CN203071613U - Rechargeable mobile device - Google Patents
Rechargeable mobile device Download PDFInfo
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- CN203071613U CN203071613U CN 201320012637 CN201320012637U CN203071613U CN 203071613 U CN203071613 U CN 203071613U CN 201320012637 CN201320012637 CN 201320012637 CN 201320012637 U CN201320012637 U CN 201320012637U CN 203071613 U CN203071613 U CN 203071613U
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Abstract
The utility model discloses a charging apparatus for a mobile device such as a barrow or a luggage barrow. The mobile device comprises a charging module and a charging connecting base connected with the charging module, wherein the charging connecting base comprises a male joint on one end, a female base on the other end, and two electrodes internally connected with each other. When a frame of the mobile device such as the barrow is overlapped back and forth, the male joint of the charging connecting base of the back mobile device is connected with the female base of the charging connecting base of the front mobile device, so that a plurality of mobile devices are connected in series to charge. The mobile devices having the charging apparatuses can be charged in quantities, a conventional charging process is simplified, a device utilization rate is raised, use security of the devices is raised and maintenance cost is reduced.
Description
Technical field
The utility model relates to the mobile device that has electronic installation, particularly has the chargeable mobile device of electronic installation.
Background technology
Along with the sustainable development of commercial and public service enterprise, in the market, public places such as supermarkets, airport, mobile devices such as portable hand go-cart and luggage truck have obtained application widely, have made things convenient for the carrying of user to luggage and article.In order to make the user in use can make things convenient for, get access in time more consumption or relevant information, the electronics playback equipment can be installed so that user's information is obtained the broadcast of carrying out positional information, navigation information, advertising message and other relevant information with businessman at existing handcart and luggage truck.But because present Vehicular charging depends on fixing external power supply joint, therefore the quantity of chargeable vehicle is subjected to the restriction of external power supply joint, and the large-scale public place of hundreds and thousands of handcarts is being arranged, and is difficult to numerous vehicles is charged simultaneously.Therefore, there is more inconvenience in the use.
In addition, exist the power interface expose also to influence the safe handling of handcart and luggage truck at car body, make operating process loaded down with trivial details and be not easy to use.
Have, existing charging modes needs external fixing power connection again, and the quantity of joint is also very huge, management inconvenience, and economy is not good.
The utility model content
Therefore, one of the purpose of this utility model provides a kind of chargeable mobile device, with in the problems referred to above that solve prior art one of at least.
According to one side of the present utility model, a kind of chargeable mobile device is provided, the charging Connection Block that is connected with described charging module that comprises body, is installed on the charging module on the body and installs at body, described charging Connection Block can be connected with the charging Connection Block of other described mobile device, wherein, described charging module comprises:
The bus current detection module is for detection of the power supply bus current that flows through described charging module, according to the charging current of the result's control that detects to this mobile device.
In above-mentioned mobile device, the charging Connection Block can comprise: the housing of insulation, be formed with the interface that inserts for conductor wire on the housing, in the male of housing one end and the female seat of the other end, described male and female seat have electrode respectively, and at the electrode slice that is electrically connected with a pair of described male and female seat respectively of described enclosure interior, when folding mutually before and after the described mobile device, the male of the charging Connection Block of the mobile device at rear is connected on the female seat of charging Connection Block of the place ahead mobile device, thereby a plurality of described mobile devices are connected in series charging.
In some embodiments, each described female seat comprises the reed electrode, the reed electrode comprises the bottom that is electrically connected with described electrode slice, with the elastic spring that stretches out respectively from described center bottom and both sides, the electrode of described elastic spring and described male is suitable, when being inserted by the male of another charging Connection Block with the described female seat of box lunch, described reed electrode is clamped the electrode on the male of insertion and is formed and is electrically connected.
When a plurality of mobile device main bodys were folded mutually, the male of the charging Connection Block of the mobile device at rear was connected on the female seat of charging Connection Block of the place ahead mobile device, realizes serial connection and the charging of a plurality of described mobile devices.Can realize the batch charging of a plurality of mobile devices thus, and only need an externally fed power interface to get final product, have better economic.
In some embodiments, described charging module also comprises: battery charging management circuit, the power supply of management rechargeable battery.
According on the other hand of the present utility model, the charging method of above-mentioned mobile device is provided, the charging Connection Block that described mobile device comprises body, is installed on the charging module on the body and installs at body, described charging Connection Block is connected with described charging device, described charging method comprises: a plurality of described mobile devices are serially connected by described charging Connection Block, realize the batch charging of a plurality of described mobile devices.Thus, do not need a large amount of external fixed power source interfaces, saved a large amount of spaces, reduced the cost of equipment simultaneously.
Said method can comprise that also described mobile device detects the power supply bus current that flows through its charging module, according to the charging current of the result's control that detects to this mobile device, to be preferably other charging of mobile devices.
Usually, the load capacity of dc power supply is limited, and the vehicle number that can be recharged simultaneously is just limited.According to aforesaid way, under the common situation of charging of the mobile device of a plurality of serial connections, make the charging of mobile devices that afterwards inserts earlier, thereby make the mobile device preferentially charging always of mobile device (handcart or the luggage truck etc.) afterbody that stacks of serial connection, be applicable to the common situation that the car that is serially connected in folded tailstock portion is always taken at first.And this method can make administrative staff's need not to worry restricted problem of the abundant charging vehicle of load capacity of dc power supply.
In the above-described embodiment, the described charging module of mobile device also can comprise: controlled DC step-down module, receive the control signal of described bus current detection module, and provide charging current according to described control signal for rechargeable battery.
In some embodiments, described charging module comprises the bus current detection module, described method comprises: the bus current that detects the charging module of this mobile device of flowing through when described bus current detection module reaches or during near the load limit electric current of dc power supply, the charging current of the charging module of this mobile device of temporarily disconnected.Thus, the car that is serially connected in afterbody is preferentially charging always, when satisfying the afterbody vehicle and being taken by the user, sufficient as far as possible energy is arranged, and can make administrative staff's need not to worry restricted problem of the abundant charging vehicle of load capacity of dc power supply.
Under the situation of the common charging of the above-mentioned mobile device of a plurality of serial connections, can easily handcart when stacking, realized fore-and-aft direction charging in batches compactly, and the arrangement of the pushdown in can charging in batches by go-cart, always preferentially charging stacks the mobile device (handcart or luggage truck etc.) that enters from the rear, thus charging and the use of mobile device in enormous quantities in the public place of being more convenient for.
Description of drawings
Below in conjunction with accompanying drawing execution modes more of the present utility model are described.Wherein:
Fig. 1 is the schematic diagram of the handcart batch charging scheme of the utility model one execution mode;
Fig. 2 is the schematic diagram of the handcart with electronic installation of the utility model one execution mode;
Fig. 3 is the schematic diagram of the charging Connection Block of the utility model one execution mode;
Fig. 4 is the schematic diagram of charging Connection Block internal structure shown in Figure 3;
Fig. 5 has shown the schematic diagram that charging Connection Block shown in Figure 3 is serially connected and is connected with the external charging power supply;
The ac-dc conversion schematic representation of apparatus of Fig. 6 for using in the batch charging scheme of the utility model one execution mode;
Fig. 7 is the schematic diagram of the female seat of ac-dc conversion device shown in Figure 6;
Fig. 8 stacks schematic diagram for handcart in the batch charging scheme of the utility model one execution mode.
Embodiment
For ease of explanation with understand, in the explanation of following execution mode with the example of handcart as mobile device.It will be understood by those skilled in the art that execution mode of the present utility model goes for any mobile device that is similar to handcart and so on.
Fig. 1 is the schematic diagram of mobile device (handcart) the batch charging scheme of the utility model one execution mode.As shown in Figure 1, wherein each frame 101,102,103 ... the charging module of representing a handcart respectively.Each charging module comprises bus current detection module 1011,1021,1031 separately ..., controlled DC step- down module 1012,1022,1032 ..., battery charging management circuit 1013,1023,1033 ..., and rechargeable battery 1014,1024,1034 ...Each module can have identical structure.Rechargeable battery can adopt lithium battery.
For example, charging module 101 comprises bus current detection module 1011, and this current detection module 1011 can adopt conventional mode to realize.For example, the MCU(microcontroller chip unit that adopts the Hall current detecting sensor and have the A/D input) and peripheral circuit form current detection module.Two of the Hall current detecting sensor pins (IP+, IP-) that are used for connecting outside current path to be measured are serially connected between the male and female seat of this car charging with the same metal electrode (negative or positive electrode) of power supply bus, connect this moment between the male of metal electrode of Hall current detecting sensor and the female seat and must keep opening circuit.The Hall current detecting sensor has the output voltage of corresponding relation by the detection to the power supply bus current that flows through this transducer from the output of isolation output and the tested bus current size of transducer.The A/D input of this magnitude of voltage input MCU, through the conversion of the A/D of MCU inside change-over circuit and after through conventional routine processes, the concrete current value of this car charging with the power supply bus can obtain flowing through.
Total be exactly the charging power supply current value of the handcart that the detected current value that flows through the power supply bus of this module is connected in series at its rear.
When detected current value during very near the limiting current of power supply, if to the charging module for power supply of this car, may cause over current protection this moment, cause all vehicles all can not charge.So, MCU this moment will be exported a control signal and go to close DC step-down module by enabling I/O port that (EN) control input end is connected with controlled DC step-down module, it is quit work, so just cut off the power supply of the live part of this car, guaranteed to be positioned at the charging power supply of this car vehicle afterwards.
This car charging of flowing through that obtains as MCU is lower than predetermined value with power supply bus current value; be the quantity of rear handcart (correspondingly; total charging current size) do not reach default thresholding (can be the specified charging current that the total output current thresholding of charge power supply deducts this car) as yet; thereby can be because of the stack of the charging current of this car and when causing the overload protection of charge power supply; MCU will be by enabling control signal deactivation DC step-down module of I/O port output that (EN) control input end is connected with controlled step-down DC module; make it be operated in the step-down translative mode; for the Charge Management of this car partly provides+the 5V power supply, this car begins charging.
The Hall current detecting element can adopt the Related product of ALLEGRO company, and concrete model needs to decide with the lowest high-current value that dc power supply can provide according to charging.When for example maximum supply current is 40A, can select the ACS758LCB-050B-PFF-T in the ACS758XCB of the said firm series, it detects current value range is positive and negative 50A.MCU can select the chip of the RL78 series band A/D input port of RENESAS for use.
In addition, current detection module also can adopt high-accuracy voltage comparator and peripheral circuit thereof to form.Because the bottom that is positioned at vehicle with metal electrode (just is being useful on two power supplies that vehicle stacks back power supply usefulness when charging in batches, negative pole), each metal electrode has male and female seat, certain distance is arranged between the male of same metal electrode and the female seat, form certain internal resistance between the male of same electrode and the female seat, when big electric current is flowed through electrode, between the male of same electrode and female seat, there is certain voltage difference, also can judges the size of the bus current that flows through electrode indirectly by detecting voltage extent between more same electrode male and the female seat.The internal resistance of electrode is limited, for the power supply bus, even the same electrode of same car is under the situation that big electric current passes through, the voltage difference that (between male and the female seat) produces at the electrode two ends is also very low, so will consider to use high-precision voltage comparator.Two inputs that the two ends (male and female seat) of same electrode are connected comparator respectively by peripheral circuit, enable (EN) input with what the signal of comparator output terminal output went to control controlled step-down DC conversion, so also can reach by the bus current detection and go to control the purpose whether this car live part powers.
In the present embodiment, the male of the charging Connection Block of first car at first inserts the female seat (for example 1500W, 2000W or 3000W) of ac-dc conversion device coupling, is connected with power supply by female seat again.
The input of controlled DC step-down module 1012 is connected with an electrode of the close male of power supply bus of charging in batches.Rechargeable battery 1013 is connected the power supply bus of the voltage output end of controlled DC step-down module 1012 and in batches charging near between another electrode of female seat.Controlled DC step-down module 1012 can adopt can be operated in wideer input voltage range, the DC step-down conversion chip and the peripheral circuit composition thereof that enable (EN) control end than the band of large load current can be provided, and also can adopt and can be operated in wideer input voltage range, the DC buck controller and the peripheral circuit composition thereof that enable (EN) control end than the band of large load current can be provided.
The selection of the step-down conversion chip of DC step-down module section and the concrete operating voltage range of step-down switching controller will be decided according to the output voltage of the actual dc power supply of selecting for use that is positioned at the power supply front end, for example, the output voltage specification of available dc power supply has: DC7.5V, DC12V, DC24V, DC27.5V, when the maximum continuous load electric current when single vehicle charges is about 4.2A/5V, can selection work be the DC conversion chip of DC5.5V～DC36V in input voltage range, its load current of exporting continuously can reach 5A at least, and output voltage is adjustable within the specific limits.The step-down conversion chip can adopt for example TPS5450, the RT8279 of RICHTEK company etc. of TI company.
Charge management circuit can adopt the too family chips such as HB6293A of electronics of the existing lithium cell charging management integrated circuit that possesses charging process control such as Shenzhen China, all required charging process management and controls of lithium cell charging that this type of chip is integrated comprise: management and the control of charging processes such as preliminary filling, constant current, constant voltage.
By scheme shown in Figure 1 as can be seen, in the batch charging scheme of the present utility model, the circuit that the charging device of each handcart constitutes is to be connected in parallel between two electrodes of power supply bus.
Fig. 2 has shown the example of a handcart, and the Connection Block that wherein charges is installed on the handcart bottom.Fig. 3 has shown the example of the charging Connection Block in this handcart.
As shown in Figure 3, this charging Connection Block 30 comprises 31,31 ' and two female seat 32,32 ' of 35, two males of housing of insulation.Have electrode 33 on the male 31 ', have electrode 33 ' on the male 31 '.Female seat 32,32 ' has and male 31, and the opening of 31 ' respective shapes is to hold male.Be formed with on the housing 35 for the interface 351,351 ' in the conductor wire access charging Connection Block 30 of charging module.
What Fig. 4 showed is the internal structure schematic diagram of charging Connection Block 30.As shown in the figure, the copper facing electrode slice 34,34 ' that comprises two mutually insulateds in the housing 35 of charging Connection Block 30.Copper facing electrode slice 34 1 ends are electrically connected with electrode 33, are used for the tripartite reed electrode that contact 321 electrical connections on the other end and the female seat 32; Copper facing electrode slice 34 ' one end is electrically connected with electrode 33 ', is used for the tripartite reed electrode that contact 321 ' electrical connection on the other end and the female seat 32 '.Each comprises the bottom that is electrically connected with the copper facing electrode slice reed electrode 321,321 ', and the elastic spring that stretches out respectively from center bottom and both sides.Three elastic springs and the electrode 33 on the male 31 of reed electrode 321 are suitable, and when inserting in the female seat with the male on the charging module of another handcart of box lunch, three reed electrodes are clamped the electrode on the male of insertion and formed and are electrically connected.Mutual insulating between the electrode of two males 31,31 ', mutual insulating between the electrode of two female seats 32,32 '.
On copper facing electrode 34,34 ', also be provided with the connection screw 341,341 ' that inserts for the conducting wire of charging module 101 grades.Interface 351,351 ' on connection screw 341,341 ' and the housing 35 communicates and inserts for the conducting wire.
Inside and the housing 35 of preferred charging Connection Block 30 form as one.Make that so whole charging Connection Block is firmer.
It will be appreciated by those skilled in the art that, though be to have formed electrical connection by charging Connection Block string between the go-cart together, the power supply bus is serially connected, but each charging module between car and the car is (as shown in Figure 1) in parallel in the charging power supply bus that is connected in series, and the charging power supply bus portion of each car is exactly the connected node that this car charging module for power supply inserts.Some vehicle strings have several independent live parts to hang on the power supply bus with regard to being equivalent to together, are relation in parallel between them.
Fig. 5 shown when a plurality of handcarts serial connection is stacked together, and the charging Connection Block of each handcart is serially connected and is connected to the schematic diagram of feeder ear.In the figure, the feeder ear of power supply is by conventional ac-dc conversion device 50(for example 1500W, 2000W or 3000W) be connected with the charging Connection Block 30 of first handcart.
Fig. 6 has shown the schematic diagram of these ac-dc conversion device 50 external structures.(a) be the situation of band shell 500, (b) for removing the situation behind the shell 500.As shown in the figure, this device 50 also comprises female seat 501, AC-DC modular converter 504, switch 502, indicator light 503 etc.The AC-DC modular converter can adopt existing commercially available prod, the SP-320 series of the bright latitude in Taiwan company for example, and peak power output is 320W, the VD specification of selecting for use can be DC7.5V, DC12V, DC24V, DC27V.For avoiding obscuring with substantial portion of the present utility model, therefore repeat no more.
The following describes the method according to the batch charging of an execution mode of the utility model.
When some handcarts are stacked together charging time (the single vehicle principle too) as shown in Figure 8, the bus current detection module of each handcart all can detect the electric current of the power supply bus that is positioned at this car bottom.As shown in Figure 8, the electrode in the charging device (charging Connection Block) is installed in the vehicle bottom, and the bus of namely powering is arranged on the vehicle bottom.
The bus current detection module is according to the operating state that the testing result of power supply bus current is removed to control the DC step-down modular converter of self.In the present embodiment, adopt the index of " load limit electric current ".This index refers to the maximum load current value that the output of dc power supply can provide; DC power supply can normally be the load power supply when the actual loading electric current is less than or equal to this power source loads limiting current; when the actual loading electric current surpasses the maximum load current value that power supply can provide; power supply will start overload protection; power-off output this moment; load does not have power supply, just can not charge yet.By scheme shown in Figure 1, with the electric current maximum of the nearest detected power supply bus of charging module of dc power supply.When the bus current detection module detects that the power supply bus current that flows through vehicle bottom has reached or during very near the load limit electric current of front end 32V dc power supply, then close the step-down DC conversion chip of vehicle, the charging current of temporarily disconnected self can provide enough charging currents for the vehicle after this car to guarantee power supply.
Charging process to battery is to finish management and control by charging management chip automatically according to default parameter.Different charging management chip preset values may there are differences.For example, generally charging management chip can be operated in pre-charge state when cell voltage is lower than 3V, and by changing the parameter of charging management chip peripheral circuit, the control charging current is about about 20% of constant current charge electric current.When cell voltage is charged to when being higher than 3V, charging management chip will change the constant current charge process automatically over to.In the constant current charge process, it is invariable that charging current keeps, and the size of charging current can preestablish by the relevant parameter that the charging management chip peripheral circuit is set.
When cell voltage is charged to default Full Charge Capacity voltage (general lithium battery is made as 4.2V), charging management chip will change the constant voltage charge process automatically over to, in the constant voltage charge process, charging voltage is constant, charging current can descend gradually along with the carrying out of charging, when the constant voltage charge electric current drops to 10% left and right sides of constant current charge electric current, charging management chip will change halted state over to, and charging process is finished.
When this car current detection module detects that the charging that is positioned at this car has reached with power supply bus current (total current of the Vehicular charging after just being positioned at this car) or during very near the load limit of power supply, this car current detection module will be exported the step-down DC module that corresponding level removes to turn-off this car, the charging current of this car of temporarily disconnected is to guarantee that being positioned at this car vehicle afterwards has enough charging supply currents.If starting the charging power supply of this car at this moment is the charge management circuit power supply of this car with step-down DC conversion chip; just this car is charged; to cause the charging current of this car and the charging current stack of back vehicle; make bus current surpass the load limit of DC power supply; cause the DC power supply overload protection and powered-down output, then the vehicle of all connection chargings all can't be finished charging.
Vehicular charging after being positioned at this car enters into after the constant voltage charge process, and the bus current that flows through this car will descend successively.Because the charging current of all vehicles of back all is to flow through the charging of preceding vehicle with the metal bus electrode of powering, so the variation of the charging current of back vehicle just can be detected by the bus current detection module of preceding vehicle.The constant current charge stage flow through preceding vehicle charging with the electric current of power supply bus less than variation, and when certain handcart constant voltage charge, charging current can reduce gradually along with the carrying out of charging, and the vehicle current detection module that the variation of this electric current will be positioned at its front detects.
When this car bus current detection module detects the power supply bus current (not being the charging current of this car) that flows through this car and drops to the electric current that can give the charging of this car, this car bus current detection module is exported the step-down DC modular converter that corresponding level goes to control this car and is operated in step-down DC transition status, be the charge management circuit of this car (label among Fig. 1 1013,1023 for example, 1033 indications) provide+the 5V power supply, finished by charge management circuit the charging process of battery is controlled.Charge management circuit 1013 among Fig. 1,1023,1033 can be arranged at the electronic equipment internal of this car armrest portion, controls rechargeable battery powered to this car.
More than disclosed only be several specific embodiment of the present utility model.The utility model is not limited thereto, those skilled in the art according to its getable technological means equivalent variations that disclosure of the present utility model is made all should fall into protection range of the present utility model.
For example, in other execution modes, the output that also can make ac-dc conversion device 50 directly is 5V-6V, can directly give lithium cell charging, and this moment, the band of the vehicle step-down DC that enables EN did not need yet separately, got final product and replace with controllable electronic switch.
Claims (9)
1. chargeable mobile device, it is characterized in that, the charging Connection Block that is connected with described charging module that comprises body, is installed on the charging module on the body and installs at body, described charging Connection Block can be connected with the charging Connection Block of other described mobile device, wherein, described charging module comprises:
The bus current detection module is for detection of the power supply bus current that flows through described charging module, according to the charging current of the result's control that detects to this mobile device.
2. chargeable mobile device as claimed in claim 1, wherein said charging Connection Block comprises:
The housing of insulation is formed with the interface that inserts for conductor wire on the housing,
In the male of housing one end and the female seat of the other end, described male and female seat have electrode respectively, and
At the electrode slice that is electrically connected with a pair of described male and female seat respectively of described enclosure interior,
When folded mutually before and after the described mobile device, the male of the charging Connection Block of the mobile device at rear is connected on the female seat of charging Connection Block of the place ahead mobile device, thereby a plurality of described mobile devices are connected in series charging.
3. chargeable mobile device as claimed in claim 1 or 2, wherein, each described female seat comprises the reed electrode, the reed electrode comprises the bottom that is electrically connected with described electrode slice, with the elastic spring that stretches out respectively from described center bottom and both sides, the electrode of described elastic spring and described male is suitable, and when being inserted by the male of another charging Connection Block with the described female seat of box lunch, described reed electrode is clamped the electrode on the male of insertion and formed and is electrically connected.
4. chargeable mobile device as claimed in claim 1 or 2, wherein said charging module also comprises:
Battery charging management circuit, the power supply of management rechargeable battery.
5. chargeable mobile device as claimed in claim 3, wherein said charging module also comprises:
Battery charging management circuit, the power supply of management rechargeable battery.
6. chargeable mobile device as claimed in claim 1 or 2, wherein said charging module also comprises:
Controlled DC step-down module receives the control signal of described bus current detection module, provides charging current according to described control signal for rechargeable battery.
7. chargeable mobile device as claimed in claim 3, wherein said charging module also comprises:
Controlled DC step-down module receives the control signal of described bus current detection module, provides charging current according to described control signal for rechargeable battery.
8. chargeable mobile device as claimed in claim 4, wherein said charging module also comprises:
Controlled DC step-down module receives the control signal of described bus current detection module, provides charging current according to described control signal for rechargeable battery.
9. chargeable mobile device as claimed in claim 5, wherein said charging module also comprises:
Controlled DC step-down module receives the control signal of described bus current detection module, provides charging current according to described control signal for rechargeable battery.
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| CN 201320012637 CN203071613U (en) | 2013-01-10 | 2013-01-10 | Rechargeable mobile device |
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| CN 201320012637 CN203071613U (en) | 2013-01-10 | 2013-01-10 | Rechargeable mobile device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103580297A (en) * | 2013-01-10 | 2014-02-12 | 无锡知谷网络科技有限公司 | Mobile equipment and charging method thereof |
| WO2015043348A1 (en) * | 2013-09-30 | 2015-04-02 | 无锡知谷网络科技有限公司 | Frame structure and trolley using frame structure |
| EP3199422A4 (en) * | 2014-09-25 | 2017-09-20 | Chigoo Interactive Technology Co., Ltd. | Handcart bottom panel and handcart using said bottom panel |
| KR101827909B1 (en) * | 2013-10-16 | 2018-03-22 | 치구 인터랙티브 테크놀로지 씨오., 엘티디. | Supporting Structure, Player and Mobile Device Using Same |
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2013
- 2013-01-10 CN CN 201320012637 patent/CN203071613U/en not_active Expired - Lifetime
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| CN103580297A (en) * | 2013-01-10 | 2014-02-12 | 无锡知谷网络科技有限公司 | Mobile equipment and charging method thereof |
| US9780585B2 (en) | 2013-01-10 | 2017-10-03 | Chigoo Interactive Technology Co., Ltd. | Movable device and method of charging the same |
| CN103580297B (en) * | 2013-01-10 | 2015-11-18 | 无锡知谷网络科技有限公司 | Mobile device and charging method thereof |
| KR20160065184A (en) * | 2013-09-30 | 2016-06-08 | 치구 인터랙티브 테크놀로지 씨오., 엘티디. | Frame structure and trolley using frame structure |
| EP3053805A4 (en) * | 2013-09-30 | 2017-05-31 | Chigoo Interactive Technology Co., Ltd. | Frame structure and trolley using frame structure |
| WO2015043348A1 (en) * | 2013-09-30 | 2015-04-02 | 无锡知谷网络科技有限公司 | Frame structure and trolley using frame structure |
| US9809243B2 (en) | 2013-09-30 | 2017-11-07 | Chigoo Interactive Technology Co., Ltd. | Frame structure and trolley using frame structure |
| KR101878958B1 (en) * | 2013-09-30 | 2018-07-16 | 치구 인터랙티브 테크놀로지 씨오., 엘티디. | Frame structure and trolley using frame structure |
| KR101827909B1 (en) * | 2013-10-16 | 2018-03-22 | 치구 인터랙티브 테크놀로지 씨오., 엘티디. | Supporting Structure, Player and Mobile Device Using Same |
| EP3199422A4 (en) * | 2014-09-25 | 2017-09-20 | Chigoo Interactive Technology Co., Ltd. | Handcart bottom panel and handcart using said bottom panel |
| JP2017536280A (en) * | 2014-09-25 | 2017-12-07 | ▲無▼▲錫▼知谷▲網▼▲絡▼科技有限公司Ｃｈｉｇｏｏ Ｉｎｔｅｒａｃｔｉｖｅ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． | Dolly bottom plate and dolly employing the bottom plate |
| KR101899586B1 (en) * | 2014-09-25 | 2018-09-17 | 치구 인터랙티브 테크놀로지 씨오., 엘티디. | Handcart bottom panel and handcart using said bottom panel |
| US10214231B2 (en) | 2014-09-25 | 2019-02-26 | Chigoo Interactive Technology Co., Ltd. | Trolley baseplate and trolley using the same |
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