CN217607554U - Uninterrupted power supply device and power supply equipment - Google Patents
Uninterrupted power supply device and power supply equipment Download PDFInfo
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- CN217607554U CN217607554U CN202221084936.3U CN202221084936U CN217607554U CN 217607554 U CN217607554 U CN 217607554U CN 202221084936 U CN202221084936 U CN 202221084936U CN 217607554 U CN217607554 U CN 217607554U
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Abstract
The utility model provides an uninterrupted power supply device and power supply equipment, which relate to the technical field of power supply and comprise a power supply control module, a first power supply interface, a second power supply interface and an output interface which are connected with the power supply control module; the first power supply interface is used for being connected with a battery, the second power supply interface is used for being connected with an adapter, and the output interface is used for being connected with a load; the power supply control module comprises a first power supply circuit matched with the first power supply interface and a second power supply circuit matched with the second power supply interface; the first power supply circuit comprises a switch circuit, a control end of the switch circuit is connected with the second power supply interface and used for acquiring a power supply signal generated by the second power supply interface and triggering the first power supply circuit to be switched on or switched off according to the power supply signal so as to control the power supply control module to supply power to the load. When the battery and the adapter are simultaneously connected, the switch circuit can trigger the first power supply circuit to be switched on or switched off, and further the problem of consuming partial electric quantity of the battery is avoided.
Description
Technical Field
The utility model belongs to the technical field of the power supply technique and specifically relates to an uninterrupted power supply device and power supply unit are related to.
Background
When the adapter and the battery supply power to the load at the same time, the conventional DC plug on the market generally supplies power to the load according to the design of automatically disconnecting the battery circuit after the adapter is connected, the power of the battery is not consumed, but the design can cause the problem of resetting caused by instantaneous power failure of the whole power supply system when the adapter is disconnected and the circuit is automatically switched to the battery for power supply.
Therefore, in the prior art, a diode is added in an original circuit to enable the circuit to form a backflow so as to avoid the problem of instant reset when the adapter is plugged, but due to the diode in the design, the circuit of the battery cannot be cut off even after the adapter is plugged, and further, when the adapter is plugged to supply power to a load, the situation of power supply of the battery is easy to occur, and the electric quantity of the battery is lost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an uninterrupted power supply device and power supply unit to avoid when inserting the adapter and supplying power to the load, the electric quantity of loss battery.
In a first aspect, the present invention provides an uninterruptible power supply device, which includes a power supply control module, and a first power supply interface, a second power supply interface and an output interface connected to the power supply control module; the first power supply interface is used for being connected with a battery, the second power supply interface is used for being connected with an adapter, and the output interface is used for being connected with a load; the power supply control module comprises a first power supply circuit matched with the first power supply interface and a second power supply circuit matched with the second power supply interface; the first power supply circuit comprises a switch circuit, a control end of the switch circuit is connected with the second power supply interface and used for acquiring a power supply signal generated by the second power supply interface and triggering the first power supply circuit to be switched on or switched off according to the power supply signal so as to control the power supply control module to supply power to the load.
In an alternative embodiment, the switching circuit includes a first switching unit, a second switching unit, and a third switching unit connected in sequence; the control end of the first switch unit is connected to the control end of the switch circuit and used for acquiring a power supply signal; the output end of the first switch unit is connected with the control end of the second switch unit, and the output end of the second switch unit is connected with the control end of the third switch unit.
In an optional embodiment, the first switch unit and the second switch unit are triode-based switch units, and the third switch unit is a MOS transistor-based switch unit.
In an optional embodiment, the transistor of the first switching unit is an NPN transistor; the base electrode of the NPN triode is connected to the control end of the switch circuit, the collector electrode of the NPN triode is connected to the control end of the second switch unit, and the emitter electrode of the NPN triode is grounded.
In an optional embodiment, the transistor of the second switch unit is a PNP transistor; the base electrode of the PNP triode is used as the control end of the second switch unit and is connected with the output end of the first switch unit, and the collector electrode of the PNP triode is used as the output end of the second switch unit and is connected with the control end of the third switch unit.
In an optional embodiment, the MOS transistor of the third switching unit is a P-channel MOS transistor; the grid electrode of the P-channel MOS tube is used as the control end of the third switch unit and is connected with the output end of the second switch unit, and the drain electrode and the source electrode of the P-channel MOS tube are connected in series on a connecting passage of the first power supply interface and the output interface.
In an alternative embodiment, the P-channel MOS transistor is further provided with a parasitic diode.
In an optional embodiment, the second power supply interface is a DC power supply interface; and the control end of the switching circuit is connected with the positive input end of the DC power interface to obtain a power supply signal.
In an alternative embodiment, the second power supply circuit includes a protection diode matched to the DC power interface; the anode of the protection diode is connected with the negative input end of the DC power interface, and the cathode of the protection diode is grounded.
In a second aspect, the present invention provides a power supply apparatus, which is provided with the above uninterruptible power supply device.
The embodiment of the utility model provides a following beneficial effect has been brought:
the embodiment of the utility model provides an uninterrupted power supply device and power supply equipment, in the uninterrupted power supply device is provided with a power supply control module, and a first power supply interface, a second power supply interface and an output interface which are connected with the power supply control module; the first power supply interface is used for being connected with a battery, the second power supply interface is used for being connected with an adapter, and the output interface is used for being connected with a load; the power supply control module comprises a first power supply circuit matched with the first power supply interface and a second power supply circuit matched with the second power supply interface; when the battery and the adapter are simultaneously connected, the switching circuit can trigger the connection or the disconnection of the first power supply circuit, and further avoid the problem of consuming partial electric quantity of the battery.
Other features and advantages of the invention will be set forth in the description which follows, or in part may be learned by the description or may be learned by practice of the invention.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of a battery circuit;
FIG. 2 is a schematic circuit diagram of another battery circuit;
fig. 3 is a schematic control structure diagram of an uninterruptible power supply unit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a switching circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of an uninterruptible power supply device according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
When the adapter and the battery supply power to the load at the same time, the conventional DC plug in the market generally supplies power to the load by the adapter without consuming the electric quantity of the battery according to the design of automatically disconnecting the battery circuit after the adapter is connected. Fig. 1 shows a schematic circuit diagram of a conventional battery circuit, as shown IN fig. 1, the battery circuit includes an adapter interface DC _ IN and a battery interface BAT _ IN, where the adapter interface DC _ IN is usually a short circuit between two pins, such as pin 2 and pin 4 IN fig. 1, when no adapter is connected, and the two pins are pushed apart after the adapter is connected, and at this time, the negative pole of the battery cannot form a backflow, so IN the circuit, power is supplied through the adapter after the adapter is connected. However, in the design, the circuit cannot normally flow back when the adapter is disconnected, so that the whole power supply system is powered off instantly, and then the circuit is automatically switched to be powered by the battery, and the stability of the circuit design is poor.
For this reason, in the prior art, a diode is added to the primary circuit, specifically, fig. 2 shows a circuit schematic diagram of another common battery circuit, as shown in fig. 2, a diode D2 is added, and by adding the diode D2, a backflow can be formed to solve the problem of the adapter plug-pull instant reset, but in this case, there is a problem of adapter contention with the battery, for example, when the battery voltage > the adapter, the battery is always powered; when battery voltage = adapter voltage, voltage fluctuations may cause both to supply power at the same time; both of these situations can result in the circuit consuming a portion of the battery even if the adapter is inserted.
Based on the problem, the embodiment of the utility model provides an uninterrupted power supply device and power supply unit, this technique can be used in the scene of power supply.
In order to understand the present embodiment, first, a detailed description is given to an uninterruptible power supply device disclosed in an embodiment of the present invention, by which when a battery and an adapter are simultaneously connected, a part of electric quantity of the battery is prevented from being consumed; fig. 3 shows a schematic structural diagram of an uninterruptible power supply apparatus, as shown in fig. 3, the uninterruptible power supply apparatus includes a power supply control module 101, and a first power supply interface 102, a second power supply interface 103, and an output interface 104, to which the power supply control module 101 is connected.
Specifically, the first power supply interface 102 is used for connecting with a battery, the second power supply interface 103 is used for connecting with an adapter, and the output interface 104 is used for connecting with a load; the power supply control module 101 comprises a first power supply circuit 1011 matching the first power supply interface 102 and a second power supply circuit 1012 matching the second power supply interface 103.
Further, the first power supply circuit 1011 includes a switch circuit 1013, and a control terminal of the switch circuit 1013 is connected to the second power supply interface 103, and is configured to obtain a power supply signal generated by the second power supply interface 103, and trigger the first power supply circuit 1011 to turn on or turn off according to the power supply signal, so as to control the power supply control module 101 to supply power to the load.
During specific implementation, when the adapter is not connected with the second power supply interface 103, a power supply signal cannot be generated at the second power supply interface, the second power supply circuit does not work, the switching circuit of the first power supply circuit cannot acquire the power supply signal, and the switching circuit can trigger the first power supply circuit to be switched on, so that the battery connected with the first power supply interface supplies power to the load.
When the second power supply interface 103 is connected to the adapter, the adapter includes a corresponding adapter power supply signal, and the switch circuit 1013 can trigger the first power supply circuit to be turned off by the adapter power supply signal, so as to disconnect the power supply circuit corresponding to the battery, thereby controlling the adapter to supply power to the load through the second power supply circuit.
The embodiment of the utility model provides an uninterrupted power supply device, be provided with the power supply control module in the uninterrupted power supply device to and the first power supply interface 102, the second power supply interface 103 and the output interface 104 that power supply control module 101 connects; the first power supply interface 102 is used for being connected with a battery, the second power supply interface 103 is used for being connected with an adapter, and the output interface 104 is used for being connected with a load; the power supply control module 101 comprises a first power supply circuit 1011 matching the first power supply interface 102, and a second power supply circuit 1012 matching the second power supply interface 103; the first power supply circuit 1011 includes a switch circuit 1013, a control end of the switch circuit 1013 is connected to the second power supply interface 103, and is configured to obtain a power supply signal generated by the second power supply interface 103, and trigger the first power supply circuit 1011 to be turned on or turned off according to the power supply signal, so as to control the power supply control module 101 to supply power to the load.
Furthermore, the embodiment of the present invention provides a switching circuit, which includes a first switching unit, a second switching unit and a third switching unit connected in sequence;
the control end of the first switch unit is connected to the control end of the switch circuit and used for acquiring the power supply signal;
the output end of the first switch unit is connected with the control end of the second switch unit, and the output end of the second switch unit is connected with the control end of the third switch unit.
For easy understanding, fig. 4 also shows a schematic structural diagram of a switching circuit on the basis of fig. 3, and the structure of the switching circuit 1013 is described in detail.
As shown in fig. 4, the switching circuit 1013 includes a first switching unit 201, a second switching unit 202, and a third switching unit 203 connected in this order;
in a specific implementation, after the second power supply interface 103 is connected to the adapter, the adapter includes a corresponding adapter power supply signal, the control terminal of the first switch unit in the switch circuit 1013 is turned on according to the power supply signal generated by the second power supply interface 103, and then the turning on of the second switch unit is triggered according to the turning on of the first switch unit, and the turning off of the third switch unit is triggered by the turning on of the second switch unit.
Further, the first switch unit and the second switch unit are triode-based switch units, and the third switch unit is a MOS-tube-based switch unit.
The triode of the first switch unit is an NPN triode; the triode of the second switch unit is a PNP triode; the MOS tube of the third switch unit is a P-channel MOS tube.
For convenience of understanding, fig. 5 shows a circuit schematic diagram of an uninterruptible power supply apparatus, as shown IN fig. 5, BAT _ IN fig. 5 is the first power supply interface, OUT is the output interface, and DC _ IN is the second power supply interface. The pin 3 corresponding to the DC _ IN is an anode of the second power supply interface, and the pin 4 is a cathode of the second power supply interface. In fig. 5, Q4 is an NPN transistor included in the first switching unit, Q3 is a PNP transistor included in the second switching unit, and Q1 is an MOS transistor included in the third switching unit.
In a specific implementation, a base of the NPN transistor Q4 is connected to the control terminal of the switching circuit 1013 through the resistor R5, a collector of the NPN transistor Q4 is connected to the control terminal of the second switching unit through the resistor R4, and an emitter of the NPN transistor Q4 is grounded. Further, a pull-down resistor R6 is connected in parallel between the base of the NPN transistor Q4 and the collector of the NPN transistor Q4. Further, the base of the PNP triode Q3 serves as the control terminal of the second switch unit and is connected to the output terminal of the first switch unit, and the collector of the PNP triode Q3 serves as the output terminal of the second switch unit and is connected to the control terminal of the third switch unit. Further, the collector of the PNP transistor Q3 is also grounded through the resistor R7 and the capacitor C2. Further, the gate of the P-channel MOS Q1 serves as the control terminal of the third switching unit and is connected to the output terminal of the second switching unit, and the drain and the source of the P-channel MOS Q1 are connected in series to the connection path between the first power supply interface 102 and the output interface 104.
In a specific implementation, the second power supply interface 103 may be a DC power supply interface; the control terminal of the switching circuit 1013 is connected to the positive input terminal of the DC power interface to obtain the power supply signal. The adapter may be a DC plug and the second power supply interface 103 is used for connecting with the DC plug.
When the adapter is connected to the second power supply interface 103 (i.e., the DC _ IN terminal IN fig. 5), the interface of the adapter pushes the second power supply interface 103 (i.e., the pin 2 and the pin 4 at the DC _ IN terminal IN fig. 5) away, and at this time, the power supply signal cannot pass through the second power supply interface 103 to form a path for the first power supply circuit 1011, and IN addition, the second power supply interface 103 generates the power supply signal corresponding to the adapter, and at this time, the control terminal of the first switch unit has the power supply signal, and since the first switch unit is an NPN transistor, current flows into the base of the NPN transistor at this time, and at this time, the first switch unit is turned on.
Further, since the control terminal of the second switch unit (i.e., the base of the PNP transistor) is connected to the output terminal of the first switch unit (i.e., the collector of the NPN transistor), the first switch unit pulls down the level of the base of the second switch unit, at this time, the power supply signal corresponding to the control terminal of the second switch unit is at a low level, and the second switch unit is a PNP transistor, according to the characteristic that the PNP transistor is turned on when the input signal is at a low level, at this time, the PNP transistor is turned on, that is, the second switch unit is turned on. Further, when the PNP transistor is turned on, the emitter and collector of the PNP transistor are also turned on, i.e., there is a voltage at the collector of the PNP transistor.
Further, when the first power supply interface is not connected to the battery, there is no voltage at the source of the P-channel MOS transistor Q1 corresponding to the third switching unit, and there is a voltage at the collector of the PNP transistor, and since the control terminal of the third switching unit (i.e., the gate of the P-channel MOS transistor Q1) is connected to the output terminal of the second switching unit (i.e., the collector of the PNP transistor), the gate of the P-channel MOS transistor Q1 is at a high level, and the P-channel MOS transistor Q1 is turned off according to the characteristic that the gate of the P-channel MOS transistor Q1 is at a low level.
Further, the P-channel MOS transistor Q1 corresponding to the third switching unit is further provided with a parasitic diode, so that when the second switching unit is turned on, a current corresponding to the power supply signal flows back through the parasitic diode of the third switching unit to turn on the second switching unit.
Furthermore, after the battery is connected to the first power supply interface 102, a power supply signal of the battery is generated on the first power supply interface 102, and since the turn-off of the third switching unit is determined according to the turn-on of the first switching unit, when the adapter is connected to the second power supply interface 103, the third switching unit is always in the turn-off state, and when the third switching unit is turned off, the drain and the source of the P-channel MOS transistor Q1 corresponding to the third switching unit are also in the turn-off state, and at this time, the electric quantity of the battery does not flow to the output interface 104, so that the battery supplies power to the load connected to the output port.
Specifically, when the voltage of the battery is less than or equal to the voltage of the adapter, the battery does not supply power to the load because the third switching unit is turned off; when the battery voltage > the voltage of the adapter, the battery does not supply power to the load either because the third switching unit is turned off. That is, regardless of whether the voltage value corresponding to the power supply signal of the battery is greater than or equal to the voltage value corresponding to the power supply signal of the adapter, when the adapter is connected to the second power supply interface 103, the load connected to the output interface 104 is always supplied with power from the adapter.
In a specific implementation, a reverse blocking diode D1 is further disposed on a connection path between the positive electrode of the DC power interface corresponding to the second power supply interface 103 and the output interface 104, and when the adapter connected to the second power supply interface 103 supplies power to a load, current flows from the positive electrode of the second power supply interface 103, passes through the reverse blocking diode D1, and flows into the output interface 104 to supply power to the load.
Further, a bidirectional zener diode and a voltage stabilizing capacitor C4 are connected in parallel between the DC power interface corresponding to the second power supply interface 103 and the connection path of the output interface 104, and are used for stabilizing the voltage between the second power supply interface 103 and the output interface 104. Further, the voltage stabilizing capacitor C4 is also grounded.
Further, the second power supply circuit 1012 includes a protection diode D2 matched with the DC power interface; the anode of the protection diode D2 is connected with the negative electrode input end of the DC power supply interface, and the cathode of the protection diode D2 is grounded.
In a specific implementation, when the battery is connected to the first power supply interface 102 and the adapter is removed from the second power supply interface 103, at the instant when the adapter is removed, the second power supply interface 103 is still not closed, and at this time, the adapter does not supply power to the load, that is, at this time, no power supply signal is generated at the second power supply interface 103, the first switch unit and the second switch unit are both turned off, and at this time, no power supply signal is generated at the control end of the third switch unit, at this time, the gate of the P-channel MOS transistor Q1 is at a low level, and at this time, the third switch unit is turned on.
Furthermore, because the battery is connected to the first power supply interface 102, a power supply signal corresponding to the battery is generated at the first power supply interface 102, and the power supply signal can pass through the third switching unit, and in addition, because of the existence of the protection diode D2, the power supply signal corresponding to the battery can form a backflow, and after passing through the connection path where the protection diode D2 is located, the power supply signal flows back to the negative electrode of the first power supply interface 102, so that the battery can supply power to the load connected to the output interface 104.
When the adapter is completely removed from the second power supply interface 103, the second power supply interface 103 is short-circuited, and at this time, the power supply signal corresponding to the battery does not pass through the protection diode D2 any more, and directly passes through the second power supply interface 103 to form a backflow, so as to supply power to the load connected to the output interface 104.
Furthermore, a fuse F1 is connected in series to a connection path between the source of the P-channel MOS transistor Q1 and the first power supply interface 102, and the fuse F1 is used to generate a large current in the circuit and instantaneously interrupt the circuit, thereby functioning as a protection circuit. Further, a resistor R11 is connected in parallel to a connection path between the first power supply interface 102 and the output interface 104.
It should be understood that the circuit diagram shown in fig. 5 is only one possible real-time manner of the embodiment of the present invention, and in other embodiments, the model and parameters of each device may be set according to the actual use condition, which is not limited by the embodiment of the present invention.
The embodiment of the utility model provides an uninterrupted power supply device, switch circuit 1013 includes the first switch unit, second switch unit and the third switch unit that connect gradually; the control terminal of the first switching unit is connected to the control terminal of the switching circuit 1013 for acquiring the power supply signal; the output end of the first switch unit is connected with the control end of the second switch unit, and the output end of the second switch unit is connected with the control end of the third switch unit. The power supply signal generated at the second power supply interface 103 triggers the on/off of the first switching unit, thereby controlling the on/off of the second switching unit and the third switching unit. In addition, the third switching unit is a P-channel MOS transistor Q1, and a drain and a source of the P-channel MOS transistor Q1 are connected in series to a connection path between the first power supply interface 102 and the output interface 104, that is, when the third switching unit is turned on, the load can be supplied with power from the battery. When the second power supply interface 103 generates a power supply signal, the first switch unit is turned on, and at this time, the third switch unit is turned off, so that when the adapter and the battery are simultaneously connected, the first power supply circuit 1011 corresponding to the first power supply interface 102 for connecting with the battery is not turned on, and further when the adapter is inserted to supply power to a load, the condition of battery power supply cannot occur, and further, the electric quantity of the battery cannot be lost.
The embodiment of the present invention provides a power supply device, which is configured with the above uninterruptible power supply device, and the description of the power supply device can refer to the embodiment of the above uninterruptible power supply device, which is not repeated herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The uninterrupted power supply device is characterized by comprising a power supply control module, a first power supply interface, a second power supply interface and an output interface, wherein the first power supply interface, the second power supply interface and the output interface are connected with the power supply control module; the first power supply interface is used for being connected with a battery, the second power supply interface is used for being connected with an adapter, and the output interface is used for being connected with a load;
the power supply control module comprises a first power supply circuit matched with the first power supply interface and a second power supply circuit matched with the second power supply interface;
the first power supply circuit comprises a switch circuit, and a control end of the switch circuit is connected with the second power supply interface and used for acquiring a power supply signal generated by the second power supply interface and triggering the first power supply circuit to be switched on or switched off according to the power supply signal so as to control the power supply control module to supply power to the load.
2. The uninterruptible power supply device according to claim 1, wherein the switching circuit includes a first switching unit, a second switching unit, and a third switching unit connected in this order;
the control end of the first switch unit is connected to the control end of the switch circuit and used for acquiring the power supply signal;
the output end of the first switch unit is connected with the control end of the second switch unit, and the output end of the second switch unit is connected with the control end of the third switch unit.
3. The uninterruptible power supply according to claim 2, wherein the first switching unit and the second switching unit are transistor-based switching units, and the third switching unit is a MOS transistor-based switching unit.
4. The uninterruptible power supply according to claim 3, wherein the transistor of the first switching unit is an NPN transistor;
the base electrode of the NPN triode is connected to the control end of the switch circuit, the collector electrode of the NPN triode is connected to the control end of the second switch unit, and the emitter electrode of the NPN triode is grounded.
5. The uninterruptible power supply according to claim 4, wherein the transistor of the second switching unit is a PNP transistor;
the base electrode of the PNP triode is used as the control end of the second switch unit and is connected with the output end of the first switch unit, and the collector electrode of the PNP triode is used as the output end of the second switch unit and is connected with the control end of the third switch unit.
6. The uninterruptible power supply device according to claim 5, wherein the MOS transistor of the third switching unit is a P-channel MOS transistor;
the grid electrode of the P-channel MOS tube is used as the control end of the third switch unit and is connected with the output end of the second switch unit, and the drain electrode and the source electrode of the P-channel MOS tube are connected in series on the connection circuit of the first power supply interface and the output interface.
7. The uninterruptible power supply of claim 6, wherein the P-channel MOS transistor is further provided with a parasitic diode.
8. The uninterruptible power supply of claim 1, wherein the second power supply interface is a DC power supply interface;
and the control end of the switching circuit is connected with the positive input end of the DC power interface so as to obtain the power supply signal.
9. The uninterruptible power supply of claim 8, wherein the second power supply circuit includes a protection diode matched to the DC power interface;
and the anode of the protection diode is connected with the negative electrode input end of the DC power supply interface, and the cathode of the protection diode is grounded.
10. A power supply apparatus characterized by: the power supply apparatus is provided with the uninterruptible power supply device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221084936.3U CN217607554U (en) | 2022-05-06 | 2022-05-06 | Uninterrupted power supply device and power supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221084936.3U CN217607554U (en) | 2022-05-06 | 2022-05-06 | Uninterrupted power supply device and power supply equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217607554U true CN217607554U (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221084936.3U Expired - Fee Related CN217607554U (en) | 2022-05-06 | 2022-05-06 | Uninterrupted power supply device and power supply equipment |
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| Country | Link |
|---|---|
| CN (1) | CN217607554U (en) |
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2022
- 2022-05-06 CN CN202221084936.3U patent/CN217607554U/en not_active Expired - Fee Related
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Granted publication date: 20221018 |