CN112531814A - Multi-battery charging management system and method - Google Patents
Multi-battery charging management system and method Download PDFInfo
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- CN112531814A CN112531814A CN202011294937.6A CN202011294937A CN112531814A CN 112531814 A CN112531814 A CN 112531814A CN 202011294937 A CN202011294937 A CN 202011294937A CN 112531814 A CN112531814 A CN 112531814A
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- 238000007726 management method Methods 0.000 claims abstract description 28
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 6
- 238000011217 control strategy Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000010277 constant-current charging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010280 constant potential charging Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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Abstract
The invention provides a multi-battery charging management system which comprises a plurality of ideal diode modules, a plurality of switch control modules, a system voltage-stabilized power supply and a microprocessor, wherein a charging power supply is connected to the corresponding switch control modules through the ideal diode modules, the switch control modules are connected with corresponding batteries, the charging power supply is connected with the system voltage-stabilized power supply, the system voltage-stabilized power supply is connected with the microprocessor, and the microprocessor is connected with the switch control modules. The invention relates to a multi-battery charging management method. The invention uses an ideal diode module for each path to perform charging isolation, and when the charger is pulled out, the switch loop between the batteries can be quickly switched off, thereby effectively solving the problem that the batteries are mutually charged due to improper control of the microprocessor when the batteries are charged. Because the hardware control strategy is used, the program problems of program runaway, microprocessor bolt lock and the like during software control are avoided to a certain extent, and the software control is more stable, reliable and safe when the software control system is used.
Description
Technical Field
The invention relates to the technical field of battery management, in particular to a multi-battery charging management system and method.
Background
At present, the battery application is often applied to a plurality of spare batteries. For example, in the field of unmanned aerial vehicles, since the endurance of a single battery is generally short, a user often purchases a plurality of standby batteries in order to increase the endurance, and even when the airplane is designed, the user uses a plurality of batteries to supply power, so as to increase the endurance. However, such multi-battery applications are cumbersome if manually charged one by one when the user charges the battery. For this reason, manufacturers often develop devices for multi-battery charge management to facilitate user usage. At present, generally, the charging management control of multiple batteries has more software control, but because a microprocessor has the problems of program runaway and bolt locking, the charging management control of multiple batteries is not stable and reliable in hardware control. Especially, the mutual charging problem between batteries may lead to safety accidents such as fire and explosion of the batteries in serious cases.
Disclosure of Invention
In order to overcome the defects of the prior art, an object of the present invention is to provide a multi-battery charging management system, which can effectively solve the problem that when a plurality of batteries are charged, the batteries are charged with each other due to improper control of a microprocessor.
In order to achieve one of the purposes, the invention adopts the following technical scheme:
a multi-battery charging management system comprises a plurality of ideal diode modules, a plurality of switch control modules, a system voltage-stabilized power supply and a microprocessor, wherein the charging power supply is connected to the corresponding switch control modules through the ideal diode modules, the switch control modules are connected with corresponding batteries, the charging power supply is connected with the system voltage-stabilized power supply, the system voltage-stabilized power supply is connected with the microprocessor, and the microprocessor is connected with the switch control modules; the ideal diode module is a circuit with forward conduction and reverse cut-off and is used for conducting the voltage of the charging power supply to the switch control module, the system voltage-stabilizing power supply is used for taking the electricity from the charging power supply, reducing and stabilizing the voltage and then providing the electricity to the microprocessor, and the microprocessor is used for acquiring the voltage or electric quantity information of the battery and controlling the switch of the switch control module to enable the charging power supply to charge the plurality of batteries simultaneously.
Further, the charging system further comprises a voltage acquisition module, the charging power supply is connected with the voltage acquisition module, the voltage acquisition module is connected with the microprocessor, and the voltage acquisition module is used for acquiring the working voltage of the charging power supply in real time.
And the display module is connected with the control port of the microprocessor and is used for displaying various states of the system.
Further, the ideal diode module is designed by adopting an ideal diode or a positive high-voltage ideal diode controller.
Further, the switch control module is designed by adopting an MOS tube or a triode or an IGBT.
Further, the switch control module comprises a first MOS transistor, a second MOS transistor, a third MOS transistor, a voltage stabilizing diode, a first resistor, a second resistor, a third resistor and a fourth resistor, the drain electrode of the first MOS tube is connected with a power supply end, the grid electrode of the first MOS tube is connected with the drain electrode of the third MOS tube through the second resistor, the source electrode of the first MOS tube is connected with the grid electrode of the first MOS tube through the first resistor, the voltage stabilizing diode is connected with the first resistor in parallel, the anode of the voltage stabilizing diode is connected with the grid electrode of the second MOS tube, the cathode of the voltage stabilizing diode is connected with the source electrode of the second MOS tube, the drain electrode of the second MOS tube is connected with the battery end, the source electrode of the third MOS tube is grounded, the grid electrode of the third MOS tube is grounded through the fourth resistor, and the grid electrode of the third MOS tube is connected with the control port of the microprocessor through the third resistor.
Further, the microprocessor is connected with a communication port of the battery.
The second objective of the present invention is to provide a multi-battery charging management method, which can effectively solve the problem of mutual charging between batteries due to improper control of a microprocessor when a plurality of batteries are charged.
In order to achieve the second purpose, the invention adopts the following technical scheme:
a multi-battery charge management method, comprising the steps of:
s1, after the voltage of the charging power supply is reduced and stabilized by the system stabilized voltage supply, stable working voltage is provided for the microprocessor;
s2, conducting the voltage of the charging power supply to the front end of the corresponding switch control module through the ideal diode module;
and S3, reading the voltage or electric quantity of each battery by the microprocessor, and if the voltage or electric quantity is in a chargeable range, simultaneously opening the switches of the switch control modules to enable the charging power supply to charge the batteries simultaneously.
Further, the step S3 includes the voltage acquisition module acquiring the voltage of the charging power supply in real time, and if the voltage of the charging power supply is within the preset range, the microprocessor reads the voltage or the electric quantity of each battery, and if the voltage of the charging power supply is not within the preset range, the microprocessor closes the switch of each switch control module.
Further, the method also comprises a step S4 of displaying various states of the system in real time through the display module.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses an ideal diode module for each path to perform charging isolation, and when the charger is pulled out, the switch loop between the batteries can be quickly turned off, thereby effectively solving the problem that the batteries are mutually charged due to improper control of the microprocessor when the batteries are charged. Because the hardware control strategy is used, the program problems of program runaway, microprocessor bolt lock and the like during software control are avoided to a certain extent, and the software control is more stable, reliable and safe when the software control system is used. In addition, due to the adoption of the ideal diode module, the line loss voltage drop of the charging circuit can be reduced to the maximum extent, and the battery can be fully charged to the maximum extent.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a block diagram of a multi-battery charging management system of the present invention;
FIG. 2 is a circuit diagram of a switch control module according to an embodiment of the present invention;
fig. 3 is a flowchart of a multi-battery charging management method according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
A multi-battery charging management system is shown in figure 1 and comprises a plurality of ideal diode modules, a plurality of switch control modules, a system voltage-stabilized power supply and a microprocessor, wherein a charging power supply is connected to the corresponding switch control modules through the ideal diode modules, the switch control modules are connected with corresponding batteries, the charging power supply is connected with the system voltage-stabilized power supply, the system voltage-stabilized power supply is connected with the microprocessor, and the microprocessor is connected with the switch control modules. In this embodiment, the charging power supply is a charger or other power supplies with constant-current and constant-voltage charging, the ideal diode module is a circuit with forward conduction and reverse cut-off, and the line loss is very small when the charging power supply is conducted in the forward direction, so that the voltage of the charging power supply is conducted to the switch control module, a positive high-voltage ideal diode controller such as a Linte LTC4357 is adopted to form a circuit, and the circuit can also be a circuit built by ideal diodes and other devices and having the characteristics. The system voltage-stabilizing power supply is used for obtaining electricity from the charging power supply, reducing and stabilizing the voltage and providing the electricity to the microprocessor, and the microprocessor is used for obtaining the voltage or electric quantity information of the batteries and controlling the switch of the switch control module to enable the charging power supply to charge the batteries at the same time. In this embodiment, the parallel charging refers to the condition that a plurality of batteries are charged together under the condition of almost equal voltage and electric quantity, and the parallel charging mainly enables the charger to work in the constant current charging stage all the time, so as to shorten the total charging time of the plurality of batteries to the greatest extent. It should be understood that fig. 1 illustrates a charging management system with two batteries, and charging management systems corresponding to other numbers of batteries can be designed according to actual requirements.
In an embodiment, the charging system further comprises a voltage acquisition module, the charging power supply is connected with the voltage acquisition module, the voltage acquisition module is connected with the microprocessor, and the voltage acquisition module is used for acquiring the working voltage of the charging power supply in real time, if the voltage of the charging power supply is within the range. At the moment, the microprocessor reads the voltage or the electric quantity of each battery, and if the voltage or the electric quantity is in a range capable of being charged, the switches of the switch control modules are simultaneously turned on, so that the charging power supply can charge a plurality of batteries simultaneously; and meanwhile, the voltage acquisition module acquires the working voltage of the charging power supply in real time, and once the working voltage of the charging power supply is found not to be in a range, the switch control module is controlled to close the switch of the loop, so that the battery is stopped to be charged. The display module is connected with the control port of the microprocessor and used for displaying various states of the system so as to prompt a user.
In one embodiment, the switch control module is designed by a MOS transistor, a triode or an IGBT, and the switch control module is in a closed state when the switch control module is not powered by default. As shown in fig. 2, the switch control module includes a first MOS transistor Q1, a second MOS transistor Q2, a third MOS transistor Q3, a zener diode ZD1, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4, a drain of the first MOS transistor is connected to the POWER supply terminal POWER, a gate of the first MOS transistor is connected to a drain of the third MOS transistor through the second resistor, a source of the first MOS transistor is connected to the gate of the first MOS transistor through the first resistor, the zener diode is connected in parallel to the first resistor, an anode of the zener diode is connected to the gate of the second MOS transistor, a cathode of the zener diode is connected to the source of the second MOS transistor, a drain of the second MOS transistor is connected to the battery terminal BAT, a source of the third MOS transistor is grounded, a gate of the third MOS transistor is grounded through the fourth resistor, and a gate of the third MOS transistor is connected to the control port EN of the microprocessor through the third resistor. When the microprocessor is not in control, the grid-source voltage of Q3 is 0, so Q3 is in off state, and the grid-source voltages of Q1 and Q2 are also 0, so that the power supply terminal and the battery terminal can not be conducted. Similarly, when the EN control is high level, the power supply end and the battery end can be conducted.
In one embodiment, the microprocessor may obtain the voltage or power information of the battery without communication or via communication. When the communication mode is used, the battery can communicate with the microprocessor, and at least the voltage or the electric quantity of the battery can be fed back to the microprocessor.
A multi-battery charge management method, as shown in fig. 3, comprising the steps of:
s1, when the system works, the voltage of the charging power supply is reduced and stabilized by the system stabilized voltage supply, and then stable working voltage is provided for the microprocessor;
s2, conducting the voltage of the charging power supply to the front end of the corresponding switch control module through the ideal diode module;
s3, the voltage acquisition module acquires the voltage of the charging power supply in real time, if the voltage of the charging power supply is within a preset range, the microprocessor reads the voltage or electric quantity of each battery, and if the voltage or electric quantity is within a chargeable range, the switches of the switch control modules are simultaneously turned on, so that the charging power supply can charge a plurality of batteries simultaneously. And meanwhile, the voltage acquisition module acquires the voltage of the charging power supply in real time, and once the voltage of the charging power supply is found not to be within a preset range, the switch control module is controlled to close the switch of the loop, so that the battery is stopped to be charged.
And S4, displaying various states of the system in real time through the display module so as to prompt the user.
When the charging power supply of the normally working system is pulled out, the voltage of the battery cannot flow to the power supply end due to the rapid reverse partition of the ideal diode module, so that the system voltage-stabilizing power supply also stops working immediately due to power failure, and the microprocessor also stops working immediately. At the moment, the switch control module is not controlled by the microprocessor, and the switch is also immediately turned off, so that the mutual charging between the batteries is prevented.
The invention uses an ideal diode module for each path to perform charging isolation, and when the charger is pulled out, the switch loop between the batteries can be quickly turned off, thereby effectively solving the problem that the batteries are mutually charged due to improper control of the microprocessor when the batteries are charged. Because the hardware control strategy is used, the program problems of program runaway, microprocessor bolt lock and the like during software control are avoided to a certain extent, and the software control is more stable, reliable and safe when the software control system is used. In addition, due to the adoption of the ideal diode module, the line loss voltage drop of the charging circuit can be reduced to the maximum extent, and the battery can be fully charged to the maximum extent.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A multi-battery charging management system, characterized by: the charging system comprises a plurality of ideal diode modules, a plurality of switch control modules, a system voltage-stabilized power supply and a microprocessor, wherein a charging power supply is connected to the corresponding switch control modules through the ideal diode modules, the switch control modules are connected with corresponding batteries, the charging power supply is connected with the system voltage-stabilized power supply, the system voltage-stabilized power supply is connected with the microprocessor, and the microprocessor is connected with the switch control modules; the ideal diode module is a circuit with forward conduction and reverse cut-off and is used for conducting the voltage of the charging power supply to the switch control module, the system voltage-stabilizing power supply is used for taking the electricity from the charging power supply, reducing and stabilizing the voltage and then providing the electricity to the microprocessor, and the microprocessor is used for acquiring the voltage or electric quantity information of the battery and controlling the switch of the switch control module to enable the charging power supply to charge the plurality of batteries simultaneously.
2. A multi-battery charge management system according to claim 1, wherein: the charging system further comprises a voltage acquisition module, the charging power supply is connected with the voltage acquisition module, the voltage acquisition module is connected with the microprocessor, and the voltage acquisition module is used for acquiring the working voltage of the charging power supply in real time.
3. A multi-battery charge management system according to claim 1, wherein: the display device further comprises a display module, wherein the display module is connected with the control port of the microprocessor and is used for displaying various states of the system.
4. A multi-battery charge management system according to claim 1, wherein: the ideal diode module is designed by adopting an ideal diode or a positive high-voltage ideal diode controller.
5. A multi-battery charge management system according to claim 1, wherein: the switch control module is designed by adopting an MOS tube or a triode or an IGBT.
6. The multi-battery charge management system of claim 5, wherein: the switch control module comprises a first MOS tube, a second MOS tube, a third MOS tube, a voltage stabilizing diode, a first resistor, a second resistor, a third resistor and a fourth resistor, the drain electrode of the first MOS tube is connected with a power supply end, the grid electrode of the first MOS tube is connected with the drain electrode of the third MOS tube through the second resistor, the source electrode of the first MOS tube is connected with the grid electrode of the first MOS tube through the first resistor, the voltage stabilizing diode is connected with the first resistor in parallel, the anode of the voltage stabilizing diode is connected with the grid electrode of the second MOS tube, the cathode of the voltage stabilizing diode is connected with the source electrode of the second MOS tube, the drain electrode of the second MOS tube is connected with the battery end, the source electrode of the third MOS tube is grounded, the grid electrode of the third MOS tube is grounded through the fourth resistor, and the grid electrode of the third MOS tube is connected with the control port of the microprocessor through the third resistor.
7. A multi-battery charge management system according to claim 1, wherein: the microprocessor is connected with a communication port of the battery.
8. A multi-battery charge management method, comprising the steps of:
s1, after the voltage of the charging power supply is reduced and stabilized by the system stabilized voltage supply, stable working voltage is provided for the microprocessor;
s2, conducting the voltage of the charging power supply to the front end of the corresponding switch control module through the ideal diode module;
and S3, reading the voltage or electric quantity of each battery by the microprocessor, and if the voltage or electric quantity is in a chargeable range, simultaneously opening the switches of the switch control modules to enable the charging power supply to charge the batteries simultaneously.
9. The multi-battery charge management method of claim 8, wherein: the step S3 further includes the step of acquiring the voltage of the charging power supply in real time by the voltage acquisition module, reading the voltage or the electric quantity of each battery by the microprocessor if the voltage of the charging power supply is within a preset range, and turning off the switch of each switch control module by the microprocessor if the voltage of the charging power supply is not within the preset range.
10. The multi-battery charge management method of claim 8, wherein: and S4, displaying the various states of the system in real time through the display module.
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| CN202011294937.6A CN112531814A (en) | 2020-11-18 | 2020-11-18 | Multi-battery charging management system and method |
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| CN202011294937.6A CN112531814A (en) | 2020-11-18 | 2020-11-18 | Multi-battery charging management system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113859552A (en) * | 2021-09-27 | 2021-12-31 | 深圳市道通智能航空技术股份有限公司 | Battery management system |
| WO2023011556A1 (en) * | 2021-08-03 | 2023-02-09 | 深圳市道通智能航空技术股份有限公司 | Battery management method and apparatus and unmanned aerial vehicle |
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| CN110391472A (en) * | 2018-04-19 | 2019-10-29 | 中兴通讯股份有限公司 | A kind of cell managing device and mobile terminal |
| CN211790810U (en) * | 2020-01-13 | 2020-10-27 | 深圳市大疆创新科技有限公司 | Charging system, charger, battery pack and movable platform |
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| CN206015096U (en) * | 2016-09-19 | 2017-03-15 | 北京中腐防蚀工程技术有限公司 | The cathodic protection test pile how battery balanced redundant power supply apparatus of remote Acquisition Instrument |
| CN110391472A (en) * | 2018-04-19 | 2019-10-29 | 中兴通讯股份有限公司 | A kind of cell managing device and mobile terminal |
| CN211790810U (en) * | 2020-01-13 | 2020-10-27 | 深圳市大疆创新科技有限公司 | Charging system, charger, battery pack and movable platform |
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| WO2023011556A1 (en) * | 2021-08-03 | 2023-02-09 | 深圳市道通智能航空技术股份有限公司 | Battery management method and apparatus and unmanned aerial vehicle |
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Address after: 518055 Shenzhen, Guangdong, Nanshan District Xili street, No. 1001, Zhiyuan Road, B1 9. Applicant after: Shenzhen daotong intelligent Aviation Technology Co.,Ltd. Address before: 518055 Shenzhen, Guangdong, Nanshan District Xili street, No. 1001, Zhiyuan Road, B1 9. Applicant before: AUTEL ROBOTICS Co.,Ltd. |
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