CN114447507B - Battery pack, electric tool and power supply system - Google Patents

Battery pack, electric tool and power supply system Download PDF

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Publication number
CN114447507B
CN114447507B CN202110596913.4A CN202110596913A CN114447507B CN 114447507 B CN114447507 B CN 114447507B CN 202110596913 A CN202110596913 A CN 202110596913A CN 114447507 B CN114447507 B CN 114447507B
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CN
China
Prior art keywords
battery pack
interface
power supply
type
limiting
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.)
Active
Application number
CN202110596913.4A
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Chinese (zh)
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CN114447507A (en
Inventor
刘传君
罗明
李保安
庄宪
严安
霍晓辉
李志远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Globe Jiangsu Co Ltd
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Globe Jiangsu Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN202011228201.9A external-priority patent/CN112259866A/en
Application filed by Globe Jiangsu Co Ltd filed Critical Globe Jiangsu Co Ltd
Priority to CA3220576A priority Critical patent/CA3220576A1/en
Priority to PCT/CN2022/087124 priority patent/WO2022247517A1/en
Priority to EP22810250.5A priority patent/EP4350866A1/en
Priority to AU2022282142A priority patent/AU2022282142A1/en
Publication of CN114447507A publication Critical patent/CN114447507A/en
Application granted granted Critical
Publication of CN114447507B publication Critical patent/CN114447507B/en
Priority to US18/519,071 priority patent/US20240088506A1/en
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Anticipated expiration legal-status Critical

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    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • 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
    • H01M10/4285—Testing apparatus
    • 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
    • H01M10/44—Methods for charging or discharging
    • H01M10/446—Initial charging measures
    • 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
    • H01M10/44—Methods for charging or discharging
    • H01M10/448—End of discharge regulating measures
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
    • 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)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a battery pack, an electric tool and a power supply system, wherein the battery pack comprises a battery pack shell, wherein a battery cell assembly and a circuit board are installed in the battery pack shell, and the circuit board is electrically connected with the battery cell assembly; the insertion part is arranged on the top surface of the battery pack shell; the first power supply terminal is arranged on the inserting end of the inserting part and electrically connected with the circuit board and used as a discharging port; the first Type-C interface is arranged on the inserting end of the inserting part and electrically connected with the circuit board, and the first Type-C interface is used as a communication port. When the battery pack can discharge the electric tool through the first power supply terminal, the battery pack can communicate with the main control of the electric tool through the first Type-C interface, and the controllable control of the whole discharging process and the protection of the battery pack are realized.

Description

Battery pack, electric tool and power supply system
Technical Field
The invention relates to the technical field of battery packs, in particular to a battery pack, an electric tool and a power supply system.
Background
The garden tool is a maintenance device for greening landscapes of human beings, takes maintenance of lawns, hedges, protection of flowers and plants and trees as operation objects, and replaces most of mechanized electric tools represented by manual labor.
In recent years, with the development of battery material technology, the application range of lithium batteries has been greatly increased. The garden instrument product on the existing market has used a large amount, and the application mode is that copper pipe connection terminal gives corresponding garden instrument power supply, and current electricity discharge interface and function singleness are discharging the in-process, no matter whether there is unusual trouble or battery when undervoltage in the circuit that discharges of battery package, still discharge to garden instrument, can not effectual protection battery package.
In view of the above problems, it is desirable to provide a battery pack, an electric tool and a power supply system to solve the above problems.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a battery pack, an electric tool and a power supply system, which are used to solve the problem that the battery pack is easily damaged due to a single discharge interface and function in the prior art.
To achieve the above and other related objects, the present invention provides a battery pack, comprising:
the battery pack comprises a battery pack shell, a battery pack body and a battery pack, wherein the battery pack shell is internally provided with an electric core assembly and a circuit board, and the circuit board is electrically connected with the electric core assembly;
the inserting part is arranged on the top surface of the battery pack shell;
the first power supply terminal is arranged on the inserting end of the inserting part and electrically connected with the circuit board and used as a discharging port;
the first Type-C interface is arranged on the inserting end of the inserting part and electrically connected with the circuit board, and the first Type-C interface is used as a communication port;
the battery pack can be inserted into a battery plug interface of the electric tool through the plug part, discharges electricity to the electric tool through the first power supply terminal, and communicates with a tool side main control of the electric tool through the first Type-C interface.
In an embodiment of the present invention, the first power supply terminal includes a first discharge port P + and a first discharge port P-, and the first Type-C interface is located between the first discharge port P + and the first discharge port P-.
In an embodiment of the present invention, two sides of the insertion portion are provided with slide rails.
In an embodiment of the invention, a limiting member is disposed at the top of the battery pack, the limiting member is located at one side of the insertion part far from the insertion end, and the limiting member includes a limiting main body part, and a limiting protrusion part and a limiting pressing part which are integrally formed and disposed at two ends of the limiting main body part.
In an embodiment of the invention, the top of the battery pack is further provided with a limiting installation groove for installing the limiting member and an installation groove cover for covering the limiting installation groove, and the installation groove cover is provided with a first opening and a second opening for extending the limiting protruding portion and the limiting pressing portion.
In an embodiment of the present invention, an elastic element is disposed between the position-limiting element and the bottom of the position-limiting installation groove.
In an embodiment of the invention, a limiting mounting bump is disposed in the middle of the limiting mounting groove, a limiting through hole matched with the limiting mounting bump is disposed in the middle of the limiting main body, and the limiting member is sleeved on the limiting mounting bump through the limiting through hole.
In an embodiment of the invention, the first Type-C interface is located between the first power supply terminals.
In an embodiment of the invention, the first Type-C interface is further used as an auxiliary power port, and the battery pack provides an activation power for a tool side main control and MOS drive unit of the electric tool through the first Type-C interface.
To achieve the above and other related objects, the present invention also provides a power tool powered by a battery pack including a battery pack case, a socket provided on the battery pack case, and a first power supply terminal and a first Type-C interface provided on an insertion end of the socket, the power tool comprising:
a tool body;
the battery socket is arranged on the tool body;
the second Type-C interface is arranged at the bottom end of the battery socket and is used as a communication port, and the second Type-C interface is used for being connected with the first Type-C interface;
the second power supply terminal is arranged at the bottom end of the battery socket and is used for being connected with the first power supply terminal.
In an embodiment of the invention, the electric tool includes one of a grass trimmer, a pruner, a blower, a chain saw, a grass pusher, a cleaning machine, a dust collector, an electric drill, an electric hammer, a riding mower, an intelligent mower, and an intelligent cleaning device.
In an embodiment of the invention, a side wall of the battery socket is provided with a guide groove.
In an embodiment of the present invention, a limiting clamping groove is disposed at an end of the bottom of the battery socket close to the insertion end.
In an embodiment of the present invention, the second power supply terminal includes a second P + terminal and a second P-terminal matched with each terminal of the first power supply terminal.
In an embodiment of the invention, the second Type-C interface is located between the second power supply terminals.
In an embodiment of the invention, the second Type-C interface is further used as an auxiliary power input port, and the battery pack supplies power to a tool side main control and MOS drive unit of the electric tool through the second Type-C interface.
To achieve the above and other related objects, the present invention provides a power supply system, including an electric tool and a battery pack adapted to each other;
the battery pack comprises a battery pack shell, a plug-in part, a first power supply terminal and a first Type-C interface, wherein an electric core assembly and a circuit board are installed in the battery pack shell, the circuit board is electrically connected with the electric core assembly, the plug-in part is arranged on the top surface of the battery pack shell, the first power supply terminal is arranged on an insertion end of the plug-in part and is electrically connected with the circuit board, the first Type-C interface is arranged on an insertion end of the plug-in part and is electrically connected with the circuit board, the first power supply terminal serves as a discharge port, and the first Type-C interface serves as a communication port;
the electric tool is provided with a battery plug interface, a second Type-C interface and a second power supply terminal, wherein the second Type-C interface and the second power supply terminal are arranged at the bottom end of the battery plug interface;
when the battery pack is inserted into the battery insertion port through the insertion part, the first power supply terminal is connected with the second power supply terminal, the first Type-C interface is connected with the second Type-C interface, the battery pack supplies power to the electric tool, and the battery pack and the electric tool are communicated through the first Type-C interface and the second Type-C interface.
In an embodiment of the present invention, a side wall of the battery socket is provided with a guide groove, and two sides of the socket portion are provided with a slide rail matching with the guide groove.
In an embodiment of the invention, the electric tool includes one of a grass trimmer, a pruner, a blower, a chain saw, a grass pusher, a cleaning machine, a dust collector, an electric drill, an electric hammer, a riding mower, an intelligent mower, and an intelligent cleaning device.
In an embodiment of the present invention, a limiting member is disposed at the top of the battery pack, and the limiting member includes a limiting main body portion, and a limiting protrusion portion and a limiting pressing portion that are integrally formed and disposed at two ends of the limiting main body portion; and one end of the bottom of the battery socket, which is close to the insertion end, is provided with a limiting clamping groove matched with the limiting bulge.
In an embodiment of the invention, a limiting installation groove for installing the limiting member and an installation groove cover for covering the limiting installation groove are arranged at the top of the battery pack, and a first opening and a second opening for extending the limiting protruding portion and the limiting pressing portion are arranged on the installation groove cover.
In an embodiment of the invention, an elastic element is disposed between the limiting member and the bottom of the limiting installation groove.
In an embodiment of the present invention, a limiting installation bump is disposed in a middle of the limiting installation groove, a limiting through hole matched with the limiting installation bump is disposed in a middle of the limiting main body, and the limiting member is sleeved on the limiting installation bump through the limiting through hole.
In an embodiment of the present invention, the first power supply terminal includes a first P + terminal and a first P-terminal; the second power supply terminal includes a second P + terminal and a second P-terminal that match the respective terminals of the first power supply terminal.
In an embodiment of the present invention, the first Type-C interface is located between the first power supply terminals; the second Type-C interface is located between the second power supply terminals.
In an embodiment of the invention, the first Type-C interface is further used as an auxiliary power port, the second Type-C interface is further used as an auxiliary power input port, and the battery pack provides an activation power for the tool side main control and MOS drive unit of the electric tool through the first Type-C interface.
When the battery pack can discharge the electric tool through the first power supply terminal, the main control of the electric tool and the power supply driven by the MOS are controlled through the first Type-C interface, and the controllable control of the whole discharging process and the protection of the battery pack are realized.
Drawings
Fig. 1 is a schematic structural diagram of a power tool and a battery pack of the power supply system of the invention.
Fig. 2 shows a simplified schematic block diagram of the power tool and battery pack of the power supply system of the present invention.
Fig. 3 is a schematic perspective view of the power tool of the power supply system of the present invention.
Fig. 4 shows a bottom view of the power tool of the power supply system of the present invention.
Fig. 5 is a schematic perspective view of a battery pack of the power supply system of the present invention.
Fig. 6 is an exploded view of the battery pack according to the present invention.
Fig. 7 is a block diagram showing a circuit configuration of the power supply system of the present invention.
Fig. 8 is a schematic diagram illustrating a discharging process of the power supply system according to the present invention.
Description of the reference symbols
A battery pack 100; an upper case 11; an activation unit 110; a plug-in part 1101; a slide rail 1102; a stopper 111; a limit pressing part 1111; a stopper boss 1112; a limiting through hole 1115; a limit mounting groove 112; a mounting slot cover 1121; a first opening 1122; a second opening 1123; a limit mounting bump 1124; a Type-C interface 113; a lower case 12; an electric core assembly 120; a first Type-C interface 122; a circuit board 13; a first DC-DC unit 1301; a terminal mounting hole 131; a first power supply terminal 132; a cell support 14; a detection unit 170; a first main control unit 1801; a first Type-C communication processing unit 192; a power tool 30; a tool body 31; a handle 32; a base 33; a battery jack 331; the guide groove 332; a limit clamp groove 333; a second Type-C interface 34; a second power supply terminal 35; the second main control unit 361; the MOS drive unit 362; a power MOS unit 363; a second Type-C communication processing unit 364; a second DC-DC unit 365; a motor 37; a switch 38.
Detailed Description
The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to fig. 1-8. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
As shown in fig. 1 and 2, the present embodiment describes a power supply system, which includes a power tool 30 and a battery pack 100, the battery pack 100 is adapted to supply power to the power tool 30, and the power tool 30 includes, but is not limited to, a grass trimmer, a hair dryer, a pruner, a chain saw, a grass trimmer, a washing machine, a dust collector, an intelligent lawn mower, an intelligent cleaning device, and a riding lawn mower. The battery pack 100 is provided with a first Type-C interface 122 and a first power supply terminal 132, the electric tool 30 is provided with a second Type-C interface 34 and a second power supply terminal 35 corresponding to the battery pack 100, the battery pack 100 can discharge power to the electric tool 30 through the first power supply terminal 132, and the first Type-C interface 122 provides an active power supply and communication for a tool side main control (see the main control unit 2 in fig. 7, defined as a second main control unit 361) and a MOS drive unit 362 (see fig. 7) of the electric tool 30, so that the controllable control of the whole discharging process and the protection of the battery pack 100 are realized.
Referring to fig. 1-4, in the present embodiment, the electric tool 30 includes a tool body 31 having a functional module, a handle 32 disposed on one side of the tool body 31, a base 33 disposed on one end of the handle 32 away from the tool body 31, a battery socket 331 disposed on one side of the base 33 away from the handle 32 for inserting the battery pack 100, and a second Type-C interface 34 and a second power supply terminal 35 disposed at a bottom end (an end away from the insertion end) of the battery socket 331, wherein the base 33 is detachably connected to the battery pack 100.
As shown in fig. 5 and 6, in the present embodiment, the battery pack 100 includes a battery pack case, a socket 1101, a first Type-C interface 122 as an auxiliary power port and a communication port for supplying power and communication to the tool-side main control and MOS drive unit 362, and a first power supply terminal 132 as a discharge port. The battery pack shell is internally provided with the battery core assembly 120 and the circuit board 13, the circuit board 13 is electrically connected with the battery core assembly 120, and the insertion part 1101 is arranged on the top surface of the battery pack shell; the first power supply terminal 132 is disposed on the insertion end of the insertion portion 1101, and the first power supply terminal 132 is electrically connected to the circuit board 13; the first Type-C interface 122 is disposed on the insertion end of the insertion portion 1101, and the first Type-C interface 122 is located between the first power supply terminals 132 and electrically connected to the circuit board 13; the battery pack 100 can be inserted into the battery socket 331 of the electric tool 30 through the socket 1101, discharges the electric tool 30 through the first power supply terminal 132, and provides an active power supply and communication for the tool-side main control and MOS drive unit 362 of the electric tool 30 through the first Type-C interface 122, so as to realize the controllable control of the whole discharging process and the protection of the battery pack 100. It is understood that, in other embodiments, the first Type-C interface 122 may also be used as a communication port only, the battery pack 100 performs communication through the tool side main control of the first Type-C interface 122, and the battery pack 100 provides power to the tool side main control and MOS driving unit 362 through the first power supply terminal 132. It is understood that in other embodiments, the first Type-C interface 122 may also be located on one side of the first power terminal 132.
As shown in fig. 5 and fig. 6, in the present embodiment, the electric core assembly 120 includes a plurality of electric cores, the plurality of electric cores are respectively installed in the electric core supports 14, the electric core supports 14 are located in the casing of the battery pack 100, the plurality of electric cores can be connected in series and parallel through electrode plates, the electric core assembly 120 is electrically connected to the circuit board 13, each electric core is used for storing electric energy after being combined, and each electric core can discharge electricity to the electric tool 30 through the first power supply terminal 132, and provide activation power and communication for the tool side main control and MOS driving unit 362 of the electric tool 30 through the first Type-C interface 122.
As shown in fig. 5 and fig. 6, in the present embodiment, the top of the battery pack 100 is provided with a plug portion 1101 matching with the battery plug port 331, the plug portion 1101 of the battery pack 100 is inserted into the battery plug port 331 from one end (i.e., an insertion end) of the opening of the battery plug port 331, and the battery plug port 331 at least partially wraps around the plug portion 1101, so as to prevent the plug portion 1101 of the battery pack 100 from coming out of the opening of the battery plug port 331, so as to ensure the stability of the battery pack 100. Specifically, the battery pack shell comprises an upper shell 11 (a first shell) and a lower shell 12 (a second shell), the upper shell 11 is fixedly connected with the lower shell 12, the electric core assembly 120 and the circuit board 13 are contained in a containing cavity formed by assembling the upper shell 11 and the lower shell 12, the inserting part 1101 is arranged on the top surface of the upper shell 11, two sides of the inserting part 1101 are provided with sliding rails 1102, a first Type-C interface 122 is arranged in a Type-C interface 113 at the inserting end of the inserting part 1101 and is positioned between the sliding rails 1102 at two sides of the inserting part 1101, and a first power supply terminal 132 is arranged in the Type-C interface 113 at the inserting end of the inserting part 1101. When the electric tool 30 is connected with the battery pack 100 through the slide rail 1102, the first Type-C interface 122 is electrically connected with the second Type-C interface 34 of the external electric tool 30, the first power supply terminal 132 is electrically connected with the second power supply terminal 35, and the battery pack 100 can discharge to the electric tool 30 through the first power supply terminal 132 to supply power to the functional module of the electric tool 30 to realize the corresponding function of the electric tool 30, and can also provide activation power and communication for the tool side main control and MOS driving unit 362 of the electric tool 30 through the first Type-C interface 122 during discharging, so that the controllable control of the whole discharging process and the protection of the battery pack 100 are realized.
It should be understood that the first Type-C interface 122 and the second Type-C interface 34 are USB standard interfaces, and the types of the interfaces are two-sided types capable of adapting to forward and reverse insertion, and can implement power transmission and data interaction, and in this embodiment, serve as an auxiliary power supply and a communication port. The first Type-C interface 122 and the second Type-C interface 34 pins may each include VBUS, CC, D +, D-, GND.
It should be understood that the first power supply terminal 132 and the second power supply terminal 35 may be a power strip port commonly used in garden tools, and may be selected from various types, in this embodiment, the first power supply terminal 132 may include a first P + terminal and a first P-terminal as a discharge port, and the second power supply terminal 35 may include a second P + terminal and a second P-terminal as a discharge port matching with the respective terminals of the first power supply terminal.
Referring to fig. 1-6, in the present embodiment, the sidewall of the battery socket 331 of the base 33 is provided with a guide slot 332, the guide slot 322 may be an L-shaped slot, for example, and the sidewall of the socket 1101 of the battery pack 100 is provided with a slide rail 1102 matching with the guide slot 332, when the battery pack 100 is inserted into the base 33, the slide rail 1102 is inserted into the guide slot 332, so as to prevent the battery pack 100 from coming out of the battery socket 331 from the non-insertion direction.
Referring to fig. 1 to 6, the top of the battery pack 100 is provided with a limiting member 111, and the limiting member 111 includes a limiting main body, and a limiting protrusion 1112 and a limiting pressing portion 1111 integrally formed at two ends of the limiting main body. A limit slot 333 corresponding to the limit protrusion 1112 of the limit member 111 is provided at an end of the bottom of the battery socket 331 of the base 33 near the insertion end. When the battery pack 100 is inserted into the base 33, the limiting protrusion 1112 extends into the limiting slot 333, and the limiting protrusion 1112 and the limiting slot 333 are matched with each other to limit the battery pack 100 to be separated from the battery socket 331 of the base 33 along the insertion direction.
Referring to fig. 1 to 6, in the present embodiment, the top of the battery pack 100 is provided with a limit mounting groove 112 and a mounting groove cover 1121 for covering the limit mounting groove 112, and the limit mounting groove 112 is disposed at an end of the insertion protrusion portion away from the insertion end. The limiting installation groove 112 is used for installing the limiting piece 111, the installation groove cover 1121 covers the limiting installation groove 112, the installation groove cover 1121 is provided with a first opening 1122 and a second opening 1123 at positions corresponding to the limiting protrusion 1112 and the limiting pressing portion 1111, the limiting protrusion 1112 and the limiting pressing portion 1111 are exposed from the first opening 1122 and the second opening 1123, and the limiting protrusion 1112 needs to protrude out of the surface of the installation groove cover 1121 under the action of an elastic element when the battery pack 100 is detached and inserted into the base 33.
Referring to fig. 1-6, in the present embodiment, a limiting installation bump 1124 is disposed in a middle portion of the limiting installation groove 112, a limiting through hole 1115 matching with the limiting installation bump 1124 is disposed in a middle portion of the limiting body portion of the limiting element 111, the limiting element 111 is sleeved on the limiting installation bump 1124 through the limiting through hole 1115, and the limiting installation bump 1124 can play a role in guiding. An elastic element (not shown) is further disposed between the limiting member 111 and the bottom surface of the limiting mounting groove 112, the elastic element can reset the limiting member 111 when the battery pack 100 is detached from or inserted into the base 33, so that the limiting protrusion 1112 and the limiting pressing portion 1111 respectively extend out of the first opening 1122 and the second opening 1123, when the battery pack 100 is inserted into the base 33, the limiting protrusion 1112 of the limiting member 111 is inserted into the limiting slot 333 of the base 33 to perform a limiting function, the battery pack 100 is prevented from sliding out of the base 33 in the first direction, when the battery pack 100 is released, only the limiting pressing portion 1111 needs to be pressed downward, the limiting protrusion 1112 synchronously moves downward along with the limiting pressing portion 1111 and retracts into the corresponding opening of the mounting groove cover 1121, so that the limiting protrusion 1112 is disengaged from the limiting slot 333, and at this time, the battery pack 100 can be removed from the base 33 in the opposite direction of insertion. As an example, the elastic elements may include two elastic elements, one elastic element is disposed between the limit protrusion 1112 and the bottom surface of the limit installation groove 112, the other elastic element is disposed between the limit pressing portion 1111 and the bottom surface of the limit installation groove 112, and structures for installing the elastic elements are disposed on the limit protrusion 1112, the bottom surface of the limit installation groove 112, and the limit pressing portion 1111 at positions corresponding to the elastic elements.
Fig. 7 shows a block diagram of the circuit configuration of the power supply system of the present embodiment, including the discharge control circuit of the battery pack 100 and the motor drive circuit of the electric power tool 30. The discharging control circuit of the battery pack 100 can be integrated on the circuit board 13 of the battery pack 100, the discharging control circuit is connected in series between the first Type-C interface 122 and the electric core assembly 120 of the battery pack 100, the discharging control circuit is also connected in series between the first power supply terminal 132 and the electric core assembly 120 of the battery pack 100, the discharging control circuit is used for controlling the electric core assembly 120 to discharge the electric tool 30 through the first power supply terminal 132, and the first Type-C interface 122 provides an active power supply and communication for the tool side main control (the main control unit 2 in fig. 7, defined as the second main control unit 361) and the MOS driving unit 362 of the electric tool 30, so as to realize the controllable control of the whole discharging process and the protection of the battery pack 100.
Referring to fig. 7, the discharge control circuit includes a detection unit 170, a first main control unit 1801 (main control unit 1 in fig. 7), a first DC-DC unit 1301 (DC-DC unit 1 in fig. 7), a first Type-C communication processing unit 192 (communication processing unit 1 in fig. 7), an activation unit 110, and a key. The positive terminal of the electric core assembly 120 is connected to the first P + terminal (P +) of the first power supply terminal 132 and the first DC-DC unit 1301 respectively, the first DC-DC unit 1301 is further connected to the first Type-C interface 122 and the first main control unit 1801 respectively, the first main control unit 1801 is further connected to the detection unit 170, the activation unit 110 and the first Type-C communication processing unit 192 respectively, the first Type-C communication processing unit 192 is further connected to the first Type-C interface 122 and the activation unit 110 respectively, the key is connected to the activation unit 110, and the negative terminal of the electric core assembly 120 is connected to the first P-terminal (P-) of the battery pack in fig. 7 and the first Type-C interface 122 of the first power supply terminal 132 respectively.
The detection unit 170 may include a current detection unit, a voltage detection unit AFE and a temperature detection unit, which are respectively connected to the first main control unit 1801, the current detection unit is configured to detect a discharge loop current of the battery pack 100 and transmit a detection result to the first main control unit 1801, the voltage detection unit AFE is configured to detect a single cell voltage in the cell assembly 120 and transmit a detection result to the first main control unit 1801, and the temperature detection unit is configured to detect and monitor a cell temperature and transmit a detection result to the first main control unit 1801; the first main control unit 1801 is configured to analyze data information of the battery detection unit 170, including information of a single cell voltage, a loop current, a cell temperature, and then send an instruction to control power on and power off of the DC-DC unit; the first DC-DC unit 1301 is used to provide VCC power; the first Type-C communication processing unit 192 is configured to process communication between external Type-C communication and the first main control unit 1801; the activation unit 110 is configured to receive an activation signal from the outside, including a KEY signal (KEY) and a CC signal, and complete a power-on operation of the first main control unit 1801, and after the power-on operation of the first main control unit 1801 is completed, the first main control unit communicates with the outside through the first Type-C communication processing unit 192.
Referring to fig. 7, the motor driving circuit of the electric tool 30 includes a second main control unit 361 (the main control unit 2 in fig. 7), a second DC-DC unit 365 (the DC-DC unit 2 in fig. 7), a second Type-C communication processing unit 364 (the communication processing unit 2 in fig. 7), a MOS driving unit 362, a power MOS unit 363, and a switch 35. The second Type-C interface 34 is respectively connected to the second DC-DC unit 365, the MOS driving unit 362, the second Type-C communication processing unit 364, and the second P-terminal (P-) of the second power supply terminal 35 (fig. 7), the second Type-C communication processing unit 364 is connected to the second main control unit 361, the second main control unit 361 is further respectively connected to the MOS driving unit 362 and the second DC-DC unit 365, the power MOS unit 363 is respectively connected to the second P + terminal (P +) of the second power supply terminal 35 (fig. 7), the second P-terminal, the MOS driving unit 362, and the motor 37, and the switch 35 is located between the second P-terminal of the second power supply terminal 35 and the power MOS unit 363.
The switch 35 is used as a master switch of the tool loop, and the second master control unit 361 is used for processing communication with the battery pack 100 and sending a PWM signal to the MOS drive unit 362; the second Type-C communication processing unit 364 is configured to process external Type-C communication and communicate with the second main control unit 361; the second DC-DC unit 365 is used for providing a suitable power VCC1 for the second main control unit 361; the MOS driving unit 362 is configured to receive the PWM signal from the second main control unit 361 to drive the power MOS unit 363; the power MOS unit 363 is used for providing proper voltage and current for the motor 37 to drive the motor 37; the motor 37 functions as a power unit of the electric power tool 30.
Referring to fig. 7, when the electric tool 30 is connected to the battery pack 100, the first Type-C interface 122 is connected to the second Type-C interface 34, and the first power supply terminal 132 is connected to the second power supply terminal 35. The battery side provides the power VCC to electric tool 30 after stepping down through first DC-DC unit 1301, and the power VCC supplies power to MOS drive unit 362 of instrument side through Type-C interface connection on the one hand, and on the other hand the power VCC provides power VCC1 for instrument survey master control (second master control unit 361) after stepping down through second DC-DC unit 365 of instrument side. The power VCC of the tool side is provided by the battery side, the first DC-DC unit 1301 providing the power VCC can be controlled by the first main control unit 1801 of the battery pack 100, when the battery pack 100 is under-voltage or the battery pack 100 receives a discharge stop signal sent by the electric tool 30 through the communication function of the first Type-C interface 122, the first main control unit 1801 of the battery pack 100 powers down the first DC-DC unit 1301, so that the VCC power on the tool control board is cut off, thus even if the switch 35 of the electric tool 30 is in a closed state, the whole system of the tool side can be closed, so that the whole discharge process is controllable, and the protection of the battery pack 100 during discharge is realized.
It should be noted that, in this embodiment, the first main control Unit 1801 and the second main control Unit 361 are Central Processing Units (CPUs) of a microcomputer Digital display sensing processor system, and may be configured with corresponding operating systems, control interfaces, and the like, specifically, may be a Digital logic processor which can be used for automation control, such as a single chip microcomputer, a DSP (Digital Signal Processing), an ARM (Advanced RISC Machines, ARM processors, and the like, and may load a control instruction to a memory at any time for storage and execution, and meanwhile, may be internally provided with units such as a CPU instruction and a data memory, an input/output Unit, a power module, and a Digital analog, and may be specifically set according to actual use conditions, and this scheme does not limit this.
Referring to fig. 8, the discharging process of the battery pack 100 of the present embodiment is as follows: the power tool 30 is connected to the battery pack 100, the switch 35 on the power tool is turned on, and the button is pressed to activate the battery pack 100; after the battery pack 100 is activated, the first main control unit 1801 is powered on and initialized, then the state of the battery pack starts to be detected, whether the battery pack is abnormal or not is judged, if the battery pack is abnormal, discharging is prohibited, if the battery pack is abnormal, the first main control unit 1801 enables the first DC-DC unit 1301 to output VCC, the VCC passes through the second DC-DC unit 365 at the tool side and then outputs VCC1 to the second main control unit 361, and thus the second main control unit 361 is powered on and initialized; after the second main control unit 361 is powered on and initialized, communication handshake with the battery pack is started, and after the communication handshake is successful, the battery pack 100 starts to discharge normally; in the normal discharging process, the first main control unit 1801 monitors parameters such as voltage, current, and cell temperature of the electrical core assembly 120 in real time through the detection unit 170, and meanwhile, the electrical quantity calculation module calculates the SOC in real time, stops discharging when the SOC is determined to be 5% (or other suitable values), and stops discharging once it is determined that a single cell is abnormal or the cell temperature is abnormal.
In summary, when the battery pack of the present invention discharges the electric tool through the first power supply terminal, the main control of the electric tool and the MOS-driven power supply are controlled through the first Type-C interface, so as to realize the controllable control of the whole discharging process and the protection of the battery pack.
In the description herein, numerous specific details are provided, such as examples of components and/or methods, to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of embodiments of the invention.
It will also be appreciated that one or more of the elements shown in the drawings/figures can also be implemented in a more separated or integrated manner, or even removed because it is not operational in certain circumstances or may be provided as useful in accordance with a particular application.
Additionally, any reference arrows in the drawings/figures should be considered only as exemplary, and not limiting, unless otherwise expressly specified. Further, as used herein, the term "or" is generally intended to mean "and/or" unless otherwise indicated. Combinations of components or steps will also be considered as being noted where terminology is foreseen as rendering the ability to separate or combine is unclear.
The above description of illustrated embodiments of the invention, including what is described in the abstract of the specification, is not intended to be exhaustive or to limit the invention to the precise forms disclosed herein. While specific embodiments of, and examples for, the invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention, as those skilled in the relevant art will recognize and appreciate. As indicated, these modifications may be made to the present invention in light of the foregoing description of illustrated embodiments of the present invention and are to be included within the spirit and scope of the present invention.
The systems and methods have been described herein in general terms as the details aid in understanding the invention. Furthermore, various specific details have been set forth in order to provide a thorough understanding of the embodiments of the invention. One skilled in the relevant art will recognize, however, that an embodiment of the invention can be practiced without one or more of the specific details, or with other apparatus, systems, assemblies, methods, components, materials, parts, and/or the like. In other instances, well-known structures, materials, and/or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the invention.
Thus, although the present invention has been described herein with reference to particular embodiments thereof, a latitude of modification, various changes and substitutions are intended in the foregoing disclosures, and it will be appreciated that in some instances some features of the invention will be employed without a corresponding use of other features without departing from the scope and spirit of the invention as set forth. Thus, many modifications may be made to adapt a particular situation or material to the essential scope and spirit of the present invention. It is intended that the invention not be limited to the particular terms used in following claims and/or to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the invention is to be determined solely by the appended claims.

Claims (19)

1. A battery pack, comprising:
the battery pack comprises a battery pack shell, a battery pack body and a battery pack, wherein the battery pack shell is internally provided with an electric core assembly and a circuit board, and the circuit board is electrically connected with the electric core assembly;
the insertion part is arranged on the top surface of the battery pack shell;
the first power supply terminal is arranged on the inserting end of the inserting part and electrically connected with the circuit board and used as a discharging port;
the first Type-C interface is arranged on the inserting end of the inserting part and electrically connected with the circuit board, and the first Type-C interface is used as a communication port;
the battery pack can be inserted into a battery insertion port of the electric tool through the insertion part, discharges electricity to the electric tool through the first power supply terminal, and communicates with a tool side main control of the electric tool through the first Type-C interface;
the first power supply terminal includes a first discharge port P + and a first discharge port P-.
2. The battery pack of claim 1, wherein the first Type-C interface is located between the first discharge port P + and the first discharge port P-.
3. The battery pack according to claim 1, wherein slide rails are provided on both sides of the insertion part.
4. The battery pack according to claim 1, wherein a limiting member is disposed on the top of the battery pack, the limiting member is disposed on one side of the insertion portion away from the insertion end, and the limiting member comprises a limiting main body portion, and a limiting protrusion portion and a limiting pressing portion which are integrally formed and disposed at two ends of the limiting main body portion.
5. The battery pack according to claim 4, wherein a limiting installation groove for installing the limiting member and an installation groove cover for covering the limiting installation groove are further arranged at the top of the battery pack, and a first opening and a second opening for extending the limiting protruding portion and the limiting pressing portion are arranged on the installation groove cover.
6. The battery pack according to claim 5, wherein an elastic member is disposed between the stopper and the bottom of the stopper mounting groove.
7. The battery pack according to claim 5, wherein a limiting mounting protrusion is disposed at a middle portion of the limiting mounting groove, a limiting through hole matched with the limiting mounting protrusion is disposed at a middle portion of the limiting main body, and the limiting member is sleeved on the limiting mounting protrusion through the limiting through hole.
8. The battery pack of claim 1, wherein the first Type-C interface is located between the first power supply terminals.
9. The battery pack of claim 1, wherein the first Type-C interface further serves as an auxiliary power port, and the battery pack provides an activation power supply for a tool-side main control and MOS drive unit of the power tool through the first Type-C interface.
10. A power tool powered by a battery pack including a battery pack case, a plug part provided on the battery pack case, and a first power supply terminal and a first Type-C interface provided on an insertion end of the plug part, the first power supply terminal including a first discharge port P + and a first discharge port P-, the power tool comprising:
a tool body;
the battery socket is arranged on the tool body;
the second Type-C interface is arranged at the bottom end of the battery socket and is used as a communication port, and the second Type-C interface is used for being connected with the first Type-C interface;
the second power supply terminal is arranged at the bottom end of the battery socket and is used for being connected with the first power supply terminal;
the second power supply terminal includes a second P + terminal and a second P-terminal that are matched with the respective terminals of the first power supply terminal.
11. The power tool of claim 10, wherein the power tool comprises one of a lawn mower, a pruner, a blower, a chain saw, a lawnmower, a cleaner, a vacuum cleaner, an electric drill, an electric hammer, a riding mower, a smart lawn mower, and a smart cleaning device.
12. The power tool of claim 10, wherein the battery socket includes a guide slot formed in a side wall thereof.
13. The power tool of claim 10, wherein a limiting slot is disposed at an end of the bottom of the battery socket near the insertion end.
14. The power tool of claim 10, wherein the second Type-C interface is located between the second power supply terminals.
15. The power tool of claim 10, wherein the second Type-C interface further serves as an auxiliary power input port, and the battery pack provides power to a tool-side master control and MOS drive unit of the power tool through the second Type-C interface.
16. A power supply system is characterized by comprising a power tool and a battery pack which are matched with each other;
the battery pack comprises a battery pack shell, an insertion part, a first power supply terminal and a first Type-C interface, wherein an electric core assembly and a circuit board are installed in the battery pack shell, the circuit board is electrically connected with the electric core assembly, the insertion part is arranged on the top surface of the battery pack shell, the first power supply terminal is arranged on an insertion end of the insertion part and is electrically connected with the circuit board, the first Type-C interface is arranged on an insertion end of the insertion part and is electrically connected with the circuit board, the first power supply terminal is used as a discharge port, the first Type-C interface is used as a communication port, and the first power supply terminal comprises a first discharge port P + and a first discharge port P-;
the electric tool is provided with a battery plug interface, and a second Type-C interface and a second power supply terminal which are arranged at the bottom end of the battery plug interface, wherein the second Type-C interface is used as a communication port, and the second power supply terminal comprises a second P + terminal and a second P-terminal which are matched with the terminals of the first power supply terminal;
when the battery pack is inserted into the battery insertion port through the insertion part, the first power supply terminal is connected with the second power supply terminal, the first Type-C interface is connected with the second Type-C interface, the battery pack supplies power to the electric tool, and the battery pack and the electric tool communicate through the first Type-C interface and the second Type-C interface.
17. The power supply system of claim 16, wherein the power tool comprises one of a lawnmower, a pruner, a blower, a chainsaw, a lawnmower, a washer, a vacuum cleaner, an electric drill, an electric hammer, a riding mower, a smart mower, and a smart cleaning device.
18. The power supply system of claim 16, wherein the first Type-C interface is located between the first power terminals; the second Type-C interface is located between the second power supply terminals.
19. The power supply system of claim 16, wherein the first Type-C interface further serves as an auxiliary power port, the second Type-C interface further serves as an auxiliary power input port, and the battery pack provides an active power supply for the tool side master control and MOS drive unit of the power tool through the first Type-C interface.
CN202110596913.4A 2020-11-06 2021-05-28 Battery pack, electric tool and power supply system Active CN114447507B (en)

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CA3220576A CA3220576A1 (en) 2021-05-28 2022-04-15 Battery pack, power tool system, and charging system
PCT/CN2022/087124 WO2022247517A1 (en) 2021-05-28 2022-04-15 Battery pack, electric tool system, and charging system
EP22810250.5A EP4350866A1 (en) 2021-05-28 2022-04-15 Battery pack, electric tool system, and charging system
AU2022282142A AU2022282142A1 (en) 2021-05-28 2022-04-15 Battery pack, electric tool system, and charging system
US18/519,071 US20240088506A1 (en) 2021-05-28 2023-11-27 Battery pack, power tool system and charging system

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CN202011228201.9A CN112259866A (en) 2020-11-06 2020-11-06 Battery pack, electric tool and system
CN202022544944 2020-11-06
CN2020225449449 2020-11-06
CN2020112282019 2020-11-06

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CN202110596483.6A Pending CN114448010A (en) 2020-11-06 2021-05-28 Charging and discharging control system and method and battery pack
CN202110592719.9A Pending CN114448007A (en) 2020-11-06 2021-05-28 Adaptation device and charging system
CN202121189296.8U Active CN218548688U (en) 2020-11-06 2021-05-28 Adaptation device and tool system
CN202121180953.2U Active CN218548687U (en) 2020-11-06 2021-05-28 Charger and charging system
CN202110594839.2A Pending CN114448009A (en) 2020-11-06 2021-05-28 Battery pack, electric tool system and system
CN202121189685.0U Active CN220400799U (en) 2020-11-06 2021-05-28 Battery pack, electric tool and charging system
CN202110599060.XA Active CN114447533B (en) 2020-11-06 2021-05-28 Battery pack, power supply system and tool system
CN202121181551.4U Active CN215419646U (en) 2020-11-06 2021-05-28 Charger and charging system
CN202110594819.5A Pending CN114530899A (en) 2020-11-06 2021-05-28 Adaptation device and tool system
CN202110592720.1A Pending CN114448008A (en) 2020-11-06 2021-05-28 Multi-slot charger and charging system
CN202110599056.3A Pending CN114448012A (en) 2020-11-06 2021-05-28 Charging and discharging communication control system and method and battery pack
CN202121186466.7U Active CN218919168U (en) 2020-11-06 2021-05-28 Battery pack, power supply system and tool system
CN202121186384.2U Active CN214797631U (en) 2020-11-06 2021-05-28 Battery pack, electric tool and power supply system
CN202110597537.0A Pending CN114448011A (en) 2020-11-06 2021-05-28 Charging control system and method, battery pack and charging combination
CN202121182145.XU Active CN218939916U (en) 2020-11-06 2021-05-28 Waterproof battery pack
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CN202110592719.9A Pending CN114448007A (en) 2020-11-06 2021-05-28 Adaptation device and charging system
CN202121189296.8U Active CN218548688U (en) 2020-11-06 2021-05-28 Adaptation device and tool system
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CN202110594839.2A Pending CN114448009A (en) 2020-11-06 2021-05-28 Battery pack, electric tool system and system
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CN202110592720.1A Pending CN114448008A (en) 2020-11-06 2021-05-28 Multi-slot charger and charging system
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CN202121186384.2U Active CN214797631U (en) 2020-11-06 2021-05-28 Battery pack, electric tool and power supply system
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