CN112564215B - Mobile power supply control circuit - Google Patents
Mobile power supply control circuit Download PDFInfo
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- CN112564215B CN112564215B CN202011382585.XA CN202011382585A CN112564215B CN 112564215 B CN112564215 B CN 112564215B CN 202011382585 A CN202011382585 A CN 202011382585A CN 112564215 B CN112564215 B CN 112564215B
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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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- 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
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a mobile power supply control circuit, which comprises a plurality of external connection sockets, wherein an external battery pack is connected with a built-in battery pack in parallel through pins of the external connection sockets: a detection point of the external battery pack is connected with a detection end of the measurement and control MCU through a pin of the external socket, and the detection point is the positive and negative electrode positions of each battery; heavy current charging circuit: the quick charging device is connected with a quick charging source, and charges a battery after converting input electricity; low current charging circuit: the slow charging power supply is connected with the battery, and the battery is charged after the input power is converted; and (3) measuring and controlling the MCU: detecting the voltage of a detection point of each battery; switching a large-current charging circuit to a battery installation component with low electric quantity, and switching a small-current charging circuit to a battery installation component with high electric quantity; a plurality of electronic switches: and the circuit connection is switched on or off under the control of the measurement and control MCU. This scheme passes through external socket and connects external group battery, and each battery of intelligent analysis for the power supply of battery is more high-efficient, can effectively prolong the life of battery.
Description
Technical Field
The invention relates to the technical field of power supply control circuits, in particular to a mobile power supply control circuit.
Background
The portable power source is a portable charger which can store electric energy, mainly charges consumer electronic products such as handheld mobile equipment and the like, is particularly applied to occasions without external power supply, and comprises a battery used for storing the electric energy inside. In order to increase the battery capacity of the mobile power source, some existing mobile power sources include a plurality of battery packs inside, and each battery pack includes a plurality of batteries. The voltage detection to the parallel end of the battery pack is often used for judging the electric quantity state of the whole battery in the mobile power supply, each battery is not separately detected, specific battery cannot be monitored, and damaged batteries cannot be subjected to hot replacement. And such batteries generally charge all battery packs together when the mobile power supply is charged, and discharge all battery packs together when the mobile power supply is discharged for use, and a single or single battery pack is not distinguished. Due to long-time charging and discharging use and accidents, states of different battery packs are different, the situations that part of the battery packs have more electric quantity and less electric quantity can occur, and each battery pack cannot be charged and discharged to the maximum efficiency indiscriminately are treated. Meanwhile, the partially damaged battery has the problems of abnormal output voltage, heat generation and the like, so that the normal use of the mobile power supply is influenced, and even safety accidents can be caused.
Disclosure of Invention
Therefore, it is necessary to provide a mobile power supply control circuit for solving the problem that the charging and discharging of the conventional mobile power supply are inefficient.
The invention provides a mobile power supply control circuit, which comprises a built-in battery pack and also comprises:
a plurality of external connection sockets, an external battery pack is connected with the built-in battery pack in parallel through pins of the external connection sockets: a detection point of the external battery pack is connected with a detection end of the measurement and control MCU through a pin of the external socket, and the detection point is the positive and negative electrode positions of each battery;
heavy current charging circuit: the quick charging device is connected with a quick charging source, and charges a battery after converting input electricity;
small current charging circuit: the slow charging power supply is connected with the battery, and the battery is charged after the input power is converted;
and (3) measuring and controlling the MCU: detecting the voltage of a detection point of each battery; switching the high-current charging circuit to a battery installation component with low electric quantity, and switching the low-current charging circuit to a battery installation component with high electric quantity;
a plurality of electronic switches: and the circuit connection is switched on or off under the control of the measurement and control MCU.
Preferably, the measurement and control MCU switches the battery installation component with high electric quantity to a large load for power supply, and switches the battery installation component with low electric quantity to a small load for power supply.
Preferably, the electronic switch comprises a detection switch, a charging switch and a power supply gating switch;
the detection point is connected with the input end of the detection switch, the output end of the detection switch is connected with a detection end of the measurement and control MCU, and the controlled end of the detection switch is connected with a control end of the measurement and control MCU;
the charging end of each built-in battery pack and the charging end of each external battery pack are connected with the output end of one charging switch, the input end of each charging switch is connected with the output end of the high-current charging circuit and the output end of the low-current charging circuit, and the controlled end of each charging switch is connected with one control end of the measurement and control MCU;
the output ends of the built-in battery pack and each external battery pack are connected with the input end of one power supply gating switch, and the two output ends of the power supply gating switch are respectively connected with the power supply ends of a large load and a small load one by one; the controlled end of each power supply gating switch is connected with one control end of the measurement and control MCU, each power supply gating switch comprises two analog electronic switches of which the input ends are connected together, one output end of each analog electronic switch is connected with the power supply end of the large load, and the other output end of each analog electronic switch is connected with the power supply end of the small load.
Preferably, the electronic switch is an analog electronic switch.
Preferably, the mobile power supply control circuit further comprises a main control MCU and a display screen module, wherein the output end of the measurement and control MCU is connected with the input end of the main control MCU, and the display output end of the main control MCU is connected with the input end of the display screen module; and when the measurement and control MCU detects that the voltage of the battery pack is abnormal, transmitting the abnormal battery code to the main control MCU, and displaying the abnormal battery code through the display screen.
Preferably, the high-current charging circuit comprises a high-current interface, a switching circuit and a rectifying circuit, the high-current interface is connected with the input end of the switching circuit, the output end of the switching circuit is connected with the input end of the rectifying circuit, the output end of the rectifying circuit is connected with the input end of the electronic switch, and the controlled end of the switching circuit is connected with a control end of the measurement and control MCU.
The high-current interface is a DC4017 interface, and the DC4017 interface is connected with 12-24V/8A input; the rectifying circuit comprises a Schottky diode, a capacitor and an inductor; the switching circuit comprises a switching tube and a resistor.
Preferably, the low-current charging circuit includes a low-current interface, a field effect transistor, a first inductor, a first diode, a first resistor, a second resistor, a first capacitor, a second capacitor, and a third capacitor; the small current interface is connected with the anode of the first diode through the first inductor, and the cathode of the first diode is connected with the input end of the electronic switch; the input end of the field effect transistor is connected with the anode of the first diode, the output end of the field effect transistor is grounded, the controlled end of the field effect transistor is connected with the control end of the measurement and control MCU through the second resistor, and the controlled end of the field effect transistor is grounded through the first resistor; the small current interface is grounded through the third capacitor, the cathode of the first diode is grounded through the first capacitor, and the second capacitor is connected with the first capacitor in parallel.
The low-current interface is a TYPE-C interface, and the TYPE-C interface is connected with 5-12V/3A input.
Preferably, a temperature sensor is arranged in each of the built-in battery pack and the external battery pack, the output end of the temperature sensor is connected with the temperature input end of the measurement and control MCU, and the temperature sensor is used for detecting the temperature of the batteries in the built-in battery pack and the external battery pack.
According to the technical scheme, the external connection sockets for connecting the external batteries are arranged, so that the quantity of the battery packs can be flexibly selected and set. The voltage condition of each battery is timely obtained by arranging detection points at two ends of each battery, the detection points are analyzed through a measurement and control MCU (micro control unit), the large-current charging circuit is switched to the battery installation assembly with low electric quantity by controlling a plurality of electronic switches, and the small-current charging circuit is switched to the battery installation assembly with high electric quantity. Through each battery and load of intelligent analysis for the power supply of battery is more high-efficient, can effectively prolong the life of battery.
Drawings
FIG. 1 is a schematic diagram of a mobile power supply control circuit according to an embodiment of the present invention;
fig. 2 is a schematic connection diagram of an external battery pack according to an embodiment of the mobile power supply control circuit of the invention;
FIG. 3 is a circuit diagram of a measurement and control MCU according to an embodiment of the mobile power supply control circuit of the invention;
FIG. 4 is a circuit diagram of a detection switch according to an embodiment of the control circuit of the portable power source of the present invention;
FIG. 5 is a schematic diagram of a connection mode between a measurement and control MCU and a detection switch in an embodiment of a mobile power supply control circuit of the invention;
fig. 6 is a circuit diagram of a large current charging circuit according to an embodiment of the mobile power supply control circuit of the invention;
fig. 7 is a circuit diagram of a low current charging circuit according to an embodiment of the mobile power supply control circuit of the invention;
fig. 8 is a schematic structural diagram of a charging switch and a power supply gating switch according to an embodiment of the mobile power supply control circuit of the invention.
In the drawings, the reference numbers indicate the following list of parts:
1. a measurement and control MCU; 2. a high-current charging circuit; 3. a low current charging circuit; 4. externally connecting a battery pack; 5. a charging switch; 6. a power supply gating switch; 8. a main control MCU; 9. a display screen module; 10. a detection switch; 11. a built-in battery pack; 12. an external socket; l2, a first inductor; d12, a first diode; r6 and a first resistor; r17 and a second resistor; c31, a first capacitor; c8, a second capacitor; c50 and a third capacitor.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is understood that the specific details described below are merely exemplary of some embodiments of the invention, and that the invention may be practiced in many other embodiments than as described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1, the present invention provides a mobile power supply control circuit, which includes a built-in battery pack 11, and further includes:
a plurality of external connection sockets 12, the external battery pack 4 is connected with the built-in battery 11 in parallel through pins of the external connection sockets 12: a detection point of the external battery pack 4 is connected with a detection end of the measurement and control MCU1 through a pin of the external socket 12, and the detection point is the position of the positive electrode and the negative electrode of each battery;
large-current charging circuit 2: the battery charging system is connected with a quick charging source, and charges the battery after converting input electricity;
small-current charging circuit 3: the slow charging power supply is connected with the battery, and the battery is charged after the input power is converted;
and (3) measurement and control MCU1: detecting the voltage of a detection point of each battery; switching the large-current charging circuit 2 to a battery installation component with low electric quantity, and switching the small-current charging circuit 3 to a battery installation component with high electric quantity; switching the battery installation assembly with high electric quantity to a large load for supplying power, and switching the battery installation assembly with low electric quantity to a small load for supplying power;
a plurality of electronic switches: and the circuit connection is switched on or off under the control of the measurement and control MCU 1.
The electronic switch comprises a detection switch 10, a charging switch 5 and a power supply gating switch 6;
referring to fig. 8, the detection point is connected to an input end of the detection switch 10, an output end of the detection switch 10 is connected to a detection end of the measurement and control MCU1, and a controlled end of the detection switch 10 is connected to a control end of the measurement and control MCU 1;
the charging ends of the built-in battery pack 11 and each external battery pack 4 are connected with the output end of a charging switch 5, the input end of each charging switch 5 is connected with the output end of the high-current charging circuit 2 and the output end of the low-current charging circuit 3, and the controlled end of the charging switch 5 is connected with one control end of the measurement and control MCU 1;
the output ends of the built-in battery pack 11 and each external battery pack 4 are connected with the input end of a power supply gating switch 6, and two output ends of the power supply gating switch 6 are respectively connected with power supply ends of a large load and a small load one by one; the controlled end of each power supply gating switch 6 is connected with one control end of the measurement and control MCU1, each power supply gating switch 6 comprises two analog electronic switches of which the input ends are connected together, the output end of one analog electronic switch is connected with the power supply end of a large load, and the output end of the other analog electronic switch is connected with the power supply end of a small load.
Referring to fig. 2, 3 and 4, the built-in battery pack 11 and each of the external battery packs 4 include three batteries connected in series with each other; the detection points are the anode and cathode positions of each battery.
The state of each battery in each group of batteries connected in parallel can be detected, then the condition of the battery group connected in parallel is judged according to the detected battery state, if only one signal in the three batteries is found to be normal, the whole group is considered to exist, and the other two batteries are judged to have faults, if two signals are found to be normal, the whole group is considered to exist and one battery has fault, and the group of battery group is considered to not exist only if the three batteries do not have signals.
The internal battery pack 11 and each external battery pack 4 comprise an internal battery mounting assembly and an external battery mounting assembly. The product can be externally connected with a lithium battery pack when needed, the external battery pack is very flexible, only the same voltage (3.7VX 3) is needed, and the external battery pack can be connected with 1 group or a plurality of groups in parallel, at most nine groups can be connected in parallel,
specifically, the power supply control circuit further comprises a main control MCU8 and a display screen module 9, wherein the output end of the measurement and control MCU1 is connected with the input end of the main control MCU8, and the display output end of the main control MCU8 is connected with the input end of the display screen module 9; when the measurement and control MCU1 detects that the voltage of the battery pack is abnormal, the abnormal battery codes are transmitted to the main control MCU8, and the abnormal battery codes are displayed through the display screen.
It will be appreciated that the present embodiment provides for monitoring of each battery, including the in-product battery pack and the external parallel battery pack (up to nine 11.1V packs). During charging or discharging, the rising curve or the falling curve of the voltage of each battery is detected, and the current state of the battery is judged according to the obtained curve and the charging or discharging current value. When a certain section is detected to be abnormal, a signal is transmitted to the main control MCU8, the main control MCU8 displays a corresponding code on the display screen module 9, a user can directly find a corresponding battery to directly perform hot replacement, and the normal work of a product cannot be influenced.
Specifically, a temperature sensor is arranged in each of the built-in battery pack 11 and each of the external battery packs 4, an output end of the temperature sensor is connected with a temperature input end of the measurement and control MCU1, and the temperature sensor is used for detecting the temperature of the batteries in the built-in battery pack 11 and each of the external battery packs 4. It can be understood that, carry out real-time control to the temperature of group battery through temperature sensor, when a certain group battery took place overheated condition, in time detect through observing and controling MCU1, the user can in time follow and trade, can effectually avoid the safety problem of overheated leading to.
Referring to fig. 6, the high-current charging circuit 2 includes a high-current interface, a switching circuit and a rectifying circuit, the high-current interface is connected to an input end of the switching circuit, an output end of the switching circuit is connected to an input end of the rectifying circuit, an output end of the rectifying circuit is connected to an input end of the electronic switch, and a controlled end of the switching circuit is connected to a control end of the measurement and control MCU 1. Wherein, the large current interface is a DC4017 interface, and the DC4017 interface is connected with the 12-24V/8A input; the rectifying circuit comprises a Schottky diode, a capacitor and an inductor; the switch circuit comprises a switch tube and a resistor.
Referring to fig. 7, the small current charging circuit 3 includes a small current interface, a field effect transistor, a first inductor L2, a first diode D12, a first resistor R6, a second resistor R17, a first capacitor C31, a second capacitor C8, and a third capacitor C50; the small current interface is connected with the anode of a first diode D12 through a first inductor L2, and the cathode of the first diode D12 is connected with the input end of the electronic switch 4; the input end of the field effect tube is connected with the positive electrode of the first diode D12, the output end of the field effect tube is grounded, the controlled end of the field effect tube is connected with the control end of the measurement and control MCU1 through a second resistor R17, and the controlled end of the field effect tube is grounded through a first resistor R6; the small current interface is grounded through a third capacitor C50, the cathode of the first diode D12 is grounded through a first capacitor C31, and the second capacitor C8 is connected in parallel with the first capacitor C31. The low-current interface is a TYPE-C interface, and the TYPE-C interface is connected with 5-12V/3A input. When the device is used, the measurement and control MCU1 controls the switch of the low-current charging circuit 3 through the control field effect tube.
In this embodiment, the detection switch is an analog detection switch with the model of CD4016, and the field-effect transistor has the advantages of fast on-off, low noise, low power consumption, large dynamic range, easy integration, no secondary breakdown phenomenon, wide safe working area and the like. In this embodiment, the measurement and control MCU1 uses a single chip microcomputer chip with a model number sh79f166ap and a peripheral circuit thereof, and the measurement and control MCU1 includes eight detection terminals and five control terminals. The detection point is connected with the input end of the detection switch, the output end of the detection switch is connected with the detection end of the measurement and control MCU1, and the controlled end of the detection switch is connected with the control end of the measurement and control MCU 1. The electronic switches used by the charging switch 5 and the power supply gating switch 6 are analog electronic switches of model TPCA 8059.
It can be understood that, referring to fig. 5, when the number of the detection points is greater than the number of the detection ends of the measurement and control MCU1, one input end of the measurement and control MCU1 is connected to the output ends of at least two different electronic switches. Only eight A/D sampling ports are provided, and when the total battery state is 40 paths (20 paths of each internal battery pack and the external battery pack) and sampling is needed, the analog electronic switch CD4016 is controlled by the single chip microcomputer to switch, and the battery state is divided into five groups, and each group has 8 paths for carrying out sampling respectively. During collection, two signals are sent into the same port, time-sharing collection is carried out through switching of a CD4016 analog electronic switch, and switching is carried out once every 1 uS.
According to the technical scheme, the batteries with lower energy are charged firstly, and when the energy of the two groups of batteries is approximately the same, the built-in battery pack is charged firstly. After the energy of the battery of the ordinary mobile power supply is used up, the battery can be fully charged for a long time, the intelligent quick-charging technology is used for the product, the current state of each battery is monitored in real time, the charging state is automatically adjusted to improve the charging efficiency, the balance is automatically adjusted among each battery, the difference among each battery is ensured to be reduced as much as possible, the performance of the whole battery set is effectively optimized, the charging time is shortened, and meanwhile the service life of the battery can be effectively prolonged.
The product respectively controls the discharge of the original battery pack and the external parallel battery pack, when the energy of the internal battery pack is insufficient and the energy of the external battery pack is sufficient, most of the load can be transferred to the external battery pack, and if the energy of the internal battery pack is seriously insufficient, all the load can be transferred to the external battery pack; similarly, when the energy of the external battery pack is insufficient and the energy of the internal battery pack is sufficient, most of the load is transferred to the external battery pack, and if the energy of the external battery pack is seriously insufficient, all the load is transferred to the internal battery pack; when the two groups of batteries have approximately the same energy, the internal battery pack is preferentially protected. Meanwhile, in the discharging process, intelligent judgment is carried out according to the voltage reduction curve of each battery and the current discharging current, differences are found, equalization is carried out through an equalization technology, the battery which cannot be saved is equalized, then the battery condition is judged, if the battery is found to be in a problem, information is transmitted to the main control MCU8 through internal RS232 communication, the main control MCU8 can directly display corresponding codes on an LCD screen, and a user can find the corresponding battery according to the codes and replace the battery with heat.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, substitutions and alterations can be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present patent shall be subject to the claims.
Claims (10)
1. A portable power source control circuit, includes built-in group battery, its characterized in that still includes:
a plurality of external connection sockets, an external battery pack is connected with the built-in battery pack in parallel through pins of the external connection sockets: a detection point of the external battery pack is connected with a detection end of the measurement and control MCU through a pin of the external socket, and the detection point is the position of the positive electrode and the negative electrode of each battery;
heavy current charging circuit: the battery charging system is connected with a quick charging source, and charges the battery after converting input electricity;
low current charging circuit: the slow charging power supply is connected with the battery, and the battery is charged after the input power is converted;
and (3) measuring and controlling the MCU: detecting the voltage of each detection point; switching the high-current charging circuit to a battery installation component with low electric quantity, and switching the low-current charging circuit to a battery installation component with high electric quantity;
a plurality of electronic switches: and the circuit connection is switched on or off under the control of the measurement and control MCU.
2. The mobile power supply control circuit according to claim 1, wherein the measurement and control MCU further switches the battery mounting assembly with high electric power to a large load for power supply, and switches the battery mounting assembly with low electric power to a small load for power supply.
3. The mobile power supply control circuit according to claim 1, wherein the electronic switch includes a detection switch, a charging switch, and a power supply gating switch;
the detection point is connected with the input end of the detection switch, the output end of the detection switch is connected with a detection end of the measurement and control MCU, and the controlled end of the detection switch is connected with a control end of the measurement and control MCU;
the charging ends of the built-in battery pack and each external battery pack are connected with the output end of one charging switch, the input end of each charging switch is connected with the output end of the high-current charging circuit and the output end of the low-current charging circuit, and the controlled end of each charging switch is connected with one control end of the measurement and control MCU;
the output ends of the built-in battery pack and each external battery pack are connected with the input end of one power supply gating switch, and the two output ends of the power supply gating switch are respectively connected with the power supply ends of a large load and a small load one by one; the controlled end of each power supply gating switch is connected with one control end of the measurement and control MCU, each power supply gating switch comprises two analog electronic switches of which the input ends are connected together, one of the analog electronic switches has an output end connected with the power end of a large load, and the other analog electronic switch has an output end connected with the power end of a small load.
4. The mobile power supply control circuit of claim 3, wherein the electronic switch is an analog electronic switch.
5. The mobile power supply control circuit according to claim 1, further comprising a main control MCU and a display screen module, wherein an output end of the measurement and control MCU is connected with an input end of the main control MCU, and a display output end of the main control MCU is connected with an input end of the display screen module; and when the measurement and control MCU detects that the voltage of the battery pack is abnormal, transmitting the abnormal battery code to the main control MCU, and displaying the abnormal battery code through the display screen.
6. The mobile power supply control circuit according to claim 1, wherein the high-current charging circuit comprises a high-current interface, a switching circuit and a rectifying circuit, the high-current interface is connected with an input end of the switching circuit, an output end of the switching circuit is connected with an input end of the rectifying circuit, an output end of the rectifying circuit is connected with an input end of the electronic switch, and a controlled end of the switching circuit is connected with a control end of the measurement and control MCU.
7. The mobile power supply control circuit of claim 6, wherein the high current interface is a DC4017 interface, and the DC4017 interface is connected to 12-24V/8A inputs; the rectifying circuit comprises a Schottky diode, a capacitor and an inductor; the switching circuit comprises a switching tube and a resistor.
8. The mobile power supply control circuit according to claim 1, wherein the small current charging circuit comprises a small current interface, a field effect transistor, a first inductor, a first diode, a first resistor, a second resistor, a first capacitor, a second capacitor, and a third capacitor; the small current interface is connected with the anode of the first diode through the first inductor, and the cathode of the first diode is connected with the input end of the electronic switch; the input end of the field effect tube is connected with the anode of the first diode, the output end of the field effect tube is grounded, the controlled end of the field effect tube is connected with the control end of the measurement and control MCU through the second resistor, and the controlled end of the field effect tube is grounded through the first resistor; the low-current interface is grounded through the third capacitor, the cathode of the first diode is grounded through the first capacitor, and the second capacitor is connected with the first capacitor in parallel.
9. The mobile power supply control circuit of claim 8, wherein the low current interface is a TYPE-C interface, and the TYPE-C interface is connected to a 5-12V/3A input.
10. The mobile power supply control circuit according to claim 1, wherein a temperature sensor is disposed in each of the internal battery pack and the external battery pack, an output end of the temperature sensor is connected to a temperature input end of the measurement and control MCU, and the temperature sensor is configured to detect a temperature of a battery in each of the internal battery pack and the external battery pack.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003111295A (en) * | 2001-09-27 | 2003-04-11 | Nec Tokin Tochigi Ltd | Charger using battery pack function |
| CN1655416A (en) * | 2004-02-10 | 2005-08-17 | 深圳市鑫汇科电子有限公司 | Method for protecting series lithium cells and circuit thereof |
| CN201590671U (en) * | 2010-01-09 | 2010-09-22 | 黄宇嵩 | Constant current charging apparatus special for model airplane battery external field |
| CN204407961U (en) * | 2015-01-28 | 2015-06-17 | 深圳市良益实业有限公司 | Battery pack distribution multi-mode equalization charging circuit |
| CN111431223A (en) * | 2020-03-17 | 2020-07-17 | 苏州科纽普新能源科技有限公司 | Quick-charging battery system for large-load AGV |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8288999B2 (en) * | 2006-08-01 | 2012-10-16 | Aeneas Energy Technology Co., Ltd. | Charging circuit for balance charging serially connected batteries |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003111295A (en) * | 2001-09-27 | 2003-04-11 | Nec Tokin Tochigi Ltd | Charger using battery pack function |
| CN1655416A (en) * | 2004-02-10 | 2005-08-17 | 深圳市鑫汇科电子有限公司 | Method for protecting series lithium cells and circuit thereof |
| CN201590671U (en) * | 2010-01-09 | 2010-09-22 | 黄宇嵩 | Constant current charging apparatus special for model airplane battery external field |
| CN204407961U (en) * | 2015-01-28 | 2015-06-17 | 深圳市良益实业有限公司 | Battery pack distribution multi-mode equalization charging circuit |
| CN111431223A (en) * | 2020-03-17 | 2020-07-17 | 苏州科纽普新能源科技有限公司 | Quick-charging battery system for large-load AGV |
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| CN112564215A (en) | 2021-03-26 |
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