CN219370311U

CN219370311U - Power management system for reinforcing notebook computer

Info

Publication number: CN219370311U
Application number: CN202320026384.9U
Authority: CN
Inventors: 陈波
Original assignee: Hefei Zhuoyi Hengtong Information Security Co Ltd
Current assignee: Hefei Zhuoyi Hengtong Information Security Co Ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-07-18
Anticipated expiration: 2033-01-05

Abstract

The utility model provides a power management system for a reinforced notebook computer, which comprises a power adapter, a converter, a charging module, a first switching module, a first battery, a second switching module, a second battery and a control module. The output end of the power adapter is connected to the first input end of the converter, and the detection end of the power adapter is connected to the control module. The first battery is connected to the second input end of the converter through the first switching module and the second battery is connected to the second input end of the converter through the second switching module. The first output end of the converter supplies power to the computer, and the second output end of the converter is connected to the input end of the charging module. The output end of the charging module is connected to the first battery through the first switching module and connected to the second battery through the second switching module. The control module is also connected to the first switching module, the second switching module, the first battery and the second battery. The two batteries of the utility model can be replaced without separating the main battery from the auxiliary battery, and can be conveniently switched between charging and discharging.

Description

Power management system for reinforcing notebook computer

Technical Field

The utility model relates to the technical field of computer power supply, in particular to a power management system for reinforcing a notebook computer.

Background

The reinforced notebook computer is a notebook computer which realizes three-protection reinforcing performances such as water resistance, dust resistance, falling resistance and the like through special process design. A typical consolidation process may include: special structural design, special shell material, reinforcement measures of a display screen, storage and memory reinforcement measures, special reinforcement treatment of battery power supply and the like.

Because the reinforced notebook computer is mainly used outdoors, i.e. in an environment without commercial power, and is often required to perform detection and recording without power-off and power-on operation for a long time, the reinforced notebook computer has special requirements for a power management system, such as a main battery and a secondary battery, and can be replaced by the main battery and the secondary battery to supply power under the condition of not receiving the commercial power so as to keep the computer system to continuously work.

However, although the existing power management system for reinforcing the notebook computer can prolong the power supply time under the condition of no mains supply through the main battery and the auxiliary battery, the existing power management system still has some defects in the use process, for example, the battery of the power management system for reinforcing the notebook computer has main and auxiliary components, when the battery is replaced, only the auxiliary battery can be replaced, and the main battery cannot be replaced, so that the performance and the service life of the reinforcing notebook computer are affected; in addition, when the secondary battery is replaced, the replacement operation can be performed only after the system is powered off, so that the continuity of system operation of the reinforced notebook computer is affected.

It can be seen that there is still a need for further improvements in the current power management systems for notebook computers.

Disclosure of Invention

The utility model aims to provide a power management system of a reinforced notebook computer, wherein batteries are not separated into a main battery and a secondary battery and can be replaced.

In order to achieve the above-mentioned objective, the present utility model provides a power management system for a reinforced notebook computer, comprising a power adapter, a converter, a charging module, a first switching module, a first battery, a second switching module, a second battery and a control module, wherein an output end of the power adapter is connected to a first input end of the converter, and a detection end of the power adapter is connected to the control module; the first battery is connected to the second input end of the converter through the first switching module, and the second battery is connected to the second input end of the converter through the second switching module; the converter supplies power to the computer through a first output end of the converter, a second output end of the converter is connected to an input end of the charging module, and an output end of the charging module is connected to the first battery through the first switching module and connected to the second battery through the second switching module; the control module is also connected to the first switching module, the second switching module, the first battery and the second battery;

When the control module receives a connection signal from the detection end of the power adapter, the first battery and the second battery are charged and switched through the first switching module and the second switching module, so that an external power supply charges the first battery through the power adapter, the converter, the charging module and the first switching module, or charges the second battery through the power adapter, the converter, the charging module and the second switching module;

when the control module receives a disconnection signal from the detection end of the power adapter, the first battery and the second battery are discharged and switched through the first switching module and the second switching module, so that the first battery supplies power to the computer through the first switching module and the converter, or the second battery supplies power to the computer through the second switching module and the converter.

When the control module performs charging switching of the first battery or the second battery through the first switching module and the second switching module, a charging switching signal is sent to the first switching module and the second switching module, the first switching module disconnects connection of the charging module and the first battery and the converter and the first battery, the second switching module disconnects connection of the charging module and the second battery and the converter and the second battery, the charging switching safety mode is entered, and after entering the charging switching safety mode for a first preset time, the control module sends a charging signal to the first switching module, the first switching module communicates the first battery with the charging module, an external power supply charges the first battery through the power adapter, the converter, the charging module and the first switching module, or sends a charging signal to the second switching module, and the second switching module communicates the second battery with the charging module through the power adapter and the second switching module.

When the control module performs discharging switching on the first battery and the second battery through the first switching module and the second switching module, a discharging switching signal is sent to the first switching module and the second switching module, the first switching module and the second switching module communicate the voltage of the first battery and the second battery with the converter to supply power to the computer, so that the control module enters a discharging switching safety mode, after entering the discharging switching safety mode for a second preset time, the control module sends a discharging signal to the first switching module and the second switching module, the first battery is communicated with the converter through the first switching module and the converter to supply power to the computer, or the second battery is communicated with the converter through the second switching module and the converter to supply power to the computer.

The control module is connected to the connector end of the first battery and the connector end of the second battery, the connector end of the first battery is also connected to the second switching module, and the connector end of the second battery is also connected to the first switching module;

In the charging process of the first battery, when the control module and the second switching module receive a disconnection signal from a connector end of the first battery, the control module sends a charging signal to the second switching module, the second switching module communicates the second battery with the charging module, and an external power supply charges the second battery through the power adapter, the converter, the charging module and the second switching module;

in the charging process of the second battery, when the control module and the first switching module receive a disconnection signal from a connector end of the second battery, the control module sends a charging signal to the first switching module, the first switching module communicates the first battery with the charging module, and an external power supply charges the first battery through the power adapter, the converter, the charging module and the first switching module;

in the discharging process of the first battery, when the control module and the second switching module receive a disconnection signal from the connector end of the first battery, the control module sends a discharging signal to the second switching module, the second switching module communicates the second battery with the converter, and the second battery supplies power to the computer through the second switching module and the converter;

In the discharging process of the second battery, when the control module and the first switching module receive a disconnection signal from the connector end of the second battery, the control module sends a discharging signal to the first switching module, the first switching module communicates the first battery with the converter, and the first battery supplies power to the computer through the first switching module and the converter.

The first battery and the second battery respectively comprise a negative electrode, a positive electrode and a connector end, the length of a metal sheet of the negative electrode is larger than that of a metal sheet of the positive electrode, and the length of a metal sheet of the positive electrode is larger than that of a metal sheet of the connector end.

The output end of the power adapter is connected between the first switching module and the second input end of the converter through a first diode, and is connected between the second switching module and the second input end of the converter through a second diode, wherein the anode of the first diode and the anode of the second diode are connected to the output end of the power adapter.

The first switching module comprises a first N-type field effect transistor, a second N-type field effect transistor, a third N-type field effect transistor, a fourth N-type field effect transistor, a fifth N-type field effect transistor, a first P-type field effect transistor, a second P-type field effect transistor, a third P-type field effect transistor, a first diode and a third diode, wherein:

The grid electrode of the first N-type field effect transistor is connected to the control module, the source electrode is grounded, and the drain electrode is connected to the grid electrode of the first P-type field effect transistor through a first resistor;

the grid electrode of the first P-type field effect transistor is connected to the cathode of the first diode and is connected to the second input end of the converter through a second resistor, and the anode of the first diode is connected to the output end of the power adapter; the source electrode of the first P-type field effect tube is connected to the second input end of the converter, the drain electrode of the first P-type field effect tube is connected to the drain electrode of the second P-type field effect tube, the drain electrode of the third P-type field effect tube and the anode of the third diode, and the cathode of the third diode is connected to the second input end of the converter;

the source electrode of the second P-type field effect transistor is connected to the output end of the charging module, and is connected to the drain electrode of the second N-type field effect transistor through a third resistor and a fourth resistor, and the grid electrode of the second P-type field effect transistor is connected between the third resistor and the fourth resistor;

the source electrode of the second N-type field effect transistor is grounded, and the grid electrode is connected to the control module;

the source electrode of the third P-type field effect transistor is connected to the first battery, the source electrode is connected with the grid electrode through a fifth resistor, and the grid electrode is connected to the drain electrode of the third N-type field effect transistor and the drain electrode of the fourth N-type field effect transistor through a sixth resistor;

The source electrode of the third N-type field effect transistor is grounded, and the grid electrode is connected to the connector end of the second battery and is connected with a 3.3V power supply through a seventh resistor;

the source electrode of the fourth N-type field effect transistor is grounded, the grid electrode is connected to the drain electrode of the fifth N-type field effect transistor, and the fourth N-type field effect transistor is connected to the first battery through an eighth resistor;

and the source electrode of the fifth N-type field effect transistor is grounded, and the grid electrode is connected to the control module.

The second switching module comprises a sixth N-type field effect transistor, a seventh N-type field effect transistor, an eighth N-type field effect transistor, a ninth N-type field effect transistor, a tenth N-type field effect transistor, a fourth P-type field effect transistor, a fifth P-type field effect transistor, a sixth P-type field effect transistor, a second diode and a fourth diode, wherein:

the grid electrode of the sixth N-type field effect transistor is connected to the control module, the source electrode is grounded, and the drain electrode is connected to the grid electrode of the fourth P-type field effect transistor through a ninth resistor;

the grid electrode of the fourth P-type field effect transistor is connected to the cathode of the second diode, and is connected to the second input end of the converter through a tenth resistor, and the anode of the second diode is connected to the output end of the power adapter; the source electrode of the fourth P-type field effect transistor is connected to the second input end of the converter, the drain electrode of the fourth P-type field effect transistor is connected to the drain electrode of the fifth P-type field effect transistor, the drain electrode of the sixth P-type field effect transistor and the anode of the fourth diode, and the cathode of the fourth diode is connected to the second input end of the converter;

The source electrode of the fifth P-type field effect transistor is connected to the output end of the charging module and is connected to the drain electrode of the seventh N-type field effect transistor through an eleventh resistor and a twelfth resistor, and the grid electrode of the fifth P-type field effect transistor is connected between the eleventh resistor and the twelfth resistor;

the source electrode of the seventh N-type field effect transistor is grounded, and the grid electrode is connected to the control module;

the source electrode of the sixth P-type field effect transistor is connected to the second battery, the source electrode and the grid electrode are connected through a thirteenth resistor, and the grid electrode is connected to the drain electrode of the eighth N-type field effect transistor and the drain electrode of the ninth N-type field effect transistor through a fourteenth resistor;

the source electrode of the eighth N-type field effect transistor is grounded, and the grid electrode is connected to the connector end of the first battery and is connected with a 3.3V power supply through a fifteenth resistor;

the source electrode of the ninth N-type field effect transistor is grounded, and the drain electrode of the ninth N-type field effect transistor is connected to the drain electrode of the tenth N-type field effect transistor and is connected to the second battery through a sixteenth resistor;

and the source electrode of the tenth N-type field effect transistor is grounded, and the grid electrode is connected to the control module.

The first battery and the second battery each comprise a negative electrode, a positive electrode and a connector end, the length of the metal sheet of the negative electrode is larger than that of the metal sheet of the positive electrode, the length of the metal sheet of the positive electrode is larger than that of the metal sheet of the connector end, and the control module is connected to the connector end of the first battery and the connector end of the second battery.

The control module is a singlechip.

The utility model has the beneficial effects that: according to the power management system, through the arrangement of the control module, the first switching module and the second switching module, the first battery and the second battery are free from primary and secondary parts in arrangement, one battery can be arbitrarily selected to charge or discharge during charging or discharging, and the battery can be conveniently switched during plugging and unplugging of the power adapter and the battery, and the first battery and the second battery are free from primary and secondary parts in arrangement and can be replaced, so that the performance of a computer is ensured, and the service life of the computer is prolonged; according to the utility model, through the arrangement of the lengths of the negative electrode, the positive electrode and the metal sheet at the connector end of the first battery and the second battery, the control module can recognize the insertion and the extraction of the batteries at the first time, so that the batteries are rapidly switched to charge or discharge, and the hot plug of the charging or the discharging of the batteries is realized; according to the utility model, through the arrangement of the first switching module and the second switching module, the system is not required to be powered off and shut down in the processes of battery switching charging or discharging, power adapter plugging and unplugging and battery replacement, and the battery is supported to be replaced under full working conditions such as charging and discharging, starting and shutting down, light load and full load of the system, low electric quantity and high electric quantity, and the like, and the system is not required to be powered off and shut down, so that the system work continuity of the reinforced notebook computer can be ensured; according to the utility model, only one control module and one charging module are needed, so that the charge and discharge management of the first battery and the second battery can be realized, the charging modules are not needed to be additionally arranged, and the customized double-battery management chip is not needed to be additionally arranged at high cost, so that the circuit structure is simple, and the cost is lower; therefore, the power management system for the reinforced notebook computer can support hot plug of the power adapter and the battery and arbitrarily switch the battery to charge and discharge with a simple circuit structure.

Drawings

For a further understanding of the nature and technical aspects of the present utility model, reference should be made to the following detailed description of the utility model and to the accompanying drawings, which are provided for purposes of reference only and are not intended to limit the utility model.

In the drawings of which there are shown,

fig. 1 is a block diagram illustrating a power management system for a reinforced notebook computer according to an embodiment of the present utility model.

Fig. 2-5 are circuit diagrams of a power management system for a reinforced notebook computer according to an embodiment of the present utility model.

Detailed Description

In order to further explain the technical means adopted by the present utility model and the effects thereof, the following detailed description is given with reference to the preferred embodiments of the present utility model and the accompanying drawings.

As shown in fig. 1, the power management system for a reinforced notebook computer of the present utility model includes a power adapter 10, a converter 20, a charging module 30, a first switching module 40, a first battery 50, a second switching module 60, a second battery 70, and a control module 80. The power adapter 10 is used for converting ac power provided by the external power source 92 into dc power and providing the dc power to the converter 20. The converter 20 is used for converting the voltage to convert the direct current output by the power adapter 10 into the direct current required by the computer system 91 to supply power to the computer system 91; converting the direct current output by the first battery 50 and the second battery 70 into direct current required by the computer system 91 to supply power to the computer system 91; and converting the direct current output from the power adapter 10 into direct current required by the charging module 30 for charging the first battery 50 and the second battery 70 through the charging module 30.

Specifically, the output of the power adapter 10 is connected to a first input of the converter 20, and the detection end of the power adapter 10 is connected to the control module 80. The first battery 50 is connected to the second input of the converter 20 via the first switching module 40, and the second battery 70 is connected to the second input of the converter 20 via the second switching module 60. The converter 20 supplies power to the computer system 91 of the reinforced notebook computer through a first output terminal thereof, a second output terminal of the converter 20 is connected to an input terminal of the charging module 30, and an output terminal of the charging module 30 is connected to the first battery 50 through the first switching module 40 and to the second battery 70 through the second switching module 60. The control module 80 is also connected to the first switching module 40, the second switching module 60, the first battery 50, and the second battery 70.

The control module 80 is connected to the detecting end of the power adapter 10, and can receive the connection signal or the disconnection signal from the detecting end, so as to determine whether the power adapter is electrically connected to the computer and supply power to the computer system. The control module 80 is connected to the first battery 50 and the second battery 70, acquires battery information states from the first battery 50 and the second battery 70, including a data terminal and a clock terminal connected to the first battery and the second battery, and further, the control module 80 may be further connected to a connector terminal of the first battery 50 and a connector terminal of the second battery 70, and receive a disconnection signal and a connection signal from the connector terminal to determine the connection states of the first battery 50 and the second battery 70. Further, the connector end of the first battery 50 may also be connected to the second switching module 60 (not shown in fig. 1), mainly for ensuring that the second switching module 60 does not communicate the second battery 70 with the charging module 30 when the first battery 50 is charged; likewise, the connector end of the second battery 70 is also connected to the first switching module 40 (not shown in fig. 1), mainly for ensuring that the first switching module 40 does not communicate the first battery 50 with the charging module 30 when the second battery 70 is charged.

In one embodiment, the first battery 50 and the second battery 70 each include a negative electrode, a positive electrode, and a connector end, wherein the length of the metal sheet of the negative electrode is greater than that of the metal sheet of the positive electrode, and the length of the metal sheet of the positive electrode is greater than that of the metal sheet of the connector end, and the connector end serves as an identification end of the battery and is connected to the control module 80 for identification of insertion and extraction of the battery.

Because the lengths of the metal sheets of the cathodes of the first battery 50 and the second battery 70 are longest, the lengths of the metal sheets of the anodes are shortest, when the first battery 50 or the second battery 70 is hot-plugged and charged, the cathodes are firstly connected, and then the anodes are connected, a charging loop can be quickly formed at this time, contact arcs caused by the anodes are avoided, chips of a main board can be avoided from being burnt, and the connector ends are finally connected, namely, after the first battery 50 or the second battery 70 forms a loop on the main board, the control module 80 reads a connection signal transmitted by the connector ends and then performs a battery charging switching action, so that the battery charging and hot-plug can be smoothly realized.

Since the lengths of the metal sheets of the cathodes of the first battery 50 and the second battery 70 are longest, the lengths of the metal sheets of the anodes are second, and the lengths of the metal sheets of the connector ends are shortest, when the first battery 50 or the second battery 70 which is discharging and supplies power to the computer system is pulled out, the connector ends are shortest, firstly, a disconnection signal is transmitted to the control module 80 to inform the control module 80 that the battery is separated from the main board, and at the moment, the anodes and the cathodes are also powered on the main board, therefore, when the first battery 50 or the second battery 70 which is discharging is pulled out, the control module 80 can switch to the other battery (the second battery 70 or the first battery 50) to supply power by utilizing the process of completely separating the disconnection signal from the battery anode from the main board, at the moment, the condition of starting and powering down does not exist, and in addition, the cathodes of the battery are longest, the integrity of the battery signal to the positive electrode of the power supply can be better ensured in the battery pulling out process, and thus the electrothermal plug of the battery can be smoothly realized.

In the power management system of the reinforced notebook computer of the present utility model, the power adapter 10 is plugged in to supply power to the power system 91 for the highest priority regardless of power on or power off, discharging in preference to the battery (including the first battery 50 and the second battery 70), and allowing the battery (including the first battery 50 and the second battery 70) to be charged.

Thus, the output of the power adapter 10 may be connected between the first switching module 40 and the second input of the converter 20 via a first diode, and may also be connected between the second switching module 60 and the second input of the converter 20 via a second diode, wherein the anode of the first diode and the anode of the second diode are connected to the output of the power adapter 10. This ensures that the power supply system 91 is supplied with power for the highest priority by the power adapter 10 being plugged in, prior to discharging the first battery 50 and the second battery 70.

In an embodiment, the charging process of the first battery 50 and the second battery 70 by the power management system of the reinforced notebook computer of the present utility model may be: when the control module 80 receives a connection signal from the detection end of the power adapter 10, the first switching module 40 and the second switching module 60 switch the charging of the first battery 50 and the second battery 70, so that the external power source 92 charges the first battery 50 through the power adapter 10, the converter 20, the charging module 30 and the first switching module 40, or charges the second battery 70 through the power adapter 10, the converter 20, the charging module 30 and the second switching module 60.

Specifically, when the control module 80 performs the charge switching of the first battery 50 or the second battery 70 through the first switching module 40 and the second switching module 60, it sends a charge switching signal to the first switching module 40 and the second switching module 60, the first switching module 40 disconnects the charging module 30 from the first battery 50 and the converter 20 from the first battery 50, and the second switching module 60 disconnects the charging module 30 from the second battery 70 and the converter 20 from the second battery 70, thereby entering the charge switching safety mode. After entering the charging switch safety mode for a first preset time, for example, 10 seconds, the control module 80 sends a charging signal to the first switch module 40, the first switch module 40 communicates the first battery 50 with the charging module 30, the external power source 92 charges the first battery 50 through the power adapter 10, the converter 20, the charging module 30 and the first switch module 40, or sends a charging signal to the second switch module 60, the second switch module 60 communicates the second battery 70 with the charging module 30, and the external power source 92 charges the second battery 70 through the power adapter 10, the converter 20, the charging module 30 and the second switch module 60.

As described above, in order to prevent the high voltage battery from flowing backward to the low voltage battery due to the circuit communication between the two batteries when the battery charging is switched, the present utility model sets a charge switching safety mode, that is, the first and second batteries 50 and 70 are simultaneously disconnected from the charging module 30 by controlling the first and second switching circuits 40 and 60 through the control module 80, so that the high voltage battery is prevented from flowing backward to the low voltage battery due to the circuit communication between the two batteries, at this time, the charging module 30 does not charge any battery, and at the same time, the power adapter 10 supplies power to the power system 91 for the highest priority as described above, and the first and second batteries 50 and 70 are not discharged.

After entering the charge switching safety mode for a first preset time, the charging of the first battery 50 alone or the charging of the second battery 70 by the charging module 30 may be selected under the control of the control module 80.

In the above process of switching and charging the battery, the computer system 91 is always powered by the external power source 92 through the power adapter 10, so as to keep the power supply continuous.

The above-described situation applies to a case where the battery is switched from a discharge state to a charge state, that is, a case where the power adapter 10 is connected to a computer, that is, a case where it is necessary to seamlessly switch the power supply from either one of the batteries 50 or 70 to the computer system 91 from the external power supply 92 to the computer system 91 via the power adapter 10, and at the same time, the external power supply 92 may supply power to either one of the batteries 50 or 70 via the power adapter 10. When the power adapter 10 is plugged into a computer, that is, the control module 80 receives a connection signal from the detection end of the power adapter 10, the control module 80 controls the circuit to enter the above-mentioned charge switching safety mode.

Further, during the charging process of the first battery 50, if the control module 80 and the second switching module 60 receive a disconnection signal from the connector end of the first battery 50, that is, when the first battery 50 is pulled out, the control module 80 sends a charging signal to the second switching module 60, the second switching module 60 communicates the second battery 70 with the charging module 30, and the external power source charges the second battery 70 through the power adapter 10, the converter 20, the charging module 30 and the second switching module 60.

Similarly, during the charging process of the second battery 70, if the control module 80 and the first switching module 40 receive the disconnection signal from the connector end of the second battery 70, that is, if the second battery 70 is pulled out, the control module 80 sends the charging signal to the first switching module 40, the first switching module 40 communicates the first battery 50 with the charging module 30, and the external power source charges the first battery 50 through the power adapter 10, the converter 20, the charging module 30 and the first switching module 40.

In an embodiment, in the power management system for a reinforced notebook computer of the present utility model, the discharging process of the first battery 50 and the second battery 70 may be: when the control module 80 receives the disconnection signal from the detection end of the power adapter 10, the first switching module 40 and the second switching module 60 perform the discharging switching of the first battery 50 and the second battery 70, so that the first battery 50 supplies power to the computer (the computer system 91) through the first switching module 40 and the converter 20, or the second battery 70 supplies power to the computer (the computer system 91) through the second switching module 50 and the converter 20.

Specifically, when the control module 80 performs the discharging switching of the first battery 50 and the second battery 70 through the first switching module 40 and the second switching module 60, it sends a discharging switching signal to the first switching module 40 and the second switching module 60, and the first switching module 40 and the second switching module 60 communicate the high voltage of the first battery 50 and the second battery 70 with the converter 20 to supply power to the computer system 91, thereby entering the discharging switching safety mode. After entering the discharge switching safety mode for a second preset time, for example, 10 seconds, the control module 80 sends a discharge signal to the first switching module 40 and the second switching module 60, the first switching module 40 communicates the first battery 50 with the converter 20, the first battery 50 supplies power to the computer system 91 through the first switching module 40 and the converter 20, or the second switching module 60 communicates the second battery 70 with the converter 20, and the second battery 70 supplies power to the computer system 91 through the second switching module 60 and the converter 20.

As described above, in order to prevent the high-power battery from flowing backward to the low-power battery due to the circuit connection between the two batteries, and to keep the power supply to the computer system 91, the system cannot be powered down, a discharging switching safety mode is provided, that is, the control module 80 controls the first switching module 40 and the second switching module 60 to connect the high voltage of the first battery 50 and the second battery 70 with the converter 20 to supply power to the computer system 91, preferably, the first battery 50 and the second battery 70 can be provided with a voltage isolation, such as a diode, to perform the voltage isolation to prevent the backflow between the batteries.

After entering the discharge switching safety mode for a second preset time, the computer system 91 may be selectively powered by the first battery 50 or the second battery 70 under the control of the control module 80.

In the above process of switching the discharge of the battery, although the external power is disconnected, the computer system 91 can be continuously powered by the battery without power failure.

The above-described situation is applicable to a case where the battery is switched from a charged state to a discharged state, that is, the power adapter 10 is suddenly pulled out from a state of always being connected to the computer and charging any one of the batteries 50 or 70, that is, it is required to seamlessly switch from the external power source 92 to the power supply of the computer system 91 via the power adapter 10 to the discharge of any one of the batteries 50 or 70 to supply the power to the computer system 91. When the power adapter 10 is disconnected from the computer, i.e. the control module 80 receives the disconnection signal from the detection end of the power adapter 10, the control module 80 controls the circuit to enter the above-mentioned discharging switching safety mode.

Further, during the discharging process of the first battery 50, when the control module 80 and the second switching module 60 receive the disconnection signal from the connector end of the first battery 50, that is, when the first battery 50 is pulled out, the control module 80 sends the discharging signal to the second switching module 60, the second switching module 60 communicates the second battery 70 with the converter 20, and the second battery 70 supplies power to the computer system 91 via the second switching module 60 and the converter 20.

Similarly, during discharging of the second battery 70, when the control module 80 and the first switching module 40 receive a disconnection signal from the connector end of the second battery 70, that is, when the second battery 70 is pulled out, the control module 80 sends a discharging signal to the first switching module 40, the first switching module 40 communicates the first battery 50 with the converter 20, and the first battery 50 supplies power to the computer system 91 via the first switching module 60 and the converter 20.

In one embodiment, the control module 80 may be a single-chip microcomputer.

Fig. 2 to 5 are circuit diagrams of a power management system for a reinforced notebook computer according to an embodiment of the present utility model, wherein fig. 2 is a circuit diagram of a power adapter 10, a converter 20, a charging module 30, a first switching module 40, a first battery 50, a second switching module 60, and a second battery 70 of the power management system, fig. 3 is a connection diagram of each port of the control module 80, and fig. 4 and 5 are circuit diagrams of the first switching module 40 and the second switching module 60 in fig. 2, respectively.

As shown IN fig. 2-5, the control module 80 is a single chip microcomputer, and its ports are respectively connected to the data terminal sm_bat_sda_a, the clock terminal sm_bat_scl_a, the connector terminal a_batt_in of the first battery 50, the data terminal sm_bat_sda_b, the clock terminal sm_bat_scl_b, the connector terminal b_batt_in of the second battery 70, the dch_s_a terminal, the chg_s_a terminal, the use_s_a terminal of the first switching module, and the dch_s_b terminal, the chg_b terminal, and the use_s_b terminal of the second switching module. The port of the control module 80 is also connected to the detection terminal ad_det (not shown in fig. 2) of the power adapter 10.

The first switching module 40 includes a first N-type fet PQ1, a second N-type fet PQ6, a third N-type fet PQ5, a fourth N-type fet PQ8, a fifth N-type fet PQ7, a first P-type fet PQ2, a second P-type fet PQ3, a third P-type fet PQ4, a first diode PD1, and a third diode PD2.

The gate of the first N-type field effect transistor PQ1 is used as the dch_s_a end, connected to the singlechip 80, the source is grounded, and the drain is connected to the gate of the first P-type field effect transistor PQ2 through the first resistor PR 2. The gate of the first P-type field effect transistor PQ2 is connected to the cathode of the first diode PD1 and to the second input terminal of the converter 20 via the second resistor PR 1. An anode of the first diode PD1 is connected to the output terminal ad+ of the power adapter 10. The source of the first P-type field effect transistor PQ2 is connected to the second input terminal of the converter 20, the drain is connected to the drain of the second P-type field effect transistor PQ3, the drain of the third P-type field effect transistor PQ4, the anode of the third diode PD2, and the cathode of the third diode PD2 is connected to the second input terminal of the converter 20. The source of the second P-type fet PQ3 is connected to the output terminal of the charging module 30 and connected to the drain of the second N-type fet PQ6 via the third resistor PR4 and the fourth resistor PR7, and the gate of the second P-type fet PQ3 is connected between the third resistor PR4 and the fourth resistor PR 7. The source electrode of the second N-type field effect transistor PQ6 is grounded, and the grid electrode is used as a CHG_S_A end and is connected to the singlechip 80. The source of the third P-type fet PQ4 is connected to the first battery 50, the source and gate are connected through the fifth resistor PR3, and the gate is connected to the drain of the third N-type fet PQ5 and the drain of the fourth N-type fet PQ8 through the sixth resistor PR 6. The source of the third N-type FET PQ5 is grounded, and the gate is connected to the connector terminal B_BATT_IN of the second battery 70 and is connected to a 3.3V power supply via a seventh resistor PR 8. The fourth N-type fet PQ8 has its source grounded, its gate connected to the drain of the fifth N-type fet PQ7, and connected to the first battery 50 via an eighth resistor PR 5. The source electrode of the fifth N-type field effect transistor PQ7 is grounded, and the grid electrode is used as a USE_S_A end and is connected to the singlechip 80.

The second switching module 60 has the same structure as the first switching module 40, and includes a sixth N-type fet PQ9, a seventh N-type fet PQ16, an eighth N-type fet PQ13, a ninth N-type fet PQ14, a tenth N-type fet PQ15, a fourth P-type fet PQ10, a fifth P-type fet PQ11, a sixth P-type fet PQ12, a second diode PD3, and a fourth diode PD4, as shown in fig. 5.

The gate of the sixth N-type fet PQ9 is connected to the singlechip 80 as the dch_s_b terminal, the source is grounded, and the drain is connected to the gate of the fourth P-type fet PQ10 through the ninth resistor PR 10. The gate of the fourth P-type field effect transistor PQ10 is connected to the cathode of the second diode PD3 and to the second input terminal of the converter 20 via a tenth resistor PR 9. An anode of the second diode PD3 is connected to an output terminal of the power adapter 10. The source of the fourth P-type field effect transistor PQ10 is connected to the second input terminal of the converter 20, the drain is connected to the drain of the fifth P-type field effect transistor PQ11, the drain of the sixth P-type field effect transistor PQ12, and the anode of the fourth diode PD4, and the cathode of the fourth diode PD4 is connected to the second input terminal of the converter 20. The source of the fifth P-type field effect transistor PQ11 is connected to the output terminal of the charging module 30 and connected to the drain of the seventh N-type field effect transistor PQ16 through the eleventh resistor PR13 and the twelfth resistor PR16, and the gate of the fifth P-type field effect transistor is connected between the eleventh resistor PR13 and the twelfth resistor PR 16. The source electrode of the seventh N-type field effect transistor PQ16 is grounded, and the grid electrode is used as a CHG_B end and connected to the singlechip 80. The sixth P-type fet PQ12 has a source connected to the second battery 70, a source connected to a gate through a thirteenth resistor PR11, and a gate connected to the drain of the eighth N-type fet PQ13 and the drain of the ninth N-type fet PQ14 through a fourteenth resistor PR 14. The eighth N-type fet PQ13 has its source grounded, its gate connected to the connector terminal a_batt_in of the first battery 50 and connected to a 3.3V power supply via a fifteenth resistor PR 15. The source of the ninth N-type fet PQ14 is grounded, and the drain is connected to the drain of the tenth N-type fet PQ15 and to the second battery 70 via a sixteenth resistor PR 12. The source electrode of the tenth N-type field effect transistor PQ15 is grounded, and the grid electrode is used as USE_S_B and is connected to the singlechip 80.

The working principle of the power management system of this embodiment is as follows:

first, whether powered on or off, the power adapter 10 is plugged in to supply power to the power system 91 for the highest priority, discharge in preference to the first battery 50, the second battery 70, and allow the first battery 50, the second battery 70 to charge. The single chip microcomputer 80 determines the battery information states and the battery connection states of the first battery 50 and the second battery 70 through the information of the data terminal sm_bat_sda_a, the clock terminal sm_bat_scl_a and the connector terminal a_batt_in of the first battery 50, the data terminal sm_bat_sda_b, the clock terminal sm_bat_scl_b and the connector terminal b_batt_in of the second battery 70, wherein the connector terminal a_batt_in and the connector terminal b_batt_in are connected to the battery cathode through resistors inside the batteries so that the single chip microcomputer 80 can charge the first battery 50 or the second battery 70 selectively.

Switching the charging process:

the singlechip 80 sends a charging switching signal to the first switching module 40 and the second switching module 60, including: transmitting a low level to the chg_s_a end of the first switching module 40 and the chg_b end of the second switching module 60, namely, the gate of the second N-type fet PQ6 and the gate of the seventh N-type fet PQ 16; transmitting low level to the usesjb terminal of the first switching module 40 and the usesjb terminal of the second switching module 60, namely the gate of the fifth N-type field effect transistor PQ7 and the gate of the tenth N-type field effect transistor PQ 15; the low level is sent to the dch_s_a end of the first switching module 40 and the dch_s_b end of the first switching module 40, i.e. the gate of the first N-type fet PQ1 and the gate of the sixth N-type fet PQ 9.

At this time, the second PQ3 and the fifth PQ11 are kept turned off, and the third PQ4 and the sixth PQ12 are kept turned on. Since the output voltage ad+ of the power adapter 10 is 19V, which is higher than the voltages of the first battery 50 and the second battery 70, the first PQ2 and the fourth PQ10 on the discharge paths of the first battery 50 and the second battery 70 are turned off. Thus, the first switching module 40 disconnects the charging module 30 from the first battery 50, and the converter 20 from the first battery 50, and the second switching module 60 disconnects the charging module 30 from the second battery 70, and the converter 20 from the second battery 70, and enters a charging switching safety mode, at this time, the first battery 50 and the second battery 70 are not in a charging state nor in a discharging state, and the high-voltage battery is prevented from being reversed to the low-voltage battery due to the circuit connection between the two batteries.

After entering the charge switching safety mode for 10 seconds (without limitation), if the first battery 50 is charged separately, the single chip 80 sends a charging signal to the first switching module 40, which includes: the high level is sent to chg_s_a of the first switching module 40, i.e., the gate of the second N-fet PQ 6. The use_s_a, dch_s_a, and chg_b, use_s_b, dch_s_b ends of the first switching module 40 and the second switching module 60 remain unchanged in the state of the charge switching safety mode. At this time, the charging current enters the first battery 50 from the charging module 30 through the second pfet PQ3 and the third pfet PQ4, thereby completing the switching to charge the first battery 50 alone.

Similarly, after entering the charge switching safety mode for 10 seconds (without limitation), if the second battery 70 is charged separately, the single chip 80 sends a charging signal to the second switching module 60, including: the high level is sent to chg_b of the second switching module 60, i.e., the gate of the seventh N-fet PQ 16. The use_s_b, dch_s_b, chg_s_a, use_s_a, dch_s_a of the second switching module 60 remain unchanged in the state of the charge switching safety mode. At this time, the charging current enters the second battery 70 from the charging module 30 via the fifth pfet PQ11 and the sixth pfet PQ12, thereby completing the switching to charge the second battery 70 alone.

Switching the discharge process:

the single-chip microcomputer 80 sends a discharge switching signal to the first switching module 40 and the second switching module 60, including: transmitting low level to the usesjb terminal of the first switching module 40 and the usesjb terminal of the second switching module 60, namely the gate of the fifth N-type field effect transistor PQ7 and the gate of the tenth N-type field effect transistor PQ 15; the low level is sent to the chg_s_a end of the first switching module 40 and the chg_b end of the second switching module 60, i.e., the gate of the second N-type fet PQ6 and the gate of the seventh N-type fet PQ16, to prevent the battery voltage from flowing backward onto the charging module 30; the low level is sent to the dch_s_a end of the first switching module 40 and the dch_s_b end of the first switching module 40, i.e. the gate of the first N-type fet PQ1 and the gate of the sixth N-type fet PQ 9.

At this time, the third PQ4 and the sixth PQ12 are turned on; the first PQ2 and the fourth PQ10 are turned off; the third diode PD2 and the fourth diode PD4 are turned on unidirectionally, and isolate the voltages of the first battery 50 and the second battery 70, so as to prevent the backflow between the batteries, at this time, the higher voltage of the first battery 50 and the second battery 70 supplies power to the computer system 91, and enters a discharge switching safety mode.

After entering the discharging switching safety mode for 10 seconds (without limitation), if the first battery 50 is controlled to supply power to the computer system 91, the single chip 80 sends a discharging signal to the first switching module 40, including sending a high level to the dch_s_a end of the first switching module 40, i.e. the gate of the first N-type field effect transistor PQ 1; and sends a high level to the usesjb terminal of the second switching module 60, i.e., the gate of the tenth N-type fet PQ 15. The use_s_a, chg_s_a and chg_b ends of the first switching module 40 and the second switching module 60 keep the state of the discharge switching safety mode unchanged. At this time, the first PQ2 is turned on, the sixth PQ12 is turned off, and the discharge current from the first battery 50 enters the converter 20 through the third PQ4 and the first PQ2, and the power is supplied to the computer system 91 through the converter 20.

Similarly, after entering the discharge switching safety mode for 10 seconds (without limitation), if the second battery 70 is controlled to supply power to the computer system 91, the single chip 80 sends a discharge signal to the second switching module 60, including sending a high level to the dch_s_b end of the second switching module 60, that is, the gate of the sixth N-type field effect transistor PQ 9; the high level is sent to the usesj a terminal of the first switching module 40, i.e. the gate of the fifth N-fet PQ 7. The use_s_b, chg_b and chg_s_a ends of the second switching module 60 and the dch_s_a ends of the first switching module 60 keep the state of the discharge switching safety mode unchanged. At this time, the fourth PQ10 is turned on, the third PQ4 is turned off, and the discharge current from the second battery 70 enters the converter 20 through the sixth PQ12 and the fourth PQ10, and the power is supplied to the computer system 91 through the converter 20.

Switching from charging to discharging:

when the power adapter 10 is pulled out during the process of connecting the power adapter 10 to the computer and charging any one of the batteries 50 or 70, it is necessary to seamlessly switch to a state of discharging from the battery to supply power to the computer system 91.

Once the power adapter 10 is pulled out, the level signal of the detection terminal ad_det of the power adapter 10 changes from high to low, for example, from 3.3V to 0V, and the single chip 80 detects the low level signal, i.e., the off signal, from the detection terminal ad_det of the power adapter 10, and determines that the power adapter 10 is pulled out and is no longer connected to the computer, and sends a discharge switching signal to the first switching module 40 and the second switching module 60 to enter the discharge switching safety mode. The first battery 50 or the second battery 70 may then be controlled to discharge alone, as described above.

Switching from discharging to charging process:

when the power adapter 10 is not connected, the singlechip 8 controls any battery 50 or 70 to supply power to the computer system 91, and then the power adapter 10 is connected to the computer, so that seamless switching to the power supply of the power adapter to the computer system is required.

Once the power adapter 10 is plugged in, the level signal of the detection terminal ad_det of the power adapter 10 changes from low to high, for example, from 0V to 3.3V, and the single chip 80 detects the high level signal, i.e., the connection signal, from the detection terminal ad_det of the power adapter 10, and determines that the power adapter 10 has been plugged in, and sends a charge switching signal to the first switching module 50 and the second switching module 70 to enter the charge switching safety mode. The individual charging of the first battery 50 or the second battery 70 may then be controlled as described above.

The battery being charged is pulled out:

taking the first battery 50 as an example, during the process of charging the first battery 50, the chg_s_a end of the first switching module 40 is at a high level, and the use_s_a end, the dch_s_a end, the b_batt_in end of the first switching module 40 and the chg_b end, the use_s_b end, the dch_s_b end, and the a_batt_in end of the second switching module 60 are at a low level.

The first battery 50 being charged is pulled out, and since the length of the metal sheet of the connector terminal a_batt_in of the first battery 50 is the shortest, the connector terminal a_batt_in of the first battery 50 is withdrawn during the pulling out of the first battery 50, the terminal a_batt_in is changed from low level to high level, 0.3V is changed to 3.3V, that is, the gate of the eighth N-type field effect transistor PQ13 of the second switching module 60 is changed to high level, and thus the eighth N-type field effect transistor PQ13 of the second switching module 60 is changed from off to on, and the sixth P-type field effect transistor PQ12 is changed from off to on. At this time, the single chip 80 determines that the first battery 50 is pulled out due to receiving the disconnection information (high level) from the connector terminal a_batt_in of the first battery 50, and sends a charging signal to the second battery 50, which includes: the high level is sent to chg_b of the second switching module 60, i.e., the gate of the seventh N-fet PQ 16. Then, the fifth pfet PQ11 is turned on, and the charging current enters the second battery 70 from the charging module 30 via the fifth pfet PQ11 and the sixth pfet PQ12, thereby completing the switching to charge the second battery 70.

Similarly, the second battery 70 may be charged and switched to the first battery 50 for charging, which is not described herein.

The discharging battery is pulled out:

taking the first battery 50 as an example, the computer system 91 is powered by the first battery 50 without the power adapter 10 connected. The first battery 50 is pulled out and needs to be switched to power the computer system 91 by the second battery 70 without power failure of the system.

During the discharging process of the first battery 50, the dch_s_a terminal of the first switching module 40 and the use_s_b terminal of the second switching module 60 are at high level, and the use_s_a terminal, chg_s_a terminal, b_batt_in terminal of the first switching module 40 and the chg_b terminal, dch_s_b terminal, a_batt_in terminal of the second switching module 60 are at low level.

The discharging first battery 50 is pulled out, and since the length of the metal sheet of the connector end a_batt_in of the first battery 50 is the shortest, the connector end a_batt_in of the first battery 50 is withdrawn during the pulling out of the first battery 50, the terminal a_batt_in is changed from low level 0.3V to high level 3.3V, that is, the gate of the eighth N-type field effect transistor PQ13 of the second switching module 60 is changed to high level, and thus the eighth N-type field effect transistor PQ13 of the second switching module 60 is changed from off to on, and the sixth P-type field effect transistor PQ12 is changed from off to on. Then, the discharging current enters the converter 20 from the second battery 70 via the sixth P-type field effect transistor PQ12 and the fourth diode PD4, and is supplied to the computer system 91 via the converter 20 to maintain the system from power failure. At this time, the single chip microcomputer 80 determines that the first battery 50 is pulled out due to receiving the disconnection information (high level) from the connector terminal a_batt_in of the first battery 50, and sends a discharging signal to the second battery 70, including sending the high level to the dch_s_b terminal of the second switching module 60, i.e. the gate of the sixth N-type field effect transistor PQ 9. Then, the fourth PQ10 is turned on, and the discharge current from the second battery 70 enters the converter 20 through the sixth PQ12 and the fourth PQ10, and the computer system 91 is supplied with power through the converter 20, thereby completing the switching to the discharge from the second battery 70.

Similarly, the discharging of the second battery 70 may be switched to the discharging of the first battery 50, and thus, the description thereof will be omitted.

The embodiments of the power management system for a reinforced notebook computer of the present utility model have been described above, and it is apparent from the above description that the power management system for a reinforced notebook computer of the present utility model can support hot plug of a power adapter and a battery and optionally switch the battery to charge and discharge.

In the power management system, through the arrangement of the control module, the first switching module and the second switching module, the first battery and the second battery are not divided into a main battery and a secondary battery in arrangement, one battery can be arbitrarily selected to charge or discharge during charging or discharging, and the charging and discharging of the battery can be conveniently switched during plugging and unplugging of the power adapter and the battery without power failure. In addition, the first battery and the second battery of the utility model have no main and auxiliary parts in arrangement, and can be replaced to ensure the performance of the computer and prolong the service life of the computer. According to the utility model, through setting the lengths of the metal sheets at the negative electrode, the positive electrode and the connector end of the first battery and the second battery, the control module can recognize the insertion and the extraction of the batteries at the first time, so that the batteries are rapidly switched to charge or discharge, and the hot plug of the charging or discharging of the batteries is realized. According to the power management system for the reinforced notebook computer, through the arrangement of the first switching module and the second switching module, the system is not required to be powered off and shut down in the processes of battery switching charging or discharging, power adapter plugging and battery replacement, and the system is not required to be powered off and shut down under full working conditions of charging and discharging, power on and shut down, light and full load of the system, low electric quantity, high electric quantity and the like, so that the system continuity of the reinforced notebook computer can be ensured. According to the utility model, only one control module and one charging module are needed, so that the charge and discharge management of the first battery and the second battery can be realized, the charging modules are not needed to be additionally arranged, and the customized double-battery management chip is not needed to be additionally arranged at high cost, so that the circuit structure is simple, and the cost is lower.

In the above, it should be apparent to those skilled in the art that various other modifications and variations can be made in accordance with the technical solution and the technical idea of the present utility model, and all such modifications and variations are intended to fall within the scope of the claims of the present utility model.

Claims

1. The power management system for the reinforced notebook computer is characterized by comprising a power adapter, a converter, a charging module, a first switching module, a first battery, a second switching module, a second battery and a control module, wherein the output end of the power adapter is connected to the first input end of the converter, and the detection end of the power adapter is connected to the control module; the first battery is connected to the second input end of the converter through the first switching module, and the second battery is connected to the second input end of the converter through the second switching module; the converter supplies power to the computer through a first output end of the converter, a second output end of the converter is connected to an input end of the charging module, and an output end of the charging module is connected to the first battery through the first switching module and connected to the second battery through the second switching module; the control module is also connected to the first switching module, the second switching module, the first battery and the second battery;

2. The power management system according to claim 1, wherein the control module transmits a charge switching signal to the first switching module and the second switching module when the control module performs charge switching of the first battery or the second battery through the first switching module and the second switching module, the first switching module disconnects the charge module from the first battery, the converter from the first battery, the second switching module disconnects the charge module from the second battery, the converter from the second battery, thereby entering a charge switching safety mode, and the control module transmits a charge signal to the first switching module after entering the charge switching safety mode for a first preset time, the first switching module connects the first battery to the charge module, an external power source connects the charge module to the first battery via the power adapter, the converter, the charge module, the first switching module to charge the first battery, or transmits a charge signal to the second switching module connects the second battery to the charge module via the second switching module, the charge module to the external power source.

3. The power management system according to claim 2, wherein the control module transmits a discharge switching signal to the first and second switching modules when the control module performs discharge switching of the first and second batteries through the first and second switching modules, the first and second switching modules communicate a voltage higher than the first and second batteries with the converter to supply power to the computer, thereby entering a discharge switching safety mode, and the control module transmits a discharge signal to the first and second switching modules after entering the discharge switching safety mode for a second preset time, the first switching module communicates the first battery with the converter, the first battery supplies power to the computer via the first switching module, the converter, or the second switching module communicates the second battery with the converter, and the second battery supplies power to the computer via the second switching module.

4. The power management system of claim 3, wherein the control module is connected to a connector end of the first battery and a connector end of the second battery, the connector end of the first battery further connected to the second switching module, the connector end of the second battery further connected to the first switching module;

5. The power management system of claim 1 or 4, wherein the first battery and the second battery each comprise a negative electrode, a positive electrode, and a connector end, the length of the metal sheet of the negative electrode being greater than the length of the metal sheet of the positive electrode, the length of the metal sheet of the positive electrode being greater than the length of the metal sheet of the connector end.

6. The power management system of claim 1, wherein the output of the power adapter is connected between the first switching module and the second input of the converter via a first diode and between the second switching module and the second input of the converter via a second diode, wherein the anode of the first diode and the anode of the second diode are connected to the output of the power adapter.

7. The power management system of any of claims 1-4, wherein the first switching module comprises a first N-type field effect transistor, a second N-type field effect transistor, a third N-type field effect transistor, a fourth N-type field effect transistor, a fifth N-type field effect transistor, a first P-type field effect transistor, a second P-type field effect transistor, a third P-type field effect transistor, a first diode, and a third diode, wherein:

8. The power management system of claim 7, wherein the second switching module comprises a sixth N-type field effect transistor, a seventh N-type field effect transistor, an eighth N-type field effect transistor, a ninth N-type field effect transistor, a tenth N-type field effect transistor, a fourth P-type field effect transistor, a fifth P-type field effect transistor, a sixth P-type field effect transistor, a second diode, and a fourth diode, wherein:

9. The power management system of claim 8, wherein the first battery and the second battery each comprise a negative electrode, a positive electrode, and a connector end, the length of the metal sheet of the negative electrode is greater than the length of the metal sheet of the positive electrode, the length of the metal sheet of the positive electrode is greater than the length of the metal sheet of the connector end, and the control module is connected to the connector end of the first battery and the connector end of the second battery.

10. The power management system of claim 1, wherein the control module is a single-chip microcomputer.