CN203871894U - Charger and charging system - Google Patents
Charger and charging system Download PDFInfo
- Publication number
- CN203871894U CN203871894U CN201420252705.8U CN201420252705U CN203871894U CN 203871894 U CN203871894 U CN 203871894U CN 201420252705 U CN201420252705 U CN 201420252705U CN 203871894 U CN203871894 U CN 203871894U
- Authority
- CN
- China
- Prior art keywords
- charger
- power brick
- electrode terminal
- switch element
- depression
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001960 triggered effect Effects 0.000 claims abstract description 14
- 239000011449 brick Substances 0.000 claims description 103
- 238000009434 installation Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910005580 NiCd Inorganic materials 0.000 description 1
- 229910005813 NiMH Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003447 ipsilateral effect Effects 0.000 description 1
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
Abstract
The utility model discloses a charger and a charging system. The charging system comprises a battery pack and a charger used for charging the battery pack. The charger comprises a charger housing, which is provided with an inner cavity; a charging circuit, which is accommodated in the inner cavity, and is used to generate the charging current; a charger electrode terminal, which is electrically connected with the charging circuit, and is used to transmit the charging current to the battery pack. The charger also comprises a switch unit, which is serially connected between the charging circuit and the charger electrode terminal. When the switch unit is not triggered, the charging circuit and the charger electrode terminal are disconnected. When the switch unit is triggered, the charging circuit and the charger electrode terminal are connected in a conducted manner. The user cannot touch the electrified charger electrode terminal, and therefore the electric shock of the user caused by touching the charger electrode terminal can be prevented.
Description
Technical field
The utility model relates to a kind of charger and charging system.
Background technology
With in recent years, along with the development of battery material technology, the ability to work of battery significantly promotes, and its range of application also extends to some powerful power category electric devices from some low power electrical type electric devices, as electric tool etc.
Adopt the electric tool of power brick can break away from the constraint of cable and can use at any time, everywhere, these power brick are normally chargeable, as NI-G (Nickel-cadmium, NiCd) battery, ni-mh (Nickel-Metal Hydride, NiMH) battery, lithium ion (Lithium-ion, L-ion) battery etc., power brick is charged by charger, after having charged for electric equipment provides electric energy, after electric energy exhausts, again charge by charger, recycle.
For higher power is provided, and reduce the harmful effects such as the heating that large current work brings, people more select high-tension power brick.In the time using charger to this type of power brick charging, because charging voltage is higher, for example, while being greater than 40V, do not connect power brick on charger time, the charged electrode terminal exposing is easily touched unexpectedly by people, or by the unexpected conducting of object, there is the danger such as electric shock or short circuit, spark.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of can effectively prevent that user from touching the charger of the terminal of charged charger.
For achieving the above object, the technical scheme that the utility model provides is: a kind of charger, and be used to power brick to charge, comprising: charger shell, is formed with internal chamber; Charge circuit, is contained in described internal chamber, produces charging current; Charger electrode terminal, is connected with described charge circuit, for transmitting described charging current to described power brick; Described charger also comprises: series connection is arranged at the switch element between described charge circuit and described charger electrode terminal, in the time that described switch element is not triggered, connection between described charge circuit and described charger electrode terminal disconnects, in the time that described switch element is triggered, the connection conducting between described charge circuit and described charger electrode terminal.
Preferably, described switch element is sensitive switch.
Preferably, described sensitive switch is double break type sensitive switch.
Preferably, described charger shell comprises the first depression and the second depression, described the first depression is used for accommodating at least part of described power brick, described the second depression is extended to described charger shell is inner from the lip-deep opening that is arranged at described the first depression, and described switch element comprises the trigger element that extends in described the second depression through described charger shell in described internal chamber and do not cross described opening.
Preferably, the greatest width dimension of described opening is not more than 3 millimeters.
Preferably, described power brick is provided with the projection for triggering described switch element, and described projection and described the second depression match.
Preferably, the charging voltage that described charger provides is not less than 40V.
For solving the problems of the technologies described above, the utility model provides a kind of can effectively prevent that user from touching the charging system of the terminal of charged charger.
For achieving the above object, the technical scheme that the utility model provides is: a kind of charging system, comprise charger and power brick, and described charger comprises: charger shell, is formed with internal chamber; Charge circuit, is contained in described internal chamber, produces charging current; Charger electrode terminal, is connected with described charge circuit, for transmitting described charging current to described power brick; Switch element, series connection is arranged between described charge circuit and described charger electrode terminal, controls being connected between described charge circuit and described charger electrode terminal; Described power brick comprises: power brick housing; Battery unit, is contained in described power brick enclosure interior; And power brick terminal, be connected with described battery unit, receive the charging current that described charger electrode terminal transmits; Described power brick has the primary importance separating with described charger and the second place connecting with described charger, in the time that described power brick is positioned at primary importance, described switch element disconnects, connection between described charge circuit and described charger electrode terminal disconnects, in the time that described power brick is positioned at the second place, described switch element closure, the connection conducting between described charge circuit and described charger electrode terminal.
Preferably, on described charger shell, be provided with first depression of accommodating described power brick and second depression of accommodating at least partly at least part of described switch element, on described power brick housing, be provided with the projection for triggering described switch element, in the time that described power brick is positioned at the second place, described projection is contained in described the second depression completely.
Preferably, in the time that described power brick separates from described charger, described switch element automatically resets to off-state.
Preferably, in the time that described switch element is closed, described charger electrode terminal is contained in the inner space that described charger and described power brick are connected to form completely.
Compared with prior art, the charger that the utility model provides and charging system by arranging switch element on the housing of charger, in the time that power brick is not coupled to charger, charger electrode terminal exposes, switch element disconnects the electric connection of charger electrode terminal and charge circuit, and charger electrode terminal is not charged; In the time that power brick is coupled to charger, charger electrode terminal does not expose, the electric connection of the closed charger electrode terminal of switch element and charge circuit.Thereby reach the effect that makes user cannot touch charged charger electrode terminal, effectively prevented that user from causing getting an electric shock because touching charger electrode terminal.
Brief description of the drawings
Below in conjunction with drawings and embodiments, the utility model is described in further detail;
Fig. 1 is the schematic diagram of the charging system that provides of the utility model execution mode, and now power brick is in primary importance;
Fig. 2 is the schematic diagram of the charger that provides of the utility model execution mode;
Fig. 3 is the principle schematic of the charger that provides of the utility model execution mode;
Fig. 4 is the schematic diagram of power brick in the charging system that provides of the utility model execution mode;
Fig. 5 is the cutaway view of power brick in the charging system that provides of the utility model execution mode;
Fig. 6 is the schematic diagram of the charging system that provides of the utility model execution mode, and now power brick is in the second place;
Fig. 7 is the charging system cutaway view that the utility model execution mode provides.
Wherein:
1. charger shell 100. chargers
3. charge circuit 200. power brick
5. charger electrode terminal 201. power brick housings
7. switch element 203. battery units
9. power line 205. power brick electrode terminals
11. first depression 207. openings
13. slide rail 209. projections
15. public pole piece 211. slide rails
17. second depression 215. female pole pieces
19. trigger element 300. charging systems
Embodiment
Referring to Fig. 1, is the charging system 300 that the utility model execution mode provides, and charging system 300 comprises charger 100 and power brick 200.Power brick 200 has the primary importance separating with charger 100, and the second place connecting reliably with charger 100.
In the present embodiment, the output voltage of power brick 200 is not less than 40V, is used to electric tool that electric power is provided, electric tool can be the garden tools such as lopping shears, hay mover, chain saw, can be also electric circular saw, electric hammer, electric drill, reciprocating saw, the hand-held tools such as sweep-saw, do not enumerate at this, in the time that power brick 200 is connected with electric tool, discharge to drive electric tool work, in the time of power shortage that power brick 200 is stored, be connected to charger 100 and charge.
Refer to Fig. 2 and Fig. 3, charger 100 comprises charger shell 1, housing 1 is formed with the internal chamber of the part components and parts of accommodating charger 100, be contained in the charge circuit 3 of charger shell 1 inside, with the charger electrode terminal 5 that charge circuit 3 is electrically connected, series connection is arranged at switch element 7 and the power line 9 between charge circuit 3 and charger electrode terminal 5.
Power line 9 can be connected with external ac power source, for charger 100 provides AC power; Charge circuit 3 is electrically connected with power line 9, and the AC power that power line 9 is provided, is converted to and can be the DC power supply that power brick 200 is charged; Charger electrode terminal 5 is arranged on charger shell 1, and the DC power supply that charge circuit 3 is produced offers power brick and charges.
Those of ordinary skill in the art is understandable is, charger shell 1 inside is provided with printed circuit board (PCB), charge circuit 3 is arranged on printed circuit board (PCB), charger electrode terminal 5 and switch element 7, can be set directly on printed circuit board (PCB) and be electrically connected with charge circuit 3, also can be electrically connected by electric wire and charge circuit 3.
On charger shell 1, be provided with the first depression 11, in the time that power brick 200 is mounted on charger 100, what the first depression 11 was at least part of accommodates power brick 200.On the side of the first depression 11, be formed with slide rail 13, for guiding self-contained battery bag 200, install when power brick 200, slide rail 13 guides power brick 200 to move until the second place along default installation direction, and can limit power brick 200 along the displacement perpendicular to default installation direction.
On charger shell 1, be also provided with the second depression 17, the second depression 17 is extended to the inside of charger shell 1 from the lip-deep opening that is arranged at the first depression 11, in the present embodiment, the opening of the second depression 17 is arranged on the sidewall of the first depression 11, extends to charger shell 1 is inner along the installation direction of power brick 200.Certainly, the opening of the second depression 17 also can be arranged on the bottom surface of the first depression 11, extends to charger shell 1 is inner along the installation direction perpendicular to power brick 200.
In the present embodiment, opening and the cross section of the second depression 17 are rectangle, in unshowned execution mode, opening and the cross section of the second depression 17 can be also other shapes with certain anti-error function, for example square, circle, convex shape, or polygon etc.
Charger electrode terminal 5 is arranged on charger shell 1, comprise the base 13 that insulating material is made and be fixedly installed on the public pole piece 15 on base, public pole piece 15 is the installation direction along power brick 200 from base 13, to the interior extension of the first depression 11, at least comprise to anode pole piece and the cathode pole piece of power brick 200 transmitting electric power.Further, public pole piece 15 can also comprise some functional pole pieces, for example, realize the pole piece of communicating by letter of transfer of data with the control circuit in power brick 200, detects the detection pole piece of power brick 200 internal temperatures, identification pole piece of the kind of identification power brick 200 etc.
Switch element 7 is for controlling the electric power transfer between charge circuit 3 and charger electrode terminal 5, preferably, switch element 7 is sensitive switch, comprise the trigger element 19 on switch main body that is arranged at of switch main body (not shown) and activity, in switch main body, be provided with the flexible member for supporting trigger element 19, for example spring, in the time having pressure to put on trigger element 19, trigger element 19 pushes flexible member and produces displacement, in the time putting on pressure on trigger element 19 and remove, trigger element 19 is under the elastic force effect of flexible member, automatically reset.On the printed circuit board (PCB) that switch main body is fixedly installed on charger shell 1 or charger shell 1 inside arranges, in the internal chamber of trigger element 19 self-charging devices 100, extend in the second depression 17 through charger shell 1, and any part of trigger element 19 does not all exceed the opening of the second depression 17, to prevent that switch element 7 from being triggered unexpectedly.Preferably, the greatest width dimension of the opening of the second depression 17 is not more than 3 millimeters, and enough narrow A/F can better avoid switch element 7 to be triggered unexpectedly by objects such as fingers.
Different set-up mode according to switch element 7 in the internal chamber of charger 100, trigger element 19 can pass from the not ipsilateral of the second depression 17, and can be triggered by different directions applied pressure.In the present embodiment, the second depression 17 has perpendicular to the end face of the installation direction of power brick 200 and is parallel to the side of the installation direction of power brick 200, trigger element 19 passes from the end face of the second depression 17, and the installation direction institute applied pressure that can be parallel to power brick 200 by edge triggers.In other unshowned present embodiments, trigger element 19 passes from the side of the second depression 17, and can trigger perpendicular to the installation direction institute applied pressure of power brick 200 by edge.
Under conventional state, when trigger element 19 is not triggered, switch element 7 is in off-state, and the connection between charge circuit 3 and described charger electrode terminal 5 is disconnected, the charger electrode terminal 5 that exposes to charger shell 1 is not charged, has exempted the danger that user gets an electric shock; In the time that trigger element 19 is triggered, switch element 7 closures, the electric connection between charge circuit 4 and charger electrode terminal 5 is switched on.Preferably, switch element 7 is double-break switch, can connect simultaneously or cut off the electric connection of charge circuit 3 and charger electrode terminal 5 positive poles and negative pole, and reliability is higher.
Refer to Fig. 4 and Fig. 5, power brick 200 comprises power brick housing 201, is contained in the battery unit 203 in power brick housing 201, and the power brick electrode terminal 205 being electrically connected with battery unit 203.
In the present embodiment, battery unit 203 is lithium ionic cell unit, has lithium metal oxide and/or lithium ion phosphate and/or other lithium base chemical compositions; Battery unit 203 has the nominal voltage scope about 3.3 to 4.6 volts of scopes greatly, and certainly, according to the specific chemical characteristic of the charged state of battery unit (whether battery is full of electricity) and battery, these values can change.Battery unit entirety is cylindrical, has the roughly rounded end face on side and two opposite sides, has the length of about 65mm and the about cross-sectional diameter of 18mm.Multiple batteries unit 203, by series connection or mode in parallel, makes power brick 200 reach predetermined voltage or capacity, and in the present embodiment, power brick 200 has the battery unit that 10 joints are connected in series, and has the nominal voltage of about 40V.Certainly, battery unit 203 also can be made up of other chemical compositions, has different nominal voltage scopes, but generally speaking, it can, by the mode of series connection, make power brick 200 have higher nominal voltage, for example 40V, 42V, 48V, 60V etc.
Power brick electrode terminal 205 is arranged in power brick housing 201, comprise the base that insulating material is made and be fixedly installed on base and towards female pole piece 215 of power brick housing 201 outer openings, female pole piece 215 extends along the installation direction lengthwise of power brick 200, just at least comprise, cathode pole piece, further, female pole piece 215 can also comprise some functional pole pieces, for example realize the pole piece of communicating by letter of transfer of data with the control circuit in charger or instrument, detect the detection pole piece of power brick 200 internal temperatures, identification pole piece of the kind of identification power brick 200 etc.
Power brick housing 201 entirety are ship type, outside coated and battery unit 203 and power brick electrode terminal 205, position corresponding with female pole piece 215 on power brick housing 201 is provided with opening 207, in the time that power brick 200 is mounted to charger 100, the public pole piece 15 of charger electrode terminal 5 enters in power brick housing by opening 207, contacts with female pole piece of power brick electrode terminal 205.
On power brick housing 201, be provided with chute 211, for charger on slide rail 13 suitable, guiding power brick 200 move until the second place along default installation direction.
On power brick housing 201, be provided with projection 209, for triggering the switch element 7 on charger 100.The outside lengthwise of direction that the surfaces that projection 209 is provided with opening 207 on power brick housing 201 are mounted to charger 100 along power brick 200 extends, have with charger shell 1 on the second depression 17 shape matching and sizes.In the time that power brick 200 is mounted to charger 100, the position of projection 209 is corresponding with the position of the depression of second on charger shell 1 17.
Please also refer to Fig. 1, Fig. 6 and Fig. 7, in the time of the primary importance of power brick 200 in separating with charger 100, trigger element 19 is not triggered in the second depression 17, switch element 7 is in off-state, between charge circuit 3 and described charger electrode terminal 5, without being electrically connected, the charger electrode terminal 5 that exposes to charger shell 1 is not charged.
Power brick 200 is coupled in the process of charger 100 and in the time of the second place of power brick 200 in connecting reliably with charger 100, projection 209 is corresponding with the second depression 17, projection 209 is in the process of insertion the second depression 17, trigger element 19 is depressed towards charger shell 1 inside by projection 209, in the time that trigger element 19 is triggered, switch element 7 closures, electric connection between charge circuit 4 and charger electrode terminal 5 is switched on, now charger electrode terminal 5 is contained in the inner space that charger and power brick are connected to form completely, can do not touched by user, avoid bringing the danger of electric shock to user.
When power brick 200 is when charger 100 separates, projection 209 is left in the second depression 17, trigger element 19 automatically resets to the state not being triggered under the effect of flexible member, switch element 7 returns to off-state, between charge circuit 3 and described charger electrode terminal 5, without being electrically connected, the charger electrode terminal 5 that exposes to charger shell 1 is not charged.Make user can not touch all the time charged charger electrode terminal, avoided user to cause getting an electric shock because touching charger electrode terminal.
What it may occur to persons skilled in the art that is; the utility model can also have other implementation; but as long as its technical spirit adopting is identical with the utility model or close, or any easy full of beard of making based on the utility model and variation and replacement all within protection range of the present utility model.
Claims (10)
1. a charger, is used to power brick to charge, and comprising:
Charger shell, is formed with internal chamber;
Charge circuit, is contained in described internal chamber, produces charging current;
Charger electrode terminal, is connected with described charge circuit, for transmitting described charging current to described power brick;
It is characterized in that, described charger also comprises:
Series connection is arranged at the switch element between described charge circuit and described charger electrode terminal, in the time that described switch element is not triggered, connection between described charge circuit and described charger electrode terminal disconnects, in the time that described switch element is triggered, the connection conducting between described charge circuit and described charger electrode terminal.
2. charger according to claim 1, is characterized in that: described switch element is sensitive switch.
3. charger according to claim 2, is characterized in that: described sensitive switch is double break type sensitive switch.
4. charger according to claim 1, it is characterized in that: described charger shell comprises the first depression and the second depression, described the first depression is used for accommodating at least part of described power brick, described the second depression is extended to described charger shell is inner from the lip-deep opening that is arranged at described the first depression, and described switch element comprises the trigger element that extends in described the second depression through described charger shell in described internal chamber and do not cross described opening.
5. charger according to claim 4, is characterized in that: the greatest width dimension of described opening is not more than 3 millimeters.
6. charger according to claim 1, is characterized in that: the charging voltage that described charger provides is not less than 40V.
7. a charging system, comprises charger and power brick, it is characterized in that:
Described charger comprises: charger shell, is formed with internal chamber; Charge circuit, is contained in described internal chamber, produces charging current; Charger electrode terminal, is connected with described charge circuit, for transmitting described charging current to described power brick; Switch element, series connection is arranged between described charge circuit and described charger electrode terminal, controls being connected between described charge circuit and described charger electrode terminal;
Described power brick comprises: power brick housing; Battery unit, is contained in described power brick enclosure interior;
And power brick terminal, be connected with described battery unit, receive the charging current that described charger electrode terminal transmits;
Described power brick has the primary importance separating with described charger and the second place connecting with described charger, in the time that described power brick is positioned at primary importance, described switch element disconnects, connection between described charge circuit and described charger electrode terminal disconnects, in the time that described power brick is positioned at the second place, described switch element closure, the connection conducting between described charge circuit and described charger electrode terminal.
8. charging system according to claim 7, it is characterized in that: on described charger shell, be provided with first depression of accommodating at least part of described power brick and second depression of accommodating at least partly described switch element, on described power brick housing, be provided with the projection for triggering described switch element, in the time that described power brick is positioned at the second place, described projection is contained in described the second depression completely.
9. charging system according to claim 7, is characterized in that: in the time that described power brick separates from described charger, described switch element automatically resets to off-state.
10. charging system according to claim 7, is characterized in that: in the time that described switch element is closed, described charger electrode terminal is contained in the inner space that described charger and described power brick are connected to form completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420252705.8U CN203871894U (en) | 2013-10-12 | 2014-05-16 | Charger and charging system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310474564.4 | 2013-10-12 | ||
| CN201310474564 | 2013-10-12 | ||
| CN201420252705.8U CN203871894U (en) | 2013-10-12 | 2014-05-16 | Charger and charging system |
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| Publication Number | Publication Date |
|---|---|
| CN203871894U true CN203871894U (en) | 2014-10-08 |
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| CN201420252705.8U Expired - Lifetime CN203871894U (en) | 2013-10-12 | 2014-05-16 | Charger and charging system |
| CN201711422063.6A Pending CN108206567A (en) | 2013-10-12 | 2014-05-16 | Charger and charging system |
| CN201410208983.8A Active CN104578231B (en) | 2013-10-12 | 2014-05-16 | Charger and charging system |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711422063.6A Pending CN108206567A (en) | 2013-10-12 | 2014-05-16 | Charger and charging system |
| CN201410208983.8A Active CN104578231B (en) | 2013-10-12 | 2014-05-16 | Charger and charging system |
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| CN104578231A (en) * | 2013-10-12 | 2015-04-29 | 苏州宝时得电动工具有限公司 | Charger and charge system |
| CN106160037A (en) * | 2015-03-30 | 2016-11-23 | 南京德朔实业有限公司 | Charger and have this charger charging combination |
| CN106997941A (en) * | 2016-01-25 | 2017-08-01 | 罗新平 | It rechargeable battery structure |
| CN109068220A (en) * | 2018-09-03 | 2018-12-21 | 歌尔股份有限公司 | Earphone, earphone charging box and earphone suit |
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2014
- 2014-05-16 CN CN201420252705.8U patent/CN203871894U/en not_active Expired - Lifetime
- 2014-05-16 CN CN201711422063.6A patent/CN108206567A/en active Pending
- 2014-05-16 CN CN201410208983.8A patent/CN104578231B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578231A (en) * | 2013-10-12 | 2015-04-29 | 苏州宝时得电动工具有限公司 | Charger and charge system |
| CN106160037A (en) * | 2015-03-30 | 2016-11-23 | 南京德朔实业有限公司 | Charger and have this charger charging combination |
| CN106160037B (en) * | 2015-03-30 | 2018-09-28 | 南京德朔实业有限公司 | Charger and with the charger charging combination |
| CN106997941A (en) * | 2016-01-25 | 2017-08-01 | 罗新平 | It rechargeable battery structure |
| CN109068220A (en) * | 2018-09-03 | 2018-12-21 | 歌尔股份有限公司 | Earphone, earphone charging box and earphone suit |
| CN111313504A (en) * | 2020-03-28 | 2020-06-19 | 南京滨德科技有限公司 | Multi-head charging system for myofascial gun battery pack and battery charging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108206567A (en) | 2018-06-26 |
| CN104578231B (en) | 2017-12-01 |
| CN104578231A (en) | 2015-04-29 |
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