JP2018023267A - Electronic device with backup power supply and method for charging and discharging backup power supply - Google Patents

Abstract

An electronic device having a backup power supply and a method for charging and discharging the backup power supply are disclosed. The electronic device includes a power consumption module, a main power supply module, and a backup power supply module including a first power storage unit and a first bypass unit. The first power storage unit receives electricity provided by the external power supply via the main power supply module when the external power supply supplies power normally, and when the external power supply stops supplying power, The power stored in the power consumption module is provided. The first bypass unit provides a first bypass path to limit the voltage potential provided to the first power storage unit by the main power supply module. The first bypass unit includes a first control end for selectively conducting the first bypass path according to whether the external power supply normally supplies power. [Selection] Figure 1

Description

  The present disclosure relates to an electronic device having a backup power source and a method for charging and discharging the backup power source, and more specifically, to an electronic device capable of operating the backup power source while the external power source stops supplying power. .

  Although the operation of an electronic device requires electricity, current common designs cannot guarantee that there will still be good corrective action when the electronic device fails. In the case of an event data recorder, the event data recorder is used to record video related to driving conditions to provide evidence for an accident. Electricity for the operation of the event data recorder is usually obtained from the vehicle. The event data recorder does not have a backup power source or has a backup power source that does not store enough electricity, and accidents that cause the electricity provided to the event data recorder by the vehicle to be suddenly interrupted If this situation occurs, failure to close the image file can be caused, resulting in damage to the image file and even that the image file does not store the record associated with the accident.

  Thus, when designing an electronic device such as an event data recorder, the manufacturer must be able to maintain some of the functionality's operation in the event of a power outage or if there is an abnormality in the power source. Face real challenges to be solved, such as the need to prevent the data recorder from storing the proper files. In other words, how to successfully terminate the shutdown procedure for an electronic product when a power failure suddenly occurs is a problem to be faced by the manufacturer. This challenge causes the people involved in the accident to own the event data recorder, but that event data recorder is useless at a critical moment.

  The present disclosure is intended to provide an electronic device having a backup power source and a method for charging and discharging the backup power source in order to solve the technical problems in the prior art in which electronic products cannot operate due to their lack of electricity. doing.

  According to one or more embodiments, the present disclosure provides an electronic device having a backup power source, and the electronic device is electrically connected to an external power source and includes a power consumption module, a main power supply module, and a backup power supply. Includes modules. The main power supply module is electrically connected to the external power source for supplying power to the power consuming module. The backup power source includes a first power storage unit, a second power storage unit, a first bypass unit, and a second bypass unit. The first power storage unit is electrically connected to the main power supply module. The first power storage unit receives electricity provided by the external power supply via the main power supply module when the external power supply normally provides power. The first power storage unit provides power stored in the power consumption module when the external power supply stops providing power. The first bypass unit is connected in parallel to the first power storage unit. The first bypass unit provides a first bypass path for limiting a voltage potential applied to the first power storage unit by the main power supply module. The first bypass unit is electrically connected to the external power source and selectively conducts the first bypass path according to whether or not the external power source normally provides power. including.

  According to one or more embodiments, the present disclosure provides a method for charging and discharging a backup power source, the method being applied to an electronic device having the backup power source, wherein the electronic device is electrically connected to an external power source. And including a power consumption module and a backup power supply module, wherein the method is configured to supply electricity provided by the external power source when the external power source normally provides power, the power consumption module and the backup power supply module. Providing a bypass path for the backup power supply module to limit a voltage potential applied to the backup power supply module when the backup power supply module is charged by electricity provided by the external power source. Conducting, and said external When the source stops supplying power, the not conduct the bypass path, and the backup power supply module, the power consumption module includes providing a stored electric power.

  According to the electronic device having the backup power source and the method for charging and discharging the backup power source provided in the present disclosure, when the external power source supplies power normally, the first bypass unit includes: The amount of electricity stored in the first storage unit and the amount of electricity stored in the second storage unit can be controlled and are not affected by the equivalent resistor of the first storage unit. As described above, the main power supply module limits the voltage potential applied to the first power storage unit and the second power storage unit, respectively, and the first power storage unit consumes the stored power as power. When the external power supply stops supplying power to provide to the module, the first bypass unit is configured to provide the first power storage unit. In parallel with the first power storage unit so that the electricity stored in the battery is not leaked through the first bypass unit and the stored electricity can be completely provided by the power consuming module. Not connected.

The present disclosure will be more fully understood from the accompanying drawings, which are given only by way of detailed description and illustration given below and thus do not limit the present disclosure.
1 is a block diagram of an electronic device according to an embodiment of the present disclosure. FIG. 6 is a block diagram of an electronic device according to another embodiment of the present disclosure. 6 is a flowchart of a method for charging and discharging a backup power source in an embodiment of the present disclosure. 6 is a flowchart of a method for charging and discharging a backup power source according to another embodiment of the present disclosure.

  In the following detailed description, for purposes of explanation, numerical details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent, however, that one or more embodiments may be practiced without these specified details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.

  Referring to FIG. 1, FIG. 1 is a block diagram of an electronic device in one embodiment of the present disclosure. As shown in FIG. 1, the electronic device 10 includes a main power supply module 11, a power consumption module 13, and a backup power supply module 15. For example, the main power supply module 11 is a power transfer interface, a power converter or other suitable component. The main power supply module 11 is electrically connected to the external power supply 20. The main power supply module 11 converts the electricity provided by the external power source 20 into the standard electricity required by the power consumption module 13 and then provides that electricity to the power consumption module 13 for use. And a part of the electricity is provided to charge the backup power supply module 15.

  The backup power supply module 15 includes a first power storage unit 151, a second power storage unit 152, a first bypass unit 153, and a second bypass unit 154. The first power storage unit 151 and the main power supply module 11 are connected to the first node N1. Second power storage unit 152 and first power storage unit 151 are connected to second node N2. When the external power supply 20 supplies power normally, the first power storage unit 151 and the second power storage unit 152 are charged via the main power supply module 11 in order to be charged by the electricity provided by the external power supply 20. It receives electricity provided by the external power source 20. When the external power supply 20 stops supplying power, the first power storage unit 151 and the second power storage unit 152 provide the stored electricity to the power consuming module 13. The power consumption module 13 includes other elements in the electronic device 10 that consumes power. In the case of an event data recorder, the power consumption module 13 is, for example, an event data recorder processing system, another suitable processing system, or other suitable component that consumes electricity.

  The first bypass unit 153 is connected in parallel to the first power storage unit 151 and provides a first bypass path to limit the voltage potential applied to the first power storage unit 151 by the main power supply module 11. . The first bypass unit 153 includes a first control end 153 a that is electrically connected to the external power supply 20. The first bypass unit 153 selectively enables the first bypass path according to whether or not the external power supply 20 supplies power normally, that is, the first node N1 and the second node N2 The path between is conductive. The second bypass unit 154 is connected in parallel to the second power storage unit 152 and provides a second bypass path to limit the voltage potential applied to the second power storage unit 152 by the main power supply module 11. . The second bypass unit 154 includes a second control end 154 a that is electrically connected to the external power supply 20. The second bypass unit 154 can selectively use the second bypass path according to whether or not the external power supply 20 supplies power normally, that is, between the second node N2 and the reference voltage end. The path between them becomes conductive.

  In other words, when the external power supply 20 normally supplies power, the voltage potential applied to the first power storage unit 151 and the voltage potential applied to the second power storage unit 152 by the main power supply module 11 are limited. Therefore, the first bypass unit 153 is electrically connected to the first node N1 and the second node N2, and the second bypass unit 154 is electrically connected to the second node N2 and the reference voltage end. Is done. Actually, when the external power supply 20 supplies power normally, the first bypass unit 153 and the second bypass unit 154 are charged by the same voltage value of the first livestock unit 151 and the second power storage unit 152. So that the electricity provided by the external power source 20 is evenly allocated to the first livestock unit 151 and the second power storage unit 152 so that they are not affected by their equivalent resistors.

  When the first power storage unit 151 and the second power storage unit 152 supply power to the power consumption module 13 instead of the external power supply 20 when the external power supply 20 stops supplying power, the first bypass The unit 153 is not electrically connected to the first node N1 and the second node N2, and the second bypass unit 154 is not electrically connected to the second node N2. The electricity stored in the first power storage unit 151 and the second power storage unit 152 is provided to the power consumption module 13 rather than leaking to the first bypass unit 153 and the second bypass unit 154. Therefore, unnecessary consumption of electricity stored in the first power storage unit 151 and the second power storage unit 152 can be reduced, and power leaks from the first power storage unit 151 and the second power storage unit 152 to the ground end. Can also be reduced.

  In other words, when the external power supply 20 supplies power normally, the power consuming module 13 of the electronic device 10 operates on the electricity provided by the external power supply 20 and the external power supply 20 cannot supply power normally, or even When the external power 20 is shut off, the backup power supply module 15 supplies power to the electronic device 10 for a period of time so that the electronic device 10 can complete the necessary shut-off procedure. In the case of an event data recorder, the external power source 20 is, for example, a power source supported by a vehicle, and when the vehicle normally supplies power, the event data recorder operates by electricity provided by the vehicle, and the vehicle When the power supply is stopped, the event data recorder can execute the stop procedure by electricity provided by the backup power supply module for a period of time. In the event data recorder stop procedure, for example, video recording is continued for 3 seconds and the last recorded image file is closed and stored.

  Reference is now made to FIG. 2, which is a block diagram of an electronic device in another embodiment of the present disclosure. As shown in FIG. 2, the electronic device 30 includes a main power supply module 31, a power consumption module 33, a backup power supply module 35, and a voltage division module 37. The main power supply module 31 is electrically connected to the external power supply 40 in order to supply power to the power consumption module 33 and charge the backup power supply module 35. The backup power supply module 35 includes a first power storage unit 351, a second power storage unit 352, a first bypass unit 353, and a second bypass unit 354.

  The first bypass unit 353 includes a first bypass resistor R1 and a first bypass switch M1 connected in series. The first bypass resistor R1 and the first bypass switch M1 are electrically connected to and positioned between the first node N1 and the second node N2. The second bypass unit 354 includes a second bypass resistor R5 and a second bypass switch M2 connected in series. The second bypass resistor R5 and the second bypass switch M2 are electrically connected to the second node N2 and the reference voltage end and positioned between the two. The first bypass switch M1 and the second bypass switch M2 are selectively turned on according to whether or not the external power supply 40 supplies power normally. When the external power supply 40 supplies power normally, the first bypass switch M1 and the second bypass switch M2 are turned on, and the first bypass resistor R1 is electrically connected to the first node N1 and the second node N2. And the second bypass resistor R5 is electrically connected to the second node N2 and the reference voltage end and located between the two. When the external power supply 40 stops supplying power, the first bypass switch M1 and the second bypass switch M2 are not turned on, and the first bypass resistor R1 is connected to the first node N1 and the second node. N2 is not electrically connected to and located between the two, and the second bypass resistor R5 is not electrically connected to the second node N2 and the reference voltage end and is not located between the two.

  The first bypass switch M1 includes a first end, a second end, and a control end. The first end of the first bypass switch M1 is electrically connected to the first node N1, the second end of the first bypass switch M1 is electrically connected to the second node N2, The control end of the first bypass switch M1 is electrically connected to the voltage division node Nd of the voltage division module 37. The second bypass switch M2 includes a first end, a second end, and a control end. The first end of the second bypass switch M2 is electrically connected to the second node N2. The second end of the second bypass switch M2 is electrically connected to the reference end, and the control end of the second bypass switch M2 is electrically connected to the voltage dividing node Nd of the voltage dividing module 37. .

  The voltage dividing module 37 includes a resistor R3 and a resistor R4. One end of the resistor R3 is electrically connected to the external power supply 40, and the other end of the resistor R3 is electrically connected to the voltage dividing node Nd. One end of the resistor R4 is electrically connected to the voltage dividing node Nd, and the other end of the resistor R4 is electrically connected to the reference voltage end. The voltage division module 37 divides the electricity provided by the external power supply 40 so that the first bypass switch M1 and the second bypass switch M2 are selectively conducted in response to the voltage potential of the voltage division node Nd. Used to do.

  Actually, when the external power supply 40 supplies power normally, the voltage difference between the two ends of the first bypass resistor R1 is the voltage potential applied to the main power supply module 31 by the first power storage unit 351. The voltage difference between the two ends of the second bypass resistor R2 is related to the voltage potential applied to the second power storage unit 352 by the main power supply module 31. More specifically, the voltage potential applied to the first power storage unit 351 by the main power supply module 31 is the voltage difference between the two ends of the first bypass resistor R1 and the first bypass switch M1. It is substantially equal to the sum of the voltage differences between the first end and the second end. The voltage potential applied to the second power storage unit 352 by the main power supply module 31 is the voltage difference between the two ends of the second bypass resistor R2 and the first end of the second bypass switch M2. Substantially equal to the sum of the voltage differences between the second ends.

  In one embodiment, when the external power supply 40 supplies power normally, the first bypass switch M1 and the second bypass switch M2 are turned on, and the first bypass resistor R1 is in parallel with the first power storage unit 351. And the second bypass resistor R2 is connected to the second power storage unit 352 in parallel. The ratio between the resistors of the first bypass resistor R1 and the second bypass resistor R2 is the voltage potential applied to the first power storage unit 351 by the main power supply module 31 and the second power storage unit 352. The voltage potential applied can be designed to have the desired voltage division ratio between them. Actually, the ratio between the resistances of the first bypass resistor R1 and the second bypass resistor R2 is typically that the first power storage unit 351 has the same power storage amount as the second power storage unit 352. Is caused. In another embodiment, the ratio between the resistors of the first bypass resistor R1 and the second bypass resistor R2 is such that the first power storage unit 351 and the second power storage unit 352 are charged with the same voltage potential. Can cause However, this embodiment is not limited to these exemplary descriptions related to the ratio, and those skilled in the art can freely design it according to the requirements of the actual application.

  When the external power supply 40 stops supplying power, neither the first bypass switch M1 nor the second bypass switch M2 is conducted, and the first bypass resistor R1 is connected in parallel to the first power storage unit 351. The second bypass resistor R2 is not connected to the second power storage unit 352 in parallel. Therefore, the first power storage unit 351 and the second power storage unit 352 only supply power to the power consuming module 33, and unexpectedly via the first bypass resistor R1 and the second bypass resistor R2. Do not discharge.

  In this embodiment, the electronic device 30 further includes a first backflow prevention component DZ1, a second backflow prevention component DZ2, a third backflow prevention component DZ3, and a current limiting resistor R5. The first backflow prevention component DZ1 is electrically connected to the first node N1 and the power consumption module 33, and is positioned between the two. The second backflow prevention component DZ2 and the current limiting resistor R5 are connected in series between the first node N1 and the main power supply module 31, and the third backflow prevention component DZ3 is connected to the main power supply module 31 and the power. It is electrically connected to the consumption module 33 and positioned between them. Actually, when the first power storage unit 351 and the second power storage unit 352 are not fully charged, the first power storage unit 351 and the second power storage unit 352 are connected to the main power supply module 31 and the second power storage module 31. It is charged by electricity provided by the external power supply 40 via the backflow prevention component DZ2 and the current limiting resistor R5. On the other hand, the electricity provided by the external power supply 40 is also applied to the power consumption module 33 via the third backflow prevention component DZ3. When the first power storage unit 351 and the second power storage unit 352 are fully charged, the equivalent resistor on the path extending from the main power supply module 31 to the power consumption module 33 via the first node N1 is Is longer due to the presence of the first backflow prevention component DZ1 located between the node N1 and the power consumption module 33. Therefore, the output voltage of the main power supply module 31 changes between the first power storage unit 351 and the second power storage unit 352 for a while, whereby the first power storage unit 351 and the second power storage unit 352 Life span can be more optimized. Actually, the first backflow prevention component DZ1 and the second backflow prevention component DZ2 are sub-circuits, each having a plurality of electronic components, but this embodiment is not limited thereto.

  In one embodiment, the power consumption module 33 includes a processing unit 331. The processing unit 331 is, for example, a central processing unit (CPU), a microprocessor or other suitable element of the electronic device 30. The processing unit 331 is electrically connected to the first node N1 for receiving a signal on the first node N1, such as the voltage VN1. When the electronic device receives electricity provided by the external power supply 40, the processing unit 331 determines the change curves of the first power storage unit 351 and the second power storage unit 352 according to the voltage VN1 on the first node N1, In addition, the amount of electricity of the first power storage unit 351 and the second power storage unit 352 is determined according to the change curve.

  Specifically, regardless of the individual viewpoint or the overall viewpoint, the first power storage unit 351 and the second power storage unit 352 have their own time constants that affect their change time and change speed. . The correlation between the time and the output voltage or change current of the first power storage unit 351 and the correlation between the time and the output voltage or change current of the second power storage unit 352 are respectively expressed by the change curve described above. Configure. In other words, the time constant of the first power storage unit 351 and the second power storage unit 352 can determine the level of deterioration of the first power storage unit 351 and the level of deterioration of the second power storage unit 352. As described above, in order to estimate the equivalent capacitance of the first power storage unit 351 and the second power storage unit 352, it can be estimated according to the variation in the change curve. In one embodiment, when the processing unit 331 determines that the amount of electricity in the first power storage unit 351 and the second power storage unit 352 is lower than a preset threshold, the processing unit 331 A warning signal is generated to notify the user that it is time to replace the related components of the unit 351 and the second power storage unit 352.

  In one embodiment, if the external power supply 40 is unable to properly supply power or is blacked out, such as the electronic device 30 must perform a shutdown procedure, the power consumption module 33 may The electricity provided by the backup power supply module 35 is used to perform the necessary shutdown procedure. When the processing unit 331 determines that the amount of electricity in the first power storage unit 351 and the second power storage unit 352 is lower than a preset threshold, the warning signal generated by the processing unit 331 is due to a stop procedure. It is used to inform the power consumption module 33 to change the stop procedure, such as shortening the extension time.

  In the event data recorder, the vehicle stops supplying power to the event data recorder when the amount of electricity in the first power storage unit 351 and the second power storage unit 352 is not lower than a preset threshold value. The event data recorder can then continue video recording for 3 seconds and store the last recorded image file by electricity provided by the backup power supply module 35. When the amount of electricity in the first power storage unit 351 and the second power storage unit 352 is lower than a preset threshold, the event data recorder can shorten the time to continue video recording, or the last recorded image file You can cancel the continuation of the video recording to directly close and remember.

  On the other hand, the processing unit 331 determines change curves of the first power storage unit 351 and the second power storage unit 352 in accordance with the voltage VN1 of the first node N1. Further, when the electronic device 30 having the first power storage unit 351 and the second power storage unit 352 is shipped from the factory, the power storage capacity of the first power storage unit 351 and the power storage capacity of the second power storage unit 352 are simply set. Detecting during the start and stop of the electronic device 30 so as to guarantee the storage capability of the first storage unit 351 and the storage capability of the second storage unit 352 and also to guarantee the product quality of the electronic device 30 Can be done.

  For convenience of description, a typical example of the foregoing embodiment is directly based on a structure including a first power storage unit, a second power storage unit, a first bypass unit, and a second bypass unit, In practice, the person skilled in the art can omit the second power storage unit and the second bypass unit from the above structure, or can arrange many power storage units and bypass units in the structure according to the above description, The present disclosure is not limited thereto.

  To more clearly describe a method for charging and discharging a backup power source, and referring to FIGS. 1 and 3 together, FIG. 3 is a flowchart of a method for charging and discharging a backup power source in an embodiment of the present disclosure. It is. As shown in these drawings, in step S501, the electronic device 10 provides the electricity provided by the external power source 20 to the power consumption module 13 and the backup power supply module 15. In step S502, when the backup power supply module 15 is charged by electricity provided by the external power supply 20, the bypass path of the backup power supply module 15 is turned on to limit the voltage potential applied to the backup power supply module 15. Is done. In step S503, it is determined whether or not the external power supply 20 supplies power normally. When the external power supply 20 supplies power normally, the process proceeds to step S501. When the external power supply 20 stops supplying power, in step S504, the bypass path is not conducted, and the backup power supply module 15 provides the stored electricity to the power consumption module 13.

  In another embodiment, referring to FIGS. 1 and 4, FIG. 4 is a flowchart of a method for charging and discharging a backup power source in another embodiment of the present disclosure. As shown in these figures, in step S601, the electronic device 10 provides electricity provided by the external power source 20 to the power consumption module 13 and the backup power supply module 15. In step S <b> 602, the electronic device 10 determines the amount of electricity of at least one of the first power storage unit 151 and the second power storage unit 152 according to the change curve of at least one of the first power storage unit 151 and the second power storage unit 152. To decide. In step S604, it is determined whether or not the amount of electricity of at least one of the first power storage unit 151 and the second power storage unit 152 is lower than a threshold value, and the first power storage unit 151 and the second power storage unit 152 are determined. In step S606, the electronic device 10 generates a warning signal or shortens the extension time when the amount of electricity of at least one of the two is lower than the threshold value.

  In step S <b> 603, when the backup power supply module 15 is charged by electricity provided by the external power supply 20, the bypass path of the backup power supply module 15 is turned on, that is, the first power supply module 15 provided by the first bypass unit 153. One bypass path and the second bypass path provided by the second bypass unit 154 are conducted to limit the voltage potential applied to the backup power supply module 15. In step S605, it is determined whether or not the external power supply 20 supplies power normally. When the external power supply 20 supplies power normally, the process proceeds to step S601. When the external power supply 20 stops supplying power, the bypass path is not conducted and the backup power supply module 15 provides the stored electricity to the power consuming module 13 in step S607. In fact, the method of charging and discharging the backup power source in the present disclosure has been described in the above-described embodiment, and therefore the related description is omitted in this embodiment.

  In summary, the present disclosure provides an electronic device having a backup power source and a method for charging and discharging the backup power source, and the first bypass unit and the second bypass unit are respectively connected to the first power storage unit and the second power storage unit. Connected in parallel to the power storage unit. When the external power supply supplies power normally, the first bypass unit and the second bypass unit are configured so that the amount of electricity stored in the first storage unit and the amount of electricity stored in the second storage unit are The first power storage unit and the second power storage unit are controlled by the main power supply module so that they can be controlled and are not influenced by the equivalent resistor of the first power storage unit and the equivalent resistor of the second power storage unit. The voltage potential applied to can be limited. The first bypass unit and the second bypass when the external power source stops supplying power so that the first power storage unit and the second power storage unit are used to supply power to the power consuming module. The units are not electrically connected to the first power storage unit and the second power storage unit, respectively. Therefore, the electricity stored in the first power storage unit and the electricity stored in the second power storage unit require the electricity stored in the first power storage unit and the electricity stored in the second power storage unit to be stopped. There is no leakage through the first bypass unit and the second bypass unit, respectively, so that it can be provided to the electronic device for the procedure. Further, in one embodiment, the amount of electricity of the first power storage unit and the second power storage unit is determined by detecting change curves of the first power storage unit and the second power storage unit, and is optional. When the amount of electricity of the first power storage unit and the second power storage unit is insufficient for the electronic device to be able to complete the necessary stopping procedure, the electronic device abnormally stops the electronic device In order to avoid the loss caused by that, it is notified to change the stop procedure.

Claims (16)

An electronic device having a backup power source electrically connected to an external power source,
A power consumption module;
A main power supply module electrically connected to the external power source and configured to provide power to the power consuming module;
A backup power supply module;
With
The backup power supply module is
When electrically connected to the main power supply module and the external power supply supplies power normally, it receives electricity provided by the external power supply through the main power supply module, and the external power supply is power A first power storage unit configured to provide power stored in the power consumption module when connected to the first power storage unit, and connected by the main power supply module A first bypass unit configured to provide a first bypass path so as to limit a voltage potential provided to the first power storage unit;
The first bypass unit is electrically connected to the external power source and configured to selectively enable the first bypass path according to whether or not the external power source supplies power normally. An electronic device comprising a first control end. Receiving the electricity provided by the external power supply via the main power supply module when the external power supply is normally connected to the first power storage unit and the external power supply supplies power normally, and the external power supply A second power storage unit configured to provide power stored in the power consumption module when power supply is stopped;
A second connected to the second power storage unit in parallel and configured to provide a second bypass path to limit a voltage potential provided to the second power storage unit by the main power supply module; Two bypass units;
Further comprising
The second bypass unit is electrically connected to the external power source and configured to selectively enable the second bypass path according to whether the external power source normally supplies power. The electronic device of claim 1, further comprising a second control end.   The first bypass unit and the second bypass unit are configured to uniformly distribute electricity provided by the external power source to the first power storage unit and the second power storage unit when the external power source supplies power normally. The electronic device according to claim 2, which is assigned to the electronic device.   The first bypass unit includes a first bypass resistor and a first bypass switch, the second bypass unit includes a second bypass resistor and a second bypass switch, and the first bypass The switch and the second bypass switch are selectively turned on according to whether the external power supply supplies power normally, and when the external power supply supplies power normally, the first bypass switch and the second bypass switch The second bypass switch is turned on, the voltage difference between the two ends of the first bypass resistor is related to the voltage potential provided to the first storage unit by the main power supply module; and The voltage difference between the two ends of the second bypass resistor is related to the voltage potential provided to the second power storage unit by the main power supply module. The electronic device according to Motomeko 2. The first bypass switch includes a first end, a second end, and a first control end,
The first end of the first bypass switch is electrically connected to one end of the first power storage unit;
The second end of the first bypass switch is electrically connected to the first power storage unit and the second power storage unit, and the first power storage unit and the second power storage unit And the first control end of the first bypass switch is electrically connected to the main power supply module to receive electricity provided by the external power source;
The second bypass switch includes a first end, a second end, and the second control end,
The first end of the second bypass switch is electrically connected to the first power storage unit and the second power storage unit, and between the first power storage unit and the second power storage unit. Located between and
The second end of the second bypass switch is electrically connected to a reference end, and the second control end of the second bypass switch receives electricity provided by the external power source. 5. The electronic device of claim 4, wherein the electronic device is electrically connected to the main power supply module for the purpose.   So as to be electrically connected to the first control end of the first bypass switch and the second control end of the second bypass switch and to receive electricity provided by the external power source. 6. The electronic device of claim 5, further comprising a voltage division module comprising a configured voltage division node.   The apparatus of claim 1, further comprising a first backflow prevention component that is electrically connected to the first power storage unit and the power consumption module and is positioned between the first power storage unit and the power consumption module. The electronic device described. A second backflow prevention component electrically connected to the first power storage unit and the main power supply module and positioned between the first power storage unit and the main power supply module;
A current limiting resistor electrically connected to the first power storage unit and the main power supply module and positioned between the first power storage unit and the main power supply module;
The electronic device according to claim 1, further comprising:   The power consumption module is configured to determine the amount of electricity of the first power storage unit according to a change curve of the first power storage unit when the electronic device receives electricity provided by the external power source. The electronic device according to claim 1, further comprising a processed unit.   The electronic device according to claim 9, wherein the processing unit generates a warning signal when the processing unit determines that the amount of electricity of the first power storage unit is lower than a threshold value.   When the electronic device performs a shutdown procedure, the power consumption module is turned off after an extended time, and the processing unit determines that the amount of electricity in the first power storage unit is lower than a threshold, The electronic device according to claim 9, wherein a processing unit reduces the extension time. A method of charging and discharging a backup power source applied to an electronic device having a backup power source, comprising:
The electronic device is electrically connected to an external power source and includes a power consumption module and a backup power supply module.
The method
When the external power supply supplies power normally, the electricity provided by the external power supply is provided to the power consumption module and the backup power supply module,
When the backup power supply module is charged by electricity provided by the external power source, conducting a bypass path of the backup power supply module to limit the voltage potential applied to the backup power supply module;
When the external power supply stops supplying power, the bypass path does not conduct, and the backup power supply module provides stored electricity to the power consumption module;
A method comprising: The backup power supply module includes a first power storage unit and a second power storage unit;
The bypass path includes a first bypass path corresponding to the first power storage unit and a second bypass path corresponding to the second power storage unit;
In the method, when the first power storage unit and the second power storage unit are charged by electricity provided by the outside, the external power source causes the first power storage unit and the second power storage unit to be charged. The method of claim 12, comprising conducting the first bypass path and the second bypass path to evenly distribute provided electricity.   When the electronic device receives electricity provided by the external power source, the first power storage unit and the second power storage according to a change curve of at least one of the first power storage unit and the second power storage unit. The method of claim 13, further comprising determining an amount of electricity of at least one of the units.   The method according to claim 14, further comprising generating a warning signal when an amount of electricity of at least one of the first power storage unit and the second power storage unit is lower than a threshold value. When the electronic device performs a shutdown procedure, after an extended time, turn off the power consumption module;
Reducing the extension time when the amount of electricity of the first power storage unit is lower than a threshold;
15. The method of claim 14, further comprising:

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