CN208028650U - Low cost DC does not power off continuation of the journey device and system - Google Patents
Low cost DC does not power off continuation of the journey device and system Download PDFInfo
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- CN208028650U CN208028650U CN201820188847.0U CN201820188847U CN208028650U CN 208028650 U CN208028650 U CN 208028650U CN 201820188847 U CN201820188847 U CN 201820188847U CN 208028650 U CN208028650 U CN 208028650U
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Abstract
The utility model provides low cost DC and does not power off continuation of the journey device and system, including power adapter circuit, lithium electricity management of charging and discharging and path switching circuit, booster circuit, output port and lithium battery；Power adapter circuit is connected with lithium electricity management of charging and discharging and path switching circuit, for external input voltage progress voltage stabilizing to be obtained first voltage, and first voltage is sent to lithium electricity management of charging and discharging and path switching circuit；Lithium electricity management of charging and discharging and path switching circuit are connected with booster circuit, and whether external loading needs to charge for identification, and is powered in case of need for external loading by lithium battery；Booster circuit is connected with output port, for first voltage to be risen to second voltage；Output port is connected with external loading, for being powered for external loading according to second voltage.The utility model is at low cost, and stability is good, and multiport is more practical for electricity output, and automatic recognition of load is more energy saving, can be compatible with different power supply adaptors.
Description
Technical field
The utility model is related to power electronics fields, do not power off continuation of the journey device more particularly, to low cost DC and are
System.
Background technology
In many living scenes, it would be desirable to use DC uninterrupted continuation of the journey device temporarily.For example stop suddenly inside family
Electricity then needs the router of electricity consumption just cannot surf the Internet, and cannot work to the pumping oxygen machine of fish jar, the burglary-resisting system of family (including
Intelligent door lock, infrared detector etc.) it cannot also work.Especially nowadays under the increasingly hot scene of smart home, direct current is continuous
Electricity continuation of the journey device becomes more and more important in the family.Current continuation of the journey device type DC uninterrupted on the market is various, is powering
On interface, single supply port is mostly used greatly；In charge and discharge scheme, mostly use greatly separate type device realize (i.e. charging chip with
Boost chip detaches)；On power down handover scheme, diode switching or microcontroller switching are mostly used greatly；On replaceable, greatly
Mostly use special equipment power supply.
DC uninterrupted continuation of the journey device on the market also has to face although can also achieve the purpose that continuation of the journey at present
Many the problem of needing to improve.First, in one family of today, need the equipment for connecting DC uninterrupted continuation of the journey device more next
More, on power supply interface and multifarious, DC uninterrupted continuation of the journey device needs to be compatible with more power supply interfaces.Secondly,
Not only of high cost using the battery charging and discharging scheme of separate type, the battery charging and discharging scheme that stability does not also integrate is high.Again
Person carries out the scheme of power down switching using diode or microcontroller, and the power source path handover scheme of integrated form is not efficient, steady
It is fixed and cost-effective.Finally, many equipment in family at present, band power supply adaptor (such as the fish jar in your family
Aerator, all can one power supply adaptor of band when buying), if using dedicated ups equipment, this power supply adaptor will
It is idle, the wasting of resources is not only caused, the cost of equipment is also increased, does not have the market competitiveness.
In conclusion lacking cost-effective and highly practical DC uninterrupted continuation of the journey device in currently available technology.
Utility model content
In view of this, the purpose of this utility model is to provide low cost DCs not to power off continuation of the journey device and system, cost
Low, stability is good, and multiport is more practical for electricity output, and automatic recognition of load is more energy saving, and it is suitable can be compatible with different power supplys
Orchestration.
In a first aspect, the utility model embodiment, which provides low cost DC, does not power off continuation of the journey device, including：Power adaptation
Circuit, lithium electricity management of charging and discharging and path switching circuit, booster circuit, output port and lithium battery；
The power adapter circuit is connected with the lithium electricity management of charging and discharging and path switching circuit, and being used for will be external
Input voltage carries out voltage stabilizing and obtains first voltage, and the first voltage is sent to the lithium electricity management of charging and discharging and path switching
Circuit；
The lithium electricity management of charging and discharging and path switching circuit, are connected with the booster circuit, external negative for identification
Whether load needs to charge, and is in case of need that the external loading is powered by the lithium battery；
The booster circuit is connected with the output port, for the first voltage to be risen to second voltage；
The output port is connected with the external loading, for being the external loading according to the second voltage
Power supply.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, the booster circuit includes the first booster circuit and the second booster circuit, and the second voltage includes tertiary voltage and the 4th
Voltage, the output port include the first output port, second output terminal mouth and third output port.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect
Two kinds of possible embodiments, wherein first booster circuit is used to the first voltage rising to the tertiary voltage, institute
The second booster circuit is stated for the first voltage to be risen to the 4th voltage, first output port with described first liter
Volt circuit is connected, and the second output terminal mouth is connected with second booster circuit, the third output port with it is described
Lithium electricity management of charging and discharging and path switching circuit are connected.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein the lithium electricity management of charging and discharging and path switching circuit include lithium electric protection IC, the lithium
Electric protection IC is connected with the lithium battery, and whether the lithium battery needs to charge for identification, and the case where needing charging
The lower control external input voltage charges to the lithium battery.
The third possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Four kinds of possible embodiments, wherein the lithium electric protection IC is additionally operable in the way of straight-through, pass through the third output end
Mouth provides the first voltage to the external loading.
With reference to first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect,
In, the power adapter circuit includes power input interface, input filter circuit, voltage stabilizing chip, overcurrent insurance and power supply instruction
Lamp.
The third possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Six kinds of possible embodiments, wherein the lithium electricity management of charging and discharging and path switching circuit further include forcing output switch electricity
Road, thermistor, boost inductance and output filter capacitor.
With reference to first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect,
In, the booster circuit is additionally operable to enter dormant state in the case of no external loading access.
The 6th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Eight kinds of possible embodiments, wherein the thermistor is NTC type thermistors.
Second aspect, the utility model embodiment provide low cost DC and do not power off continuation of the journey system, including as described above
Low cost DC does not power off continuation of the journey device, further includes gsm module, for being sent out to terminal in the case where external input voltage is cut off
Send prompting message.
The utility model provides low cost DC and does not power off continuation of the journey device and system, including power adapter circuit, lithium electricity
Management of charging and discharging and path switching circuit, booster circuit, output port and lithium battery；Power adapter circuit and lithium electricity charge and discharge fulgurite
Reason and path switching circuit are connected, and for external input voltage progress voltage stabilizing to be obtained first voltage, and first voltage are sent
To lithium electricity management of charging and discharging and path switching circuit；Lithium electricity management of charging and discharging and path switching circuit are connected with booster circuit,
Whether external loading needs to charge for identification, and is powered in case of need for external loading by lithium battery；It rises
Volt circuit is connected with output port, for first voltage to be risen to second voltage；Output port is connected with external loading, uses
According to second voltage be external loading power.The utility model is at low cost, and stability is good, and multiport is more real for electricity output
With automatic recognition of load is more energy saving, can be compatible with different power supply adaptors.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment cited below particularly, and
The appended attached drawing of cooperation, is described in detail below.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is that the low cost DC that the utility model embodiment provides does not power off continuation of the journey schematic device；
Fig. 2 is that another low cost DC that the utility model embodiment provides does not power off continuation of the journey schematic device；
Fig. 3 (a) (b) is the power adapter circuit schematic diagram that the utility model embodiment provides；
Fig. 4 (a) (b) is the lithium electricity management of charging and discharging and path switching circuit schematic diagram that the utility model embodiment provides；
Fig. 5 is the third booster circuit schematic diagram that the utility model embodiment provides；
Fig. 6 is the 4th booster circuit schematic diagram that the utility model embodiment provides；
Fig. 7 is the first output port circuit schematic diagram that the utility model embodiment provides；
Fig. 8 is the second output terminal mouth circuit diagram that the utility model embodiment provides；
Fig. 9 is the third output port circuit schematic diagram that the utility model embodiment provides.
Icon：
10- power adapter circuits；20- lithium electricity management of charging and discharging and path switching circuit；21- lithium electric protections IC；30- boosts
Circuit；40- output ports；50- lithium batteries.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Currently, lacking cost-effective and highly practical DC uninterrupted continuation of the journey device in the prior art.With intelligent family
The increasingly burning hot of market is occupied, future will have a large amount of intelligent electronic device and enter family and school dormitory.Family and school place
House inevitably has the case where short time power failure, such as the factors such as tripping caused by electricity consumption improper use, in this way can be directly to family
Or the equipment of continued power is needed to cause to power off in school dormitory, it influences user experience and even brings some safety problems.Direct current
Continuation of the journey device is not powered off as a kind of short-term continuation of the journey power supply unit, future will win a large amount of occupation rate of market.Based on this, this reality
The low cost DC provided with new embodiment does not power off continuation of the journey device and system, and at low cost, stability is good, and multiport power supply is defeated
Go out more practical, automatic recognition of load is more energy saving, can be compatible with different power supply adaptors.
Fig. 1 is that the low cost DC that the utility model embodiment provides does not power off continuation of the journey schematic device.
Referring to Figures 1 and 2, low cost DC do not power off continuation of the journey device include：Power adapter circuit 10, lithium electricity charge and discharge fulgurite
Reason and path switching circuit 20, booster circuit 30, output port 40 and lithium battery 50；
Power adapter circuit 10 is connected with lithium electricity management of charging and discharging and path switching circuit, for external input is electric
Pressure carries out voltage stabilizing and obtains first voltage, and first voltage is sent to the lithium electricity management of charging and discharging and path switching circuit；
Specifically, external input voltage is DC5V~24V, first voltage DC5V.What the utility model embodiment provided
Shown in power adapter circuit such as Fig. 3 (a) (b).J5 is power input port, supports DC5V~24V control sources.Capacitance C26,
C27, C29, C39, C32, C34 and resistance R26 (2 Ω) constitute input filter circuit；U8 (LM2596-5.0) is voltage stabilizing chip,
In conjunction with D7 (1N5820), T1 (100uh) and the two output filter capacitors of C35, C38 composition regulator circuit and export DC5V electricity
Pressure, F1 (3A) insure for overcurrent, R20 and pow_led1 composition power supply indicator lights.
Product on the market is dedicated UPS equipment mostly at present, and this kind of equipment is a complete system, is not had only
Vertical property, compatibility and substitutability are poor.The utility model embodiment is directed to this problem, power adapter circuit is provided, by interior
5V regulator circuits are set, the power supply adaptor of external DC5V~24V are realized complete compatible.User is in use, can utilize existing
DC power supply modes are powered and (support DC5V~24V control sources), need not be by the present apparatus built in AC-DC conversion circuits, this
Sample has saved the use cost of user, while also reducing the cost of product, and the power supply mode of product is allowed to have stronger compatibility
Property and substitutability.For example now there are one fish jar aerator in user hand, present user powers off fish anoxic and dies in order to prevent,
Want to buy a DC uninterrupted continuation of the journey device, due to having power supply adaptor in user hand, if according at present on the market
UPS equipment, then the adapter in user hand just only throw away, and use this proposition power adapter circuit after, user is directly sharp
DC uninterrupted continuation of the journey device can be allowed to work with existing power supply adaptor on hand.
Lithium electricity management of charging and discharging and path switching circuit 20, are connected, whether external loading for identification with booster circuit
It needs to charge, and is powered in case of need for external loading by lithium battery；
Specifically, the lithium electricity management of charging and discharging and path switching circuit such as Fig. 4 (a) (b) that the utility model embodiment provides
It is shown.Lithium electric protection IC21, i.e., U11 (IP5310) in figure, to carry out charging and discharging lithium battery management and power source path management
Core controls IC, and when external power supply is powered, this lithium electric protection IC21 can need to need not be charged with automatic identification lithium battery, if
It needs, charges for lithium battery group, if you do not need to do not charge to lithium battery then, while this IC is using straight-through side
Formula externally provides DC5V voltages, i.e., is directly powered to external loading by third output port；After external power supply stops powering,
Lithium electric protection IC can start lithium battery group and provide DC5V voltages by the IC for external loading automatically, realize the purpose not powered off.
Switch S2 forms hand-operated forced output switch circuit with current-limiting resistance R34.R27 is NTC type thermistors, to the temperature of system into
Row monitoring, achievees the purpose that Thermal protection.L2 (1uh) be boost inductance, in conjunction with U11 and output filter capacitor C45, C46, C47,
C48, C44 (470UF) provide DC5V voltages, resistance R30 (0 ohm), capacitance C42 (22UF), capacitance C43 (22UF) group for outside
At battery input, output filter circuit.
The mode that current product on the market mostly uses greatly resolution element realizes power source path management and lithium electricity charge and discharge
Management.The utility model embodiment is directly realized lithium electricity management of charging and discharging and path switching work(using the chip of integrated form
Can, while the voltage of lithium battery group is directly risen into 5V, greatly improve the stability of system and significantly reduce system at
This, makes product have much the market competitiveness.
Booster circuit 30, is connected with output port, for first voltage to be risen to second voltage；
Specifically, first voltage DC5V, second voltage include tertiary voltage and the 4th voltage, and here, tertiary voltage is
DC9V, the 4th voltage are DC12V, and DC5V is risen to DC9V by the first booster circuit, and DC 5V are risen to DC12V by the second booster circuit,
First output port is connected with the first booster circuit, and tertiary voltage, second output terminal mouth and second liter are provided to external loading
Volt circuit is connected, to external loading provide the 4th voltage, third output voltage then directly with lithium electricity management of charging and discharging and path
Switching circuit 20 is connected, and directs out section load and provides 5V voltages, realizes multiport output.DC5V liter 9V booster circuits,
The circuit of DC5V liter 12V booster circuits and output port is respectively as shown in Fig. 5, Fig. 6, Fig. 7.Pass through lithium electricity management of charging and discharging and road
After diameter switching circuit obtains DC5V voltages, DC5V electricity is provided for external loading through capacitance C51, C54 and power supply output port J8
Pressure.Meanwhile this DC5V voltage also rises 9V booster circuits for DC5V, DC5V rises 12V booster circuits and provides input voltage.Capacitance C28,
C30 is the power input filter capacitor of booster circuit.The input voltage that resistance R22 (100K), R23 (100K) pass through pull-up is U9
(SX1308) it provides with the Enable Pin pin 4 of U10 (SX1308) and enables voltage, U9 and U10 is allowed to enter working condition.Inductance L4
(10uh) and L5 (10uh) are the boost inductance of booster circuit.Diode D4 (1N5820) and D5 (1N5820) is booster circuit
A part, in conjunction with voltage stabilizing chip U9, U10 and resistance R24 (131K), R31 (10K), R25 (147K), R33 (10K) and capacitance
C40 (15PF), C41 (15PF) provide the voltage of DC9V and DC12V for external loading.Most afterwards through J7 power output port and
C50, C53 output filter capacitor provide 9V voltages for external loading；Filtered electrical is exported through J6 power supply output ports and C50, C53
Hold and provides 12V voltages for external loading.
Product on the market is mostly single power supply output port at present, and this scheme does not have flexibility, in nowadays family
In the case of the more and more electronic equipments in front yard or school dormitory, the defect of this kind of product, which seems, to become increasingly conspicuous.This practicality is new
Type embodiment uses booster circuit, by lithium electricity management of charging and discharging and the standard 5V voltages of path switching IC outputs, supply boosting electricity
Road, and then 9V the and 12V supply voltages frequently encountered in being lived, by powering, output port supply load uses, simultaneously
This booster circuit also has the function of remained capacity, and when there is no load, booster circuit reaches power saving mesh automatically into suspend mode
's.
Output port 40, is connected with external loading, for being powered for external loading according to second voltage.
Specifically, output port 40 is met as shown in Figure 7, Figure 8 and Figure 9 including three output ports as described above
The requirement of multiport output, has more practicability.
The low cost DC that the utility model embodiment provides does not power off continuation of the journey device, defeated by externally fed equipment first
The voltage for entering a DC5V~24V, by power adapter circuit by external input voltage voltage stabilizing to DC5V (first voltage), then
The 5V voltages that power adapter circuit obtains are sent to lithium electricity management of charging and discharging and path switching IC (i.e. lithium electric protection IC), this IC can
It need to need not be charged, be charged if necessary for lithium battery group, if you do not need to then not to lithium with automatic identification lithium battery
Battery charges, while this IC externally provides DC5V voltages by the way of straight-through.After external power supply stops powering, lithium electricity
Management of charging and discharging and path switching IC can start lithium battery group and provide DC5V voltages for external loading automatically, realize the mesh not powered off
's.DC5V rises 9V booster circuits (the first booster circuit) and DC5V liter 12V booster circuits (the second booster circuit) obtain lithium electricity and fill
After the voltage of electric discharge management and path switching IC, DC5V is risen into DC9V and 12V respectively, booster circuit can be automatic in the process
Identification load access situation, if load does not access, booster circuit will enter dormant state；If there is load accesses, boosting
Circuit will automatically exit from dormant state and provide corresponding voltage for load.It is supplied for external loading finally by power supply output port
Electricity.The utility model embodiment power supply allows DC5V~24V wide-range input voltages；Integrated lithium electricity management of charging and discharging and path are cut
Circuit is changed to be managed the charge and discharge of lithium battery and be managed power source path.External power supply provides excitation for system
When, excitation provides DC5V voltages by this IC to rear class booster circuit and load, while if when lithium battery group not enough power supply, right
Lithium battery group charges, and when lithium battery group electricity abundance, stops charging.External power supply is after system stops power supply, this IC is certainly
Dynamic Switching power path, is changed to lithium battery group and directly provides DC5V voltages for rear class booster circuit and load.
It includes that low cost DC as described above does not power off continuation of the journey device that low cost DC, which does not power off continuation of the journey system, further includes
Gsm module, for sending prompting message to terminal in the case where external input voltage is cut off, to remind relevant staff to open
Move corresponding emergency measure.
The low cost DC that the utility model embodiment provides does not power off continuation of the journey device and has the following advantages that：(1) element makes
With few, at low cost, product stability height
(2) multiport is for electricity output, compatible different loading demand
(3) wide-voltage range inputs, compatible different power supply adaptor
(4) automatic recognition of load saves electric energy
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, can also be electrical connection；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned term with concrete condition
Concrete meaning in the present invention.
In addition, term " first ", " second ", " third " are used for description purposes only, it is not understood to indicate or imply phase
To importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to aforementioned
The utility model is described in detail in embodiment, it will be understood by those of ordinary skill in the art that：It is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to the skill recorded in previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation is replaced, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model is answered described is wanted with right
Subject to the protection domain asked.
Claims (10)
1. a kind of low cost DC does not power off continuation of the journey device, which is characterized in that including：Power adapter circuit, lithium electricity charge and discharge fulgurite
Reason and path switching circuit, booster circuit, output port and lithium battery；
The power adapter circuit is connected with the lithium electricity management of charging and discharging and path switching circuit, is used for external input
Voltage carries out voltage stabilizing and obtains first voltage, and the first voltage is sent to the lithium electricity management of charging and discharging and path and switches electricity
Road；
The lithium electricity management of charging and discharging and path switching circuit, are connected, external loading is for identification with the booster circuit
It is no to need to charge, and be in case of need that the external loading is powered by the lithium battery；
The booster circuit is connected with the output port, for the first voltage to be risen to second voltage；
The output port is connected with the external loading, for being powered for the external loading according to the second voltage.
2. low cost DC according to claim 1 does not power off continuation of the journey device, which is characterized in that the booster circuit includes
First booster circuit and the second booster circuit, the second voltage include tertiary voltage and the 4th voltage, the output port packet
Include the first output port, second output terminal mouth and third output port.
3. low cost DC according to claim 2 does not power off continuation of the journey device, which is characterized in that first booster circuit
For the first voltage to be risen to the tertiary voltage, second booster circuit is used to rise to the first voltage described
4th voltage, first output port are connected with first booster circuit, the second output terminal mouth and described second
Booster circuit is connected, and the third output port is connected with the lithium electricity management of charging and discharging and path switching circuit.
4. low cost DC according to claim 2 does not power off continuation of the journey device, which is characterized in that the lithium electricity charge and discharge fulgurite
Reason and path switching circuit include lithium electric protection IC, and the lithium electric protection IC is connected with the lithium battery, described for identification
Whether lithium battery, which needs, is charged, and is filled to the lithium battery needing the in the case of of charging to control the external input voltage
Electricity.
5. low cost DC according to claim 4 does not power off continuation of the journey device, which is characterized in that the lithium electric protection IC is also
For in the way of straight-through, the first voltage to be provided to the external loading by the third output port.
6. low cost DC according to claim 1 does not power off continuation of the journey device, which is characterized in that the power adapter circuit
Including power input interface, input filter circuit, voltage stabilizing chip, overcurrent insurance and power supply indicator light.
7. low cost DC according to claim 4 does not power off continuation of the journey device, which is characterized in that the lithium electricity charge and discharge fulgurite
Reason and path switching circuit further include forcing output switch circuit, thermistor, boost inductance and output filter capacitor.
8. low cost DC according to claim 1 does not power off continuation of the journey device, which is characterized in that the booster circuit is also used
In entering dormant state in the case of no external loading access.
9. low cost DC according to claim 7 does not power off continuation of the journey device, which is characterized in that the thermistor is
NTC type thermistors.
10. a kind of low cost DC does not power off continuation of the journey system, which is characterized in that any to claim 9 including such as claim 1
The described low cost DC does not power off continuation of the journey device, further includes gsm module, in the case where external input voltage is cut off to
Terminal sends prompting message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820188847.0U CN208028650U (en) | 2018-02-02 | 2018-02-02 | Low cost DC does not power off continuation of the journey device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820188847.0U CN208028650U (en) | 2018-02-02 | 2018-02-02 | Low cost DC does not power off continuation of the journey device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208028650U true CN208028650U (en) | 2018-10-30 |
Family
ID=63903797
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820188847.0U Expired - Fee Related CN208028650U (en) | 2018-02-02 | 2018-02-02 | Low cost DC does not power off continuation of the journey device and system |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021103102A1 (en) * | 2019-11-29 | 2021-06-03 | 苏州贝昂科技有限公司 | Two-circuit power supply device and power supply system |
-
2018
- 2018-02-02 CN CN201820188847.0U patent/CN208028650U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021103102A1 (en) * | 2019-11-29 | 2021-06-03 | 苏州贝昂科技有限公司 | Two-circuit power supply device and power supply system |
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