CN108539827B - Charger and battery pack matched with same - Google Patents
Charger and battery pack matched with same Download PDFInfo
- Publication number
- CN108539827B CN108539827B CN201810515272.3A CN201810515272A CN108539827B CN 108539827 B CN108539827 B CN 108539827B CN 201810515272 A CN201810515272 A CN 201810515272A CN 108539827 B CN108539827 B CN 108539827B
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- Prior art keywords
- charger
- battery pack
- plug
- control piece
- conductive plug
- 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.)
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- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 2
- 230000001960 triggered effect Effects 0.000 description 7
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a charger, comprising a shell, a power plug connected with the shell and a plug connection assembly, wherein the plug connection assembly comprises a conductive plug which is fixedly arranged relative to the shell and is selectively and electrically connected with the power plug, and a battery pack is operatively and electrically connected with the conductive plug, and the charger is characterized in that: the shell is also provided with an on-off control piece, the charger is switched between two states, and in a first state, the on-off control piece breaks the electrical connection between the power plug and the conductive plug; the on-off control piece conducts the electric connection between the power plug and the conductive plug in a second state; the mechanical connection action of the battery pack and the charger triggers the on-off control piece to enable the charger to be converted into a second state from a first state, and the on-off control piece is positioned at the front part of the conductive plug along the mechanical connection path of the battery pack and the charger.
Description
Technical Field
The invention relates to a charger and a battery pack matched with the charger.
Background
At present, the charger for charging the battery packs of electric tools and garden tools in the market is mainly lower than the safety voltage of a human body, so that the charging terminal of the charger is exposed outside to meet the safety production regulation, serious accidental electric shock accidents can not be caused to the human body generally, and the high-voltage European style charger for charging the large-capacity battery packs (battery packs above 40V) is high in charging voltage and has higher safety standard requirements when charging the large-capacity battery packs, so that the structure for ensuring the charging safety of the high-voltage European style charger is complex and has higher cost.
Accordingly, there is a need for improvements in the art to address the above-described problems.
Disclosure of Invention
The invention aims to provide a charger which is simple in structure and low in cost.
Another object of the present invention is to provide a battery pack that is more safe and reliable to charge in cooperation with a charger.
To achieve the above object, the present invention provides a charger, comprising a housing, a power plug connected to the housing, and a plug connection assembly, the plug connection assembly comprising a conductive plug fixedly disposed with respect to the housing and selectively electrically connected to the power plug, a battery pack operatively electrically connected to the conductive plug, characterized in that: the shell is also provided with an on-off control piece, the charger is switched between two states, and in a first state, the on-off control piece breaks the electrical connection between the power plug and the conductive plug; the on-off control piece conducts the electric connection between the power plug and the conductive plug in a second state; the mechanical connection action of the battery pack and the charger triggers the on-off control piece to enable the charger to be converted into a second state from a first state, and the on-off control piece is positioned at the front part of the conductive plug along the mechanical connection path of the battery pack and the charger.
As a further improvement of an embodiment of the present invention, the housing is provided with a long groove extending along a mechanical connection path between the battery pack and the charger, the long groove is disposed adjacent to the conductive plug, and the on-off control member is disposed in the long groove.
As a further improvement of an embodiment of the present invention, the plug connection assembly includes a conductive plug, and the elongated slot is disposed at one side of the conductive plug along a mechanical connection path perpendicular to the battery pack and the charger.
As a further improvement of an embodiment of the present invention, the housing of the charger has a first surface and a second surface that are attached to the battery pack, the first surface and the second surface are both parallel to the mechanical connection path between the battery pack and the charger, and the first surface is higher than the second surface, the plug connection assembly is disposed on the second surface, and the on-off control member is located between the first surface and the second surface along the height direction of the charger.
As a further improvement of an embodiment of the present invention, the housing is provided with a groove corresponding to the long groove, and the on-off control member extends out of the groove along the extending direction of the long groove.
As a further improvement of an embodiment of the present invention, the conductive plug is selectively electrically connected to the power plug through a micro switch, the micro switch is disposed in the housing, and the on-off control member is configured as a contact of the micro switch.
As a further development of an embodiment of the invention, the switching control element is designed as a conductive spring plate.
As a further improvement of an embodiment of the present invention, a movement direction of the on-off control member for conducting the electrical connection between the power plug and the conductive plug coincides with a mechanical connection path of the battery pack and the charger.
As a further improvement of an embodiment of the present invention, the charger is provided with a clamping groove, the battery pack is provided with a buckle, the buckle is sunk into the clamping groove to lock the charger and the battery pack, and the clamping groove is located at the rear side of the conductive plug along the mechanical connection path between the battery pack and the charger.
The invention also relates to a battery pack matched with the charger, which comprises a battery pack shell and a slot arranged on the shell, wherein the conductive plug is inserted into the slot to realize the electric connection between the charger and the battery pack, the battery pack shell is provided with an actuating piece, and the actuating piece is positioned at the front part of the slot and corresponds to the first state of the charger along the mechanical connection path of the battery pack and the charger, and the actuating piece is separated from the on-off control piece; the actuating piece triggers the on-off control piece corresponding to the second state of the charger; the mechanical connection action of the battery pack and the charger enables the actuating piece to trigger the on-off control piece.
As a further improvement of an embodiment of the present invention, the actuating member is a rib plate disposed on an end surface where the slot opening is located, a long slot extending along a mechanical connection path between the battery pack and the charger is disposed on the housing of the charger, the long slot is disposed adjacent to the conductive plug, the on-off control member is disposed in the long slot, and in the second state of the charger, the rib plate extends into the long slot to trigger the on-off control member.
From the above technical solutions, the present invention has a plurality of outstanding substantial technical features, and after implementing the technical solutions of the present invention, the significant technical progress is mainly: the on-off control part can be triggered by only one part without other parts and only by one action of inserting the battery pack; when the battery pack is inserted into the charger, the on-off control piece is triggered so that the charger is communicated with the power supply to start working. The structure is simple and convenient in design, and the cost is saved while the safety protection function of the charger is realized.
Drawings
Fig. 1 is a perspective view of a charger in a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view of portion a of FIG. 1;
FIG. 3 is a top view of the charger of FIG. 1;
fig. 4 is a perspective view of a battery pack engaged with a charger in a preferred embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of the charger of FIG. 1 in charging connection with the battery pack of FIG. 4, wherein the charging circuit is non-conductive;
FIG. 6 is an enlarged schematic view of portion b of FIG. 5;
FIG. 7 is a schematic cross-sectional view of the charger of FIG. 1 in charging connection with the battery pack of FIG. 4, wherein the charging circuit is conductive;
fig. 8 is an enlarged schematic view of portion c of fig. 7.
Detailed Description
The present invention will be described in detail below with reference to embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural or functional modifications thereof by those skilled in the art are intended to be included within the scope of the present invention.
Referring to fig. 1 to 5, the charger 100 includes a housing 10, a power plug 30, and a plug connection assembly 20, the power plug 30 being connected to the housing 10 through a power cord, the plug connection assembly 20 being connected to the housing 10, such as being fixed to the housing 10 by means of a screw connection. The plug connection assembly 20 comprises at least two conductive plugs 21, wherein the conductive plugs 21 and the power plug 30 can be electrically connected, the power plug 21 is connected with the mains supply, and the battery pack can be electrically connected with the conductive plugs 21, namely, the charger 100 can charge the battery pack. In the present embodiment, the plug connection assembly 20 includes at least two conductive plugs 21, and the conductive plugs 21 are also fixed relative to the housing 10 based on the fixing of the plug connection assembly 20 relative to the housing 10 to ensure the stability of the electrical connection.
Based on the use safety of the charger, an on-off control piece is arranged at the matching position of the charger 100 and the battery pack, the on-off control piece can be a mechanical structure switch, specifically, the on-off control piece can be arranged on a shell and is used for disconnecting the electric connection between the power plug 30 and the conductive plug 21, the mechanical connection action of the battery pack and the charger 100 can trigger the on-off control piece to conduct the electric connection between the power plug 30 and the conductive plug 21, so that when the battery pack is not connected to the charger 100 for charging, the circuit connection between the conductive plug 21 and the power plug 30 is in a disconnected state, that is, the charger can be switched between two states, and the on-off control piece disconnects the electric connection between the power plug 30 and the conductive plug 21 in a first state; in the second state, the on-off control turns on the electrical connection between the power plug 30 and the conductive plug 21. In addition, on-off control is located at the front of the conductive plug 21 along the mechanical connection path of the battery pack with the charger 100. Here, the battery pack is mechanically connected to the charger for charging, and the direction of movement of the battery pack with respect to the charger is referred to. In the process of charging connection between the battery pack and the charger, the battery pack firstly contacts the conductive plug 21 and then contacts the on-off control piece, and even if the on-off control piece is triggered firstly, the conductive plug cannot be contacted is ensured. Of course, it is preferable that the electrical connection between the conductive plug 21 and the battery pack is firstly achieved and then the electrical connection between the on-off control member and the power plug 30 is achieved, or the electrical connection between the conductive plug 21 and the battery pack and the electrical connection between the on-off control member and the power plug 30 are achieved simultaneously, so that the safety of charging is ensured.
The charging mechanical connection manner of the battery pack and the charger may be various, such as plug-in connection, sliding connection, etc., in this embodiment, the sliding connection of the battery pack and the charger is specifically described, and the sliding direction of the battery pack relative to the charger is the mechanical connection path of the battery pack and the charger. The housing 10 is provided with a long groove 11 adjacent to the plug connection assembly 20, the long groove 11 extends along the mechanical connection path between the battery pack and the charger, and the width of the long groove along the mechanical connection path perpendicular to the battery pack and the charger is approximately three to five times the thickness of the conductive plug 21, wherein the on-off control piece is arranged in the long groove 11, so that false triggering cannot be caused. The plug connection assembly 20 may be provided with one, including four conductive plugs, with the elongated slot 11 being provided on the plug connection assembly between two conductive plugs 21, or one side of one of the conductive plugs; of course, two plug connection assemblies may be provided, each including two conductive plugs, and a slot may be formed between the two plug connection assemblies. Preferably, four conductive plugs are arranged at intervals along a mechanical connection path perpendicular to the battery pack and the charger, the long groove 11 is formed between the two middle conductive plugs 21, namely, the long groove can be arranged on the plug connection assembly, and the on-off control piece is arranged in the long groove 11 and used for switching on or switching off a charging loop, so that the charger 100 is safer to use. In the present embodiment, the on-off control member is configured as the contact 51 of the micro switch 50, however, in other embodiments, the on-off control member may be a conductive spring, an on-off button of a mechanical switch, or the like. In this embodiment, the micro switch 50 is connected in series in the charging circuit, and the micro switch 50 is disposed in the housing 10 of the charger, the on-off control member may be the contact 51 of the micro switch 50, and the contact 51 of the micro switch 50 is disposed in the long and narrow deep groove formed on the plug connection assembly 20, so as not to cause false triggering. When the charger is not in operation, the micro switch 50 is in a normally open state, and the conductive plug 21 of the charger is not electrified.
As shown in fig. 4, in order to cooperate with the charger 100, in the preferred embodiment of the present invention, the housing 60 of the battery pack 200 is provided with a slot 71 that cooperates with the conductive plug 21, and the battery pack 200 and the charger 100 are electrically connected in a plug-in manner by guiding the slot 71 and the conductive plug 21 through the cooperation of the guide rail and the guide groove. The casing 60 of the battery pack 200 is further provided with actuating members 80 for triggering on-off control members on the charger 100, the actuating members 80 are configured as rib plates arranged adjacent to the slots 71, the number of the slots 71 is the same as that of the conductive plugs 21, in this embodiment, the number of the slots 71 is four, the rib plates are arranged between two middle slots and used for penetrating into the long slots 11 of the charger, the switch contacts 51 of the micro switch 50 are triggered, and the contacts 51 are closed to conduct a charging circuit of the charger 100.
Referring to fig. 5 and 6, when the battery pack 200 is inserted into the charger 100 in the direction of arrow a shown in the drawing, the actuator 80 on the battery pack 200 moves toward the long groove 11. The charger 100 is in a standby state, even if the slot 71 and the conductive plug 21 are electrically connected, the battery pack 200 does not trigger the micro switch 50 at this time, and the main power input of the charger 100 is in a disconnected state, so that the charger 100 does not work and is not connected with the power supply, thereby protecting the safety of the user.
Referring to fig. 7 and 8, the battery pack 200 continues to be inserted into the charger 100 in the direction of arrow a until the latch 62 on the battery pack 200 is inserted into the slot 12 on the charger 100, the slot 12 is located at the rear side of the conductive plug 21 along the mechanical connection path between the battery pack 200 and the charger 100, the switch contact 51 of the microswitch 50 is triggered by the actuator 80, so that the power circuit of the charger 100 is turned on, the charger 100 operates normally, and the position of the battery pack 200 relative to the charger 100 is locked, thereby ensuring stability and safety during charging.
Preferably, when charging, the battery pack 200 is located at the upper part of the charger 100, the housing 10 of the charger 100 has a first surface 101 and a second surface 102 which are attached to the battery pack 200, the first surface 101 and the second surface 102 are parallel to the mechanical connection path between the battery pack 200 and the charger 100, the first surface 101 is higher than the second surface 102, the long groove 11 is located at the upper part of the second surface 102, and the on-off control member is located between the first surface 101 and the second surface 102 along the height direction. The width of the long groove 11 is narrower, and the on-off control piece is hidden in the long groove 11, so that the on-off control piece cannot be directly contacted from top to bottom, front to back, left to right, and accidental triggering is further prevented. In addition, the shell 10 is further provided with a groove 15 corresponding to the position of the long groove 11, and the on-off control piece can extend out of the groove along the extending direction of the long groove, so that the on-off control piece can be conveniently installed and positioned on the shell 10. Furthermore, the movement direction of the electrical connection between the power plug 30 and the conductive plug 21 is consistent with the mechanical connection path between the battery pack 200 and the charger 100, so that the charging connection action between the battery pack 200 and the charger 100 can be ensured to effectively trigger the on-off control.
The invention can trigger the micro switch by only one component without other components and only by one action of inserting the battery pack; because the switch contact of the micro switch is positioned on the outer surface of the shell, the micro switch can be directly triggered by an actuating piece extending out of the battery pack, and when the battery pack is inserted into the charger, the mechanical switch is triggered so that the charger is communicated with a power supply to start working. The trigger micro switch can be realized by only one part without other parts and only by one action of inserting the battery pack, and the structure is simple and convenient in design, realizes the safety protection function of the charger and saves the cost.
It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.
The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a charger, includes the casing, connects in power plug and the plug coupling assembling of casing, plug coupling assembling includes conductive plug, conductive plug relative casing fixed setting and optional with the power plug electricity is connected, battery package operable with conductive plug electricity is connected, its characterized in that: the shell is also provided with an on-off control piece, the charger is switched between two states, and in a first state, the on-off control piece breaks the electrical connection between the power plug and the conductive plug; the on-off control piece conducts the electric connection between the power plug and the conductive plug in a second state; the mechanical connection action of the battery pack and the charger triggers the on-off control piece to enable the charger to be converted into a second state from a first state, the on-off control piece is located at the front part of the conductive plug along the mechanical connection path of the battery pack and the charger, a long groove extending along the mechanical connection path of the battery pack and the charger is formed in the shell, the long groove is adjacent to the conductive plug, and the on-off control piece is arranged in the long groove.
2. The charger according to claim 1, wherein: the plug connection assembly comprises a conductive plug, and the long groove is arranged on one side of the conductive plug along a mechanical connection path perpendicular to the battery pack and the charger.
3. The charger according to claim 2, wherein: the shell of the charger is provided with a first surface and a second surface which are attached to the battery pack, the first surface and the second surface are parallel to the mechanical connection path of the battery pack and the charger, the first surface is higher than the second surface, the plug connection assembly is arranged on the second surface, and the on-off control piece is located between the first surface and the second surface along the height direction of the charger.
4. The charger according to claim 1, wherein: the shell is provided with a groove corresponding to the long groove, and the on-off control piece extends out of the groove along the extending direction of the long groove.
5. The charger according to claim 1, wherein: the conductive plug is selectively and electrically connected with the power plug through a micro switch, the micro switch is arranged in the shell, and the on-off control piece is configured as a contact of the micro switch.
6. The charger according to claim 1, wherein: the on-off control piece is configured as a conductive spring piece.
7. The charger according to claim 1, wherein: the on-off control piece conducts the movement direction of the electric connection between the power plug and the conductive plug to be consistent with the mechanical connection path of the battery pack and the charger.
8. The charger according to claim 1, wherein: the charger is provided with a clamping groove, the battery pack is provided with a buckle, the buckle falls into the clamping groove to lock the charger and the battery pack, and the clamping groove is positioned at the rear side of the conductive plug along the mechanical connection path of the battery pack and the charger.
9. A battery pack for use with the charger of claim 1, comprising a battery pack housing and a socket disposed on the housing, wherein the conductive plug is inserted into the socket to electrically connect the charger and the battery pack, and the battery pack is characterized in that: the battery pack shell is provided with an actuating piece, the actuating piece is positioned at the front part of the slot and corresponds to the first state of the charger along the mechanical connection path of the battery pack and the charger, and the actuating piece is separated from the on-off control piece; the actuating piece triggers the on-off control piece corresponding to the second state of the charger; the mechanical connection action of the battery pack and the charger enables the actuating piece to trigger the on-off control piece, the actuating piece is a rib plate arranged on the end face where the slot opening is located, a long groove extending along the mechanical connection path of the battery pack and the charger is arranged on the shell of the charger, the long groove is adjacent to the conductive plug, the on-off control piece is arranged in the long groove, and in a second state of the charger, the rib plate stretches into the long groove to trigger the on-off control piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515272.3A CN108539827B (en) | 2018-05-25 | 2018-05-25 | Charger and battery pack matched with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810515272.3A CN108539827B (en) | 2018-05-25 | 2018-05-25 | Charger and battery pack matched with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108539827A CN108539827A (en) | 2018-09-14 |
| CN108539827B true CN108539827B (en) | 2024-03-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810515272.3A Active CN108539827B (en) | 2018-05-25 | 2018-05-25 | Charger and battery pack matched with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108539827B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5780993A (en) * | 1995-11-17 | 1998-07-14 | Tsang; John Moong Hung | Combination battery charger and power source for electrically powered devices |
| 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 |
| CN105896675A (en) * | 2016-06-04 | 2016-08-24 | 无锡小刀电动科技股份有限公司 | Safety charging seat |
| CN205910530U (en) * | 2016-06-24 | 2017-01-25 | 零度智控（北京）智能科技有限公司 | Power control system , remote controller and yun tai |
| CN206133045U (en) * | 2016-09-30 | 2017-04-26 | 南京信息工程大学 | Rain gage bucket is from detecting system |
| CN208445305U (en) * | 2018-05-25 | 2019-01-29 | 天佑电器（苏州）有限公司 | Charger and battery pack used in conjunction with |
-
2018
- 2018-05-25 CN CN201810515272.3A patent/CN108539827B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5780993A (en) * | 1995-11-17 | 1998-07-14 | Tsang; John Moong Hung | Combination battery charger and power source for electrically powered devices |
| 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 |
| CN105896675A (en) * | 2016-06-04 | 2016-08-24 | 无锡小刀电动科技股份有限公司 | Safety charging seat |
| CN205910530U (en) * | 2016-06-24 | 2017-01-25 | 零度智控（北京）智能科技有限公司 | Power control system , remote controller and yun tai |
| CN206133045U (en) * | 2016-09-30 | 2017-04-26 | 南京信息工程大学 | Rain gage bucket is from detecting system |
| CN208445305U (en) * | 2018-05-25 | 2019-01-29 | 天佑电器（苏州）有限公司 | Charger and battery pack used in conjunction with |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108539827A (en) | 2018-09-14 |
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