CN207968010U - A kind of extraction-type action cell managing device - Google Patents
A kind of extraction-type action cell managing device Download PDFInfo
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- CN207968010U CN207968010U CN201820353241.8U CN201820353241U CN207968010U CN 207968010 U CN207968010 U CN 207968010U CN 201820353241 U CN201820353241 U CN 201820353241U CN 207968010 U CN207968010 U CN 207968010U
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- cell managing
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Abstract
The utility model discloses a kind of extraction-type action cell managing device, includes an input protection circuit, a battery charging group device, a charge path group device, a battery apparatus, a monitoring device, a buck-boost type converter, a microprocessor and a wireless communication module.Wherein the battery apparatus has the first battery and the second battery；The battery charging group device is correspondingly provided with the first battery charger and the second battery charger；At least two independent slots are equipped in extraction-type action cell managing device, first battery and the second battery are independent grafting and correspond among two slot, and are the battery supply function mode of heat insertion.The utility model can effectively increase the terminal device for not operation system of software, can further monitor the state of charge of the terminal, and the circuit device of a kind of action electric power station for communicating and being controlled can be executed in a manner of wireless transmission.
Description
Technical field
The utility model is related to a kind of extraction-types to take action cell managing device, especially one kind applied to no software operation system
The power supply of the terminal installation of system is supplied, and the action cell managing device that can be extracted for battery.
Background technology
In the prior art, about the technology of Power Supply Monitoring it is all non-to wireless transmission method directly go monitoring with control eventually
The power supply status of end device, be using can not removable battery Mobile electric power power supply occupation mode, with as terminal installation
Power supply supply and monitoring, need to be improved.
Utility model content
The utility model discloses a kind of extraction-type action cell managing device, can effectively increase and no software is grasped
Make the terminal device of system, can further monitor the state of charge of the terminal installation and be controlled, such as can monitor
When the electricity of the terminal device (such as printer) will be insufficient, by the wireless communication module in the utility model with wireless
Transmission sends a control signal, controls the printer and executes the operating mode of power saving, or the power supply is closed；And
For the hot Insertion action at least two batteries so that extraction-type action cell managing device can maintain always power supply
The action electric power station of power supply state.
The extraction-type action cell managing device of the utility model, is the terminal installation for applying to no operation system of software
On, extraction-type action cell managing device includes：One input protection circuit receives a direct-current input power supplying；One battery charges
Group device is coupled to the input protection circuit, and is inserted into interface group device equipped with a heat；One charge path group device, is coupled to
The battery charging group device, to provide the path of battery charging；One monitoring device is coupled to the charge path group device, uses
To monitor the charged state of the battery charging group device and the power supply use state of the terminal installation；One buck-boost type converter,
It is coupled to the monitoring device, and the DC output power of different voltages level is provided, which is coupled to the end again
End device；One microcontroller is coupled to the battery charging group device, monitoring device and the buck-boost type converter；One channel radio
Believe module, be coupled to the microcontroller, extraction-type action cell managing device is enable to execute nothing with external intelligent device
The data transmission of line communication；And a battery apparatus, it is coupled to the battery charging group device, has at least two in the battery apparatus
A battery；Wherein, at least two independent slots, at least two battery are equipped in this kind of extraction-type action cell managing device
It is plugged in respectively among at least two independent slot for correspondence.
In one embodiment, wherein the battery charging group device includes：First battery charger, at least two battery
In a battery mutually couple, first battery charger be equipped with one heat be inserted into interface, for the heat insertion interface group device in connecing
Mouthful；And second battery charger, it is mutually coupled with another battery at least two battery, which is equipped with one
Heat is inserted into interface, and the interface in interface group device is inserted into for the heat.
In one embodiment, wherein the charge path group device includes one first charge path device and one second charging circuit
Diameter device；First charge path device correspondence is coupled to first battery charger；Second charge path device correspondence is coupled to this
Second battery charger.
In one embodiment, extraction-type action cell managing device, further includes having：One first analog/digital turns
Parallel operation is coupled between the microcontroller and first battery charger, receives the control of the microcontroller, and further controls
The charge control of first battery charger；And one second analog/digital converter, it is coupled to the microcontroller and second electricity
Between electrolytic battery charger, receive the control of the microcontroller, and further controls the charge control of second battery charger.
In one embodiment, extraction-type action cell managing device, further includes having：One buck convertor, coupling
It is connected at least two battery, the monitoring device and is coupled to the buck-boost type converter, to export a plurality of DC power supplies,
It is supplied to DC power supply required inside extraction-type action cell managing device；Wherein, which further includes setting
There is a spare buck convertor, is used as stand-by power supply.
In one embodiment, wherein the wireless communication module includes：One RS232 connectors, are coupled to the microcontroller,
To provide the data communication of RS232 communication formats；One WiFi wireless modules, are coupled to the microcontroller, to provide
The data transmission of WiFi wireless communications；And a bluetooth radio module, it is coupled to the microcontroller, to provide Bluetooth wireless communication
Data transmission.
In one embodiment, wherein the wireless communication module further includes having a Minimized USB connector, is coupled to the microcontroller
Device, to provide the connector of micro USB format, for user's grafting.
In one embodiment, extraction-type action cell managing device further includes being equipped with an outside switching switch, coupling
It is connected to the microcontroller, is to provide user and extraction-type action cell managing device is directly switched by outside, to export difference
The DC output power of voltage value.
In one embodiment, the extraction-type is taken action cell managing device, further includes at least two independent being inserted at this
In slot, correspondence is respectively equipped with a battery contact, is to be electrically connected at least two battery.
In one embodiment, the extraction-type is taken action cell managing device, further includes at least two independent being inserted at this
In slot, correspondence is respectively equipped with a tenon, by least two battery, to be sticked among at least two independent slot.
The utility model discloses a kind of extraction-type action cell managing device, is inserted by being able to carry out heat for action battery
The action entered, and the terminal device that can be not provided with operation system of software for one execute supply and the power supply shape of power supply
The monitoring of state, make the power supply of the terminal device using it is upper more efficiently, reach economize on electricity, it is green can and environmentally friendly purpose.
Description of the drawings
Fig. 1 is the circuit box schematic diagram of the utility model embodiment；
Fig. 2 is the further circuit box schematic diagram in the utility model embodiment；
Fig. 3 is the perspective view of the utility model embodiment battery and extraction-type action cell managing device；
Fig. 4 is the perspective view of the utility model embodiment extraction-type action cell managing device；
Fig. 5 is the front-view schematic diagram of the utility model embodiment extraction-type action cell managing device.
Specific implementation mode
The utility model discloses a kind of extraction-type action cell managing device, is inserted by being able to carry out heat for action battery
The action entered, and the terminal device that can be not provided with operation system of software for one execute supply and the power supply shape of power supply
The monitoring of state, make the power supply of the terminal device using it is upper more efficiently, reach economize on electricity, it is green can and environmentally friendly purpose.
It will hereinafter use and various exemplary embodiments are more fully described, and in alterations refering to alterations
Middle some exemplary embodiments of displaying.However, the concept of the utility model may be embodied in many different forms, and not
It should be interpreted that and be only limitted to exemplary embodiments set forth herein.Specifically, these exemplary embodiments are provided and make this
Utility model will be scope that is detailed and complete, and the utility model concept will fully being conveyed to those who familiarize themselves with the technology.All
In schema, the size of battery, managing device and circuit box and opposite size can be lavished praise on oneself in order to clear.Similar number
Word indicates similar assembly always.
Although should be understood that may use term herein, inside and outside, left side, right side, front side or rear side etc. are each to describe
The position of kind component, but these components should not be limited by these terms.These terms be clearly distinguish a component with it is another
One component and its different installation positions.Therefore, left side (or front side) component being discussed herein below can be described as right side (or rear side) group
Teaching of the part without departing from the utility model concept；Same "upper" used herein, "lower", " upside " or " downside " are only to say
Bright component is not necessarily the correspondence above and below each component in the relative position relation in automobile.As used herein " the
The terms such as one " or " second ", are only to clearly distinguish a component and another component, not necessarily there are one between the two
Fixed ordinal relation.As used herein, term " and/or " include associated listing any one of project and one or more
All combinations.Also, may describe to have multiple components using term " group device ", " a plurality of " or " multiple " herein, but
These plurality of element are not limited in being implemented with two, three or four and more than four component counts indicate to be implemented
Technology.
Fig. 1 is the circuit box connection diagram of the utility model, the extraction-type action battery management dress of the utility model
10 are set, is applying to a terminal installation without operation system of software, actually can be such as one for the terminal installation
Printer 5, needs declarant, is only embodiment explanation in this, the DC load that the utility model can use is not to beat
Print machine is limitation.On the other hand, in practice the utility model extraction-type action cell managing device 10 and the terminal
Device can take the mode that wired connection is either wirelessly connected, and extraction-type action cell managing device 10 is allowed to be filled with the terminal
Set phase interconnections.Even, the extraction-type action cell managing device 10 of the utility model further can be with external users
Used intelligent handheld device, which executes, is wirelessly transferred online mode, executes connection line operation, and providing user can be with certainly
The mobile phone of body executes monitoring and manages the terminal installation.And the utility model may be particularly applicable to one without operation system of software
On the terminal installation of (such as one without Window, iOS or Android).
The utility model extraction-type action cell managing device be include an input protection circuit 11, a battery charging group
Device 12, a charge path group device 13, a battery apparatus 14, a monitoring device 17, a buck-boost type converter 18, one are micro-
Processor 15 and a wireless communication module 16.Wherein, input protection circuit 11 receives a direct-current input power supplying 1, direct current input electricity
Source 1 is mainly the external direct current provided.Battery charging group device 12 is coupled to input protection circuit 11, and in battery
It is equipped with a heat in charging group device 12 and is inserted into interface group device 19, for executing the hot Insertion action of action battery.Described fills
Power path group device 13 is to be coupled to battery charging group device 12, to provide the path of action battery charging.Monitoring device 17
It is coupled to the charge path group device 13, to monitor the charged state and the terminal installation (example of the battery charging group device 12
Such as：Printer 5) power supply use state.Battery apparatus 14 is coupled to battery charging group device 12, the utility model battery
There are at least two batteries in group device 14, for example, by using the embodiment party of the first battery 141 and the second battery 142 as shown in Figure 2
Formula, so, the utility model are not limited thereto system, user when according to self-demand can monitor and be implemented with first, second,
The battery using state of third, the 4th to the 5th battery etc.；And 141 and second electricity of the first battery described in the utility model
Pond 142 is for separate action battery.
Buck-boost type converter 18 is then coupled to monitoring device 17 and provides the DC output power of different voltages level
3, the DC output power 3 is further coupled to the terminal installation, provides the DC power supply needed for the terminal installation.It is described
Different voltages level DC output power 3, in can be to switch such as DC12V, DC19V and DC24V in practice,
Either by the DC output power 3 close (Cut Off), must the person of emphasizing, different voltages value described herein, only this reality
With novel one for example, user according to the loading demand of itself when can have additional DV15V or DC3V to DC5V etc.
Different voltages level DC output power, the utility model is not limited thereto system.Microcontroller 15 is to be coupled to simultaneously
Battery charging group device 12, monitoring device 17 and buck-boost type converter 18, to control battery charging group device 12, monitoring
The circuit of device 17 and buck-boost type converter 18 operates.Wireless communication module 16 is coupled to microcontroller 15, effect
Be enable the extraction-type of the utility model take action cell managing device 10 and external intelligent device (such as：It refer to monitoring
The smart mobile phone of person or user, smartwatch or tablet computer) to execute the long-range prison of data transmission execution of wireless communication
Control or remote control.
And by embodiment described in the utility model, can be efficiently performed in practice when terminal installation institute
When the electricity for the printer 3 stated is less than 10%, it can notify whether user needs to execute in a manner of being wirelessly transferred and notify
In addition shutdown or the switching of relevant battery saving mode can be led to printer again by way of RS232 transmission and execute closing running.
Further, since the action battery of the utility model is the pattern of substituting that hot can be inserted into, therefore, the extraction-type action of the utility model
Cell managing device can allow terminal installation to maintain the state of direct current power supply always, when a battery is i.e. by out of power
When, which can be pulled out and separately be charged, and continues to power by another battery, if battery out of power again later, then
Another primary cell is executed to replace.
The further explanation of the utility model is referring to Fig. 2, disclose the inside electricity of extraction-type action cell managing device 100
Road square connection diagram, be the battery apparatus 14 described in Fig. 1 is further disclosed be include the first battery 141 and the second electricity
Pond 142, it includes one first battery charger 121 and one second electricity also further to disclose the battery charging group device 12 to be
Electrolytic battery charger 122.First battery charger 121 is coupled with 141 phase of the first battery, and one is equipped in the first battery charger 121
Heat is inserted into interface 191, is one of the interface in the heat insertion interface group device 19 in the Fig. 1；And second battery charger 122
It is to be coupled with 142 phase of the second battery, the second battery charger 122 is also equipped with a heat and is inserted into interface 192, is similarly heat and is inserted into interface
One of interface in group device 19.The utility model by the first battery charger 121 and the second battery charger 122 charging
Effect can be directed to the first battery 141 and the second battery 142 executes charging, the DC power supply provided by outside, when the first electricity
When pond 141 or the second 142 out of power of battery, can also DC charging be executed to the battery.First battery 141 and/or second simultaneously
The direct current of battery 142 can also pass through battery charging group device 12, charge path group device 13, monitoring device 17 and buck
The connection relation of code converter 18 provides DC power supply and gives the terminal installation (such as printer 5), and can be by the monitoring device
17 learn the power supply use state of the terminal installation.
In Fig. 2, the charge path group device 13 includes one first charge path device 131 and one second charge path device
132；First charge path device 131 correspondence is coupled to the first battery charger 121；The second charge path device
132 correspondences are coupled to the second battery charger 122.Charge path group device 13 is providing needed for the charging of the utility model battery
The path wanted, while being also to provide required battery discharge path, and put for different battery chargings or battery for user
The demand of electricity selects.Extraction-type action cell managing device 100 further includes having one first analog/digital converter 151 and one
Second analog/digital converter 152；First analog/digital converter 151 is coupled to microcontroller 15 and the first battery charger
It is the charge/discharge control for receiving the control of microcontroller 15, and further controlling the first battery charger 121 between 121；
Second analog/digital converter 152 is coupled between microcontroller 15 and the second battery charger 122, receives microcontroller 15
Control, and further control the second battery charger 122 charge/discharge control.
Fig. 2 extraction-types action cell managing device 100 further includes having a buck convertor 182 to be coupled to the first battery
141 and second battery 142, monitoring device 17 and it is coupled to buck-boost type converter 18, the buck convertor 182 is to use
To export a plurality of DC power supplies, it can include an an internal dc source A and USB power source B, be available to the extraction-type row
The required DC power supply in 100 inside of dynamic cell managing device can about the internal dc source A in practice
It is single a chip corresponding for each circuit in inside, the power supply needed for each chip, e.g. DC+3V or DC+ is provided
5V etc..
In one embodiment, which further includes being additionally provided with a spare buck convertor, as
Stand-by power supply is used.Buck-boost type converter 18 is coupled to microcontroller 15, then is the electricity for receiving the microcontroller 15 and being exported
Pressure selection signal C receives microcontroller 15 and selects control for the voltage value of the DC output power 3 in turn.Further include in Fig. 2
It is to be coupled directly to microcontroller 15 equipped with an outside switching switch 153, microcontroller 15 is made to export Voltage selection signal C,
User can be provided, extraction-type action cell managing device 100 is directly switched by outside, use the direct current of output different voltages value
Out-put supply.In actual use, the external switching switch 153 can be a thumb-acting switch, user can be allowed to cut
The different output demand etc. of DC12, DC15V, DC19V or DC24V is changed, Voltage selection signal C can also be to hold what is more
One power supply of row closes the signal of (Power Off) so that extraction-type takes action cell managing device 100 can be by terminal installation
Power supply is closed.
In Fig. 2 the wireless communication module include a Minimized USB connector 161, a RS232 connectors 162, a WiFi without
Wire module 163 and a bluetooth radio module 164.Wherein RS232 connectors 162 are coupled directly to microcontroller 15, to carry
For the data communication of RS232 communication formats；WiFi wireless modules 163 are also coupled to microcontroller 15, to provide
The data transmission of WiFi wireless communications；Bluetooth radio module 164 is also to be coupled to the microcontroller 15, wireless to provide bluetooth
The data transmission of communication.By the wireless communication module 16 be embedded in or it is interior be set to the utility model extraction-type take action battery
Among managing device 100, it can effectively reach to monitor terminal device (being, for example, printer 5) itself state of charge, pass through this
The embodiment of wireless communication module 16 in utility model also can be by the hand-held device of user (in terms of such as smartphone or tablet
Calculation machine) wireless transmission send one control signal, can further control printer 5 execute power saving running mould
Formula, or the DC power supply that the printer 5 is connected are closed.The Minimized USB connector 161 is coupled to microcontroller
15, can be for the device of user's grafting USB specification to provide the connector of micro USB format, and become by the voltage-dropping type
The USB power source B that parallel operation 182 is exported is connected to Minimized USB connector 161.
Fig. 3 discloses the extraction-type action cell managing device 100 and the first battery 141 and the second battery of the utility model
The perspective view of 142 actual implementation device, for the embodiment of a citing, the utility model practical structures are not limited thereto
System.It is disclosed in Fig. 4 in extraction-type action cell managing device 100 and is equipped at least two independent slots 21,22, the first battery
141 and second battery 142 be correspondence be plugged in respectively among at least two independent slot 21,22.And this at least two
In a independent slot 21,22, correspondence be respectively equipped with a battery contact 23,24, to the first battery 141 and the second battery
142 are electrically connected with each other.Further include that correspondence is respectively equipped with tenon in the slot 21,22 of extraction-type action cell managing device 100
25,26, among by the first battery 141 and the second battery, being sticked in at least two independent slot 21,22, that is,
Can be directly plugged in slot 21,22 for the first battery 141 and the second battery 142, and be subject to by tenon 25,26 it is fixed,
The practical structure for double action of tenon 25,26, therefore user also can be directly by extracting the first battery in slot 21,22
141 and second battery 142.
The implementation that Fig. 5 discloses the external connection panel 101 of the utility model extraction-type action cell managing device 100 illustrates
Be intended to, this embodiment be only one for example, the external connection panel 101 of the utility model state sample implementation, when not as
Limitation.Include that DATA, DC-OUT1, DC-OUT2, DC-IN of USB and a switching switch (Switcher) in Fig. 5, with
Composition as external connection panel 101 is schematically illustrate.
In conclusion the utility model discloses a kind of extraction-type action cell managing device, via the electricity for capableing of heat insertion
Pond acts on, and effectively increases the terminal device for not no operation system of software itself, can further monitor the terminal
State of charge and be controlled, if such as monitor terminal device (such as printer) itself electricity when will be insufficient, lead to
The wireless communication module crossed in the utility model sends a control signal with what is be wirelessly transferred, controls printer execution
The operating mode of power saving, or the power supply is closed.It in addition can also be using the wired connection mode and terminal device of RS232
Printer phase interconnections.And the utility model extraction-type action cell managing device be using can removable battery one electricity
The Mobile electric power pattern at power station, the structure of device itself are the set-up mode that user can carry；And this electric power station can be tieed up always
Hold the state of electricity, when power supply deficiency, user can extract one of battery, then substitute merging and filled full one
Battery can maintain this electric power station to maintain the state of electricity at any time, obvious the utility model have extremely strong novelty, into
The patent requirements such as step property and practicability.
The utility model illustrates the content, only preferred embodiment for example, when this reality cannot be limited with it
With novel protected range, any correlation local variation, small modification amendment or increased technology, or for numerically or position
Variation set etc., the range protected without departing from the utility model.
Claims (10)
- The cell managing device 1. a kind of extraction-type is taken action, which is characterized in that extraction-type action cell managing device is to apply to On a terminal installation without operation system of software, extraction-type action cell managing device includes：One input protection circuit receives a direct-current input power supplying；One battery charging group device is coupled to the input protection circuit, and the battery charging group device is equipped with a heat insertion and connects Mouth group device；One charge path group device, is coupled to the battery charging group device, which charges to provide battery Path；One monitoring device, is coupled to the charge path group device, and the monitoring device is monitoring filling for the battery charging group device The power supply use state of electricity condition and the terminal installation；One buck-boost type converter is coupled to the monitoring device, and the buck-boost type converter provides different voltages level DC output power, the DC output power are coupled to the terminal installation again；One microcontroller is coupled to the battery charging group device, the monitoring device and the buck-boost type converter；One wireless communication module is coupled to the microcontroller, which makes extraction-type action cell managing device The data transmission of wireless communication can be executed with external intelligent device；AndOne battery apparatus is coupled to the battery charging group device, has at least two batteries in the battery apparatus；Wherein, at least two independent slots are equipped in extraction-type action cell managing device, which is pair It should be plugged in respectively among at least two independent slot.
- The cell managing device 2. extraction-type as described in claim 1 is taken action, which is characterized in that the wherein battery charging group device Including：A battery in first battery charger, at least two battery mutually couples, which is equipped with a heat It is inserted into the interface that interface is inserted into as the heat in interface group device；AndAnother battery in second battery charger, at least two battery mutually couples, which is equipped with one Heat is inserted into the interface that interface is inserted into as the heat in interface group device.
- The cell managing device 3. extraction-type as claimed in claim 2 is taken action, which is characterized in that the wherein charge path group device Including one first charge path device and one second charge path device；First charge path device correspondence is coupled to first battery and fills Electric appliance；Second charge path device correspondence is coupled to second battery charger.
- The cell managing device 4. extraction-type as claimed in claim 2 is taken action, which is characterized in that further include：One first analog/digital converter is coupled between the microcontroller and first battery charger, and first simulation/ Digital quantizer receives the control of the microcontroller, and first analog/digital converter further controls first battery The charge control of charger；AndOne second analog/digital converter is coupled between the microcontroller and second battery charger, and second simulation/ Digital quantizer receives the control of the microcontroller, and second analog/digital converter further controls second battery The charge control of charger.
- The cell managing device 5. extraction-type as claimed in claim 2 is taken action, which is characterized in that further include having：One buck convertor is coupled at least two battery, the monitoring device and is coupled to the buck-boost type converter, should Buck convertor is supplied to required straight inside extraction-type action cell managing device exporting a plurality of DC power supplies Galvanic electricity source；Wherein, which further includes a spare buck convertor.
- The cell managing device 6. extraction-type as claimed in claim 2 is taken action, which is characterized in that the wherein wireless communication module packet It includes：One RS232 connectors, are coupled to the microcontroller, and the RS232 connectors are logical to the data for providing RS232 communication formats Letter transmission；One WiFi wireless modules, are coupled to the microcontroller, the WiFi wireless modules to provide WiFi wireless communication data Transmission；AndOne bluetooth radio module is coupled to the microcontroller, and the bluetooth radio module is providing the data of Bluetooth wireless communication Transmission.
- The cell managing device 7. extraction-type as claimed in claim 6 is taken action, which is characterized in that wherein the wireless communication module is also Include a Minimized USB connector, be coupled to the microcontroller, the Minimized USB connector is providing the company of micro USB format Device is connect, for user's grafting.
- The cell managing device 8. extraction-type as claimed in claim 2 is taken action, which is characterized in that further include that an outside switching is opened Pass, is coupled to the microcontroller, and outside switching switch provides user and directly switches extraction-type action cell tube by outside Device is managed, to export the DC output power of different voltages value.
- The cell managing device 9. extraction-type as claimed in claim 2 is taken action, which is characterized in that further include this at least two solely The corresponding battery contact being respectively equipped in vertical slot, the battery contact are to be electrically connected at least two battery.
- The cell managing device 10. extraction-type as claimed in claim 2 is taken action, which is characterized in that further include this at least two The corresponding tenon being respectively equipped in independent slot, the tenon to by least two battery snap-in in this at least two solely Among vertical slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353241.8U CN207968010U (en) | 2018-03-15 | 2018-03-15 | A kind of extraction-type action cell managing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820353241.8U CN207968010U (en) | 2018-03-15 | 2018-03-15 | A kind of extraction-type action cell managing device |
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| CN207968010U true CN207968010U (en) | 2018-10-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112166539A (en) * | 2019-09-26 | 2021-01-01 | 深圳市大疆创新科技有限公司 | Battery management device, method and system |
-
2018
- 2018-03-15 CN CN201820353241.8U patent/CN207968010U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112166539A (en) * | 2019-09-26 | 2021-01-01 | 深圳市大疆创新科技有限公司 | Battery management device, method and system |
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