CN103219485B - Battery unit and portable power source - Google Patents
Battery unit and portable power source Download PDFInfo
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- CN103219485B CN103219485B CN201310105187.7A CN201310105187A CN103219485B CN 103219485 B CN103219485 B CN 103219485B CN 201310105187 A CN201310105187 A CN 201310105187A CN 103219485 B CN103219485 B CN 103219485B
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- battery unit
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- electric contact
- control module
- contact
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a kind of battery unit and there is the portable power source of this battery unit, described battery unit comprises the first shell, battery, electrode contact, first group of electric contact and second group of electric contact, wherein, the first shell comprises the first outer surface and the second outer surface that are in opposite face position; Described first group of electric contact is arranged at first surface, and second group of electric contact is arranged at the second outer surface; Described first group of electric contact and second group of electric contact are electrically connected with battery respectively by described electrode contact; Be grouped together by snap or pin mode or Tenon mode or magnetic attraction mode between battery unit described in adjacent two, and first group of electric contact of second of a battery unit group of electric contact and another battery unit maintains and conduct relation, between battery unit, form in parallel or series connection.<!--1-->
Description
Technical field
The present invention relates to technical field of electronic products, particularly a kind of battery unit and portable power source.
Background technology
At present, on the market for the portable power source of digital product, generally be made up of shell, control circuit, charging inlet, output interface, battery electrode contact, battery compartment, battery, and all adopt the rechargeable battery core of fixed qty to power, the capacity of its electricity is not from hundreds of MAH to several ten thousand MAHs etc., when capacity is larger, volume is also larger.But user is different to the demand of the charge capacity of portable power source in various situations, but immobilize due to the charge capacity of portable power source, need to configure the different portable power source of several charge capacity to adapt to the application under different situation.Major part portable power source is non-dismountable, cannot change or increase and decrease battery, after control circuit damages or single battery core damages, may scrap by whole portable power source.Above situation causes the use inconvenience of portable power source, the shortcomings such as cost increases, management trouble.
Summary of the invention
Main purpose of the present invention is to provide a kind of battery unit, and the electricity or the output voltage that are intended to the battery pack that realization is combined into by battery unit are adjustable.
To achieve these goals, the invention provides a kind of battery unit, described battery unit comprises the first shell, battery, electrode contact, first group of electric contact and second group of electric contact,
Wherein, the first shell comprises the first outer surface and the second outer surface that are in opposite face position;
Described first group of electric contact is arranged at first surface, and second group of electric contact is arranged at the second outer surface;
Described first group of electric contact and second group of electric contact are electrically connected with battery respectively by described electrode contact;
Be grouped together by snap or pin mode or Tenon mode or magnetic attraction mode between battery unit described in adjacent two, and first group of electric contact of second of a battery unit group of electric contact and another battery unit maintains and conduct relation, between battery unit, form in parallel or series connection.
Preferably, described battery unit also comprises for controlling the adjacent two battery unit combination locking of relation or the first switch elements of unblock.
Preferably, described battery unit also comprises the second switch element of the relation that conducts for controlling first group of electric contact and electrode contact; Described battery unit also comprises the 3rd switch element of the relation that conducts for controlling second group of electric contact and electrode contact.
Preferably, described battery unit also comprises the wireless charging circuit for carrying out wireless charging.
The present invention also provides a kind of portable power source, and this portable power source comprises control module and at least one battery unit, and described control module comprises second housing, the 3rd group of electric contact and the control circuit for controlling battery charging and discharging,
Wherein, described battery unit comprises the first shell, battery, electrode contact, first group of electric contact and second group of electric contact,
First shell comprises the first outer surface and the second outer surface that are in opposite face position;
Described first group of electric contact is arranged at first surface, and second group of electric contact is arranged at the second outer surface;
Described first group of electric contact and second group of electric contact are electrically connected with battery respectively by described electrode contact;
Be grouped together by snap or pin mode or Tenon mode or magnetic attraction mode between battery unit described in adjacent two, and first group of electric contact of second of a battery unit group of electric contact and another battery unit maintains and conduct relation, between battery unit, form in parallel or series connection;
Described second housing comprises one the 3rd outer surface;
Described 3rd group of electric contact is positioned at described 3rd outer surface;
Described control circuit is positioned at second housing, and is electrically connected with the 3rd group of electric contact;
Described control module and battery unit are grouped together by snap or pin mode or Tenon mode or magnetic attraction mode, and are maintained by first group of electric contact of the 3rd of described control module the group of electric contact and a battery unit and conduct relation.
Preferably, described control module also comprises for controlling this control module and described battery unit combines the locking of relation or the 4th switch element of unblock.
Preferably, described control module also comprises for controlling the 5th switch element of the relation that conducts of the 3rd group of electric contact and control circuit.
Preferably, described control module also comprises the 6th switch element for adjusting output current and voltage.
Preferably, described second housing also comprises the 4th outer surface being positioned at described 3rd outer surface opposite face, and described control module also comprises the 4th group of electric contact being positioned at described 4th outer surface, and the 4th group of electric contact is electrically connected with described control circuit;
Control module described in adjacent two is grouped together by snap or pin mode or Tenon mode or magnetic attraction mode, and the 4th group of electric contact of the 4th of a control module the group of electric contact and another control module maintains and conduct relation, carry out communication or delivery of electrical energy for adjacent two control modules.
Preferably, described control module also comprises the wireless charging circuit for carrying out wireless charging.
Battery pack provided by the invention is fixed by two adjacent battery units being carried out combination, and by first group of electric contact and second group of electric contact, two adjacent battery units is formed in parallel or series connection, thus changes capacity or the output voltage of battery pack.Therefore the structure of battery unit, electric connection mode and compound mode can be realized standardization and modularization by the present invention, multiple battery unit can carry out combination in any easily, and then reaches the electricity of the battery pack be combined into by battery unit or the adjustable object of output voltage.Owing to being connected by electrical contact between battery unit, complete electrical connection while physical combination completing between battery unit, do not need dismounting shell, by instrument or article or other materials, only with simple manual operations, very convenient.Battery unit or the battery pack be combined into by battery unit can use as the reference power supply of other electronic equipments, especially mobile electronic product and digital equipment.The standardization of product and modularization reduce the complexity of product, reduce production cost, reduce use cost, reduce repair and upgrade cost, and are conducive to large-scale production.
Accompanying drawing explanation
Fig. 1 is the structural representation in battery unit one embodiment of the present invention after battery unit combination;
Fig. 2 is the structural representation of battery unit one embodiment of the present invention;
Fig. 3 is internal circuit configuration schematic diagram in battery unit one embodiment of the present invention;
Fig. 4 is internal circuit configuration schematic diagram in another embodiment of battery unit of the present invention;
Fig. 5 is a viewing angle constructions schematic diagram of control module in portable power source one embodiment of the present invention;
Fig. 6 is another viewing angle constructions schematic diagram of control module in portable power source one embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of battery unit.
Referring to figs. 1 through Fig. 4.
Fig. 1 is the structural representation in battery unit one embodiment of the present invention after battery unit combination;
Fig. 2 is the structural representation of battery unit one embodiment of the present invention;
Fig. 3 is internal circuit configuration schematic diagram in battery unit one embodiment of the present invention;
Fig. 4 is internal circuit configuration schematic diagram in another embodiment of battery unit of the present invention.
The battery unit 1 that the present embodiment provides comprises the first shell 10, battery 20, electrode contact 30, first group of electric contact 40 and second group of electric contact 50,
Wherein, the first shell 10 comprises the first outer surface 11 and the second outer surface 12 being in opposite face position;
Described first group of electric contact 40 is arranged at first surface 11, and second group of electric contact 50 is arranged at the second outer surface 12;
Described first group of electric contact 40 and second group of electric contact 50 are electrically connected with battery 20 respectively by described electrode contact 30;
Be grouped together by snap or pin mode or Tenon mode or magnetic attraction mode between battery unit described in adjacent two, and second of a battery unit group of electric contact 50 maintains with first group of electric contact 40 of another battery unit and conduct relation, form in parallel between battery unit or connect.
In the present embodiment, adjacent two battery units carry out combination by snap and are fixedly connected with, and position that such as can be corresponding on the first outer surface 11 of the first shell 10 of battery unit and the second outer surface 12 arranges catch flanges or snap-fit grooves.Two described battery units are put together, with the first outer surface 11 of the second outer surface 12 of a battery unit and another battery unit for faying face, the catch flanges arranged by the second outer surface 12 of a battery unit or the snap-fit grooves of snap-fit grooves and the first outer surface 11 of another battery unit or catch flanges are coordinated, and being fixed with another battery unit by a battery unit is connected.And second of a battery unit group of electric contact 50 is contacted with first group of electric contact 40 of another battery unit extremely together, thus complete the electrical connection of two battery units.
It should be noted that in the present embodiment, above-mentioned first group of electric contact 40 only can be connected power supply with second group of electric contact 50, also can connect power supply, control signal and data-signal etc.Two battery units, except using the compound mode of buckle structure, can also select one of following several compound mode: pin connection, magnet suction and joinery and its construction.Adopt during the compound mode of magnet suction and need respectively to insert a magnet in a battery unit, another battery unit correspondence position inserts a magnet or a ferrimagnet, and two battery units are grouped together by the suction by magnet.
Battery pack provided by the invention is fixed by two adjacent battery units being carried out combination, and by first group of electric contact 40 and second group of electric contact 50, two adjacent battery units is formed in parallel or series connection, thus changes capacity or the output voltage of battery pack.Therefore the structure of battery unit, electric connection mode and compound mode can be realized standardization and modularization by the present invention, multiple battery unit can carry out combination in any easily, and then reaches the electricity of the battery pack be combined into by battery unit or the adjustable object of output voltage.Owing to being connected by electrical contact between battery unit, complete electrical connection while physical combination completing between battery unit, do not need dismounting shell, by instrument or article or other materials, only with simple manual operations, very convenient.
In one embodiment, when forming parallel relationship between battery unit, in battery unit, first group of electric contact 40 and second group of electric contact 50 specifically can refer to Fig. 3 with the annexation of electrode contact 30.In the present embodiment, first group of electric contact 40 comprises the first electrical contact 40a and the second electrical contact 40b, and second group of electric contact 50 comprises the 3rd electrical contact 50a and the 4th electrical contact 50b, and electrode contact 30 comprises the first electrode contact 30a and the second electrode contact 30b.Wherein the first electrical contact 40a and the 3rd electrical contact 50a is all electrically connected with the first electrode contact 30a, this first electrode contact 30a is connected with the positive pole of battery 20, second electrical contact 40b and the 4th electrical contact 50b is all electrically connected with the second electrode contact 30b, and this second electrode contact 30b is connected with the negative pole of battery 20.When two battery units are incorporated into together, be connected with the 3rd electrical contact 50a of the second battery unit by the first electrical contact 40a of the first battery unit, second electrical contact 40b of the first battery unit 1 is connected with the 4th electrical contact 50b of the second battery unit, thus is formed by two battery units in parallel.
In one embodiment, when forming series relationship between battery unit, in battery unit, first group of electric contact 40 and second group of electric contact 50 specifically can refer to Fig. 4 with the annexation of electrode contact 30.In the present embodiment, first group of electric contact 40 comprises the first electrical contact 40a, and second group of electric contact 50 comprises the 3rd electrical contact 50a, and electrode contact 30 comprises the first electrode contact 30a and the second electrode contact 30b.Wherein the first electrical contact 40a is electrically connected with the first electrode contact 30a, and this first electrode contact 30a is connected with the positive pole of battery 20, and the 3rd electrical contact 20a is electrically connected with the second electrode contact 30b, and this second electrode contact 30b is connected with the negative pole of battery 20.When two battery units are incorporated into together, be connected with the 3rd electrical contact 50a of the second battery unit by the first electrical contact 40a of the first battery unit, thus two battery units are formed series connection.
Further, based on above-described embodiment, in the present embodiment, above-mentioned battery unit also comprises for controlling the adjacent two battery unit combination locking of relation or the first switch element (not shown)s of unblock.
In the present embodiment, in order to ensure the reliability combined and the convenience increasing operation, can the first switch element be set on battery unit, the lock-out state of syntagmatic between battery unit is controlled by the on off state of this first switch element, when in a locked condition, cannot being separated between the battery unit of combination, when being in released state, allowing between the battery unit of combination to be separated.
Further, based on above-described embodiment, in the present embodiment, above-mentioned battery unit also comprises the second switch element (not shown) conducting relation for controlling first group of electric contact 40 and electrode contact 30, and control second group of electric contact 50 conducts the 3rd switch element (not shown) of relation with electrode contact 30.
In the present embodiment, first group of electric contact 40 protrudes from the first shell 10 and arranges, therefore for security consideration, in order to the first group of electric contact 40 preventing conductive body from touching unintentionally battery unit causes battery short circuit, switch control rule can be set on battery unit and block first group of electric contact 40 on its outer surface, also can second switch element be set in battery unit, conducts relation by this second switch element control electrode contact 30 and first group of electric contact 40.Simultaneously in order to prevent second group of electric contact 50 from producing short circuit, the 3rd switch element also can be set, conduct relation by the 3rd switch element control electrode contact 30 and second group of electric contact 50.
Such as, when not using, being disconnected by second switch element control electrode contact 30 and first group of electric contact 40, being disconnected by the 3rd switch element control electrode contact 30 and second group of electric contact 50; During use, the function of second switch element and the 3rd switch element can be selected as required, the annexation of first group of electric contact 40 and electrode contact 30 is controlled by second switch element, controlled the annexation of second group of electric contact 50 and electrode contact 30 by the 3rd switch element, thus make two battery units after combining form in parallel or series connection.
In order to reach more charge requirement, in the present embodiment, above-mentioned battery unit 1 also can comprise the wireless charging circuit for carrying out wireless charging, thus realizes wireless charging function.
In order to reach more charge requirement, in the present embodiment, above-mentioned battery unit 1 also can comprise the solar charging circuit for carrying out solar recharging, thus realizes function of solar charging.
The present invention also provides a kind of portable power source, and in conjunction with referring to figs. 1 through shown in Fig. 6, Fig. 5 is a viewing angle constructions schematic diagram of control module in portable power source one embodiment of the present invention; Fig. 6 is another viewing angle constructions schematic diagram of control module in portable power source one embodiment of the present invention.Portable power source provided by the invention comprises control module 2 and at least one battery unit 1, and described control module 2 comprises second housing 21, the 3rd group of electric contact 22 and the control circuit for controlling battery charging and discharging,
Wherein, described battery unit 1 is the battery unit in above-described embodiment;
Described second housing 21 comprises one the 3rd outer surface 211;
Described 3rd group of electric contact 22 is positioned at described 3rd outer surface 211;
Described control circuit is positioned at second housing 21, and is electrically connected with the 3rd group of electric contact 22;
Described control module 2 and battery unit 1 are grouped together by snap or pin mode or Tenon mode or magnetic attraction mode, and are maintained by first group of electric contact 40 of the 3rd of described control module 2 the group of electric contact 22 and a battery unit 1 and conduct relation.
In the present embodiment, control module 2 and battery unit 1 are combined, with the first outer surface 11 of the 3rd outer surface 211 of second housing 21 and the first shell 10 for faying face, physical combination is completed by snap, and together with the 3rd of control module 2 the group of electric contact 22 touch with first group of electric contact 40 of battery unit 1, complete the electrical connection of control module 2 and battery unit 1.
It should be noted that above-mentioned 3rd group of some contact 22 only can connect power supply, also can connect power supply, control signal and data-signal.Control module 2 and battery unit 1, except using the compound mode of buckle structure, can also select one of following several compound mode: pin connects, magnet suction, joinery and its construction.Adopt during the compound mode of magnet suction and need to insert a magnet in battery unit 1, in control module 2, correspondence position inserts a magnet or a ferrimagnet, and battery unit 1 and control module 2 are grouped together by the suction by magnet.After control module 2 and battery unit 1 combine, control circuit starts to control the electric current to battery unit charging and voltage, and controls the electric current that exports from control module and voltage.Achieve standardization and modularization owing to controlling the structure of mould 2 and battery unit 1, electric connection mode and compound mode, the battery unit quantity thus achieving portable power source can carry out combination in any easily.Owing to being connected by electrical contact between control module 2 with battery unit 1, while completing physical combination, complete electrical connection, do not need dismounting shell, by instrument or article or other materials, only with simple manual operations, very convenient.
It should be noted that in the present embodiment, owing to have employed the technical scheme of battery unit 1 in above-described embodiment, therefore portable power source provided by the invention has whole beneficial effects of above-mentioned battery unit 1.
Further, described control module 2 also comprises for controlling this control module 2 and the locking of described battery unit 1 syntagmatic or the 4th switch element (not shown) of unblock.
In the present embodiment, in order to ensure the reliability combined and the convenience increasing operation, can the 4th switch element be set in control module 2, the lock-out state of syntagmatic between battery unit is controlled by the on off state of the 4th switch element, when in a locked condition, the control module of combination cannot be separated with between battery unit, when being in released state, the control module of combination with allow between battery unit to be separated.
Described control module 2 also comprises the 5th switch element of the relation that conducts for controlling the 3rd group of electric contact 22 and control circuit.
In the present embodiment, when control module 2 is not connected with battery unit 1, by the 5th switch element, the 3rd group of electric contact 22 can be disconnected the connection with control circuit.Thus effectively prevent control module 2 when not using, because external conducting object causes the 3rd group of electric contact 22 short circuit, therefore, the present embodiment can improve the security and stability of control circuit work.
It should be noted that in the present embodiment, above-mentioned control circuit has the functions such as overvoltage protection, overcurrent protection, over-charge protective, Cross prevention, voltage transitions and Current Control.
It should be noted that in the present embodiment, above-mentioned control circuit comprises input interface and output interface, input interface is the interface providing voltage and current externally to control module, and output interface is the interface of the external output voltage of control module and electric current.There is the possibility being merged into an interface in input interface and output interface, but the function realized remains input and output.
Further, based on above-described embodiment, in the present embodiment, above-mentioned control module 2 also comprises the 6th switch element (not shown) for adjusting output current and voltage.In the present embodiment, the electric current adopting the 6th switch element regulable control module 2 to export and voltage, thus the electronic equipment of more different operating electric currents and voltage can be suitable for, be therefore more suitable for people and use.
Further, based on above-described embodiment, in the present embodiment, above-mentioned second housing 211 also comprises the 4th outer surface 212 being positioned at described 3rd outer surface 211 opposite face, described control module 2 also comprises the 4th group of electric contact 23 being positioned at described 4th outer surface 212, and the 4th group of electric contact 23 is electrically connected with described control circuit;
Control module described in adjacent two is grouped together by snap or pin mode or Tenon mode or magnetic attraction mode, and the 4th of a control module the group of electric contact 24 maintains with the 4th group of electric contact 24 of another control module and conduct relation, carry out communication or delivery of electrical energy for adjacent two control modules.
In order to reach more charge requirement, in the present embodiment, above-mentioned control module 2 also can comprise the wireless charging circuit for carrying out wireless charging, thus realizes wireless charging function.
In order to reach more charge requirement, in the present embodiment, above-mentioned control module 2 also can comprise the solar charging circuit for carrying out solar recharging, thus realizes function of solar charging.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a battery unit, is characterized in that, described battery unit comprises the first shell, battery, electrode contact, first group of electric contact and second group of electric contact,
Wherein, the first shell comprises the first outer surface and the second outer surface that are in opposite face position;
Described first group of electric contact is arranged at first surface, and second group of electric contact is arranged at the second outer surface;
Described first group of electric contact and second group of electric contact are electrically connected with battery respectively by described electrode contact;
Be grouped together by snap or pin mode or Tenon mode or magnetic attraction mode between battery unit described in adjacent two, and first group of electric contact of second of a battery unit group of electric contact and another battery unit maintains and conduct relation, between battery unit, form in parallel or series connection;
Described battery unit and a control module are grouped together by snap or pin mode or Tenon mode or magnetic attraction mode, and described battery unit is connected by electric contact with between control module;
Described in adjacent two between battery unit with the first outer surface of the second outer surface of a battery unit and another battery unit for faying face.
2. battery unit as claimed in claim 1, is characterized in that, described battery unit also comprises for controlling the adjacent two battery unit combination locking of relation or the first switch elements of unblock.
3. battery unit as claimed in claim 1, it is characterized in that, described battery unit also comprises the second switch element of the relation that conducts for controlling first group of electric contact and electrode contact; Described battery unit also comprises the 3rd switch element of the relation that conducts for controlling second group of electric contact and electrode contact.
4. battery unit as claimed in claim 1, it is characterized in that, described battery unit also comprises the wireless charging circuit for carrying out wireless charging.
5. a portable power source, is characterized in that, comprise control module and at least one battery unit, described control module comprises second housing, the 3rd group of electric contact and the control circuit for controlling battery charging and discharging,
Wherein, the battery unit of described battery unit according to any one of Claims 1-4;
Described second housing comprises one the 3rd outer surface;
Described 3rd group of electric contact is positioned at described 3rd outer surface;
Described control circuit is positioned at second housing, and is electrically connected with the 3rd group of electric contact;
Described control module and battery unit are grouped together by snap or pin mode or Tenon mode or magnetic attraction mode, and are maintained by first group of electric contact of the 3rd of described control module the group of electric contact and a battery unit and conduct relation;
Described control module with the first outer surface of the first shell of the 3rd outer surface of second housing and described battery unit for faying face.
6. portable power source as claimed in claim 5, is characterized in that, described control module also comprises for controlling this control module and described battery unit combines the locking of relation or the 4th switch element of unblock.
7. portable power source as claimed in claim 5, is characterized in that, described control module also comprises for controlling the 5th switch element of the relation that conducts of the 3rd group of electric contact and control circuit.
8. portable power source as claimed in claim 5, it is characterized in that, described control module also comprises the 6th switch element for adjusting output current and voltage.
9. portable power source as claimed in claim 5, it is characterized in that, described second housing also comprises the 4th outer surface being positioned at described 3rd outer surface opposite face, described control module also comprises the 4th group of electric contact being positioned at described 4th outer surface, and the 4th group of electric contact is electrically connected with described control circuit;
Control module described in adjacent two is grouped together by snap or pin mode or Tenon mode or magnetic attraction mode, and the 4th group of electric contact of the 4th of a control module the group of electric contact and another control module maintains and conduct relation, carry out communication or delivery of electrical energy for adjacent two control modules.
10. portable power source as claimed in claim 5, it is characterized in that, described control module also comprises the wireless charging circuit for carrying out wireless charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310105187.7A CN103219485B (en) | 2013-03-28 | 2013-03-28 | Battery unit and portable power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310105187.7A CN103219485B (en) | 2013-03-28 | 2013-03-28 | Battery unit and portable power source |
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| CN103219485A CN103219485A (en) | 2013-07-24 |
| CN103219485B true CN103219485B (en) | 2016-01-13 |
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| CN201310105187.7A Expired - Fee Related CN103219485B (en) | 2013-03-28 | 2013-03-28 | Battery unit and portable power source |
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| CN103701158A (en) * | 2013-11-25 | 2014-04-02 | 西诺控股集团有限公司 | Mobile power supply with detachable battery |
| CN105262180B (en) * | 2013-11-25 | 2018-01-12 | 西诺控股集团有限公司 | Free increase-volume portable power source |
| CN104953074A (en) * | 2014-03-27 | 2015-09-30 | 王怀云 | Magnetic connection structure of battery electrode |
| CN104882933B (en) * | 2015-06-02 | 2018-08-28 | 宁波奥斯达光电科技有限公司 | Combined charging is precious |
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| CN108878720A (en) * | 2018-07-06 | 2018-11-23 | 杨俊� | A kind of portable combined special power supply box body structure |
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| CN203119018U (en) * | 2013-03-28 | 2013-08-07 | 朱金怀 | Battery unit and portable power source |
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