CN211606167U - Charging and discharging management device of mobile power supply - Google Patents
Charging and discharging management device of mobile power supply Download PDFInfo
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- CN211606167U CN211606167U CN202020692250.7U CN202020692250U CN211606167U CN 211606167 U CN211606167 U CN 211606167U CN 202020692250 U CN202020692250 U CN 202020692250U CN 211606167 U CN211606167 U CN 211606167U
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Abstract
The utility model discloses a charging and discharging management device of a mobile power supply, which relates to power supply management and comprises a plurality of charging systems connected in parallel, a discharging system connected in series with the charging systems and an external management system connected with each charging system; the charging system supplements electric energy through an external charging device; the charging system comprises a first charging system, a second charging system and an emergency charging system; the discharging system comprises a control switch, a direct current voltage stabilization output device and a battery voltage output device; and the external management system is used for managing the charging system and the discharging system. The utility model uses a plurality of groups of batteries to be combined flexibly, thereby enhancing the endurance capacity of large-scale movable equipment; the charging and discharging selection of a plurality of groups of battery packs is controlled through the electronic switch tube, the charging and discharging management of the lithium battery is realized, the intelligent maintenance of the lithium battery pack is realized by combining the detailed operation of charging and discharging, the purpose of prolonging the service life of the lithium battery is achieved, and the cruising ability of the mobile equipment is improved; the mobile device may be recharged automatically.
Description
Technical Field
The utility model relates to a power management especially relates to a portable power source's charge-discharge management device.
Background
With the development of science and technology, more and more large-scale movable electronic equipment gradually enters the market, but the large-scale movable electronic equipment is movable equipment due to large volume, most of the large-scale movable electronic equipment in the market adopts single batteries to supply power to a system at present, the limitation of battery capacity causes the endurance of most large-scale movable electronic equipment to be unsatisfactory, the lithium battery needs to be charged repeatedly, the service life of the lithium battery is reduced, the lithium battery is damaged, and the like; some charging equipment can automatically utilize a recharging device to realize charging when the power consumption reaches a critical value, but when the charger is automatically removed after charging is completed and the charging equipment charges the device, the switching of a power supply circuit has a certain time, so that the mobile electronic equipment cannot be used for a short time.
In order to solve these problems, a power supply charge and discharge management device is needed, the service life of the lithium battery is prolonged through intelligent charge and discharge control, and the problems of large volume and charging time switching are solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable power source's charge-discharge management device.
In order to achieve the above object, the utility model provides a following technical scheme:
a charging and discharging management device of a mobile power supply comprises a plurality of charging systems connected in parallel, a discharging system connected in series with the charging systems, and an external management system connected with each charging system; the charging system supplements electric energy through an external charging device;
the charging system comprises a first charging system, a second charging system and an emergency charging system;
the discharging system comprises a control switch, a direct current voltage stabilization output device and a battery voltage output device;
and the external management system is used for managing the charging system and the discharging system.
The mobile equipment is powered by adopting a plurality of charging systems, the discharging systems correspond to the charging systems, the charging systems are managed by an external management system, and finally, a battery pack of one charging system is selected to supply power to the mobile equipment; and meanwhile, only one charging mode in the external charging devices is adopted to charge one charging system, and when the battery pack voltage of all the charging systems is not enough to provide energy to the outside, the external charging devices are accessed to directly provide energy for the mobile equipment through the emergency charging system.
Further, the external charging device comprises a charging pile and an adaptive charger. The external charging device comprises but is not limited to a charging pile and an adaptive charger, both the charging pile and the adaptive charger can be used as energy sources of the battery pack of the charging system, but can not be accessed simultaneously, and only one charging mode can be selected.
Further, the control switch of the discharging system comprises an electronic switch M3 which is normally closed and an electronic switch M4 which is normally closed, wherein the electronic switch M3 is connected with the charging system.
The electronic switch M3 is controlled by a first logic circuit, that is, the control signal MC2 and the first low voltage detection signal are controlled by a first and gate logic circuit, when the battery voltage of the first battery pack is lower than the battery protection limit voltage, the first low voltage detection signal outputs logic 0, the output of the first and gate logic is made to be logic 0, so as to shield the control signal MC2 input from the outside, and the electronic switch M3 is turned off, thereby realizing the protection of the first battery pack; when the voltage of the first battery pack is higher than the battery protection limit voltage, the first low voltage detection signal outputs logic 1, the output of the first and gate logic is made to be logic 1, and therefore the control signal MC2 is received, and effective control of the electronic switch M3 by an external control signal is achieved.
The electronic switch M4 is a normally open switch and is controlled by a second logic circuit, that is, the control signal MC3 and a second low voltage detection signal are controlled by a second and gate logic circuit, when the battery voltage of the second battery pack is lower than the battery protection limit voltage, the second low voltage detection signal outputs logic 0, so that the output of the second and gate logic is logic 0, thereby shielding the control signal MC3 input from the outside, and disconnecting the electronic switch M4 to protect the second battery pack; when the voltage of the second battery pack is higher than the battery protection limit voltage, the second low voltage detection signal outputs logic 1, the output of the second and gate logic is made to be logic 1, and therefore the control signal MC3 is received, and effective control of the electronic switch M4 by an external control signal is achieved.
When the mobile device is discharged, the DC/DC converter can convert the voltage of the battery into a stable direct current power supply to supply power to an external system, and when any one of the electronic switch M3 and the electronic switch M4 is closed or a charging device is inserted, the stable direct current power supply can be output to supply power to the mobile device. When the electronic switch M3 is closed and the electronic switch M4 is opened, the first battery pack is selected as a power supply to supply power to the mobile device, and when the electronic switch M3 is opened and the electronic switch M4 is closed, the second battery pack is selected as a power supply to supply power to the mobile device; when the electronic switch M3 and the electronic switch M4 are both off and an external charging device is connected, the emergency charging system is selected to supply power to the mobile device.
Further, the first charging system comprises an electronic switch M1 and a first battery pack which are connected in series, the second charging system comprises an electronic switch M2 and a second battery pack which are connected in series, and the emergency charging system comprises a DC/DC converter and a backflow prevention circuit, wherein the DC/DC converter is used for converting the power supply voltage of an external charging device into a stable direct current power supply, and the backflow prevention circuit is connected with the DC/DC converter in series.
When the external electric detection device detects that the external charging device is connected, the external electric detection device transmits an external electric detection signal to the external management system. The electronic switch M1 is a normally closed switch, and when no external system control signal is accessed, the first battery pack is charged by default; the state of the electronic switch M2 and the state of the electronic switch M1 are mutually exclusive, that is, only one of the electronic switch M1 and the electronic switch M2 is closed, and only one of the first battery pack and the second battery pack can be charged at the same time. The voltage output of the first battery pack and the voltage output of the second battery pack are monitored by the first voltage output device and the second voltage output device, and a real-time monitoring result is provided for an external management system for reference.
The DC/DC converter part adopts an external charging device as a power supply source, when the battery pack voltage of each charging system is insufficient to supply energy to the mobile equipment, the emergency charging system can supply energy to the mobile equipment, and the backflow prevention circuit adopts a diode circuit to prevent the battery pack current of the charging system from flowing backwards to the output end of the DC/DC converter, and the output voltage of the DC/DC converter is lower than the battery protection limit voltage of the battery pack. When the voltage of the battery pack is charged to be higher than the battery protection limit voltage, the external management system can autonomously select the power supply so as to realize intelligent selection of the power supply.
Further, the external management system comprises charge management and discharge management, wherein the charge management comprises a voltage comparator, an external electric detection device for detecting whether an external charging device is connected or not, a first voltage output device for displaying the voltage of the first battery pack, a second voltage output device for displaying the voltage of the second battery pack, and a control signal MC1 for controlling the electronic switch M1 and the electronic switch M2; the discharge management comprises a first logic circuit controlling the electronic switch M3, a second logic circuit controlling the electronic switch M4.
The electronic switch M1 and the electronic switch M3 are in a default on state, that is, the charging circuit defaults to charge the first battery pack, and the discharging circuit defaults to select the first battery pack to discharge, so as to ensure that the device can supply power to the external circuit when the external control system fails or is not accessed.
Further, the first logic circuit includes a first low voltage detection signal obtained by comparing the output voltage of the first voltage output device with a set reference voltage, and a first and logic control signal MC2, and the first low voltage detection signal becomes an enable signal of the control signal MC2 through the first and logic.
Further, the second logic circuit includes a second low voltage detection signal obtained by comparing the output voltage of the second voltage device with a set reference voltage, and a second and logic control signal MC3, and the second low voltage detection signal becomes an enable signal of the control signal MC3 through the second and logic.
Furthermore, the external charging device and the plurality of charging systems are connected with the voltage comparator, a power supply with the highest voltage is selected as an onboard control logic power supply, and the onboard control logic power supply provides electric energy for the first logic circuit and the second logic circuit.
Further, the switch state of the electronic switch M1 is opposite to the switch state of the electronic switch M2.
Compared with the prior art, the utility model can be flexibly combined by using a plurality of groups of batteries, thereby enhancing the endurance of large-scale movable equipment; the charging and discharging selection of a plurality of groups of battery packs is controlled through the electronic switch tube, the charging and discharging management of the lithium battery is realized, the intelligent maintenance of the lithium battery pack is realized by combining the detailed operation of charging and discharging, the purpose of prolonging the service life of the lithium battery is achieved, and the cruising ability of the mobile equipment is improved; can return automatically and fill portable equipment, when the completion of charging left the electric pile of filling, the seamless switching of power supply realization.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
The utility model provides a charging and discharging management device of a mobile power supply, referring to fig. 1, a plurality of charging systems are adopted to supply power to mobile equipment, the discharging systems correspond to the charging systems, the charging systems are managed through an external management system, and finally, a battery pack of one of the charging systems is selected to supply power to the mobile equipment; and meanwhile, only one charging mode in the external charging devices is adopted to charge one charging system, and when the battery pack voltage of all the charging systems is not enough to provide energy to the outside, the external charging devices are accessed to directly provide energy for the mobile equipment through the emergency charging system.
The emergency charging system comprises a plurality of charging systems connected in parallel, wherein each charging system comprises a first charging system, a second charging system and an emergency charging system. The first charging system comprises an electronic switch M1 and a first battery pack which are connected in series, the second charging system comprises an electronic switch M2 and a second battery pack which are connected in series, the switching state of the electronic switch M1 is opposite to that of the electronic switch M2, and the emergency charging system comprises a DC/DC converter and a backflow preventing circuit, wherein the DC/DC converter is used for converting the power supply voltage of an external charging device into a stable direct current power supply, and the backflow preventing circuit is connected with the DC/DC converter in series.
The charging system supplements electric energy through an external charging device, and the external charging device comprises a charging pile and an adaptive charger. The external charging device comprises but is not limited to a charging pile and an adaptive charger, both the charging pile and the adaptive charger can be used as energy sources of the battery pack of the charging system, but can not be accessed simultaneously, and only one charging mode can be selected.
The discharging system connected in series with the charging system comprises a control switch, a direct current voltage-stabilizing output device and a battery voltage output device, wherein the control switch of the discharging system comprises an electronic switch M3 which is normally closed and an electronic switch M4 which is normally closed, and the electronic switch M3 and the electronic switch M4 are connected with the charging system in a normally closed mode.
And the external management system is connected with each charging system and is used for managing the charging system and the discharging system. The external management system comprises charge management and discharge management, wherein the charge management comprises a voltage comparator, an external electric detection device for detecting whether an external charging device is connected or not, a first voltage output device for displaying the voltage of the first battery pack, a second voltage output device for displaying the voltage of the second battery pack, and a control signal MC1 for controlling the electronic switch M1 and the electronic switch M2; the discharge management comprises a first logic circuit controlling the electronic switch M3, a second logic circuit controlling the electronic switch M4. The first logic circuit includes a first low voltage detection signal obtained by comparing the output voltage of the first voltage output device with a set reference voltage, and a first and logic and control signal MC2, and the first low voltage detection signal becomes an enable signal of the control signal MC2 through the first and logic. The second logic circuit includes a second low voltage detection signal obtained by comparing the output voltage of the second voltage device with a set reference voltage, and a second and logic control signal MC3, which becomes an enable signal of the control signal MC3 through the second and logic. The external charging device and the plurality of charging systems are connected with the voltage comparator, a power supply with the highest voltage is selected as an onboard control logic power supply, and the onboard control logic power supply provides electric energy for the first logic circuit and the second logic circuit.
When the external electric detection device detects that the external charging device is connected, the external electric detection device transmits an external electric detection signal to the external management system. The electronic switch M1 is a normally closed switch, and when no external system control signal is accessed, the first battery pack is charged by default; the state of the electronic switch M2 and the state of the electronic switch M1 are mutually exclusive, that is, only one of the electronic switch M1 and the electronic switch M2 is closed, and only one of the first battery pack and the second battery pack can be charged at the same time. The voltage output of the first battery pack and the voltage output of the second battery pack are monitored by the first voltage output device and the second voltage output device, and a real-time monitoring result is provided for an external management system for reference.
When the mobile equipment is discharged, namely the charging system is managed by the external management system to be matched with the discharging system for discharging, the mobile equipment is charged, when the mobile equipment is discharged, the DC/DC converter can convert the voltage of the battery into a stable direct current power supply to supply power to the mobile equipment, and when any one of the electronic switch M3 and the electronic switch M4 is closed or the charging equipment is inserted, the stable direct current can be output to supply power to the mobile equipment. The battery voltage output device directly outputs the battery voltage to supply power for the mobile equipment. When any one of the electronic switch M3 and the electronic switch M4 is closed or an external charging device is inserted, power can be supplied to the mobile equipment. When the electronic switch M3 is closed and the electronic switch M4 is opened, the first battery pack is selected as a power supply to supply power to the mobile device, and when the electronic switch M3 is opened and the electronic switch M4 is closed, the second battery pack is selected as a power supply to supply power to the mobile device; when the electronic switch M3 and the electronic switch M4 are both off and an external charging device is connected, the emergency charging system is selected to supply power to the mobile device. The DC/DC converter part adopts an external charging device as a power supply source, when the battery pack voltage of each charging system is insufficient to supply energy to the mobile equipment, the emergency charging system can supply energy to the mobile equipment, and the backflow prevention circuit adopts a diode circuit to prevent the battery pack current of the charging system from flowing backwards to the output end of the DC/DC converter, and the output voltage of the DC/DC converter is lower than the battery protection limit voltage of the battery pack. When the voltage of the battery pack is charged to be higher than the battery protection limit voltage, the external management system can autonomously select the power supply so as to realize intelligent selection of the power supply.
The electronic switch M3 is controlled by a first logic circuit, that is, the control signal MC2 and the first low voltage detection signal are controlled by a first and gate logic circuit, when the battery voltage of the first battery pack is lower than the battery protection limit voltage, the first low voltage detection signal outputs logic 0, the output of the first and gate logic is made to be logic 0, so as to shield the control signal MC2 input from the outside, and the electronic switch M3 is turned off, thereby realizing the protection of the first battery pack; when the voltage of the first battery pack is higher than the battery protection limit voltage, the first low voltage detection signal outputs logic 1, the output of the first and gate logic is made to be logic 1, and therefore the control signal MC2 is received, and effective control of the electronic switch M3 by an external control signal is achieved.
The electronic switch M4 is a normally open switch and is controlled by a second logic circuit, that is, the control signal MC3 and a second low voltage detection signal are controlled by a second and gate logic circuit, when the battery voltage of the second battery pack is lower than the battery protection limit voltage, the second low voltage detection signal outputs logic 0, so that the output of the second and gate logic is logic 0, thereby shielding the control signal MC3 input from the outside, and disconnecting the electronic switch M4 to protect the second battery pack; when the voltage of the second battery pack is higher than the battery protection limit voltage, the second low voltage detection signal outputs logic 1, the output of the second and gate logic is made to be logic 1, and therefore the control signal MC3 is received, and effective control of the electronic switch M4 by an external control signal is achieved.
It should be noted that the electronic switches M1 and M3 are in the default conducting state, that is, the charging circuit defaults to charging the first battery pack, and the discharging circuit defaults to selecting discharging the first battery pack, so as to ensure that the device can supply power to the external circuit when the external control system fails or is not accessed.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A charging and discharging management device of a mobile power supply is characterized by comprising a plurality of charging systems connected in parallel, discharging systems connected in series with the charging systems, and external management systems connected with the charging systems;
the charging system supplements electric energy through an external charging device;
the charging system comprises a first charging system, a second charging system and an emergency charging system;
the discharging system comprises a control switch, a direct current voltage stabilization output device and a battery voltage output device;
and the external management system is used for managing the charging system and the discharging system.
2. The charging and discharging management device for the mobile power supply according to claim 1, wherein the external charging device comprises a charging pile and an adaptive charger.
3. The charging and discharging management device of claim 1, wherein the control switch of the discharging system comprises an electronic switch M3 which is normally closed and an electronic switch M4 which is normally closed, and is connected with the charging system.
4. The charging and discharging management device of claim 1, wherein the first charging system comprises an electronic switch M1 and a first battery pack connected in series, the second charging system comprises an electronic switch M2 and a second battery pack connected in series, and the emergency charging system comprises a DC/DC converter for converting the supply voltage of the external charging device into a stable DC power supply and a backflow prevention circuit connected in series with the DC/DC converter.
5. The charging and discharging management device of claim 1, wherein the external management system comprises a charging management and a discharging management, the charging management comprises a voltage comparator, an external electricity detection device for detecting whether an external charging device is connected, a first voltage output device for displaying a first battery pack voltage, a second voltage output device for displaying a second battery pack voltage, a control signal MC1 for controlling the electronic switch M1 and the electronic switch M2; the discharge management comprises a first logic circuit controlling the electronic switch M3, a second logic circuit controlling the electronic switch M4.
6. The device as claimed in claim 5, wherein the first logic circuit comprises a first low voltage detection signal, which is obtained by comparing the output voltage of the first voltage output device with a set reference voltage, and a first AND control signal MC2, and the first low voltage detection signal becomes an enable signal of the control signal MC2 through the first AND logic.
7. The device as claimed in claim 5, wherein the second logic circuit comprises a second low voltage detection signal, which is obtained by comparing the output voltage of the second voltage device with a set reference voltage, and a second AND control signal MC3, and the second low voltage detection signal becomes an enable signal of the control signal MC3 through the second AND logic.
8. The charging and discharging management device of the mobile power supply according to claim 1, wherein the external charging device and the plurality of charging systems are connected with a voltage comparator, and a power supply with the highest voltage is selected as an on-board control logic power supply which supplies power to the first logic circuit and the second logic circuit.
9. The charging and discharging management device of claim 4, wherein the switch state of the electronic switch M1 is opposite to the switch state of the electronic switch M2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020692250.7U CN211606167U (en) | 2020-04-29 | 2020-04-29 | Charging and discharging management device of mobile power supply |
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| CN202020692250.7U CN211606167U (en) | 2020-04-29 | 2020-04-29 | Charging and discharging management device of mobile power supply |
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| CN211606167U true CN211606167U (en) | 2020-09-29 |
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