WO2022198416A1 - 电池包和具有所述电池包的用电装置 - Google Patents

电池包和具有所述电池包的用电装置 Download PDF

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Publication number
WO2022198416A1
WO2022198416A1 PCT/CN2021/082196 CN2021082196W WO2022198416A1 WO 2022198416 A1 WO2022198416 A1 WO 2022198416A1 CN 2021082196 W CN2021082196 W CN 2021082196W WO 2022198416 A1 WO2022198416 A1 WO 2022198416A1
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WIPO (PCT)
Prior art keywords
tab
battery pack
electrode assembly
circuit board
slot
Prior art date
Application number
PCT/CN2021/082196
Other languages
English (en)
French (fr)
Inventor
严坤
张惟栋
丁宇
刘道林
Original Assignee
宁德新能源科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德新能源科技有限公司 filed Critical 宁德新能源科技有限公司
Priority to EP21932048.8A priority Critical patent/EP4310999A1/en
Priority to CN202180003659.0A priority patent/CN114008842A/zh
Priority to PCT/CN2021/082196 priority patent/WO2022198416A1/zh
Publication of WO2022198416A1 publication Critical patent/WO2022198416A1/zh
Priority to US18/470,529 priority patent/US20240006690A1/en

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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
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/112—Monobloc comprising multiple compartments
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
    • H01M50/258—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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • 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
    • 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
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • 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
    • 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
    • H01M50/512—Connection only in parallel
    • 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
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • 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
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • 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
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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 the technical field of energy storage, and in particular, to a battery pack and an electrical device having the battery pack.
  • batteries such as lithium-ion batteries
  • electric devices such as electric bicycles and electric vehicles.
  • a single battery is usually assembled into a battery pack.
  • the present application provides a battery pack including a case, a circuit board and a plurality of electrode assemblies.
  • the housing includes opposing first and second surfaces, the first surface having a plurality of first slots.
  • the battery pack further includes a plurality of first cover bodies, and the plurality of first cover bodies cover the plurality of first slots respectively to form a plurality of mutually separated accommodating spaces.
  • the electrode assembly includes a pole piece assembly, a first tab, and a second tab. The pole piece assembly is accommodated in the accommodating space, the first tab and the second tab protrude out of the accommodating space, and at least one first tab and at least one second tab in the plurality of electrode assemblies are electrically connected to the circuit board.
  • the first tabs and the second tabs in the plurality of electrode assemblies are both electrically connected to the circuit board, so that monitoring of each electrode assembly can be implemented.
  • the first slot includes a main body portion and two connecting portions.
  • the pole piece assembly is accommodated in the main body.
  • the first tab and the second tab are respectively accommodated in the two connecting parts, and extend out of the accommodating space from the connecting parts. Providing the connecting portion facilitates the positioning of the first tab and the second tab within the first slot.
  • the first groove forms an opening in the first surface.
  • the first cover body covers the opening.
  • a seal is provided between the first cover and the opening. The seal is used to seal the gap between the first cover and the opening, that is, to seal a single accommodating space and prevent the electrolyte from flowing out of the accommodating space.
  • the second surface is provided with a second groove.
  • the second slot is not in communication with the first slot.
  • a cooling medium is arranged in the second slot. The cooling medium is used to cool the electrode assembly to achieve the purpose of cooling.
  • the battery pack further includes a second cover body, and the second cover body covers the casing.
  • the circuit board is located between the second cover and the casing.
  • the second cover can protect the internal structure of the battery pack.
  • the first tab of one electrode assembly is electrically connected to the second tab of another electrode assembly to form a series electrode assembly group.
  • the first tab of one electrode assembly is electrically connected to the first tab of another electrode assembly, and the second tab of one electrode assembly is electrically connected to the second tab of the other electrode assembly to A parallel electrode assembly group is formed.
  • the first tab is a negative tab
  • the second tab is a positive tab
  • the battery pack further includes a conductive tab
  • the conductive tab includes a first conductive portion and a second conductive portion that are connected to each other.
  • the first conductive portion is connected to the first tab and/or the second tab, and the second conductive portion is electrically connected to the circuit board.
  • the conductive tabs can be used as series and/or parallel ports of the electrode assembly to be electrically connected to the circuit board, so that the circuit board can be used to collect electrical signals of the electrode assembly.
  • the length of the first tab protruding from the accommodating space is greater than the length of the second tab protruding from the accommodating space, and at least one first tab is welded and connected to the circuit board.
  • the circuit board is fixed to the first surface to prevent the circuit board from moving over the first surface.
  • the present application also provides an electrical device including the above battery pack.
  • the casing of the present application not only serves as the casing of the entire battery pack, but also serves as the casing of a single electrode assembly.
  • the pole piece assembly is arranged in the first slot provided in the casing. Therefore, the present application avoids the need to package each electrode assembly separately.
  • the whole process of encapsulation is performed in sections, which is beneficial to simplify the structure and process of the battery pack and reduce the cost.
  • the accommodating spaces for accommodating different electrode assemblies are separated from each other and sealed, so the electrolyte will not flow between the plurality of accommodating spaces, reducing short-circuit ignition among the plurality of electrode assemblies risk.
  • FIG. 1 is a schematic diagram of the overall structure of a battery pack according to an embodiment of the present application.
  • FIG. 2 is a partial exploded view of the battery shown in FIG. 1 with the second cover removed in some embodiments.
  • FIG. 3 is a partial exploded view of the battery shown in FIG. 2 with the circuit board removed.
  • FIG. 4 is a partial exploded view of a single electrode assembly in the battery shown in FIG. 3 .
  • FIG. 5 is a schematic diagram of the battery shown in FIG. 3 after the first cover is closed.
  • FIG. 6 is a schematic diagram of the battery shown in FIG. 3 after removing the first cover.
  • FIG. 7 is a partial enlarged view of the battery shown in FIG. 2 .
  • FIG. 8 is another partial enlarged view of the battery shown in FIG. 2 .
  • FIG. 9 is a schematic structural diagram of the battery shown in FIG. 1 from another angle.
  • FIG. 10 is a partial exploded view of the battery shown in FIG. 1 after removing the second cover in other embodiments.
  • FIG. 11 is a partial enlarged view of the battery shown in FIG. 10 .
  • FIG. 12 is another partial enlarged view of the battery shown in FIG. 10 .
  • FIG. 13 is a schematic structural diagram of an electrical device according to an embodiment of the present application.
  • an embodiment of the present application provides a battery pack 100 , which includes a casing 10 , a circuit board 20 and a plurality of electrode assemblies 30 .
  • the housing 10 may be substantially in the form of a rectangular parallelepiped, including opposing first surfaces 11 and second surfaces 12 .
  • the circuit board 20 is disposed on the first surface 11 .
  • the circuit board 20 may be fixed to the first surface 11 by fasteners (eg, screws or bolts), so that the position of the circuit board 20 is fixed and the circuit board 20 is prevented from moving over the first surface 11 .
  • the first surface 11 is provided with a plurality of first slots 110 , and the first slots 110 do not penetrate through the second surface 12 .
  • the way of forming the first slot 110 can be integrally formed by injection molding, or formed by digging the first surface 11 of the housing 10.
  • the housing 10 is integrally formed by resin injection molding, which has a simple structure and good sealing performance.
  • the shape of the slot 110 is easy to control, which is beneficial to automated production and improves efficiency.
  • the plurality of first slots 110 are arranged at intervals. As shown in the figure, the plurality of first slots 110 are divided into two rows and distributed on the first surface 11 , the distances between the adjacent first slots 110 in each row are the same, and the adjacent first slots 110 in different rows are the same.
  • the spacing between the grooves 110 is also the same. It can be understood that the arrangement and quantity of the first slots 110 can also be changed, which is not limited in this application.
  • the battery pack 100 further includes a plurality of first cover bodies 40 , and the plurality of first cover bodies 40 are respectively covered with the plurality of first slots 110 to form a plurality of spaced-apart accommodation Space 111 (marked in Figure 6).
  • the first cover body 40 may be a circular structure with two openings on its surface, and the first tab 32 and the second tab 33 may respectively pass through the two openings to extend out of the accommodating space 111 , and The electrode lugs can be conveniently positioned to reduce the shaking of the electrode assembly 30 in the accommodating space during the assembly process.
  • the first cover body 40 may also include a chamfered structure.
  • the chamfered edge and the inner wall of the first slot 110 form an opening to facilitate fixing and extending the tab.
  • the first tab 32 and the second tab 33 can be placed on the first Opposite edges of a slot 110 protrude to facilitate connection between the tabs.
  • the case 10 can be made of insulating material.
  • the electrode assembly 30 includes a pole piece assembly 31 , a first tab 32 and a second tab 33 .
  • the pole piece assembly 31 includes a first pole piece, a second pole piece, and a diaphragm disposed between the first pole piece and the second pole piece. The diaphragm is used to prevent the first pole piece and the second pole piece from being short-circuited by direct contact.
  • the pole piece assembly 31 can be obtained by stacking and winding the first pole piece, the separator and the second pole piece in sequence, that is, the electrode assembly 30 is a wound electrode assembly.
  • the pole piece assembly 31 is accommodated in the accommodating space 111 , the first pole lug 32 and the second pole lug 33 are electrically connected to the pole piece assembly 31 , and the first pole lug 32 and the second pole lug 33 further extend out of the accommodating space 111 .
  • At least one first tab 32 and at least one second tab 33 in each electrode assembly 30 are electrically connected to the circuit board 20 . Therefore, the polarity of the pole piece assembly 31 can be conducted to the circuit board 20 through the first tab 32 and the second tab 33 .
  • the first pole piece includes a first current collector and a first active material layer disposed on the first current collector.
  • the second pole piece includes a second current collector and a second active material layer disposed on the second current collector.
  • the first tab 32 and the second tab 33 are electrically connected to the first current collector and the second current collector, respectively.
  • the pole piece assembly 31 is a cylindrical full-pole-tab winding structure, that is, the first current collector and the second current collector leave blank foils at opposite ends of the winding structure, respectively, and are wound to form a pole piece.
  • the blank foils at both ends of the pole sheet assembly 31 are rubbed flat, and then the collector discs are welded on the rubbed planes of the blank foil to form the first tab 32 and the second tab 33 .
  • the first tab 32 is a negative tab, and its material is not limited to copper or nickel.
  • the second tab 33 is a positive tab, and its material can be, but not limited to, aluminum or nickel.
  • the battery pack 100 also includes an electrolyte (not shown).
  • the electrolyte is arranged in the accommodating space 111 and fully infiltrates the first pole piece, the second pole piece and the diaphragm, so as to realize ion conduction.
  • the electrolyte can be in direct contact with the inner wall of the casing 10.
  • the casing 10 and the first cover 40 can also be made of insulating materials that are resistant to corrosion by the electrolyte, such as liquid crystal polymer (LCP). ), polyethylene terephthalate (PET), polyvinyl chloride (PVC) or polypropylene (PP) and other organic polymer materials.
  • LCP liquid crystal polymer
  • PET polyethylene terephthalate
  • PVC polyvinyl chloride
  • PP polypropylene
  • the battery pack 100 further includes a second cover 50 , and the second cover 50 covers the casing 10 .
  • the circuit board 20 is located between the second cover 50 and the case 10 . Therefore, the second cover body 50 can protect the internal structure of the battery pack 100 (eg, the circuit board 20 , etc.).
  • the case 10 not only serves as the outer shell of the entire battery pack 100 , but also serves as the outer shell of a single electrode assembly 30 . Therefore, the present application reduces the segmented processing process of packaging each electrode assembly 30 separately and then encapsulating the whole electrode assembly 30 , which is beneficial to simplify the structure and manufacturing process of the battery pack 100 and reduce the cost. Moreover, in the present application, the accommodating spaces 111 for accommodating different electrode assemblies 30 are separated from each other and sealed, so the electrolyte will not flow between the plurality of accommodating spaces 111 , reducing the number of electrode assemblies 30 . short-circuit fire risk.
  • the first slot 110 includes a main body portion 1101 and two connecting portions 1102 connected to the inner wall of the main body portion 1101 .
  • the main body portion 1101 matches the shape of the pole piece assembly 31 and is a hollow cylindrical shape; the connecting portion 1102 is a rectangular groove provided on the inner wall of the hollow cylindrical shape.
  • the pole piece assembly 31 is accommodated in the main body portion 1101 .
  • the first tab 32 and the second tab 33 are respectively accommodated in the two connecting portions 1102 , and extend out of the accommodating space 111 from the connecting portions 1102 to be electrically connected to the circuit board 20 . Therefore, providing the connecting portion 1102 facilitates the positioning of the first tab 32 and the second tab 33 in the first slot 110 .
  • the first slot 110 forms an opening 112 on the first surface 11
  • the first cover 40 covers the opening 112 , thereby forming an accommodating space 111 .
  • the first cover 40 may be fixed to the opening 112 by ultrasonic welding.
  • a sealing member 41 is provided between the first cover body 40 and the opening 112, and the sealing member 41 is used to seal the gap between the first cover body 40 and the opening 112, that is, to realize the sealing of the single accommodating space 111 and prevent the electrolyte from flowing out of the container.
  • the material of the sealing member 41 may be a polyolefin-based adhesive.
  • the second surface 12 is recessed toward the first surface 11 to form a plurality of second grooves 120 , and the second grooves 120 do not penetrate through the first surface 11 .
  • the second slot 120 is not communicated with the first slot 110 , that is, the second slot 120 and the first slot 110 do not have a channel communicating with each other in the housing 10 .
  • the second slot 120 is filled with a cooling medium, and the cooling medium is used to cool the electrode assembly 30 so as to achieve the purpose of cooling.
  • the cooling medium can be R22, R410a, R32 and the like.
  • a cooling member in order to have a better heat dissipation effect, may also be provided, the cooling member is provided with a column body and a base body, the column body is located on the surface of the base body, a plurality of column bodies may be arranged at intervals, and the column body may be provided with Cooling medium, wherein the cylinder can be arranged in the second slot 120, so that the heat can be dissipated through the cylinder to achieve better heat dissipation effect, and at the same time, it has a positioning function when installing the battery pack, which is convenient for installation and replacement.
  • a plurality of electrode assemblies 30 are connected in series with each other, that is, the first tab 32 of one electrode assembly 30 is electrically connected to the other electrode assembly 30 .
  • the second tab 33 forms a series electrode assembly group.
  • the first tab 32 of one electrode assembly 30 and the second tab 33 of the other electrode assembly 30 may be electrically connected by ultrasonic or laser welding.
  • the electrode assemblies 30 are also distributed in two rows correspondingly. It is defined that the housing 10 has a starting end A and an end B along the arrangement direction of each row of electrode assemblies 30, respectively.
  • the first tab 32 of one electrode assembly 30 is electrically connected to the second tab 33 of the other electrode assembly 30, so that the two electrode assemblies 30 are connected in series with each other.
  • the first tab 32 of one electrode assembly 30 and the second tab 33 of the other electrode assembly 30 are both connected to the circuit board 20 of the conductive terminals 21, so that the two electrode assemblies 30 are also connected in series with each other, so that the series connection between the electrode assemblies 30 in different rows is realized.
  • FIG. 7 shows that the first tab 32 of one electrode assembly 30 and the second tab 33 of the other electrode assembly 30 are both connected to the circuit board 20 of the conductive terminals 21, so that the two electrode assemblies 30 are also connected in series with each other, so that the series connection between the electrode assemblies 30 in different rows is realized.
  • the first tabs 32 of the electrode assemblies 30 adjacent to the end B in the first row are connected to the first conductive tabs 60 as the total negative output N, while the electrodes adjacent to the end B in the second row
  • the second tab 33 of the assembly 30 is used as the total positive output electrode P, so that the electrical properties of all the electrode assemblies 30 are aggregated and led out through the total positive output electrode P and the total negative output electrode N.
  • the first conductive tab 60 can also be used as a serial port of each electrode assembly 30 to be electrically connected to the circuit board 20 , so that the circuit board 20 can be used to collect the electrical power of each electrode assembly 30 .
  • Signals (such as voltage, current, etc.).
  • the first conductive tab 60 includes a first conductive portion 61 and a second conductive portion 62 connected to each other, and the first conductive portion 61 and the second conductive portion 62 may be perpendicular to each other.
  • the first conductive portion 61 is connected to the first tab 32 and/or the second tab 33 that are electrically connected to each other, and the second conductive portion 62 is electrically connected to the conductive terminals 21 provided on the circuit board 20 .
  • the first conductive portion 61 can be fixed by welding with the first tab 32 and/or the second tab 33 connected to each other, and the second conductive portion 62 can be fixed by welding with the conductive terminals 21 on the circuit board 20 .
  • the first conductive tabs 60 may include copper sheets.
  • a partial area of the first tab 32 and/or the second tab 33 and/or the first conductive tab 60 may be located on the surface of the first cover 40 , that is, the first cover 40 can connect to the first tab 32 , the second tab 33 and the first conductive tab 60 play a supporting role, restrain the shaking of the connection part during manufacture and use, and reduce the risk of connection failure.
  • the length of the first tab 32 extending out of the accommodating space 111 is greater than the length of the second tab 33 extending out of the accommodating space 111 . Since the first tabs 32 are relatively long, the first tabs 32 can be configured to be directly electrically connected to the circuit board 20 , and at the same time, it is also convenient for the first tabs 32 between adjacent electrode assemblies 30 to be directly connected to the second tabs 33 . , thereby reducing the use of metal connectors, simplifying the manufacturing process and reducing manufacturing costs. Specifically, as shown in FIG.
  • the first tabs 32 of the electrode assemblies 30 in the first row adjacent to the starting end A are electrically connected to the conductive terminals 21 on the circuit board 20
  • the electrode assemblies 30 in the second row adjacent to the starting end A are electrically connected.
  • the second tabs 33 are also electrically connected to the conductive terminals 21 on the circuit board 20 by soldering the second conductive tabs 63 (eg, copper sheets), thereby realizing series connection between different rows of electrode assemblies 30 .
  • the second conductive tabs 63 eg, copper sheets
  • the first tabs 32 of the electrode assemblies 30 in the first row adjacent to the end B are used as the total negative output pole N
  • the second tabs 33 of the electrode assemblies 30 in the second row adjacent to the end B are welded to the second
  • the conductive tabs 63 serve as the total positive output pole P, and all the second conductive tabs 63 can be electrically connected to the circuit board 20 as serial ports of each electrode assembly 30 .
  • multiple electrode assemblies 30 may also be connected in parallel with each other, which is not limited. That is, the first tab 32 of one electrode assembly 30 is electrically connected to the first tab 32 of the other electrode assembly 30 , and the second tab 33 of one electrode assembly 30 is electrically connected to the second tab 30 of the other electrode assembly 30 33 to form a parallel electrode assembly group.
  • the electrode assembly 30 of the present application may be a lithium secondary battery, including a lithium metal secondary battery, a lithium ion secondary battery, a lithium polymer secondary battery, and a lithium ion polymer secondary battery. In other embodiments, the electrode assembly 30 may be any kind of primary battery or secondary battery.
  • the present application further provides an electrical device 1 , and the electrical device 1 includes the above-mentioned battery pack 100 .
  • the electrical device 1 of the present application may be, but not limited to, an automobile, a motorcycle, a power-assisted bicycle, a bicycle, and the like.

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  • Connection Of Batteries Or Terminals (AREA)
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Abstract

一种电池包(100)，包括壳体(10)、电路板(20)和多个电极组件(30)。壳体(10)包括相对的第一表面(11)和第二表面(12)，电路板(20)设置于第一表面(11)，第一表面(11)朝向第二表面(12)凹陷形成多个第一开槽(110)。电池包(100)还包括多个第一盖体(40)，多个第一盖体(40)分别盖于多个第一开槽(110)以形成多个相互隔开的容置空间(111)。电极组件(30)包括极片组件(31)、第一极耳(32)和第二极耳(33)。极片组件(31)收容于容置空间(111)，第一极耳(32)和第二极耳(33)伸出容置空间(111)，多个电极组件(30)中的至少一个第一极耳(32)和至少一个所述第二极耳(33)电连接于电路板(20)。本申请还提供一种具有上述电池包(100)的用电装置(1)。本申请可以简化电池包结构和制程，降低成本。

Description

电池包和具有所述电池包的用电装置 技术领域
本申请涉及储能技术领域，尤其涉及一种电池包和具有所述电池包的用电装置。
背景技术
随着电池技术的发展，电池(如锂离子电池)在电动自行车和电动汽车等用电设备中得到广泛应用。作为用电设备的动力来源，为了获得大容量及大功率，通常是将单个电池组装成电池包。
现有技术中，通常将单个电池分别封装后再整体进行封装，这造成了电池包本身结构复杂，工艺流程较长的问题，且提高了电池包的制造成本。
发明内容
有鉴于此，有必要提供一种能够简化制程、降低制造成本的电池包。
另外，还有必要提供一种具有如上电池的用电装置。
本申请提供一种电池包，包括壳体、电路板和多个电极组件。壳体包括相对的第一表面和第二表面，第一表面设有多个第一开槽。电池包还包括多个第一盖体，多个第一盖体分别盖于多个第一开槽以形成多个相互隔开的容置空间。电极组件包括极片组件、第一极耳和第二极耳。极片组件收容于容置空间，第一极耳和第二极耳伸出容置空间，多个电极组件中的至少一个第一极耳和至少一个第二极耳电连接于电路板。
在一些可能的实现方式中，多个电极组件中的第一极耳和第二极耳均电连接于电路板，从而可实现对各个电极组件的监控。
在一些可能的实现方式中，第一开槽包括主体部和两个连接部。极片组件容置于主体部。第一极耳和第二极耳分别容置于两个连接部，并自连接部伸出容置空间。设置连接部便于第一极耳和第二极耳定位于第一开槽内。
在一些可能的实现方式中，第一开槽在第一表面形成开口。第一盖体盖于开口。第一盖体和开口之间设有密封件。密封件用于密封第一盖体和开口之间的间隙，即实现单个容置空间的密封，防止电解液流出容置空间。
在一些可能的实现方式中，第二表面设有第二开槽。第二开槽与第一开槽不连通。第 二开槽内设有冷却介质。冷却介质用于冷却电极组件，实现降温的目的。
在一些可能的实现方式中，电池包还包括第二盖体，第二盖体盖于壳体。电路板位于第二盖体和壳体之间。第二盖体可对电池包的内部结构进行保护。
在一些可能的实现方式中，一电极组件的第一极耳电连接于另一电极组件的第二极耳以形成串联电极组件组。
在一些可能的实现方式中，一电极组件的第一极耳电连接于另一电极组件的第一极耳、一电极组件的第二极耳电连接于另一电极组件的第二极耳以形成并联电极组件组。
在一些可能的实现方式中，第一极耳为负极极耳，第二极耳为正极极耳。
在一些可能的实现方式中，电池包还包括导电接片，导电接片包括相连接的第一导电部和第二导电部。第一导电部连接于第一极耳和/或第二极耳，第二导电部电连接于电路板。导电接片可作为电极组件的串联和/或并联端口与电路板电连接，使得电路板可用于采集电极组件的电信号。
在一些可能的实现方式中，第一极耳伸出容置空间的长度大于第二极耳伸出容置空间的长度，至少一个第一极耳焊接连接于电路板。
在一些可能的实现方式中，电路板固定于第一表面，防止电路板在第一表面上方移动。
本申请还提供一种用电装置，包括如上电池包。
本申请的壳体不仅作为整个电池包的外壳，同时也作为单个电极组件的外壳，极片组件设置于壳体所设置的第一开槽内，因此本申请避免了将各个电极组件分别封装后再整体进行封装的分段加工过程，有利于简化电池包结构和制程，降低成本。而且，本申请中用于容置不同电极组件的容置空间之间相互隔开且密封，因此电解液不会在多个容置空间之间流动，减少了多个电极组件之间的短路起火风险。
附图说明
图1为本申请一实施方式的电池包的整体结构示意图。
图2为一些实施例中图1所示的电池去掉第二盖体后的局部分解图。
图3为图2所示的电池去掉电路板后的局部分解图。
图4为图3所示的电池中单个电极组件的局部分解图。
图5为图3所示的电池在第一盖体盖合后的示意图。
图6为图3所示的电池在移除第一盖体后的示意图。
图7为图2所示的电池的局部放大图。
图8为图2所示的电池的另一局部放大图。
图9为图1所示的电池的另一角度的结构示意图。
图10为另一些实施例中图1所示的电池去掉第二盖体后的局部分解图。
图11为图10所示的电池的局部放大图。
图12为图10所示的电池的另一局部放大图。
图13为本申请一实施方式的用电装置的结构示意图。
主要元件符号说明
用电装置           1
壳体               10
第一表面           11
第二表面           12
电路板             20
导电端子           21
电极组件           30
极片组件           31
第一极耳           32
第二极耳           33
第一盖体           40
密封件             41
第二盖体           50
导电接片           60
第一导电部         61
第二导电部         62
第二导电接片       63
电池包             100
第一开槽           110
容置空间           111
开口               112
第二开槽           120
主体部              1101
连接部              1102
起始端              A
末端                B
总负输出极          N
总正输出极          P
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请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为本申请一部分实施例，而不是全部的实施例。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施方式及实施方式中的特征可以相互组合。
请参阅图1和图2，本申请一实施方式提供一种电池包100，包括壳体10、电路板20和多个电极组件30。壳体10可大致为长方体结构，包括相对的第一表面11和第二表面12。电路板20设置于第一表面11。在一些实施例中，电路板20可通过紧固件(如螺钉或螺栓)固定于第一表面11，使得电路板20的位置得以固定，防止电路板20在第一表面11上方移动。
请参照图3，第一表面11设有多个第一开槽110，第一开槽110未贯穿第二表面12。形成第一开槽110的方式，可以通过注塑一体成型，也可以通过在壳体10的第一表面11挖设形成，例如壳体10通过树脂注塑一体成型，结构简单，密封性好，第一开槽110形状易于控制，有利于自动化生产，提高效率。多个第一开槽110间隔设置。如图所示，多个第一开槽110分为两排分布于第一表面11，每一排中相邻的第一开槽110之间的间距相同，不同排中相邻的第一开槽110之间的间距也相同。可以理解，第一开槽110的排列方式和数量也可以作变更，本申请并不作限制。
请一并参阅图3和图5，电池包100还包括多个第一盖体40，多个第一盖体40分别盖于多个第一开槽110以形成多个相互隔开的容置空间111(在图6中标出)。其中，第 一盖体40可以是圆形结构，其表面设有两个开口，第一极耳32和第二极耳33可分别从两个开口穿过，从而伸出容置空间111，且可以方便地将极耳定位，降低组装过程中电极组件30在容置空间中的晃动。另外，第一盖体40也可以包括切角结构，其盖于第一开槽110后，其切角边与第一开槽110的内壁形成开口，以便于固定和伸出极耳。通过将第一盖体40表面的开口设置在相对的两侧边缘，或者将切角设置在第一盖体40相对的两侧，从而可将第一极耳32和第二极耳33在第一开槽110相对的边缘伸出，便于极耳之间的连接。另外，为防止不同电极组件30之间短接，壳体10可采用绝缘材料制成。
请一并参照图3和4，电极组件30包括极片组件31、第一极耳32和第二极耳33。极片组件31包括第一极片、第二极片以及设置于第一极片和第二极片之间的隔膜。隔膜用于防止第一极片和第二极片直接接触而短路。极片组件31可由第一极片、隔膜和第二极片经依次层叠卷绕后得到，即电极组件30为卷绕电极组件。极片组件31收容于容置空间111，第一极耳32和第二极耳33电连接于极片组件31，第一极耳32和第二极耳33进一步伸出容置空间111，多个电极组件30中的至少一个第一极耳32和至少一个第二极耳33电连接于电路板20。因此，极片组件31的极性可通过第一极耳32和第二极耳33传导至电路板20。具体地，第一极片包括第一集流体和设置于第一集流体上的第一活性物质层。第二极片包括第二集流体和设置于第二集流体上的第二活性物质层。第一极耳32和第二极耳33分别电连接于第一集流体和第二集流体。
在一些实施例中，极片组件31为圆柱形的全极耳卷绕结构，即第一集流体和第二集流体分别在卷绕结构相对的两端留出空白箔材，卷绕形成极片组件31后，将极片组件31两端的空白箔材揉平，然后在空白箔材的揉平面上分别焊接集流盘，形成第一极耳32和第二极耳33。其中，第一极耳32为负极极耳，其材质并不限于铜或镍。第二极耳33为正极极耳，其材质可以为，但并不限于铝或镍。
电池包100还包括电解液(图未示)。电解液设于容置空间111内且充分浸润第一极片、第二极片和隔膜，用于实现离子传导。其中，电解液可与壳体10的内壁直接接触，为防止电解液腐蚀，壳体10和第一盖体40还可采用耐电解液腐蚀的绝缘材料制成，如液晶高分子聚合物(LCP)、聚对苯二甲酸乙二醇酯(PET)、聚氯乙烯(PVC)或聚丙烯(PP)等有机高分子材料。
如图1所示，在一些实施例中，电池包100还包括第二盖体50，第二盖体50盖于壳体10。电路板20位于第二盖体50和壳体10之间。因此，第二盖体50可对电池包100的内部结构(如电路板20等)进行保护。
因此在本申请中，壳体10不仅作为整个电池包100的外壳，同时也作为单个电极组件30的外壳，极片组件31和电解液设置于壳体10所设置的第一开槽110内。因此，本申请减少了将各个电极组件30分别封装后再整体进行封装的分段加工过程，有利于简化电池包100结构和制程，降低成本。而且，本申请中用于容置不同电极组件30的容置空间111之间相互隔开且密封，因此电解液不会在多个容置空间111之间流动，减少了多个电极组件30之间的短路起火风险。
请一并参阅图4和图6，在一些实施例中，第一开槽110包括主体部1101和连接于主体部1101内壁的两个连接部1102。主体部1101与极片组件31形状匹配，为中空的圆柱形；连接部1102为设于中空圆柱形内壁的矩形槽。极片组件31容置于主体部1101。第一极耳32和第二极耳33分别容置于两个连接部1102，并自连接部1102伸出容置空间111以电连接于电路板20。因此，设置连接部1102便于第一极耳32和第二极耳33定位于第一开槽110内。
如图5和图6所示，在一些实施例中，第一开槽110在第一表面11形成开口112，第一盖体40盖于开口112，从而形成容置空间111。其中，第一盖体40可通过超声焊接的方式固定于开口112。第一盖体40和开口112之间设有密封件41，密封件41用于密封第一盖体40和开口112之间的间隙，即实现单个容置空间111的密封，防止电解液流出容置空间111。密封件41的材质可以为聚烯烃类胶粘剂。
如图9所示，在一些实施例中，第二表面12朝向第一表面11凹陷形成多个第二开槽120，第二开槽120未贯穿第一表面11。第二开槽120与第一开槽110不连通，即第二开槽120与第一开槽110在壳体10内没有相互连通的通道。第二开槽120内填充有冷却介质，冷却介质用于冷却电极组件30，从而实现降温的目的。其中，冷却介质可以为R22、R410a、R32等。在一些实施例中，为了具有更好的散热效果，也可以设置冷却件，该冷却件设有柱体和基体，柱***于基体表面，多个柱体可间隔设置，柱体中可以设有冷却介质，其中，柱体可设置在第二开槽120中，从而通过柱体将热量导出，实现更好的散热效果，同时，在安装电池包的时候具有定位功能，便于安装和更换。
请一并参照图2、图7和图8，在一些实施例中，多个电极组件30之间相互串联，即，一电极组件30的第一极耳32电连接于另一电极组件30的第二极耳33以形成串联电极组件组。其中，一电极组件30的第一极耳32与另一电极组件30的第二极耳33之间可通过超声波或激光焊接实现电连接。具体地，如图所示，当第一开槽110在第一表面11上呈两排分布时，电极组件30也对应呈两排分布。定义壳体10沿每一排电极组件30的排列 方向分别具有起始端A和末端B。同一排中相邻的两个电极组件30中，一电极组件30的第一极耳32电连接于另一电极组件30的第二极耳33，使得两个电极组件30之间相互串联。如图7所示，两排电极组件30临近起始端A的两个电极组件30中，一电极组件30的第一极耳32与另一电极组件30的第二极耳33均连接于电路板20的导电端子21，使得两个电极组件30之间也相互串联，从而实现不同排电极组件30之间串联连接。此外，如图8所示，第一排中临近末端B的电极组件30的第一极耳32连接第一导电接片60后作为总负输出极N，而第二排中临近末端B的电极组件30的第二极耳33作为总正输出极P，使得所有电极组件30的电性汇总后通过总正输出极P和总负输出极N引出。
如图7所示，在一些实施例中，第一导电接片60还可作为每个电极组件30的串联端口与电路板20电连接，使得电路板20可用于采集每一电极组件30的电信号(如电压、电流等)。第一导电接片60包括相连接的第一导电部61和第二导电部62，第一导电部61和第二导电部62可相互垂直。第一导电部61连接于相互电连接的第一极耳32和/或第二极耳33，第二导电部62电连接于电路板20上设有的导电端子21。其中，第一导电部61可与相互连接的第一极耳32和/或第二极耳33焊接固定，第二导电部62可与电路板20上的导电端子21焊接固定。第一导电接片60可以包括铜片。另外，第一极耳32和/或第二极耳33和/或第一导电接片60中的部分区域可位于第一盖体40表面，即第一盖体40能够对第一极耳32、第二极耳33以及第一导电接片60起到支撑作用，抑制连接部位在制造和使用过程中的晃动，降低连接失效的风险。
请一并参照图10至图12，在另一些实施例中，不同电极组件30之间的具体连接方式也可以作变更。
其中，第一极耳32伸出容置空间111的长度大于第二极耳33伸出容置空间111的长度。由于第一极耳32相对较长，可设置第一极耳32直接电连接于电路板20，同时，也便于相邻电极组件30之间的第一极耳32直接与第二极耳33连接，从而减少金属连接件的使用，简化制造工艺、降低制造成本。具体地，如图11所示，第一排临近起始端A的电极组件30的第一极耳32与电路板20上的导电端子21电性连接，第二排临近起始端A的电极组件30的第二极耳33通过焊接第二导电接片63(如铜片)后也与电路板20上的导电端子21电性连接，从而实现不同排电极组件30之间串联连接。此外，如图12所示，第一排临近末端B的电极组件30的第一极耳32作为总负输出极N，第二排临近末端B的电极组件30的第二极耳33焊接第二导电接片63作为总正输出极P，且所有的第二导电接片63均可作为每个电极组件30的串联端口与电路板20电连接。
在其它实施例中，多个电极组件30之间也可以相互并联，并不作限制。即，一电极组件30的第一极耳32电连接于另一电极组件30的第一极耳32、一电极组件30的第二极耳33电连接于另一电极组件30的第二极耳33以形成并联电极组件组。
本申请的电极组件30可以是锂二次电池，包括锂金属二次电池、锂离子二次电池、锂聚合物二次电池和锂离子聚合物二次电池。在其它实施方式中，电极组件30也可以是所有种类的一次电池、二次电池。
请参阅图13，本申请还提供一种用电装置1，用电装置1包括如上电池包100。在一实施方式中，本申请的用电装置1可以是，但不限于，汽车、摩托车、助力自行车、自行车等。
以上仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种电池包，包括壳体、电路板和多个电极组件，其特征在于，
    所述壳体包括相对的第一表面和第二表面，所述第一表面设有多个第一开槽；
    所述电池包还包括多个第一盖体，多个所述第一盖体分别盖于多个所述第一开槽以形成多个相互隔开的容置空间；
    所述电极组件包括极片组件、第一极耳和第二极耳，所述极片组件收容于所述容置空间，所述第一极耳和所述第二极耳伸出所述容置空间，多个所述电极组件中的至少一个所述第一极耳和至少一个所述第二极耳电连接于所述电路板。
  2. 如权利要求1所述的电池包，其特征在于，所述第一开槽包括主体部和两个连接部，所述极片组件容置于所述主体部，所述第一极耳和所述第二极耳分别容置于两个所述连接部，并自所述连接部伸出所述容置空间。
  3. 如权利要求1所述的电池包，其特征在于，所述第一开槽在所述第一表面形成开口，所述第一盖体盖于所述开口，所述第一盖体和所述开口之间设有密封件。
  4. 如权利要求1所述的电池包，其特征在于，所述第二表面设有第二开槽，所述第二开槽与所述第一开槽不连通，所述第二开槽内设有冷却介质。
  5. 如权利要求1所述的电池包，其特征在于，所述电池包还包括第二盖体，所述第二盖体盖于所述壳体，所述电路板位于所述第二盖体和所述壳体之间。
  6. 如权利要求1所述的电池包，其特征在于，具有以下特征的至少一者：
    a)一所述电极组件的所述第一极耳电连接于另一所述电极组件的所述第二极耳以形成串联电极组件组；
    b)一所述电极组件的所述第一极耳电连接于另一所述电极组件的所述第一极耳、一所述电极组件的所述第二极耳电连接于另一所述电极组件的所述第二极耳以形成并联电极组件组。
  7. 如权利要求6所述的电池包，其特征在于，所述电池包还包括导电接片，所述导电接片包括相连接的第一导电部和第二导电部，所述第一导电部连接于所述第一极耳和/或所述第二极耳，所述第二导电部电连接于所述电路板。
  8. 如权利要求6所述的电池包，其特征在于，所述第一极耳伸出所述容置空间的长度大于所述第二极耳伸出所述容置空间的长度，至少一个所述第一极耳焊接连接于所述电路板。
  9. 如权利要求1所述的电池包，其特征在于，所述电路板固定于所述第一表面。
  10. 一种用电装置，其特征在于，包括如权利要求1至9中任一项所述的电池包。
PCT/CN2021/082196 2021-03-22 2021-03-22 电池包和具有所述电池包的用电装置 WO2022198416A1 (zh)

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CN1561557A (zh) * 2001-10-01 2005-01-05 松下电器产业株式会社 密闭型碱性蓄电池
CN109075269A (zh) * 2016-04-22 2018-12-21 罗伯特·博世有限公司 多腔室蓄电池模块
CN111063836A (zh) * 2018-10-17 2020-04-24 三星Sdi株式会社 电池组

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CN1289153A (zh) * 1999-09-21 2001-03-28 松下电器产业株式会社 二次电池
CN1561557A (zh) * 2001-10-01 2005-01-05 松下电器产业株式会社 密闭型碱性蓄电池
CN109075269A (zh) * 2016-04-22 2018-12-21 罗伯特·博世有限公司 多腔室蓄电池模块
CN111063836A (zh) * 2018-10-17 2020-04-24 三星Sdi株式会社 电池组

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