_3v3 of the outdoor device load 100, where a voltage of the power output end vsys_3v3 of the outdoor device load 100 is lower than a voltage of the power input port vbus_5v, and in one embodiment, a pull-up resistor R2 may be further connected in series between the power output end vsys_3v3 of the outdoor device load 100 and the power input end usb_p_ble of the microcontroller. The grid of the PMOS tube Q16 is connected with the source electrode of the NMOS tube Q15 and the power input port VBUS_5V, the source electrode of the PMOS tube Q16 is connected with the controlled end of the power supply control switch 11, and the drain electrode of the PMOS tube Q16 is grounded. It will be appreciated that in the solar panel, a pull-down resistor is provided, which is connected to the gate of the NMOS transistor Q15 at the device type identification port usb_p connected to the electrical connector 30.
When a common power adapter is connected, the device type identification port USB_P is connected without a pull-down resistor, the power input port VBUS_5V outputs a high-level signal to the NMOS tube Q15 through the pull-up resistor R1, namely, the gate voltage of the NMOS tube Q15 is pulled up, the NMOS tube Q15 is controlled to be conducted, the gate voltage of the PMOS tube Q16 is pulled down, the PMOS tube Q16 is controlled to be conducted, the gate of the PMOS tube Q14 is pulled down by the low level output by the PMOS tube Q16 to be conducted, and the power input end VBUS_5V is conducted to the power output end VUBS _5V_P, so that the whole outdoor device load 100 can be supplied with power.
When the solar panel is inserted, since the device type identification port usb_p has a pull-down resistor, the gate voltage of the NMOS transistor Q15 is clamped at a low level, so that the NMOS transistor Q15 is not turned on, the gate voltage of the PMOS transistor Q16 is high (pulled up by the power input terminal vbus_5v), the PMOS transistor Q16 is turned off, the gate of the PMOS transistor Q14 is pulled up by the high level to which the power input port vbus_5v is connected and turned off, the power input port vbus_5v is not turned on to the power output port vbus_5v_p, and the solar panel does not supply power to the outdoor device load 100.
In some embodiments, the system power supply detection control circuit 10 further includes resistors R3 and R4, where the resistor R3 is serially connected between the power input port vbus_5v and the input end and the controlled end of the power supply control switch 11 (i.e. between the source and the gate of the PMOS transistor), and the resistor R4 is serially connected between the controlled end of the power supply control switch 11 and the output end of the detection trigger switch 12 (i.e. between the gate of the PMOS transistor Q14 and the source of the NMOS transistor Q15). According to the ID signal on the solar panel, the ID pulling-down function is utilized to distinguish the type of the power supply equipment connected with the type-c, so that the power supply path of the solar panel to the outdoor equipment load 100 is cut off, the solar panel only supplies power to the charging chip U1 and does not supply power to the outdoor equipment load 100, the system power supply detection control circuit 10 of the embodiment is realized by adopting MOS transistors Q14, Q15, Q16, a resistor R1 and the like, and under the condition that the outdoor equipment load 100 does not operate, the hardware architecture can be adopted to control the disconnection of the outdoor equipment load 100 and the solar panel path, other chip control is not needed, and even if the energy storage system 20 does not exist, the power supply path between the solar panel and the outdoor equipment load 100 can be cut off by utilizing the system power supply detection control circuit 10 of the embodiment, so that the problems of insufficient power supply capacity of the solar panel, product failure and data blank recording are solved.
Of course, in other embodiments, the system power supply detection control circuit 10 may also be implemented by a microcontroller and a switch tube, for example, a microprocessor such as a single-chip microcomputer, a DSP, etc., where the microcontroller may control on/off of the switch tube by controlling on/off of the switch tube, and the microcontroller may integrate a software program for implementing data analysis and comparison to process the detected type of the power supply device, the electric quantity of the energy storage system 20, and the data of the power of the solar panel, and generate corresponding control signals, so as to control on/off of the switch tube.
The invention also provides an outdoor equipment power supply system which comprises a solar panel and the outdoor equipment power supply control circuit;
The solar panel is connected with the outdoor equipment power supply control circuit, and when the solar panel is connected to the outdoor equipment power supply control circuit, the solar panel outputs a first marking signal to the outdoor equipment power supply control circuit;
The outdoor equipment power supply control circuit is configured to disconnect the electrical connection between the solar panel and the outdoor equipment load 100 when the first indication signal is received.
The detailed structure of the outdoor equipment power supply control circuit can refer to the above embodiments, and will not be described herein again, and it can be understood that, because the above outdoor equipment power supply control circuit is used in the outdoor equipment power supply system of the present invention, the embodiments of the outdoor equipment power supply system of the present invention include all the technical schemes of all the embodiments of the above outdoor equipment power supply control circuit, and the achieved technical effects are also completely the same, and will not be described herein again.
In this embodiment, a pull-down resistor is provided in the solar panel, and the pull-down resistor is connected to the system power supply detection control circuit 10 in the outdoor device power supply control circuit at the device type identification port usb_p connected to the electrical connector 30. When the solar panel is connected to the power input port vbus_5v of the electrical connector 30, a low-level signal is output, that is, a first indication signal is sent to the system power supply detection control circuit 10, and when the first indication signal is received, the type of the power supply device to which the power input port vbus_5v is connected is a solar panel, and at this time, the power input port vbus_5v and the power output port vbus_5v_p are controlled to be disconnected, and a current loop cannot be formed between the solar panel and the outdoor equipment load 100, so that the solar panel cannot directly supply power to the outdoor equipment load 100. On the contrary, when the mobile power supply or the power adapter is connected to the power input port of the electric connector, the pull-down resistor is not set, so that the low-level signal is not output, and therefore when the power supply equipment is connected to the electric connector and the first indication signal is not received, the type of the power supply equipment connected to the power input port is the mobile power supply or the power adapter.
The invention also provides an outdoor device, which comprises the outdoor device load 100 and the outdoor device power supply control circuit, or comprises the outdoor device power supply system. The detailed structures of the outdoor equipment power supply control circuit and the outdoor equipment power supply system can refer to the embodiments, and are not repeated herein, and it can be understood that the embodiments of the outdoor equipment comprise all the technical schemes of all the embodiments of the outdoor equipment power supply control circuit and the outdoor equipment power supply system, and the achieved technical effects are completely the same, and are not repeated herein.
In this embodiment, the outdoor equipment load 100 may include, but is not limited to, outdoor equipment keys, microcontrollers, outdoor equipment speakers, power management circuits, clock circuits, etc., and in some embodiments, the outdoor equipment load 100 may also be provided with a display screen, a wireless communication module, etc. The power management circuit is connected with a power output port VBUS_5V_P of the outdoor equipment power supply control circuit, and the power management circuit can be provided with a plurality of output ends and is used for providing required working voltages for outdoor equipment keys, microcontrollers, outdoor equipment speakers, clock circuits and the like so as to drive each circuit module to work. The microcontroller may be a control center of the outdoor equipment load 100, and may be further connected to a power supply device through an electrical connector 30, for example, a power adapter, a mobile power supply, etc., where during the working process, the power management circuit works in different modes, for example, a standby mode, a normal working mode, or a shutdown mode, etc., according to a control signal of the microcontroller. It will be appreciated that the power provided by the power supply device may be 5V or higher, and the power supplied by the microcontroller, such as a single-chip microcomputer, DSP, etc., is typically 3.3V, and the power management circuit of the outdoor device load 100 may step down the power supplied by the power supply device, and then provide the microcontroller with the operating voltage required by the microcontroller.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
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| CN114421446A (en) * | 2021-12-28 | 2022-04-29 | 歌尔科技有限公司 | Outdoor equipment power supply control method, power supply control system and outdoor equipment |
| CN116500916A (en) * | 2023-03-30 | 2023-07-28 | 深圳市正浩创新科技股份有限公司 | Device control method, electronic device, and computer-readable storage medium |
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| CN110212613A (en) * | 2019-06-28 | 2019-09-06 | 深圳市锐明技术股份有限公司 | A kind of charge control switching circuit and charge control switching method |
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| GB0100980D0 (en) * | 2001-01-13 | 2001-02-28 | Solar Highways Ltd | Mobile power supply unit |
| CN101702529B (en) * | 2009-11-26 | 2011-11-16 | 上海交通大学 | Power supply method for photovoltaic movable emergency power supply system |
| WO2013078668A1 (en) * | 2011-12-02 | 2013-06-06 | 拓实电子（深圳）有限公司 | Solar dual-supply circuit |
| CN103066687A (en) * | 2012-11-19 | 2013-04-24 | 宁波金源电气有限公司 | Uninterrupted power supply (UPS) solar charged inverter |
| CN104967191B (en) * | 2015-07-28 | 2017-03-29 | 青岛歌尔声学科技有限公司 | For the charging circuit and portable power source of portable power source |
| JP6895216B2 (en) * | 2016-05-09 | 2021-06-30 | モッツエンボッカー マービン | DC smart grid and smart outlet |
| CN107769188B (en) * | 2016-08-23 | 2023-07-21 | 中兴通讯股份有限公司 | Switching power supply parallel system |
| CN109756021B (en) * | 2017-11-07 | 2024-07-19 | 广东美的生活电器制造有限公司 | Power supply control circuit and electrical equipment |
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| CN105656169A (en) * | 2014-11-28 | 2016-06-08 | 比亚迪股份有限公司 | Power supply system and control method of power supply system |
| CN110212613A (en) * | 2019-06-28 | 2019-09-06 | 深圳市锐明技术股份有限公司 | A kind of charge control switching circuit and charge control switching method |
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