CN108879892B - Automatic switching power supply system for double battery packs - Google Patents
Automatic switching power supply system for double battery packs Download PDFInfo
- Publication number
- CN108879892B CN108879892B CN201811096933.XA CN201811096933A CN108879892B CN 108879892 B CN108879892 B CN 108879892B CN 201811096933 A CN201811096933 A CN 201811096933A CN 108879892 B CN108879892 B CN 108879892B
- Authority
- CN
- China
- Prior art keywords
- battery pack
- circuit
- power supply
- battery
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 239000003990 capacitor Substances 0.000 claims description 15
- 102100031577 High affinity copper uptake protein 1 Human genes 0.000 claims description 10
- 101710196315 High affinity copper uptake protein 1 Proteins 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 102100031145 Probable low affinity copper uptake protein 2 Human genes 0.000 description 4
- 101710095010 Probable low affinity copper uptake protein 2 Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 101100102627 Oscarella pearsei VIN1 gene Proteins 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- H02J7/36—Arrangements using end-cell switching
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses an automatic switching power supply system for double battery packs, which relates to the technical field of electronic information and comprises a single chip microcomputer (1), a first battery pack (2), a second battery pack (3), a first voltage detection circuit (4), a second voltage detection circuit (5), a first battery protection circuit (6), a second battery protection circuit (7), a first switching circuit (10) and a second switching circuit (11). The invention connects two groups of batteries into the power supply system at the same time without primary and secondary division, completely supplies power in a peer-to-peer manner, avoids the problem caused by parallel connection of the two groups of batteries, designs a voltage detection circuit, an electric quantity display circuit, a control circuit and a switching circuit for each of the two groups of batteries, is connected with a singlechip, switches one group with more electric quantity to a power supply state through comparison, and circularly switches the power supply until the electric quantity of the two groups of batteries reaches a bottom line to replace the battery group, and improves the service efficiency of the battery group to the maximum extent on the premise of ensuring that the two groups of batteries can supply power in a balanced, stable and long-term manner.
Description
Technical Field
The invention relates to the technical field of electronic information, in particular to an automatic switching power supply system of a double battery pack, which is particularly applied to low-power consumption instruments and meters in dangerous environments as a power supply circuit.
Background
In dangerous fields such as coal mine, chemical industry, oil, etc., explosion-proof place, when using industrial equipment such as instrument and meter, sensor, etc., the switching-in external adapter power supply power leads to explosion danger easily, can not use, and built-in single group battery is because use battery capacity is limited, often does not reach monitoring cycle requirement, need increase the time length of use can increase the capacity through increasing a set of battery. In the current application, two groups of battery packs are powered simultaneously, and are generally connected by adopting a direct parallel connection method and a diode or gate circuit parallel connection method, wherein the defect and danger of mutual charge and discharge caused by inconsistent electric quantity of the two groups of battery packs cannot be solved by the direct parallel connection method, and the problem of voltage drop caused by diode conduction during power supply can occur by the diode or gate circuit parallel connection method.
Disclosure of Invention
In order to solve the technical problems, the invention provides an automatic switching power supply system for double battery packs, wherein two battery packs are connected simultaneously, no primary and secondary parts exist, the automatic switching power supply system has respective voltage detection and electric quantity display, the automatic switching of the power supply of the double battery packs is completed based on the control of a single chip microcomputer, and the service efficiency of the battery is improved.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides an automatic switching power supply system of two batteries, includes singlechip, battery two, voltage detection circuit two, battery protection circuit one, battery protection circuit two, switching circuit one and switching circuit two, battery is connected with battery protection circuit one, voltage detection circuit one respectively, battery is connected with battery protection circuit two, voltage detection circuit two respectively, the input of singlechip is connected with voltage detection circuit one, voltage detection circuit two respectively, the output of singlechip is connected with switching circuit one, switching circuit two respectively, switching circuit one, switching circuit two are connected with battery one, battery two are connected with power supply system voltage output simultaneously, singlechip connects timing circuit, every set time starts voltage detection circuit one and voltage detection circuit two, when battery one voltage is high, switching circuit one is turned on and is used battery one to get into the power supply state, battery two is not worked; when the voltage of the second battery pack is high, the second switching circuit is conducted to enable the second battery pack to enter a power supply state, and the first battery pack does not work.
The battery pack comprises a battery pack I and a battery pack II, and is characterized by further comprising an electric quantity display circuit I and an electric quantity display circuit II, wherein the electric quantity display circuit I and the electric quantity display circuit II are respectively connected with the output end of the singlechip and are respectively used for displaying the electric quantity of the battery pack I and the electric quantity of the battery pack II.
The first battery pack and the second battery pack have the same power supply circuit structure, wherein the first battery pack voltage detection circuit comprises a resistor RA1, a resistor RA2, a resistor RA3, a capacitor CA1 and a singlechip voltage measurement interface end BAT_AD1, the resistor RA1 and the resistor RA2 are connected in series and then are grounded, the voltage division points of the resistor RA1 and the resistor RA2 are connected with the resistor RA3 and the capacitor CA1 and then are grounded, and a node between the capacitors CA1 of the resistor RA3 is connected with the singlechip voltage measurement interface end BAT_AD 1; the first switching circuit comprises a single chip microcomputer control switch interface end CTR1, a resistor RP2, a diode DP1, an NPN triode Q1, a PMOS tube MQ1 and an ideal diode LTC4411, wherein the single chip microcomputer control switch interface end CTR1 is sequentially connected with the resistor RP2, the diode DP1 and a 2-end base electrode of the NPN triode Q1 through a 1-end collector electrode of the NPN triode Q1 and a 2-end grid electrode of the PMOS tube MQ1, a 3-end emitter electrode of the NPN triode Q1 is grounded, a 3-end source electrode of the PMOS tube MQ1 is connected with a POWER1 positive electrode, a 1-end drain electrode is connected with a POWER input end of the ideal diode LTC4411, a 2-end and 3-end ground end of the ideal diode LTC4411 are grounded, a 5-end of the ideal diode LTC is grounded through a capacitor CP1, and the ideal diode LTC4411 of each switching circuit of the first battery set and the second battery set is connected with the voltage output end VOUT in parallel.
The invention has the following beneficial effects:
1) The two groups of batteries are simultaneously connected into the power supply system without primary and secondary division, and are completely powered in a peer-to-peer manner, so that the problem caused by parallel connection of the two groups of batteries is avoided, a voltage detection circuit, an electric quantity display circuit, a control circuit and a switching circuit are respectively designed for the two groups of batteries, the two groups of batteries are connected with a singlechip, a group with more electric quantity is switched to a power supply state through comparison, the power supply is circularly switched until the electric quantity of the two groups of batteries reaches a bottom line to replace the battery pack, and the service efficiency of the battery pack is furthest improved on the premise that the two groups of batteries can supply power in a balanced, stable and long-term manner;
2) The measured voltage value is recorded by the singlechip and can be uploaded to the load host through the data transmission interface so as to display the electric quantity values of the two groups of batteries and serve as a reference for replacing the battery groups;
3) The two battery packs are isolated through the ideal diode, so that the charge and discharge danger caused by potential difference between the two battery packs is effectively blocked, the voltage drop generated when the common diode is conducted is avoided, the output voltage and the input voltage are equal, and the balance and stability of power supply are ensured;
4) The electric quantity display function is provided, and the residual electric quantity values of the two battery packs can be displayed simultaneously through keys; the switching circuit adopts a low-power consumption design, designs a timing circuit, and is in a dormant state at ordinary times, the current is less than 10uA, the power supply burden of the two battery packs is not increased, the voltage detection can set a detection period, and the switching power supply circuit carries out voltage detection once every other detection period so as to judge the residual electric quantity of the two battery packs and switch;
5) Simple structure, low cost improves the availability factor of double battery group greatly, is convenient for extensive popularization and application.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a circuit diagram of the present invention;
FIG. 3 is a schematic diagram of a timing circuit;
Fig. 4 is a circuit diagram of a single chip interface.
Detailed Description
The invention is described in detail below with reference to the attached drawings and the specific embodiments:
As shown in fig. 1-2, an automatic switching power supply system for double battery packs comprises a single chip microcomputer 1, a battery pack 2, a battery pack 3, a voltage detection circuit 4, a voltage detection circuit 5, a battery protection circuit 6, a battery protection circuit 7, a switching circuit 10 and a switching circuit 11, wherein the battery pack 1 is respectively connected with the battery protection circuit 6 and the voltage detection circuit 4, the battery pack 3 is respectively connected with the battery protection circuit 7 and the voltage detection circuit 5, the input end of the single chip microcomputer 1 is respectively connected with the voltage detection circuit 4 and the voltage detection circuit 5, the output end of the single chip microcomputer 1 is respectively connected with the switching circuit 10 and the switching circuit 11, the switching circuit 10 and the switching circuit 11 are respectively connected with the battery pack 1 and the battery pack 3, the battery pack 2 and the battery pack 3 are simultaneously connected with the voltage output end of a power supply system, the single chip microcomputer 1 is connected with a timing circuit 12, the voltage detection circuit 4 and the voltage detection circuit 5 are started every set time, and when the battery pack 2 is in a voltage-up state, and the battery pack 10 is switched into a non-power supply state when the battery pack 2 is in a power supply state; when the voltage of the battery pack II 3 is high, the switching circuit II 11 is conducted to enable the battery pack II 3 to enter a power supply state, and the battery pack I2 does not work.
The system further comprises a first electric quantity display circuit 8 and a second electric quantity display circuit 9, wherein the first electric quantity display circuit 8 and the second electric quantity display circuit 9 are respectively connected with the output end of the singlechip 1 and are respectively used for displaying the electric quantity of the first battery pack 2 and the second battery pack 3.
As shown in fig. 4, the power supply circuit structures of the first battery pack 2 and the second battery pack 3 are the same, wherein the first voltage detection circuit 5 of the first battery pack 2 comprises a resistor RA1, a resistor RA2, a resistor RA3, a capacitor CA1 and a singlechip voltage measurement interface terminal bat_ad1, the resistor RA1 and the resistor RA2 are connected in series and divided and then grounded, the voltage division points of the resistor RA1 and the resistor RA2 are connected with the resistor RA3 and the capacitor CA1 and then grounded, and a node between the resistor RA3 and the capacitor CA1 is connected with the singlechip voltage measurement interface terminal bat_ad 1; the first switching circuit 10 comprises a single chip microcomputer control switch interface end CTR1, a resistor RP2, a diode DP1, an NPN triode Q1, a PMOS tube MQ1 and an ideal diode LTC4411, wherein the single chip microcomputer control switch interface end CTR1 is sequentially connected with the resistor RP2, the diode DP1 and a 2-end base electrode of the NPN triode Q1 through a 1-end collector electrode of the NPN triode Q1 and a 2-end grid electrode of the PMOS tube MQ1, a 3-end emitter electrode of the NPN triode Q1 is grounded, a 3-end source electrode of the PMOS tube MQ1 is connected with an anode of the POWER supply input end of the ideal diode LTC4411, a 2-end and 3-end drain electrodes of the ideal diode LTC4411 are grounded, a 5-end of the ideal diode LTC4411 is grounded through a capacitor CP1, and the ideal diode LTC4411 of each switching circuit of the first battery set 2 and the second battery set 3 is connected with the voltage output end VOUT in parallel.
The power supply circuit of the second battery pack 3 is similar, and the specific structure is not described again.
In this embodiment, the specific working procedure of the present invention is as follows:
the POWER1 interface and the POWER2 interface of the switching circuit are respectively connected into two groups of battery packs, wherein the POWER1 battery pack I POWER supply circuit and the POWER2 battery pack II POWER supply circuit are partially similar, so the POWER1 battery pack I POWER supply circuit is used for illustration.
In the POWER-on process, the 2 end of the POWER1 interface is connected with the positive electrode of the first battery pack, and the 1 end is connected with the negative electrode of the first battery pack. An anode of the battery pack is connected with a 3-end source electrode of the PMOS tube MQ1 through a self-recovery fuse F1, a 100K resistor RP1 is connected in parallel between the 3-end source electrode and a 2-end grid electrode of the PMOS tube MQ1, and the 2-end grid electrode of the PMOS tube MQ1 is grounded through a 10UF capacitor CB 1. When POWWE1 is electrified for the first time, resistance-capacitance charging is carried out on the resistors RP1 and CB1 instantly, the charging time is about 30ms, a voltage of the POWER1 battery pack is loaded to two ends of the resistor RP1, so that the gate-source voltage of the PMOS tube MQ1 is equal to the voltage of the two ends of the resistor RP1, the voltage is equivalent to the voltage of the POWER1 battery pack at the moment, the PMOS tube Q1 is conducted, the 1-end POWER input end of an ideal diode LTC4411 is connected through the 1-end drain after the conduction, the 5-end output voltage is conducted by the ideal diode LTC4411 and is used as the output POWER supply end of one input of the battery pack of the switching circuit, and the voltage is grounded and filtered through the capacitor CP1, so that the output voltage is more stable, and the ripple coefficient is reduced.
Similarly, the POWER input end of the POWER2 interface also works in the POWER-on process, and the details are not repeated here. The self-recovery fuses F1 and F2 play a role in protecting circuits, and prevent input voltages from being too high and damaging circuit components.
After the power-on is finished, the singlechip 1 supplies power normally, the program runs normally at the moment, the singlechip 1 is in a power-saving mode, enters a low-power mode at ordinary times to prevent unnecessary power consumption, an RTC timing module is built in the singlechip, an RTC timing circuit 12 is formed by externally connecting a 32.768kHz crystal oscillator Y2, a CY1 and a CY2 capacitor, after the timing time of the RTC is reached (for 10 minutes) through programming, the singlechip wakes up from the low-power mode, detects the voltages of two groups of battery packs, and determines whether the singlechip enters a switching state, wherein the principle of the RTC timing module is shown in a figure 3.
After the voltage of the connected battery pack at the POWER1 end is divided by the resistor RA1 and the resistor RA2, the resistance value of the resistor RA1 is 200K, the resistance value of the resistor RA2 is 100K, and the resistance values of the resistor RA1 and the resistor RA2 adopt high-precision resistors (the precision is not lower than 1%), so that the voltage division accuracy is ensured. The voltage value after the voltage division is calculated to be about: VIN1 RA 2/(RA 1+ RA 2) =100K/300 k=vin 1/3;
The voltage value is connected to a P2.6 interface of a singlechip control circuit through a resistor RA3 of 1K, an internal 12-bit AD converter is integrated with the P2.6 interface, and the input voltage BAT_AD1 of P2.6 is obtained after the converter is subjected to analog-digital conversion, and the input voltage BAT_AD1 is 1/3 of the voltage of the POWER supply input end of the POWER1, so that the input voltage VIN1 of the POWER supply end is obtained through calculation.
Similarly, the voltage of the battery pack connected to the POWER2 end is divided through a resistor RA4 and a resistor RA5, the resistance value of the resistor RA4 is 200K, the resistance value of the resistor RA5 is 100K, and the resistance values of the resistor RA4 and the resistor RA5 adopt resistors with high precision (the precision is not lower than 1%), so that the accuracy of the voltage division is ensured.
The voltage value after the voltage division is calculated to be about: VIN2 RA 5/(RA 4+ RA 5) =100K/300 k=vin 2/3;
The voltage value is connected into a P1.4 interface of a singlechip control circuit through a resistor RA6 of 1K, an internal 12-bit AD converter is integrated in the P1.4 interface, the input voltage BAT_AD2 of P1.4 is obtained after the converter is subjected to analog-digital conversion, and the input voltage BAT_AD2 is 1/3 of the voltage of the POWER supply input end of the POWER2, so that the input voltage VIN2 of the POWER supply end is obtained through calculation.
After the singlechip measures the voltages of the two groups of battery packs of POWER1 and POWER2 in the time awakening period, the following conditions appear in the battery voltage difference through comparison:
When VIN1-VIN2 is more than 0.1V, the SCM controls the switch interface end CTR1 to output high level, and the SCM controls the switch interface end CTR2 to output low level. The interface end CTR1 of the singlechip control switch is a high-level conduction diode DP1, the negative end of the diode DP1 is connected into an NPN triode Q1, the base electrode at the 2 end and the emitter electrode at the 3 end of the NPN triode Q1 are conducted positively, the drain electrode at the 1 end and the emitter electrode at the 3 end of the NPN triode Q1 are connected, the drain electrode at the 1 end of the NPN triode Q1 is connected with the grid electrode of a PMOS tube MQ1, the grid voltage of the PMOS tube MQ1 is instantly pulled down after the NPN triode Q1 is conducted, the PMOS tube MQ1 is conducted to supply POWER to an ideal diode LTC4411 of U3, and the POWER1 enters a POWER supply state. Meanwhile, the singlechip controls the interface end CTR2 to be low level, the diode DP3 is cut off, the 2-end base electrode and the 3-end emitter electrode of the NPN triode Q2 are cut off, the NPN triode Q2 cannot be conducted, the PMOS tube MQ2 is cut off, the POWER supply of the POWER2 cannot be connected with an ideal diode LTC4411 in a circuit of the POWER supply, and the POWER supply of the POWER supply enters a non-POWER supply state.
When VIN2-VIN1 is more than 0.1V, the SCM controls the switch interface end CTR2 to output high level, and the SCM controls the switch interface end CTR1 to output low level. The interface end CTR2 of the singlechip control switch is a high-level conduction diode DP3, the negative end of the diode DP3 is connected into an NPN triode Q2, the base electrode at the 2 end and the emitter electrode at the 3 end of the NPN triode Q2 are conducted positively, the drain electrode at the 1 end and the emitter electrode at the 3 end of the NPN triode Q2 are connected, the drain electrode at the 1 end of the NPN triode Q2 is connected with the grid electrode of a PMOS tube MQ2, the grid voltage of the PMOS tube MQ2 is instantly pulled down after the NPN triode Q2 is conducted, the PMOS tube MQ2 is conducted to supply POWER to a U4 ideal diode LTC4411, and the POWER2 enters a POWER supply state. Meanwhile, the control end of the interface end CTR1 of the single chip microcomputer is at a low level, the diode DP1 is cut off, the base electrode at the 2 end and the emitter electrode at the 3 end of the NPN triode Q1 are cut off, the NPN triode Q1 cannot be conducted, the PMOS tube MQ1 is cut off, the POWER supply of the POWER1 cannot be connected with an ideal diode LTC4411 in a circuit of the POWER1, and the POWER2 enters a non-POWER supply state.
When VIN1-VIN2 is less than or equal to 0.1V, the POWER of the POWER supply end is equal to that of the POWER supply end, the POWER supply state of the two battery packs is not switched by the switching circuit, the original battery POWER supply is maintained at the moment, and the voltage value is detected again after the singlechip 1 wakes up next time, so as to determine whether to switch.
When the singlechip 1 wakes up the detection electric quantity regularly to judge whether to switch or not, the detected voltage of the input ends of the POWER1 and the POWER2 is stored in the singlechip 1, an external serial port is provided as a transmission interface, the interface consists of a serial port transmitting end TXD, a serial port receiving end RXD and a grounding GND, and when an external load or an instrument and meter and the like are connected into the system for supplying POWER, the data transmission interface can be connected in an expanding way and is used for reading the voltage values of the double-group battery packs for display and early warning.
In this embodiment, the switching circuit is triggered by the key to display the residual electric power values of the first battery pack 2 and the second battery pack 3. The display mode adopts a highlighting nixie tube energy slot mode, 10 energy slots are adopted, each energy slot represents 10% of electric quantity, the residual electric quantity is less than 20% and is red, 20% -50% and yellow, and more than 50% and green are displayed, so that the display is clear and visual.
The invention can prolong the service time of the battery, and simultaneously can detect and feed back the electric quantity of the battery, thereby facilitating the user to grasp the electric quantity information in time and replace the battery in advance when the electric quantity is insufficient.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.
Claims (1)
1. The utility model provides a double-battery automatic switching power supply system which is characterized in that the double-battery automatic switching power supply system comprises a single chip microcomputer (1), a battery pack I (2), a battery pack II (3), a voltage detection circuit I (4), a voltage detection circuit II (5), a battery protection circuit I (6), a battery protection circuit II (7), a switching circuit I (10) and a switching circuit II (11), wherein the battery pack I (2) is respectively connected with the battery protection circuit I (6) and the voltage detection circuit I (4), the battery pack II (3) is respectively connected with the battery protection circuit II (7) and the voltage detection circuit II (5), the input end of the single chip microcomputer (1) is respectively connected with the voltage detection circuit I (4) and the voltage detection circuit II (5), the output end of the single chip microcomputer (1) is connected with the switching circuit I (10) and the switching circuit II (11), the switching circuit I (10) and the switching circuit II (11) are respectively connected with the battery pack I (2) and the battery pack II (3), the battery pack I (2) and the battery pack II (3) are simultaneously connected with the power supply system voltage output end every other, the voltage detection circuit II (4) is connected with the single chip microcomputer (1), and the voltage detection circuit II (2) is set when the voltage is started, the first switching circuit (10) is conducted to enable the first battery pack (2) to enter a power supply state, and the second battery pack (3) does not work; when the voltage of the battery pack II (3) is high, the switching circuit II (11) is conducted to enable the battery pack II (3) to enter a power supply state, and the battery pack I (2) does not work; the battery pack comprises a battery pack I (2) and a battery pack II (3), and also comprises an electric quantity display circuit I (8) and an electric quantity display circuit II (9), wherein the electric quantity display circuit I (8) and the electric quantity display circuit II (9) are respectively connected with the output end of the singlechip (1) and are respectively used for displaying the electric quantity of the battery pack I (2) and the battery pack II (3); the power supply circuit structures of the first battery pack (2) and the second battery pack (3) are the same, wherein the voltage detection circuit I (4) of the first battery pack (2) comprises a resistor RA1, a resistor RA2, a resistor RA3, a capacitor CA1 and a singlechip voltage measurement interface end BAT_AD1, the resistor RA1 and the resistor RA2 are connected in series and then grounded, the voltage division points of the resistor RA1 and the resistor RA2 are connected with the resistor RA3 and the capacitor CA1 and then grounded, and the node between the resistor RA3 and the capacitor CA1 is connected with the singlechip voltage measurement interface end BAT_AD 1; the first switching circuit (10) comprises a single chip microcomputer control switch interface end CTR1, a resistor RP2, a diode DP1, an NPN triode Q1, a PMOS tube MQ1 and an ideal diode LTC4411, wherein the single chip microcomputer control switch interface end CTR1 is sequentially connected with the resistor RP2, the diode DP1 and a 2-end base electrode of the NPN triode Q1 through a 1-end collector electrode of the NPN triode Q1 and a 2-end grid electrode of the PMOS tube MQ1, a 3-end emitter electrode of the NPN triode Q1 is grounded, a 3-end source electrode of the PMOS tube MQ1 is connected with an anode of POWER1, a 1-end drain electrode is connected with a POWER supply input end of the ideal diode LTC4411, a 2-end and 3-end ground electrode of the ideal diode LTC4411 are grounded, a 5-end of the ideal diode LTC4411 is connected with a voltage output end VOUT through a capacitor CP1, and the ideal diode LTC4411 of each switching circuit of the first battery pack (2) and the second battery pack (3) is connected with the voltage output end VOUT in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096933.XA CN108879892B (en) | 2018-09-20 | 2018-09-20 | Automatic switching power supply system for double battery packs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811096933.XA CN108879892B (en) | 2018-09-20 | 2018-09-20 | Automatic switching power supply system for double battery packs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108879892A CN108879892A (en) | 2018-11-23 |
| CN108879892B true CN108879892B (en) | 2024-04-19 |
Family
ID=64324568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811096933.XA Active CN108879892B (en) | 2018-09-20 | 2018-09-20 | Automatic switching power supply system for double battery packs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108879892B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787373A (en) * | 2020-12-30 | 2021-05-11 | 重庆峘能电动车科技有限公司 | Battery pack charging and discharging method, circuit, system and equipment |
| CN112925252A (en) * | 2021-03-31 | 2021-06-08 | 洛阳嘉盛电源科技有限公司 | Switch device with sleep function and control method thereof |
| CN113525565B (en) * | 2021-08-24 | 2022-11-01 | 宁波欧诺车业有限公司 | Dual-power switchable electric vehicle |
| CN117791846B (en) * | 2024-02-26 | 2024-07-09 | 西安第六镜网络科技有限公司 | Dual-power conversion device |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1983761A (en) * | 2006-05-29 | 2007-06-20 | 华为技术有限公司 | Controller for switching main power supply |
| CN102593946A (en) * | 2012-02-21 | 2012-07-18 | 德讯科技股份有限公司 | Dual-power-supply automatic switching circuit based on power MOSFET application |
| CN202363960U (en) * | 2011-08-18 | 2012-08-01 | 上海韦尔半导体股份有限公司 | Double-battery power supply device |
| WO2013078668A1 (en) * | 2011-12-02 | 2013-06-06 | 拓实电子（深圳）有限公司 | Solar dual-supply circuit |
| CN103219552A (en) * | 2012-01-18 | 2013-07-24 | 天津市泰威科技发展有限公司 | Device for detection maintenance and balanced maintenance of power battery pack |
| CN103522916A (en) * | 2013-10-31 | 2014-01-22 | 济南宏昌车辆有限公司 | Double power sources switching control system of electric car |
| CN103545914A (en) * | 2013-10-31 | 2014-01-29 | 中国兵器工业集团第二一四研究所苏州研发中心 | Dual-path electricity supply circuit with automatic switching function |
| CN203522260U (en) * | 2013-10-11 | 2014-04-02 | Tcl通力电子（惠州）有限公司 | Cell power-supplying control circuit and a double-power-supply power supplying device |
| CN104022563A (en) * | 2014-06-19 | 2014-09-03 | 天津金米特电子有限公司 | Dual-battery-pack switching circuit used for electric vehicles |
| CN106685063A (en) * | 2016-11-22 | 2017-05-17 | 上海云衡科技有限公司 | Power switching circuit |
| CN106787129A (en) * | 2016-12-15 | 2017-05-31 | 山东金洲科瑞节能科技有限公司 | A kind of power-supply management system for being automatically obtained main power supply switching |
| WO2017117913A1 (en) * | 2016-01-04 | 2017-07-13 | 中兴通讯股份有限公司 | Charging and discharging method and apparatus for battery group |
| WO2018028316A1 (en) * | 2016-08-11 | 2018-02-15 | 中兴通讯股份有限公司 | Terminal charging control method, device and terminal |
| CN107947330A (en) * | 2017-12-28 | 2018-04-20 | 杭州创乐电子科技有限公司 | Multigroup battery powered automatic switching control equipment and control method |
| CN108092402A (en) * | 2017-12-26 | 2018-05-29 | 宁波水表股份有限公司 | A kind of more power supply automatic switchover circuits |
| CN207652129U (en) * | 2017-12-26 | 2018-07-24 | 宁波水表股份有限公司 | A kind of more power supply automatic switchover circuits |
| CN207765577U (en) * | 2017-12-29 | 2018-08-24 | 深圳市艾特智能科技有限公司 | Battery capacity manages circuit |
| CN208738893U (en) * | 2018-09-20 | 2019-04-12 | 山东思科赛德矿业安全工程有限公司 | A kind of double cell group automatic switchover power supply system |
-
2018
- 2018-09-20 CN CN201811096933.XA patent/CN108879892B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1983761A (en) * | 2006-05-29 | 2007-06-20 | 华为技术有限公司 | Controller for switching main power supply |
| CN202363960U (en) * | 2011-08-18 | 2012-08-01 | 上海韦尔半导体股份有限公司 | Double-battery power supply device |
| WO2013078668A1 (en) * | 2011-12-02 | 2013-06-06 | 拓实电子（深圳）有限公司 | Solar dual-supply circuit |
| CN103219552A (en) * | 2012-01-18 | 2013-07-24 | 天津市泰威科技发展有限公司 | Device for detection maintenance and balanced maintenance of power battery pack |
| CN102593946A (en) * | 2012-02-21 | 2012-07-18 | 德讯科技股份有限公司 | Dual-power-supply automatic switching circuit based on power MOSFET application |
| CN203522260U (en) * | 2013-10-11 | 2014-04-02 | Tcl通力电子（惠州）有限公司 | Cell power-supplying control circuit and a double-power-supply power supplying device |
| CN103522916A (en) * | 2013-10-31 | 2014-01-22 | 济南宏昌车辆有限公司 | Double power sources switching control system of electric car |
| CN103545914A (en) * | 2013-10-31 | 2014-01-29 | 中国兵器工业集团第二一四研究所苏州研发中心 | Dual-path electricity supply circuit with automatic switching function |
| CN104022563A (en) * | 2014-06-19 | 2014-09-03 | 天津金米特电子有限公司 | Dual-battery-pack switching circuit used for electric vehicles |
| WO2017117913A1 (en) * | 2016-01-04 | 2017-07-13 | 中兴通讯股份有限公司 | Charging and discharging method and apparatus for battery group |
| WO2018028316A1 (en) * | 2016-08-11 | 2018-02-15 | 中兴通讯股份有限公司 | Terminal charging control method, device and terminal |
| CN106685063A (en) * | 2016-11-22 | 2017-05-17 | 上海云衡科技有限公司 | Power switching circuit |
| CN106787129A (en) * | 2016-12-15 | 2017-05-31 | 山东金洲科瑞节能科技有限公司 | A kind of power-supply management system for being automatically obtained main power supply switching |
| CN108092402A (en) * | 2017-12-26 | 2018-05-29 | 宁波水表股份有限公司 | A kind of more power supply automatic switchover circuits |
| CN207652129U (en) * | 2017-12-26 | 2018-07-24 | 宁波水表股份有限公司 | A kind of more power supply automatic switchover circuits |
| CN107947330A (en) * | 2017-12-28 | 2018-04-20 | 杭州创乐电子科技有限公司 | Multigroup battery powered automatic switching control equipment and control method |
| CN207765577U (en) * | 2017-12-29 | 2018-08-24 | 深圳市艾特智能科技有限公司 | Battery capacity manages circuit |
| CN208738893U (en) * | 2018-09-20 | 2019-04-12 | 山东思科赛德矿业安全工程有限公司 | A kind of double cell group automatic switchover power supply system |
Non-Patent Citations (1)
| Title |
|---|
| 基于MSP430F168的双电池供电设计;邱细亚;王仁波;满在刚;张振;李德峰;;电子元器件应用;20110815(第08期);第24-27页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108879892A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108879892B (en) | Automatic switching power supply system for double battery packs | |
| CN108808780B (en) | Lithium battery pack battery management system for solar panel | |
| CN202190065U (en) | Battery protective circuit | |
| CN103036284B (en) | A kind of aviation onboard recorder independent current source | |
| CN103904762A (en) | Vehicle-mounted lead-acid storage battery intelligent charger | |
| CN206362841U (en) | Long-life intelligent electric energy meter based on super capacitor and button-shaped lithium-manganese cell | |
| CN204359916U (en) | Succinct charging and discharging lithium battery pick-up unit | |
| CN201726170U (en) | Power supply with wakeup function | |
| CN109017425A (en) | New energy electric motor vehicle charging control circuit | |
| CN213846308U (en) | Wake-up circuit and energy storage system | |
| WO2022134359A1 (en) | Novel power supply circuit for electric energy meter, and electric energy meter | |
| CN104880604A (en) | Electric energy meter supply circuit and electric energy meter employing same | |
| CN201975855U (en) | Ammeter and power supply management circuit thereof | |
| CN102868196B (en) | A kind of battery management balance system | |
| CN208738893U (en) | A kind of double cell group automatic switchover power supply system | |
| CN207398829U (en) | A kind of intelligent power system based on DSP | |
| CN207994712U (en) | A kind of wireless sensor low-light volt charge control and data collector | |
| CN211377694U (en) | Clock power supply device | |
| CN113572225A (en) | Battery pack management circuit and battery pack | |
| CN207117277U (en) | A kind of power-supply system of the communicator based on solar energy power taking | |
| CN111431262A (en) | Solar supplementary power supply system based on primary battery and composite capacitor | |
| CN107968404B (en) | Power management system and method for overhead line data acquisition terminal | |
| CN103779839A (en) | Automatic opening type starting circuit powered up by rechargeable battery | |
| CN205450961U (en) | Notebook computer reserve portable power source battery package supervisory circuits | |
| CN205864052U (en) | A kind of ups power device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A dual battery pack automatic switching power supply system Granted publication date: 20240419 Pledgee: Bank of Qingdao Co.,Ltd. Tai'an Branch Pledgor: SHANDONG SUCCEED MINING SAFETY ENGINEERING Co.,Ltd. Registration number: Y2024980040721 |