WO2022218051A1 - 电池包及电动工具 - Google Patents
电池包及电动工具 Download PDFInfo
- Publication number
- WO2022218051A1 WO2022218051A1 PCT/CN2022/078981 CN2022078981W WO2022218051A1 WO 2022218051 A1 WO2022218051 A1 WO 2022218051A1 CN 2022078981 W CN2022078981 W CN 2022078981W WO 2022218051 A1 WO2022218051 A1 WO 2022218051A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery pack
- terminal
- cell assembly
- ventilating
- assembly
- Prior art date
Links
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- 238000009423 ventilation Methods 0.000 claims description 81
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Images
Classifications
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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
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
- H01M10/6235—Power tools
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- 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
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
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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 present application relates to a battery pack, for example, a battery pack suitable for power tools.
- the present application provides a battery pack suitable for electric tools, which makes the structure of the battery pack simpler, the cost is lower, the weight of the whole pack is reduced, and the air pressure inside and outside the battery pack can be balanced.
- a battery pack configured to supply power to an electric tool, the battery pack comprising: a casing; a cell assembly, which is arranged in the casing, the cell assembly comprising a plurality of cell units arranged in layers; an elastic pad , the elastic pads are respectively arranged between the adjacent battery core units; an air cavity is formed between the elastic pads and the adjacent battery core units; the sealing member is arranged at least on the battery core components The surface of the sealing member and the casing form a sealed cavity; the ventilation element is partially arranged on the side of the battery core assembly and extends into the plurality of air cavities along the first direction; the ventilation element is connected to the air cavity. Air communication outside the sealed cavity.
- the ventilating element includes a ventilating body and a plurality of ventilating pin ends, and the plurality of ventilating pin ends are connected to the ventilating body.
- the ventilating main body is disposed on the side of the battery core assembly, and at least part of the ventilating pin end is located in the air cavity.
- the upper surface of the breathable body is higher than the upper surface of the sealing member.
- the upper surface of the breathable body is flush with the upper surface of the sealing member.
- a groove is formed on the upper surface of the sealing member, and the upper surface of the breathable main body is flush with the upper surface of the sealing member where the groove is located.
- the ventilation element is made of waterproof and breathable material.
- the thickness of the ventilation element is greater than 0.3 mm and less than 4 mm.
- the elastic pad is provided as a material whose deformation is reversible.
- the elastic pad is configured as a thermally conductive material or includes a thermally conductive component.
- an opening is formed on a side of the elastic pad close to the ventilation element, and the air in the opening communicates with the air in the air cavity.
- the casing includes an upper casing and a lower casing, the sealing member and the lower casing form the sealed cavity, and the cell assembly is arranged in the sealed cavity.
- a separation rib is formed on the inner surface of the lower casing, and the separation rib divides the sealing cavity into a first part, a second part and a middle part.
- first part is located on the side of the sealed cavity close to the rear end of the cell assembly
- second part is located on the side of the sealed cavity close to the front end of the cell assembly.
- the middle portion is disposed opposite to the plurality of air cavities in the up-down direction.
- a battery pack configured to supply power to an electric tool, the battery pack comprising: a casing; a cell assembly, which is arranged in the casing, the cell assembly comprising a plurality of cell units arranged in layers; an elastic pad , the elastic pads are respectively arranged between the adjacent battery core units; an air cavity is formed between the elastic pads and the adjacent battery core units; the sealing member is arranged at least on the battery core components
- the surface of the sealing member and the casing form a sealing cavity; a ventilation element communicates with the air cavity; the ventilation element communicates with the air outside the sealing cavity.
- the ventilating element includes a ventilating body and a plurality of ventilating pin ends, and the plurality of ventilating pin ends are connected to the ventilating body.
- An electric power tool comprising a battery pack for supplying power to the electric power tool, the battery pack comprising: a casing; a battery cell assembly, which is arranged in the casing, and the battery core assembly includes a plurality of stacked arrangement an elastic pad, the elastic pads are respectively arranged between the adjacent battery cells; an air cavity is formed between the elastic pad and the adjacent battery cells; a sealing member, at least The air-permeable element is arranged on the surface of the cell assembly, and the seal and the casing form a sealed cavity; the ventilation element is partially disposed on the side of the cell assembly and extends to a plurality of the air cavities along the first direction inside; the breathable element communicates with the air outside the sealed cavity.
- the ventilating element includes a ventilating body and a plurality of ventilating pin ends, and the plurality of ventilating pin ends are connected to the ventilating body.
- the ventilating main body is disposed on the side of the battery core assembly, and at least part of the ventilating pin end is located in the air cavity.
- a battery pack configured to supply power to an electric tool, the battery pack comprising: a casing; a cell assembly located in the casing, the cell assembly comprising a positive terminal of the cell assembly and a negative terminal of the cell assembly; a battery a pack interface, arranged on the surface of the casing; a battery pack terminal, located in the battery pack interface, the battery pack terminal includes a battery pack charging terminal and a battery pack discharging terminal; the battery pack charging terminal passes through the battery pack
- the charging path of the battery pack is electrically connected to the positive terminal of the battery cell assembly or the negative terminal of the battery core assembly; the discharge terminal of the battery pack is connected to the positive terminal of the battery core assembly or the negative electrode terminal of the battery pack through the discharge path of the battery pack.
- the negative terminal of the core assembly is electrically connected; the protection element is arranged in the charging path and the discharging path at the same time.
- the battery pack further includes a charging connecting piece and a discharging connecting piece, the charging connecting piece is arranged in the charging path, and the discharging connecting piece is arranged in the discharging path.
- the charging connecting piece is electrically connected to the charging terminal of the battery pack through a circuit board.
- the discharge connecting piece is electrically connected to the discharge terminal of the battery pack.
- the front end of the protection element is configured to be electrically connected to the positive terminal of the cell assembly or the negative terminal of the cell assembly.
- the rear end of the protection element is electrically connected to the charging connection piece.
- the rear end of the protection element and the charging connecting piece are electrically connected by wires.
- the protection element is set as one of fuses such as a blade fuse, a wrap fuse, and a patch fuse.
- the charging connecting piece and the discharging connecting piece are made of conductive material.
- the cell assembly includes a plurality of cell units.
- the charging path is different from the discharging path.
- a battery pack configured to supply power to an electric tool
- the battery pack comprising: a casing, including an upper casing and a lower casing; a battery core assembly, arranged in the casing; a support plate, arranged on the upper casing between the body and the lower casing; a circuit board, fixed on the upper surface of the support plate; a terminal assembly, partially fixed on the upper surface of the support plate, the terminal assembly includes: a plurality of battery pack terminals, all of which are
- the battery pack terminal includes a terminal clamping part and a terminal pole piece; a terminal support base is used to fix the battery pack terminal; the terminal assembly further includes a terminal protection device, fixed on the terminal support base, the terminal protection The device is formed with a plurality of accommodating spaces, and the plurality of accommodating spaces are independent of each other.
- a plurality of the battery pack terminals are respectively located in the plurality of the accommodating spaces.
- a gap is provided between the inner surface of the accommodating space and the terminal clamping portion.
- the gap can be adapted to undergo reversible elastic deformation of the terminal clamping portion.
- the terminal protection device is formed with a straight groove extending in the front-rear direction, and the straight groove is disposed opposite to the terminal clamping portion in the up-down direction.
- terminal pole piece and the circuit board are electrically connected through wires.
- the terminal protection device is made of plastic material
- the terminal protection device is made of insulating material.
- the cell assembly includes a plurality of cell units.
- a battery pack configured to supply power to an electric tool, the battery pack comprising: a casing; an electric core assembly, which is arranged in the casing, the electric core assembly comprising a plurality of stacked electric core units; an elastic assembly , the elastic component includes a plurality of elastic pads, and the plurality of the elastic pads are respectively arranged between the adjacent battery core units; a plurality of the elastic pads and the adjacent battery core units are formed with a plurality of elastic pads an air cavity; a sealing member, disposed at least on the surface of the battery core assembly, the sealing member and the casing form a sealing cavity; a ventilation device, partially disposed on the side of the battery core assembly; the ventilation device includes A first element, a second element and a connecting piece, the first element and the second element are fixed by a connecting piece; the connecting piece is connected or formed with a ventilation channel; the ventilation channel is connected with a plurality of the air The cavity is communicated; the ventilation channel is communicated with the air outside the sealed cavity.
- the first element part is disposed on the side surface of the cell assembly.
- the elastic pad is provided as a material whose deformation is reversible.
- the elastic pad is configured as a thermally conductive material or includes a thermally conductive component.
- the cell assembly is arranged in the sealed cavity.
- the sealing member is formed by a gluing process.
- the second element is set to be made of PC material.
- the thickness range of the connecting piece is set to be greater than or equal to 0.05 mm and less than or equal to 1 mm.
- the connector is configured as a back glue.
- a battery pack configured to supply power to an electric tool, the battery pack comprising: a casing; a cell assembly, which is arranged in the casing, the cell assembly including a plurality of stacked cell units; a deformation assembly , the deformation component includes a plurality of deformation elements, and the plurality of deformation elements are respectively arranged between the adjacent cell units; a plurality of the deformation elements and the adjacent cell units are formed with a plurality of an air cavity; a sealing member, at least disposed on the surface of the cell assembly, the sealing member and the casing form a sealed cavity; a ventilation device, partially disposed on the side of the cell assembly; the ventilation device at least It includes a first element and a second element, the first element and the second element are fixed by connecting pieces; at least one ventilation channel is formed or connected on the first element or the second element; the The ventilation channel communicates with the plurality of air cavities or communicates with the plurality of air cavities through the deformation component; the ventilation channel communicates with the air outside the sealing cavity.
- the first element part is disposed on the side surface of the cell assembly.
- the deformation of the deformation element is configured to fit the air cavity.
- the deformation element is configured as a thermally conductive material or includes a thermally conductive component.
- the deformation element is configured as a breathable material.
- the cell assembly is arranged in the sealed cavity.
- the sealing member is formed by a gluing process.
- the first element is set to be MPP material.
- the second element is set to be made of PC material.
- FIG. 1 is a structural diagram of an electric tool as a specific embodiment
- Figure 2 is a structural diagram of a battery pack
- Fig. 3 is an exploded view of the battery pack in Fig. 2;
- Fig. 4 is a partial structure exploded view of the battery pack in Fig. 2;
- FIG. 5 is a structural diagram of the battery pack terminal in FIG. 2;
- FIG. 6 is a structural diagram of a terminal protection device of the battery pack in FIG. 2;
- FIG. 7 is a structural diagram of a protection element of the battery pack in FIG. 2;
- FIG. 8 is another perspective structural diagram of the protection element of the battery pack in FIG. 2;
- Figure 9 is a schematic diagram of the charging path and the discharging path of the battery pack.
- FIG. 10 is a schematic diagram of a charging path and a discharging path of another embodiment of a battery pack
- Figure 11 is a partial exploded view of the battery pack in Figure 2;
- Figure 12 is a structural diagram of a ventilation element
- Figure 13 is a structural diagram of the ventilation element and the battery core assembly
- Figure 14 is a structural diagram of the ventilation element and the seal
- Figure 15 is a sectional view of Figure 14;
- Figure 16 is a partial enlarged view at A in Figure 15;
- Figure 17 is a partial enlarged view corresponding to A in another embodiment
- Fig. 18 is a partial enlarged view corresponding to A in another embodiment
- Figure 19 is a structural diagram of an elastic pad in another embodiment
- FIG. 20 is a structural diagram of a separation rib position in another embodiment
- 21 is an exploded view of the structure of a battery pack according to another embodiment
- FIG. 22 is a structural diagram of a cell assembly and a deformation assembly of the battery pack in FIG. 21;
- Figure 23 is a structural diagram of the cell assembly and the ventilation device
- Figure 24 is a partial enlarged view at A in Figure 23;
- Figure 25 is an exploded view of one embodiment of a venting device
- Figure 26 is a diagram of the air circulation path in the battery pack
- Figure 27 is a structural diagram of another embodiment of the deformation assembly.
- Figure 28 is a partial structural diagram of a ventilation device as another embodiment
- Figure 29 is an exploded view of the structure of the ventilation device in Figure 28;
- Figure 30 is a partial structural diagram of a ventilation device as another embodiment
- Figure 31 is a structural exploded view of the ventilation device in Figure 30;
- Figure 32 is a partial structural diagram of a ventilation device as another embodiment
- FIG. 33 is an exploded view of the structure of the ventilation device in FIG. 32 .
- FIG. 1 shows a power tool 2 and a battery pack 1 that can be adapted to the power tool 2 and supply power to the power tool 2 .
- the power tool 2 is an electric drill, but it should be understood that it can also be applied to hand-held electric tools such as electric wrenches, electric screwdrivers, electric hammer drills, electric circular saws, sanders, etc., and table-type electric power tools such as table saws.
- Tools and outdoor tools such as lawn mowers, lawn trimmers, electric scissors, pruning machines, chainsaws, etc. Obviously, the following embodiments are part of the embodiments of the present application, but not all of the embodiments.
- the battery pack 1 at least includes a casing 11 , a cell assembly 12 and a sealing member 13 .
- the housing 11 includes an upper housing 111 and a lower housing 112 assembled at an interface to form an inner cavity 113 .
- the cell assembly 12 is disposed in the inner cavity 113 formed by the casing 11 .
- the cell assembly 12 further includes a positive terminal 122 of the cell assembly and a negative terminal 123 of the cell assembly, which are used for outputting electrical energy of the cell assembly 12 or inputting electrical energy to charge the cell assembly 12 .
- the battery pack 1 further includes a battery pack interface 16 , which is at least electrically connected to the battery cell assembly 12 .
- the battery pack interface 16 is formed on the upper surface of the upper case 111 .
- the battery pack 1 further includes a support plate 17 , a main circuit board 18 and a terminal assembly 19 .
- the support plate 17 is disposed above the lower case 112 , and the support plate 17 and the lower case 112 form an inner cavity 113 for accommodating the cell assembly 12 .
- the support plate 17 and the upper casing 111 also form an accommodating space (not shown) for accommodating the main circuit board 18, the terminal assembly 19 and other components.
- the support plate 17 has a flat plate-like structure, and the support plate 17 is detachably connected to the lower casing 112 .
- the terminal assembly 19 includes a battery pack charging terminal 191 , a battery pack negative terminal 192 , a battery pack communication terminal 193 , a battery pack discharge terminal 194 and a terminal support base 195 .
- the terminal support base 195 is used for fixing the battery pack charging terminal 191 , the battery pack negative terminal 192 , the battery pack communication terminal 193 and the battery pack discharge terminal 194 to the support plate 17 .
- the battery pack charging terminal 191 is electrically connected to the positive terminal 122 of the cell assembly, and the battery pack charging terminal 191 is located in the battery pack interface 16 .
- the negative terminal 192 of the battery pack is electrically connected to the negative terminal 123 of the cell assembly, and the negative terminal 192 of the battery pack is located in the battery pack interface 16 .
- the battery pack charging terminal 191 and the battery pack negative terminal 193 are configured to cooperate with the positive terminal (not shown) of the charger and the negative terminal (not shown) of the charger to input power to the battery pack 1 .
- the charger further includes a charger communication terminal (not shown) through which the charger is connected to the battery pack communication terminal 193 to communicate with the battery pack 1 .
- the charger converts alternating current into direct current for output, and the electrical energy passes through the positive terminal of the charger, the charging terminal 191 of the battery pack, the positive terminal 122 of the cell assembly, the negative terminal 123 of the cell assembly, and the negative terminal 192 of the battery pack, and returns to the charger
- the negative terminal of the battery pack 1 constitutes a charging circuit of the battery pack 1 , and the charger inputs electrical energy to the cell assembly 12 through the charging circuit.
- the battery pack communication terminal 193 is located in the battery pack interface 16, and is used to communicate with the connected power tool 2 or the charger.
- the terminals of the battery pack 1 are respectively clamped to the terminals of the charger by elastic force from both sides in the left and right directions. Therefore, the terminals of the charger are interfaced by the battery pack during the process of installing the battery pack 1 to the charger. 16 is guided and inserted into the terminals of the battery pack 1 , so that the terminals of the charger are clamped by the terminals of the battery pack 1 , so that the charger and the battery pack 1 are electrically connected.
- the circuit board 18 is fixed on the upper side of the support plate 17 and is connected in series between the cell assembly 12 and the battery pack interface 16 for collecting electrical signals related to the battery pack 1 .
- the circuit board 18 is connected in series between the cell assembly 12 and the battery pack communication terminal 193 for transmitting the information of the battery pack 1 to the power tool 2 attached to the battery pack 1 through the battery pack communication terminal 193 or on the charger.
- the information of the battery pack 1 includes: the charging current of the battery pack 1 , the temperature, voltage, internal resistance value of the battery cell assembly 12 , and the like.
- the battery pack 1 information is detected by the sensor, so the battery pack 1 also includes a detection sensor. The number of detection sensors can be one or more.
- the detection sensor may be a temperature sensor, the temperature sensor is disposed on the surface of the cell assembly 12, and the temperature sensor may specifically be a thermistor.
- the detection sensor may also be a voltage sensor for detecting the voltage of the cell assembly 12 .
- the battery pack 1 further includes a terminal protection device 196 , which is fixed above the terminal support base 195 , and the terminal support base 195 is fixed above the support plate 17 .
- the terminal protection device 196 is provided with an accommodating space 1961a and an accommodating space 1961b, and the accommodating space 1961a and the accommodating space 1961b are independent from each other.
- the battery pack charging terminal 191 and the battery pack communication terminal 193 are respectively disposed in the accommodating spaces 1961 a and 1961 b for protecting the battery pack charging terminal 191 and the battery pack communication terminal 193 .
- the terminal protection device 196 has a symmetrical structure, the battery pack charging terminal 191 and the terminal protection device 196 are used as examples for detailed description here.
- the upper and lower parts of the terminal protection device 196 are respectively provided with straight grooves 1962a and 1962b opposite to the charging terminal clamping portion 191a in the up-down direction, for inserting the positive terminal of the charger into the battery pack charging terminal 191, Provide reserved space in the up and down direction.
- a certain reserved space is provided between the charging terminal clamping portion 191a and the inner side surface of the accommodating space 1961a, which is used to adapt the reversible elastic deformation of the charging terminal clamping portion 191a, and also provide a charging terminal for the battery pack.
- 191 provides cooling space.
- the charging terminal pole piece 191b is located in the accommodating space and placed on the surface of the terminal protection device 196 .
- the charging terminal pole piece 191b is electrically connected to the circuit board 18 through the wire 197 .
- the wires 197 and the charging terminal pole pieces 191b are electrically connected by soldering with tin wires.
- the battery pack charging terminal 191 is installed in the terminal protection device 196 in the front-rear direction, so that the battery pack charging terminal 191 is completely located in the accommodating space 1961a, and the charging terminal pole piece 191b and the wire 197 are electrically connected by welding, thereby realizing Vibration damping and anti-wear effect.
- the terminal protection device 196 is made of insulating material, and optionally, insulating materials such as plastic, ceramic, and rubber can be selected.
- the installation methods of the battery pack communication terminal 193 and the terminal protection device 196 are the same as the above steps, and the description will not be repeated here.
- the present application is not limited to arranging the battery pack charging terminal 191 and the battery pack communication terminal 193 in the same terminal protection device 196, other battery pack terminals can also be encapsulated and protected, and the battery pack charging terminal 191
- the communication terminal 193 with the battery pack is packaged in the accommodating space of the independent terminal protection device.
- the battery pack 1 further includes a protection element 110 , and the protection element 110 is arranged on the discharge path to disconnect the discharge path when the discharge path of the battery pack 1 fails, Thus, the battery pack 1 and the power tool 2 are protected.
- the discharge terminal 194 of the battery pack is connected to the discharge connection piece 140 , the protection element 110 and the positive terminal 122 of the cell assembly in sequence to form a discharge path of the battery pack 10 .
- the discharge terminal 194 of the battery pack is connected to the discharge connection piece 140 , the protection element 110 and the negative terminal 123 of the cell assembly in sequence to form a discharge path of the battery pack 10 .
- the protective element 110 includes a protective element rear end 110b and a protective element front end 110a.
- the rear end 110b of the protection element is electrically connected to the discharge connecting piece 140.
- the front end 110a of the protection element is connected to the positive terminal 122 of the cell assembly.
- the front end 110a of the protection element is electrically connected to the negative terminal 123 of the cell assembly.
- the protection element 110 is configured to be disconnected when the discharge current flowing through the discharge path is greater than or equal to a preset current value to cut off the discharge path, thereby stopping the battery pack 1 from outputting electrical energy to improve the safety of the battery pack 1 .
- the protection element 110 fuses itself to cut off the discharge path when the discharge current abnormally increases to a preset current value.
- the battery pack 1 is a different-port battery pack, and the protection element 110 is arranged in the discharge path and also in the charging path, so as to ensure that after the protection element 110 in the discharge path of the battery pack 1 is disconnected, the protection element 110 cannot
- the battery pack 1 performs a charging operation, and the above-mentioned charging path and the discharging path are not the same path.
- the battery pack charging terminal 191 is connected to the circuit board 18, the charging fuse (not shown in the figure), the charging connecting piece 120, the charging connecting piece lead 130, the protection element 110 and the positive terminal 122 of the cell assembly in sequence, It constitutes the charging path of the battery pack 1 .
- the lead wire 130 of the charging connection piece is connected to the rear end 110b of the protection element.
- the battery pack charging terminal 191 is connected to the circuit board 18 , the charging fuse (not shown in the figure), the charging connecting piece 120 , the charging connecting piece wire 130 , the protection element 110 and the negative terminal 123 of the cell assembly in sequence. , which constitutes the charging path of the battery pack 1 .
- the lead wire 130 of the charging connection piece is connected to the rear end 110b of the protection element.
- the protection element 110 When the protection element 110 is disconnected due to the failure of the discharge path of the battery pack 1, the charging operation cannot be completed due to the disconnection of the protection element 110 in the charging path.
- the protection element 110 may be one of fuses such as a blade fuse, a wrap fuse, a chip fuse, etc., which is not limited herein.
- the charging connection piece 120 and the discharge connection piece 140 are made of materials with good electrical conductivity, which are not limited here.
- the charging fuse is located on the surface of the circuit board 18, and a three-terminal fuse can be selected. When the current value flowing through the charging path is abnormal, the three-terminal fuse is blown due to high temperature, thereby protecting the battery pack 1 and making it no longer perform the charging operation. .
- the battery pack 1 further includes a sealing member 13 and a plurality of elastic pads 14 .
- the cell assembly 12 , the sealing member 13 and the plurality of elastic pads 14 are all arranged in the casing 11 .
- the cell assembly 12 includes a plurality of cell units 121 .
- the cell unit 121 includes a positive electrode 1211 of the cell unit and a negative electrode 1212 of the cell unit, and is used for outputting the electric energy of the cell unit 121 or inputting the electric energy to charge the cell unit 121 .
- a plurality of cell units 121 form the cell assembly 12 in the form of series, parallel or a combination of series and parallel.
- the voltage of a single cell unit 121 is 4.2V.
- the cell unit 121 further includes a cell unit casing (not shown in the figure) for encapsulating the cells to prevent leakage of compounds in the cells.
- the package may be an aluminum-plastic film, but is not limited to the aluminum-plastic film.
- a plurality of battery cell units 121 are sequentially stacked and arranged in an up-down direction.
- the sealing member 13 is partially located on the upper surface of the cell assembly 12 , and the sealing member 13 and the lower case 112 form a sealed cavity (not shown in the figure) for sealing the cell assembly 12 in the lower case of the battery pack 10 112.
- the sealing member 13 is formed by pouring glue. After the cell assembly 12 is put into the lower casing 112, the sealing glue is injected into the lower casing 112 from the upper surface of the cell assembly 12, so as to seal the cell assembly 12 into the lower casing 112. Assembly 12 is sealed in lower housing 112 .
- a plurality of elastic pads 14 are respectively disposed between adjacent cell units 121 , and the elastic pads 14 are disposed opposite to the cell units 121 in the up-down direction.
- the outer dimension of the elastic pad 14 is basically the same as the outer dimension of the cell unit 121.
- the elastic pad 14 is set in a "return" shape, and is made of a material whose deformation is reversible, and at the same time has a good heat conduction effect.
- the elastic pad 14 can be made of sponge material or other materials with good heat dissipation effect.
- the battery pack further includes a ventilation element 15, which is used to balance the air pressure inside and outside the battery pack and have the function of waterproof and dustproof.
- the ventilation element 15 is integrally arranged in the casing 11 of the battery pack.
- the ventilation element 15 communicates with a plurality of air cavities 152 and also communicates with the air outside the sealing cavity (not shown) formed by the sealing member 13 and the lower casing 112 .
- the ventilation element 15 is partially disposed on the side of the cell assembly 12 and located in the plurality of air cavities 152 .
- the ventilating element 15 is provided with a plurality of ventilating pin ends 153, and each ventilating pin end 153 is in contact with the upper surface or the lower surface of the corresponding elastic pad 14, and extends to the corresponding corresponding elastic pad 14 along the first direction.
- the inside of the air cavity 152 is used to realize the air pressure balance inside and outside the sealed cavity formed by the sealing element 13 and the lower casing 112 .
- the ventilating element 15 further includes a ventilating body 151 disposed on the side of the cell assembly 12 , and the ventilating body 151 is connected to a plurality of ventilating pin ends 153 .
- the breathable body 151 is located at least partially in the air outside the sealed cavity.
- FIG. 15 shows a partial cross-sectional view of the battery pack 10 .
- the breathable main body 151 protrudes from the upper surface of the sealing member 13 in the up-down direction. Note that in this embodiment, the height of the upper surface of the ventilating body 151 higher than the upper surface of the sealing member 13 is not limited, which can be selected according to the actual design situation.
- the breathable body 151 is flush with the sealing member 13 in the up-down direction.
- the upper surface of the ventilating main body 151 can be in contact with the air outside the above-mentioned sealed cavity, and the air pressure inside and outside the above-mentioned sealed cavity can also be balanced.
- the upper surface of the sealing member 13 is not in a plane, and the upper surface of the breathable main body 151 is flush with the upper surface of the groove of the sealing member 13.
- the upper surface of the ventilating main body 151 can be in contact with the air outside the above-mentioned sealed cavity, and the air pressure inside and outside the sealed cavity can also be balanced.
- the ventilation pin ends 153 of the ventilation element 15 are fixed to the surfaces of the corresponding plurality of elastic pads 14 through glue, and the breathable main body 151 of the ventilation element 15 is fixed to the battery cell through glue.
- a sealing cavity is formed with the lower casing 112 by pouring glue on the upper surface of the cell assembly 12 to seal the cell assembly 12. in the sealed cavity.
- the ventilation element 15 in this embodiment is not limited to be disposed on the left side of the cell assembly 12 shown in FIG.
- the ventilation element 15 is made of waterproof and breathable paper, which has a waterproof level of IPX7 and has a good ventilation function.
- the ventilating element 15 in this embodiment adopts waterproof and ventilating paper with a thickness ranging from 0.3 mm to 4 mm.
- the air pressure in the sealed cavity increases due to the temperature rise, and the internal and external air pressures are balanced by the ventilating element 15, so as to achieve the internal and external air pressure balance of the sealed cavity in the casing 11 to avoid the occurrence of
- the deformation of the casing 11 due to the high air pressure in the sealed cavity increases the service life of the battery pack 1 and enhances the safety and performance stability of the battery pack 1 .
- the elastic pad 14 Openings are provided on the left or/and right side, that is, a complete "back" font is not formed.
- a plurality of separation rib positions are formed or connected on the inner surface of the lower casing 112 , including a separation rib position 1121 , a separation rib position 1122 , a separation rib position 1123 and a separation rib position 1124.
- the separation rib position 1121 and the separation rib position 1122 are arranged at the rear end of the lower casing 112
- the separation rib position 1123 and the separation rib position 1124 are arranged at the front end of the lower casing 112 .
- the distance between the separation rib position 1121 and the separation rib position 1122 in the front-rear direction is approximately twice the width of the separation rib position 1121 or the separation rib position 1122 .
- the distance between the separation rib position 1123 and the separation rib position 1124 in the front-rear direction is approximately twice the width of the separation rib position 1123 or the separation rib position 1124 .
- the separation rib position 1121 or the separation rib position 1122 is approximately located at one-third of the distance from the rear end of the lower casing 112, and the separation rib position 1123 or the separation rib position 1124 is approximately located at one-third of the distance from the front end of the lower casing 112. place.
- a sealing strip is provided between the separation rib position 1121 and the separation rib position 1122 , and a sealing strip is also set between the separation rib position 1123 and the separation rib position 1124 .
- the sealing strip in this embodiment is set as a sponge strip.
- the separation rib position 1121 , the separation rib position 1122 , the separation rib position 1123 and the separation rib position 1124 are arranged in a U-shape.
- its part on the bottom of the lower casing 112 and its part on the side part of the lower casing 112 are not in the same plane and are staggered from each other, and other separation rib positions
- the setting is also performed according to this method, and will not be described in detail.
- the cell assembly 12 is placed in the inner cavity 113 formed by the casing 11 , and the separation ribs provided on the lower casing 112 are fully in contact with the lower surface and the side surface of the cell assembly 12 .
- the inner cavity 113 loaded into the cell assembly 12 is divided into a first part 1131 , a second part 1133 and a middle part 1132 .
- sealant is injected relative to the upper surfaces of the cell assemblies 12 of the first part 1131 and the second part 1133 in the up-down direction, and the first part 1131 and the second part 1133 are sealed with glue, and the middle part 1132 constitutes an independent Breathable cavity (not shown in the figure).
- the air pressure balance is achieved by the elastic pad 14, so as to realize the air pressure balance between the inside and outside of the sealed cavity formed by the sealing member 13 and the lower case 112, so as to avoid the occurrence of excessive air pressure in the above-mentioned sealed cavity.
- the phenomenon of deformation of the casing 11 due to the high height reduces the cost, simplifies the structure, reduces the amount of glue poured, and reduces the weight of the battery pack 10 .
- the battery pack 2 includes an upper case 211 and a lower case 212 formed with an inner cavity 213 .
- the cell assembly 22 , the sealing member 23 and the deformation assembly 24 are all arranged in the inner cavity 113 .
- the sealing member 23 and the lower casing 212 form a sealed cavity (not shown), and the cell assembly 22 is arranged in the sealed cavity.
- the deformation assembly 24 includes a plurality of deformation elements 241 .
- the deformation elements 241 are respectively disposed between adjacent cell units 221 , and the plurality of deformation elements 41 are disposed opposite to the cell units 221 in the up-down direction.
- the outer dimension of the deformation element 241 is basically the same as the outer dimension of the battery cell unit 221. Since the battery cell unit 221 may expand in volume during high temperature or charging process, in order to provide enough reserved expansion space, it has a relatively large volume.
- the deformation elements 241 can be made of a material with reversible deformation, and at the same time, it has a good heat conduction effect.
- the deformation element 241 can be made of sponge material or other materials with good heat dissipation effect.
- the material of the deformation element is not limited in this application, and magnetic deformation or other deformation methods can also be used to adapt to the air cavity 242 .
- the battery pack 2 Since the battery pack is stored at high temperature or during charging and discharging, the air pressure of the sealed cavity increases with the temperature rise, which squeezes the battery cell unit 221, and the gas pressure squeezes the battery cell unit 221 to move to both sides of the stacking surface. , and finally squeeze the shell to produce deformation.
- the battery pack 2 further includes a ventilation device 25 , and the air pressure inside and outside the sealed cavity can be balanced by arranging the ventilation device 25 .
- the ventilation device 25 is partially disposed on the side of the cell assembly 22 . Specifically, the ventilation device 25 is disposed on the side away from the positive electrode 2211 of the cell unit or the negative electrode 2212 of the cell unit.
- the ventilation device 25 includes a first element 251 , a second element 252 and a connecting piece 253 .
- the first element 251 is disposed on the side of the cell assembly 22 , and the first element 251 is provided with a through hole 2511 along the front-rear direction.
- the boundary is provided below the lower surface of the deformation assembly 24 .
- the first element 251 is adhered to the side surface of the cell assembly 22 by glue.
- the second element 252 is fixed on the first element 251 through the connecting piece 253 .
- the second element 252 is made of polycarbonate (Polycarbonate, PC) material, and the connecting member 253 is set as a back glue.
- At least one ventilation channel 254 is formed on the ventilation device 25 .
- the ventilation channel 254 communicates with the plurality of air cavities 242 and communicates with the air outside the above-mentioned sealed cavity, so as to balance the air pressure inside and outside the sealed cavity of the battery pack 2 .
- the connecting member 253 is provided with a through hole 2531 along the front-rear direction. Specifically, the outer dimension of the through hole 2531 is substantially the same as the outer dimension of the through hole 2511 on the first element 251 .
- the connecting member 253 is provided with a straight groove 2532 above the through hole 2531 in the up-down direction.
- the straight groove 2532 forms a ventilation channel 254 with the first side surface 2512 of the first element 251 and the first side surface 2521 of the second element 252 .
- the direction of the arrow in FIG. 26 is the direction of air flow in the battery pack 2 .
- the air in the air cavity 242 communicates with the ventilation channel 2532 through the deformation element 241, the through hole 2511 of the first element 251, and the through hole 2531 of the connector 253, so as to communicate with the outside of the above-mentioned sealed cavity.
- the air is communicated with each other, and the air pressure inside and outside the sealed cavity of the battery pack 2 is balanced.
- the deformation element 241 can be set as an incomplete "back" shape.
- the deformation element 241 is provided with a cutout 243 on the side connected with the ventilation device 25 .
- the air in the air cavity 242 passes through the incision 243 on the deformation element 241, the through hole 2511 of the first element 251, the through hole 2511 of the connecting piece 253, and then communicates with the air outside the above-mentioned sealed cavity through the ventilation channel 245, thereby realizing the battery pack. 2. Balance of air pressure inside and outside the sealed chamber.
- the thickness of the back glue is optionally set within a range of greater than or equal to 0.05 mm and less than or equal to 1 mm.
- the connector 253 may also be directly disposed on the first element 251 or the second element 252 . During the assembly process of the ventilation device 25, the first element 251 and the second element 252 are directly assembled.
- the deformation element 241 in this embodiment has good air permeability
- the deformation element 241 can also be set to the shape shown in FIG.
- the hole 2511 and the through hole 2531 of the connector 253 communicate with the air outside the sealed cavity through the ventilation channel 254 , so as to achieve the balance of air pressure inside and outside the sealed cavity of the battery pack 2 .
- the ventilation device 35 also has other implementations. Specifically, as shown in FIGS. 28 to 29 , the first element 351 is formed with a through hole 3512 , and the first side surface 522 of the first element 351 is formed with a straight groove 3511 extending in the up-down direction.
- the straight groove 3511 communicates with the through hole 3512 and is located above the through hole 3512 . In this embodiment, the depth of the straight groove 3511 does not exceed the thickness of the first element 351 .
- the straight groove 3511 and the first side surface 3531 of the connecting piece 353 form a ventilation channel 354 .
- the first element 351 is optionally made of modified polypropylene (Modified Propylene Polymer, MPP) material or rubber material, and the thickness of the first element 351 is optional
- MPP Modified Propylene Polymer
- the ground is set within a range of 2 mm or more and 10 mm or less. It should be noted here that the depth and width of the straight groove 3511 can be set according to the specific use environment.
- the first element 351 , the second element 352 and the connecting piece 353 in this embodiment are the same as the installation methods in the above-mentioned embodiments, and will not be repeated here.
- the first element 451 is formed with a first through hole 4512
- the first element 451 is further formed with a second through hole 4511 extending in the up-down direction.
- the second through hole 4511 is located above the first through hole 4512 and communicates with the first through hole 4512 for forming the ventilation channel 454 .
- the second through hole 4511 constitutes the ventilation channel 454 .
- the air in the air cavity passes through the first through hole 4512 of the first element 451, and then communicates with the air outside the above-mentioned sealed cavity through the ventilation channel 454, so as to balance the air pressure inside and outside the sealed cavity of the battery pack.
- the first element 451 is made of MPP material, and the thickness of the first element 451 is set within a range of greater than or equal to 2 mm and less than or equal to 10 mm. It should be noted here that the diameter of the second through hole 4511 is set according to the specific use environment of the battery pack.
- the first element 451 , the second element 3452 and the connecting piece 453 in this embodiment are the same as the installation methods in the above-mentioned embodiments, and will not be repeated here.
- the first element 551 is formed with a first through hole 5511 extending in the front-rear direction
- the connecting member 553 is formed with a second through-hole 5531 extending in the front-rear direction.
- the first through hole 5511 and the second through hole 5531 communicate with each other and have approximately the same size.
- the second member 552 is formed with grooves 5521 provided in the up-down direction.
- the groove 5521 and the front side 5532 of the connecting member 553 form a ventilation channel 554 .
- the second element 552 is made of PC material, and the thickness of the second element 552 is set within a range of greater than or equal to 0.5 mm and less than or equal to 2 mm. It should be noted here that the depth of the groove 5521 can be set according to the specific usage environment of the battery pack.
- the first element 551 , the second element 553 and the connecting piece 552 in this embodiment are the same as the installation methods in the above-mentioned embodiments, and will not be repeated here.
- the ventilation devices in the above exemplary embodiments are higher than the upper surface of the sealing member in the vertical direction of the battery pack. It can be understood that the ventilation device is also arranged to be flush with or lower than the upper surface of the sealing member in the vertical direction. Can communicate with the air outside the sealed cavity in the battery pack.
- the air pressure balance between the inside and outside of the sealed cavity of the battery pack is realized through the ventilation channel on the ventilation device. It is ensured that during the high temperature storage or charging and discharging process of the battery pack, the air pressure of the sealed cavity will not increase significantly with the rise of temperature, which improves the safety performance of the battery pack.
- the structure and assembly process of the ventilation device in the above embodiments are simple, the cost is low, and it is easy to implement.
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Abstract
Description
Claims (61)
- 一种电池包,设置为给电动工具供电,所述电池包包括:壳体;电芯组件,设置在所述壳体内,所述电芯组件包括多个层叠排布的电芯单元;弹性垫,所述弹性垫分别设置在相邻的所述电芯单元之间;所述弹性垫与相邻的所述电芯单元之间形成有空气腔;密封件,至少设置在所述电芯组件的表面,所述密封件与所述壳体形成有一密封腔;透气元件,部分设置于所述电芯组件的侧面,并沿第一方向延伸至多个所述空气腔内;所述透气元件与所述密封腔外的空气连通。
- 根据权利要求1所述的电池包,其中,所述透气元件包括透气主体和多个透气引脚端,多个所述透气引脚端与所述透气主体相连。
- 根据权利要求2所述的电池包,其中,所述透气主体设置于所述电芯组件的侧面,所述透气引脚端的至少部分位于所述空气腔内。
- 根据权利要求3所述的电池包,其中,所述透气主体的上表面高于所述密封件的上表面。
- 根据权利要求3所述的电池包,其中,所述透气主体的上表面与所述密封件的上表面齐平。
- 根据权利要求3所述的电池包,其中,所述密封件的上表面形成有一凹槽,所述透气主体的上表面与所述凹槽所在的所述密封件的上表面齐平。
- 根据权利要求1所述的电池包,其中,所述透气元件由防水透气材质制成。
- 根据权利要求7所述的电池包,其中,所述透气元件的厚度大于0.3mm且小于4mm。
- 根据权利要求1所述的电池包,其中,所述弹性垫设置为形变可逆的材料。
- 根据权利要求9所述的电池包,其中,所述弹性垫设置为导热材料或包含导热部件。
- 根据权利要求10所述的电池包,其中,所述弹性垫的靠近所述透气元件的一侧形成有一开口,所述开口中的空气与所述空气腔中的空气连通。
- 根据权利要求1所述的电池包,其中,所述壳体包括上壳体和下壳体,所述密封件与所述下壳体形成所述密封腔,所述电芯组件设置于所述密封腔内。
- 根据权利要求12所述的电池包,其中,所述下壳体的内表面上形成有分离筋位,所述分离筋位将所述密封腔分割成第一部分、第二部分和中间部分。
- 根据权利要求13所述的电池包,其中,所述第一部分位于所述密封腔的靠近所述电芯组件的后端的一侧,所述第二部分位于所述密封腔的靠近所述电芯组件的前端的一侧。
- 根据权利要求14所述的电池包,其中,所述中间部分在上下方向上与多个所述空气腔相对设置。
- 一种电池包,设置为给电动工具供电,所述电池包包括:壳体;电芯组件,设置在所述壳体内,所述电芯组件包括多个层叠排布的电芯单元;弹性垫,所述弹性垫分别设置在相邻的所述电芯单元之间;所述弹性垫与相邻的所述电芯单元之间形成有空气腔;密封件,至少设置在所述电芯组件的表面,所述密封件与所述壳体形成有 一密封腔;透气元件,所述透气元件与所述空气腔连通;所述透气元件与所述密封腔外的空气连通。
- 根据权利要求16所述的电池包,其中,所述透气元件包括透气主体和多个透气引脚端,多个所述透气引脚端与所述透气主体相连。
- 一种电动工具,包括用于为所述电动工具进行供电的电池包,所述电池包包括:壳体;电芯组件,设置在所述壳体内,所述电芯组件包括多个层叠排布的电芯单元;弹性垫,所述弹性垫分别设置在相邻的所述电芯单元之间;所述弹性垫与相邻的所述电芯单元之间形成有空气腔;密封件,至少设置在所述电芯组件的表面,所述密封件与所述壳体形成有一密封腔;透气元件,部分设置于所述电芯组件的侧面,并沿第一方向延伸至多个所述空气腔内;所述透气元件与所述密封腔外的空气连通。
- 根据权利要求18所述的电动工具,其中,所述透气元件包括透气主体和多个透气引脚端,多个所述透气引脚端与所述透气主体相连。
- 根据权利要求19所述的电动工具,其中,所述透气主体设置于所述电芯组件的侧面,所述透气引脚端的至少部分位于所述空气腔内。
- 一种电池包,设置为给电动工具供电,所述电池包包括:壳体;电芯组件,位于所述壳体内,所述电芯组件包括电芯组件正极端子和电芯 组件负极端子;电池包接口,设置于所述壳体的表面;电池包端子,位于所述电池包接口中,所述电池包端子包括电池包充电端子和电池包放电端子;所述电池包充电端子经过所述电池包的充电路径与所述电芯组件正极端子或所述电芯组件负极端子电性相连;所述电池包放电端子经过所述电池包的放电路径与所述电芯组件正极端子或所述电芯组件负极端子电性相连;保护元件,所述保护元件同时设置于所述充电路径和所述放电路径中。
- 根据权利要求21所述的电池包,还包括充电连接片和放电连接片,所述充电连接片设置于所述充电路径中,所述放电连接片设置于所述放电路径中。
- 根据权利要求22所述的电池包,其中,所述充电连接片通过电路板与所述电池包充电端子电性连接。
- 根据权利要求23所述的电池包,其中,所述放电连接片与所述电池包放电端子电性连接。
- 根据权利要求24所述的电池包,其中,所述保护元件的前端设置为与所述电芯组件正极端子或所述电芯组件的负极端子电性连接。
- 根据权利要求25所述的电池包,其中,所述保护元件的后端与所述充电连接片电性连接。
- 根据权利要求26所述的电池包,其中,所述保护元件的后端与所述充电连接片之间通过导线电性连接。
- 根据权利要求21所述的电池包,其中,所述保护元件设置为插片式保险丝,裹敷式保险丝,贴片式保险丝中的一种。
- 根据权利要求22所述的电池包,其中,所述充电连接片和所述放电连接片为导电材质。
- 根据权利要求21所述的电池包,其中,所述电芯组件包括多个电芯单元。
- 根据权利要求21所述的电池包,其中,所述充电路径与所述放电路径不同。
- 一种电动工具,包括如权利要求书21-31任意一项所述的电池包。
- 一种电池包,设置为给电动工具供电,所述电池包包括:壳体,包括上壳体和下壳体;电芯组件,设置在所述壳体内;支撑板,设置在所述上壳体与所述下壳体之间;电路板,固定在所述支撑板的上表面;端子组件,部分固定于所述支撑板的上表面,所述端子组件包括:多个电池包端子,所述电池包端子包括端子夹持部和端子极片;端子支撑座,用于固定所述电池包端子;所述端子组件还包括,端子保护装置,固定于所述端子支撑座,所述端子保护装置形成有多个容纳空间,多个所述容纳空间之间相互独立。
- 根据权利要求33所述的电池包,其中,多个所述电池包端子分别位于多个所述容纳空间内。
- 根据权利要求34所述的电池包,其中,所述容纳空间的内表面与所述端子夹持部之间设有间隙。
- 根据权利要求35所述的电池包,其中,所述间隙可适配所述端子夹持部发生可逆弹性形变。
- 根据权利要求33所述的电池包,其中,所述端子保护装置形成有沿前后方向延伸的直槽,所述直槽在上下方向上 与所述端子夹持部相对设置。
- 根据权利要求33所述的电池包,其中,所述端子极片与所述电路板之间通过导线实现电性连接。
- 根据权利要求33所述的电池包,其中,所述端子保护装置设置为塑胶材质;所述端子保护装置设置为绝缘材质。
- 根据权利要求33所述的电池包,其中,所述电芯组件包括多个电芯单元。
- 一种电动工具,包括如权利要求书33-40任意一项所述的电池包。
- 一种电池包,设置为给电动工具供电,所述电池包包括:壳体;电芯组件,设置在所述壳体内,所述电芯组件包括多个层叠排布的电芯单元;弹性组件,所述弹性组件包括多个弹性垫,多个所述弹性垫分别设置在相邻的所述电芯单元之间;多个所述弹性垫与相邻的所述电芯单元形成有多个空气腔;密封件,至少设置在所述电芯组件的表面,所述密封件与所述壳体形成有一密封腔;透气装置,部分设置于所述电芯组件的侧面;所述透气装置包括第一元件、第二元件以及连接件,所述第一元件与所述第二元件之间通过连接件固定;所述连接件连接或形成有透气通道;所述透气通道与多个所述空气腔连通;所述透气通道与所述密封腔外空气连通。
- 根据权利要求42所述的电池包,其中,所述第一元件部分设置于所述电芯组件的侧面。
- 根据权利要求42所述的电池包,其中,所述弹性垫设置为形变可逆的材料。
- 根据权利要求42所述的电池包,其中,所述弹性垫设置为导热材料或包含导热部件。
- 根据权利要求42所述的电池包,其中,所述电芯组件设置于所述密封腔内。
- 根据权利要求46所述的电池包,其中,所述密封件通过灌胶工艺形成。
- 根据权利要求42所述的电池包,其中,所述第二元件设置为聚碳酸酯PC材质。
- 根据权利要求48所述的电池包,其中,所述连接件的厚度范围设置为大于或等于0.05mm且小于或等于1mm。
- 根据权利要求49所述的电池包,其中,所述连接件设置为背胶。
- 一种电动工具,包括如权利要求书42-50任意一项所述的电池包。
- 一种电池包,设置为给电动工具供电,所述电池包包括:壳体;电芯组件,设置在所述壳体内,所述电芯组件包括多个层叠排布的电芯单元;形变组件,所述形变组件包括多个形变元件,多个所述形变元件分别设置在相邻的所述电芯单元之间;多个所述形变元件与相邻的所述电芯单元形成有多个空气腔;密封件,至少设置在所述电芯组件的表面,所述密封件与所述壳体形成有一密封腔;透气装置,部分设置于所述电芯组件的侧面;所述透气装置至少包括第一元件、第二元件,所述第一元件与所述第二元件之间通过连接件固定;所述第一元件或所述第二元件上形成或连接有至少一个透气通道;所述透气通道与多个所述空气腔连通或通过所述形变组件与多个所述空气腔连通;所述透气通道与所述密封腔外的空气连通。
- 根据权利要求52所述的电池包,其中,所述第一元件部分设置于所述电芯组件的侧面。
- 根据权利要求52所述的电池包,其中,所述形变元件的形变设置为适配所述空气腔。
- 根据权利要求54所述的电池包,其中,所述形变元件设置为导热材料或包含导热部件。
- 根据权利要求55所述的电池包,其中,所述形变元件设置为透气材料。
- 根据权利要求52所述的电池包,其中,所述电芯组件设置于所述密封腔内。
- 根据权利要求52所述的电池包,其中,所述密封件通过灌胶工艺形成。
- 根据权利要求52所述的电池包,其中,所述第一元件设置为改性聚丙烯MPP材质。
- 根据权利要求59所述的电池包,其中,所述第二元件设置为聚碳酸酯PC材质。
- 一种电动工具,包括如权利要求书52-60任意一项所述的电池包。
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CN105895840A (zh) * | 2015-02-13 | 2016-08-24 | 株式会社牧田 | 电池组 |
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