WO2022028399A1 - 一种多压电池包、电动工具系统及充电系统 - Google Patents
一种多压电池包、电动工具系统及充电系统 Download PDFInfo
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- WO2022028399A1 WO2022028399A1 PCT/CN2021/110243 CN2021110243W WO2022028399A1 WO 2022028399 A1 WO2022028399 A1 WO 2022028399A1 CN 2021110243 W CN2021110243 W CN 2021110243W WO 2022028399 A1 WO2022028399 A1 WO 2022028399A1
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- battery pack
- voltage
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- state
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0445—Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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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
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
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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
- 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
- H01M50/247—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers
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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
- 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
- H01M50/269—Mechanical means for varying the arrangement of batteries or cells for different uses, e.g. for changing the number of batteries or for switching between series and parallel wiring
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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
- 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
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/42—Grouping of primary cells into batteries
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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
Definitions
- the invention relates to the technical field of battery packs, in particular to a multi-voltage battery pack, a power tool system and a charging system.
- the purpose of the present invention is to provide a multi-voltage battery pack, a power tool system and a charging system, and the multi-voltage battery pack provided by the present invention can provide various output voltages and quick switching of various output voltages.
- a multi-voltage battery pack provided by the present invention is used to cooperate with electric tools with different working voltages, including:
- a battery pack housed in the housing, the battery pack comprising:
- the first battery pack includes a plurality of battery cells connected in series;
- the second battery pack includes a plurality of battery cells connected in series;
- the third battery pack includes a plurality of battery cells connected in series;
- the fourth battery pack includes a plurality of battery cells connected in series;
- the battery interface is arranged on the housing for cooperating with the power tool
- a switch assembly disposed in the casing and electrically connected to the battery pack, the switch assembly has a first state, a second state and a third state;
- the multi-voltage battery pack When the switching assembly is in the first state, the multi-voltage battery pack outputs a first working voltage
- the multi-voltage battery pack When the switching assembly is in the second state, the multi-voltage battery pack outputs a second working voltage
- the multi-voltage battery pack When the switching assembly is in a third state, the multi-voltage battery pack outputs a third working voltage
- the third working voltage is greater than the second working voltage, and the second working voltage is greater than the first working voltage.
- the first battery pack is provided with a first positive electrode and a first negative electrode
- the second battery pack is provided with a second positive electrode and a second negative electrode
- the third battery pack is provided with a third A positive electrode and a third negative electrode
- the fourth battery pack is provided with a fourth positive electrode and a fourth negative electrode.
- the switching component when the switching component is in the first state, the switching component is located in the first position, when the switching component is in the second state, the switching component is located in the second position, when all When the switch assembly is in the third state, the switch assembly is in the third position.
- the first positive electrode, the second positive electrode, the third positive electrode, and the fourth positive electrode are connected to each other, and the first negative electrode, the second negative electrode, and the third negative electrode are connected to each other.
- the fourth negative electrode is connected to each other, the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are connected in parallel with each other.
- the switching component when the switching component is in the second state, the first positive electrode and the second positive electrode are connected to each other, and the first negative electrode, the second negative electrode, the third positive electrode and the fourth positive electrode are connected to each other, so The third negative electrode and the fourth negative electrode are connected to each other, and the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are in a parallel-series state.
- the switching component when the switching component is in the second state, the first positive electrode and the third positive electrode are connected to each other, the first negative electrode and the second positive electrode are connected to each other, and the third negative electrode and the fourth positive electrode are connected to each other. connected to each other, the second negative electrode and the fourth negative electrode are connected to each other, and the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are in a series-parallel state.
- the switching component when the switching component is in a third state, the first negative electrode is connected to the second positive electrode, the second negative electrode is connected to the third positive electrode, and the third negative electrode is connected to the second positive electrode.
- the fourth positive electrode is connected, and the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are connected in series with each other.
- the voltages of the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are nV respectively, the first working voltage is nV, and the second working voltage is 2nV, and the third operating voltage is 4nV.
- nV when nV is 18V, the first working voltage is 18V, the second working voltage is 36V, and the third working voltage is 72V.
- nV when nV is 20V, the first working voltage is 20V, the second working voltage is 40V, and the third working voltage is 80V.
- nV when nV is 24V, the first working voltage is 24V, the second working voltage is 48V, and the third working voltage is 96V.
- the battery pack further includes a circuit board and an output terminal, the circuit board is accommodated in the housing and is electrically connected to the output terminal, and the output terminal is used to connect the power tool to the electric power tool.
- an output terminal slot is provided on the battery interface, and the output terminal slot is used to accommodate the output terminal.
- the first battery pack is arranged horizontally, the second battery pack is arranged above the first battery pack, and the third battery pack is arranged above the second battery pack , the fourth battery pack is arranged above the third battery pack.
- the first battery pack, the second battery pack, the third battery pack and the fourth battery pack include 5 battery cells.
- the first battery pack, the second battery pack, the third battery pack and the fourth battery pack include 6 battery cells.
- the switching assembly in an initial state, is in a first state, the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are connected in parallel with each other, and the battery pack A first working voltage is output.
- the present invention also provides a power tool system, comprising:
- a first power tool having a first tool interface and capable of operating at a first operating voltage
- a second power tool having a second tool interface and capable of operating at a second operating voltage
- a third power tool having a third tool interface and capable of operating at a third operating voltage
- a multi-voltage battery pack, the multi-voltage battery pack includes:
- a battery pack housed in the housing, the battery pack comprising:
- the first battery pack includes a plurality of battery cells connected in series;
- the second battery pack includes a plurality of battery cells connected in series;
- the third battery pack includes a plurality of battery cells connected in series;
- the fourth battery pack includes a plurality of battery cells connected in series;
- a battery interface the output interface is provided on the housing to cooperate with (1) the first tool interface of the first power tool; (2) the second tool interface of the second power tool (3) the third tool interface of the third power tool cooperates;
- a switch assembly disposed in the casing and electrically connected with the battery pack, the switch assembly has a first state, a second state, and a third state;
- the switching assembly When the first power tool is matched with the multi-voltage battery pack, the switching assembly is in a first state, and the multi-voltage battery pack outputs a first working voltage to the first power tool;
- the switching assembly When the second power tool is matched with the multi-voltage battery pack, the switching assembly is in a second state, and the multi-voltage battery pack outputs a second working voltage to the second power tool;
- the switching assembly When the third power tool is matched with the multi-voltage battery pack, the switching assembly is in a third state, and the multi-voltage battery pack outputs a third working voltage to the third power tool;
- the third working voltage is greater than the second working voltage, and the second working voltage is greater than the first working voltage.
- the first tool interface has a first plug in a first configuration
- the second tool interface has a second plug in a second configuration
- the third tool interface has a first plug in a third configuration
- Three plugs, the first plug, the second plug, and the third plug have different configurations.
- At least two of the first plug, the second plug, and the third plug are provided with triggering devices, and the triggering devices are used for the switching components to cooperate, so that the switching components are in the transition between different states.
- the present invention also provides a charging system, comprising,
- the charger is provided with a charging interface
- Multi-voltage battery packs for use with power tools with different operating voltages including:
- a battery pack housed in the housing, the battery pack comprising:
- the first battery pack includes a plurality of battery cells connected in series;
- the second battery pack includes a plurality of battery cells connected in series;
- the third battery pack includes a plurality of battery cells connected in series;
- the fourth battery pack includes a plurality of battery cells connected in series;
- the battery interface is arranged on the housing for cooperating with the power tool
- a switch assembly disposed in the casing and electrically connected with the battery pack, the switch assembly has a first state, a second state, and a third state;
- the multi-voltage battery pack When the switching assembly is in the first state, the multi-voltage battery pack outputs a first working voltage
- the multi-voltage battery pack When the switching assembly is in the second state, the multi-voltage battery pack outputs a second working voltage
- the multi-voltage battery pack When the switching assembly is in a third state, the multi-voltage battery pack outputs a third working voltage
- the third working voltage is greater than the second working voltage, and the second working voltage is greater than the first working voltage
- the charging interface is matched with the battery interface
- the switch assembly is in a first state
- the first battery pack, the second battery pack, and the third battery pack The group and the fourth battery group are connected in parallel with each other, and the charger charges the multi-voltage battery pack with the first operating voltage.
- the multi-voltage battery pack of the present invention as described above, by adjusting the state of the switching components, the series-parallel state switching of each battery pack in the battery pack is realized, and then the change of the output voltage of the battery pack is realized, which improves the performance of the battery pack. suitability of the power tool system.
- FIG. 1 is a perspective view of the power tool system of the present invention.
- FIG. 2 is an exploded view of the power tool system shown in FIG. 1 .
- FIG. 3 is an exploded view of the switch assembly of FIG. 2 .
- FIG. 4 is a partially assembled perspective view of the power tool system shown in FIG. 1 .
- FIG. 5 is a schematic view of the structure of the inner insert seat in FIG. 3 .
- FIG. 6 is a schematic structural diagram of the inner socket shown in FIG. 5 from another perspective.
- FIG. 7 is a schematic view of the structure of the inner insert seat in FIG. 5 after the substrate is removed.
- FIG. 8 is a schematic structural diagram of the terminal assembly in FIG. 3 .
- FIG. 9 is a schematic view of the structure of the electrode insert holder in FIG. 3 .
- FIG. 10 is an isometric exploded view of the first outer socket in FIG. 3 .
- FIG. 11 is a schematic structural diagram of the terminal assembly being connected to the first connection assembly after the first external socket shown in FIG. 10 is inserted.
- FIG. 12 is a schematic diagram of the circuit connection state in the battery pack after the first external socket shown in FIG. 10 is inserted.
- FIG. 13 is a connection circuit diagram of the battery pack after the first external socket shown in FIG. 10 is inserted.
- Figure 14 is an exploded perspective view of the second outer blade socket.
- FIG. 15 is a schematic structural diagram of the connection between the terminal assembly and the second connection assembly after the second external socket shown in FIG. 14 is inserted.
- FIG. 16 is a schematic diagram of the circuit connection state in the battery pack after the second external socket shown in FIG. 14 is inserted.
- FIG. 17 is a connection circuit diagram of the battery pack after the second external socket shown in FIG. 14 is inserted.
- FIG. 18 is another embodiment of the second connection assembly of FIG. 7 .
- FIG. 19 is a schematic structural diagram of the terminal assembly being connected to the second connection assembly shown in FIG. 18 after the second external socket shown in FIG. 14 is inserted.
- FIG. 20 is a schematic diagram of a circuit connection state in the battery pack corresponding to FIG. 19 .
- FIG. 21 is a connection circuit diagram corresponding to the battery pack of FIG. 19 .
- Figure 22 is an exploded perspective view of the third outer blade socket.
- FIG. 23 is a schematic structural diagram of the terminal assembly being connected to the third connection assembly after the third external socket shown in FIG. 22 is inserted.
- FIG. 24 is a schematic diagram of the circuit connection state in the battery pack after the third external socket shown in FIG. 22 is inserted.
- FIG. 25 is a connection circuit diagram of the battery pack after the third external socket shown in FIG. 22 is inserted.
- Fig. 26 is a perspective view of the battery pack of the present invention.
- FIG. 27 is an exploded view of the battery pack shown in FIG. 26 .
- FIG. 28 is an exploded view of the housing of FIG. 26 .
- FIG. 29 is an enlarged view of the limit block and the chute in FIG. 28 .
- FIG. 30 is an exploded view of the terminal assembly of FIG. 27 .
- FIG. 31 is another perspective view of FIG. 30 .
- FIG. 32 is an exploded view of the switch assembly of FIG. 27 .
- FIG. 33 is an exploded view of the connection assembly of FIG. 32 .
- FIG. 34 is another perspective view of the slide assembly of FIG. 32 .
- FIG. 35 is an exploded view of the slide assembly of FIG. 32 .
- FIG. 36 is a schematic structural diagram of the sliding part in the first position after the first external insert seat is inserted.
- FIG. 37 is a schematic diagram of the structure when the connection terminal is connected to the first contact terminal after the first external socket is inserted.
- FIG. 38 is a connection circuit diagram of the battery pack after the first external socket is inserted.
- Fig. 39 is a schematic structural diagram of the sliding part in the second position after the second external insert seat is inserted.
- Figure 40 is a schematic diagram of the structure when the connection terminal is connected to the second contact terminal after the second external socket is inserted
- Figure 41 is a connection circuit diagram of the battery pack after the second external socket is inserted.
- FIG. 42 is a schematic structural diagram of the sliding part in the third position after the third external plug socket is inserted.
- FIG. 43 is a schematic structural diagram of the connection terminal being connected to the third contact terminal after the third external socket is inserted.
- Figure 44 is a connection circuit diagram of the battery pack after the third external socket is inserted.
- Figure 45 is a perspective view of the power tool system of the present invention.
- FIG. 46 is an exploded view of the power tool system shown in FIG. 45 .
- FIG. 47 is a combined side view of the switch assembly and terminal assembly of FIG. 46 .
- FIG. 48 is a schematic three-dimensional structure diagram of the first insert and the second insert in FIG. 47 .
- FIG. 49 is a schematic three-dimensional structural diagram of the first plug assembly in FIG. 45 .
- FIG. 50 is a schematic diagram of the combined structure of the switch assembly and the terminal assembly when the first plug assembly shown in FIG. 49 starts to be inserted.
- FIG. 51 is a schematic diagram of the circuit connection state in the battery pack after the first plug assembly shown in FIG. 49 is inserted.
- FIG. 52 is a connection circuit diagram of the battery pack after the first plug assembly shown in FIG. 49 is inserted.
- FIG. 53 is a schematic three-dimensional structure diagram of the second plug assembly.
- FIG. 54 is a schematic diagram of the combined structure of the switch assembly and the terminal assembly when the second plug assembly shown in FIG. 53 starts to be inserted.
- FIG. 55 is a schematic diagram of the circuit connection state in the battery pack after the second plug assembly shown in FIG. 53 is inserted.
- FIG. 56 is a connection circuit diagram of the battery pack after the second plug assembly shown in FIG. 53 is inserted.
- FIG. 57 is a schematic three-dimensional structural diagram of the third plug-in assembly.
- FIG. 58 is a schematic diagram of the combined structure of the switch assembly and the terminal assembly when the third plug assembly shown in FIG. 57 starts to be inserted.
- FIG. 59 is a schematic diagram of the circuit connection state in the battery pack after the third plug assembly shown in FIG. 57 is inserted.
- FIG. 60 is a connection circuit diagram of the battery pack after the third plug assembly shown in FIG. 57 is inserted.
- Figure 61 is a perspective view of the power tool system of the present invention.
- FIG. 62 is an exploded view of the power tool system shown in FIG. 61 .
- FIG. 63 is an exploded view of the housing assembly of FIG. 62 .
- FIG. 64 is a schematic three-dimensional structure diagram of the switch assembly in FIG. 62 .
- FIG. 65 is a partially exploded view of the switch assembly shown in FIG. 64.
- FIG. 65 is a partially exploded view of the switch assembly shown in FIG. 64.
- FIG. 66 is an exploded cross-sectional view of the switch assembly of FIG. 65.
- FIG. 66 is an exploded cross-sectional view of the switch assembly of FIG. 65.
- FIG. 67 is an exploded view of the single trigger of FIG. 65.
- FIG. 67 is an exploded view of the single trigger of FIG. 65.
- FIG. 68 is a schematic structural diagram of the storage box in FIG. 65 .
- FIG. 69 is a perspective view of the first external coupling of FIG. 62 .
- FIG. 70 is a schematic diagram of the structure of the switch assembly and the corresponding trigger assembly after the first external coupling member shown in FIG. 69 is inserted.
- FIG. 71 is a connection circuit diagram in the battery pack after the first external coupling shown in FIG. 69 is inserted.
- Figure 72 is a perspective view of the second external coupling.
- FIG. 73 is a connection circuit diagram in the battery pack after the second external coupling shown in FIG. 72 is inserted.
- 74 is a perspective view of a third external coupling.
- FIG. 75 is a connection circuit diagram in the battery pack after the third external coupling shown in FIG. 74 is inserted.
- 76 is a perspective view of a fourth external coupling.
- FIG. 77 is a connection circuit diagram in the battery pack after the fourth external coupling shown in FIG. 76 is inserted.
- Figure 78 is a perspective view of the power tool system of the present invention.
- FIG. 79 is an exploded view of the power tool system shown in FIG. 78 .
- FIG. 80 is an exploded view of the housing assembly of FIG. 79 .
- FIG. 81 is another perspective view of the upper housing of FIG. 80 .
- FIG. 82 is a partially exploded view of the switch assembly in FIG. 79 when it is connected to the conductive sheet.
- FIG. 83 is a perspective view of the fixing assembly of FIG. 82 .
- FIG. 84 is another perspective view of the securing assembly shown in FIG. 83 .
- FIG. 85 is a perspective view of the rotating assembly of FIG. 82 .
- FIG. 86 is another perspective view of the rotating assembly shown in FIG. 85 .
- FIG. 87 is a perspective view of the external coupling of FIG. 79 .
- FIG. 88 is a schematic circuit diagram when the external coupling shown in FIG. 87 is inserted and the rotating assembly is rotated to the first target area.
- FIG. 89 is a schematic circuit diagram of rotating the rotating assembly to the second target area after the external coupling shown in FIG. 87 is inserted.
- Fig. 90 is a circuit schematic diagram when the external coupling shown in Fig. 87 is inserted and the rotating assembly is rotated to the third target area.
- the present invention discloses a battery pack 100 , which includes a casing 110 , a battery pack 120 accommodated in the casing 110 , a circuit board 130 , and a switch assembly 140 electrically connected to the battery pack 120 . and terminal assembly 142.
- the switch assembly 140 is electrically connected to the battery pack 120 .
- the casing 110 is provided with a battery interface for cooperating with the power tool, and an output terminal slot is provided on the battery interface to accommodate the output terminal.
- the switching assembly 140 includes an electrode plug seat 141 and an inner plug seat 143 disposed opposite to the terminal assembly 142.
- the terminal assembly 142 is preferably a female terminal assembly, but should not be limited thereto.
- the battery pack 100 of the present invention is used on a power tool system that further includes an external socket 150 that can be inserted into the battery pack 100 to interface with the terminal assembly 142 of the battery pack 100 .
- the electrode socket 141 is provided with a receiving cavity 1411 , the terminal assembly 142 and the inner socket 143 are accommodated in the receiving cavity 1411 , and the terminal component 142 passes through the circuit board 130 . It is electrically connected to the electrodes of the battery pack 120 .
- the terminal assembly 142 includes a positive terminal 1421 and a negative terminal 1422, wherein the positive terminal 1421 includes a first positive terminal 1423 and a second positive terminal 1424, and the first positive terminal 1423 serves as a total positive output terminal and the external socket 150
- the second positive terminal 1424 is electrically connected to the positive terminal of the corresponding battery pack 120 respectively
- the negative terminal 1422 also includes a first negative terminal 1425 and a second negative terminal 1426, the first negative terminal 1425 is used as a total negative output terminal and external
- the sockets 150 are connected to each other, and the second negative terminals 1426 are respectively electrically connected to the negative electrodes of the corresponding battery packs 120 , so as to realize the output of the voltage in the battery pack 100 .
- the first positive terminal 1423 and the first negative terminal 1425 are disposed close to one end of the electrode socket 141 , and the second positive terminal 1424 and the second negative terminal 1426 are approximately located in the electrode socket.
- the second positive terminal 1424 and the second negative terminal 1426 are arranged left and right on a straight line.
- the battery pack 120 includes at least a first battery pack 121 , a second battery pack 122 , a third battery pack 123 and a fourth battery pack 124 ; correspondingly, the first positive terminal 1423 is connected to the positive electrode of the first battery pack 121 , and the first negative electrode
- the terminal 1425 is connected to the negative pole of the fourth battery pack 124; the second positive terminal 1424 and the second negative terminal 1426 are both provided with 4, and are arranged in the manner of ++++---- from right to left, so as to be respectively connected with Four battery packs are connected.
- each battery pack is provided with a plurality of cells, and the plurality of cells can be connected in series or in parallel with each other, which will not be described here.
- the rated output voltage u4 “n”V of the four-battery pack 124 .
- the rated output voltage of each battery pack is, for example, 18V.
- the switch element 140 has a first state, a second state and a third state.
- the switch element 140 When the switch element 140 is in the first state, the battery pack 100 outputs the first operating voltage, and when the switch element 140 is in the second state , the battery pack 100 outputs the second working voltage; when the switching component 140 is in the third state, the battery pack 100 outputs the third working voltage.
- the switch assembly 140 is slidably arranged.
- the switch assembly 140 When the switch assembly 140 is in the first position, the first battery pack 121 , the second battery pack 122 , the third battery pack 123 and the fourth battery pack 124 are connected in parallel with each other, and the battery pack 100 outputs the first working voltage; when the switch assembly 140 slides to the second position, the positive pole of the first battery pack 121 is connected to the positive pole of the second battery pack 122 , and the negative pole of the first battery pack 121 is connected to the negative pole of the second battery pack 122 After being connected, it is connected to the positive pole of the third battery pack 123 and the positive pole of the fourth battery pack 124, the negative pole of the third battery pack 123 is connected to the negative pole of the fourth battery pack 124, and the battery pack 100 outputs the second working voltage; when the switching component 140 When sliding to the third position, the first battery pack 121 , the second battery pack 122 , the third battery pack 123 and the fourth battery pack 124 are connected in series with each other, and the battery pack 100 outputs a third working voltage.
- the inner socket 143 is provided with a first connection element 144 , a second connection element 145 and a third connection element corresponding to the terminal elements 142 and arranged at intervals 146, the inner plug seat 143 is slidably arranged, and when it is in the first position, the terminal assembly 142 is electrically connected with the first connecting assembly 144, and when it is slid to the second position, the terminal assembly 142 is electrically connected with the second connecting assembly 145 For connection, when sliding to the third position, the terminal element 142 is electrically connected with the third connection element 146 .
- the first connecting component 144 , the second connecting component 145 and the third connecting component 146 are arranged at intervals along the sliding direction (up and down direction) of the inner socket 143 .
- the terminal component 142 When the terminal component 142 is connected to the first
- the first battery pack 121 , the second battery pack 122 , the third battery pack 123 and the fourth battery pack 124 are connected in parallel with each other, and the first operating voltage output by the battery pack 100 is “n” V;
- the terminal assembly 142 and the second connection assembly 145 are electrically connected, the first battery pack 121 , the second battery pack 122 , the third battery pack 123 and the fourth battery pack 124 are connected in series and parallel (ie, series-parallel connection or parallel-parallel connection).
- the second operating voltage output by the battery pack 100 is “2n” V; when the terminal assembly 142 is electrically connected with the third connection assembly 146, the first battery pack 121, the second battery pack 122, the third The battery pack 123 and the fourth battery pack 124 are connected in series with each other. At this time, the third operating voltage output by the battery pack 100 is “4n”V.
- the first connection component 144 includes a first positive connection piece 1441 and a first negative connection piece 1442 , and the first positive connection piece 1441 has four positive pins, which are respectively connected with the first battery pack 121 , The positive poles of the second battery pack 122 , the third battery pack 123 and the fourth battery pack 124 are connected to each other; the first negative pole connecting piece 1442 has four negative pole pins, which are The negative poles of the battery pack 123 and the fourth battery pack 124 are connected.
- the first battery pack 121 , the second battery pack 122 , the third battery pack 123 and the fourth battery pack 124 are connected in parallel with each other, and the first operating voltage “n” V is equal to the rated output voltage of each battery pack. .
- the second connection assembly 145 includes a second positive electrode connecting piece 1451 connecting the first positive electrode of the first battery pack 121 and the second positive electrode of the second battery pack 122 , and the third battery pack is respectively connected to the second positive electrode connecting piece 1451
- the third positive pole of 123, the fourth positive pole of the fourth battery pack 124, the first negative pole of the first battery pack 121 and the second negative pole of the second battery pack 122 are connected with the fourth connecting piece 1452, and the third battery pack 123
- the third negative electrode is connected to the second negative electrode connecting piece 1453 of the fourth negative electrode of the fourth battery pack 124 .
- the first battery pack 121 and the second battery pack 122 can be connected in parallel
- the third battery pack 123 and the fourth battery pack 124 can be connected in parallel, and then connected in series (ie, parallel-series connection).
- the voltage "2n"V is equal to the sum of the rated output voltages of the two battery packs.
- the third connecting assembly 146 includes a first connecting piece 1461 connecting the second positive electrode of the second battery pack 122 to the first negative electrode of the first battery pack 121 , and connecting the second positive electrode of the third battery pack 123
- the second connecting piece 1462 connecting the third positive pole to the second negative pole of the second battery pack 122 and the third connecting piece 1463 connecting the fourth positive pole of the fourth battery pack 124 to the third negative pole of the third battery pack 123, This is to realize the series connection of the first battery pack 121, the second battery pack 122, the third battery pack 123 and the fourth battery pack 124.
- the third operating voltage "4n"V is equal to the sum of the rated output voltages of the four battery packs. and.
- the inner plug seat 143 includes a base body 1431 and a spring structure 1432 abutting against the base body 1431 .
- the first connecting component 144 , the second connecting component 145 and the third connecting component 146 are integrally formed with the base body 1431 .
- the base body 1431 is provided with ribs 1433 and sliding grooves 1434 located on both sides of the ribs 1433.
- the first connection component 144, the second connection component 145 and the third connection component 146 are formed and exposed on the rib 1433.
- the second positive terminal 1424 and the second The two contact pieces 1427 of each terminal of the negative terminal 1426 are accommodated in the chute 1434 and clamp the rib 1433, so that when the inner socket 143 slides, the second positive terminal 1424 and the second negative terminal 1426 can always be kept in contact with each other.
- the chute 1434 slides in and maintains the state of being clamped and abutted with the rib 1433 .
- the base body 1431 is provided with a receiving portion 1435 extending outward, a positioning post 1412 is provided on the inner side wall of the electrode insert seat 141 , and one end of the spring structure 1432 is sleeved on the positioning post 1412 The outer periphery and the other end abut against the inner wall of the accommodating portion 1435 .
- the spring structure 1432 is compressed or released, so that the terminal assembly 142 is switchably connected among the first connecting assembly 144 , the second connecting assembly 145 and the third connecting assembly 146 .
- the base body 1431 is further provided with a slide rail 1436 protruding toward one side of the electrode insert seat 141 , a through groove 1413 is correspondingly formed on the electrode insert seat 141 , and the slide rail 1436 is accommodated in the through groove 1413 , so as to guide the inner plug seat 143 to slide along the through groove 1413 in the electrode plug seat 141 .
- the number and arrangement positions of the slide rails 1436 and the through grooves 1413 can be determined according to the actual situation, which is not limited here.
- a pushing portion 1437 is formed protruding outward from a side of the base body 1431 away from the receiving portion 1435 , and the sliding rail 1436 is disposed on the pushing portion 1437 .
- the pushing portion 1437 can be used to push the inner insert seat 143 to slide.
- the third connecting element 146 is closer to the pushing portion 1437 than the second connecting element 145 , and the first connecting element 144 is farther away from the pushing portion 1437 than the second connecting element 145 .
- the switch assembly 140 further includes a push rod for further pushing the inner insert seat 143 to slide, the third connection assembly 146 is closer to the push rod than the second connection assembly 145 , and the first connection assembly 144 It is farther away from the push rod than the second connecting assembly 145 .
- the push rod can be configured to be integrally formed with the base body 1431, or can be configured to be integrally formed with the outer socket 150, so that when the outer socket 150 is inserted, the push rod can be used to force the inner socket 143 to slide, thereby making the terminal
- the component 142 is electrically connected to the first connection component 144 or the second connection component 145 or the third connection component 146 .
- the external plug base 150 can be set as three separate external plug bases according to the length of the push rod.
- the push rods of different lengths can also be set on an external socket, and different configurations can be realized by switching the push rods of different lengths.
- the power tool system includes a first power tool, a second power tool and a third power tool.
- the first power tool is provided with a first tool interface and can run under the first working voltage;
- the second power tool is provided with a
- the second tool interface can run under the second working voltage;
- the third power tool is provided with a third tool interface and can run under the third working voltage.
- the first tool interface includes a first plug, such as the first external plug socket 151
- the second tool interface includes a second plug, such as the second external plug socket 152
- the third tool interface includes a third plug, such as the third external socket 153 .
- triggering devices are provided on the first external socket 151 , the second external socket 152 and the third external socket 153 , and the triggering devices are used for the cooperation of the switching components, so that the switching components are in different states. convert. The principle of use of the power tool system of the present invention will be described in detail below using these three separate external sockets.
- the external socket 150 includes a first external socket 151 , a second external socket 152 and a third external socket 153 , and the first external socket 150
- the length of the push rod on the film holder 151 is smaller than the length of the push rod 147 on the second external plug base 152
- the length of the push rod 147 on the second external plug base 152 is smaller than the length of the push rod 147' on the third external plug base 153. length.
- the first external socket 151 includes a body portion 1511 and a male terminal 1512 inserted on the body portion 1511 , and the length of the push rod on the body portion 1511 is zero.
- the male terminal 1512 includes a positive male terminal 1513 and a negative male terminal 1514, the positive male terminal 1513 is used for docking with the first positive terminal 1423, and the negative male terminal 1514 is used for docking with the first negative terminal 1425, so as to realize the battery pack terminal assembly
- the electrical connection between 142 and the male terminal 1512 of the first external socket 151 realizes the transmission of current and voltage.
- the positive male terminal 1513 is butted with the first positive terminal 1423
- the negative male terminal 1514 is butted with the first negative terminal 1425
- the inner plug The seat 143 is in the first position (that is, at the bottom position of the electrode insert seat 141 ).
- the terminal assembly 142 is electrically connected to the first connection assembly 144 , the first battery pack 121 , the second battery pack 122 , and the third battery
- the group 123 and the fourth battery group 124 are connected in parallel with each other.
- the second external socket 152 includes a main body portion 1521 and a male terminal 1522 inserted on the main body portion 1521 .
- the male terminal 1522 includes a positive male terminal 1523 and a negative male terminal 1524 .
- the positive male terminal 1523 is used for docking with the first positive terminal 1423
- the negative male terminal 1524 is used for docking with the first negative terminal 1425, so as to realize the electrical connection between the battery pack terminal assembly 142 and the male terminal 1522 of the second external socket 152.
- Sexual conduction to realize the transmission of current and voltage.
- the difference from the first external insert seat 151 shown in FIG. 10 is that a push rod 147 is provided on the body portion 1521 of the second external insert seat 152 .
- FIG. 15 to FIG. 17 when the second outer insert seat 152 is inserted, the push rod 147 will push the push portion 1437 on the inner insert seat 143, forcing the inner insert seat 143 to slide upward, and the spring structure 1432 is compressed until the positive male terminal 1523 is butted with the first positive terminal 1423, and the negative male terminal 1524 is butted with the first negative terminal 1425.
- the inner socket 143 slides to the second position (ie, the middle of the electrode socket 141). position), the terminal assembly 142 and the second connection assembly 145 are electrically connected, so that the first battery pack 121 and the second battery pack 122 are connected in parallel, the third battery pack 123 and the fourth battery pack 124 are connected in parallel, and then connected in series with each other.
- the second connection assembly 145 ′ includes a second positive electrode connecting piece 1451 ′ connecting the first positive electrode of the first battery pack 121 to the second positive electrode of the second battery pack 122 , and connecting the first positive electrode of the third battery pack 123
- the fifth connecting piece 1452 ′ connecting the third positive pole to the negative second pole of the second battery pack 122
- the sixth connecting piece 1453 connecting the fourth positive pole of the fourth battery pack 124 to the first negative pole of the first battery pack 121 '
- a second negative electrode connecting piece 1454 ′ connecting the third negative electrode of the third battery pack 123 and the fourth negative electrode of the fourth battery pack 124 .
- the push rod 147 will push the pushing portion 1437 on the inner blade holder 143 to force the inner blade holder 143
- the spring structure 1432 is compressed until the positive male terminal 1523 is butted with the first positive terminal 1423, and the negative male terminal 1524 is butted with the first negative terminal 1425.
- the terminal assembly 142 is electrically connected to the second connection assembly 145 ′, so that the first battery pack 121 and the fourth battery pack 124 are connected in series, and the second battery pack 122 and the third battery pack 123 are connected in series , and then connect in parallel.
- the third external socket 153 includes a main body portion 1531 and a male terminal 1532 inserted on the main body portion 1531 .
- the male terminal 1532 includes a positive male terminal 1533 and a negative male terminal 1534 .
- the positive male terminal 1533 is used for docking with the first positive terminal 1423
- the negative male terminal 1534 is used for docking with the first negative terminal 1425, so as to realize the electrical connection between the battery pack terminal assembly 142 and the male terminal 1532 of the third external socket 153.
- Sexual conduction to realize the transmission of current and voltage.
- the difference from the second external insert holder 152 shown in FIG. 14 is that the body portion 1531 of the third external insert holder 153 is also provided with a push rod 147 ′, and the length of the push rod 147 ′ is greater than that of the push rod 147 .
- the push rod 147 ′ will push the pushing portion 1437 on the inner blade holder 143 to force the inner blade holder 143 upward Sliding, the spring structure 1432 is compressed until the positive male terminal 1533 and the first positive terminal 1423 are butted, and the negative male terminal 1534 is butted with the first negative terminal 1425. (at the topmost position of the seat 141), the terminal assembly 142 and the third connection assembly 146 are electrically connected to realize the series connection of the first battery pack 121, the second battery pack 122, the third battery pack 123 and the fourth battery pack 124 .
- the battery pack 100 of the present invention can also be applied to a charging system (not shown), which includes the aforementioned battery pack 100 and a charger for charging the battery pack 100 .
- the charger is provided with a charging interface.
- the charging interface cooperates with the battery interface.
- the internal socket 143 is in the first position.
- the first battery pack 121 and the second The battery pack 122 , the third battery pack 123 and the fourth battery pack 124 are connected in parallel with each other, and the charging voltage output by the charger is equal to the rated output voltage of a single battery pack, which is a low voltage, which protects the battery pack from the impact of high current and high voltage .
- the first connection components 144 , the second connection components 145 , 145 ′ and the third connection components 146 are provided at different positions of the inner plug socket 143 , thereby When the inner socket 143 slides to the first position or the second position or the third position, the selectivity between the terminal assembly 142 and the first connecting assembly 144 or the second connecting assembly 145 , 145 ′ or the third connecting assembly 146 can be utilized
- the connection can realize the series-parallel state switching of the battery packs in the battery pack 100, and then realize the change of the output voltage of the battery pack, which improves the adaptability of the power tool system with the battery pack.
- the present invention discloses a battery pack 200 , which includes a casing 210 , a battery pack 220 accommodated in the casing 210 , a circuit board 230 , and a switch assembly 240 electrically connected to the battery pack 220 . and terminal assembly 250.
- the battery pack 220 includes several battery packs, and the terminal assembly 250 is electrically connected to the battery packs.
- the terminal assembly 250 is preferably a female terminal assembly, but should not be limited thereto.
- the battery pack 200 of the present invention is used in a power tool system, which further includes an external socket (not shown) that can be inserted into the battery pack 200 to interface with the switch assembly 240 of the battery pack 200 .
- the battery pack 220 at least includes a first battery pack 221 , a second battery pack 222 , a third battery pack 223 and a fourth battery pack 224 ; each battery pack is provided with a plurality of cells , the plurality of cells can be connected in series with each other, and can also be connected in parallel with each other, which will not be described too much here.
- the rated output voltage u4 “n”V of the four-battery pack 224 .
- a battery interface is provided on the casing 210 to cooperate with the power tool, and an output terminal slot is provided on the battery interface to accommodate the output terminal.
- the casing 210 includes an upper casing 211 and a lower casing 212 assembled with each other, a receiving space 213 formed between the upper casing 211 and the lower casing 212 , a battery pack 220 , a circuit board 230 , a switching assembly 240 and The terminal assemblies 250 are all accommodated in the accommodating space 213 .
- the top wall of the upper casing 211 is provided with a chute 2111 and limit blocks 2112 located on both sides of the chute 2111.
- the chute 2111 is arranged in a rectangular shape, and two limit blocks 2112 are respectively provided on both sides of the chute 2111.
- the two limiting blocks 2112 are spaced apart from each other to form a limiting space 2113 between the two limiting blocks 2112 .
- the limit blocks 2112 located on both sides of the chute 2111 are defined as the first limit block 21121 , the second limit block 21122 , the third limit block 21123 and the fourth limit block 21124 .
- the first limit block 21121 and the second limit block 21122 are adjacent and symmetrically disposed
- the third limit block 21123 and the fourth limit block 21124 are adjacent and symmetrically disposed
- the block 21123 is symmetrically arranged relative to the chute 2111
- the second limiting block 21122 and the fourth limiting block 21124 are symmetrically arranged relative to the sliding slot 2111 .
- the limiting space 2113 is formed between the first limiting block 21121 and the second limiting block 21122 and between the third limiting block 21123 and the fourth limiting block 21124 .
- each limiting block 2112 is arranged in the shape of an elastic sheet, so as to be elastically deformed and elastically reset under certain circumstances; each limiting block 2112 faces the chute
- a circular arc-shaped outer wall surface 2114 is formed on one side of the 2111 , and the circular arc-shaped outer wall surface 2114 can play a guiding role in certain situations; but it should not be limited thereto.
- the upper casing 211 is also provided with jacks 2115 for inserting external sockets.
- jacks 2115 There are two jacks 2115 corresponding to the positive output and the negative output of the battery pack 200 respectively.
- the terminal assembly 250 is electrically connected to the electrodes of the four battery packs through the circuit board 230 .
- the terminal assembly 250 includes a fixed base 251 and a fixed terminal 252 inserted and fixed in the fixed base 251.
- the fixed terminal 252 includes a first fixed terminal 2521 and a second fixed terminal 2522 which are arranged in a straight line and left and right.
- the first fixed terminal 2521 is a positive terminal, which is used for electrical connection with the positive pole of the corresponding battery pack;
- the second fixed terminal 2522 is a negative terminal, which is used for electrical connection with the negative pole of the corresponding battery pack.
- there are four first fixed terminals 2521 and four second fixed terminals 2522 are arranged in a ++++---- manner from left to right to be connected to four battery packs respectively.
- the fixing base 251 is provided with a receiving groove 2511 for receiving the fixed terminal 252 .
- Each fixed terminal 252 has a first insertion portion 2523 and a second insertion portion 2524 and a connection
- the connecting portion 2525 of the first inserting portion 2523 and the second inserting portion 2524 is assembled and fixed in the receiving groove 2511 .
- the first inserting portion 2523 and the second inserting portion 2524 are perpendicular to each other, and the first inserting portion 2523 protrudes beyond the front end of the fixing seat 251 from the receiving slot 2511 in the horizontal direction, so as to be electrically connected with the switching component 240;
- the second plug portion 2524 protrudes from the receiving slot 2511 and protrudes beyond the bottom of the fixing base 251 in the vertical direction, so that the second plug portion 2524 is plugged, fixed and electrically connected to the circuit board 230 in the vertical direction, thereby realizing the first
- the two plug-in parts 2524 are electrically connected to the positive and negative electrodes of the four battery packs.
- the switching component 240 has a first state, a second state, and a third state.
- the switching component 240 When the switching component 240 is in the first state, the battery pack 200 outputs the first working voltage, and when the switching component 240 is in the first state, the battery pack 200 outputs the first working voltage.
- the switching component 240 When 240 is in the second state, the battery pack 200 outputs the second working voltage, and when the switching component 240 is in the third state, the battery pack 200 outputs the third working voltage.
- the switching component 240 includes a connecting component 241 that is electrically connected to the battery pack 220 and a sliding component 242 that is electrically connected to the connecting component 241.
- the sliding component 242 is slidably disposed relative to the connecting component 241, and when the sliding component 242 When in the first position, the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 are connected in parallel with each other, and the battery pack 200 outputs the first operating voltage; when the sliding component 242 slides to the second position When the first battery pack 221, the second battery pack 222, the third battery pack 223 and the fourth battery pack 224 are combined in series and parallel, the battery pack 200 outputs the second working voltage; when the sliding component 242 slides to the third position , the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 are connected in series with each other, and the battery pack 200 outputs a third operating voltage.
- the third working voltage is greater than the second working voltage
- the second working voltage is greater than the first working voltage.
- connection assembly 241 is electrically connected to the terminal assembly 250 , and includes a connection body 2410 and a connection terminal 2411 formed on the connection body 2410 .
- the connection body 2410 is recessed with a receiving cavity 24101 , one end of the connection terminal 2411 is accommodated and exposed to the accommodating cavity 24101 , and the other end is located outside the connection body 2410 .
- the sliding component 242 is accommodated in the accommodating cavity 24101 and is electrically connected with the connecting terminal 2411 in the accommodating cavity 24101 .
- the connection terminals 2411 include a first positive terminal 2412 and a first negative terminal 2413.
- first positive terminals 2412 are provided to connect with the first battery pack 221, the second battery pack 222, the third battery pack 223 and the fourth battery respectively.
- the positive poles of the group 224 are electrically connected, and four first negative terminals 2413 are also provided to be electrically connected to the negative poles of the first battery group 221 , the second battery group 222 , the third battery group 223 and the fourth battery group 224 respectively. .
- the connecting terminal 2411 is detachably assembled and fixed on the connecting body 2410 . Because the connecting terminal 2411 is prone to wear after sliding and rubbing for many times, the stability of the electrical connection between the connecting terminal 2411 and the sliding component 242 is poor, so the connecting terminal 2411 is designed to be detachable, which can occur in the connecting terminal 2411.
- the connection terminal 2411 can be directly replaced after being worn, and the entire connection assembly 241 need not be replaced, which reduces the cost.
- connection assembly 241 is not directly connected to the four battery packs, but the connection assembly 241 and the four battery packs are realized through the current transfer of the terminal assembly 250 . Indirect connection of battery pack. Specifically, the first positive terminal 2412 of the connection assembly 241 and the first fixed terminal 2521 of the terminal assembly 250 in FIG.
- the first positive terminal 2412 and the first negative terminal 2413 are provided in the shape of connecting sheets, so as to be assembled and fixed with the connecting body 2410 and one end is exposed in the receiving cavity 24101.
- the other ends of a positive terminal 2412 and the other end of the first negative terminal 2413 are also easily inserted into the first inserting parts 2523 of the first fixed terminal 2521 and the second fixed terminal 2522 to realize the electrical connection between the connecting terminal 2411 and the fixed terminal 252 ; of course, this should not be the limit.
- the first positive terminal 2412 and the first negative terminal 2413 each include a contact portion 2416, a mounting portion 2417 extending backward from the contact portion 2416, and a butt portion 2418 extending backward from the mounting portion 2417.
- the thickness of the contact portion 2416 is greater than that of the mounting portion.
- connection body 2410 and the connection terminal 2411 so that after the connection body 2410 and the connection terminal 2411 are assembled, the contact portion 2416 of the first positive terminal 2412 and the first negative terminal 2413 protrudes and is accommodated in the opening 24102, so that the sliding component 242 is directly connected to the opening 24102 Contacts 2416 inside make electrical connections.
- the mounting portion 2417 is assembled and fixed in the connection body 2410 , and the docking portion 2418 is used for docking with the first fixed terminal 2521 of the terminal assembly 250 and the first plug portion 2523 of the second fixed terminal 2522 to realize the terminal assembly 250 and the switching assembly 240 . electrical connection.
- connection terminal 2411 further includes a second positive terminal 2414 and a second negative terminal 2415 located outside the connection body 2410 .
- a positive terminal 2412 is formed on the first negative terminal 2413 corresponding to the negative terminal of the fourth battery pack 224 to serve as a total negative
- the output terminal is connected with the external socket, so as to realize the output of the voltage in the battery pack 200 .
- Both the second positive terminal 2414 and the second negative terminal 2415 are disposed near the insertion hole 2115 so as to be docked with the external socket.
- the sliding assembly 242 includes a sliding body 2421 and a third contact terminal 243 , a second contact terminal 244 and a first contact terminal 245 , which are formed on the sliding body 2421 and are spaced apart from each other.
- the third contact terminal 243 , the second contact terminal 244 and the first contact terminal 245 are used for electrical connection with the contact portion 2416 of the connection terminal 2411 , and when the sliding component 242 is in the first position, the contact portion 2416 of the connection terminal 2411 only contacts the first The terminals 245 are electrically connected.
- the contact portion 2416 of the connecting terminal 2411 is only electrically connected to the second contact terminal 244.
- the contact portion 2416 of the connecting terminal 2411 is electrically connected.
- the contact portion 2416 is only electrically connected to the third contact terminal 243 .
- the first contact terminal 245 , the second contact terminal 244 and the third contact terminal 243 are arranged at intervals along the sliding direction (up and down direction) of the sliding component 242 .
- the contact portion of the connection terminal 2411 is When 2416 is electrically connected to the first contact terminal 245, the first battery pack 221, the second battery pack 222, the third battery pack 223 and the fourth battery pack 224 are connected in parallel with each other, and the first working voltage output by the battery pack 200 is "n" V;
- the contact portion 2416 of the connection terminal 2411 is electrically connected to the third contact terminal 243, the first battery pack 221, the second battery pack 222, the third battery pack 223 and the fourth battery pack 224 are connected in series with each other, At this time, the third operating voltage output by the battery pack 200 is “4n” V; when the contact portion 2416 of the connection terminal 2411 is electrically connected to the second contact terminal 244 , the first battery pack 221 , the second battery pack 222
- the first contact terminal 245 includes a second positive electrode connection piece 2451 and a second negative electrode connection piece 2452 , and the second positive electrode connection piece 2451 is connected to the first battery pack 221 and the second battery pack respectively.
- the positive poles of the third battery pack 223 and the fourth battery pack 224 are connected, and the second negative pole connecting piece 2452 is respectively connected to the negative poles of the first battery pack 221, the second battery pack 222, the third battery pack 223 and the fourth battery pack 224 connected.
- the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 are connected in parallel with each other.
- the first operating voltage "n"V is equal to the rated output voltage of each battery pack. .
- the second contact terminal 244 includes a first positive electrode connecting piece 2441 connecting the first positive electrode of the first battery pack 221 and the second positive electrode of the second battery pack 222 , respectively,
- the third positive electrode of the three battery packs 223, the fourth positive electrode of the fourth battery pack 224, the first negative electrode of the first battery pack 221 and the second negative electrode of the second battery pack 222 are connected with the fourth connecting piece 2442, and the third The third negative electrode of the battery pack 223 is connected to the fourth negative electrode of the fourth battery pack 224 through the first negative electrode connecting piece 2443 .
- the first battery pack 221 and the second battery pack 222 can be connected in parallel, the third battery pack 223 and the fourth battery pack 224 can be connected in parallel, and then connected in series (ie, parallel-series connection).
- the voltage "2n"V is equal to the sum of the rated output voltages of the two battery packs.
- the third contact terminal 243 includes a first connecting piece 2431 connecting the second positive electrode of the second battery pack 222 and the first negative electrode of the first battery pack 221 ,
- the second connector 2432 connects the third positive pole of the third battery pack 223 to the second negative pole of the second battery pack 222 and the fourth positive pole of the fourth battery pack 224 and the third negative pole of the third battery pack 223
- the third connector 2433 is used to realize the series connection of the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 .
- the third operating voltage “4n” V is equal to four Sum of rated output voltages of battery packs.
- the sliding body 2421 includes a first body 2422 , a second body 2423 and a third body 2424 which are parallel to each other and spaced apart and connect the first body 2422 , the second body 2423 and the third body 2423 in the width direction thereof.
- the connection posts 2425 of the third body 2424, the third contact terminals 243 are formed and exposed to the first body 2422, the second contact terminals 244 are formed and exposed to the second body 2423, the first contact terminals 245 are formed and exposed to the third body 2424 .
- the sliding body 2421 further includes a sliding rod 2426 arranged perpendicular to the second body 2423 and a sliding portion 2427 located at the end of the sliding rod 2426 .
- the sliding rod 2426 protrudes beyond the upper casing 211 .
- the outer surface is limited and accommodated in the chute 2111, so that the sliding part 2427 is exposed outside the upper casing 211.
- the sliding part 2427 is used to push the sliding body 2421 to slide along the switch between third positions.
- One end of the elastic member 246 is fixed to the first body 2422, and the other end is in contact with the inner wall surface of the receiving cavity 24101 of the connecting body 2410 and is fixed (ie abutting with each other), so that when the sliding component 242 slides, the elastic member 246 is elastically compressed or released , so that the contact portion 2416 of the connection terminal 2411 is switchably connected among the third contact terminal 243 , the second contact terminal 244 and the first contact terminal 245 .
- the four limiting blocks 2112 on the upper casing 211 are used to limit and fix the sliding portion 2427 at the first position or the second position or the third position .
- the sliding portion 2427 includes a base portion 24271 that slides along the chute 2111 and a limiting portion 24272 that protrudes outwards from both sides of the base portion 24271, so that the sliding portion 2427 is roughly cross-shaped; when the sliding portion 2427 is in the first position When the sliding portion 2427 is at the second position, the limiting portion 24272 is accommodated in the limiting space 2113; when the sliding portion 2427 is located at the third position, the outer wall surface of the limiting portion 24272 abuts against the outer wall surfaces 2114 of the second limiting block 21122 and the fourth limiting block 21124; Fixing at the corresponding location.
- the power tool system includes a first power tool (not shown), a second power tool (not shown) and a third power tool (not shown), and the first power tool is provided with a first tool interface, And the first tool interface has a first plug of a first configuration and can operate at a first working voltage; the second power tool is provided with a second tool interface, and the second tool interface has a second plug of a second configuration. capable of operating at the second operating voltage; the third power tool is provided with a third tool interface, and the third tool interface has a third plug in a third configuration capable of operating at the third operating voltage; and a trigger is provided on each plug
- the device is used for the switching components to cooperate to make the switching components transition between different states.
- the first plug is, for example, a first external socket
- the second plug is, for example, a second socket
- the third plug is, for example, a third socket.
- the following three types of external sockets will be used.
- the voltage switching principle of the battery pack of the present invention will be described in detail. Definition Each battery pack includes 5 cells connected in series, and the voltage of each battery pack is 20V.
- the sliding assembly 242 slides upward to the first position, and at this time the two elastic members 246 is compressed, the base 24271 of the sliding portion 2427 is located at the top of the chute 2111, and the lower sides of the two limiting portions 24272 are in contact with the outer wall surfaces 2114 of the corresponding first limiting block 21121 and the third limiting block 21123 respectively.
- the contact portion 2416 of the connection terminal 2411 is electrically connected to the first contact terminal 245 , so as to realize the parallel connection of the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 .
- the output of different voltages of the battery pack 200 can be realized, so as to meet the voltage requirements of three different electric tools, and the switching between the three voltages is fast and convenient.
- the sliding assembly 242 slides upward to the second position, and at this time the two elastic members 246 is compressed, the base portion 24271 of the sliding portion 2427 is located at the middle position of the chute 2111, the two limiting portions 24272 are both limited and accommodated in the limiting space 2113, and the contact portion 2416 of the connection terminal 2411 is electrically connected to the second contact terminal 244.
- the first battery pack 221 and the second battery pack 222 are connected in parallel
- the third battery pack 223 and the fourth battery pack 224 are connected in parallel, and then connected in series with each other (ie, parallel-series connection).
- the sliding assembly 242 is in the third position, and the two elastic members 246 are in the initial state, and the sliding part 242 is in the initial state.
- the base portion 24271 of the 2427 is located at the bottom end of the chute 2111, and the upper sides of the two limiting portions 24272 are respectively in contact with the outer wall surfaces 2114 of the corresponding second limiting block 21122 and the fourth limiting block 21124.
- the contact portion 2416 is electrically connected to the third contact terminal 243 , and the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 are connected in series with each other.
- the sliding of the sliding part 2427 is manually adjusted.
- the sliding part 2427 is directly pushed and pulled toward the first position, the second position or the third position,
- the elastic member 246 is compressed or released, and the corresponding limiting block 2112 is elastically deformed, which facilitates the movement of the sliding portion 2427 .
- the limiting block 2112 is automatically reset, and further plays a role of limiting the sliding portion 2427 .
- the sliding of the sliding part 2427 can also be designed as a non-manual push-pull.
- the external plug-in base pushes the sliding portion 2427 to slide synchronously", which will not be described in detail here.
- the battery pack 200 of the present invention can also be applied to a charging system (not shown), which includes the aforementioned battery pack 200 and a charger for charging the battery pack 200 .
- the charger is provided with a charging interface to cooperate with the battery interface of the battery pack 200 .
- the sliding component 242 slides to the first position.
- the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 are connected in parallel with each other.
- the charging voltage output by the charger is equal to the rated output voltage of a single battery pack, which is a low voltage.
- the sliding assembly 242 can also be located at the third position.
- the first battery pack 221 , the second battery pack 222 , the third battery pack 223 and the fourth battery pack 224 are connected in series with each other, and the charging output by the charger The voltage is equal to the sum of the rated output voltages of the four battery packs.
- the first contact terminal 245 , the second contact terminal 244 and the third contact terminal 243 are provided at different positions of the sliding body 2421 , so that when the sliding component 242 is in the When sliding switching between the first position, the second position and the third position, the selective electrical connection between the connection terminal 2411 and the first contact terminal 245 or the second contact terminal 244 or the third contact terminal 243 can be used to realize the battery
- the series and parallel states of the battery packs in the pack 200 are switched, thereby realizing the change of the output voltage of the battery pack 200 , and improving the adaptability of the power tool system having the battery pack 200 .
- the present invention discloses a battery pack 300 , which includes a casing 310 , a battery pack 320 accommodated in the casing 310 , a circuit board 330 , and a terminal assembly 350 electrically connected to the battery pack 320 . and the switching element 340 electrically connected with the terminal element 350 .
- the casing 110 is provided with a battery interface for cooperating with the power tool, and an output terminal slot is provided on the battery interface to accommodate the output terminal.
- the battery pack 320 includes several battery packs, and the terminal assembly 350 is electrically connected to the battery packs through the circuit board 330 .
- the battery pack 300 of the present invention is used in a power tool system, and the power tool system further includes a plug assembly 360 that can be inserted into the battery pack 300 to be docked with the switch assembly 340 of the battery pack 300 .
- the battery pack 320 at least includes a first battery pack, a second battery pack, a third battery pack and a fourth battery pack, and each battery pack is provided with a plurality of cells , the plurality of cells can be connected in series with each other, and can also be connected in parallel with each other, which will not be described too much here.
- each battery pack includes, for example, 6 battery cells.
- the rated output voltage u4 n"V.
- the terminal assembly 350 includes a positive terminal 351 and a negative terminal 352 symmetrically arranged with each other.
- a second positive terminal 3512 connected to the second positive pole of the second battery pack, a third positive terminal 3513 connected to the third positive pole of the third battery pack, and a fourth positive terminal 3514 connected to the fourth positive pole of the fourth battery pack
- the negative terminal 352 includes a first negative terminal 3521 connected to the first negative pole of the first battery pack, a second negative terminal 3522 connected to the second negative pole of the second battery pack, and a second negative terminal 3522 connected to the third negative pole of the third battery pack
- the third negative terminal 3523 and the fourth negative terminal 3524 connected to the fourth negative electrode of the fourth battery pack.
- the first positive terminal 3511 and the third negative terminal 3523 are symmetrical to each other
- the second positive terminal 3512 and the first negative terminal 3521 are symmetrical to each other
- the third positive terminal 3513 is symmetrical to each other.
- the fourth negative terminal 3524 is symmetrical to each other
- the fourth positive terminal 3514 and the second negative terminal 3522 are symmetrical to each other.
- the arrangement of the positive terminal 351 and the negative terminal 352 can also be designed in other ways to achieve the same technical effect as this embodiment, which is not limited here.
- the switch assembly 340 has a first state, a second state, and a third state.
- the switch assembly 340 When the switch assembly 340 is in the first state, the battery pack 300 outputs the first operating voltage, and when the switch assembly 340 is in the first state In the second state, the battery pack 300 outputs the second working voltage, and when the switching component 340 is in the third state, the battery pack 300 outputs the third working voltage.
- the switch assembly 340 includes a first part 341 and a second part 342 that are symmetrically arranged on the left and right, and the first part 341 and the second part 342 can move relative to each other, so that the switch assembly 340 is in the first position (ie, in the initial state)
- the battery pack 300 outputs the first working voltage;
- the first part 341 and the second part 342 move relative to each other by the first distance, switching
- the component 340 is located at the second position, the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are combined in series and parallel (ie, including series-parallel connection or parallel-serial connection), the battery pack 300 outputs the first battery pack 300.
- the battery pack 300 outputs a third working voltage.
- the second distance is greater than the first distance.
- the first working voltage is smaller than the second working voltage, and the second working voltage is smaller than the third working voltage.
- the first part 341 and the second part 342 may or may not be deformed, as long as the first part 341 and the second part 342 can be deformed.
- the output of the working voltage, the second working voltage or the third working voltage is sufficient.
- the first part 341 includes a first body 3411 and a first insert 3412 injection-molded on the first body 3411
- the second part 342 includes a second body 3421 and an injection-molded second body 3421
- the first body 3411 and the second body 3421 are arranged symmetrically with each other
- the first insert 3412 and the second insert 3422 are also arranged symmetrically with each other.
- the first insert 3412 and the second insert 3422 are respectively electrically connected to the terminal assembly 350 so as to be indirectly electrically connected to each battery pack.
- the switch assembly 340 further includes an elastic member 3410 located between the first body 3411 and the second body 3421.
- the elastic member 3410 is a compression spring, and one end of the compression spring is clamped to the first body 3411 and the other end is clamped to the second body 3421 to prevent the compression spring from being inadvertently separated from the first body 3411 and the second body 3421 . Since the first body 3411 and the second body 3421 have the same structure and are arranged symmetrically, the structure of the first body 3411 will be described in detail below by taking the first body 3411 as an example.
- the first body 3411 (the second body 3421 ) includes a first column 3413 , a second column 3414 and a third column 3415 arranged in parallel with each other, and formed on the first column 3413 and the second column 3414
- the first slot 3416 between and the second slot 3417 formed between the second column 3414 and the third column 3415, the elastic member 3410 is connected and fixed with the two first columns 3413, and the second column 3414 faces the second
- One side of the slot 3417 is provided with a first guide surface 3418 extending obliquely
- the third column 3415 is also provided with a second guide surface 3419 extending obliquely. The angle between them) is greater than the inclination angle of the second guide surface 3419.
- One end of the first positive terminal 3511 and one end of the third negative terminal 3523 both extend below the corresponding second guide surface 3419 .
- the first insert 3412 is partially exposed to the first slot 3416 and the second slot 3417 of the first body 3411
- the second insert 3422 is partially exposed to the first insert of the second body 3421 Slot 3416 and second slot 3417.
- the first insert 3412 is formed on the first body 3411 for connecting with the positive pole of each battery pack in the battery pack 320
- the second insert 3422 is formed on the second body 3421 for connecting with each battery pack in the battery pack 320 connected to the negative pole. In the initial state, a space is left between the first insert 3412 and the second insert 3422 .
- the fourth negative terminal 3524 is provided with a convex hull 353 , and the convex hull 353 is used for making electrical contact with the first insert 3412 and the second insert 3422 to realize the electrical connection between the terminal assembly 350 and the switching assembly 340 .
- the first insert 3412 includes a first connecting piece 3423 connected to the first positive terminal 3511 and the fourth positive terminal 3514 at the same time, a second connecting piece 3424 connected to the second positive terminal 3512 , and The third connecting piece 3425 connected to the three positive terminals 3513;
- the second insert 3422 includes a fourth connecting piece 3423' connected to the second negative terminal 3522 and the third negative terminal 3523 at the same time, and a fifth connecting piece 3423' connected to the first negative terminal 3521
- the first connecting piece 3423 and the fourth connecting piece 3423' are symmetrically arranged,
- the second connecting piece 3424 and the fifth connecting piece 3424' are symmetrically arranged,
- the third connecting piece 3425 is symmetrically arranged with the sixth connecting piece 3425'.
- the first connecting piece 3423 (the fourth connecting piece 3423 ′) includes a first contact portion 34231 , a second contact portion 34232 and a third contact portion 34233 arranged in sequence.
- the first contact portion 34231 and the The second contact parts 34232 are symmetrical with each other, the second contact part 34232 and the third contact part 34233 are parallel to each other;
- the second connection piece 3424 (the fifth connection piece 3424') includes a fourth contact part 34241 and a fifth contact part 34242, the fourth The contact portion 34241 and the second contact portion 34232 are parallel (or flush) with each other, and the fifth contact portion 34242 is inclined in a direction away from the fourth contact portion 34241;
- the third connecting piece 3425 (the sixth connecting piece 3425') includes a sixth The contact part 34251 and the seventh contact part 34252, the sixth contact part 34251 and the fourth contact part 34241 are parallel to each other and aligned with the fourth contact part 34241 and the second contact part 34232,
- each contact portion is provided with a protruding protrusion 3426 ; the first contact portion 34231 , the fifth contact portion 34242 and the seventh contact portion 34252 are located on the first body 3411 and 34252 .
- the fifth contact portion 34242 and the seventh contact portion 34252 have the ability to elastically deform; the second contact portion 34232, the fourth contact portion 34241 and the sixth contact portion 34251
- the protruding portions 3426 of the third contact portion 34233 are accommodated and protrudingly exposed to the first slot 3416
- the protruding portions 3426 on the third contact portion 34233 are accommodated and protrudingly exposed to the second slot 3417 .
- the plug-in assembly 360 includes a first plug-in assembly 361 , a second plug-in assembly 362 and a third plug-in assembly 363 , and when the battery pack is connected to the first plug-in assembly 361 , the switching
- the component 340 When the component 340 is located in the first position (ie, in the initial state), the battery pack 300 outputs the first working voltage; when the battery pack is connected to the second plug-in component 362, the first part 341 and the second part 342 move relative to each other by the first distance, and the switching
- the component 340 is located at the second position, and the battery pack 300 outputs the second working voltage; when the battery pack is connected to the third plug-in component 363, the first part 341 and the second part 342 move relatively by a second distance, and the switch component 340 is located at the third position , the battery pack 300 outputs the third working voltage.
- the power tool system includes a first power tool, a second power tool and a third power tool
- the first power tool can run under the first working voltage, and the first tool interface is provided on the first power tool
- the second power tool can run at the second working voltage, and the second tool interface is provided on the second power tool
- the third power tool can run at the third working voltage, and the third tool interface is set on the third power tool.
- the first tool interface includes a first plug, such as the first plug assembly 361, the second tool interface includes a second plug, the second connector is, for example, the second plug assembly 362, the third tool The interface includes a third plug, the third plug is, for example, a third plug component 363, and the first plug component 361, the second plug component 362 and the third plug component 363 are preferably male plugs, and the switch component 340 is preferably a female plug plugins, but should not be limited by this.
- the following will take these three plug assemblies as examples to describe in detail the voltage switching principle of the battery pack of the present invention.
- the first plug-in assembly 361 includes a main body portion 3611 and a male terminal 3612 formed on the main body portion 3611.
- the male terminal 3612 includes a positive male terminal 3613 and a negative male terminal 3614.
- the positive male terminal 3613 is used for For docking with the first insert 3412
- the negative male terminal 3614 is used for docking with the second insert 3422, so as to realize the electrical conduction between the terminal assembly 350 of the battery pack 300 and the male terminal 3612 of the first plug assembly 361, Realize the transmission of current and voltage.
- the second contact portion 34232 of the first connecting piece 3423 , the fourth contact portion 34241 of the second connecting piece 3424 , and the first contact portion 34241 of the third connecting piece 3425 The six contact parts 34251 are in electrical contact with the positive male terminal 3613 at the same time.
- the second contact part 34232 of the fourth connection piece 3423', the fourth contact part 34241 of the fifth connection piece 3424', and the sixth connection piece 3425' The sixth contact portion 34251 is also in electrical contact with the negative male terminal 3614 at the same time.
- the first battery pack, the second battery pack, the third battery pack and the fourth battery pack are connected in parallel with each other, and the first working voltage output by the battery pack 300 is "n" V.
- the second plug assembly 362 includes a main body portion 3621 and a male terminal 3622 formed on the main body portion 3621 , and the male terminal 3622 includes a positive male terminal 3623 and a negative male terminal 3624, the positive male terminal 3623 is used for docking with the first insert 3412, and the negative male terminal 3624 is used for docking with the second insert 3422, so as to realize the terminal assembly 350 of the battery pack 300 and the second plug assembly 362
- the male terminal 3622 The electrical conduction is realized to realize the transmission of current and voltage.
- the difference from the first plug assembly 361 shown in FIG. 49 is that the distance between the positive male terminal 3623 and the negative male terminal 3624 of the second plug assembly 362 is greater than the distance between the positive male terminal 3613 and the negative electrode of the first plug assembly 361 Distance between male terminals 3614.
- the third contact portion 34233 of the first connecting piece 3423 is in electrical contact with the positive male terminal 3623 and the second connecting piece
- the fifth contact portion 34242 of the 3424 and the fifth contact portion 34242 corresponding to the fifth connecting piece 3424' both undergo elastic deformation and are in electrical contact.
- the seventh contact portion 34252 also undergoes elastic deformation and is in electrical contact, and the third contact portion 34233 of the fourth connection piece 3423' is in electrical contact with the negative male terminal 3624.
- the first battery pack and the second battery pack are formed in series with each other.
- the first battery string, the third battery group and the fourth battery group are connected in series to form a second battery string, and then the first battery string and the second battery string are connected in parallel (ie, series-parallel connection), and the second operation output by the battery pack 300
- the voltage is "2n"V.
- the third plug assembly 363 includes a main body portion 3631 and a male terminal 3632 formed on the main body portion 3631 , and the male terminal 3632 includes a positive male terminal 3633 and a negative male terminal 3634, the positive male terminal 3633 is used for docking with the positive terminal 351, and the negative male terminal 3634 is used for docking with the negative terminal 352, so as to realize the electrical conductivity between the terminal assembly 350 of the battery pack 300 and the male terminal 3632 of the third plug assembly 363. It is connected to realize the transmission of current and voltage.
- the difference from the second plug assembly 362 shown in FIG. 53 is that the distance between the positive male terminal 3633 and the negative male terminal 3634 of the third plug assembly 363 is greater than the distance between the positive male terminal 3623 and the negative electrode of the second plug assembly 362 Distance between male terminals 3624.
- both the positive male terminal 3633 and the negative male terminal 3634 are guided in the corresponding second guide Under the guidance of the surface 3419, it gradually slides in.
- the first body 3411 and the second body 3421 are pushed to move relatively by a second distance, and the first insert 3412 and the second insert 3422 move relatively 3410 is compressed; at the same time, the first connecting piece 3423 is disconnected from the first positive terminal 3511, and the fourth connecting piece 3423' is disconnected from the third negative terminal 3523.
- the positive male terminal 3633 is in electrical contact with the first positive terminal 3511 under the second guide surface 3419 , and the first The first contact portion 34231 of the connecting piece 3423 is in electrical contact with the first contact portion 34231 corresponding to the fourth connecting piece 3423 ′, and the fifth contact portion 34242 of the second connecting piece 3424 is in electrical contact with the fifth contact portion corresponding to the fifth connecting piece 3424 ′.
- the parts 34242 are elastically deformed and are in electrical contact
- the seventh contact part 34252 of the third connecting piece 3425 and the seventh contact part 34252 corresponding to the sixth connecting piece 3425' are also elastically deformed and are in electrical contact
- the negative male terminal 3634 and The third negative terminal 3523 under the second guide surface 3419 is in electrical contact.
- the first battery pack, the second battery pack, the fourth battery pack and the third battery pack are connected in series, and the third battery pack 300 outputs the third The operating voltage is "4n"V.
- the output of different voltages of the battery pack 300 can be realized, so as to meet the voltage requirements of three different power tools, and the switching between the three voltages is fast. , convenient.
- the first plug-in assembly 361 or the second plug-in assembly 362 or the third plug-in assembly 363 can be pulled out directly.
- the first body 3411 and the second body 3421 will be in the elastic part. Under the action of the elastic force of 3410, it returns to the initial state (ie, the low pressure state), so as to be ready to wait for the next insertion.
- the battery pack 300 of the present invention can also be applied to a charging system (not shown) including the aforementioned battery pack 300 and a charger for charging the battery pack 300 .
- a charging interface is provided on the charger to cooperate with the battery interface of the battery pack 300 .
- the battery pack 300 of the present embodiment realizes the series and parallel connection of each battery pack in the battery pack 300 by controlling the relative moving distance of the first part 341 and the second part 342 of the switching component 340 The state is switched, and then the output voltage of the battery pack 300 is changed, which improves the adaptability of the power tool system with the battery pack 300 .
- the present invention discloses a battery pack 400 , which includes a casing 410 , a battery pack 420 accommodated in the casing 410 , a circuit board 430 , and a switch assembly 440 electrically connected to the battery pack 420 .
- the battery pack 420 includes several battery packs, and the switch assembly 440 is electrically connected to each of the battery packs.
- the battery pack 400 of the present invention is used on a power tool system that further includes an external coupling 450 that can be inserted into the battery pack 400 for docking with the battery pack 400 .
- a battery interface is provided on the casing 410 to cooperate with the power tool, and an output terminal slot is provided on the battery interface to accommodate the output terminal.
- the casing 410 includes an upper casing 411 and a lower casing 412 .
- the battery pack 420 , the circuit board 430 and the switch assembly 440 are all accommodated in the accommodation space 413 enclosed by the upper casing 411 and the lower casing 412 .
- the top of the upper case 411 is provided with two docking slots 414
- the side wall of the upper case 411 is provided with two sockets 415
- the sockets 415 are provided with a positive terminal 416 and a negative terminal that are electrically connected to the battery pack 420 .
- the positive terminal 416 is connected to the positive terminal of the battery pack 420 to be connected to the external coupling member 450 as a total positive output terminal
- the negative terminal 417 is connected to the negative terminal of the battery pack 420 to serve as a total negative output terminal to the external coupling member.
- 450 is docked, so as to realize the output of the voltage in the battery pack 400 .
- the battery pack 420 includes at least a first battery pack A, a second battery pack B, a third battery pack C, and a fourth battery pack D, and the first positive electrode and the first negative electrode of the first battery pack A,
- the second positive pole and the second negative pole of the second battery pack B, the third positive pole and the third negative pole of the third battery pack C, and the fourth positive pole and the fourth negative pole of the fourth battery pack D all pass through the conductive sheet 421 and the switching component 440 It is convenient to control the connection mode between each battery pack by switching the component 440 to change the output voltage of the battery pack 400 .
- the first battery pack A is arranged horizontally
- the second battery pack B is arranged above the first battery pack A
- the third battery pack C is arranged above the second battery pack B
- the fourth battery pack D is arranged above the third battery pack C.
- the circuit board 430 is located below the switch assembly 440 and above the battery pack 420 for connecting the switch assembly 440 and the battery pack 420 .
- the positive terminal 416 and the negative terminal 417 are welded and fixed on the circuit board 430 .
- the switch assembly 440 has a first state, a second state, and a third state.
- the switch assembly 440 When the switch assembly 440 is in the first state, the battery pack 400 outputs the first operating voltage, and when the switch assembly 440 is in the first state In the second state, the battery pack 400 outputs the second working voltage, and when the switching component 440 is in the third state, the battery pack 400 outputs the third working voltage.
- the switch assembly 440 includes a gear trigger 441 , a switch assembly 442 fixedly connected to the gear trigger 441 , and a trigger assembly 443 connected to the battery pack 420 .
- the gear trigger member 441 is set in rotation, and when the gear trigger member 441 is in the first position, the switch component 442 triggers the corresponding trigger component 443, the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack 443 are triggered.
- the battery packs D are connected in parallel with each other, and the battery pack 400 outputs the first working voltage; when the gear trigger 441 rotates to the second position, the switch assembly 442 rotates synchronously and triggers the corresponding trigger assembly 443, the first battery pack A, the second battery The group B, the third battery group C and the fourth battery group D are connected in series and parallel (ie, series-parallel connection or parallel-series connection), and the battery pack 400 outputs the second working voltage; when the gear trigger 441 rotates to the third When in position, the switch assembly 442 rotates synchronously and triggers the corresponding trigger assembly 443, the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack D are connected in series with each other, and the battery pack 400 outputs the third operation voltage; the first working voltage is smaller than the second working voltage, and the second working voltage is smaller than the third working voltage.
- the gear trigger 441 is provided with a rack 4411
- the switch assembly 442 is coaxially arranged with the gear trigger 441 through its own fixed shaft 4422 , so that when the gear trigger 441 rotates, it can be driven synchronously.
- the switch assembly 442 rotates.
- the trigger assembly 443 is arranged on the outer peripheral side of the switch assembly 442.
- the switch assembly 442 is provided with a groove 4421.
- the trigger assembly 443 has a closed position and an open position. When the trigger assembly 443 is in the closed position, one end of the trigger assembly 443 protrudes into the closed position. In the groove 4421, when the trigger assembly 443 is in the disconnected position, one end of the trigger assembly 443 is separated from the groove 4421.
- the switch assembly 442 at least includes a first switch X, a second switch Y and a third switch Z arranged up and down, and the first switch X, the second switch Y and the third switch Z are all open There are grooves 4421, and the first switch X and the third switch Z are provided with three grooves 4421, the opening positions of the three grooves 4421 correspond to the same, and the second switch Y is provided with four grooves 4421, The four grooves 4421 are divided into two groups and are symmetrically arranged on both sides of the second switch Y.
- the trigger component 443 includes at least a first trigger component 4431, a second trigger component 4432 and a third trigger component 4433.
- the first trigger component 4431 includes a first trigger member 44311 set corresponding to the first switch X and set corresponding to the second switch Y
- the second trigger member 44312 and the third trigger member 44313 set corresponding to the third switch Z
- the second trigger component 4432 includes a fourth trigger member 44321 set corresponding to the first switch X, a third trigger member 44321 set corresponding to the second switch Y
- the third trigger assembly 4433 includes a seventh trigger 44331 corresponding to the first switch X, and an eighth trigger corresponding to the second switch Y 44332 and a ninth trigger 44333 set corresponding to the third switch Z.
- the first working voltage output by the battery pack 400 is “n”V; when the gear trigger 441 rotates to the In two positions, the second trigger 44312, the fourth trigger 44321, the sixth trigger 44323 and the eighth trigger 44332 are all in the closed position, the first trigger 44311, the third trigger 44313, the fifth trigger 44322,
- the seventh trigger member 44331 and the ninth trigger member 44333 are both in the disconnected position, the first battery pack A and the second battery pack B are connected in series to form a first battery string, and the third battery pack C and the fourth battery pack D are connected in series to form a first battery string.
- the second battery string, and then the first battery string and the second battery string are connected in parallel (ie, series-parallel connection), at this time, the second working voltage output by the battery pack 400 is “2n” V; when the gear trigger 441 rotates to In the third position, the second trigger assembly 4432 is in the closed position, the first trigger assembly 4431 and the third trigger assembly 4433 are in the disconnected position, the first battery pack A, the second battery pack B, the third battery pack C and the third The four battery packs D are connected in series with each other. At this time, the third working voltage output by the battery pack 400 is "4n"V.
- the battery pack 400 can also output the second working voltage “2n”V.
- each trigger member includes a static contact piece 444 , a movable contact piece 445 disposed opposite to the static contact piece 444 , and a switch trigger block 446 connected to the movable contact piece 445 .
- the switch trigger block 446 protrudes into the corresponding groove 4421
- the movable contact piece 445 is electrically connected with the static contact piece 444;
- the switch trigger block 446 is separated from the corresponding groove 4421, and the movable contact piece 445 is electrically connected to the static contact piece 444.
- the contact piece 445 is disconnected from the static contact piece 444 .
- the switch assembly 440 further includes a receiving box 4401 for receiving the switch component 442 and the trigger component 443 .
- the receiving box 4401 is provided with a plurality of receiving cavities for receiving the switch component 442 and the trigger component respectively.
- the static contact piece 444 is arranged to fit the inner side wall of the receiving cavity.
- Each trigger member further includes a spring 447 limited between the movable contact piece 445 and the inner side wall of the receiving cavity. When the trigger member is in the closed position, the spring 447 continues to push against the movable contact piece 445, so that the movable contact piece 445 is in contact with the static contact piece 445.
- the sheet 444 is kept in contact; in this way, the influence of vibration on the contact stability of the movable contact sheet 445 and the static contact sheet 444 is reduced.
- the accommodating cavity includes a first accommodating cavity 4402 for accommodating the switch assembly 442 and a second accommodating cavity 4403 for accommodating the trigger assembly 443 .
- the first accommodating cavity 4402 is approximately located at the center of the accommodating box 4401 .
- the second accommodating cavity 4403 is provided with three and is combined with the first accommodating cavity 4402 to form a T-shape.
- the first accommodating cavity 4402 is communicated with the second accommodating cavity 4403, and the static contact piece 444 is attached to the inner side wall of the second accommodating cavity 4403.
- the switch trigger block 446 is completely accommodated in the second accommodating cavity.
- the protruding part 4461 at one end of the switch trigger block 446 protrudes into the first receiving cavity 4402, and matches with the groove 4421 at the corresponding position.
- the bottom of the second accommodating cavity 4403 is provided with a first limiting groove 4404 , and the switch trigger block 446 is limited and accommodated in the first limiting groove 4404 ;
- a second limiting groove 4405 is provided, and one end of the spring 447 is limited in the second limiting groove 4405 .
- the rear of the switch trigger block 446 is provided with a card slot 4462.
- the movable contact piece 445 is perpendicular to the switch trigger block 446 and is held in the card slot 4462.
- the spring 447 is also accommodated in the card slot 4462 to push the switch assembly 442 when it rotates synchronously.
- the movable contact piece 445 and the switch trigger block 446 move from the open position to the closed position along the first limiting groove 4404 .
- both ends of the movable contact piece 445 are provided with movable contact points 4451
- each second receiving cavity 4403 is also provided with two static contact pieces 444 correspondingly
- each The static contact pieces 444 are all provided with static contact points 4441, so that the two movable contact points 4451 can be connected or disconnected with the corresponding two static contact points 4441 to realize the closing or disconnection of the trigger.
- the working principle of the switch assembly 440 can be briefly described as follows: the groove 4421 on the switch assembly 442 can be used to accommodate the protrusion 4461 of the switch trigger block 446 , when the groove 4421 moves to the point where the switch triggers When the block 446 is in the area, the spring 447 at the rear of the movable contact piece 445 automatically pushes the movable contact piece 445 and the switch trigger block 446, so that the protrusion 4461 of the switch trigger block 446 is pushed out from the second accommodating cavity 4403 to the first accommodating cavity 4402, The movable contact piece 445 is pushed from the open position to the closed position to realize the docking with the static contact piece 444; and the non-groove part of the switch assembly 442 can also push the switch trigger block 446 to move, so that the protruding part 4461 is retracted to the first position.
- the switch trigger block 446 needs to overcome the thrust of the spring 447 at the rear of the movable contact piece 445 to push the movable contact piece 445 to move from the closed position to the open position, so as to realize the connection between the movable contact piece 445 and the static contact piece 445.
- Contact pad 444 is disconnected.
- the external coupling member 450 includes a first external coupling member 451 , a second external coupling member 452 and a third external coupling member 453 .
- the power tool system includes the first power tool system.
- a tool, a second power tool, and a third power tool the first power tool can run at a first working voltage, and the first power tool is provided with a first tool interface that cooperates with the battery interface of the battery pack, specifically, the first power tool
- An external coupling member 451 is provided on the first power tool and is the first plug connecting the first power tool with the battery pack 400;
- the second power tool can run at the second working voltage, and the second power tool is provided with The second tool interface matched with the battery interface of the battery pack, specifically, the second external coupling member 452 is provided on the second power tool, and is the second plug connecting the second power tool with the battery pack 400;
- the third power tool It can operate at the third working voltage, and the third power tool is provided with a third tool interface that cooperates with the battery interface of the battery pack.
- the third external coupling member 453 is provided on the third power tool and is the first Three power tools are connected to the third plug of the battery pack 400 .
- the voltage switching principle of the battery pack 400 of the present invention will be described in detail below by taking these three external coupling members as examples. Definition
- Each battery pack includes 5 cells connected in series, and the voltage of each battery pack is 20V.
- the first external coupling member 451 includes a main body portion 4511 , a positive electrode plug 4512 and a negative electrode plug 4513 integrally formed with the main body portion 4511 .
- the positive plug 4512 is plugged with the positive terminal 416
- the negative plug 4513 is plugged with the negative terminal 417, so as to realize the electrical connection and mechanical connection between the battery pack 400 and the first external coupling 451, and realize the current and transmission of voltage.
- the gear trigger 441 does not rotate, at this time the gear trigger 441 is in the first position (ie the initial state), the first trigger 44311 (ie the switch X1), the second trigger 44312 (ie the switch Y1), the third trigger 44313 (ie the switch X1)
- the switch Z1), the seventh trigger 44331 (ie switch X3), the eighth trigger 44332 (ie switch Y3) and the ninth trigger 44333 (ie switch Z3) are all in the closed position
- the fifth trigger 44322 (ie switch Y2) and the sixth trigger 44323 (ie switch Z2) are in the off position, the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery
- the second external coupling member 452 includes a main body portion 4521 , a positive and negative plug-in tabs 4522 and 4523 integrally formed with the main body portion 4521 .
- the second external coupling member 452 is inserted into the second external coupling member 452 Then, the positive plug 4522 is plugged with the positive terminal 416, and the negative plug 4523 is plugged with the negative terminal 417, so as to realize the electrical connection and mechanical connection between the battery pack 400 and the second external coupling member 452, and realize the current transmission with voltage.
- a rack trigger rod 4524 is provided on the body portion 4521 of the second external coupling member 452, and the rack trigger rod 4524 is disposed opposite to the gear trigger member 441 so as to When the second external coupling member 452 is inserted, the rack trigger rod 4524 meshes with the gear trigger member 441 and drives the gear trigger member 441 to rotate forward.
- the rack trigger rod 4524 enters from the docking slot 414 and engages with the gear trigger member 441 , and pushes the second external coupling member 452 horizontally.
- the main body part 4521 until the positive insert piece 4522 is inserted with the positive terminal 416, and the negative insert piece 4523 is inserted with the negative terminal 417, at this time, the gear trigger 441 is driven by the rack trigger rod 4524.
- the second trigger 44312 (ie switch Y1), the fourth trigger 44321 (ie switch X2), the sixth trigger 44323 (ie switch Z2) and the eighth trigger 44332 (ie switch Y3) are all in the closed position
- the first trigger member 44311 (ie switch X1), the third trigger member 44313 (ie switch Z1), the fifth trigger member 44322 (ie switch Y2), the seventh trigger member 44331 (ie switch X3) and the ninth trigger member 44333 ( That is, the switches Z3) are all in the off position, forming a connection mode in which the first battery pack A and the second battery pack B are connected in series, the third battery pack C and the fourth battery pack D are connected in series, and then connected in parallel with each other (serial- connected in parallel).
- the third external coupling member 453 includes a main body portion 4531 , a positive and negative plug-in tabs 4532 and 4533 integrally formed with the main body portion 4531 , and inserted into the third external coupling member 453 Then, the positive plug 4532 is plugged with the positive terminal 416, and the negative plug 4533 is plugged with the negative terminal 417, so as to realize the electrical connection and mechanical connection between the battery pack 400 and the third external coupling member 453, and realize the current transmission with voltage.
- the third external coupling member 453 is also provided with a rack trigger rod 4534 to drive the gear trigger member 441 to rotate forward;
- the distance between the sockets 415 (or the positive and negative sockets 4532, 4533) is greater than the distance between the rack trigger rod 4524 and the sockets 415 (or the positive and negative sockets 4522, 4523), so that the gear triggers
- the rotation stroke of the gear trigger member 441 driven by the rack trigger rod 4534 is greater than the rotation stroke of the gear trigger member 441 driven by the rack trigger rod 4524 .
- the rack trigger rod 4534 enters from the docking slot 414 and engages with the gear trigger member 441 , and pushes the third external coupling member 453 horizontally.
- the main body part 4531 until the positive insert piece 4532 is inserted into the positive terminal 416, and the negative insert piece 4533 is inserted into the negative terminal 417.
- the gear trigger 441 is driven by the rack trigger rod 4534 to rotate to the third position.
- the first trigger 44311 ie switch X1
- the second trigger 44312 ie switch Y1
- the third trigger 44313 ie switch Z1
- the seventh trigger 44331 ie switch X3)
- the eighth trigger 44332 ie switch Y3
- the ninth trigger 44333 ie switch Z3
- the fourth trigger 44321 ie switch X2
- the fifth trigger 44322 ie switch Y2
- the sixth trigger 44323 ie, the switch Z2
- the gear trigger member 441 will be driven by the rack trigger rod 4524 to rotate by a first angle until the gear trigger member 441 is in the second position; the third external After the coupling member 453 is inserted, the gear trigger member 441 will rotate by a second angle under the driving of the rack trigger rod 4534 until the gear trigger member 441 is in the third position, and the first angle is smaller than the second angle.
- the first angle is 45°
- the second angle is 90°, but this should not be limited, and other angles can also be adjusted according to actual conditions.
- the output of different voltages of the battery pack 400 can be realized, so as to meet the voltage requirements of three different power tools, and the three voltages Switching between them is fast and convenient.
- the gear trigger member 441 will be on the rack trigger rod 4524 or the tooth
- the strip trigger lever 4534 rotates in the opposite direction until it reaches the first position, that is, the initial state, so as to be ready to wait for the next insertion.
- the battery pack 400 also has a transport mode, which is realized by a fourth external coupling member 454 , and the fourth external coupling member 454 also includes the main body portion 4541 and the main body portion. 4541 integrally formed positive plug 4542 and negative plug 4543, after inserting the fourth external coupling 454, the positive plug 4542 is plugged with the positive terminal 416, and the negative plug 4543 is plugged with the negative terminal 417, so that This achieves the electrical and mechanical connection between the battery pack 400 and the fourth external coupling member 454 .
- the fourth external coupling 454 is also provided with a rack trigger lever 4544, but the position of the rack trigger lever 4544 is opposite to that of the rack trigger lever 4534.
- the rack trigger lever 4544 is located on the right half of the body portion, the rack on the rack trigger lever 4544 faces the left direction, and the rack trigger lever 4534 is located at the left half of the body portion
- the rack on the side and rack trigger lever 4534 faces the right direction, so that the rack trigger lever 4534 can drive the gear trigger 441 to rotate forward, and the rack trigger lever 4544 drives the gear trigger 441 to rotate in the reverse direction.
- the battery pack 400 can be transported for long distances or otherwise uncharged in a protected state.
- the battery pack 400 and the operator are protected.
- the reverse rotation angle of the gear trigger 441 is preferably 22.5°, but should not be limited thereto.
- the battery pack 400 of the present invention can also be applied to a charging system (not shown) including the aforementioned battery pack 400 and a charger for charging the battery pack 400 .
- a charging interface is set on the charger to cooperate with the battery interface of the battery pack 400 .
- the gear trigger 441 is in the first position.
- the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack D are connected in parallel with each other,
- the charging voltage output by the charger is equal to the rated output voltage of a single battery pack, which is a low voltage, which protects the battery pack 400 from the impact of high current and high voltage.
- the battery pack 400 of this embodiment changes the closed or open state of the switch assembly 442 by rotating the gear trigger 441 to different positions (or different states), so that the corresponding trigger assembly 443
- the series and parallel state switching of each battery pack in the battery pack 400 can be realized, and then the output voltage of the battery pack 400 can be changed (at least three voltages can be output), which improves the suitability of the power tool system with the battery pack 400. match.
- the present invention discloses a battery pack 500 , which includes a casing 510 , a battery pack 520 accommodated in the casing 510 , a circuit board 530 , and a switch assembly 540 electrically connected to the battery pack 520 .
- the battery pack 520 includes several battery packs, and the switch assembly 540 is electrically connected to each battery pack.
- the battery pack 500 of the present invention is used on a power tool system that further includes an external coupling 550 that can be inserted into the battery pack 500 for docking with the battery pack 500 .
- a battery interface is provided on the housing 510 to cooperate with the power tool, and an output terminal slot is provided on the battery interface to accommodate the output terminal.
- the casing 510 includes an upper casing 511 and a lower casing 512 .
- the battery pack 520 , the circuit board 530 and the switch assembly 540 are all accommodated in the accommodation space 513 enclosed by the upper casing 511 and the lower casing 512 .
- a through hole 514 is defined on the top of the upper casing 511 , and two insertion ports 515 are formed on the side wall of the upper casing 511 .
- the positive terminal 516 is connected to the positive electrode of the battery pack 520 to be connected to the external coupling member 550 as a total positive output terminal
- the negative terminal 517 is connected to the negative electrode of the battery pack 520 to be used as a total negative output terminal to be connected to the external coupling member 550. Docking, so as to realize the output of the voltage in the battery pack 500 .
- the battery pack 520 includes at least a first battery pack A, a second battery pack B, a third battery pack C, and a fourth battery pack D, and the positive and negative electrodes of the first battery pack A and the second battery pack
- the positive electrode and negative electrode of B, the positive electrode and negative electrode of the third battery pack C, and the positive electrode and negative electrode of the fourth battery pack D are all connected to the switching component 540 through the conductive sheet 521, so that the switching component 540 can be used to control the connection between the battery packs. way, the output voltage of the battery pack 500 is changed.
- the circuit board 530 is located below the switch assembly 540 and above the battery pack 520 for connecting the switch assembly 540 and the battery pack 520 .
- the positive terminal 516 and the negative terminal 517 are welded and fixed on the circuit board 530 .
- the switch assembly 540 has a first state, a second state, and a third state.
- the switch assembly 540 When the switch assembly 540 is in the first state, the battery pack 500 outputs the first operating voltage, and when the switch assembly When 540 is in the second state, the battery pack 500 outputs the second working voltage, and when the switching component 540 is in the third state, the battery pack 500 outputs the third working voltage.
- the switch assembly 540 is rotated and has at least three target areas.
- the switch assembly 540 rotates to the first target area a (first position), the first battery pack A, the second battery pack B, the first battery pack The third battery pack C and the fourth battery pack D are connected in parallel with each other, and the battery pack 500 outputs the first operating voltage; when the switch assembly 540 rotates to the second target area b (second position), the first battery pack A, the second battery pack B.
- the third battery pack C and the fourth battery pack D are connected in series and parallel (ie, series-parallel connection or parallel-series connection), and the battery pack 500 outputs the second operating voltage; when the switching component 540 rotates to the third target area c (the third position), the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack D are connected in series with each other, and the battery pack 500 outputs a third working voltage; the first working voltage is lower than the second Working voltage, the second working voltage is lower than the third working voltage.
- the switch assembly 540 includes a fixed assembly 541 and a rotating assembly 542 rotatable relative to the fixed assembly 541 .
- the fixed assembly 541 is formed with a connector electrically connected to the battery pack 520 .
- the components include a first connector 543 located in the first target area a, a second connector 544 located in the second target area b, and a third connector 545 located in the third target area c.
- a trigger is formed on the rotating component 542 5420, when the rotating component 542 rotates to the first target area a, the triggering component 5420 is electrically connected to the first connecting component 543; when the rotating component 542 rotates to the second target area b, the triggering component 5420 is electrically connected to the second connecting component 544 Electrical connection; when the rotating component 542 rotates to the third target area c, the trigger element 5420 is electrically connected with the third connection element 545 .
- the first connecting member 543 , the second connecting member 544 and the third connecting member 545 are all formed on the conductive sheet 521 at one end and fixed on the fixing member 541 at the other end.
- the fixing assembly 541 includes a first fixing portion 5411 and a second fixing portion 5412 arranged in a disc shape, and a connecting portion 5413 connecting the first fixing portion 5411 and the second fixing portion 5412 , the diameter of the first fixing portion 5411 is smaller than the diameter of the second fixing portion 5412 , and the first fixing portion 5411 is embedded in the circuit board 530 to realize the fixed connection between the fixing component 541 and the circuit board 530 .
- the connecting portion 5413 is disposed perpendicular to the circuit board 530 , so that there is a space between the second fixing portion 5412 and the circuit board 530 .
- a hole 5414 is formed at the center of the second fixing portion 5412 , the first target area a, the second target area b and the third target area c are distributed on the second fixing portion 5412 of the fixing component 541 , and the first target area a , the second target area b and the third target area c are all provided with a number of via holes 5415, and these via holes 5415 are all provided through the second fixing portion 5412 for the corresponding first connecting member 543, second connecting member 544 and The third connecting member 545 passes through and is exposed to the upper surface of the second fixing portion 5412 .
- four triggers 5420 on the rotating assembly 542 are arranged in a rectangular strip shape, and the four triggers 5420 are parallel to each other and spaced apart for connecting with the second fixing portion.
- the first connecting member 543 , the second connecting member 544 or the third connecting member 545 on the 5412 are electrically connected, so as to realize the electrical connection between the triggering member 5420 and the battery pack 520 .
- the first connecting member 543 , the second connecting member 544 and the third connecting member 545 all include a first positive protrusion connected to the first positive electrode of the first battery pack A
- the second negative convex column B- connected with the two negative poles, the third positive convex column C+ connected with the third positive pole of the third battery pack C, and the third negative convex column C- connected with the third negative pole of the third battery pack C
- the first positive stud A+, the second positive stud B+, the third positive stud C+ and the fourth positive stud D+ are arranged in the first row
- the first negative stud A-, the second negative stud B-, the third negative stud C- and the fourth negative stud D- are arranged in the second row
- the first row and the second row are parallel to each other and arranged at intervals
- the rotating component 542 rotates to the first target area a the two trigger elements 5420 are in electrical contact with the first row and the second row respectively, so that the positive protrusions in the first row are connected to each other and the The negative bumps are connected to each other.
- the first battery pack A, the second battery pack B, the third battery pack C, and the fourth battery pack D are connected in parallel with each other, and the first working voltage output by the battery pack 500 is “n”V.
- the third negative studs C- and the fourth positive studs D+ are arranged in the first row
- the positive convex column B+ is arranged in the second row
- the second negative convex column B- and the fourth negative convex column D- are arranged in the third column
- the third positive convex column C+ and the first positive convex column A+ are arranged in the third column.
- Four rows, the first row, the second row, the third row and the fourth row are arranged in parallel and spaced apart from each other.
- the four trigger elements 5420 are connected to the first row, the second row and the second row respectively.
- the row, the third row, and the fourth row are in electrical contact, so that the protruding posts in the first row are connected to each other, the protruding posts in the second row are connected to each other, the protruding posts in the third row are connected to each other, and the protruding posts in the fourth row are connected to each other.
- the columns are connected to each other.
- the first battery pack A and the second battery pack B are connected in series to form a first battery string
- the third battery pack C and the fourth battery pack D are connected in series to form a second battery string
- the first battery string is connected to
- the second battery strings are connected in parallel (ie, series-parallel connection), and the second operating voltage output by the battery pack 500 is “2n”V.
- the second negative studs B- and the third positive studs C+ are arranged in the first row
- the positive convex column B+ is arranged in the second column
- the third negative convex column C- and the fourth positive convex column D+ are arranged in the third column
- the first column, the second column and the third column are parallel to each other and spaced apart.
- the three trigger elements 5420 are in electrical contact with the first row, the second row and the third row respectively, so that the protruding posts of the first row are connected to each other and the The protruding posts are connected to each other and the protruding posts of the third row are connected to each other.
- the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack D are connected in series with each other, and the first battery pack 500 outputs the first battery pack 500 .
- Three working voltage is "4n"V.
- the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack can also be rotated according to the actual situation.
- D is designed to be connected in parallel-series, and at this time, the battery pack 500 can also output the second working voltage "2n"V.
- the second fixing portion 5412 is further provided with a fourth target area d.
- the fourth target area d belongs to a part of the second fixing portion 5412 without any protruding post to connect with the battery pack 520 .
- the battery pack 500 is electrically connected so that when the rotating component 542 rotates to the fourth target area d, the battery pack 500 has no voltage output. At this time, the battery pack 500 can be transported long-distance or other non-charged operations in a protected state, which protects the battery Package 500 and operator.
- the rotating assembly 542 includes a rotating body 5421 and a rotating member 5422 formed on the rotating body 5421.
- the triggering member 5420 is embedded in the rotating body 5421 and exposed on the surface of the rotating body 5421 facing the fixed assembly 541. In this way, the triggering member 5420 can be electrically contacted with the corresponding first connecting member 543 , the second connecting member 544 or the third connecting member 545 during rotation.
- a limit rod 5423 is formed at the bottom of the rotating body 5421, and the limit rod 5423 is used to pass through the hole 5414 on the second fixing part 5412, so as to realize the connection between the rotating assembly 542 and the fixed assembly 541, and when the rotating member is pulled 5422, the rotating assembly 542 can be flexibly rotated.
- protrusions 5424 are provided on the outer peripheral edge of the rotating body 5421 , and receiving grooves 518 are correspondingly formed on the inner side wall of the upper casing 511 .
- receiving grooves 518 are correspondingly formed on the inner side wall of the upper casing 511 .
- the convex The 5424 is limited and received in the receiving groove 518 corresponding to the target area.
- protrusions 5424 are provided and are evenly distributed on the peripheral outer edge of the rotating body 5421 ; four protrusions 519 are correspondingly provided on the inner side wall of the upper casing 511 , and each protrusion 519 is A receiving slot 518 is opened, so that the four protrusions 5424 can be used when the rotating assembly 542 performs rotation switching among the first target area a, the second target area b, the third target area c and the fourth target area d
- the rotation assembly 542 is fixed by the mutual limitation of the four receiving grooves 518 , which enhances the structural stability of the rotation assembly 542 .
- only one or two or three protrusions 5424 may be provided, and three or four receiving grooves 518 may be provided, as long as the rotation assembly 542 can be fixed, which is not limited here.
- the rotating member 5422 protrudes outward from the surface of the rotating body 5421 away from the fixed component 541 , so that when the rotating member 5422 is pulled, the rotating body 5421 and the trigger member 5420 are driven to rotate synchronously.
- the rotating member 5422 protrudes from the through hole 514 at the top of the upper casing 511, so that when the rotating member 5422 is pulled, the rotating body 5421 and the trigger member 5420 are driven to synchronize the first target area a and the second target area a. Rotate and switch among the area b, the third target area c and the fourth target area d.
- the external coupling member 550 includes a first external coupling member, a second external coupling member and a third external coupling member.
- the power tool system includes a first power tool, a second power tool and a third power tool.
- a power tool the first power tool can operate at a first working voltage, and the first power tool has a first tool interface, the first tool interface includes a first plug provided on the first power tool, and the first plug is, for example, a first external coupling; a second power tool capable of operating at a second operating voltage, and the second power tool has a second tool interface including a second plug disposed on the second power tool, and the second power tool
- the plug is, for example, a second external coupling;
- the third power tool is capable of operating at a third operating voltage, and the third power tool has a third tool interface comprising a third plug arranged on the third power tool,
- the third plug is, for example, a third external coupling.
- each plug is provided with a triggering device, and the triggering device is used for the cooperation of the switching components, so that the switching components can be switched between different states.
- the voltage switching principle of the battery pack 500 of the present invention will be described in detail below by taking these three external coupling members as examples. Definition
- Each battery pack includes 5 cells connected in series, and the voltage of each battery pack is 20V.
- the rotation of the rotating assembly 542 is achieved by manually rotating the rotating member 5422, so the structures of the first external coupling member, the second external coupling member and the third external coupling member may be the same or different. .
- an external coupling member with the same structure will be used as an example for illustration below.
- the external coupling member 550 includes a main body portion 551 , a positive terminal piece 552 and a negative terminal plug piece 553 integrally formed with the main body portion 551 .
- the negative plug 553 is plugged with the negative terminal 517, so as to realize the electrical connection and mechanical connection between the battery pack 500 and the external coupling member 550, and realize the transmission of current and voltage.
- the battery pack 500 when the battery pack 500 is connected to the first power tool, manually rotate the rotating member 5422 to rotate the rotating assembly 542 as a whole to the first target area a. At this time, the first one at the bottom of the main body 5421 is rotated.
- the trigger 5420 connects the first positive stud A+, the second positive stud B+, the third positive stud C+, and the fourth positive stud D+, and the fourth trigger 5420 connects the first negative stud A-, the second positive stud C+, and the fourth positive stud D+.
- the negative studs B-, the third negative studs C- and the fourth negative studs D- are connected, so that the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack D are connected in parallel with each other .
- the rotating member 5422 is manually rotated to make the entire rotating assembly 542 rotate to the second target area b.
- the first one at the bottom of the main body 5421 is rotated.
- the trigger 5420 connects the third negative convex column C- with the fourth positive convex column D+
- the second trigger 5420 connects the first negative convex column A- with the second positive convex column B+
- the third trigger 5420 connects the first negative convex column A- with the second positive convex column B+.
- the second negative bump B- is connected to the fourth negative bump D-, and the fourth trigger member 5420 connects the third positive bump C+ to the first positive bump A+, forming the first battery pack A and the second battery
- the group B is connected in series, the third battery group C and the fourth battery group D are connected in series, and then connected in parallel with each other (series-parallel connection).
- the battery pack 500 when the battery pack 500 is connected to the third power tool, manually rotate the rotating member 5422 to rotate the rotating component 542 to the third target area c as a whole.
- the trigger 5420 connects the second negative post B- to the third positive post C+
- the second trigger 5420 connects the first negative post A- to the second positive post B+
- the fourth trigger 5420 connects the first negative post A- to the second positive post B+.
- the third negative stud C- is connected to the fourth positive stud D+, so that the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack D are connected in series with each other.
- the output of different voltages of the battery pack 500 can be achieved, so as to meet the voltage requirements of three different power tools, and the three Switching between voltages is quick and easy.
- the entire rotating component 542 is rotated to the fourth target area d, and then the external coupling member 550 can be pulled out.
- the rotation of the rotating member 5422 can also be set to be triggered automatically.
- a trigger part is provided on the coupling part, so that when the battery pack 500 is connected with the first electric tool, the second electric tool or the third electric tool, the corresponding trigger part can be used to trigger the rotating part 5422, so that the rotating assembly 542 can be rotated to the corresponding Target area, battery pack 500 output voltage.
- the trigger member may be a protrusion protruding on the first external coupling member, the second external coupling member or the third external coupling member, and the protrusion portion can be used to push the rotating member 5422 to rotate;
- the trigger member may also be It is a toothed rack set on the first external coupling member, the second external coupling member or the third external coupling member.
- the corresponding teeth need to be set on the rotating member 5422, and the mutual meshing of the two teeth is used. It can be realized that the trigger part pushes the rotating member 5422 to rotate. Of course, this should not be the limit.
- the battery pack 500 of the present invention can also be applied to a charging system (not shown) including the aforementioned battery pack 500 and a charger for charging the battery pack 500 .
- a charging interface is set on the charger to cooperate with the battery interface of the battery pack 500 .
- the rotating assembly 542 is rotated to the first target area a.
- the first battery pack A, the second battery pack B, the third battery pack C and the fourth battery pack D In parallel with each other, the charging voltage output by the charger is equal to the rated output voltage of a single battery pack, which is a low voltage, which protects the battery pack 500 from the impact of high current and high voltage.
- the battery pack 500 of the present embodiment uses the rotation of the rotating component 542 to connect with connectors in different target areas, so as to realize the series-parallel state switching of each battery pack in the battery pack 500 , Then, the output voltage of the battery pack 500 is changed (at least three voltages can be output), which improves the adaptability of the power tool system having the battery pack 500 .
- this embodiment means that a specific feature, structure, material or characteristic described in connection with this embodiment or example is included in at least one aspect of the present invention in one embodiment or example.
- schematic representations of the above terms do not necessarily refer to the same embodiment or example.
- the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
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Abstract
本发明公开了一种多压电池包,所述多压电池包包括:壳体;电池组,收容在所述壳体中,且每个电池组包括多个相互串联的电芯;电池界面,所述电池界面设置在所述壳体上,用以与所述电动工具进行配合;切换组件,设置在所述壳体内并与所述电池组电性连接,所述切换组件具有第一状态,第二状态及第三状态;当所述切换组件分别处于第一状态、第二状态和第三状态时,所述多压电池包分别输出第一工作电压、第二工作电压和第三工作电压;其中,所述第三工作电压大于所述第二工作电压,所述第二工作电压大于第一工作电压。通过本公开的一种多压电池包,提高了具有该电池包的电动工具系统的适配性。
Description
本发明涉及电池包技术领域,尤其涉及一种多压电池包、电动工具系统及充电系统。
在园林机械、动力工具行业,具有不同额定电压的工具通常需要由不同额定电压的电池包来提供动力,这造成了电池包种类的增多和成本的增加。
有鉴于此,确有必要设计一种改进的电池包、电动工具系统及充电系统,以解决上述问题。
发明内容
本发明的目的在于提供一种多压电池包、电动工具系统及充电系统,通过本发明提供的所述多压电池包能够提供多种输出电压,以及多种输出电压的快捷切换。
为解决上述技术问题,本发明是通过以下技术方案实现的:
本发明提供的一种多压电池包,用以与具有不同工作电压的电动工具配合,包括:
壳体;
电池组,收容在所述壳体中,所述电池组包括:
第一电池组,所述第一电池组包括多个相互串联的电芯;
第二电池组,所述第二电池组包括多个相互串联的电芯;
第三电池组,所述第三电池组包括多个相互串联的电芯;
第四电池组,所述第四电池组包括多个相互串联的电芯;
电池界面,所述电池界面设置在所述壳体上,用以与所述电动工具进行配合;
切换组件,设置在所述壳体内并与所述电池组电性连接,所述切换组件具有第一状态,第二状态及第三状态;
当所述切换组件处于第一状态时,所述多压电池包输出第一工作电压;
当所述切换组件处于第二状态时,所述多压电池包输出第二工作电压;
当所述切换组件处于第三状态时,所述多压电池包输出第三工作电压;
其中,所述第三工作电压大于所述第二工作电压,所述第二工作电压大于第一工作电压。
在本发明一实施例中,所述第一电池组设有第一正极和第一负极,所述第二电池组设有第二正极和第二负极,所述第三电池组设有第三正极和第三负极,所述第四电池组设有第四正极和第四负极。
在本发明一实施例中,当所述切换组件处于第一状态时,所述切换组件位于第一位置,当所述切换组件处于第二状态时,所述切换组件位于第二位置,当所述切换组件处于第三状态时,所述切换组件位于第三位置。
在本发明一实施例中,当切换组件处于第一状态时,所述第一正极,第二正极,第三正极,第四正极相互连接,所述第一负极,第二负极,第三负极,第四负极相互连接,所述第一电池组,第二电池组,第三电池组和第四电池组相互并联。
在本发明一实施例中,当切换组件处于第二状态时,所述第一正极,第二正极相互连接,所述第一负极,第二负极,第三正极,第四正极相互连接,所述第三负极,第四负极相互连接,所述第一电池组,第二电池组,第三电池组和第四电池组处于并-串联状态。
在本发明一实施例中,当切换组件处于第二状态时,所述第一正极,第三正极相互连接,所述第一负极,第二正极相互连接,所述第三负极,第四正极相互连接,所述第二负极,第四负极相互连接,所述第一电池组,第二电池组,第三电池组和第四电池组处于串-并联状态。
在本发明一实施例中,当切换组件处于第三状态时,所述第一负极与所述第二正极连接,所述第二负极与所述第三正极连接,所述第三负极与所述第四正极连接,所述第一电池组,第二电池组,第三电池组和第四电池组相互串联。
在本发明一实施例中,所述第一电池组,第二电池组,第三电池组和第四电池组的电压分别为nV,所述第一工作电压为nV,所述第二工作电压为2nV,所述第三工作电压为4nV。
在本发明一实施例中,当nV为18V,所述第一工作电压为18V,所述第二工作电压为36V,所述第三工作电压为72V。
在本发明一实施例中,当nV为20V,所述第一工作电压为20V,所述第二工作电压为40V,所述第三工作电压为80V。
在本发明一实施例中,当nV为24V,所述第一工作电压为24V,所述第二工作电压为48V,所述第三工作电压为96V。
在本发明一实施例中,所述电池包还包括电路板和输出端子,所述电路板收容在所述壳体内并与输出端子电性连接,所述输出端子用于向电所述动工具输出能量,所述电池界面上设置有输出端子槽,所述输出端子槽用于收容所述输出端子。
在本发明一实施例中,所述第一电池组水平设置,所述第二电池组设置在所述第一电池组之上,所述第三电池组设置在所述第二电池组之上,所述第四电池组设置在所述第三电池组之上。
在本发明一实施例中,所述第一电池组,第二电池组,第三电池组和第四电池组包括5节电芯。
在本发明一实施例中,所述第一电池组,第二电池组,第三电池组和第四电池组包括6节电芯。
在本发明一实施例中,在初始状态下,所述切换组件处于第一状态,所述第一电池组,第二电池组,第三电池组和第四电池组相互并联,所述电池包输出第一工作电压。
本发明还提供一种电动工具系统,包括:
第一电动工具,所述第一电动工具具有第一工具界面并能够在第一工作电压下工作;
第二电动工具,所述第二电动工具具有第二工具界面并能够在第二工作电压下工作;
第三电动工具,所述第三电动工具具有第三工具界面并能够在第三工作电压下工作;
多压电池包,所述多压电池包包括:
壳体;
电池组,收容在所述壳体中,所述电池组包括:
第一电池组,所述第一电池组包括多个相互串联的电芯;
第二电池组,所述第二电池组包括多个相互串联的电芯;
第三电池组,所述第三电池组包括多个相互串联的电芯;
第四电池组,所述第四电池组包括多个相互串联的电芯;
电池界面,所述输出界面设置在所述壳体上,用以与(1)所述第一电动工具的第一工具界面进行配合;(2)所述第二电动工具的第二工具界面配合;(3)所述第三电动工具的第三工具界面进行配合;
切换组件,设置在所述壳体内并与所述电池组电性连接,所述切换组件具有第一状态,第二状态,第三状态;
当所述第一电动工具与所述多压电池包配合时,所述切换组件处于第一状态,所述多压电池包向所述第一电动工具输出第一工作电压;
当所述第二电动工具与所述多压电池包配合时,所述切换组件处于第二状态,所述多压电池包向所述第二电动工具输出第二工作电压;
当所述第三电动工具与所述多压电池包配合时,所述切换组件处于第三状态,所述多压电池包向所述第三电动工具输出第三工作电压;
其中,所述第三工作电压大于所述第二工作电压,所述第二工作电压大于第一工作电压。
在本发明一实施例中,所述第一工具界面具有第一配置的第一插头,所述第二工具界面具有第二配置的第二插头,所述第三工具界面具有第三配置的第三插头,第一插头,第二插头,第三插头的配置不同。
在本发明一实施例中,所述第一插头.第二插头,第三插头中至少两个设有触发装置,所述触发装置用于所述切换组件进行配合,以使所述切换组件在不同状态之间转换。
本发明还提供一种充电系统,包括,
充电器,所述充电器设有充电界面;
多压电池包,用以与具有不同工作电压的电动工具配合,包括:
壳体;
电池组,收容在所述壳体中,所述电池组包括:
第一电池组,所述第一电池组包括多个相互串联的电芯;
第二电池组,所述第二电池组包括多个相互串联的电芯;
第三电池组,所述第三电池组包括多个相互串联的电芯;
第四电池组,所述第四电池组包括多个相互串联的电芯;
电池界面,所述电池界面设置在所述壳体上,用以与所述电动工具进行配合;
切换组件,设置在所述壳体内并与所述电池组电性连接,所述切换组件具有第一状态,第二状态,第三状态;
当所述切换组件处于第一状态时,所述多压电池包输出第一工作电压;
当所述切换组件处于第二状态时,所述多压电池包输出第二工作电压;
当所述切换组件处于第三状态时,所述多压电池包输出第三工作电压;
其中,所述第三工作电压大于所述第二工作电压,所述第二工作电压大于第一工作电压;
当所述多压电池包与所述充电器配合时,所述充电界面与所述电池界面配合,所述切换组件处于第一状态,所述第一电池组,第二电池组,第三电池组和第四电池组相互并联连接,所述充电器以第一工作电压为所述多压电池包充电。
如上所述使用本发明的一种多压电池包,通过调整切换组件的状态,来实现电池包内各个电池组的串并联状态切换,继而实现电池包输出电压的变化,提高了具有该电池包的电动工具系统的适配性。
当然,实施本发明的任一产品并不一定需要同时达到以上所述的所有优点。
为了更清楚地说明本发明实施例的技术方案,下面将对实施例描述所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明电动工具系统的立体图。
图2是图1所示电动工具系统的分解图。
图3是图2中切换组件的分解图。
图4是图1所示电动工具系统的局部组合立体图。
图5是图3中内部插片座的结构示意图。
图6是图5所示内部插片座的另一视角结构示意图。
图7是图5中内部插片座去除基体后的结构示意图。
图8是图3中端子组件的结构示意图。
图9是图3中电极插片座的结构示意图。
图10是图3中第一外部插片座的立体分解图。
图11是图10所示的第一外部插片座插入后,端子组件与第一连接组件连接时的结构示意图。
图12是图10所示的第一外部插片座插入后,电池包内的电路连接状态示意图。
图13是图10所示的第一外部插片座插入后,电池组的连接电路图。
图14是第二外部插片座的立体分解图。
图15是图14所示的第二外部插片座插入后,端子组件与第二连接组件连接时的结构示意图。
图16是图14所示的第二外部插片座插入后,电池包内的电路连接状态示意图。
图17是图14所示的第二外部插片座插入后,电池组的连接电路图。
图18是图7中第二连接组件的另一实施例。
图19是图14所示的第二外部插片座插入后,端子组件与图18所示的第二连接组件连接时的结构示意图。
图20是对应于图19的电池包内的电路连接状态示意图。
图21是对应于图19的电池组的连接电路图。
图22是第三外部插片座的立体分解图。
图23是图22所示的第三外部插片座插入后,端子组件与第三连接组件连接时的结构示意图。
图24是图22所示的第三外部插片座插入后,电池包内的电路连接状态示意图。
图25是图22所示的第三外部插片座插入后,电池组的连接电路图。
图26是本发明电池包的立体图。
图27是图26所示电池包的分解图。
图28是图26中壳体的分解图。
图29是图28中限位块和滑槽处的放大图。
图30是图27中端子组件的分解图。
图31是图30的另一角度示意图。
图32是图27中切换组件的分解图。
图33是图32中连接组件的分解图。
图34是图32中滑动组件的另一角度立体图。
图35是图32中滑动组件的分解图。
图36是第一外部插片座插入后,滑动部处于第一位置时的结构示意图。
图37是第一外部插片座插入后,连接端子与第一接触端子连接时的结构示意图。
图38是第一外部插片座插入后,电池组的连接电路图。
图39是第二外部插片座插入后,滑动部处于第二位置时的结构示意图。
图40是第二外部插片座插入后,连接端子与第二接触端子连接时的结构示意
图41是第二外部插片座插入后,电池组的连接电路图。
图42是第三外部插片座插入后,滑动部处于第三位置时的结构示意图。
图43是第三外部插片座插入后,连接端子与第三接触端子连接时的结构示意图。
图44是第三外部插片座插入后,电池组的连接电路图。
图45是本发明电动工具系统的立体图。
图46是图45所示电动工具系统的分解图。
图47是图46中切换组件和端子组件的组合侧视图。
图48是图47中第一嵌件和第二嵌件的立体结构示意图。
图49是图45中第一插接组件的立体结构示意图。
图50是图49所示的第一插接组件开始插入时,切换组件与端子组件的组合结构示意图。
图51是图49所示的第一插接组件插入后,电池包内的电路连接状态示意图。
图52是图49所示的第一插接组件插入后,电池组的连接电路图。
图53是第二插接组件的立体结构示意图。
图54是图53所示的第二插接组件开始插入时,切换组件与端子组件的组合结构示意图。
图55是图53所示的第二插接组件插入后,电池包内的电路连接状态示意图。
图56是图53所示的第二插接组件插入后,电池组的连接电路图。
图57是第三插接组件的立体结构示意图。
图58是图57所示的第三插接组件开始插入时,切换组件与端子组件的组合结构示意图。
图59是图57所示的第三插接组件插入后,电池包内的电路连接状态示意图。
图60是图57所示的第三插接组件插入后,电池组的连接电路图。
图61是本发明电动工具系统的立体图。
图62是图61所示电动工具系统的分解图。
图63是图62中壳体组件的分解图。
图64是图62中切换组件的立体结构示意图。
图65是图64所示切换组件的部分分解图。
图66是图65中开关组件的截面分解图。
图67是图65中单个触发件的分解图。
图68是图65中收容箱的结构示意图。
图69是图62中第一外部耦合件的立体图。
图70是图69所示的第一外部耦合件插入后,开关组件与对应触发组件配合的结构示意图。
图71是图69所示的第一外部耦合件插入后,电池包内的连接电路图。
图72是第二外部耦合件的立体图。
图73是图72所示的第二外部耦合件插入后,电池包内的连接电路图。
图74是第三外部耦合件的立体图。
图75是图74所示的第三外部耦合件插入后,电池包内的连接电路图。
图76是第四外部耦合件的立体图。
图77是图76所示的第四外部耦合件插入后,电池包内的连接电路图。
图78是本发明电动工具系统的立体图。
图79是图78所示电动工具系统的分解图。
图80是图79中壳体组件的分解图。
图81是图80中上壳体的另一角度立体图。
图82是图79中切换组件与导电片连接时的部分分解图。
图83是图82中固定组件的立体图。
图84是图83所示固定组件的另一角度立体图。
图85是图82中转动组件的立体图。
图86是图85所示转动组件的另一角度立体图。
图87是图79中外部耦合件的立体图。
图88是图87所示的外部耦合件插入后,将转动组件旋转至第一目标区域时的电路原理图。
图89是图87所示的外部耦合件插入后,将转动组件旋转至第二目标区域时的电路原理图。
图90是图87所示的外部耦合件插入后,将转动组件旋转至第三目标区域时的电路原理图。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
如图1至图3所示,本发明揭示了一种电池包100,包括壳体110和收容在壳体110内的电池组120、电路板130以及与电池组120电性连接的切换组件140和端子组件142。切换组件140与电池组120电性连接。壳体110上设置有电池界面,以与电动工具配合,且电池界面上设置有输出端子槽,以收容输出端子。切换组件140包括电极插片座141和与端子组件142相对设置的内部插片座143,本发明中,端子组件142优选为母端子组件,但不应以此为限。本发明的电池包100使用于一电动工具系统上,该电动工具系统还包括可插入电池包100以与电池包100的端子组件142对接的外部插片座150。
如图4与图8并结合图2与图3所示,电极插片座141设有容纳腔1411,端子组件142和内部插片座143均收容于容纳腔1411,端子组件142通过电路板130与电池组120的电极电性连接。具体来讲,端子组件142包括正极端子1421和负极端子1422,其中正极端子1421包括第一正极端子1423和第二正极端子1424,第一正极端子1423作为一个总正输出端子与外部插片座150进行对接,第二正极端子1424分别与对应电池组120的正极电性连接;负极端子1422也包括第一负极端子1425和第二负极端子1426,第一负极端子1425作为一个总负输出端子与外部插片座150进行对接,第二负极端子1426分别与对应电池组120的负极电性连接,以此来实现电池包100内电压的输出。
如图2至图8所示,本实施例中,第一正极端子1423和第一负极端子1425靠近电极插片座141的一端设置,第二正极端子1424和第二负极端子1426大致位于电极插片座141的中间位置处,且第二正极端子1424与第二负极端子1426在一条直线上呈左右排布。电池组120至少包括第一电池组121、第二电池组122、第三电池组123及第四电池组124;对应地,第一正极端子1423与第一电池组121的正极连接,第一负极端子1425与第四电池组124的负极相连;第二正极端子1424和第二负极端子1426均设置有4个,且从右往左以++++----的方式排列,以分别与四个电池组连接。
如图2所示,每个电池组内均设有多个电芯,该多个电芯可以相互串联,也可以相互并联,此处不作过多的描述。假定每个电池组的额定输出电压为“n”V,即第一电池组121的额定输出电压u1=第二电池组122的额定输出电压u2=第三电池组123的额定输出电压u3=第四电池组124的额定输出电压u4=“n”V。在本实施例中,每个电池组的额定输出电压例如为18V。
如图2所示,切换组件140具有第一状态,第二状态及第三状态,当切换组件140处于第一状态时,电池包100输出第一工作电压,当切换组件140处于第二状态时,电池包100输出第二工作电压;当切换组件140处于第三状态时,电池包100输出第三工作电压。在本 实施例中,切换组件140滑动设置,当切换组件140位于第一位置时,第一电池组121、第二电池组122、第三电池组123及第四电池组124相互并联,电池包100输出第一工作电压;当切换组件140滑动至第二位置时,第一电池组121的正极与第二电池组122的正极相连、第一电池组121的负极与第二电池组122的负极相连后与第三电池组123的正极和第四电池组124的正极相连、第三电池组123的负极与第四电池组124的负极相连,电池包100输出第二工作电压;当切换组件140滑动至第三位置时,第一电池组121、第二电池组122、第三电池组123及第四电池组124相互串联,电池包100输出第三工作电压。第一工作电压小于第二工作电压,第二工作电压小于第三工作电压。
如图5至图8并结合图3与图4所示,内部插片座143内设有与端子组件142相对应且间隔设置的第一连接组件144、第二连接组件145及第三连接组件146,内部插片座143滑动设置,且当位于第一位置时,端子组件142与第一连接组件144电性连接,当滑动至第二位置时,端子组件142与第二连接组件145电性连接,当滑动至第三位置时,端子组件142与第三连接组件146电性连接。
如图2至图8所示,第一连接组件144、第二连接组件145及第三连接组件146沿内部插片座143的滑动方向(上下方向)间隔设置,当端子组件142与第一连接组件144电性连接时,第一电池组121、第二电池组122、第三电池组123及第四电池组124相互并联,此时电池包100输出的第一工作电压为“n”V;当端子组件142与第二连接组件145电性连接时,第一电池组121、第二电池组122、第三电池组123及第四电池组124串并联连接(即串-并联连接或并-串联连接),此时电池包100输出的第二工作电压为“2n”V;当端子组件142与第三连接组件146电性连接时,第一电池组121、第二电池组122、第三电池组123及第四电池组124相互串联,此时电池包100输出的第三工作电压为“4n”V。
如图2至图8所示,第一连接组件144包括第一正极连接片1441和第一负极连接片1442,第一正极连接片1441具有四个正极引脚,分别与第一电池组121、第二电池组122、第三电池组123及第四电池组124的正极相连;第一负极连接片1442具有四个负极引脚,分别与第一电池组121、第二电池组122、第三电池组123及第四电池组124的负极相连。如此设计,第一电池组121、第二电池组122、第三电池组123及第四电池组124相互之间并联连接,此时第一工作电压“n”V等于各个电池组的额定输出电压。
如图2至图8所示,第二连接组件145包括将第一电池组121的第一正极与第二电池组122的第二正极相连的第二正极连接片1451,分别与第三电池组123的第三正极、第四电池组124的第四正极、第一电池组121的第一负极及第二电池组122的第二负极相连的第四连接片1452,以及将第三电池组123的第三负极与第四电池组124的第四负极相连的第二负极连接片1453。如此设计,可形成第一电池组121与第二电池组122并联、第三电池组123与第四电池组124并联,之后再串联的连接方式(即并-串联连接),此时第二工作电压“2n”V等于两个电池组的额定输出电压之和。
如图2至图8所示,第三连接组件146包括将第二电池组122的第二正极与第一电池组121的第一负极相连的第一连接片1461、将第三电池组123的第三正极与第二电池组122的 第二负极相连的第二连接片1462及将第四电池组124的第四正极与第三电池组123的第三负极相连的第三连接片1463,以此来实现第一电池组121、第二电池组122、第三电池组123及第四电池组124的串联连接,此时第三工作电压“4n”V等于四个电池组的额定输出电压之和。
如图3至图8所示,内部插片座143包括基体1431和与基体1431相抵接的弹簧结构1432,第一连接组件144、第二连接组件145及第三连接组件146与基体1431一体成型。基体1431设有肋条1433和位于肋条1433两侧的滑槽1434,第一连接组件144、第二连接组件145及第三连接组件146成型并暴露在肋条1433上,第二正极端子1424和第二负极端子1426中每个端子的两个接触片1427均收容于滑槽1434并夹持肋条1433,从而在内部插片座143滑动时,可保证第二正极端子1424和第二负极端子1426始终在滑槽1434内滑动并保持与肋条1433夹持抵接的状态。
如图3至图6及图9所示,基体1431设有向外延伸的收容部1435,电极插片座141的内侧壁上设置有定位柱1412,弹簧结构1432的一端套设于定位柱1412外周、另一端抵接于收容部1435内壁。当内部插片座143滑动时,弹簧结构1432被压缩或释放,以便端子组件142在第一连接组件144、第二连接组件145及第三连接组件146之间切换性连接。
如图4至图9所示,基体1431还设有朝向电极插片座141一侧突伸的滑轨1436,电极插片座141上对应开设有通槽1413,滑轨1436收容于通槽1413,以便引导内部插片座143在电极插片座141内沿通槽1413滑动。滑轨1436和通槽1413的数量及设置位置可根据实际情况而定,此处不作限制。基体1431的远离收容部1435的一侧向外突伸形成有推动部1437,滑轨1436设置在推动部1437上。推动部1437可用于推动内部插片座143滑动,第三连接组件146相较第二连接组件145更靠近推动部1437,第一连接组件144相较第二连接组件145更远离推动部1437。
如图2至图9所示,切换组件140还包括用于进一步推动内部插片座143滑动的推杆,第三连接组件146相较第二连接组件145更靠近推杆,第一连接组件144相较第二连接组件145更远离推杆。推杆可以设置成与基体1431一体成型,也可以设置成与外部插片座150一体成型,以便在插入外部插片座150时,可利用推杆来迫使内部插片座143滑动,继而使端子组件142与第一连接组件144或第二连接组件145或第三连接组件146电性连接。
如图2至图9以及图10至图22所示,当推杆形成于外部插片座150上时,外部插片座150可以根据推杆的长度不同设置为三种单独的外部插片座,也可以将不同长度的推杆设置在一个外部插片座上,通过切换不同长度的推杆来实现不同的配置。为了方便描述,定义电动工具系统包括第一电动工具、第二电动工具及第三电动工具,第一电动工具设置有第一工具界面,能够在第一工作电压下运行;第二电动工具设置有第二工具界面,能够在第二工作电压下运行;第三电动工具设置有第三工具界面,能够在第三工作电压下运行。在本实施例中,第一工具界面包括第一插头,第一插头例如为第一外部插片座151,第二工具界面包括第二插头,第二插头例如为第二外部插片座152,第三工具界面包括第三插头,第三插头例如为第三外部插片座153。且第一外部插片座151、第二外部插片座152和第三外部插片座 153上设有触发装置,所述触发装置用于切换组件进行配合,以使切换组件在不同状态之间转换。以下将利用这三种单独的外部插片座来详细描述本发明电动工具系统的使用原理。
如图2、图10以及图19与图23所示,外部插片座150包括第一外部插片座151、第二外部插片座152及第三外部插片座153,且第一外部插片座151上推杆的长度小于第二外部插片座152上推杆147的长度,同时第二外部插片座152上推杆147的长度小于第三外部插片座153上推杆147'的长度。
如图8与图10所示,第一外部插片座151包括本体部1511和插接在本体部1511上的公端子1512,本体部1511上推杆的长度为零。公端子1512包括正极公端子1513和负极公端子1514,正极公端子1513用于与第一正极端子1423对接,负极公端子1514用于与第一负极端子1425对接,以此来实现电池包端子组件142与第一外部插片座151公端子1512的电性导通,实现电流与电压的传输。
如图3、图11至图13所示,当插入第一外部插片座151时,正极公端子1513与第一正极端子1423对接、负极公端子1514与第一负极端子1425对接,内部插片座143处于第一位置(即位于电极插片座141的底部位置处),此时端子组件142与第一连接组件144电性连接,第一电池组121、第二电池组122、第三电池组123及第四电池组124相互并联连接。此时电池包输出的第一工作电压等于各个电池组的额定输出电压,即U=u1=u2=u3=u4=“n”V=18V。
如图3、图8与图14所示,第二外部插片座152包括本体部1521和插接在本体部1521上的公端子1522,公端子1522包括正极公端子1523和负极公端子1524,正极公端子1523用于与第一正极端子1423对接,负极公端子1524用于与第一负极端子1425对接,以此来实现电池包端子组件142与第二外部插片座152公端子1522的电性导通,实现电流与电压的传输。与图10所示的第一外部插片座151不同的是:第二外部插片座152的本体部1521上设有推杆147。
如图3、图15至图17所示,当插入第二外部插片座152时,推杆147会推动内部插片座143上的推动部1437,迫使内部插片座143向上滑动,弹簧结构1432被压缩,直至正极公端子1523与第一正极端子1423对接、负极公端子1524与第一负极端子1425对接,此时内部插片座143滑动至第二位置(即电极插片座141的中间位置处)、端子组件142与第二连接组件145电性连接,实现了第一电池组121与第二电池组122并联、第三电池组123与第四电池组124并联,之后再相互串联的连接方式(即并-串联连接)。此时电池包输出的第二工作电压等于两个电池组的额定输出电压之和,即U=u1+u2=u3+u4=“2n”V=36V。
如图15至图18所示,为第二连接组件145的另一种实施方式。在本实施方式中,第二连接组件145'包括将第一电池组121的第一正极与第二电池组122的第二正极相连的第二正极连接片1451'、将第三电池组123的第三正极与第二电池组122的负第二极相连的第五连接片1452'、将第四电池组124的第四正极与第一电池组121的第一负极相连的第六连接片1453'、以及将第三电池组123的第三负极与第四电池组124的第四负极相连的第二负极连接片1454'。如此设计,可形成第一电池组121与第四电池组124串联、第二电池组122与第三电 池组123串联,之后再并联的连接方式(即串-并联连接)。
如图3、图19至图21所示,当插入图14所示的第二外部插片座152时,推杆147会推动内部插片座143上的推动部1437,迫使内部插片座143向上滑动,弹簧结构1432被压缩,直至正极公端子1523与第一正极端子1423对接、负极公端子1524与第一负极端子1425对接,此时内部插片座143滑动至第二位置(即电极插片座141的中间位置处)、端子组件142与第二连接组件145'电性连接,实现了第一电池组121与第四电池组124串联、第二电池组122与第三电池组123串联,之后再并联的连接方式。此时电池包输出的第二工作电压也等于两个电池组的额定输出电压之和,即U=u1+u4=u2+u3=“2n”V=36V。
如图3、图8以及图22所示,第三外部插片座153包括本体部1531和插接在本体部1531上的公端子1532,公端子1532包括正极公端子1533和负极公端子1534,正极公端子1533用于与第一正极端子1423对接,负极公端子1534用于与第一负极端子1425对接,以此来实现电池包端子组件142与第三外部插片座153公端子1532的电性导通,实现电流与电压的传输。与图14所示的第二外部插片座152不同的是:第三外部插片座153的本体部1531上也设有推杆147',且推杆147'的长度大于推杆147的长度。
如图2至图3、图23至图25所示,当插入第三外部插片座153时,推杆147'会推动内部插片座143上的推动部1437,迫使内部插片座143向上滑动,弹簧结构1432被压缩,直至正极公端子1533与第一正极端子1423对接、负极公端子1534与第一负极端子1425对接,此时内部插片座143滑动至第三位置(即电极插片座141的最顶部位置处)、端子组件142与第三连接组件146电性连接,实现了第一电池组121、第二电池组122、第三电池组123及第四电池组124的串联连接。此时电池包输出的第三工作电压等于四个电池组的额定输出电压之和,即U=u1+u2+u3+u4=“4n”V=72V。选用不同的外部插片座150后,可以实现电池包不同电压的输出,以此来满足三种不同电动工具的电压需求,而且三种电压之间的切换快速、便捷。
如图1至图3所示,本发明的电池包100还可应用于一种充电系统(未图示),该充电系统包括前述电池包100和给电池包100充电的充电器。充电器设有充电界面,当充电器与电池包100对接进行充电时,充电界面与电池界面配合,具体的,内部插片座143处于第一位置,此时,第一电池组121、第二电池组122、第三电池组123及第四电池组124相互并联,充电器输出的充电电压等于单个电池组的额定输出电压,为低电压,保护了电池包不受高电流、高电压的冲击。
如图1至图25所示,本实施例的电池包100通过在内部插片座143的不同位置处设置第一连接组件144、第二连接组件145、145'及第三连接组件146,从而当内部插片座143滑动至第一位置或第二位置或第三位置时,可利用端子组件142与第一连接组件144或第二连接组件145、145'或第三连接组件146的选择性连接,实现电池包100内电池组的串并联状态切换,继而实现电池包输出电压的变化,提高了具有该电池包的电动工具系统的适配性。
如图26与图27所示,本发明揭示了一种电池包200,包括壳体210和收容在壳体210内的电池组220、电路板230以及与电池组220电性连接的切换组件240和端子组件250。电 池组220包括若干电池组,端子组件250与电池组电性连接。本发明中,端子组件250优选为母端子组件,但不应以此为限。本发明的电池包200使用于一电动工具系统上,该电动工具系统还包括可插入电池包200以与电池包200的切换组件240对接的外部插片座(未图示)。
如图26与图27所示,电池组220至少包括第一电池组221、第二电池组222、第三电池组223及第四电池组224;每个电池组内均设有多个电芯,该多个电芯可以相互串联,也可以相互并联,此处不作过多的描述。假定每个电池组的额定输出电压为“n”V,即第一电池组221的额定输出电压u1=第二电池组222的额定输出电压u2=第三电池组223的额定输出电压u3=第四电池组224的额定输出电压u4=“n”V。
如图27与图29所示,壳体210上设置有电池界面,以与电动工具配合,且电池界面上设置有输出端子槽,以收容输出端子。具体的,壳体210包括相互组装的上壳体211和下壳体212以及形成在上壳体211与下壳体212之间的收容空间213,电池组220、电路板230、切换组件240及端子组件250均收容在收容空间213内。上壳体211的顶壁上设有滑槽2111和位于滑槽2111两侧的限位块2112,滑槽2111呈矩形状设置,滑槽2111的两侧分别设有两个限位块2112,该两个限位块2112相互间隔,以在两个限位块2112之间形成限位空间2113。
如图28与图29所示,定义位于滑槽2111两侧的限位块2112为第一限位块21121、第二限位块21122、第三限位块21123及第四限位块21124,其中第一限位块21121与第二限位块21122相邻且对称设置,第三限位块21123与第四限位块21124相邻且对称设置,第一限位块21121与第三限位块21123相对于滑槽2111对称设置,第二限位块21122与第四限位块21124相对于滑槽2111对称设置。限位空间2113形成在第一限位块21121与第二限位块21122之间以及第三限位块21123与第四限位块21124之间。
如图28与图29所示,在本发明中,每个限位块2112均呈弹片状设置,以便在特定情况下能够发生弹性形变和弹性复位;每个限位块2112的朝向滑槽2111一侧均形成有圆弧状的外壁面2114,该圆弧状的外壁面2114可在特定情况下起到导向的作用;但不应以此为限。
如图27至28所示,上壳体211上还开设有供外部插片座插入的插孔2115,插孔2115设置有两个,分别对应电池包200的正极输出和负极输出。
如图27、图30与图31所示,端子组件250通过电路板230与四个电池组的电极电性连接。具体来讲,端子组件250包括固定座251和插接固定在固定座251内的固定端子252,固定端子252包括在一条直线上呈左右排布的第一固定端子2521和第二固定端子2522,其中,第一固定端子2521为正极端子,用于与对应电池组的正极电性连接;第二固定端子2522为负极端子,用于与对应电池组的负极电性连接。对应地,第一固定端子2521和第二固定端子2522均设置有4个,且从左往右以++++----的方式排列,以分别与四个电池组连接。
如图27、图30与图31所示,固定座251上开设有供收容固定端子252的收容槽2511,每个固定端子252均具有第一插接部2523和第二插接部2524以及连接第一插接部2523与第二插接部2524的连接部2525,连接部2525组装固定在收容槽2511内。第一插接部2523与第二插接部2524相互垂直,且第一插接部2523在水平方向上自收容槽2511突伸超出固定座251的前端,以与切换组件240电性连接;第二插接部2524在竖直方向上自收容槽2511突 伸超出固定座251的底部,以便第二插接部2524在竖直方向上与电路板230插接固定并电性连接,继而实现第二插接部2524与四个电池组的正负极的电性连接。
如图27、图32至图35所示,切换组件240具有第一状态,第二状态,第三状态,当切换组件240处于第一状态时,电池包200输出第一工作电压,当切换组件240处于第二状态时,电池包200输出第二工作电压,当切换组件240处于第三状态时,电池包200输出第三工作电压。在本实施例中,切换组件240包括与电池组220电性连接的连接组件241和与连接组件241电性连接的滑动组件242,滑动组件242相对于连接组件241滑动设置,且当滑动组件242位于第一位置时,第一电池组221、第二电池组222、第三电池组223及第四电池组224相互并联,电池包200输出第一工作电压;当滑动组件242滑动至第二位置时,第一电池组221、第二电池组222、第三电池组223及第四电池组224之间串并联组合,电池包200输出第二工作电压;当滑动组件242滑动至第三位置时,第一电池组221、第二电池组222、第三电池组223及第四电池组224相互串联,电池包200输出第三工作电压。第三工作电压大于第二工作电压,第二工作电压大于第一工作电压。
如图27以及图32至图35所示,连接组件241与端子组件250电性连接,并包括连接本体2410和形成在连接本体2410上的连接端子2411,连接本体2410内凹设有收容腔24101,连接端子2411的一端收容并暴露于收容腔24101、另一端位于连接本体2410外部。滑动组件242收容于收容腔24101并在收容腔24101内与连接端子2411电连接。连接端子2411包括第一正极端子2412和第一负极端子2413,第一正极端子2412设置有4个,以分别与第一电池组221、第二电池组222、第三电池组223及第四电池组224的正极电性连接,第一负极端子2413也设置有4个,以分别与第一电池组221、第二电池组222、第三电池组223及第四电池组224的负极电性连接。
如图32至图35所示,在本实施例中,连接端子2411可拆卸的组装固定在连接本体2410上。因连接端子2411在经过多次滑动摩擦后容易发生磨损,继而导致连接端子2411与滑动组件242之间的电连接稳定性较差,故将连接端子2411设计成可拆卸,可以在连接端子2411发生磨损后直接更换连接端子2411,无需更换整个连接组件241,降低了成本。
如图27、图32至图35所示,需要注意的是:本发明中,连接组件241与四个电池组不直接连接,而是通过端子组件250的电流传递来实现连接组件241与四个电池组的间接连接。具体地,连接组件241的第一正极端子2412与图30中端子组件250的第一固定端子2521相互对接、连接组件241的第一负极端子2413与端子组件250的第二固定端子2522相互对接。
如图31至图35所示,本发明中,第一正极端子2412和第一负极端子2413呈连接片状设置,以便于与连接本体2410组装固定且一端暴露在收容腔24101内,此外,第一正极端子2412和第一负极端子2413的另一端也便于插接到第一固定端子2521和第二固定端子2522的第一插接部2523内,实现连接端子2411与固定端子252的电性连接;当然,不应以此为限。
如图31至图33所示,连接本体2410的底部内侧壁上开设有8个开孔24102,该8个开孔24102分别与4个第一正极端子2412和4个第一负极端子2413相对应,以便4个第一正 极端子2412和4个第一负极端子2413的一端收容并暴露于对应的开孔24102。第一正极端子2412和第一负极端子2413均包括接触部2416、自接触部2416向后延伸的安装部2417以及自安装部2417继续向后延伸的对接部2418,接触部2416的厚度大于安装部2417的厚度,以便在连接本体2410与连接端子2411组装完成后,第一正极端子2412和第一负极端子2413的接触部2416突伸并收容于开孔24102,从而滑动组件242直接与开孔24102内的接触部2416进行电连接。安装部2417组装固定在连接本体2410内,对接部2418用于与端子组件250的第一固定端子2521和第二固定端子2522的第一插接部2523对接,以实现端子组件250与切换组件240的电性连接。
如图27、图33所示,连接端子2411还包括位于连接本体2410外部的第二正极端子2414和第二负极端子2415,第二正极端子2414形成在对应于第一电池组221正极的那个第一正极端子2412上,以作为一个总正输出端子与外部插片座进行对接;第二负极端子2415形成在对应于第四电池组224负极的那个第一负极端子2413上,以作为一个总负输出端子与外部插片座进行对接,以此来实现电池包200内电压的输出。第二正极端子2414和第二负极端子2415均靠近插孔2115处设置,以便与外部插片座进行对接。
如图32至图34所示,滑动组件242包括滑动本体2421和形成在滑动本体2421上且相互间隔设置的第三接触端子243、第二接触端子244及第一接触端子245,第三接触端子243、第二接触端子244及第一接触端子245用于与连接端子2411的接触部2416电性连接,且当滑动组件242位于第一位置时,连接端子2411的接触部2416仅与第一接触端子245电性连接,当滑动组件242滑动至第二位置时,连接端子2411的接触部2416仅与第二接触端子244电性连接,当滑动组件242滑动至第三位置时,连接端子2411的接触部2416仅与第三接触端子243电性连接。
如图27以及图32至图35所示,第一接触端子245、第二接触端子244及第三接触端子243沿滑动组件242的滑动方向(上下方向)间隔设置,当连接端子2411的接触部2416与第一接触端子245电性连接时,第一电池组221、第二电池组222、第三电池组223及第四电池组224相互并联,此时电池包200输出的第一工作电压为“n”V;当连接端子2411的接触部2416与第三接触端子243电性连接时,第一电池组221、第二电池组222、第三电池组223及第四电池组224相互串联,此时电池包200输出的第三工作电压为“4n”V;当连接端子2411的接触部2416与第二接触端子244电性连接时,第一电池组221、第二电池组222、第三电池组223及第四电池组224并-串联连接,此时电池包200输出的第二工作电压为“2n”V。
如图27以及图32至图35所示,第一接触端子245包括第二正极连接片2451和第二负极连接片2452,第二正极连接片2451分别与第一电池组221、第二电池组222、第三电池组223及第四电池组224的正极相连,第二负极连接片2452分别与第一电池组221、第二电池组222、第三电池组223及第四电池组224的负极相连。如此设计,第一电池组221、第二电池组222、第三电池组223及第四电池组224相互之间并联连接,此时第一工作电压“n”V等于各个电池组的额定输出电压。
如图27以及图32至图35所示,第二接触端子244包括将第一电池组221的第一正极与 第二电池组222的第二正极相连的第一正极连接片2441,分别与第三电池组223的第三正极、第四电池组224的第四正极、第一电池组221的第一负极及第二电池组222的第二负极相连的第四连接片2442,以及将第三电池组223的第三负极与第四电池组224的第四负极相连的第一负极连接片2443。如此设计,可形成第一电池组221与第二电池组222并联、第三电池组223与第四电池组224并联,之后再串联的连接方式(即并-串联连接),此时第二工作电压“2n”V等于两个电池组的额定输出电压之和。
如图27以及图32至图35所示,具体来讲,第三接触端子243包括将第二电池组222的第二正极与第一电池组221的第一负极相连的第一连接片2431、将第三电池组223的第三正极与第二电池组222的第二负极相连的第二连接件2432以及将第四电池组224的第四正极与第三电池组223的第三负极相连的第三连接件2433,以此来实现第一电池组221、第二电池组222、第三电池组223及第四电池组224的串联连接,此时第三工作电压“4n”V等于四个电池组的额定输出电压之和。
如图32至图35所示,滑动本体2421包括相互平行且间隔设置的第一本体2422、第二本体2423和第三本体2424以及在其宽度方向上连接第一本体2422、第二本体2423和第三本体2424的连接柱2425,第三接触端子243形成并暴露于第一本体2422,第二接触端子244形成并暴露于第二本体2423,第一接触端子245形成并暴露于第三本体2424。连接柱2425设置有两个,两个弹性件246分别套设在对应的连接柱2425上,用于在滑动组件242滑动完成后,带动滑动组件242复位。
如图28、图32至图35所示,滑动本体2421还包括垂直于第二本体2423设置的滑动杆2426和位于滑动杆2426末端的滑动部2427,滑动杆2426突伸超出上壳体211的外表面并限位收容在滑槽2111内,以使得滑动部2427暴露在上壳体211外,滑动部2427用于推动滑动本体2421沿滑槽2111滑动,继而在第一位置、第二位置及第三位置之间切换。弹性件246的一端固定于第一本体2422、另一端与连接本体2410的收容腔24101内壁面接触并固定(即相互抵接),从而当滑动组件242滑动时,弹性件246被弹性压缩或释放,以便连接端子2411的接触部2416在第三接触端子243、第二接触端子244及第一接触端子245之间切换性连接。
如图28、图32至图35,并结合图29所示,上壳体211上的四个限位块2112用于将滑动部2427限位固定在第一位置或第二位置或第三位置。具体来讲,滑动部2427包括沿滑槽2111滑动的基部24271和自基部24271两侧向外突伸的限位部24272,以使得滑动部2427大致呈十字形;当滑动部2427位于第一位置时,限位部24272的外壁面与第一限位块21121和第三限位块21123的外壁面2114相互抵接;当滑动部2427位于第二位置时,限位部24272收容在限位空间2113内;当滑动部2427位于第三位置时,限位部24272的外壁面与第二限位块21122和第四限位块21124的外壁面2114相互抵接;如此,可实现滑动部2427在相应位置处的固定。
为了方便描述,定义电动工具系统包括第一电动工具(未图示)、第二电动工具(未图示)及第三电动工具(未图示),第一电动工具设置有第一工具界面,且第一工具界面具有第一配置的第一插头,能够在第一工作电压下运行;第二电动工具设置有第二工具界面,且 第二工具界面具有第二配置的第二插头。能够在第二工作电压下运行;第三电动工具设置有第三工具界面,且第三工具界面具有第三配置的第三插头,能够在第三工作电压下运行;且每个插头上设置触发装置,用于切换组件进行配合,以使切换组件在不同状态之间转换。在本实施例中,第一插头例如为第一外部插片座,第二插头例如为第二插片座,第三插头例如为第三插片座,以下将以这三种外部插片座为例,对本发明电池包的电压切换原理进行详细说明。定义每个电池组均包括5节串联而成的电芯,每个电池组的电压为20V。
如图32至图35、图42至图44所示,当电池包200与第一电动工具的第一外部插片座连接时,滑动组件242向上滑动至第一位置,此时两个弹性件246被压缩、滑动部2427的基部24271位于滑槽2111的最顶端、两个限位部24272的下侧面分别与对应的第一限位块21121和第三限位块21123的外壁面2114相抵接,连接端子2411的接触部2416与第一接触端子245电性连接,实现了第一电池组221、第二电池组222、第三电池组223及第四电池组224的并联连接。此时电池包200输出的第一工作电压等于各个电池组的额定输出电压,即U=u1=u2=u3=u4=20V。选用不同的外部插片座后,可以实现电池包200不同电压的输出,以此来满足三种不同电动工具的电压需求,而且三种电压之间的切换快速、便捷。
如图32至图35、图39至图41所示,当电池包200与第二电动工具的第二外部插片座连接时,滑动组件242向上滑动至第二位置,此时两个弹性件246被压缩、滑动部2427的基部24271位于滑槽2111的中间位置处、两个限位部24272均限位收容在限位空间2113内,连接端子2411的接触部2416与第二接触端子244电性连接,实现了第一电池组221与第二电池组222并联、第三电池组223与第四电池组224并联,之后再相互串联的连接方式(即并-串联连接)。此时电池包200输出的第二工作电压等于两个电池组的额定输出电压之和,即U=u1+u2=u3+u4=40V。
如图32至图38所示,当电池包200与第三电动工具的第三外部插片座连接时,滑动组件242位于第三位置,此时两个弹性件246均处于初始状态,滑动部2427的基部24271位于滑槽2111的最底端、两个限位部24272的上侧面分别与对应的第二限位块21122和第四限位块21124的外壁面2114相抵接,连接端子2411的接触部2416与第三接触端子243电性连接,第一电池组221、第二电池组222、第三电池组223及第四电池组224相互串联连接。此时电池包200输出的第三工作电压等于四个电池组的额定输出电压之和,即U=u1+u2+u3+u4=80V。
如图28、图36至图44所示,本实施例中,滑动部2427的滑动是通过手动调节的,调节时,直接将滑动部2427朝向第一位置或第二位置或第三位置推拉,使得弹性件246被压缩或释放,对应的限位块2112发生弹性形变,为滑动部2427的移动提供方便。待滑动部2427到达目标位置后,限位块2112自动复位,进一步起到对滑动部2427进行限位的作用。
如图32、图36至图44所示,在其他实施例中,滑动部2427的滑动也可设计成非手动式推拉,这时就需要对连接本体2410和外部插片座进行相应的设计,以实现“在插入外部插片座时,外部插片座同步推动滑动部2427进行滑动”的效果,此处不做详细描述。
如图26至图44所示,本发明的电池包200还可应用于一种充电系统(未图示),该充电系统包括前述电池包200和给电池包200充电的充电器。充电器上设置有充电界面,以与 电池包200的电池界面配合。当充电器与电池包200对接进行充电时,滑动组件242滑动到第一位置,此时第一电池组221、第二电池组222、第三电池组223及第四电池组224相互并联,充电器输出的充电电压等于单个电池组的额定输出电压,属于低电压。当然,在充电时,滑动组件242也可以位于第三位置,此时,第一电池组221、第二电池组222、第三电池组223及第四电池组224相互串联,充电器输出的充电电压等于四个电池组的额定输出电压之和。
如图26至图44所示,本实施例的电池包200通过在滑动本体2421的不同位置处设置第一接触端子245、第二接触端子244及第三接触端子243,从而当滑动组件242在第一位置、第二位置及第三位置之间进行滑动切换时,可利用连接端子2411与第一接触端子245或第二接触端子244或第三接触端子243的选择性电连接,来实现电池包200内电池组的串并联状态切换,继而实现电池包200输出电压的变化,提高了具有该电池包200的电动工具系统的适配性。
如图45与图46所示,本发明揭示了一种电池包300,包括壳体310和收容在壳体310内的电池组320、电路板330、与电池组320电性连接的端子组件350以及与端子组件350电性连接的切换组件340。壳体110上设置有电池界面,以与电动工具配合,且电池界面上设置有输出端子槽,以收容输出端子。电池组320包括若干电池组,端子组件350通过电路板330与电池组电性连接。本发明的电池包300使用于一电动工具系统上,该电动工具系统还包括可插入电池包300以与电池包300的切换组件340对接的插接组件360。
如图47与图48并结合图46所示,电池组320至少包括第一电池组、第二电池组、第三电池组及第四电池组,每个电池组内均设有多个电芯,该多个电芯可以相互串联,也可以相互并联,此处不作过多的描述。在本实施例中,每个电池组例如包括6节电芯。假定每个电池组的额定输出电压为“n”V,即第一电池组的额定输出电压u1=第二电池组的额定输出电压u2=第三电池组的额定输出电压u3=第四电池组的额定输出电压u4=“n”V。
如图46至图48所示,端子组件350包括相互对称设置的正极端子351和负极端子352,具体来讲,正极端子351包括与第一电池组的第一正极相连的第一正极端子3511、与第二电池组的第二正极相连的第二正极端子3512、与第三电池组的第三正极相连的第三正极端子3513以及与第四电池组的第四正极相连的第四正极端子3514;负极端子352包括与第一电池组的第一负极相连的第一负极端子3521、与第二电池组的第二负极相连的第二负极端子3522、与第三电池组的第三负极相连的第三负极端子3523以及与第四电池组的第四负极相连的第四负极端子3524。
如图46至图48所示,本实施例中,第一正极端子3511与第三负极端子3523相互左右对称、第二正极端子3512与第一负极端子3521相互左右对称、第三正极端子3513与第四负极端子3524相互左右对称、第四正极端子3514与第二负极端子3522相互左右对称。当然,在其他实施例中,也可对正极端子351和负极端子352的排布进行其它设计,以达到与本实施例相同的技术效果,此处不作限制。
如图46至图48所示,切换组件340具有第一状态,第二状态,第三状态,当切换组件 340处于第一状态时,电池包300输出第一工作电压,当切换组件340处于第二状态时,电池包300输出第二工作电压,当切换组件340处于第三状态时,电池包300输出第三工作电压。在本实施例中,切换组件340包括左右对称设置的第一部分341和第二部分342,第一部分341与第二部分342能够相对移动,以便在切换组件340位于第一位置(即处于初始状态)时,第一电池组、第二电池组、第三电池组及第四电池组相互并联,电池包300输出第一工作电压;当第一部分341与第二部分342相对移动第一距离时,切换组件340位于第二位置,第一电池组、第二电池组、第三电池组及第四电池组之间串并联组合(即包括串-并联连接或并-串联连接),电池包300输出第二工作电压;当第一部分341与第二部分342相对移动第二距离时,切换组件340位于第三位置,第一电池组、第二电池组、第三电池组及第四电池组相互串联,电池包300输出第三工作电压。第二距离大于第一距离。第一工作电压小于第二工作电压,第二工作电压小于第三工作电压。
如图46至图48所示,需要说明的是:在第一部分341与第二部分342相对移动之后,第一部分341与第二部分342可以发生形变,也可以不发生形变,只要能够实现第一工作电压、第二工作电压或第三工作电压的输出即可。
如图46至图50所示,第一部分341包括第一本体3411和注塑成型在第一本体3411上的第一嵌件3412,第二部分342包括第二本体3421和注塑成型在第二本体3421上的第二嵌件3422,第一本体3411和第二本体3421相互对称设置、第一嵌件3412和第二嵌件3422也相互对称设置。第一嵌件3412和第二嵌件3422分别与端子组件350电性连接,以间接与各个电池组电性连接。切换组件340还包括位于第一本体3411与第二本体3421之间的弹性件3410,当第一部分341与第二部分342相对移动第一距离或第二距离时,第一本体3411和第二本体3421相对移动、弹性件3410被压缩。弹性件3410为压簧,且该压簧的一端卡设于第一本体3411、另一端卡设于第二本体3421,以避免压簧在不经意间脱离第一本体3411和第二本体3421。因第一本体3411和第二本体3421结构相同且对称设置,故以下将以第一本体3411为例,对其结构进行详细描述。
如图46至图47所示,第一本体3411(第二本体3421)包括相互平行设置的第一立柱3413、第二立柱3414及第三立柱3415以及形成于第一立柱3413与第二立柱3414之间的第一插槽3416和形成于第二立柱3414与第三立柱3415之间的第二插槽3417,弹性件3410与两个第一立柱3413连接固定,第二立柱3414的朝向第二插槽3417一侧设有倾斜延伸的第一导引面3418,第三立柱3415上也设有倾斜延伸的第二导引面3419,只是第一导引面3418的倾斜角度(即与水平面之间的夹角)大于第二导引面3419的倾斜角度。第一正极端子3511的一端及第三负极端子3523的一端均延伸至对应第二导引面3419的下方。
如图46至图50所示,第一嵌件3412部分暴露于第一本体3411的第一插槽3416和第二插槽3417,第二嵌件3422部分暴露于第二本体3421的第一插槽3416和第二插槽3417。第一嵌件3412形成于第一本体3411,用于与电池组320中每个电池组的正极相连,第二嵌件3422形成于第二本体3421,用于与电池组320中每个电池组的负极相连。初始状态下,第一嵌件3412与第二嵌件3422之间留有间距。
请参图46至图48,第一正极端子3511、第二正极端子3512、第三正极端子3513、第四正极端子3514、第一负极端子3521、第二负极端子3522、第三负极端子3523及第四负极端子3524上均设有凸包353,该凸包353用来与第一嵌件3412和第二嵌件3422电接触,实现端子组件350与切换组件340的电性连接。
请图47至图50,第一嵌件3412包括同时与第一正极端子3511和第四正极端子3514相连的第一连接片3423、与第二正极端子3512相连的第二连接片3424以及与第三正极端子3513相连的第三连接片3425;第二嵌件3422包括同时与第二负极端子3522和第三负极端子3523相连的第四连接片3423'、与第一负极端子3521相连的第五连接片3424'以及与第四负极端子3524相连的第六连接片3425';第一连接片3423与第四连接片3423'对称设置,第二连接片3424与第五连接片3424'对称设置,第三连接片3425与第六连接片3425'对称设置。以下将主要以第一连接片3423、第二连接片3424及第三连接片3425为例,对每个连接片的具体结构进行详细说明。
如图47至48所示,第一连接片3423(第四连接片3423')包括依次排布的第一接触部34231、第二接触部34232及第三接触部34233,第一接触部34231与第二接触部34232相互对称,第二接触部34232与第三接触部34233相互平行;第二连接片3424(第五连接片3424')包括第四接触部34241和第五接触部34242,第四接触部34241与第二接触部34232相互平行(或平齐),第五接触部34242朝远离第四接触部34241的方向倾斜设置;第三连接片3425(第六连接片3425')包括第六接触部34251和第七接触部34252,第六接触部34251与第四接触部34241相互平行且与第四接触部34241和第二接触部34232前后对齐,第七接触部34252与第五接触部34242相互平行且与第五接触部34242前后对齐。
如图47至48所示,较佳地,每个接触部上均设有突出的突出部3426;第一接触部34231、第五接触部34242及第七接触部34252均位于第一本体3411和第二本体3421之间、弹性件3410的下方,且第五接触部34242和第七接触部34252均具有弹性形变的能力;第二接触部34232、第四接触部34241及第六接触部34251上的突出部3426均收容并突出暴露于第一插槽3416,第三接触部34233上的突出部3426收容并突出暴露于第二插槽3417。
如图46至图60所示,插接组件360包括第一插接组件361、第二插接组件362及第三插接组件363,且当电池包与第一插接组件361连接时,切换组件340位于第一位置(即处于初始状态),电池包300输出第一工作电压;当电池包与第二插接组件362连接时,第一部分341与第二部分342相对移动第一距离,切换组件340位于第二位置,电池包300输出第二工作电压;当电池包与第三插接组件363连接时,第一部分341与第二部分342相对移动第二距离,切换组件340位于第三位置,电池包300输出第三工作电压。
为了方便描述,定义电动工具系统包括第一电动工具、第二电动工具及第三电动工具,第一电动工具能够在第一工作电压下运行,第一工具界面设置在第一电动工具上;第二电动工具能够在第二工作电压下运行,第二工具界面设置在第二电动工具上;第三电动工具能够在第三工作电压下运行,第三工具界面设置在第三电动工具上。本发明中,第一工具界面包括第一插头,第一插头例如为第一插接组件361,第二工具界面包括第二插头,第二连接件 例如为第二插接组件362,第三工具界面包括第三插头,第三插头例如为第三插接组件363,且第一插接组件361、第二插接组件362及第三插接组件363优选为公插件,切换组件340优选为母插件,但不应以此为限。以下将以这三种插接组件为例,对本发明电池包的电压切换原理进行详细说明。
如图46至图52所示,第一插接组件361包括本体部3611和形成在本体部3611上的公端子3612,公端子3612包括正极公端子3613和负极公端子3614,正极公端子3613用于与第一嵌件3412对接,负极公端子3614用于与第二嵌件3422对接,以此来实现电池包300的端子组件350与第一插接组件361公端子3612的电性导通,实现电流与电压的传输。
如图47至图52所示,当插入第一插接组件361时,在外部推力的作用下,正极公端子3613逐渐滑入第一本体3411的第一插槽3416内、负极公端子3614对应滑入第二本体3421的第一插槽3416内,此时,切换组件340位于第一位置(即处于初始状态),第一嵌件3412与第二嵌件3422之间留有间距。
如图46至图52所示,当第一插接组件361插入后,第一连接片3423的第二接触部34232、第二连接片3424的第四接触部34241及第三连接片3425的第六接触部34251同时与正极公端子3613电性接触,对应的,第四连接片3423'的第二接触部34232、第五连接片3424'的第四接触部34241及第六连接片3425'的第六接触部34251也同时与负极公端子3614电性接触,此时,第一电池组、第二电池组、第三电池组及第四电池组相互并联,电池包300输出的第一工作电压为“n”V。此时电池包300输出的第一工作电压等于各个电池组的额定输出电压,以单个电池组的额定输出电压是24V为例,则第一工作电压U=u1=u2=u3=u4=24V。
如图53至图56并结合图46与图48所示,第二插接组件362包括本体部3621和形成在本体部3621上的公端子3622,公端子3622包括正极公端子3623和负极公端子3624,正极公端子3623用于与第一嵌件3412对接,负极公端子3624用于与第二嵌件3422对接,以此来实现电池包300端子组件350与第二插接组件362公端子3622的电性导通,实现电流与电压的传输。与图49所示的第一插接组件361不同的是:第二插接组件362的正极公端子3623与负极公端子3624之间的距离大于第一插接组件361的正极公端子3613与负极公端子3614之间的距离。
如图53至图56并结合图46与图48所示,当插入第二插接组件362时,在外部推力的作用下,正极公端子3623在第一导引面3418的导引作用下逐渐滑入第一本体3411的第二插槽3417内、负极公端子3624同样对应滑入第二本体3421的第二插槽3417内,此时,因第一本体3411的第二插槽3417与第二本体3421的第二插槽3417之间的距离大于第二插接组件362的正极公端子3623与负极公端子3624之间的距离,故在插入第二插接组件362的过程中,会推动第一本体3411和第二本体3421相对移动第一距离、第一嵌件3412和第二嵌件3422跟着相对移动第一距离、弹性件3410被压缩。
如图53至图56并结合图46与图48所示,当第二插接组件362插入后,第一连接片3423的第三接触部34233与正极公端子3623电性接触、第二连接片3424的第五接触部34242与对应第五连接片3424'的第五接触部34242均发生弹性形变并电性接触、第三连接片3425的 第七接触部34252与对应第六连接片3425'的第七接触部34252也发生弹性形变并电性接触、第四连接片3423'的第三接触部34233与负极公端子3624电性接触,此时,第一电池组与第二电池组相互串联形成第一电池串,第三电池组与第四电池组相互串联形成第二电池串,然后第一电池串与第二电池串相互并联(即串-并联连接),电池包300输出的第二工作电压为“2n”V。此时电池包300输出的第二工作电压等于两个电池组的额定输出电压之和,即U=u1+u2=u3+u4=48V。
如图57至图60并结合图46与图48所示,第三插接组件363包括本体部3631和形成在本体部3631上的公端子3632,公端子3632包括正极公端子3633和负极公端子3634,正极公端子3633用于与正极端子351对接,负极公端子3634用于与负极端子352对接,以此来实现电池包300端子组件350与第三插接组件363公端子3632的电性导通,实现电流与电压的传输。与图53所示的第二插接组件362不同的是:第三插接组件363的正极公端子3633与负极公端子3634之间的距离大于第二插接组件362的正极公端子3623与负极公端子3624之间的距离。
如图57至图60并结合图46与图48所示,当插入第三插接组件363时,在外部推力的作用下,正极公端子3633和负极公端子3634均在对应的第二导引面3419的导引作用下逐渐滑入,此时,因第一本体3411与第二本体3421的长度之和大于第三插接组件363的正极公端子3633与负极公端子3634之间的距离,故在插入第三插接组件363的过程中,会推动第一本体3411和第二本体3421相对移动第二距离、第一嵌件3412和第二嵌件3422跟着相对移动第二距离、弹性件3410被压缩;与此同时,使得第一连接片3423与第一正极端子3511断开、第四连接片3423'与第三负极端子3523断开。
如图57至图60并结合图47与图48所示,当第三插接组件363插入后,正极公端子3633与第二导引面3419下方的第一正极端子3511电性接触、第一连接片3423的第一接触部34231与对应第四连接片3423'的第一接触部34231电性接触、第二连接片3424的第五接触部34242与对应第五连接片3424'的第五接触部34242均发生弹性形变并电性接触、第三连接片3425的第七接触部34252与对应第六连接片3425'的第七接触部34252也发生弹性形变并电性接触、负极公端子3634与第二导引面3419下方的第三负极端子3523电性接触,此时,第一电池组、第二电池组、第四电池组及第三电池组相互串联连接,电池包300输出的第三工作电压为“4n”V。此时电池包300输出的第三工作电压等于四个电池组的额定输出电压之和,即U=u1+u2+u3+u4=96V。
如图46至图60所示,选用不同的插接组件360后,可以实现电池包300不同电压的输出,以此来满足三种不同电动工具的电压需求,而且三种电压之间的切换快速、便捷。当然,在电力传输结束后,直接将第一插接组件361或第二插接组件362或第三插接组件363拔出即可,此时第一本体3411和第二本体3421会在弹性件3410的弹性力作用下恢复到初始状态(即低压状态),以便做好准备等待下一次的插接。
如图45至图60所示,本发明的电池包300还可应用于一种充电系统(未图示),该充电系统包括前述电池包300和给电池包300充电的充电器。充电器上设置充电界面,以与电 池包300的电池界面配合。当充电器与电池包300对接进行充电时,切换组件340位于第一位置(即处于初始状态),此时,第一电池组、第二电池组、第三电池组及第四电池组相互并联,充电器输出的充电电压等于单个电池组的额定输出电压,为低电压,保护了电池包300不受高电流、高电压的冲击。
如图45至图60所示,本实施例的电池包300通过对切换组件340的第一部分341与第二部分342相对移动的距离进行控制,来实现电池包300内各个电池组的串、并联状态的切换,继而实现电池包300输出电压的变化,提高了具有该电池包300的电动工具系统的适配性。
如图61与图62所示,本发明揭示了一种电池包400,包括壳体410、收容在壳体410内的电池组420、电路板430以及与电池组420电性连接的切换组件440。电池组420包括若干电池组,切换组件440与每个电池组都电性连接。本发明的电池包400使用于一电动工具系统上,该电动工具系统还包括可插入电池包400以与电池包400进行对接的外部耦合件450。
如图62与图63所示,壳体410上设置有电池界面,以与电动工具配合,且电池界面上设置有输出端子槽,以收容输出端子。具体的,壳体410包括上壳体411和下壳体412,电池组420、电路板430及切换组件440均收容在由上壳体411与下壳体412围成的收容空间413内。上壳体411的顶部开设有两个对接槽414,上壳体411的侧壁上开设有两个插接口415,插接口415处设有与电池组420电性连接的正极端子416和负极端子417,正极端子416与电池组420的正极相连,以作为一个总正输出端与外部耦合件450进行对接,负极端子417与电池组420的负极相连,以作为一个总负输出端与外部耦合件450进行对接,以此来实现电池包400内电压的输出。
如图62所示,电池组420至少包括第一电池组A、第二电池组B、第三电池组C及第四电池组D,且第一电池组A的第一正极与第一负极、第二电池组B的第二正极与第二负极、第三电池组C的第三正极与第三负极以及第四电池组D的第四正极与第四负极均通过导电片421与切换组件440相连,方便通过切换组件440来控制各个电池组之间的连接方式,改变电池包400的输出电压。在本实施例中,第一电池组A水平设置,第二电池组B设置在第一电池组A之上,第三电池组C设置在第二电池组B之上,第四电池组D设置在第三电池组C之上。
如图62与图63所示,第一电池组A、第二电池组B、第三电池组C及第四电池组D均包括数个串联和/或并联连接的电芯,四个电池组具有相等的额定输出电压,假定每个电池组的额定输出电压为“n”V,则第一电池组A的额定输出电压u1=第二电池组B的额定输出电压u2=第三电池组C的额定输出电压u3=第四电池组D的额定输出电压u4=“n”V。电路板430位于切换组件440的下方、电池组420的上方,用于连接切换组件440和电池组420,正极端子416和负极端子417焊接固定在电路板430上。
如图62至图68所示,切换组件440具有第一状态,第二状态,第三状态,当切换组件440处于第一状态时,电池包400输出第一工作电压,当切换组件440处于第二状态时,电池包400输出第二工作电压,当切换组件440处于第三状态时,电池包400输出第三工作电 压。在本实施例中,切换组件440包括齿轮触发件441、与齿轮触发件441固定连接的开关组件442以及与电池组420相连的触发组件443。齿轮触发件441旋转设置,且当齿轮触发件441处于第一位置时,开关组件442使相应的触发组件443触发,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联,电池包400输出第一工作电压;当齿轮触发件441旋转至第二位置时,开关组件442同步旋转并使相应的触发组件443触发,第一电池组A、第二电池组B、第三电池组C及第四电池组D之间串并联连接(即串-并联连接或并联-串联连接),电池包400输出第二工作电压;当齿轮触发件441旋转至第三位置时,开关组件442同步旋转并使相应的触发组件443触发,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互串联,电池包400输出第三工作电压;第一工作电压小于第二工作电压,第二工作电压小于第三工作电压。
如图64至图68所示,齿轮触发件441上设有齿条4411,开关组件442通过自身的固定轴4422与齿轮触发件441同轴设置,从而在齿轮触发件441旋转时,可同步带动开关组件442旋转。触发组件443设置在开关组件442的外周侧,开关组件442上开设有凹槽4421,触发组件443具有闭合位置和断开位置,当触发组件443位于闭合位置时,触发组件443的一端突伸入凹槽4421,当触发组件443位于断开位置时,触发组件443的一端脱离凹槽4421。
如图64至图68所示,开关组件442至少包括上下排布的第一开关X、第二开关Y及第三开关Z,第一开关X、第二开关Y及第三开关Z上均开设有凹槽4421,且第一开关X和第三开关Z上均开设有3个凹槽4421,该3个凹槽4421的开设位置对应相同,第二开关Y上开设有4个凹槽4421,该4个凹槽4421分成2组且对称设置在第二开关Y的两侧。触发组件443至少包括第一触发组件4431、第二触发组件4432及第三触发组件4433,第一触发组件4431包括对应于第一开关X设置的第一触发件44311、对应于第二开关Y设置的第二触发件44312以及对应于第三开关Z设置的第三触发件44313;第二触发组件4432包括对应于第一开关X设置的第四触发件44321、对应于第二开关Y设置的第五触发件44322以及对应于第三开关Z设置的第六触发件44323;第三触发组件4433包括对应于第一开关X设置的第七触发件44331、对应于第二开关Y设置的第八触发件44332以及对应于第三开关Z设置的第九触发件44333。
如图62以及图64至图68所示,当齿轮触发件441处于第一位置时,第一触发组件4431和第三触发组件4433均位于闭合位置,第二触发组件4432位于断开位置,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联,此时电池包400输出的第一工作电压为“n”V;当齿轮触发件441旋转至第二位置时,第二触发件44312、第四触发件44321、第六触发件44323及第八触发件44332均位于闭合位置,第一触发件44311、第三触发件44313、第五触发件44322、第七触发件44331及第九触发件44333均位于断开位置,第一电池组A与第二电池组B串联连接形成第一电池串、第三电池组C与第四电池组D串联连接形成第二电池串,之后第一电池串与第二电池串再并联连接(即串-并联连接),此时电池包400输出的第二工作电压为“2n”V;当齿轮触发件441旋转至第三位置时,第二触发组件4432位于闭合位置,第一触发组件4431和第三触发组件4433均位于断开位置,第一电池组A、第二电 池组B、第三电池组C及第四电池组D相互串联,此时电池包400输出的第三工作电压为“4n”V。当然,当齿轮触发件441旋转至第二位置时也可根据实际情况将第一电池组A、第二电池组B、第三电池组C及第四电池组D设计成并-串联的连接方式,此时电池包400也能输出第二工作电压“2n”V。
如图64至图68所示,每个触发件均包括静接触片444、与静接触片444相对设置的动接触片445以及与动接触片445相连的开关触发块446,当触发件位于闭合位置时,开关触发块446突伸入对应的凹槽4421,动接触片445与静接触片444电性连接;当触发件位于断开位置时,开关触发块446脱离对应的凹槽4421,动接触片445与静接触片444断开。
如图64至图68所示,切换组件440还包括用于收容开关组件442和触发组件443的收容箱4401,收容箱4401内设有多个收容腔,以供分别收容开关组件442和触发组件443,静接触片444贴合收容腔的内侧壁设置。每个触发件还包括限位在动接触片445与收容腔内侧壁之间的弹簧447,当触发件位于闭合位置时,弹簧447持续抵顶动接触片445,使动接触片445与静接触片444保持接触;如此设计,减少了振动对动接触片445和静接触片444的接触稳定性的影响。
如图64至图68所示,收容腔包括供收容开关组件442的第一收容腔4402和供收容触发组件443的第二收容腔4403,第一收容腔4402大致位于收容箱4401的中心位置处,第二收容腔4403设置有三个并与第一收容腔4402组合成T字型。第一收容腔4402与第二收容腔4403相连通,静接触片444贴合第二收容腔4403的内侧壁设置,当触发件位于断开位置时,开关触发块446全部收容在第二收容腔4403内,当触发件位于闭合位置时,开关触发块446一端的凸出部4461突伸入第一收容腔4402,与对应位置处的凹槽4421相配合。
如图64至图68所示,第二收容腔4403的底部设有第一限位槽4404,开关触发块446限位收容于第一限位槽4404;第二收容腔4403的后侧壁上设有第二限位槽4405,弹簧447的一端限位在第二限位槽4405内。开关触发块446的后部设有卡槽4462,动接触片445垂直于开关触发块446设置并卡持于卡槽4462,弹簧447也收容于卡槽4462,以在开关组件442同步旋转时推动动接触片445和开关触发块446沿第一限位槽4404自断开位置朝向闭合位置移动。
如图67至图68所示,本实施例中,动接触片445的两端均设有动接触点4451,每个第二收容腔4403内也对应设有两个静接触片444,每个静接触片444上都设有静接触点4441,从而两个动接触点4451可与对应的两个静接触点4441对接或断开,实现触发件的闭合或断开。
如图64至图68所示,切换组件440的工作原理可以简述为:开关组件442上的凹槽4421可以用来容纳开关触发块446的凸出部4461,当凹槽4421移动到开关触发块446区域时,动接触片445后部的弹簧447自动推动动接触片445和开关触发块446,使得开关触发块446的凸出部4461从第二收容腔4403推出到第一收容腔4402,动接触片445从断开位置被推到闭合位置,实现与静接触片444的对接;而开关组件442的非凹槽部分也可以推动开关触发块446移动,使凸出部4461缩回至第二收容腔4403,在移动的过程中,开关触发块446需 要克服动接触片445后部的弹簧447的推力,推动动接触片445从闭合位置移动到断开位置,实现动接触片445与静接触片444的断开。
如图62以及图69至图75所示,外部耦合件450包括第一外部耦合件451、第二外部耦合件452及第三外部耦合件453,为了方便描述,定义电动工具系统包括第一电动工具、第二电动工具及第三电动工具,第一电动工具能够在第一工作电压下运行,且第一电动工具上设置有与电池包的电池界面配合的第一工具界面,具体的,第一外部耦合件451设置在第一电动工具上,且为第一电动工具与电池包400连接的第一插头;第二电动工具能够在第二工作电压下运行,且第二电动工具上设置有与电池包的电池界面配合的第二工具界面,具体的,第二外部耦合件452设置在第二电动工具上,且为第二电动工具与电池包400连接的第二插头;第三电动工具能够在第三工作电压下运行,且第三电动工具上设置有与电池包的电池界面配合的第三工具界面,具体的,第三外部耦合件453设置在第三电动工具上,且为第三电动工具与电池包400连接的第三插头。以下将以这三种外部耦合件为例,对本发明电池包400的电压切换原理进行详细说明。定义每个电池组均包括5节串联而成的电芯,每个电池组的电压为20V。
如图62至图63以及图69所示,第一外部耦合件451包括本体部4511及与本体部4511一体成型的正极插接片4512和负极插接片4513,插入第一外部耦合件451后,正极插接片4512与正极端子416插接,负极插接片4513与负极端子417插接,以此来实现电池包400与第一外部耦合件451的电性连接和机械连接,实现电流与电压的传输。
如图65至图71所示,将第一外部耦合件451自插接口415插入后,正极插接片4512与正极端子416插接、负极插接片4513与负极端子417插接,齿轮触发件441不发生旋转,此时齿轮触发件441处于第一位置(即初始状态),第一触发件44311(即开关X1)、第二触发件44312(即开关Y1)、第三触发件44313(即开关Z1)、第七触发件44331(即开关X3)、第八触发件44332(即开关Y3)及第九触发件44333(即开关Z3)均位于闭合位置,第四触发件44321(即开关X2)、第五触发件44322(即开关Y2)及第六触发件44323(即开关Z2)位于断开位置,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联连接。此时电池包400输出的第一工作电压等于各个电池组的额定输出电压,即U=u1=u2=u3=u4=20V。
如图72并结合图62与图68所示,第二外部耦合件452包括本体部4521及与本体部4521一体成型的正极插接片4522和负极插接片4523,插入第二外部耦合件452后,正极插接片4522与正极端子416插接,负极插接片4523与负极端子417插接,以此来实现电池包400与第二外部耦合件452的电性连接和机械连接,实现电流与电压的传输。与图69所示的第一外部耦合件451不同的是:第二外部耦合件452的本体部4521上设有齿条触发杆4524,齿条触发杆4524与齿轮触发件441相对设置,以在插入第二外部耦合件452时,齿条触发杆4524与齿轮触发件441相啮合并带动齿轮触发件441正向旋转。
如图73并结合图62与图70所示,插入第二外部耦合件452时,齿条触发杆4524自对接槽414进入并与齿轮触发件441相啮合,水平推动第二外部耦合件452的本体部4521,直 至正极插接片4522与正极端子416插接、负极插接片4523与负极端子417插接,此时齿轮触发件441在齿条触发杆4524的带动下被推动旋转至第二位置,第二触发件44312(即开关Y1)、第四触发件44321(即开关X2)、第六触发件44323(即开关Z2)及第八触发件44332(即开关Y3)均位于闭合位置,第一触发件44311(即开关X1)、第三触发件44313(即开关Z1)、第五触发件44322(即开关Y2)、第七触发件44331(即开关X3)及第九触发件44333(即开关Z3)均位于断开位置,形成了第一电池组A与第二电池组B串联连接、第三电池组C与第四电池组D串联连接,之后再相互并联的连接方式(串-并联连接)。此时电池包400输出的第二工作电压等于两个电池组的额定输出电压之和,即U=u1+u2=u3+u4=40V。
如图74并结合图62与图68所示,第三外部耦合件453包括本体部4531及与本体部4531一体成型的正极插接片4532和负极插接片4533,插入第三外部耦合件453后,正极插接片4532与正极端子416插接,负极插接片4533与负极端子417插接,以此来实现电池包400与第三外部耦合件453的电性连接和机械连接,实现电流与电压的传输。与图72所示的第二外部耦合件452不同的是:第三外部耦合件453上也设置有齿条触发杆4534,以带动齿轮触发件441正向旋转;但是,齿条触发杆4534与插接口415(或正、负极插接片4532、4533)之间的距离大于齿条触发杆4524与插接口415(或正、负极插接片4522、4523)之间的距离,以使得齿轮触发件441在齿条触发杆4534带动下转动的行程大于齿轮触发件441在齿条触发杆4524带动下转动的行程。
如图75并结合图62至图70所示,插入第三外部耦合件453时,齿条触发杆4534自对接槽414进入并与齿轮触发件441相啮合,水平推动第三外部耦合件453的本体部4531,直至正极插接片4532与正极端子416插接、负极插接片4533与负极端子417插接,此时齿轮触发件441在齿条触发杆4534的带动下被推动旋转至第三位置,第一触发件44311(即开关X1)、第二触发件44312(即开关Y1)、第三触发件44313(即开关Z1)、第七触发件44331(即开关X3)、第八触发件44332(即开关Y3)及第九触发件44333(即开关Z3)均位于断开位置,第四触发件44321(即开关X2)、第五触发件44322(即开关Y2)及第六触发件44323(即开关Z2)位于闭合位置,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互串联连接。此时电池包400输出的第三工作电压等于四个电池组的额定输出电压之和,即U=u1+u2+u3+u4=80V。
如图69至图75所示,第二外部耦合件452插入后,齿轮触发件441会在齿条触发杆4524的带动下旋转第一角度,直至齿轮触发件441处于第二位置;第三外部耦合件453插入后,齿轮触发件441会在齿条触发杆4534的带动下旋转第二角度,直至齿轮触发件441处于第三位置,第一角度小于第二角度。优选的,第一角度为45°,第二角度为90°,但不应以此为限,也可根据实际情况调整为其他角度。
如图69至图75所示,可以看出:选用不同的外部耦合件450后,可以实现电池包400不同电压的输出,以此来满足三种不同电动工具的电压需求,而且三种电压之间的切换快速、便捷。当然,在电力传输结束后,直接将第一外部耦合件451或第二外部耦合件452或第三外部耦合件453拔出即可,此时齿轮触发件441会在齿条触发杆4524或齿条触发杆4534的 带动下反向旋转,直至到达第一位置,即初始状态,以便做好准备等待下一次的插接。
如图76并结合图62至图70所示,电池包400还具有运输模式,该运输模式借助一第四外部耦合件454来实现,第四外部耦合件454也包括本体部4541及与本体部4541一体成型的正极插接片4542和负极插接片4543,插入第四外部耦合件454后,正极插接片4542与正极端子416插接,负极插接片4543与负极端子417插接,以此来实现电池包400与第四外部耦合件454的电性连接和机械连接。与图74所示的第三外部耦合件453不同的是:第四外部耦合件454上也设有齿条触发杆4544,但齿条触发杆4544的位置与齿条触发杆4534的位置相反,换言之,相对于同一个本体部而言,齿条触发杆4544位于本体部的右半侧且齿条触发杆4544上的齿条朝向左边方向,而齿条触发杆4534则位于本体部的左半侧且齿条触发杆4534上的齿条朝向右边方向,从而齿条触发杆4534能够带动齿轮触发件441正向旋转,而齿条触发杆4544则带动齿轮触发件441反向旋转。
如图76至图77并结合图62至图70所示,插入第四外部耦合件454时,齿条触发杆4544自上壳体411顶部的另一个对接槽414进入并与齿轮触发件441相啮合,水平推动第四外部耦合件454的本体部4541,直至正极插接片4542与正极端子416插接、负极插接片4543与负极端子417插接,此时齿轮触发件441在齿条触发杆4544的带动下反向旋转至第四状态,第一触发件44311(即开关X1)、第二触发件44312(即开关Y1)、第三触发件44313(即开关Z1)、第四触发件44321(即开关X2)、第五触发件44322(即开关Y2)、第六触发件44323(即开关Z2)、第七触发件44331(即开关X3)、第八触发件44332(即开关Y3)及第九触发件44333(即开关Z3)均位于断开位置,第一电池组A、第二电池组B、第三电池组C及第四电池组D全部断开,此时电池包400无电压输出。
如图77并结合图65与图70所示,因第四外部耦合件454插入时整个电池包400无电压输出,此时可在有保护的状态下对电池包400进行长途运输或其他不带电操作,保护了电池包400和操作人员。在该状态下,齿轮触发件441的反向旋转角度优选为22.5°,但不应以此为限。
如图61至图77所示,本发明的电池包400还可应用于一种充电系统(未图示),该充电系统包括前述电池包400和给电池包400充电的充电器。充电器上设置充电界面,以与电池包400的电池界面配合。当充电器与电池包400对接进行充电时,齿轮触发件441处于第一位置,此时,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联,充电器输出的充电电压等于单个电池组的额定输出电压,为低电压,保护了电池包400不受高电流、高电压的冲击。
如图61至图77所示,本实施例的电池包400通过将齿轮触发件441旋转至不同位置(或不同状态),来改变开关组件442的闭合或断开状态,使得对应的触发组件443触发,以此来实现电池包400内各个电池组的串、并联状态切换,继而改变电池包400的输出电压(至少可以输出三种电压),提高了具有该电池包400的电动工具系统的适配性。
如图78与图79所示,本发明揭示了一种电池包500,包括壳体510、收容在壳体510内的电池组520、电路板530以及与电池组520电性连接的切换组件540。电池组520包括若干 电池组,切换组件540与每个电池组都电性连接。本发明的电池包500使用于一电动工具系统上,该电动工具系统还包括可插入电池包500以与电池包500进行对接的外部耦合件550。
如图79至图81所示,壳体510上设置有电池界面,以与电动工具配合,且电池界面上设置有输出端子槽,以收容输出端子。具体的,壳体510包括上壳体511和下壳体512,电池组520、电路板530及切换组件540均收容在由上壳体511与下壳体512围成的收容空间513内。上壳体511的顶部开设有一通孔514,上壳体511的侧壁上开设有两个插接口515,插接口515处设有与电池组520电性连接的正极端子516和负极端子517,正极端子516与电池组520的正极相连,以作为一个总正输出端子与外部耦合件550进行对接,负极端子517与电池组520的负极相连,以作为一个总负输出端子与外部耦合件550进行对接,以此来实现电池包500内电压的输出。
如图79所示,电池组520至少包括第一电池组A、第二电池组B、第三电池组C及第四电池组D,且第一电池组A的正极与负极、第二电池组B的正极与负极、第三电池组C的正极与负极以及第四电池组D的正极与负极均通过导电片521与切换组件540相连,方便通过切换组件540来控制各个电池组之间的连接方式,改变电池包500的输出电压。
如图79至图80所示,第一电池组A、第二电池组B、第三电池组C及第四电池组D均包括数个串联和/或并联连接的电芯,四个电池组具有相等的额定输出电压,假定每个电池组的额定输出电压为“n”V,则第一电池组A的额定输出电压u1=第二电池组B的额定输出电压u2=第三电池组C的额定输出电压u3=第四电池组D的额定输出电压u4=“n”V。电路板530位于切换组件540的下方、电池组520的上方,用于连接切换组件540和电池组520,正极端子516和负极端子517焊接固定在电路板530上。
如图79、图82至图86所示,切换组件540具有第一状态,第二状态,第三状态,当切换组件540处于第一状态时,电池包500输出第一工作电压,当切换组件540处于第二状态时,电池包500输出第二工作电压,当切换组件540处于第三状态时,电池包500输出第三工作电压。在本实施例中,切换组件540旋转设置且具有至少三个目标区域,当切换组件540旋转至第一目标区域a(第一位置)时,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联,电池包500输出第一工作电压;当切换组件540旋转至第二目标区域b(第二位置)时,第一电池组A、第二电池组B、第三电池组C及第四电池组D之间串并联连接(即串-并联连接或者并-串联连接),电池包500输出第二工作电压;当切换组件540旋转至第三目标区域c(第三位置)时,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互串联,电池包500输出第三工作电压;第一工作电压小于第二工作电压,第二工作电压小于第三工作电压。
如图79、图82至图86所示,切换组件540包括固定组件541和相对于固定组件541可旋转的转动组件542,固定组件541上形成有与电池组520电性连接的连接件,连接件包括位于第一目标区域a的第一连接件543、位于第二目标区域b的第二连接件544及位于第三目标区域c的第第三连接件545,转动组件542上形成有触发件5420,当转动组件542旋转至第一目标区域a时,触发件5420与第一连接件543电性连接;当转动组件542旋转至第二 目标区域b时,触发件5420与第二连接件544电性连接;当转动组件542旋转至第三目标区域c时,触发件5420与第第三连接件545电性连接。本实施例中,第一连接件543、第二连接件544及第第三连接件545均属于一端形成在导电片521上、另一端穿插固定在固定组件541上。
如图79、图82至图86所示,固定组件541包括呈圆盘状设置的第一固定部5411和第二固定部5412以及连接第一固定部5411和第二固定部5412的连接部5413,第一固定部5411的直径小于第二固定部5412的直径,第一固定部5411嵌入电路板530内,以实现固定组件541与电路板530的固定连接。连接部5413垂直于电路板530设置,以使得第二固定部5412与电路板530之间存在间距。第二固定部5412的中心位置处开设有孔洞5414,第一目标区域a、第二目标区域b及第三目标区域c分布在固定组件541的第二固定部5412上,且第一目标区域a、第二目标区域b及第三目标区域c内均开设有若干过孔5415,这些过孔5415均贯穿第二固定部5412设置,以供对应的第一连接件543、第二连接件544和第第三连接件545穿过并暴露于第二固定部5412的上表面。
如图79、图82至图86所示,转动组件542上的触发件5420呈矩形条状设置并设置有四个,该四个触发件5420相互平行且间隔设置,用于与第二固定部5412上的第一连接件543、第二连接件544或第第三连接件545电性连接,以此来实现触发件5420与电池组520的电性连接。
如图79至图80、图82至图89所示,第一连接件543、第二连接件544及第三连接件545均包括与第一电池组A的第一正极相连的第一正凸柱A+、与第一电池组A的第一负极相连的第一负凸柱A-、与第二电池组B的第二正极相连的第二正凸柱B+、与第二电池组B的第二负极相连的第二负凸柱B-、与第三电池组C的第三正极相连的第三正凸柱C+、与第三电池组C的第三负极相连的第三负凸柱C-、与第四电池组D的第四正极相连的第四正凸柱D+以及与第四电池组D的第四负极相连的第四负凸柱D-,其中第一正凸柱A+与正极端子516电性连接、第四负凸柱D-与负极端子517电性连接。
如图82至图86所示,第一目标区域a内,第一正凸柱A+、第二正凸柱B+、第三正凸柱C+及第四正凸柱D+排布于第一列,第一负凸柱A-、第二负凸柱B-、第三负凸柱C-及第四负凸柱D-排布于第二列,第一列与第二列相互平行且间隔设置,当转动组件542旋转至第一目标区域a时,其中两个触发件5420分别与第一列和第二列电性接触,使得第一列的各正凸柱相互连接、第二列的各负凸柱相互连接,此时第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联,电池包500输出的第一工作电压为“n”V。
如图79、图82至图86所示,第二目标区域b内,第三负凸柱C-与第四正凸柱D+排布于第一列、第一负凸柱A-与第二正凸柱B+排布于第二列、第二负凸柱B-与第四负凸柱D-排布于第三列、第三正凸柱C+与第一正凸柱A+排布于第四列,第一列、第二列、第三列及第四列相互平行且间隔设置,当转动组件542旋转至第二目标区域b时,四个触发件5420分别与第一列、第二列、第三列及第四列电性接触,使得第一列的各凸柱相互连接、第二列的各凸柱相互连接、第三列的各凸柱相互连接、第四列的各凸柱相互连接,此时第一电池组A 与第二电池组B串联连接形成第一电池串,第三电池组C与第四电池组D串联连接形成第二电池串,之后第一电池串与第二电池串再并联连接(即串-并联连接),电池包500输出的第二工作电压为“2n”V。
如图79、图82至图86所示,第三目标区域c内,第二负凸柱B-与第三正凸柱C+排布于第一列、第一负凸柱A-与第二正凸柱B+排布于第二列、第三负凸柱C-与第四正凸柱D+排布于第三列,第一列、第二列及第三列相互平行且间隔设置,当转动组件542旋转至第三目标区域c时,其中三个触发件5420分别与第一列、第二列及第三列电性接触,使得第一列的各凸柱相互连接、第二列的各凸柱相互连接、第三列的各凸柱相互连接,此时第一电池组A、第二电池组B、第三电池组C及第四电池组D相互串联,电池包500输出的第三工作电压为“4n”V。
如图82至图86所示,在转动组件542旋转至第二目标区域b时,也可根据实际情况将第一电池组A、第二电池组B、第三电池组C及第四电池组D设计成并-串联连接,此时电池包500也能输出第二工作电压“2n”V。
如图82至图86所示,第二固定部5412上还设有第四目标区域d,该第四目标区域d属于第二固定部5412的一部分,没有设置任何的凸柱来与电池组520电性连接,从而当转动组件542旋转至第四目标区域d时,电池包500无电压输出,此时可在有保护的状态下对电池包500进行长途运输或其他不带电操作,保护了电池包500和操作人员。
如图82至图86所示,转动组件542包括转动主体5421和形成在转动主体5421上的转动件5422,触发件5420嵌入转动主体5421并在转动主体5421的面向固定组件541一侧表面暴露,如此,才能在转动时实现触发件5420与对应第一连接件543、第二连接件544或第第三连接件545的电性接触。转动主体5421的底部形成有限位杆5423,该限位杆5423用于穿过第二固定部5412上的孔洞5414,以此来实现转动组件542与固定组件541的连接,并在扳动转动件5422时使转动组件542能够灵活的转动。
如图81至图86所示,转动主体5421的周向外边缘上设有凸起5424,上壳体511的内侧壁上对应设有收容槽518,收容槽518开设有至少三个,以分别对应第一目标区域a、第二目标区域b及第三目标区域c,以便转动组件542在第一目标区域a、第二目标区域b及第三目标区域c之间进行转动切换时,凸起5424限位收容于对应目标区域的收容槽518。本实施例中,凸起5424设置有四个且均匀分布在转动主体5421的周向外边缘上;上壳体511的内侧壁上对应设有四个凸块519,每个凸块519上均开设有一个收容槽518,从而转动组件542在第一目标区域a、第二目标区域b、第三目标区域c及第四目标区域d之间进行转动切换时,均可利用四个凸起5424与四个收容槽518的相互限位来固定转动组件542,增强了转动组件542的结构稳定性。在其他实施例中,凸起5424也可以只设置一个或两个或三个、收容槽518设置有三个或四个,只要能够实现对转动组件542的固定即可,此处不作限制。
如图81至图86所示,转动件5422自转动主体5421的背离固定组件541一侧表面向外突伸,以便在扳动转动件5422时,带动转动主体5421和触发件5420同步转动。本实施例中,转动件5422自上壳体511顶部的通孔514突伸出,以便在扳动转动件5422时,带动转动主 体5421和触发件5420同步在第一目标区域a、第二目标区域b、第三目标区域c及第四目标区域d之间转动切换。
如图79所示,外部耦合件550包括第一外部耦合件、第二外部耦合件及第三外部耦合件,为了方便描述,定义电动工具系统包括第一电动工具、第二电动工具及第三电动工具,第一电动工具能够在第一工作电压下运行,且第一电动工具具有第一工具界面,第一工具界面包括设置在第一电动工具上的第一插头,且第一插头例如为第一外部耦合件;第二电动工具能够在第二工作电压下运行,且第二电动工具具有第二工具界面,第二工具界面包括设置在第二电动工具上的第二插头,且第二插头例如为第二外部耦合件;第三电动工具能够在第三工作电压下运行,且第三电动工具具有第三工具界面,第三工具界面包括设置在第三电动工具上的第三插头,且第三插头例如为第三外部耦合件。且每个插头设置有触发装置,触发装置用于切换组件进行配合,以使切换组件在不同状态之间转换。以下将以这三种外部耦合件为例,对本发明电池包500的电压切换原理进行详细说明。定义每个电池组均包括5节串联而成的电芯,每个电池组的电压为20V。
如图82所示,转动组件542的旋转是通过手动旋转转动件5422来实现的,故第一外部耦合件、第二外部耦合件及第三外部耦合件的结构可以完全相同,也可以不相同。为了描述方便,以下将以相同结构的外部耦合件来举例说明。
如图87所示,外部耦合件550包括本体部551及与本体部551一体成型的正极插接片552和负极插接片553,插入外部耦合件550后,正极插接片552与正极端子516插接,负极插接片553与负极端子517插接,以此来实现电池包500与外部耦合件550的电性连接和机械连接,实现电流与电压的传输。
如图79至图88所示,当电池包500与第一电动工具连接时,手动旋转转动件5422,使转动组件542整体转动至第一目标区域a,此时转动主体5421底部的第一个触发件5420将第一正凸柱A+、第二正凸柱B+、第三正凸柱C+及第四正凸柱D+连接,第四个触发件5420将第一负凸柱A-、第二负凸柱B-、第三负凸柱C-及第四负凸柱D-连接,使得第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联连接。此时电池包500输出的第一工作电压等于各个电池组的额定输出电压,即U=u1=u2=u3=u4=20V。
如图79至图88所示,当电池包500与第二电动工具连接时,手动旋转转动件5422,使转动组件542整体转动至第二目标区域b,此时转动主体5421底部的第一个触发件5420将第三负凸柱C-与第四正凸柱D+连接、第二个触发件5420将第一负凸柱A-与第二正凸柱B+连接、第三个触发件5420将第二负凸柱B-与第四负凸柱D-连接、第四个触发件5420将第三正凸柱C+与第一正凸柱A+连接,形成了第一电池组A与第二电池组B串联连接、第三电池组C与第四电池组D串联连接,之后再相互并联的连接方式(串-并联连接)。此时电池包500输出的第二工作电压等于两个电池组的额定输出电压之和,即U=u1+u2=u3+u4=40V。
如图79至图90所示,当电池包500与第三电动工具连接时,手动旋转转动件5422,使转动组件542整体转动至第三目标区域c,此时转动主体5421底部的第一个触发件5420将第二负凸柱B-与第三正凸柱C+连接、第二个触发件5420将第一负凸柱A-与第二正凸柱B+ 连接、第四个触发件5420将第三负凸柱C-与第四正凸柱D+连接,使得第一电池组A、第二电池组B、第三电池组C及第四电池组D相互串联连接。此时电池包500输出的第三工作电压等于四个电池组的额定输出电压之和,即U=u1+u2+u3+u4=80V。
如图82、图88至图90所示,将转动组件542旋转至不同的目标区域后,可以实现电池包500不同电压的输出,以此来满足三种不同电动工具的电压需求,而且三种电压之间的切换快速、便捷。在电力传输结束后,先将转动组件542整体旋转至第四目标区域d,然后拔出外部耦合件550即可。
如图82所示,当然,在其他实施例中,转动件5422的旋转也可设置成自动触发,此时就需要在对应不同电压的第一外部耦合件、第二外部耦合件及第三外部耦合件上设置触发部件,从而在电池包500与第一电动工具或第二电动工具或第三电动工具连接时,可利用相应的触发部件来触发转动件5422,使转动组件542旋转至对应的目标区域、电池包500输出电压。优选的,该触发部件可以是突设在第一外部耦合件、第二外部耦合件或第三外部耦合件上的突出部,利用该突出部来推动转动件5422旋转即可;触发部件也可以是设置在第一外部耦合件、第二外部耦合件或第三外部耦合件上的带齿的齿条,此时只需在转动件5422上设置相应的齿,利用两个齿的相互啮合即可实现触发部件推动转动件5422旋转。当然,不应以此为限。
如图78至图90所示,本发明的电池包500还可应用于一种充电系统(未图示),该充电系统包括前述电池包500和给电池包500充电的充电器。充电器上设置充电界面,以与电池包500的电池界面配合。当充电器与电池包500对接进行充电时,将转动组件542旋转至第一目标区域a,此时,第一电池组A、第二电池组B、第三电池组C及第四电池组D相互并联,充电器输出的充电电压等于单个电池组的额定输出电压,为低电压,保护了电池包500不受高电流、高电压的冲击。
如图78至图90所示,本实施例的电池包500利用转动组件542的旋转来与不同目标区域的连接件进行对接,以此来实现电池包500内各个电池组的串并联状态切换,继而改变电池包500的输出电压(至少可以输出三种电压),提高了具有该电池包500的电动工具系统的适配性。
在本说明书的描述中,参考术语“本实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上公开的本发明实施例只是用于帮助阐述本发明。实施例并没有详尽叙述所有的细节,也不限制该发明仅为的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本发明的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。
Claims (20)
- 一种多压电池包,用以与具有不同工作电压的电动工具配合,包括:壳体;电池组,收容在所述壳体中,所述电池组包括:第一电池组,所述第一电池组包括多个相互串联的电芯;第二电池组,所述第二电池组包括多个相互串联的电芯;第三电池组,所述第三电池组包括多个相互串联的电芯;第四电池组,所述第四电池组包括多个相互串联的电芯;电池界面,所述电池界面设置在所述壳体上,用以与所述电动工具进行配合;切换组件,设置在所述壳体内并与所述电池组电性连接,所述切换组件具有第一状态,第二状态及第三状态;当所述切换组件处于第一状态时,所述多压电池包输出第一工作电压;当所述切换组件处于第二状态时,所述多压电池包输出第二工作电压;当所述切换组件处于第三状态时,所述多压电池包输出第三工作电压;其中,所述第三工作电压大于所述第二工作电压,所述第二工作电压大于第一工作电压。
- 根据权利要求1所述的多压电池包,其特征在于,所述第一电池组设有第一正极和第一负极,所述第二电池组设有第二正极和第二负极,所述第三电池组设有第三正极和第三负极,所述第四电池组设有第四正极和第四负极。
- 根据权利要求1所述的多压电池包,其特征在于,当所述切换组件处于第一状态时,所述切换组件位于第一位置,当所述切换组件处于第二状态时,所述切换组件位于第二位置,当所述切换组件处于第三状态时,所述切换组件位于第三位置。
- 根据权利要求2所述的多压电池包,其特征在于,当切换组件处于第一状态时,所述第一正极,第二正极,第三正极,第四正极相互连接,所述第一负极,第二负极,第三负极,第四负极相互连接,所述第一电池组,第二电池组,第三电池组和第四电池组相互并联。
- 根据权利要求2所述的多压电池包,其特征在于,当切换组件处于第二状态时,所述第一正极,第二正极相互连接,所述第一负极,第二负极,第三正极,第四正极相互连接,所述第三负极,第四负极相互连接,所述第一电池组,第二电池组,第三电池组和第四电池组处于并-串联状态。
- 根据权利要求2所述的多压电池包,其特征在于,当切换组件处于第二状态时,所述第一正极,第三正极相互连接,所述第一负极,第二正极相互连接,所述第三负极,第四正极相互连接,所述第二负极,第四负极相互连接,所述第一电池组,第二电池组,第三电池组和第四电池组处于串-并联状态。
- 根据权利要求2所述的多压电池包,其特征在于,当切换组件处于第三状态时,所述第一负极与所述第二正极连接,所述第二负极与所述第三正极连接,所述第三负极与所述第四正极连接,所述第一电池组,第二电池组,第三电池组和第四电池组相互串联。
- 根据权利要求1所述的多压电池包,其特征在于,所述第一电池组,第二电池组,第三电池组和第四电池组的电压分别为nV,所述第一工作电压为nV,所述第二工作电压为2nV, 所述第三工作电压为4nV。
- 根据权利要求8所述的多压电池包,其特征在于,当nV为18V,所述第一工作电压为18V,所述第二工作电压为36V,所述第三工作电压为72V。
- 根据权利要求8所述的多压电池包,其特征在于,当nV为20V,所述第一工作电压为20V,所述第二工作电压为40V,所述第三工作电压为80V。
- 根据权利要求8所述的多压电池包,其特征在于,当nV为24V,所述第一工作电压为24V,所述第二工作电压为48V,所述第三工作电压为96V。
- 根据权利要求1所述的多压电池包,其特征在于,所述电池包还包括电路板和输出端子,所述电路板收容在所述壳体内并与输出端子电性连接,所述输出端子用于向电所述动工具输出能量,所述电池界面上设置有输出端子槽,所述输出端子槽用于收容所述输出端子。
- 根据权利要求1所述的多压电池包,其特征在于,所述第一电池组水平设置,所述第二电池组设置在所述第一电池组之上,所述第三电池组设置在所述第二电池组之上,所述第四电池组设置在所述第三电池组之上。
- 根据权力要求1所述的多压电池包,其特征在于,所述第一电池组,第二电池组,第三电池组和第四电池组包括5节电芯。
- 根据权力要求1所述的多压电池包,其特征在于,所述第一电池组,第二电池组,第三电池组和第四电池组包括6节电芯。
- 根据权利要求1所述的多压电池包,其特征在于,在初始状态下,所述切换组件处于第一状态,所述第一电池组,第二电池组,第三电池组和第四电池组相互并联,所述电池包输出第一工作电压。
- 一种电动工具系统,包括:第一电动工具,所述第一电动工具具有第一工具界面并能够在第一工作电压下工作;第二电动工具,所述第二电动工具具有第二工具界面并能够在第二工作电压下工作;第三电动工具,所述第三电动工具具有第三工具界面并能够在第三工作电压下工作;多压电池包,所述多压电池包包括:壳体;电池组,收容在所述壳体中,所述电池组包括:第一电池组,所述第一电池组包括多个相互串联的电芯;第二电池组,所述第二电池组包括多个相互串联的电芯;第三电池组,所述第三电池组包括多个相互串联的电芯;第四电池组,所述第四电池组包括多个相互串联的电芯;电池界面,所述输出界面设置在所述壳体上,用以与(1)所述第一电动工具的第一工具界面进行配合;(2)所述第二电动工具的第二工具界面配合;(3)所述第三电动工具的第三工具界面进行配合;切换组件,设置在所述壳体内并与所述电池组电性连接,所述切换组件具有第一状态,第二状态,第三状态;当所述第一电动工具与所述多压电池包配合时,所述切换组件处于第一状态,所述多压电池包向所述第一电动工具输出第一工作电压;当所述第二电动工具与所述多压电池包配合时,所述切换组件处于第二状态,所述多压电池包向所述第二电动工具输出第二工作电压;当所述第三电动工具与所述多压电池包配合时,所述切换组件处于第三状态,所述多压电池包向所述第三电动工具输出第三工作电压;其中,所述第三工作电压大于所述第二工作电压,所述第二工作电压大于第一工作电压。
- 根据权利要求17所述的电动工具系统,其特征在于,所述第一工具界面具有第一配置的第一插头,所述第二工具界面具有第二配置的第二插头,所述第三工具界面具有第三配置的第三插头,第一插头,第二插头,第三插头的配置不同。
- 根据权利要求18所述的电动工具系统,其特征在于,所述第一插头.第二插头,第三插头中至少两个设有触发装置,所述触发装置用于所述切换组件进行配合,以使所述切换组件在不同状态之间转换。
- 一种充电系统,包括,充电器,所述充电器设有充电界面;多压电池包,用以与具有不同工作电压的电动工具配合,包括:壳体;电池组,收容在所述壳体中,所述电池组包括:第一电池组,所述第一电池组包括多个相互串联的电芯;第二电池组,所述第二电池组包括多个相互串联的电芯;第三电池组,所述第三电池组包括多个相互串联的电芯;第四电池组,所述第四电池组包括多个相互串联的电芯;电池界面,所述电池界面设置在所述壳体上,用以与所述电动工具进行配合;切换组件,设置在所述壳体内并与所述电池组电性连接,所述切换组件具有第一状态,第二状态,第三状态;当所述切换组件处于第一状态时,所述多压电池包输出第一工作电压;当所述切换组件处于第二状态时,所述多压电池包输出第二工作电压;当所述切换组件处于第三状态时,所述多压电池包输出第三工作电压;其中,所述第三工作电压大于所述第二工作电压,所述第二工作电压大于第一工作电压;当所述多压电池包与所述充电器配合时,所述充电界面与所述电池界面配合,所述切换组件处于第一状态,所述第一电池组,第二电池组,第三电池组和第四电池组相互并联连接,所述充电器以第一工作电压为所述多压电池包充电。
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