CN117879110A - Adaptive multi-channel power control system based on lithium battery - Google Patents
Adaptive multi-channel power control system based on lithium battery Download PDFInfo
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- CN117879110A CN117879110A CN202410053528.9A CN202410053528A CN117879110A CN 117879110 A CN117879110 A CN 117879110A CN 202410053528 A CN202410053528 A CN 202410053528A CN 117879110 A CN117879110 A CN 117879110A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
- H02J7/82—Control of state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
- H02J7/61—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overcharge
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
- H02J7/63—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overdischarge
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/865—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J7/90—Regulation of charging or discharging current or voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本申请提供了一种基于锂电池的自适应多路电源调控系统，系统包括：充电电路、电压检测控制电路、升压电路和电压输出电路；电压检测控制电路，用于检测锂电池的电量，并控制充电电路通过车辆电源为锂电池充电；电压检测控制电路，还用于控制电压输出电路，基于锂电池提供的电量输出两路低电压，还用于控制升压电路对锂电池的电压进行升压处理，并通过电压输出电路输出两路高电压。本申请通过充电电路和电压检测控制电路，实现锂电池的充电放电过程，为负载提供四路不同电压，以缓解现有技术中通过干电池供电带来的诸多问题。
The present application provides an adaptive multi-channel power supply control system based on lithium batteries, the system includes: a charging circuit, a voltage detection control circuit, a boost circuit and a voltage output circuit; the voltage detection control circuit is used to detect the power of the lithium battery and control the charging circuit to charge the lithium battery through the vehicle power supply; the voltage detection control circuit is also used to control the voltage output circuit to output two low voltages based on the power provided by the lithium battery, and is also used to control the boost circuit to boost the voltage of the lithium battery and output two high voltages through the voltage output circuit. The present application realizes the charging and discharging process of the lithium battery through the charging circuit and the voltage detection control circuit, and provides four different voltages for the load, so as to alleviate many problems caused by the power supply through dry batteries in the prior art.
Description
Technical Field
The application relates to the technical field of circuits, in particular to a self-adaptive multi-channel power supply regulation and control system based on a lithium battery.
Background
In the existing power supply system of the vehicle equipment, the power supply in the vehicle is required to have the functions of vehicle power input wide voltage DC18-36V, seamless automatic switching of two modes of lithium battery input, charging and discharging, protection and detection. The traditional design is two-way input, the vehicle power supply and the battery are separately powered, and four different voltages are output. The battery is a dry battery, and the battery can be replaced when no electricity exists. The vehicle is powered by the vehicle power supply preferentially, and is powered by the dry battery under the condition of insufficient voltage of the vehicle power supply, the dry battery is large in size and small in capacity, the power supply time is long, an external charger is needed, and the charging time is long.
Disclosure of Invention
The utility model aims at providing a self-adaptation multichannel power regulation and control system based on lithium cell, through charging circuit and voltage detection control circuit, realize the charge-discharge process of lithium cell, provide four ways different voltages for the load to alleviate a great deal of problem that brings through dry battery power supply among the prior art.
In a first aspect, the present application provides a lithium battery-based adaptive multi-channel power regulation and control system, the system comprising: the device comprises a charging circuit, a voltage detection control circuit, a boosting circuit and a voltage output circuit; the charging circuit is respectively connected with a vehicle power supply, a lithium battery and a voltage detection control circuit; the voltage detection control circuit is also respectively connected with the lithium battery, the booster circuit and the voltage output circuit; the boost circuit is also connected with the lithium battery and the voltage output circuit respectively; the voltage detection control circuit is used for detecting the electric quantity of the lithium battery and controlling the charging circuit to charge the lithium battery through a vehicle power supply; the voltage detection control circuit is also used for controlling the voltage output circuit to output two paths of low voltages based on the electric quantity provided by the lithium battery, and is also used for controlling the voltage boosting circuit to boost the voltage of the lithium battery and outputting two paths of high voltages through the voltage output circuit.
Further, the voltage detection control circuit includes: a lithium battery protection circuit; the lithium battery protection circuit is also used for protecting the lithium battery when the lithium battery is detected to be in an overcharged or overdischarged state.
Further, the lithium battery protection circuit comprises a protection chip and a plurality of MOS tubes.
Further, the voltage detection control circuit further includes: a charge control circuit and a discharge control circuit respectively connected with the lithium battery protection circuit; the charging control circuit is respectively connected with the charging circuit and the lithium battery and is used for controlling the charging circuit to charge the lithium battery when the electric quantity of the lithium battery is detected to be smaller than a preset threshold value; and the discharging control circuit is used for controlling the lithium battery to supply power to the load through the voltage boosting circuit and the voltage output circuit.
Further, the discharge control circuit includes: a relay and a designated capacitance; when the discharging control circuit detects that the voltage of the lithium battery is lower than a preset threshold value, the relay is controlled to be turned off, and the power supply of the vehicle power supply is detected again after the relay is turned off, so that the operation is recovered; the capacitor is designated as a fast charge and slow discharge device so as to ensure that the relay is opened quickly and closed slowly, and the relay is prevented from being closed due to voltage burrs.
Further, the discharge control circuit further includes: the schottky diode prevents the charge of a given capacitor from being discharged through the reverse leakage current of the diode.
Further, a filter circuit and an anti-reverse connection protection circuit are also connected between the vehicle power supply and the charging circuit; the filtering circuit comprises a power filter, a power isolator and a power voltage stabilizer and is used for removing noise and clutter in a vehicle power signal; the reverse connection preventing protection circuit is used for preventing reverse connection of the circuit.
Further, the Boost circuit includes a Boost booster; the Boost booster comprises an input filter capacitor, a switching tube, an output filter capacitor, an inductor and an output voltage feedback loop.
Further, the voltage output circuit is a circuit composed of an asynchronous Buck converter, a resistor and a capacitor.
Furthermore, all circuits in the system are functional modules, are combined in a fast plug-in mode, and are configured with an anti-misplug design.
The application provides a self-adaptation multichannel power regulation and control system based on lithium cell includes: the device comprises a charging circuit, a voltage detection control circuit, a boosting circuit and a voltage output circuit; the charging circuit is respectively connected with a vehicle power supply, a lithium battery and a voltage detection control circuit; the voltage detection control circuit is also respectively connected with the lithium battery, the booster circuit and the voltage output circuit; the boost circuit is also connected with the lithium battery and the voltage output circuit respectively; the voltage detection control circuit is used for detecting the electric quantity of the lithium battery and controlling the charging circuit to charge the lithium battery through a vehicle power supply; the voltage detection control circuit is also used for controlling the voltage output circuit to output two paths of low voltages based on the electric quantity provided by the lithium battery, and is also used for controlling the voltage boosting circuit to boost the voltage of the lithium battery and outputting two paths of high voltages through the voltage output circuit. According to the scheme, the charging circuit and the voltage detection control circuit are used for realizing the charging and discharging process of the lithium battery and providing four paths of different voltages for the load, so that the defects caused by power supply through the dry battery in the prior art are overcome.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a self-adaptive multi-channel power supply regulation system based on a lithium battery according to an embodiment of the present application;
fig. 2 is a circuit diagram of a charging circuit according to an embodiment of the present disclosure;
fig. 3 is a specific block diagram of a voltage detection control circuit according to an embodiment of the present application;
fig. 4 is a circuit diagram of a lithium battery protection circuit according to an embodiment of the present application;
fig. 5 is a circuit diagram of a charge control circuit according to an embodiment of the present disclosure;
fig. 6 is a circuit diagram of a discharge control circuit according to an embodiment of the present disclosure;
fig. 7 is a circuit diagram of a boost circuit according to an embodiment of the present application;
fig. 8 is a circuit diagram of a voltage output circuit according to an embodiment of the present disclosure;
fig. 9 is a block diagram of another adaptive multi-channel power supply regulation system based on a lithium battery according to an embodiment of the present application;
fig. 10 is a circuit diagram of a filter circuit according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the existing power supply system of the vehicle equipment, a vehicle power supply and a battery are separately powered, and four paths of different voltages are output. The battery is a dry battery, and because the dry battery has large volume, small capacity and long power supply time, an external charger is also needed, the charging time is long, and a plurality of inconveniences are brought to the power supply of vehicle equipment.
Based on this, the embodiment of the application provides a self-adaptation multichannel power regulation and control system based on lithium cell, through charging circuit and voltage detection control circuit, realizes the charge-discharge process of lithium cell, provides four ways different voltages for the load to alleviate a great deal of problem that brings through dry battery power supply among the prior art.
Fig. 1 is a block diagram of a self-adaptive multi-path power supply regulation system based on a lithium battery according to an embodiment of the present application, where the system includes: a charging circuit 11, a voltage detection control circuit 12, a boosting circuit 13, and a voltage output circuit 14; wherein the charging circuit 11 is respectively connected with a vehicle power supply, a lithium battery 15 and a voltage detection control circuit 12; the voltage detection control circuit 12 is also respectively connected with a lithium battery 15, a boost circuit 13 and a voltage output circuit 14; the booster circuit 13 is also connected to a lithium battery 15 and a voltage output circuit 14, respectively.
The voltage detection control circuit 12 is configured to detect an electric quantity of the lithium battery 15, and control the charging circuit 11 to charge the lithium battery 15 through a vehicle power supply; the voltage detection control circuit 12 is further configured to control the voltage output circuit 14 to output two low voltages based on the electric quantity provided by the lithium battery 15, and is further configured to control the voltage boost circuit 13 to boost the voltage of the lithium battery 15, and to output two high voltages through the voltage output circuit 14.
According to the self-adaptive multi-path power supply regulation and control system based on the lithium battery, a similar range-extending mode is adopted, the lithium battery is used for supplying power, the lithium battery is used for replacing a dry battery, a charging circuit, a voltage detection control circuit, a voltage boosting circuit and a voltage output circuit are built in, and the function of supplying power to external equipment loads is achieved through the control process of charging and discharging the lithium battery.
The following sequentially describes each part of the circuit in detail:
referring to the circuit diagram of the charging circuit shown in fig. 2, in this embodiment, MAX1745aub+ chip is used to enable H to be active, and L turns off the output voltage and maximum current: 16.75V/1A: when the output is stable at 16.75V, the maximum output is 1A, the load is high again, and after the current exceeds 1A, the output is reduced to reduce the current to 1A. The voltage change does not affect the current limit, which is only related to the current limiting resistor R23. Charging current: the higher the battery voltage, the smaller the charge current, and the voltage is about 0.39A at 14.9V, which is related only to the voltage difference and the series resistance.
As shown in fig. 3 for a specific structure of the voltage detection control circuit 12, the voltage detection control circuit 12 includes: a lithium battery protection circuit 121, and a charge control circuit 122 and a discharge control circuit 123 connected to the lithium battery protection circuit 121, respectively.
The lithium battery protection circuit 121 is configured to protect the lithium battery when detecting that the lithium battery is in an overcharged or overdischarged state; the charging control circuit 122 is respectively connected with the charging circuit 11 and the lithium battery 15, and is used for controlling the charging circuit 11 to charge the lithium battery 15 when detecting that the electric quantity of the lithium battery is smaller than a preset threshold value; the discharge control circuit 123 is used for controlling the lithium battery 15 to supply power to the load through the voltage boosting circuit 13 and the voltage output circuit 14.
Referring to a circuit diagram of the lithium battery protection circuit 121 shown in fig. 4, the lithium battery protection circuit 121 includes a protection chip and a plurality of MOS transistors. The control chip of the lithium battery protection circuit 121 adopts an SGM41002, and the SGM41002 is designed for secondary protection of the lithium ion battery. The product integrates a high-precision voltage detection circuit and a delay circuit which are required by the safe operation of the lithium ion battery. The working principle of the lithium battery protection circuit is as follows:
when the vehicle power supply charges the battery, a voltage detection circuit in the protection chip can detect the voltage of the battery in real time, and once the voltage exceeds the set maximum charging voltage, the protection chip can stop the current from continuously charging the battery by controlling the MOS tube to be closed so as to prevent the battery from being overcharged. Similarly, during discharging, if the battery voltage is reduced below the set minimum discharging voltage, the protection chip can prevent current from flowing out of the battery by controlling the MOS tube to be disconnected so as to prevent the battery from being over discharged. In addition, the protection chip can also monitor the temperature and the current of the battery, and cut off the circuit by controlling the MOS tube when the temperature or the current is abnormal, so as to protect the battery from being damaged.
See the circuit diagram of the charge control circuit 122 shown in fig. 5:
1. the voltage rises above 14.8V, so that the detection pin exceeds 400mV, the OUT output high resistance is pulled up by R16, the MOS tube is conducted, the light isolation is conducted, and EN_MAX1745 is pulled down and is not charged.
2. The voltage is reduced below 13V, so that the detection pin is lower than 400mV, the OUT output is low, the MOS tube is not on, the light barrier is not on, and EN_MAX1745 is pulled high for charging.
3. Charging control limit calculation:
r13 current+r15 current=r14 current:
let the battery voltage be VBAT, the detection voltage vina=0.4v, and let the D9 drop be 0.2V
——(VBAT-0.4)/182K+(VBAT-0.2-0.4)/(1M+100K)＝0.4/4.99K
——(1/182+1/1100)*VBAT-0.4/182-0.6/1100＝0.4/4.99
——0.006403*VBAT＝0.08290
VBAT＝12.95V；
If the lower limit is to be lowered, R15 needs to be reduced.
Referring to a circuit diagram of the discharge control circuit 123 shown in fig. 6, the discharge control circuit 123 includes: a relay and a designated capacitance; when a vehicle power supply exists or the relay outputs, the detection control of the relay is carried out, for example, when the voltage of the lithium battery is detected to be lower than a preset threshold value, the relay is directly judged, and after the relay is turned off, the power supply of the vehicle power supply is re-detected, and then the work is restored; the capacitor is designated as a fast charge and slow discharge device so as to ensure that the relay is opened quickly and closed slowly, and the relay is prevented from being closed due to voltage burrs. The discharge control circuit 123 further includes: the schottky diode prevents the charge of a given capacitor from being discharged through the reverse leakage current of the diode.
In the discharge control circuit 123, the lithium battery voltage is lower than 11v, the mos transistor is turned off, and the battery output is turned off. In order to solve the problem that the power is cut off due to voltage drop when the power is turned on, the power-off threshold of the detection voltage needs to be adjusted to be very low to prevent the belt from being motionless. A time delay power-off can be configured, and if the voltage is recovered in time, the power-off can be continued.
In the embodiment of the application, the relay K3 only carries out detection control of the relay when a vehicle power supply exists or the relay outputs, and the relay is directly turned off if the condition is not met, and the relay can be recovered only after the vehicle power supply is powered again after the relay is turned off. The C73 capacitor is a fast charge and slow discharge device, is fast when the relay is opened, is slow when the relay is closed, and can prevent the relay from being closed due to voltage burrs.
In order to prevent the current of the capacitor from being discharged through the reverse leakage current of the diode, a schottky diode with relatively small reverse leakage current is adopted in the embodiment of the application.
See the circuit diagram of the booster circuit 13 shown in fig. 7; the DC9V voltage input by the lithium battery is raised to the DC40V voltage, and the circuit adopts a scheme of a control circuit and a MOSFET (metal oxide semiconductor field effect transistor) in a discrete way because the total output power of the power supply is larger (80W). In this embodiment, a TI-LM3478M Boost chip (i.e., boost) is used, which is a DC-DC Boost converter that can Boost the input voltage to the desired output voltage. The working principle is based on inductance energy storage and switching tube control, and the main components of the device comprise an input filter capacitor, a switching tube, an output filter capacitor, an inductor, an output voltage feedback loop and the like.
When an input voltage is added to the circuit, the input filter capacitor smoothes the input voltage and provides the voltage to the switching tube. When a control signal is input through the flip-flop, a switching tube (e.g., a MOSFET tube) is turned on, transmitting an input voltage into the inductor. When the switching tube is turned on, the inductor stores energy of the input voltage, because when the current in the inductor changes, the magnetic field of the inductor generates electric potential, so that the continuity of the current is maintained. When the switching tube is closed, the inductor in the circuit generates reverse potential, so that the voltage at two ends of the inductor rises, and the voltage is transferred to the output filter capacitor. The output voltage is detected by a feedback loop and compared with a set voltage, so that the switch of the switching tube is controlled to enable the output voltage to reach a required value.
Referring to the circuit diagram of the voltage output circuit 14 shown in fig. 8, the voltage output circuit 14 is a circuit composed of an asynchronous Buck converter, a resistor, and a capacitor. The SGM61450 is a current-mode controlled asynchronous Buck converter with an input range of 4.5V to 42V, continuously outputting current 5A. A low RDSON N-MOSFET is used as the high side switch. The static current is as low as 148 muA. At shutdown, the shutdown current was reduced to 2.75 μa (en=low). The internal under-voltage lockout (UVLO) threshold is 4.2V, which can be adjusted (increased) by an external resistive voltage divider. An internal soft start circuit controls the output voltage to start the ramp. The switching frequency can be chosen within a wide range (100 kHz to 2500 kHz) to allow for a desirable tradeoff between efficiency, component size, and conversion voltage ratio. Overvoltage transient protection is provided to limit startup or other transient overshoot. Safe operation under overload conditions is ensured by cyclic current limiting, frequency folding and thermal shutdown protection.
In another possible embodiment, a filter circuit 16 and a reverse connection preventing protection circuit 17 are also connected between the vehicle power supply and the charging circuit 11, as shown in fig. 9; the filter circuit 16 includes a power filter, a power isolator, and a power regulator for removing noise and clutter in the vehicle power signal; and a reverse connection preventing protection circuit 17 for preventing reverse connection of the circuit. The reverse connection preventing protection circuit 17 is usually simply implemented by a diode, and in the embodiment of the application, an MOS transistor is used for protection, so that self power consumption is smaller.
Referring to the circuit diagram of the filter circuit 16 shown in fig. 10, the main function of the power filter circuit is to remove noise and noise in the power signal, so as to ensure that the electronic devices in the circuit can work normally. Noise and noise in the power supply signal typically comes from the power supply itself, the power supply line, the switching power supply, and so on. These noise and clutter can interfere with the proper operation of the electronic device, reducing its operational stability and reliability.
The filter circuit 16 is generally composed of three parts: a power filter, a power isolator and a power voltage stabilizer. The power filter mainly comprises a capacitor and an inductor and is used for filtering high-frequency noise and clutter. The capacitor filters out high frequency noise, while the inductor filters out low frequency noise. The power isolator is used for isolating interference between the power supply and the load so as to avoid mutual interference caused by common ground. The power supply voltage stabilizer is used for stabilizing the power supply voltage within a certain range so as to ensure the stable work of the load.
In the design filter circuit, transient overvoltage which is interfered in input voltage is absorbed by RV1 piezoresistor and D1 diode, differential mode interference is filtered by L1, and common mode interference is filtered by T1; the D18 and 19 diodes are used for preventing the voltage and the current of the rear-stage circuit from flowing backwards.
Furthermore, all circuits in the system are functional modules, are combined in a fast plug-in mode, and are configured with an anti-misplug design.
The self-adaptive multi-path power supply regulation and control system based on the lithium battery provided by the embodiment of the application has the following advantages:
a) Low failure rate design: the passive device is used for replacing the active device as much as possible, the high-reliability component is adopted, and the scheme which is mature and reliable and is verified by application of many other projects is adopted.
b) And (3) modular design: and the maintainability of the whole power supply is improved by adopting a functional modularized design, a filtering component, a functional circuit module and the like.
c) Misplug prevention design: the power supply internal functional modules are connected in a quick plug-in mode and have an anti-misplug design, so that the time for replacing the functional modules is shortened.
d) Long endurance self-adaptive design: through the optimization of the lithium battery charging circuit, the design of a voltage detection control circuit (a lithium battery protection circuit, a charging control circuit and a discharging control circuit) is matched, and the power supply mode which can realize long endurance and can be self-adaptive to different output voltages is realized.
The adaptive multi-path power supply regulation and control system provided by the embodiment of the application can be applied to a power supply scene of a movable satellite positioning device; such devices require efficient, stable, and durable power management systems to ensure proper operation of the equipment, and multiple high power management to adapt to the power requirements of the functional modules within the device.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An adaptive multi-channel power regulation and control system based on lithium batteries, the system comprising: the device comprises a charging circuit, a voltage detection control circuit, a boosting circuit and a voltage output circuit; the charging circuit is respectively connected with a vehicle power supply, a lithium battery and a voltage detection control circuit; the voltage detection control circuit is also respectively connected with the lithium battery, the boost circuit and the voltage output circuit; the boost circuit is also respectively connected with the lithium battery and the voltage output circuit;
the voltage detection control circuit is used for detecting the electric quantity of the lithium battery and controlling the charging circuit to charge the lithium battery through the vehicle power supply;
the voltage detection control circuit is also used for controlling the voltage output circuit to output two paths of low voltages based on the electric quantity provided by the lithium battery, controlling the voltage boosting circuit to boost the voltage of the lithium battery, and outputting two paths of high voltages through the voltage output circuit.
2. The lithium battery-based adaptive multi-channel power regulation system of claim 1, wherein the voltage detection control circuit comprises: a lithium battery protection circuit;
the lithium battery protection circuit is also used for protecting the lithium battery when the lithium battery is detected to be in an overcharged or overdischarged state.
3. The lithium battery-based adaptive multi-channel power supply regulation and control system according to claim 2, wherein the lithium battery protection circuit comprises a protection chip and a plurality of MOS transistors.
4. The lithium battery-based adaptive multi-channel power regulation system of claim 2, wherein the voltage detection control circuit further comprises: a charge control circuit and a discharge control circuit respectively connected with the lithium battery protection circuit;
the charging control circuit is respectively connected with the charging circuit and the lithium battery and is used for controlling the charging circuit to charge the lithium battery when the electric quantity of the lithium battery is detected to be smaller than a preset threshold value;
and the discharge control circuit is used for controlling the lithium battery to supply power for a load through the boost circuit and the voltage output circuit.
5. The lithium battery-based adaptive multi-channel power regulation system of claim 4, wherein the discharge control circuit comprises: a relay and a designated capacitance; when the discharging control circuit detects that the voltage of the lithium battery is lower than a preset threshold value, the relay is controlled to be turned off, and the power supply of the vehicle power supply is detected again after the relay is turned off to resume operation; the appointed capacitor is a fast charge and slow discharge device so as to ensure that the relay is opened quickly and closed slowly, and the relay is prevented from being closed due to voltage burrs.
6. The lithium battery-based adaptive multi-channel power regulation system of claim 5, wherein the discharge control circuit further comprises: the schottky diode prevents the charge of a given capacitor from being discharged through the reverse leakage current of the diode.
7. The lithium battery-based adaptive multi-path power supply regulation system of claim 1, wherein a filter circuit and an anti-reverse connection protection circuit are further connected between the vehicle power supply and the charging circuit;
the filtering circuit comprises a power filter, a power isolator and a power voltage stabilizer and is used for removing noise and clutter in a vehicle power signal;
the reverse connection preventing protection circuit is used for preventing reverse connection of the circuit.
8. The lithium battery-based adaptive multi-channel power regulation system of claim 1, wherein the Boost circuit comprises a Boost booster; the Boost booster comprises an input filter capacitor, a switching tube, an output filter capacitor, an inductor and an output voltage feedback loop.
9. The lithium battery-based adaptive multi-channel power supply regulation and control system according to claim 1, wherein the voltage output circuit is a circuit formed by an asynchronous Buck converter, a resistor and a capacitor.
10. The lithium battery-based adaptive multi-channel power supply regulation system of any one of claims 1-9, wherein all circuits in the system are functional modules, are combined in a fast plug-in mode, and are configured with an anti-misplug design.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410053528.9A CN117879110A (en) | 2024-01-12 | 2024-01-12 | Adaptive multi-channel power control system based on lithium battery |
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| CN202410053528.9A CN117879110A (en) | 2024-01-12 | 2024-01-12 | Adaptive multi-channel power control system based on lithium battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120184882A (en) * | 2025-05-21 | 2025-06-20 | 厦门元顺微电子技术有限公司 | A frequency folding output current limiting protection circuit |
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2024
- 2024-01-12 CN CN202410053528.9A patent/CN117879110A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120184882A (en) * | 2025-05-21 | 2025-06-20 | 厦门元顺微电子技术有限公司 | A frequency folding output current limiting protection circuit |
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