CN102280916B - Power supply module compatible with plurality of batteries and GPS receiving equipment - Google Patents
Power supply module compatible with plurality of batteries and GPS receiving equipment Download PDFInfo
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Abstract
The invention relates a power supply module compatible with a plurality of batteries and GPS receiving equipment. The power supply module comprises a voltage reduction circuit, a boost circuit, a dynamic monitoring circuit and a dynamic management circuit. A power supply input terminal of the voltage reduction circuit is used for connection with a charging battery and an output terminal of the voltage reduction circuit is connected with one input terminal of the dynamic management circuit. A power supply input terminal of the boost circuit is used for connection with a dry battery and an output terminal of the boost circuit is connected with the other input terminal of the dynamic management circuit; and an output terminal of the dynamic management circuit is connected with a power supply input terminal of electrical equipment. The dynamic monitoring circuit collects output voltages of the voltage reduction circuit and inputs a monitoring signal into the dynamic management circuit to carry out gating switching between the voltage reduction circuit and the boost circuit. According to the above-mentioned arrangement, the boost circuit enables the voltage of the dry cell to be boosted to a standard voltage for power supply; moreover, the dynamic management circuit carries out the gating switching between the voltage reduction circuit and the boost circuit according to sampling of the dynamic monitoring circuit.
Description
Technical field
The present invention relates to a kind of power supply unit, be specifically related to a kind of power module and GPS receiving equipment of compatible plurality of batteries.
Background technology
Most relies on battery powered equipment can only use single power supply, such as dry cell or rechargeable battery, use the equipment of dry cell power supply, because the dry cell capacity is little and can't recharge use, cause easily a large amount of losses of dry cell, greatly increase the field work cost, and increased the weight of the pollution to environment.Although and the equipment that uses separately rechargeable battery has reduced operating cost, owing to can't be easily the rechargeable battery charging, seriously reduced efficient and the continuity of field work in the open air.
The system power supply nominal voltage of present most power consumption equipments all is 3.3V.Yet the voltage specification of alkaline dry battery is 1.5V, the voltage specification of rechargeable battery is generally ni-mh, Ni-Cd nickel-cadmium 1.2V, lithium iron phosphate charging battery 3.2V, Li-Ion rechargeable battery 3.7V, do not mate with the power supply nominal voltage of current power consumption equipment, must could be power devices through voltage conversion circuit.The battery input that the is lower than 3.3V use of must boosting is such as alkaline dry battery, nickel-hydrogen chargeable cell etc.The battery input that is higher than 3.3V must be used in step-down, such as Li-Ion rechargeable battery.If directly replace reluctantly the rechargeable battery of 3.7V with the dry cell of 1.5V, electricity shortage, the abnormal problem of equipment work can appear, directly replace the dry cell of 1.5V if use the rechargeable battery of 3.7V, the excessive problem of voltage then can occur, so rechargeable battery and dry cell can not be compatible on same power consumption equipment.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of power module of realizing the compatible plurality of batteries of the automatic detection of power supply input type and switching, and use the GPS receiving equipment of this power module.
Technical scheme of the present invention is as follows:
A kind of power module, it is characterized in that: it comprises reduction voltage circuit, booster circuit, dynamic monitoring circuit and dynamic management circuit, wherein the power input of reduction voltage circuit is used for connecting rechargeable battery, and the output of described reduction voltage circuit connects an input of described dynamic management circuit; The power input of booster circuit is used for connecting dry cell, and the output of described booster circuit connects another input of described dynamic management circuit, and the output of described dynamic management circuit is the output of described power module; Described dynamic monitoring circuit gathers the output voltage of described reduction voltage circuit, and described output voltage is treated to monitor signal inputs in the described dynamic management circuit, described dynamic management circuit switches according to the gating that described monitor signal carries out between reduction voltage circuit and the booster circuit.
The handoff procedure of described dynamic management circuit comprises:
A) when rechargeable battery shown in the power input of described reduction voltage circuit connects, described dynamic monitoring circuit monitoring is higher than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is high level signal; Described dynamic management circuit is according to the output of the described reduction voltage circuit of the described high level signal gating output as described power module;
B) when the power input of described booster circuit connects described dry cell, described dynamic monitoring circuit monitoring is lower than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is low level signal; Described dynamic management circuit is according to the output of the described booster circuit of the described low level signal gating output as described power module.
Input at described reduction voltage circuit arranges a charge management circuit, and the handoff procedure of described dynamic management circuit comprises:
1) when described charge management circuit connects described rechargeable battery and external power source, described charge management circuit ends described rechargeable battery output, and is described rechargeable battery charging when by this charge management circuit being described reduction voltage circuit power supply;
2) when described charge management circuit connects described rechargeable battery, described rechargeable battery is described charge management circuit power supply, described dynamic monitoring circuit monitoring is higher than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is high level signal; Described dynamic management circuit is according to the output of the described reduction voltage circuit of the described high level signal gating output as described power module;
3) are connected with external power source when not being connected when described charge management circuit and described rechargeable battery, described dynamic monitoring circuit monitoring is lower than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is low level signal; Described dynamic management circuit is according to the output of the described booster circuit of the described low level signal gating output as described power module;
4) when described charge management circuit connects described external power source, described external power source is described charge management circuit power supply, described dynamic monitoring circuit monitoring is higher than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is high level signal; Described dynamic management circuit is according to the output of the described reduction voltage circuit of the described high level signal gating output as described power module.
Described process 1) in, when described external power source disconnected, described charge management circuit started rechargeable battery powered and complete charge process.
Described process 4) in, when the power input of described charge management circuit connects described external power source, when the input of described booster circuit connects described dry cell simultaneously, the output of described dry cell cut-off, the output of described dry cell recovered after described external power source disconnected.
The model of described reduction voltage circuit is AAT1141, and the model of described booster circuit is AAT1217, and the model of described dynamic monitoring circuit is AAT3562, and the model of described dynamic management circuit is AAT4674.
The model of described charge management circuit is BQ24230.
It comprises that also one is used for the battery compartment of compatible dry cell or rechargeable battery, and described battery compartment all arranges batteries connector with spring on both corresponding to the inboard, two ends at described dry cell the two poles of the earth; Described battery compartment bottom is provided for connecting the press-down type SO-DIMM type internal storing strip connector of described rechargeable battery.
A kind of GPS receiving equipment that uses described power module, comprise GPS receiving equipment body and power module, it is characterized in that: described power module is arranged in the described GPS receiving equipment body, between the output of described power module and the described GPS receiving equipment power input linear voltage regulator is set.
Technique effect of the present invention is as follows:
Power module of the present invention comprises reduction voltage circuit, booster circuit, dynamic monitoring circuit and dynamic management circuit, and wherein the power input of reduction voltage circuit is used for connecting rechargeable battery, and the output of reduction voltage circuit connects an input of dynamic management circuit; The power input of booster circuit is used for connecting dry cell, and the output of booster circuit connects another input of dynamic management circuit, and the output of dynamic management circuit connects the power input of power consumption equipment; The dynamic monitoring circuit gathers the output voltage of reduction voltage circuit, and monitor signal is inputted the gating switching of carrying out in the dynamic management circuit between reduction voltage circuit and the booster circuit.The present invention is by above-mentioned setting, by booster circuit the voltage of dry cell is promoted to the power supply nominal voltage, by reduction voltage circuit with the voltage drop of rechargeable battery to the nominal voltage of powering, and the gating that is carried out between reduction voltage circuit and the booster circuit according to the sampling of dynamic monitoring circuit by the dynamic management circuit switches.Thereby realized the dry cell of different output voltages and the compatibility between the rechargeable battery, overcome the deficiency that the GPS receiver of single power supply power supply is worked in the open air, realized the power-supply management system of multiple types Power supply.
The present invention is owing to the input at reduction voltage circuit arranges a charge management circuit, the input of charge management circuit is used for connecting rechargeable battery and/or external power source, charge management circuit can cooperate the dynamic management circuit, action for different power supplys is selected charging, discharge or ended realizes automatic detection and switch operating to the power supply input type.When charge management circuit connects rechargeable battery and external power source, the output of charge management circuit cut-off rechargeable battery, and be the rechargeable battery charging by this charge management circuit when being the reduction voltage circuit power supply; When charge management circuit connected rechargeable battery, rechargeable battery was the charge management circuit power supply; Are connected with external power source with rechargeable battery when charge management circuit and are not connected, when dry cell was connected with booster circuit, the output of dynamic management circuit gating booster circuit was as the output of power module; When charge management circuit connected external power source, external power source was the charge management circuit power supply.Above-mentioned handoff procedure is so that outside dry cell and rechargeable battery, can use freely the external power sources such as USB, Che Chong, greatly lower dry cell loss and operating cost, and need not to worry the problem that the field can't cause work to interrupt for the rechargeable battery charging, efficient and the continuity of field work had both been guaranteed, greatly reduce again loss and the field work cost of dry cell, reduced simultaneously the pollution to environment.
For rechargeable battery and the dry cell that solves owing to standard there are differences at length dimension, the present invention arranges the batteries connector with spring on both of two distance variables in battery compartment, this connector can be used as the contact, the two poles of the earth of dry cell, rechargeable battery can be fixed in the battery compartment again, thereby changed the size of contents of battery compartment, satisfied the compatibility of different size rechargeable battery and dry cell.
Description of drawings
Fig. 1 is the structural representation of power-supply system in the power module of the present invention
Fig. 2 is the use view that battery compartment inserts dry cell in the power module of the present invention
Fig. 3 is the use view that battery compartment inserts rechargeable battery in the power module of the present invention
Fig. 4 is GPS receiving equipment circuit diagram of the present invention
Embodiment
The present invention will be described below in conjunction with accompanying drawing.
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Power module of the present invention comprises battery compartment and power-supply system, wherein battery compartment is used for holding rechargeable battery and dry cell, and connect the electrode of battery by connector, power-supply system is used for realizing the compatibility of rechargeable battery and dry cell, and the output of power-supply system connects the power input of GPS receiving equipment.
As shown in Figure 1, power-supply system comprises charge management circuit 1, reduction voltage circuit 2, booster circuit 3, dynamic monitoring circuit 4 and dynamic management circuit 5, the power input of charge management circuit 1 connects respectively the external power sources such as USB interface, output connects respectively the power input of rechargeable battery 6 and a power input of reduction voltage circuit 2, and the power output end of rechargeable battery 6 connects another power input of reduction voltage circuit 2; The output of reduction voltage circuit 2 connects an input of dynamic management circuit 5; The power output end of dry cell 7 connects the power input of booster circuit 3, the output of booster circuit 3 connects another input of dynamic management circuit 5, the output of dynamic management circuit 5 connects the power input of power consumption equipment, and the output of dynamic management circuit 5 is the output of whole power-supply system; Dynamic monitoring circuit 4 gathers the output voltage of reduction voltage circuit 2, and the gating that carries out between reduction voltage circuit 2 and the booster circuit 3 in the input of the monitor signal after will the processing dynamic management circuit 5 switches.
Charge management circuit 1 is used for by external power source rechargeable battery 6 being charged, and when not having rechargeable battery 6 or dry cell 7 in the power module, external power source can be powered by 1 pair of reduction voltage circuit 2 of charge management circuit.Because the voltage of external power source and rechargeable battery 6 is usually above the power supply nominal voltage of power consumption equipment, thereby need to carry out step-down by reduction voltage circuit 2, reduction voltage circuit 2 is used for and will converts low-voltage output to by the high voltage of power supply input.Because the voltage of dry cell 7 is usually less than the power supply nominal voltage of power consumption equipment, thereby need to boost by booster circuit 3, booster circuit 3 is used for being become by the low voltage transition of power supply input high voltage output.Dynamic monitoring circuit 4 is responsible for the output of Real-Time Monitoring reduction voltage circuit 2, and when the output voltage of reduction voltage circuit 2 was higher or lower than setting threshold, this dynamic monitoring circuit 4 can produce corresponding monitor signal and send to dynamic management circuit 5.Dynamic management circuit 5 is a kind of gating managing chips, selects to connect the output of reduction voltage circuit 2 or booster circuit 3 as the input power of power consumption equipment by the monitor signal of dynamic monitoring circuit 4 inputs.
In the present embodiment, the scope of setting threshold be higher than dry cell 7 voltage specification and a little less than the power supply nominal voltage, the voltage specification of dry cell 7 is 1.5V, the power supply nominal voltage of GPS receiving equipment body is 3.3V, the voltage specification of rechargeable battery 6 is 3.7V, and setting threshold is 3.1V.Booster circuit 3 is finished dry cell 7 input voltages to the voltage transitions of the nominal voltage of powering; Reduction voltage circuit 2 is finished rechargeable battery 6, external power source input voltage to the voltage transitions of nominal voltage, and dynamic monitoring circuit 4 is responsible for the output of Real Time Monitoring reduction voltage circuits 2.When using dry cell 7, booster circuit 3 is promoted to 3.3V with the voltage of dry cell 7, the output of reduction voltage circuit 2 is lower than 3.1V, dynamic monitoring circuit 4 can produce low level monitor signal and send to dynamic management circuit 5, and dynamic management circuit 5 is output as the power supply of GPS receiving equipment body according to this monitor signal gating booster circuit 3.When using rechargeable battery 6 or external power source, reduction voltage circuit 2 is down to 3.3V with the voltage of rechargeable battery 6 or external power source, the output voltage of reduction voltage circuit 2 is higher than 3.1V, this dynamic monitoring circuit 4 can produce the monitor signal of high level and send to dynamic management circuit 5, and 5 in dynamic management circuit is output as GPS receiving equipment body according to this monitor signal gating reduction voltage circuit 2 and powers.Wherein charge management circuit 1, reduction voltage circuit 2, booster circuit 3, dynamic monitoring circuit 4 and dynamic management circuit 5 all adopt integrated circuit (IC) chip to realize, wherein the model of charge management circuit 1 is BQ24230, the model of reduction voltage circuit 2 is AAT1141, the model of booster circuit 3 is AAT1217, the model of dynamic monitoring circuit 4 is AAT3562, and the model of dynamic management circuit 5 is AAT4674.
The operation principle of power-supply system is:
1) when inserting rechargeable battery 6 in the power module, reduction voltage circuit 2 produces the power supply nominal voltage, and the output that dynamic monitoring circuit 4 monitors reduction voltage circuit 2 is higher than setting threshold, produces high level signal, and this high level signal is transferred to dynamic management circuit 5; Dynamic management circuit 5 is output as the power consumption equipment power supply according to this high level signal gating reduction voltage circuit 2.
2) in power module, insert rechargeable battery 6, when charge management circuit 1 accesses external power source again simultaneously, the output of charge management circuit 1 cut-off rechargeable battery 6, and be rechargeable battery 6 chargings simultaneously; Dynamic monitoring circuit 4 monitors the output voltage of reduction voltage circuit 2 greater than setting threshold, produces high level signal, and this signal is transferred to dynamic management circuit 5; When external power source disconnected, charge management circuit 1 started rechargeable battery 6 power supply and complete charge processes.
3) when inserting dry cell 7 in the power module, booster circuit 3 produces the power supply nominal voltage, and the output voltage that dynamic monitoring circuit 4 monitors reduction voltage circuit 2 is lower than setting threshold, produces low level signal, and this low level signal is transferred to dynamic management circuit 5; Dynamic management circuit 5 is output as the power consumption equipment power supply according to this low level signal gating booster circuit 3.
4) insert dry cell 7 in power module, when charge management circuit 1 accessed external power source again simultaneously, dynamic monitoring circuit 4 monitored the output voltage of reduction voltage circuit 2 greater than setting threshold, produced high level signal, and this signal is transferred to dynamic management circuit 5; Dynamic management circuit 5 is output as the power consumption equipment power supply according to this high level signal gating reduction voltage circuit 2, ends simultaneously dry cell 7 outputs; When external power source disconnected, dynamic monitoring circuit 4 monitored the output voltage of reduction voltage circuit 2 less than setting threshold, recovered dry cell 7 power supplies.
For rechargeable battery 6 and the dry cell 7 that makes different length all can be compatible with in the same battery compartment, the present invention all arranges batteries connector with spring on both 8 at battery compartment corresponding to the inboard, two ends at dry cell 7 the two poles of the earth.As shown in Figure 2, when dry cell 7 was arranged in the battery compartment, batteries connector with spring on both 8 was connected dry cell 7; As shown in Figure 3, when rechargeable battery 6 was arranged in the battery compartment, batteries connector with spring on both 8 was stuck in rechargeable battery 6 in the battery compartment, connected rechargeable battery 6 by the press-down type SO-DIMM type internal storing strip connector that the battery compartment bottom arranges.In order to prevent that columnar dry battery 7 from rolling in battery compartment, also be provided with anti-slot rolling in the battery compartment bottom.
As shown in Figure 4, GPS receiving equipment of the present invention comprises power module and GPS receiving equipment body, power module is arranged in the GPS receiving equipment body, between the output of dynamic management circuit 5 and the GPS receiving equipment power input linear voltage regulator 9 is set in the power module.Because also need bear a plurality of ancillary equipment in the GPS receiving equipment body, equipment power dissipation is larger when entirely working, the present invention adds a microprocessor 10 between linear voltage regulator 9 and power input, and being used for provides switch controlling signal to linear voltage regulator 9.In the normal use procedure of GPS receiving equipment, which ancillary equipment microprocessor 10 is defined as and opens or closes power supply according to concrete mode of operation, to reduce the duration of full mode of operation as far as possible.Wherein microprocessor 10 is the ARM9 processor.
Should be pointed out that the above embodiment can make the invention of those skilled in the art's comprehend, but do not limit the present invention in any way creation.Therefore; although this specification has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can make amendment or be equal to replacement the invention; in a word, all do not break away from technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection range of the invention patent.
Claims (11)
1. power module, it is characterized in that: it comprises reduction voltage circuit, booster circuit, dynamic monitoring circuit and dynamic management circuit, wherein the power input of reduction voltage circuit is used for connecting rechargeable battery, and the output of described reduction voltage circuit connects an input of described dynamic management circuit; The power input of booster circuit is used for connecting dry cell, and the output of described booster circuit connects another input of described dynamic management circuit, and the output of described dynamic management circuit is the output of described power module; Described dynamic monitoring circuit gathers the output voltage of described reduction voltage circuit, and described output voltage is treated to monitor signal inputs in the described dynamic management circuit, described dynamic management circuit switches according to the gating that described monitor signal carries out between reduction voltage circuit and the booster circuit;
The handoff procedure of described dynamic management circuit comprises:
A) when the power input of described reduction voltage circuit has connected described rechargeable battery, described dynamic monitoring circuit monitoring is higher than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is high level signal; Described dynamic management circuit is according to the output of the described reduction voltage circuit of the described high level signal gating output as described power module;
B) when the power input of described booster circuit has connected described dry cell, described dynamic monitoring circuit monitoring is lower than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is low level signal; Described dynamic management circuit is according to the output of the described booster circuit of the described low level signal gating output as described power module.
2. a kind of power module as claimed in claim 1, it is characterized in that: the input at described reduction voltage circuit arranges a charge management circuit, and the handoff procedure of described dynamic management circuit comprises:
1) when described charge management circuit connects described rechargeable battery and external power source, described charge management circuit ends described rechargeable battery output, and is described rechargeable battery charging when by this charge management circuit being described reduction voltage circuit power supply;
2) when described charge management circuit connects described rechargeable battery, described rechargeable battery is described charge management circuit power supply, described dynamic monitoring circuit monitoring is higher than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is high level signal; Described dynamic management circuit is according to the output of the described reduction voltage circuit of the described high level signal gating output as described power module;
3) are connected with external power source when not being connected when described charge management circuit and described rechargeable battery, described dynamic monitoring circuit monitoring is lower than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is low level signal; Described dynamic management circuit is according to the output of the described booster circuit of the described low level signal gating output as described power module;
4) when described charge management circuit connects described external power source, described external power source is described charge management circuit power supply, described dynamic monitoring circuit monitoring is higher than setting threshold to the output voltage of described reduction voltage circuit, and the monitor signal of output is high level signal; Described dynamic management circuit is according to the output of the described reduction voltage circuit of the described high level signal gating output as described power module.
3. a kind of power module as claimed in claim 2 is characterized in that: described process 1), when described external power source disconnected, described charge management circuit started rechargeable battery powered and complete charge process.
4. a kind of power module as claimed in claim 2, it is characterized in that: described process 4), when described charge management circuit connects described external power source, when the input of described booster circuit connects described dry cell simultaneously, the output cut-off of described dry cell, the output of described dry cell recovered after described external power source disconnected.
5. such as the described a kind of power module of one of claim 1～4, it is characterized in that: the model of described reduction voltage circuit is AAT1141, the model of described booster circuit is AAT1217, and the model of described dynamic monitoring circuit is AAT3562, and the model of described dynamic management circuit is AAT4674.
6. such as the described a kind of power module of one of claim 2～4, it is characterized in that: the model of described charge management circuit is BQ24230.
7. a kind of power module as claimed in claim 5, it is characterized in that: the model of described charge management circuit is BQ24230.
8. such as the described a kind of power module of one of claim 1～4, it is characterized in that: it comprises that also one is used for the battery compartment of compatible dry cell or rechargeable battery, and described battery compartment all arranges batteries connector with spring on both corresponding to the inboard, two ends at described dry cell the two poles of the earth; Described battery compartment bottom is provided for connecting the press-down type SO-DIMM type internal storing strip connector of described rechargeable battery.
9. a kind of power module as claimed in claim 5 is characterized in that: it comprises that also one is used for the battery compartment of compatible dry cell or rechargeable battery, and described battery compartment all arranges batteries connector with spring on both corresponding to the inboard, two ends at described dry cell the two poles of the earth; Described battery compartment bottom is provided for connecting the press-down type SO-DIMM type internal storing strip connector of described rechargeable battery.
10. a kind of power module as claimed in claim 6 is characterized in that: it comprises that also one is used for the battery compartment of compatible dry cell or rechargeable battery, and described battery compartment all arranges batteries connector with spring on both corresponding to the inboard, two ends at described dry cell the two poles of the earth; Described battery compartment bottom is provided for connecting the press-down type SO-DIMM type internal storing strip connector of described rechargeable battery.
11. a use is such as the GPS receiving equipment of power module as described in one of claim 1～10, comprise GPS receiving equipment body and power module, it is characterized in that: comprise GPS receiving equipment body and power module, it is characterized in that: described power module is arranged in the described GPS receiving equipment body, between the output of described power module and the described GPS receiving equipment power input linear voltage regulator is set.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110224528 CN102280916B (en) | 2011-06-23 | 2011-08-05 | Power supply module compatible with plurality of batteries and GPS receiving equipment |
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| CN201110170908 | 2011-06-23 | ||
| CN201110170908.3 | 2011-06-23 | ||
| CN 201110224528 CN102280916B (en) | 2011-06-23 | 2011-08-05 | Power supply module compatible with plurality of batteries and GPS receiving equipment |
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| CN102280916A CN102280916A (en) | 2011-12-14 |
| CN102280916B true CN102280916B (en) | 2013-10-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102916477B (en) * | 2012-08-06 | 2015-02-25 | 关平 | Multifunctional intelligent accumulator discharge device compatible with multiple voltage grades |
| CN108021054A (en) * | 2016-11-02 | 2018-05-11 | 舒尔电子(苏州)有限公司 | The equipment of electric power controller including the device and the method powered by the device |
| CN108400628A (en) * | 2017-12-18 | 2018-08-14 | 欧普照明股份有限公司 | A kind of power-supplying circuit, dry cell power supply equipment and method for controlling power supply |
| CN113078699A (en) * | 2020-01-03 | 2021-07-06 | 华为技术有限公司 | Terminal, power supply method thereof and charging and discharging management circuit |
| CN112820960A (en) * | 2020-12-30 | 2021-05-18 | 深圳市爱克斯达电子有限公司 | Intelligent charging method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009224126A (en) * | 2008-03-14 | 2009-10-01 | Toyota Motor Corp | Power supply control system |
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| US5602462A (en) * | 1995-02-21 | 1997-02-11 | Best Power Technology, Incorporated | Uninterruptible power system |
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