CN215185946U - Power supply cabinet - Google Patents
Power supply cabinet Download PDFInfo
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- CN215185946U CN215185946U CN202120937791.6U CN202120937791U CN215185946U CN 215185946 U CN215185946 U CN 215185946U CN 202120937791 U CN202120937791 U CN 202120937791U CN 215185946 U CN215185946 U CN 215185946U
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Abstract
The utility model provides a power cabinet belongs to electron technical field. The interface that charges of this power rack is connected with the charging wire, and this power rack includes control module, switch module and power. Wherein, control module can be when external equipment inserts the charging wire, and automatic control switch module switches on the power with the interface that charges. After the power supply is connected with the charging interface, the power supply can charge the external equipment through the charging wire connected to the charging interface. So can confirm, the embodiment of the utility model provides a power cabinet not only the structure can be comparatively simple, and operation flow is comparatively succinct moreover, has improved the interactivity of user with the power cabinet.
Description
Technical Field
The utility model relates to the field of electronic technology, in particular to power cabinet.
Background
The power supply cabinet is a leasing device capable of providing charging service, and a user can lease charging facilities such as an emergency charging wire and a mobile power supply in the power supply cabinet to charge a held terminal (namely, an external device).
In the related art, the power cabinet is generally configured with a charging control (e.g., a physical button). After receiving the touch control instruction for the charging control, the power supply cabinet can determine that the external equipment is inserted into the emergency charging wire, and further supplies power to the external equipment through the emergency charging wire. That is, the user need insert emergent charging wire with external equipment after the emergent charging wire when adopting the emergent charging wire in the power rack to charge for external equipment, further touch-control charging control spare.
However, because the power supply cabinet in the related art needs to be configured with the charging control, and the power supply cabinet needs to supply power to the external device inserted with the emergency charging wire in response to the touch instruction for the charging control, not only the structure is complex, but also the operation flow is complex, and the interactivity between the user and the power supply cabinet is poor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a power cabinet, the structure that can solve power cabinet among the correlation technique is complicated, and the comparatively complicated technical problem of operation flow. The technical scheme is as follows:
on one hand, the power supply cabinet is provided, and a charging interface of the power supply cabinet is connected with a charging wire; the power supply cabinet includes: the device comprises a control module, a switch module and a power supply;
the control module is respectively connected with the charging interface and the switch module, and is used for transmitting a starting signal to the switch module if it is determined that an external device is connected with the charging line based on the voltage at the charging interface;
the switch module is further connected with the power supply and the charging interface respectively, and the switch module is used for controlling the power supply to be conducted with the charging interface based on the starting signal.
Optionally, the control module is configured to determine that an external device is connected to the charging line if it is detected that the voltage at the charging interface is greater than a voltage threshold.
Optionally, the control module includes: a first sampling resistor and a control circuit;
one end of the first sampling resistor is connected with the negative electrode of the charging interface and the control circuit respectively, and the other end of the first sampling resistor is connected with a grounding end;
the control circuit is connected with the switch module and used for collecting the voltage at the charging interface through the first sampling resistor and transmitting a starting signal to the switch module if the voltage at the charging interface is detected to be greater than a voltage threshold value.
Optionally, the control module is further configured to transmit a turn-off signal to the switch module if it is detected that a duration of connection of the external device to the charging line is greater than a duration threshold, or the external device is disconnected from the charging line;
the switch module is further used for controlling the power supply to be disconnected with the charging interface based on the turn-off signal.
Optionally, the control module includes a timer; the control module is used for starting the timer if detecting that the external equipment is connected with the charging wire, and determining the time length of the external equipment connected with the charging wire through the timing time length of the timer.
Optionally, the control module is configured to collect a charging current in a charging loop after the switch module controls the power supply to be switched on with the charging interface, and determine that the external device is disconnected from the charging line if it is detected that the charging current is smaller than a current threshold; the charging loop is a loop between the power supply and the charging interface.
Optionally, the control module includes: a second sampling resistor and a control circuit;
one end of the second sampling resistor is connected with the charging loop and the control circuit respectively, and the other end of the second sampling resistor is connected with a grounding end;
the control circuit is further connected with the switch module, and the control circuit is used for collecting the charging current in the charging loop through the second sampling resistor after the switch module controls the power supply to be connected with the charging interface, and transmitting the turn-off signal to the switch module if the charging current is detected to be smaller than a current threshold value.
Optionally, the power supply cabinet further includes: a communication module;
the control module is further connected with the communication module, the communication module is in communication connection with a background server, and the control module is further used for controlling the communication module to send disconnection state information to the background server if the disconnection of the charging wire and the charging interface is determined based on the voltage at the charging interface, wherein the disconnection state information is used for indicating the disconnection of the charging wire and the charging interface.
Optionally, the control module is configured to determine that the charging line is disconnected from the charging interface if it is detected that the voltage at the charging interface is outside a target voltage range.
Optionally, the switch module includes: a first switching circuit and a second switching circuit;
the first switch circuit is respectively connected with the control module, the positive electrode of the power supply and the positive electrode of the charging interface, and the first switch circuit is used for responding to the starting signal and controlling the conduction of the positive electrode of the charging interface and the positive electrode of the power supply;
the second switch circuit is respectively connected with the control module, the negative electrode of the charging interface and the grounding terminal, and the second switch circuit is used for responding to the starting signal and controlling the conduction of the negative electrode of the charging interface and the grounding terminal.
The embodiment of the utility model provides a technical scheme's beneficial effect can include at least:
the utility model provides a power supply cabinet, this power supply cabinet's the interface that charges is connected with the charging wire, and this power supply cabinet includes control module, switch module and power. Wherein, control module can be when external equipment inserts the charging wire, and automatic control switch module switches on the power with the interface that charges. After the power supply is connected with the charging interface, the power supply can charge the external equipment through the charging wire connected to the charging interface. So can confirm, the embodiment of the utility model provides a power cabinet not only the structure can be comparatively simple, and operation flow is comparatively succinct moreover, has improved the interactivity of user with the power cabinet.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to be able to obtain other drawings according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power cabinet according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another power cabinet provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another power cabinet provided in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a middle part circuit of a power cabinet according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another power cabinet according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a middle part circuit of a power cabinet according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another power cabinet according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another power cabinet according to an embodiment of the present invention;
fig. 9 is a flowchart of a work process of a power cabinet according to an embodiment of the present invention.
The various reference numbers in the drawings are illustrated below:
01-a control module, 02-a switch module, 03-a power supply, 04-a communication module and 10-a background server;
011-control circuit, 012-voltage sampling circuit, 013-disconnection detection circuit, 021-first switching circuit, 022-second switching circuit;
j1-a charging interface, L11-L13-a charging line, INT-a first detection end, ADC _ CH 1-a second detection end, ADC _ CH 2-a third detection end;
r0-voltage dividing resistor, R1-current limiting resistor, C1-filter capacitor, V0-detection power supply end, V1-charging power supply end, D1-diode, GND-grounding end, Q1-first switch, Q2-second switch, R10-device insertion detection resistor, R20-current sampling resistor and EN-control end of main control circuit;
device numbers in the device insertion detection circuit, the second switch circuit, and the device disconnection detection circuit: r11, R12, R13, R21, R30 and R31-resistors, C10, C11 and C20-capacitors, and M10-transistors.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As the amount of terminal (e.g., cell phone) shipment increases, and the frequency with which users use terminals increases, so does the demand on sharable charging facilities in the marketplace. Accordingly, a large number of power supply cabinets for accommodating charging facilities, which are generally mobile power supplies (also referred to as power packs), are gradually available on the market. The user can rent the charging facility in the power supply cabinet through the held terminal. For example, a lease code, which may be a bar code or a two-dimensional code, may be set on the power cabinet, and a user may scan the lease code using the held terminal to lease the charging facility in the power cabinet.
However, before the user rents the charging facility in the power supply cabinet, if the terminal is turned off due to too low power, the user cannot rent the charging facility. For this reason, the current power supply cabinet is generally equipped with an emergency charging tail (hereinafter, referred to as a charging wire), or a charging interface capable of connecting the charging wire, so that a user can temporarily supplement power to a terminal that is shut down before renting a charging facility.
However, for a power supply cabinet only equipped with a charging interface, the user needs to carry a charging wire, and when the user does not carry the charging wire, the user still cannot temporarily supplement power for the terminal which is turned off, and the operability is poor. For a power supply cabinet equipped with charging wires, the power supply cabinet also needs to be equipped with charging controls. The power rack needs to respond to the touch operation to this charging control, charges for the terminal that inserts the charging wire through the charging wire. The structure and the operation flow of the power cabinet are both complex, and the interactivity of a user is poor.
The embodiment of the utility model provides a power supply cabinet including being equipped with the charging wire. This power rack can automated inspection whether have the terminal (i.e. the external device that the following embodiment recorded) to insert the charging wire, and can insert the charging wire when detecting that there is the terminal, charges for the terminal through this charging wire automatically. So can confirm that this power rack not only structure can be comparatively simple, and the operation flow that charges for the terminal through the charging wire is also comparatively succinct moreover.
Fig. 1 is a schematic structural diagram of a power cabinet provided in an embodiment of the present invention. As shown in fig. 1, the charging interface J1 of the power cabinet includes a positive pole (+) and a negative pole (-) and the power interface J1 may be connected with a charging wire. It can be referred to here that the charging wire is fixedly connected with the power supply interface J1.
Optionally, the power supply cabinet may include a plurality of different types of charging cords. For example, the power supply cabinet shown in fig. 1 includes three different types of charging wires, which are respectively: charging line L11 with lighting interface, charging line L12 with Type-C interface, and charging line L13 with the Micro interface. Wherein, lighting, Type-C and Micro all refer to the Type sign of the interface of charging wire. Therefore, the power cabinet can be used for charging different types of external equipment, and can be compatible with various external equipment.
With continued reference to fig. 1, the power supply cabinet may include: a control module 01, a switch module 02 and a power supply 03.
The control module 01 can be connected to the charging interface J1 and the switch module 02, respectively. The control module 01 may be configured to transmit a start signal to the switch module 02 if it is determined that the external device is connected to the charging line based on the voltage at the charging interface J1.
The switch module 02 may also be connected to the power source 03 and the charging interface J1, respectively. The switch module 02 can be used for controlling the power source 03 and the charging interface J1 to be conducted based on the turn-on signal. After power 03 and the interface J1 that charges switched on, power 03 can be to the interface J1 transmission power signal that charges promptly, and this power signal can further transmit to the external equipment who inserts the charging wire through the charging wire, realizes reliably charging external equipment.
Through setting up hardware circuit cooperation work such as control module 01 and switch module 02, realize automated inspection whether have external equipment to insert the charging wire to and charge for external equipment automatically. Compared with the prior art that the physical keys are arranged on the power cabinet, a user needs to trigger the power cabinet through the keys to determine that the external equipment is connected and charge the external equipment, so that the structural complexity of the power cabinet is reduced, the interaction process between the user and the power cabinet is simplified, and the operation flow executed by the power cabinet is simplified.
To sum up, the embodiment of the utility model provides a power supply cabinet, this power supply cabinet's the interface that charges is connected with the charging wire, and this power supply cabinet includes control module, switch module and power. Wherein, control module can be when external equipment inserts the charging wire, and automatic control switch module switches on the power with the interface that charges. After the power supply is connected with the charging interface, the power supply can charge the external equipment through the charging wire connected to the charging interface. So can confirm, the embodiment of the utility model provides a power cabinet not only the structure can be comparatively simple, and operation flow is comparatively succinct moreover, has improved the interactivity of user with the power cabinet.
Fig. 2 is a schematic structural diagram of another power cabinet provided in an embodiment of the present invention. As shown in fig. 2, the switch module 02 may include: a first switching circuit 021 and a second switching circuit 022.
The first switching circuit 021 may be connected to the control module 01, a positive pole (+) of the power source 03, and a positive pole (+) of the charging interface J1, respectively. The first switching circuit 021 can be used for controlling the positive pole (+) of the charging interface J1 to be conducted with the positive pole (+) of the power supply 03 in response to the turn-on signal transmitted by the control module 01.
The second switch circuit 022 may be connected to the control module 01, the negative (-) electrode of the charging interface J1, and the ground GND, respectively. The second switch circuit 022 may be configured to control the negative pole (-) of the charging interface J1 to be conductive with the ground GND in response to the received on signal. The ground GND may be used to indicate the negative (-) of the power supply 03.
In fig. 2, the positive electrode (+) of the power supply 03 is represented by a charging power supply terminal V1. After the positive pole (+) of the charging interface J1 is connected to the positive pole (+) of the power supply 03 and the negative pole (-) of the charging interface J1 is connected to the ground GND, the positive pole (+) of the charging interface J1, the charging power supply terminal V1, the negative pole (-) of the charging interface J1 and the ground GND form a charging loop. The power signal provided by the charging power supply terminal V1 can flow into the external device inserted with the charging wire through the charging loop to charge the external device.
Optionally, in the embodiment of the present invention, the control module 01 may also be configured to collect the charging current in the charging loop after the switch module 02 controls the power supply 03 to be turned on with the charging interface J1. And if the charging current is detected to be smaller than the current threshold, determining that the external equipment is disconnected with the charging wire, and transmitting a turn-off signal to the switch module 02.
The switch module 02 may also be configured to control the power source 03 to be disconnected from the charging interface J1 based on the off signal. After the power source 03 is disconnected from the charging interface J1, the power source 03 stops transmitting the power source signal to the charging interface J1. The power supply cabinet is no longer charged for the external equipment through the charging wire, and the purpose of automatic power off is achieved.
For example, in conjunction with fig. 2, the first switching circuit 021 included in the switching module 02 may control the positive pole (+) of the charging interface J1 to be disconnected from the positive pole (+) of the power supply 03 based on the received off signal. Similarly, the second switch circuit 022 included in the switch module 02 may control the negative pole (-) of the charging interface J1 to be disconnected from the ground GND based on the received off signal. The charging circuit can be reliably broken after the positive pole (+) of the charging interface J1 is disconnected from the positive pole (+) of the power supply 03 and/or the negative pole (-) of the charging interface J1 is disconnected from the ground GND. Based on this, it can be determined that the control module 01 can transmit the turn-off signal to only one of the first switch circuit 021 and the second switch circuit 022, that is, the purpose of controlling the switch module 02 to disconnect the power supply AC from the charging interface J1 can be achieved.
Alternatively, the current threshold described in the above embodiment may be stored in the control module 01 in advance, and the current threshold may be several tens of milliamperes (mA), such as 64 mA. Through the test, after external equipment and charging wire disconnection, the charging current in the charging circuit can reduce gradually. In this way, the control module 01 can reliably and automatically determine whether the external device is disconnected from the charging line based on the charging current in the charging loop. And after the control module 01 determines that the external device is disconnected from the charging line, the automatic control switch module 02 disconnects the power supply 03 from the charging interface J1.
According to above-mentioned embodiment, the utility model discloses whether power rack of record not only can automatic detection have external equipment to insert the charging wire to when external equipment inserts the charging wire, the automatic control power supply provides power signal to the charging wire, thereby reaches the purpose of charging for external equipment is automatic. But also can whether automated inspection external equipment has been pulled out from the charging wire to when the external equipment is pulled out from the charging wire, the automatic control power supply stops providing signal to the charging wire, thereby reaches the purpose of reliable outage.
Optionally, fig. 3 is a schematic structural diagram of another power supply cabinet provided in an embodiment of the present invention. As shown in fig. 3, the first switching circuit 021 may include: a first switch Q1. The second switching circuit 022 may include: and a second switch Q2.
Wherein, the control terminal of the first switch Q1 can be connected with the control module 01 (not shown in the figure). The input terminal of the first switch Q1 may be connected to the positive pole (+) of the power supply 03, i.e., the charging power supply terminal V1. The output terminal of the first switch Q1 may be connected to the positive pole (+) of the charging interface J1.
The control terminal of the second switch Q2 may be connected to the control module 01 (not shown). The input of the second switch Q2 may be connected to the negative (-) of the charging interface J1. The output of the second switch Q2 may be connected to the ground GND.
Optionally, the first switch Q1 and/or the second switch Q2 may be electronic load switches. So, can prevent to overflow the phenomenon and take place, avoid connecting in the external device of charging wire by burning out.
Through testing, if an external device is inserted into the charging line, the voltage at the charging interface J1 generally increases. Therefore, in the embodiment of the present invention, the control module 01 can be used for: if the voltage at the charging interface J1 is detected to be larger than the voltage threshold, it is determined that the external device is connected with the charging line. Alternatively, the voltage threshold may be stored in the control module 01 in advance, as in the current threshold described above.
With continued reference to fig. 3, the control module 01 may include: a first sampling resistor R10 and a control circuit 011.
One end of the first sampling resistor R10 may be connected to the negative pole (-) of the charging interface J1 and the control circuit 011, respectively. The other end of the first sampling resistor R10 may be connected to the ground GND.
Alternatively, the first sampling resistor R10 may be indirectly connected to the control circuit 011 through the second switching circuit 022. That is, as shown in fig. 3, one end of the first sampling resistor R10 and the input end of the second switch Q2 may be connected to a point and connected to the negative (-) of the charging interface J1 together.
The control circuit 011 can be connected to the switch module 02 (not shown). The control circuit 011 can be configured to collect the voltage at the charging interface J1 through the first sampling resistor R10, and transmit a turn-on signal to the switch module 02 if the voltage at the charging interface J1 is detected to be greater than the voltage threshold.
Based on the operation principle of the first sampling resistor R10, the first sampling resistor R10 may also be referred to as a device insertion detection circuit. In addition, referring to fig. 4, the device insertion detection circuit includes resistors R11, R12, and R13, capacitors C10 and C11, and a transistor M10 in addition to the first sampling resistor R10.
A first terminal of the resistor R11 may be connected to the negative pole (-) of the charging interface J1, and a second terminal of the resistor R11, a first terminal of the capacitor C10, and a first terminal of the first sampling resistor R10 may be connected to the gate of the transistor M10. A first pole of the gate of the transistor M10 may be connected to a connection point of the second terminal of the resistor R12 and the first terminal of the resistor R13. A first terminal of the capacitor C11 and a second terminal of the resistor R13 may be connected to the first detection terminal INT. A first terminal of the resistor R12 may be connected to a power supply terminal V10. The second terminal of the capacitor C11, the second pole of the transistor M10, the second terminal of the capacitor C10, and the second terminal of the first sampling resistor R10 may all be connected to GND.
Alternatively, referring to fig. 3 and 4, the control circuit 011 may include: the first detection terminal INT. A device insertion detection circuit including a first sampling resistor R10 may be connected to the first detection terminal INT. Furthermore, the control circuit 011 can further include a control terminal connected to the control terminal of the first switch Q1 and the control terminal of the second switch Q2.
On the premise that the control module 01 is further configured to transmit the turn-off signal to the switch module 02 based on the charging current in the charging loop, as can be seen with reference to the schematic structural diagram of another power supply cabinet shown in fig. 5, the control module 01 may further include: and a second sampling resistor R20.
One end of the second sampling resistor R20 may be connected to the charging loop and the control circuit 011, respectively, and the other end of the second sampling resistor R20 may be connected to the ground GND. Alternatively, the second sampling resistor R20 may be connected to the charging loop through the second switch circuit 022. As with fig. 3 and 5, one end of the second sampling resistor R20 may be connected to the output terminal of the second switch Q2. In other words, the output terminal of the second switch Q2 can be indirectly connected to the ground GND through the second sampling resistor R20.
The control circuit 011 can also be used for collecting the charging current in the charging loop through the second sampling resistor R20 after the switch module 02 controls the power supply 03 and the charging interface J1 to be conducted. And if the charging current is detected to be smaller than the current threshold, transmitting a turn-off signal to the switch module 02 to control the switch module 02 to disconnect the power supply 03 from the power supply interface J1. In other words, the embodiment of the utility model provides a through newly-increased second sampling resistance R20 gather the charging current in the charging loop.
Based on the operation principle of the second sampling resistor R20, the second sampling resistor R20 may also be referred to as a device open detection circuit. In addition, referring to fig. 6, the device disconnection detecting circuit includes a resistor R21 and a capacitor C20 in addition to the first sampling resistor R10. The second switch circuit 022 includes a resistor R30 and a resistor R31 in addition to the second switch Q2.
Wherein, a first terminal of the resistor R30 and a first terminal of the resistor R31 may be connected to a control terminal EN of the control circuit 011. A second terminal of the resistor R30 may be connected to ground GND. A second terminal of the resistor R31 may be connected to the gate of the second switch Q2. A first pole of the second switch Q2 may be connected with the negative pole (-) of the charging interface J1. A second pole of the second switch Q2 may be connected to a first terminal of a second sampling resistor R20 and a first terminal of a resistor R21. A second terminal of the resistor R21 and a first terminal of the capacitor C20 may be connected to the second detection terminal ADC _ CH 1. The second terminal of the capacitor C20 and the second terminal of the second sampling resistor R20 may both be connected to GND. Wherein fig. 4 and 6 also show the signal flow direction, respectively.
Alternatively, referring to fig. 5 and 6, the control circuit 011 may include the second detection terminal ADC _ CH 1. A device disconnection detecting circuit including a second sampling resistor R20 may be connected to the second detection terminal ADC _ CH 1.
Alternatively, as can also be seen with reference to fig. 3 and 5, the positive pole (+) of charging interface J1 may also be connected to detection power supply terminal V0 through diode D1, and the potential of the power supply signal supplied from detection power supply terminal V0 may be smaller than the potential of the power supply signal supplied from charging power supply terminal V1.
In this way, based on the principle of unidirectional conduction of the diode, the detection power supply terminal V0 can continuously provide the power supply signal to the positive terminal (+) of the charging interface J1 when the charging power supply terminal V1 and the positive terminal (+) of the charging interface J1 are not conducting. And the detection power supply terminal V0 may stop supplying the power supply signal to the positive pole (+) of the charging interface J1 when the charging power supply terminal V1 is turned on with the positive pole (+) of the charging interface J1. That is, the detection power source terminal V0 can be protected by the diode D1.
For example, referring to fig. 3 and 5, it is shown that the potential of the power supply signal supplied from the detection power supply terminal V0 is 3.3 volts (V), and the potential of the power supply signal supplied from the charging power supply terminal V1 is 5V.
Optionally, in the embodiment of the utility model provides an in, control module 01 can also be used for if detect external device and charging wire disconnection, then transmits turn-off signal to switch module 02 to control switch module 02 with power 03 with the interface J1 disconnection that charges. For example, the control module 01 may be configured to determine that the charging wire is disconnected from the charging interface J1 if the voltage at the charging interface J1 is detected to be outside the target voltage range.
Alternatively, the target voltage range may be stored in the control module 01 in advance, and the voltage at the charging interface J1 being outside the target voltage range may be: the voltage at the charging interface J1 is greater than the upper limit value of the target voltage range, or less than the lower limit value of the target voltage range. Of course, in some embodiments, the control module 01 may also store a target voltage threshold (i.e., a normal value).
It should be noted that, for a power supply cabinet equipped with a charging cord, there is a risk of being torn apart by some external factors (e.g., human damage). And, only when the maintenance personal was gone to the on-spot of power rack place at present, can discover the phenomenon that the charging wire was torn apart. In the embodiment of the present invention, referring to fig. 7, the power cabinet may further include: a communication module 04.
The control module 01 may further be connected to the communication module 04, and the communication module 04 may further be connected to a backend server (also referred to as a cloud) 10 in a communication manner. The control module 01 may be further configured to control the communication module 04 to transmit the disconnection state information to the background server 10 if it is determined that the charging wire is disconnected from the charging interface J1 based on the voltage at the charging interface J1. The disconnection state information can be used for indicating that the charging wire is disconnected from the charging interface J1, namely indicating that the charging wire is disconnected. Therefore, the background server 10 can reliably and timely detect the disconnection state of the charging wire in the whole process. Furthermore, the background server can send a maintenance command to the terminal held by the maintenance personnel in time, so that the maintenance personnel can be instructed to go to the site to maintain the charging wire of the power supply cabinet, and the maintainability of the charging wire is improved.
Alternatively, referring to fig. 7, the communication module 04 is connected to the control circuit 011 in the control module 01. Accordingly, the control circuit 011 executes a function of controlling the communication module 04 to transmit the disconnection state information to the background server 10 when it is determined that the charging line is disconnected from the charging interface J1.
Optionally, with continued reference to fig. 7, the control module 01 may further include: a voltage sampling circuit 012 and a disconnection detection circuit 013.
The voltage sampling circuit 012 can be connected to the positive electrode (+), the negative electrode (-) of the charging interface J1, and the disconnection detection circuit 013. The voltage sampling circuit 012 can acquire a voltage between the positive pole (+) of the charging interface J1 and the negative pole (-) of the charging interface J1, that is, a voltage at the charging interface J1.
The disconnection detecting circuit 013 can also be connected to the control circuit 011 in the control module 01. The disconnection detecting circuit 013 can transmit the voltage collected by the voltage sampling circuit 012 to the control circuit 011, so that the control circuit 011 can determine whether the charging line is disconnected from the charging interface J1 based on the voltage.
Optionally, fig. 8 is a schematic structural diagram of another power supply cabinet provided in an embodiment of the present invention. As shown in fig. 8, the voltage sampling circuit 012 may include: a plurality of voltage dividing resistors R0. The disconnection detecting circuit 013 may include: a current limiting resistor R1 and a filter capacitor C1.
The plurality of voltage-dividing resistors R0 may be connected in series between the positive pole (+) of the charging interface J1 and the negative pole (-) of the charging interface J1. A first terminal of the current limiting resistor R1 may be connected to the series node, a second terminal of the current limiting resistor R1 and a first terminal of the filter capacitor C1 may be both connected to the second detection terminal ADC _ CH2, and a second terminal of the filter capacitor C1 may be connected to the negative (-) of the charging interface J1. The series node may be a connection point of two series voltage dividing resistors R0.
For example, referring to fig. 8, voltage sampling circuit 012 shown includes two voltage-dividing resistors R0, two voltage-dividing resistors R0 connected in series between a positive pole (+) of charging interface J1 and a negative pole (-) of charging interface J1. A first terminal of the current limiting resistor R1 in the disconnection detecting circuit 013 is connected to a connection point (i.e., a series node) of the two voltage dividing resistors R0.
Based on the structure that fig. 8 shows, the embodiment of the utility model provides a be through setting up the divider resistance R0 of a plurality of series connections in the interface J1 that charges that the charging wire is connected to the voltage of interface J1 department that charges samples. In this way, the voltage between the positive pole (+) of the charging interface J1 and the negative pole (-) of the charging interface J1 collected by the voltage sampling circuit 012 is related to the number of voltage-dividing resistors R0 included and the resistance value of each voltage-dividing resistor R0. For example, in the configuration shown in fig. 8, assuming that the two voltage dividing resistors R0 included in the voltage sampling circuit 012 have the same resistance value, the voltage sampled by the voltage sampling circuit 012 is 1/2 of the voltage between the positive pole (+) of the charging interface J1 and the negative pole (-) of the charging interface J1.
Referring to fig. 1 and 8, if any one of the three charging lines L11, L12, and L13 connected to the charging interface J1 is disconnected from the charging interface J1, the voltage sampled by the voltage dividing resistors R0, that is, the voltage transmitted from the disconnection detecting circuit 013 to the control circuit 011, is out of the target voltage range or deviates from the normal value. So, control circuit 011 can reliably control communication module 04 to send the disconnected state information of charging wire to background server 10 based on the voltage of interface J1 department that charges, realizes detecting the disconnection of charging wire to further improve the maintainability to the charging wire.
Alternatively, as can also be seen in conjunction with fig. 7 and 8, the control circuit 011 can have a third detection terminal ADC _ CH 2. The disconnection detecting circuit 013 can be connected to the third detecting terminal ADC _ CH2 of the control circuit 011.
Optionally, in the embodiment of the utility model provides an in, control module 01 can also be used for if detect external equipment and connect the length of time of charging wire and be greater than long time threshold value, then transmits turn-off signal to switch module 02 to control switch module 02 with power 03 and the interface J1 disconnection that charges. The implementation manner of detecting whether the external device is connected to the charging line by the control module 01 may refer to the above description of the embodiments, which is not repeated herein.
For example, the control module 01 may include: a timer. This control module 01 can be used for if it connects the charging wire to detect external device, then starts the timer to length of time of charging wire is connected to external device is confirmed to the timing length of time through this timer.
Optionally, as can be seen from the foregoing embodiments, the control circuit 011 in the control module 01 may include a timer. Correspondingly, if the control circuit 011 detects that the external device is connected with the charging wire, the timer is started, and the time length of the external device connected with the charging wire is determined according to the timing time length of the timer.
Optionally, the duration threshold may be pre-stored in the control circuit 011, and may also be referred to as a duration limit. For example, assuming that the duration threshold is 10 minutes, the timing by its timer may be started when the control circuit 011 detects that a device is inserted into the charging line. When the time counted by the timer is longer than 10 minutes, the control circuit 011 can drive the switch module 02 to control the charging power supply end V1 to stop supplying the power supply signal to the charging wire, i.e. to turn off the output of the power supply signal. At this time, the charging wire no longer supplies power to the external device.
Through setting up control module 01 and switch module 02 cooperation work to the length of time of charging at restriction terminal can effectively avoid some user to occupy the problem of the charging wire in this power rack for a long time, ensures that the normal lease business of power rack effectively goes on.
Optionally, the control module 01 may also count the usage duration and the number of times of the charging line, and flexibly adjust the duration threshold (i.e., the charging duration limit) based on the counted data.
Optionally, the control circuit 011 described in the above embodiments may include a Micro Controller Unit (MCU). The communication module 04 described in the above embodiments may include a mobile communication module. For example, the mobile communication module may be a 4 th generation 4G mobile communication module, a 5 th generation 5G mobile communication module, or a wireless fidelity (Wi-Fi) module.
The following description is made in connection with the circuit diagram shown in fig. 8 above for the operation principle of the control circuit of the charging cable:
referring to the flowchart of fig. 9, when the control circuit 011 in the control module 01 detects that an external device is inserted, the first switch Q1 and the second switch Q2 included in the switch module 02 can be controlled to be turned on, i.e., the positive pole (+) of the charging interface J1 is controlled to be conducted with the charging power terminal V1, and the negative pole (-) of the charging interface J1 is controlled to be conducted with the pull-down power terminal GND. At this time, the positive electrode (+), the charging power supply terminal V1, the negative electrode (-) of the charging interface J1 and the pull-down power supply terminal GND of the charging interface J1 form a charging circuit. Furthermore, the charging wire in the power supply cabinet can charge the connected external equipment. After the first switch Q1 and the second switch Q2 are turned on, the control circuit 011 can start its timer to count. The device open detection circuit may begin monitoring the charging current in the charging loop. If the timing duration of the timer is longer than a duration threshold value pre-stored in the control circuit 011, the control circuit 011 can determine that the terminal is charged overtime, and at this time, the control circuit 011 can control the switches to control the first switch Q1 and the second switch Q2 to be turned off. Furthermore, the charging wire in the power supply cabinet can stop charging the connected external equipment. Alternatively, if the charging current transmitted by the device disconnection detecting circuit to the third detecting terminal ADC _ CH2 of the control circuit 011 is smaller than the current threshold pre-stored in the control circuit 011, the control circuit 011 can control the first switch Q1 and the second switch Q2 to be turned off. Furthermore, the charging wire in the power supply cabinet can stop charging the connected external equipment. Of course, if the time length of the timer does not exceed the time length threshold, the control circuit 011 can continue to control the timer to count time. If the charging current is not less than the current threshold, the device disconnect detection circuit may continue to monitor the charging current.
To sum up, the embodiment of the utility model provides a power supply cabinet, this power supply cabinet's the interface that charges is connected with the charging wire, and this power supply cabinet includes control module, switch module and power. Wherein, control module can be when external equipment inserts the charging wire, and automatic control switch module switches on the power with the interface that charges. After the power supply is connected with the charging interface, the power supply can charge the external equipment through the charging wire connected to the charging interface. So can confirm, the embodiment of the utility model provides a power cabinet not only the structure can be comparatively simple, and operation flow is comparatively succinct moreover, has improved the interactivity of user with the power cabinet.
It should be understood that in the embodiments of the present invention, the terms "first", "second", third "and" fourth "are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The meaning of "at least one" means one or more than one. The meaning of "plurality" means two or more.
It should be understood that in embodiments of the present invention, and/or "means that there may be three relationships, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The above description is only an optional embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A power supply cabinet is characterized in that a charging interface of the power supply cabinet is connected with a charging wire; the power supply cabinet includes: the device comprises a control module, a switch module and a power supply;
the control module is respectively connected with the charging interface and the switch module, and is used for transmitting a starting signal to the switch module if it is determined that an external device is connected with the charging line based on the voltage at the charging interface;
the switch module is further connected with the power supply and the charging interface respectively, and the switch module is used for controlling the power supply to be conducted with the charging interface based on the starting signal.
2. The power supply cabinet of claim 1, wherein the control module is configured to determine that an external device is connected to the charging line if it is detected that the voltage at the charging interface is greater than a voltage threshold.
3. The power supply cabinet of claim 2, wherein the control module comprises: a first sampling resistor and a control circuit;
one end of the first sampling resistor is connected with the negative electrode of the charging interface and the control circuit respectively, and the other end of the first sampling resistor is connected with a grounding end;
the control circuit is connected with the switch module and used for collecting the voltage at the charging interface through the first sampling resistor and transmitting a starting signal to the switch module if the voltage at the charging interface is detected to be greater than a voltage threshold value.
4. The power supply cabinet according to any one of claims 1 to 3, wherein the control module is further configured to transmit a turn-off signal to the switch module if it is detected that a duration of connection of the external device to the charging line is greater than a duration threshold value, or the external device is disconnected from the charging line;
the switch module is further used for controlling the power supply to be disconnected with the charging interface based on the turn-off signal.
5. The power supply cabinet of claim 4, wherein the control module comprises a timer;
the control module is used for starting the timer if detecting that the external equipment is connected with the charging wire, and determining the time length of the external equipment connected with the charging wire through the timing time length of the timer.
6. The power supply cabinet according to claim 4, wherein the control module is configured to collect a charging current in a charging loop after the switch module controls the power supply and the charging interface to be switched on, and determine that the external device is disconnected from the charging wire if it is detected that the charging current is smaller than a current threshold; the charging loop is a loop between the power supply and the charging interface.
7. The power supply cabinet of claim 6, wherein the control module comprises: a second sampling resistor and a control circuit;
one end of the second sampling resistor is connected with the charging loop and the control circuit respectively, and the other end of the second sampling resistor is connected with a grounding end;
the control circuit is further connected with the switch module, and the control circuit is used for collecting the charging current in the charging loop through the second sampling resistor after the switch module controls the power supply to be connected with the charging interface, and transmitting the turn-off signal to the switch module if the charging current is detected to be smaller than a current threshold value.
8. The power cabinet of any one of claims 1 to 3, further comprising: a communication module;
the control module is further connected with the communication module, the communication module is in communication connection with a background server, and the control module is further used for controlling the communication module to send disconnection state information to the background server if the disconnection of the charging wire and the charging interface is determined based on the voltage at the charging interface, wherein the disconnection state information is used for indicating the disconnection of the charging wire and the charging interface.
9. The power supply cabinet of claim 8, wherein the control module is configured to determine that the charging wire is disconnected from the charging interface if it is detected that the voltage at the charging interface is outside of a target voltage range.
10. The power supply cabinet of any one of claims 1 to 3, wherein the switch module comprises: a first switching circuit and a second switching circuit;
the first switch circuit is respectively connected with the control module, the positive electrode of the power supply and the positive electrode of the charging interface, and the first switch circuit is used for responding to the starting signal and controlling the conduction of the positive electrode of the charging interface and the positive electrode of the power supply;
the second switch circuit is respectively connected with the control module, the negative electrode of the charging interface and the grounding terminal, and the second switch circuit is used for responding to the starting signal and controlling the conduction of the negative electrode of the charging interface and the grounding terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120937791.6U CN215185946U (en) | 2021-04-30 | 2021-04-30 | Power supply cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120937791.6U CN215185946U (en) | 2021-04-30 | 2021-04-30 | Power supply cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215185946U true CN215185946U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120937791.6U Active CN215185946U (en) | 2021-04-30 | 2021-04-30 | Power supply cabinet |
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| Country | Link |
|---|---|
| CN (1) | CN215185946U (en) |
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2021
- 2021-04-30 CN CN202120937791.6U patent/CN215185946U/en active Active
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